Attachment 346836 Details for Bug 188439 – Patch

[patch] Patch

bug-188439-20180809081711.patch (text/plain), 290.83 KB, created by Wenson Hsieh on 2018-08-09 08:17:12 PDT

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Creator: Wenson Hsieh

Created: 2018-08-09 08:17:12 PDT

Size: 290.83 KB

patch

obsolete

>Subversion Revision: 234691
>diff --git a/Tools/ChangeLog b/Tools/ChangeLog
>index 5beae2a31bd37f2cfddf518eb8684bae1b306128..7f2a86efc408813b238abb2a386506a39c431060 100644
>--- a/Tools/ChangeLog
>+++ b/Tools/ChangeLog
>@@ -1,3 +1,116 @@
>+2018-08-09  Wenson Hsieh  <wenson_hsieh@apple.com>
>+
>+        [iOS WK2] Rename DataInteractionSimulator to DraggingSimulator
>+        https://bugs.webkit.org/show_bug.cgi?id=188439
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Refactor DataInteractionSimulator (currently used for drag and drop testing on iOS) so that it exists across
>+        macOS and iOS, and rename it to DraggingSimulator. Additionally, rename DataInteractionTests to
>+        DragAndDropTests.
>+
>+        * TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj:
>+        * TestWebKitAPI/Tests/WebKitCocoa/WKAttachmentTests.mm:
>+        (TestWebKitAPI::TEST):
>+        * TestWebKitAPI/Tests/ios/DragAndDropTestsIOS.mm: Renamed from Tools/TestWebKitAPI/Tests/ios/DataInteractionTests.mm.
>+        (testIconImage):
>+        (testZIPArchive):
>+        (-[UIItemProvider registerDataRepresentationForTypeIdentifier:withData:]):
>+        (-[TestWKWebView editorContainsImageElement]):
>+        (-[TestWKWebView editorValue]):
>+        (makeCGRectValue):
>+        (checkCGRectIsEqualToCGRectWithLogging):
>+        (checkSelectionRectsWithLogging):
>+        (checkRichTextTypePrecedesPlainTextType):
>+        (checkFirstTypeIsPresentAndSecondTypeIsMissing):
>+        (checkTypeIdentifierIsRegisteredAtIndex):
>+        (checkEstimatedSize):
>+        (checkSuggestedNameAndEstimatedSize):
>+        (checkStringArraysAreEqual):
>+        (checkDragCaretRectIsContainedInRect):
>+        (checkJSONWithLogging):
>+        (testIconImageData):
>+        (runTestWithTemporaryTextFile):
>+        (runTestWithTemporaryFolder):
>+        (TestWebKitAPI::TEST):
>+        (TestWebKitAPI::setUpTestWebViewForDataTransferItems):
>+        (TestWebKitAPI::testDragAndDropOntoTargetElements):
>+        (TestWebKitAPI::testIconImageData):
>+        * TestWebKitAPI/cocoa/DraggingSimulator.h: Renamed from Tools/TestWebKitAPI/ios/DataInteractionSimulator.h.
>+        * TestWebKitAPI/ios/DraggingSimulatorIOS.mm: Renamed from Tools/TestWebKitAPI/ios/DataInteractionSimulator.mm.
>+        (-[WKWebView dropInteractionDelegate]):
>+        (-[WKWebView dragInteractionDelegate]):
>+        (-[WKWebView dropInteraction]):
>+        (-[WKWebView dragInteraction]):
>+        (-[MockDragDropSession initWithItems:location:window:allowMove:]):
>+        (-[MockDragDropSession allowsMoveOperation]):
>+        (-[MockDragDropSession isRestrictedToDraggingApplication]):
>+        (-[MockDragDropSession hasItemsConformingToTypeIdentifiers:]):
>+        (-[MockDragDropSession canLoadObjectsOfClass:]):
>+        (-[MockDragDropSession canLoadObjectsOfClasses:]):
>+        (-[MockDragDropSession items]):
>+        (-[MockDragDropSession setItems:]):
>+        (-[MockDragDropSession addItems:]):
>+        (-[MockDragDropSession locationInView:]):
>+        (-[MockDropSession initWithProviders:location:window:allowMove:]):
>+        (-[MockDropSession isLocal]):
>+        (-[MockDropSession progress]):
>+        (-[MockDropSession setProgressIndicatorStyle:]):
>+        (-[MockDropSession progressIndicatorStyle]):
>+        (-[MockDropSession operationMask]):
>+        (-[MockDropSession localDragSession]):
>+        (-[MockDropSession hasItemsConformingToTypeIdentifier:]):
>+        (-[MockDropSession canCreateItemsOfClass:]):
>+        (-[MockDropSession loadObjectsOfClass:completion:]):
>+        (-[MockDragSession initWithWindow:allowMove:]):
>+        (-[MockDragSession localOperationMask]):
>+        (-[MockDragSession externalOperationMask]):
>+        (-[MockDragSession session]):
>+        (-[MockDragSession localContext]):
>+        (-[MockDragSession setLocalContext:]):
>+        (dragAndDropEventNames):
>+        (-[DraggingSimulatorApplication _cancelAllTouches]):
>+        (-[DraggingSimulator initWithWebView:]):
>+        (-[DraggingSimulator dealloc]):
>+        (-[DraggingSimulator _resetSimulatedState]):
>+        (-[DraggingSimulator observedEventNames]):
>+        (-[DraggingSimulator simulateAllTouchesCanceled:]):
>+        (-[DraggingSimulator runFrom:to:]):
>+        (-[DraggingSimulator runFrom:to:additionalItemRequestLocations:]):
>+        (-[DraggingSimulator finalSelectionRects]):
>+        (-[DraggingSimulator _concludeDropAndPerformOperationIfNecessary]):
>+        (-[DraggingSimulator _enqueuePendingAdditionalItemRequestLocations]):
>+        (-[DraggingSimulator _sendQueuedAdditionalItemRequest]):
>+        (-[DraggingSimulator _advanceProgress]):
>+        (-[DraggingSimulator _currentLocation]):
>+        (-[DraggingSimulator _scheduleAdvanceProgress]):
>+        (-[DraggingSimulator sourceItemProviders]):
>+        (-[DraggingSimulator externalItemProviders]):
>+        (-[DraggingSimulator setExternalItemProviders:]):
>+        (-[DraggingSimulator phase]):
>+        (-[DraggingSimulator liftPreviews]):
>+        (-[DraggingSimulator lastKnownDragCaretRect]):
>+        (-[DraggingSimulator waitForInputSession]):
>+        (-[DraggingSimulator insertedAttachments]):
>+        (-[DraggingSimulator removedAttachments]):
>+        (-[DraggingSimulator endDataTransfer]):
>+        (-[DraggingSimulator _webView:dataInteractionOperationWasHandled:forSession:itemProviders:]):
>+        (-[DraggingSimulator _webView:willUpdateDataInteractionOperationToOperation:forSession:]):
>+        (-[DraggingSimulator _webView:adjustedDataInteractionItemProvidersForItemProvider:representingObjects:additionalData:]):
>+        (-[DraggingSimulator _webView:showCustomSheetForElement:]):
>+        (-[DraggingSimulator _webView:willPerformDropWithSession:]):
>+        (-[DraggingSimulator _webView:didInsertAttachment:]):
>+        (-[DraggingSimulator _webView:didRemoveAttachment:]):
>+        (-[DraggingSimulator _webView:focusShouldStartInputSession:]):
>+        (-[DraggingSimulator _webView:didStartInputSession:]):
>+        * TestWebKitAPI/ios/UIKitSPI.h:
>+        * TestWebKitAPI/mac/DraggingSimulatorMac.mm: Added.
>+        (-[DraggingSimulator initWithWebView:]):
>+        (-[DraggingSimulator dealloc]):
>+        (-[DraggingSimulator runFrom:to:]):
>+        (-[DraggingSimulator insertedAttachments]):
>+        (-[DraggingSimulator removedAttachments]):
>+
> 2018-08-08  Wenson Hsieh  <wenson_hsieh@apple.com>
> 
>         [iOS] fast/events/ios/contenteditable-autocapitalize.html is a flaky failure
>diff --git a/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj b/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj
>index 3e036c33fd46179f40039012bd08d45fcf609b13..f2eafd5a6bf6986d9c20b7c9827c9aa86854aa58 100644
>--- a/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj
>+++ b/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj
>@@ -808,6 +808,7 @@
> 		F45B63FE1F19D410009D38B9 /* ActionSheetTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = F45B63FC1F19D410009D38B9 /* ActionSheetTests.mm */; };
> 		F45E15732112CE2900307E82 /* KeyboardInputTestsIOS.mm in Sources */ = {isa = PBXBuildFile; fileRef = F45E15722112CE2900307E82 /* KeyboardInputTestsIOS.mm */; };
> 		F45E15762112CE6200307E82 /* TestInputDelegate.mm in Sources */ = {isa = PBXBuildFile; fileRef = F45E15752112CE6200307E82 /* TestInputDelegate.mm */; };
>+		F46128B7211C8ED500D9FADB /* DraggingSimulatorMac.mm in Sources */ = {isa = PBXBuildFile; fileRef = F46128B6211C8ED500D9FADB /* DraggingSimulatorMac.mm */; };
> 		F464AF9220BB66EA007F9B18 /* RenderingProgressTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = F464AF9120BB66EA007F9B18 /* RenderingProgressTests.mm */; };
> 		F46849BE1EEF58E400B937FE /* UIPasteboardTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = F46849BD1EEF58E400B937FE /* UIPasteboardTests.mm */; };
> 		F46849C01EEF5EF300B937FE /* rich-and-plain-text.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = F46849BF1EEF5EDC00B937FE /* rich-and-plain-text.html */; };
>@@ -829,8 +830,8 @@
> 		F4CD74C620FDACFA00DE3794 /* text-with-async-script.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = F4CD74C520FDACF500DE3794 /* text-with-async-script.html */; };
> 		F4CD74C920FDB49600DE3794 /* TestURLSchemeHandler.mm in Sources */ = {isa = PBXBuildFile; fileRef = F4CD74C820FDB49600DE3794 /* TestURLSchemeHandler.mm */; };
> 		F4D2986E20FEE7370092D636 /* RunScriptAfterDocumentLoad.mm in Sources */ = {isa = PBXBuildFile; fileRef = F4D2986D20FEE7370092D636 /* RunScriptAfterDocumentLoad.mm */; };
>-		F4D4F3B61E4E2BCB00BB2767 /* DataInteractionSimulator.mm in Sources */ = {isa = PBXBuildFile; fileRef = F4D4F3B41E4E2BCB00BB2767 /* DataInteractionSimulator.mm */; };
>-		F4D4F3B91E4E36E400BB2767 /* DataInteractionTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = F4D4F3B71E4E36E400BB2767 /* DataInteractionTests.mm */; };
>+		F4D4F3B61E4E2BCB00BB2767 /* DraggingSimulatorIOS.mm in Sources */ = {isa = PBXBuildFile; fileRef = F4D4F3B41E4E2BCB00BB2767 /* DraggingSimulatorIOS.mm */; };
>+		F4D4F3B91E4E36E400BB2767 /* DragAndDropTestsIOS.mm in Sources */ = {isa = PBXBuildFile; fileRef = F4D4F3B71E4E36E400BB2767 /* DragAndDropTestsIOS.mm */; };
> 		F4D5E4E81F0C5D38008C1A49 /* dragstart-clear-selection.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = F4D5E4E71F0C5D27008C1A49 /* dragstart-clear-selection.html */; };
> 		F4D65DA81F5E4704009D8C27 /* selected-text-image-link-and-editable.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = F4D65DA71F5E46C0009D8C27 /* selected-text-image-link-and-editable.html */; };
> 		F4DEF6ED1E9B4DB60048EF61 /* image-in-link-and-input.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = F4DEF6EC1E9B4D950048EF61 /* image-in-link-and-input.html */; };
>@@ -2032,6 +2033,8 @@
> 		F45E15722112CE2900307E82 /* KeyboardInputTestsIOS.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = KeyboardInputTestsIOS.mm; sourceTree = "<group>"; };
> 		F45E15742112CE6200307E82 /* TestInputDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = TestInputDelegate.h; sourceTree = "<group>"; };
> 		F45E15752112CE6200307E82 /* TestInputDelegate.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = TestInputDelegate.mm; sourceTree = "<group>"; };
>+		F46128B4211C861A00D9FADB /* DraggingSimulator.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = DraggingSimulator.h; path = cocoa/DraggingSimulator.h; sourceTree = "<group>"; };
>+		F46128B6211C8ED500D9FADB /* DraggingSimulatorMac.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = DraggingSimulatorMac.mm; sourceTree = "<group>"; };
> 		F464AF9120BB66EA007F9B18 /* RenderingProgressTests.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = RenderingProgressTests.mm; sourceTree = "<group>"; };
> 		F46849BD1EEF58E400B937FE /* UIPasteboardTests.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = UIPasteboardTests.mm; sourceTree = "<group>"; };
> 		F46849BF1EEF5EDC00B937FE /* rich-and-plain-text.html */ = {isa = PBXFileReference; lastKnownFileType = text.html; path = "rich-and-plain-text.html"; sourceTree = "<group>"; };
>@@ -2055,9 +2058,8 @@
> 		F4CD74C720FDB49600DE3794 /* TestURLSchemeHandler.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = TestURLSchemeHandler.h; sourceTree = "<group>"; };
> 		F4CD74C820FDB49600DE3794 /* TestURLSchemeHandler.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = TestURLSchemeHandler.mm; sourceTree = "<group>"; };
> 		F4D2986D20FEE7370092D636 /* RunScriptAfterDocumentLoad.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = RunScriptAfterDocumentLoad.mm; sourceTree = "<group>"; };
>-		F4D4F3B41E4E2BCB00BB2767 /* DataInteractionSimulator.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = DataInteractionSimulator.mm; sourceTree = "<group>"; };
>-		F4D4F3B51E4E2BCB00BB2767 /* DataInteractionSimulator.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DataInteractionSimulator.h; sourceTree = "<group>"; };
>-		F4D4F3B71E4E36E400BB2767 /* DataInteractionTests.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = DataInteractionTests.mm; sourceTree = "<group>"; };
>+		F4D4F3B41E4E2BCB00BB2767 /* DraggingSimulatorIOS.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = DraggingSimulatorIOS.mm; sourceTree = "<group>"; };
>+		F4D4F3B71E4E36E400BB2767 /* DragAndDropTestsIOS.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = DragAndDropTestsIOS.mm; sourceTree = "<group>"; };
> 		F4D5E4E71F0C5D27008C1A49 /* dragstart-clear-selection.html */ = {isa = PBXFileReference; lastKnownFileType = text.html; path = "dragstart-clear-selection.html"; sourceTree = "<group>"; };
> 		F4D65DA71F5E46C0009D8C27 /* selected-text-image-link-and-editable.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; path = "selected-text-image-link-and-editable.html"; sourceTree = "<group>"; };
> 		F4DEF6EC1E9B4D950048EF61 /* image-in-link-and-input.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; path = "image-in-link-and-input.html"; sourceTree = "<group>"; };
>@@ -2195,6 +2197,7 @@
> 				A13EBB441B87332B00097110 /* WebProcessPlugIn */,
> 				F4517B682054E0AC00C26721 /* ClassMethodSwizzler.h */,
> 				F4517B692054E0AC00C26721 /* ClassMethodSwizzler.mm */,
>+				F46128B4211C861A00D9FADB /* DraggingSimulator.h */,
> 				F44D06481F3962E3001A0E29 /* EditingTestHarness.h */,
> 				F44D06491F3962E3001A0E29 /* EditingTestHarness.mm */,
> 				5C726D6D1D3EE06800C5E1A1 /* InstanceMethodSwizzler.h */,
>@@ -2410,8 +2413,7 @@
> 		2E9660DC16C07D7B00371B42 /* ios */ = {
> 			isa = PBXGroup;
> 			children = (
>-				F4D4F3B51E4E2BCB00BB2767 /* DataInteractionSimulator.h */,
>-				F4D4F3B41E4E2BCB00BB2767 /* DataInteractionSimulator.mm */,
>+				F4D4F3B41E4E2BCB00BB2767 /* DraggingSimulatorIOS.mm */,
> 				2E7765CC16C4D80A00BA2BB1 /* mainIOS.mm */,
> 				F4517B652054C49500C26721 /* TestWKWebViewController.h */,
> 				F4517B662054C49500C26721 /* TestWKWebViewController.mm */,
>@@ -2496,7 +2498,7 @@
> 				A1C4FB6F1BACCEFA003742D0 /* Resources */,
> 				2E205BA31F527746005952DD /* AccessibilityTestsIOS.mm */,
> 				F45B63FC1F19D410009D38B9 /* ActionSheetTests.mm */,
>-				F4D4F3B71E4E36E400BB2767 /* DataInteractionTests.mm */,
>+				F4D4F3B71E4E36E400BB2767 /* DragAndDropTestsIOS.mm */,
> 				F45E15722112CE2900307E82 /* KeyboardInputTestsIOS.mm */,
> 				574F55CE204D3763002948C6 /* LocalAuthenticator.mm */,
> 				7560917719259C59009EF06E /* MemoryCacheAddImageToCacheIOS.mm */,
>@@ -3096,6 +3098,7 @@
> 		BCA61C3A11700B9400460D1E /* mac */ = {
> 			isa = PBXGroup;
> 			children = (
>+				F46128B6211C8ED500D9FADB /* DraggingSimulatorMac.mm */,
> 				1AEDE22413E5E7A000E62FE8 /* InjectedBundleControllerMac.mm */,
> 				C081224013FC172400DC39AE /* JavaScriptTestMac.mm */,
> 				2E7765CE16C4D81100BA2BB1 /* mainMac.mm */,
>@@ -3670,8 +3673,6 @@
> 				46A911592108E6780078D40D /* CustomUserAgent.mm in Sources */,
> 				751B05D61F8EAC410028A09E /* DatabaseTrackerTest.mm in Sources */,
> 				2DC4CF771D2D9DD800ECCC94 /* DataDetection.mm in Sources */,
>-				F4D4F3B61E4E2BCB00BB2767 /* DataInteractionSimulator.mm in Sources */,
>-				F4D4F3B91E4E36E400BB2767 /* DataInteractionTests.mm in Sources */,
> 				518EE51D20A78D3600E024F3 /* DecidePolicyForNavigationAction.mm in Sources */,
> 				2D1646E21D1862CD00015A1A /* DeferredViewInWindowStateChange.mm in Sources */,
> 				7CCE7EB91A411A7E00447C4C /* DeviceScaleFactorInDashboardRegions.mm in Sources */,
>@@ -3694,6 +3695,9 @@
> 				7CCE7F231A411AF600447C4C /* Download.mm in Sources */,
> 				7CCE7EEE1A411AE600447C4C /* DownloadDecideDestinationCrash.cpp in Sources */,
> 				F4BFA68E1E4AD08000154298 /* DragAndDropPasteboardTests.mm in Sources */,
>+				F4D4F3B91E4E36E400BB2767 /* DragAndDropTestsIOS.mm in Sources */,
>+				F4D4F3B61E4E2BCB00BB2767 /* DraggingSimulatorIOS.mm in Sources */,
>+				F46128B7211C8ED500D9FADB /* DraggingSimulatorMac.mm in Sources */,
> 				A155022A1E05020B00A24C57 /* DuplicateCompletionHandlerCalls.mm in Sources */,
> 				7CCE7EBE1A411A7E00447C4C /* DynamicDeviceScaleFactor.mm in Sources */,
> 				5C0BF8921DD599B600B00328 /* EarlyKVOCrash.mm in Sources */,
>diff --git a/Tools/TestWebKitAPI/Tests/WebKitCocoa/WKAttachmentTests.mm b/Tools/TestWebKitAPI/Tests/WebKitCocoa/WKAttachmentTests.mm
>index 4689da43b3b7b191ab081df1ecbab4281dc038bf..aefa75a9d615e979a5bb8018055c2f34278c3940 100644
>--- a/Tools/TestWebKitAPI/Tests/WebKitCocoa/WKAttachmentTests.mm
>+++ b/Tools/TestWebKitAPI/Tests/WebKitCocoa/WKAttachmentTests.mm
>@@ -25,7 +25,7 @@
> 
> #import "config.h"
> 
>-#import "DataInteractionSimulator.h"
>+#import "DraggingSimulator.h"
> #import "PlatformUtilities.h"
> #import "TestWKWebView.h"
> #import "WKWebViewConfigurationExtras.h"
>@@ -1194,7 +1194,7 @@ TEST(WKAttachmentTestsMac, InsertPastedFileURLsAsAttachments)
> TEST(WKAttachmentTestsIOS, InsertDroppedImageAsAttachment)
> {
>     auto webView = webViewForTestingAttachments();
>-    auto draggingSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>+    auto draggingSimulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>     auto item = adoptNS([[NSItemProvider alloc] init]);
>     [item registerData:testImageData() type:(NSString *)kUTTypePNG];
>     [draggingSimulator setExternalItemProviders:@[ item.get() ]];
>@@ -1217,7 +1217,7 @@ TEST(WKAttachmentTestsIOS, InsertDroppedImageAsAttachment)
> TEST(WKAttachmentTestsIOS, InsertDroppedAttributedStringContainingAttachment)
> {
>     auto webView = webViewForTestingAttachments();
>-    auto draggingSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>+    auto draggingSimulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>     auto image = adoptNS([[NSTextAttachment alloc] initWithData:testImageData() ofType:(NSString *)kUTTypePNG]);
>     auto item = adoptNS([[NSItemProvider alloc] init]);
>     [item registerObject:[NSAttributedString attributedStringWithAttachment:image.get()] visibility:NSItemProviderRepresentationVisibilityAll];
>@@ -1260,7 +1260,7 @@ TEST(WKAttachmentTestsIOS, InsertDroppedRichAndPlainTextFilesAsAttachments)
>     [plainTextItem setSuggestedName:@"world.txt"];
> 
>     auto webView = webViewForTestingAttachments();
>-    auto draggingSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>+    auto draggingSimulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>     [draggingSimulator setExternalItemProviders:@[ richTextItem.get(), plainTextItem.get() ]];
>     [draggingSimulator runFrom:CGPointZero to:CGPointMake(50, 50)];
> 
>@@ -1293,7 +1293,7 @@ TEST(WKAttachmentTestsIOS, InsertDroppedZipArchiveAsAttachment)
>     [item setSuggestedName:@"archive.zip"];
> 
>     auto webView = webViewForTestingAttachments();
>-    auto draggingSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>+    auto draggingSimulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>     [draggingSimulator setExternalItemProviders:@[ item.get() ]];
>     [draggingSimulator runFrom:CGPointZero to:CGPointMake(50, 50)];
> 
>@@ -1323,7 +1323,7 @@ TEST(WKAttachmentTestsIOS, InsertDroppedItemProvidersInOrder)
>     [secondAttachmentItem setSuggestedName:@"second.pdf"];
> 
>     auto webView = webViewForTestingAttachments();
>-    auto draggingSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>+    auto draggingSimulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>     [draggingSimulator setExternalItemProviders:@[ firstAttachmentItem.get(), inlineTextItem.get(), secondAttachmentItem.get() ]];
>     [draggingSimulator runFrom:CGPointZero to:CGPointMake(50, 50)];
> 
>@@ -1355,7 +1355,7 @@ TEST(WKAttachmentTestsIOS, DragAttachmentInsertedAsFile)
>     [item setSuggestedName:@"document.pdf"];
> 
>     auto webView = webViewForTestingAttachments();
>-    auto draggingSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>+    auto draggingSimulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>     [draggingSimulator setExternalItemProviders:@[ item.get() ]];
>     [draggingSimulator runFrom:CGPointZero to:CGPointMake(50, 50)];
> 
>@@ -1396,7 +1396,7 @@ TEST(WKAttachmentTestsIOS, DragAttachmentInsertedAsData)
>     EXPECT_WK_STREQ("application/pdf", [webView valueOfAttribute:@"type" forQuerySelector:@"attachment"]);
> 
>     [webView evaluateJavaScript:@"getSelection().removeAllRanges()" completionHandler:nil];
>-    auto draggingSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>+    auto draggingSimulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>     [draggingSimulator runFrom:CGPointMake(25, 25) to:CGPointMake(-100, -100)];
> 
>     // Next, verify that dragging the attachment produces an item provider with a PDF attachment.
>@@ -1425,7 +1425,7 @@ TEST(WKAttachmentTestsIOS, DragInPlaceVideoAttachmentElement)
>     EXPECT_WK_STREQ("video/mp4", [webView valueOfAttribute:@"type" forQuerySelector:@"attachment"]);
> 
>     [webView evaluateJavaScript:@"getSelection().removeAllRanges()" completionHandler:nil];
>-    auto draggingSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>+    auto draggingSimulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>     [draggingSimulator runFrom:CGPointMake(25, 25) to:CGPointMake(-100, -100)];
> 
>     EXPECT_EQ(1U, [draggingSimulator sourceItemProviders].count);
>@@ -1452,7 +1452,7 @@ TEST(WKAttachmentTestsIOS, MoveAttachmentElementAsIconByDragging)
>     [webView _synchronouslyExecuteEditCommand:@"InsertParagraph" argument:nil];
>     [webView expectElementTag:@"ATTACHMENT" toComeBefore:@"STRONG"];
> 
>-    auto draggingSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>+    auto draggingSimulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>     [draggingSimulator runFrom:CGPointMake(25, 25) to:CGPointMake(25, 425)];
> 
>     attachment = [[draggingSimulator insertedAttachments] firstObject];
>@@ -1481,7 +1481,7 @@ TEST(WKAttachmentTestsIOS, MoveInPlaceAttachmentElementByDragging)
>     [webView _synchronouslyExecuteEditCommand:@"InsertParagraph" argument:nil];
>     [webView expectElementTag:@"ATTACHMENT" toComeBefore:@"STRONG"];
> 
>-    auto draggingSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>+    auto draggingSimulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>     [draggingSimulator runFrom:CGPointMake(25, 25) to:CGPointMake(25, 425)];
> 
>     attachment = [[draggingSimulator insertedAttachments] firstObject];
>diff --git a/Tools/TestWebKitAPI/Tests/ios/DataInteractionTests.mm b/Tools/TestWebKitAPI/Tests/ios/DataInteractionTests.mm
>deleted file mode 100644
>index e5ba87bbb41daf9737431d08a86dac02d1a5a9a5..0000000000000000000000000000000000000000
>--- a/Tools/TestWebKitAPI/Tests/ios/DataInteractionTests.mm
>+++ /dev/null
>@@ -1,1911 +0,0 @@
>-/*
>- * Copyright (C) 2017 Apple Inc. All rights reserved.
>- *
>- * Redistribution and use in source and binary forms, with or without
>- * modification, are permitted provided that the following conditions
>- * are met:
>- * 1. Redistributions of source code must retain the above copyright
>- *    notice, this list of conditions and the following disclaimer.
>- * 2. Redistributions in binary form must reproduce the above copyright
>- *    notice, this list of conditions and the following disclaimer in the
>- *    documentation and/or other materials provided with the distribution.
>- *
>- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>- * THE POSSIBILITY OF SUCH DAMAGE.
>- */
>-
>-#include "config.h"
>-
>-#if ENABLE(DATA_INTERACTION)
>-
>-#import "DataInteractionSimulator.h"
>-#import "PlatformUtilities.h"
>-#import "TestWKWebView.h"
>-#import "UIKitSPI.h"
>-#import "WKWebViewConfigurationExtras.h"
>-#import <MobileCoreServices/MobileCoreServices.h>
>-#import <UIKit/NSItemProvider+UIKitAdditions.h>
>-#import <WebKit/WKPreferencesPrivate.h>
>-#import <WebKit/WKPreferencesRefPrivate.h>
>-#import <WebKit/WKProcessPoolPrivate.h>
>-#import <WebKit/WKWebViewConfigurationPrivate.h>
>-#import <WebKit/WebItemProviderPasteboard.h>
>-#import <WebKit/_WKProcessPoolConfiguration.h>
>-#import <wtf/Seconds.h>
>-
>-typedef void (^FileLoadCompletionBlock)(NSURL *, BOOL, NSError *);
>-typedef void (^DataLoadCompletionBlock)(NSData *, NSError *);
>-typedef void (^UIItemProviderDataLoadCompletionBlock)(NSData *, NSError *);
>-
>-#if !USE(APPLE_INTERNAL_SDK)
>-
>-@interface UIItemProviderRepresentationOptions : NSObject
>-@end
>-
>-#endif
>-
>-@interface UIItemProvider()
>-+ (UIItemProvider *)itemProviderWithURL:(NSURL *)url title:(NSString *)title;
>-- (void) registerDataRepresentationForTypeIdentifier:(NSString *)typeIdentifier options:(UIItemProviderRepresentationOptions*)options loadHandler:(NSProgress * (^)(void (^UIItemProviderDataLoadCompletionBlock)(NSData *item, NSError *error))) loadHandler;
>-@end
>-
>-static NSString *InjectedBundlePasteboardDataType = @"org.webkit.data";
>-
>-static UIImage *testIconImage()
>-{
>-    return [UIImage imageNamed:@"TestWebKitAPI.resources/icon.png"];
>-}
>-
>-static NSData *testZIPArchive()
>-{
>-    NSURL *zipFileURL = [[NSBundle mainBundle] URLForResource:@"compressed-files" withExtension:@"zip" subdirectory:@"TestWebKitAPI.resources"];
>-    return [NSData dataWithContentsOfURL:zipFileURL];
>-}
>-
>-@implementation UIItemProvider (DataInteractionTests)
>-
>-- (void)registerDataRepresentationForTypeIdentifier:(NSString *)typeIdentifier withData:(NSData *)data
>-{
>-    RetainPtr<NSData> retainedData = data;
>-    [self registerDataRepresentationForTypeIdentifier:typeIdentifier visibility:UIItemProviderRepresentationOptionsVisibilityAll loadHandler: [retainedData] (DataLoadCompletionBlock block) -> NSProgress * {
>-        block(retainedData.get(), nil);
>-        return [NSProgress discreteProgressWithTotalUnitCount:100];
>-    }];
>-}
>-
>-@end
>-
>-@implementation TestWKWebView (DataInteractionTests)
>-
>-- (BOOL)editorContainsImageElement
>-{
>-    return [self stringByEvaluatingJavaScript:@"!!editor.querySelector('img')"].boolValue;
>-}
>-
>-- (NSString *)editorValue
>-{
>-    return [self stringByEvaluatingJavaScript:@"editor.value"];
>-}
>-
>-@end
>-
>-static NSValue *makeCGRectValue(CGFloat x, CGFloat y, CGFloat width, CGFloat height)
>-{
>-    return [NSValue valueWithCGRect:CGRectMake(x, y, width, height)];
>-}
>-
>-static void checkCGRectIsEqualToCGRectWithLogging(CGRect expected, CGRect observed)
>-{
>-    BOOL isEqual = CGRectEqualToRect(expected, observed);
>-    EXPECT_TRUE(isEqual);
>-    if (!isEqual)
>-        NSLog(@"Expected: %@ but observed: %@", NSStringFromCGRect(expected), NSStringFromCGRect(observed));
>-}
>-
>-static void checkSelectionRectsWithLogging(NSArray *expected, NSArray *observed)
>-{
>-    if (![expected isEqualToArray:observed])
>-        NSLog(@"Expected selection rects: %@ but observed: %@", expected, observed);
>-    EXPECT_TRUE([expected isEqualToArray:observed]);
>-}
>-
>-static void checkRichTextTypePrecedesPlainTextType(DataInteractionSimulator *simulator)
>-{
>-    // At least one of "com.apple.flat-rtfd" or "public.rtf" is expected to have higher precedence than "public.utf8-plain-text".
>-    NSArray *registeredTypes = [simulator.sourceItemProviders.firstObject registeredTypeIdentifiers];
>-    auto indexOfRTFType = [registeredTypes indexOfObject:(NSString *)kUTTypeRTF];
>-    auto indexOfFlatRTFDType = [registeredTypes indexOfObject:(NSString *)kUTTypeFlatRTFD];
>-    auto indexOfPlainTextType = [registeredTypes indexOfObject:(NSString *)kUTTypeUTF8PlainText];
>-    EXPECT_NE((NSInteger)indexOfPlainTextType, NSNotFound);
>-    EXPECT_TRUE((indexOfRTFType != NSNotFound && indexOfRTFType < indexOfPlainTextType) || (indexOfFlatRTFDType != NSNotFound && indexOfFlatRTFDType < indexOfPlainTextType));
>-}
>-
>-static void checkFirstTypeIsPresentAndSecondTypeIsMissing(DataInteractionSimulator *simulator, CFStringRef firstType, CFStringRef secondType)
>-{
>-    NSArray *registeredTypes = [simulator.sourceItemProviders.firstObject registeredTypeIdentifiers];
>-    EXPECT_TRUE([registeredTypes containsObject:(NSString *)firstType]);
>-    EXPECT_FALSE([registeredTypes containsObject:(NSString *)secondType]);
>-}
>-
>-static void checkTypeIdentifierIsRegisteredAtIndex(DataInteractionSimulator *simulator, NSString *type, NSUInteger index)
>-{
>-    NSArray *registeredTypes = [simulator.sourceItemProviders.firstObject registeredTypeIdentifiers];
>-    EXPECT_GT(registeredTypes.count, index);
>-    EXPECT_WK_STREQ(type.UTF8String, [registeredTypes[index] UTF8String]);
>-}
>-
>-static void checkEstimatedSize(DataInteractionSimulator *simulator, CGSize estimatedSize)
>-{
>-    UIItemProvider *sourceItemProvider = [simulator sourceItemProviders].firstObject;
>-    EXPECT_EQ(estimatedSize.width, sourceItemProvider.preferredPresentationSize.width);
>-    EXPECT_EQ(estimatedSize.height, sourceItemProvider.preferredPresentationSize.height);
>-}
>-
>-static void checkSuggestedNameAndEstimatedSize(DataInteractionSimulator *simulator, NSString *suggestedName, CGSize estimatedSize)
>-{
>-    UIItemProvider *sourceItemProvider = [simulator sourceItemProviders].firstObject;
>-    EXPECT_WK_STREQ(suggestedName.UTF8String, sourceItemProvider.suggestedName.UTF8String);
>-    EXPECT_EQ(estimatedSize.width, sourceItemProvider.preferredPresentationSize.width);
>-    EXPECT_EQ(estimatedSize.height, sourceItemProvider.preferredPresentationSize.height);
>-}
>-
>-static void checkStringArraysAreEqual(NSArray<NSString *> *expected, NSArray<NSString *> *observed)
>-{
>-    EXPECT_EQ(expected.count, observed.count);
>-    for (NSUInteger index = 0; index < expected.count; ++index) {
>-        NSString *expectedString = [expected objectAtIndex:index];
>-        NSString *observedString = [observed objectAtIndex:index];
>-        EXPECT_WK_STREQ(expectedString, observedString);
>-        if (![expectedString isEqualToString:observedString])
>-            NSLog(@"Expected observed string: %@ to match expected string: %@ at index: %tu", observedString, expectedString, index);
>-    }
>-}
>-
>-static void checkDragCaretRectIsContainedInRect(CGRect caretRect, CGRect containerRect)
>-{
>-    BOOL contained = CGRectContainsRect(containerRect, caretRect);
>-    EXPECT_TRUE(contained);
>-    if (!contained)
>-        NSLog(@"Expected caret rect: %@ to fit within container rect: %@", NSStringFromCGRect(caretRect), NSStringFromCGRect(containerRect));
>-}
>-
>-#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>-
>-static void checkJSONWithLogging(NSString *jsonString, NSDictionary *expected)
>-{
>-    BOOL success = TestWebKitAPI::Util::jsonMatchesExpectedValues(jsonString, expected);
>-    EXPECT_TRUE(success);
>-    if (!success)
>-        NSLog(@"Expected JSON: %@ to match values: %@", jsonString, expected);
>-}
>-
>-static NSData *testIconImageData()
>-{
>-    return [NSData dataWithContentsOfURL:[[NSBundle mainBundle] URLForResource:@"icon" withExtension:@"png" subdirectory:@"TestWebKitAPI.resources"]];
>-}
>-
>-static void runTestWithTemporaryTextFile(void(^runTest)(NSURL *fileURL))
>-{
>-    NSString *fileName = [NSString stringWithFormat:@"drag-drop-text-file-%@.txt", [NSUUID UUID].UUIDString];
>-    RetainPtr<NSURL> temporaryFile = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent:fileName] isDirectory:NO];
>-    [[NSFileManager defaultManager] removeItemAtURL:temporaryFile.get() error:nil];
>-
>-    NSError *error = nil;
>-    [@"This is a tiny blob of text." writeToURL:temporaryFile.get() atomically:YES encoding:NSUTF8StringEncoding error:&error];
>-
>-    if (error)
>-        NSLog(@"Error writing temporary file: %@", error);
>-
>-    @try {
>-        runTest(temporaryFile.get());
>-    } @finally {
>-        [[NSFileManager defaultManager] removeItemAtURL:temporaryFile.get() error:nil];
>-    }
>-}
>-
>-static void runTestWithTemporaryFolder(void(^runTest)(NSURL *folderURL))
>-{
>-    NSString *folderName = [NSString stringWithFormat:@"some.directory-%@", [NSUUID UUID].UUIDString];
>-    RetainPtr<NSURL> temporaryFolder = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent:folderName] isDirectory:YES];
>-    [[NSFileManager defaultManager] removeItemAtURL:temporaryFolder.get() error:nil];
>-
>-    NSError *error = nil;
>-    NSFileManager *defaultManager = [NSFileManager defaultManager];
>-    [defaultManager createDirectoryAtURL:temporaryFolder.get() withIntermediateDirectories:NO attributes:nil error:&error];
>-    [testIconImageData() writeToURL:[temporaryFolder.get() URLByAppendingPathComponent:@"icon.png" isDirectory:NO] atomically:YES];
>-    [testZIPArchive() writeToURL:[temporaryFolder.get() URLByAppendingPathComponent:@"archive.zip" isDirectory:NO] atomically:YES];
>-
>-    NSURL *firstSubdirectory = [temporaryFolder.get() URLByAppendingPathComponent:@"subdirectory1" isDirectory:YES];
>-    [defaultManager createDirectoryAtURL:firstSubdirectory withIntermediateDirectories:NO attributes:nil error:&error];
>-    [@"I am a text file in the first subdirectory." writeToURL:[firstSubdirectory URLByAppendingPathComponent:@"text-file-1.txt" isDirectory:NO] atomically:YES encoding:NSUTF8StringEncoding error:&error];
>-
>-    NSURL *secondSubdirectory = [temporaryFolder.get() URLByAppendingPathComponent:@"subdirectory2" isDirectory:YES];
>-    [defaultManager createDirectoryAtURL:secondSubdirectory withIntermediateDirectories:NO attributes:nil error:&error];
>-    [@"I am a text file in the second subdirectory." writeToURL:[secondSubdirectory URLByAppendingPathComponent:@"text-file-2.txt" isDirectory:NO] atomically:YES encoding:NSUTF8StringEncoding error:&error];
>-
>-    if (error)
>-        NSLog(@"Error writing temporary file: %@", error);
>-
>-    @try {
>-        runTest(temporaryFolder.get());
>-    } @finally {
>-        [[NSFileManager defaultManager] removeItemAtURL:temporaryFolder.get() error:nil];
>-    }
>-}
>-
>-#endif // __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>-
>-namespace TestWebKitAPI {
>-
>-TEST(DataInteractionTests, ImageToContentEditable)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"image-and-contenteditable"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_TRUE([webView editorContainsImageElement]);
>-
>-    NSArray *observedEventNames = [dataInteractionSimulator observedEventNames];
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionEnterEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionOverEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionPerformOperationEventName]);
>-    checkSelectionRectsWithLogging(@[ makeCGRectValue(1, 201, 215, 174) ], [dataInteractionSimulator finalSelectionRects]);
>-    checkFirstTypeIsPresentAndSecondTypeIsMissing(dataInteractionSimulator.get(), kUTTypePNG, kUTTypeFileURL);
>-    checkEstimatedSize(dataInteractionSimulator.get(), { 215, 174 });
>-}
>-
>-TEST(DataInteractionTests, CanStartDragOnEnormousImage)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadHTMLString:@"<img src='enormous.svg'></img>"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 100) to:CGPointMake(100, 100)];
>-
>-    NSArray *registeredTypes = [[dataInteractionSimulator sourceItemProviders].firstObject registeredTypeIdentifiers];
>-    EXPECT_WK_STREQ((NSString *)kUTTypeScalableVectorGraphics, [registeredTypes firstObject]);
>-}
>-
>-TEST(DataInteractionTests, ImageToTextarea)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"image-and-textarea"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("", [webView editorValue]);
>-
>-    NSArray *observedEventNames = [dataInteractionSimulator observedEventNames];
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionEnterEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionOverEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionPerformOperationEventName]);
>-    checkFirstTypeIsPresentAndSecondTypeIsMissing(dataInteractionSimulator.get(), kUTTypePNG, kUTTypeFileURL);
>-    checkEstimatedSize(dataInteractionSimulator.get(), { 215, 174 });
>-}
>-
>-TEST(DataInteractionTests, ImageInLinkToInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"image-in-link-and-input"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("https://www.apple.com/", [webView editorValue].UTF8String);
>-    checkSelectionRectsWithLogging(@[ makeCGRectValue(101, 241, 2057, 232) ], [dataInteractionSimulator finalSelectionRects]);
>-    checkSuggestedNameAndEstimatedSize(dataInteractionSimulator.get(), @"icon.png", { 215, 174 });
>-    checkTypeIdentifierIsRegisteredAtIndex(dataInteractionSimulator.get(), (NSString *)kUTTypePNG, 0);
>-}
>-
>-TEST(DataInteractionTests, ImageInLinkWithoutHREFToInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"image-in-link-and-input"];
>-    [webView stringByEvaluatingJavaScript:@"link.href = ''"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("", [webView editorValue]);
>-    checkEstimatedSize(dataInteractionSimulator.get(), { 215, 174 });
>-    checkTypeIdentifierIsRegisteredAtIndex(dataInteractionSimulator.get(), (NSString *)kUTTypePNG, 0);
>-}
>-
>-TEST(DataInteractionTests, ImageDoesNotUseElementSizeAsEstimatedSize)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"gif-and-file-input"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom: { 100, 100 } to: { 100, 300 }];
>-
>-    checkTypeIdentifierIsRegisteredAtIndex(dataInteractionSimulator.get(), (NSString *)kUTTypeGIF, 0);
>-    checkSuggestedNameAndEstimatedSize(dataInteractionSimulator.get(), @"apple.gif", { 52, 64 });
>-    EXPECT_WK_STREQ("apple.gif (image/gif)", [webView stringByEvaluatingJavaScript:@"output.textContent"]);
>-}
>-
>-TEST(DataInteractionTests, ContentEditableToContentEditable)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView loadTestPageNamed:@"autofocus-contenteditable"];
>-    [dataInteractionSimulator waitForInputSession];
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_EQ([webView stringByEvaluatingJavaScript:@"source.textContent"].length, 0UL);
>-    EXPECT_WK_STREQ("Hello world", [webView stringByEvaluatingJavaScript:@"editor.textContent"].UTF8String);
>-
>-    NSArray *observedEventNames = [dataInteractionSimulator observedEventNames];
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionEnterEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionOverEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionPerformOperationEventName]);
>-    checkSelectionRectsWithLogging(@[ makeCGRectValue(1, 201, 961, 227) ], [dataInteractionSimulator finalSelectionRects]);
>-    checkRichTextTypePrecedesPlainTextType(dataInteractionSimulator.get());
>-}
>-
>-TEST(DataInteractionTests, ContentEditableToTextarea)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView loadTestPageNamed:@"contenteditable-and-textarea"];
>-    [dataInteractionSimulator waitForInputSession];
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_EQ([webView stringByEvaluatingJavaScript:@"source.textContent"].length, 0UL);
>-    EXPECT_WK_STREQ("Hello world", [webView editorValue].UTF8String);
>-
>-    NSArray *observedEventNames = [dataInteractionSimulator observedEventNames];
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionEnterEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionOverEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionPerformOperationEventName]);
>-    checkSelectionRectsWithLogging(@[ makeCGRectValue(6, 203, 990, 232) ], [dataInteractionSimulator finalSelectionRects]);
>-    checkRichTextTypePrecedesPlainTextType(dataInteractionSimulator.get());
>-}
>-
>-TEST(DataInteractionTests, ContentEditableMoveParagraphs)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView loadTestPageNamed:@"two-paragraph-contenteditable"];
>-    [dataInteractionSimulator waitForInputSession];
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(250, 450)];
>-
>-    NSString *finalTextContent = [webView stringByEvaluatingJavaScript:@"editor.textContent"];
>-    NSUInteger firstParagraphOffset = [finalTextContent rangeOfString:@"This is the first paragraph"].location;
>-    NSUInteger secondParagraphOffset = [finalTextContent rangeOfString:@"This is the second paragraph"].location;
>-
>-    EXPECT_FALSE(firstParagraphOffset == NSNotFound);
>-    EXPECT_FALSE(secondParagraphOffset == NSNotFound);
>-    EXPECT_GT(firstParagraphOffset, secondParagraphOffset);
>-    checkSelectionRectsWithLogging(@[ makeCGRectValue(190, 100, 130, 20), makeCGRectValue(0, 120, 320, 100), makeCGRectValue(0, 220, 252, 20) ], [dataInteractionSimulator finalSelectionRects]);
>-}
>-
>-TEST(DataInteractionTests, DragImageFromContentEditable)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView synchronouslyLoadTestPageNamed:@"contenteditable-and-target"];
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 100) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target.textContent"]);
>-}
>-
>-TEST(DataInteractionTests, TextAreaToInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView loadTestPageNamed:@"textarea-to-input"];
>-    [dataInteractionSimulator waitForInputSession];
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_EQ([webView stringByEvaluatingJavaScript:@"source.value"].length, 0UL);
>-    EXPECT_WK_STREQ("Hello world", [webView editorValue].UTF8String);
>-    checkSelectionRectsWithLogging(@[ makeCGRectValue(101, 241, 990, 232) ], [dataInteractionSimulator finalSelectionRects]);
>-}
>-
>-TEST(DataInteractionTests, SinglePlainTextWordTypeIdentifiers)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView loadTestPageNamed:@"textarea-to-input"];
>-    [dataInteractionSimulator waitForInputSession];
>-    [webView stringByEvaluatingJavaScript:@"source.value = 'pneumonoultramicroscopicsilicovolcanoconiosis'"];
>-    [webView stringByEvaluatingJavaScript:@"source.selectionStart = 0"];
>-    [webView stringByEvaluatingJavaScript:@"source.selectionEnd = source.value.length"];
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    NSItemProvider *itemProvider = [dataInteractionSimulator sourceItemProviders].firstObject;
>-    NSArray *registeredTypes = [itemProvider registeredTypeIdentifiers];
>-    EXPECT_EQ(1UL, registeredTypes.count);
>-    EXPECT_WK_STREQ([(NSString *)kUTTypeUTF8PlainText UTF8String], [registeredTypes.firstObject UTF8String]);
>-    EXPECT_EQ([webView stringByEvaluatingJavaScript:@"source.value"].length, 0UL);
>-    EXPECT_EQ(UIPreferredPresentationStyleInline, itemProvider.preferredPresentationStyle);
>-    EXPECT_WK_STREQ("pneumonoultramicroscopicsilicovolcanoconiosis", [webView editorValue].UTF8String);
>-}
>-
>-TEST(DataInteractionTests, SinglePlainTextURLTypeIdentifiers)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView loadTestPageNamed:@"textarea-to-input"];
>-    [dataInteractionSimulator waitForInputSession];
>-    [webView stringByEvaluatingJavaScript:@"source.value = 'https://webkit.org/'"];
>-    [webView stringByEvaluatingJavaScript:@"source.selectionStart = 0"];
>-    [webView stringByEvaluatingJavaScript:@"source.selectionEnd = source.value.length"];
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    NSItemProvider *itemProvider = [dataInteractionSimulator sourceItemProviders].firstObject;
>-    NSArray *registeredTypes = [itemProvider registeredTypeIdentifiers];
>-    EXPECT_EQ(2UL, registeredTypes.count);
>-    EXPECT_WK_STREQ([(NSString *)kUTTypeURL UTF8String], [registeredTypes.firstObject UTF8String]);
>-    EXPECT_WK_STREQ([(NSString *)kUTTypeUTF8PlainText UTF8String], [registeredTypes.lastObject UTF8String]);
>-    EXPECT_EQ(0UL, [webView stringByEvaluatingJavaScript:@"source.value"].length);
>-    EXPECT_EQ(UIPreferredPresentationStyleInline, itemProvider.preferredPresentationStyle);
>-    EXPECT_WK_STREQ("https://webkit.org/", [webView editorValue].UTF8String);
>-}
>-
>-TEST(DataInteractionTests, LinkToInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"link-and-input"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("https://www.apple.com/", [webView editorValue].UTF8String);
>-
>-    __block bool doneLoadingURL = false;
>-    UIItemProvider *sourceItemProvider = [dataInteractionSimulator sourceItemProviders].firstObject;
>-    [sourceItemProvider loadObjectOfClass:[NSURL class] completionHandler:^(id object, NSError *error) {
>-        NSURL *url = object;
>-        EXPECT_WK_STREQ("Hello world", url._title.UTF8String ?: "");
>-        doneLoadingURL = true;
>-    }];
>-    TestWebKitAPI::Util::run(&doneLoadingURL);
>-
>-    NSArray *observedEventNames = [dataInteractionSimulator observedEventNames];
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionEnterEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionOverEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionPerformOperationEventName]);
>-    checkSelectionRectsWithLogging(@[ makeCGRectValue(101, 273, 2057, 232) ], [dataInteractionSimulator finalSelectionRects]);
>-    checkTypeIdentifierIsRegisteredAtIndex(dataInteractionSimulator.get(), (NSString *)kUTTypeURL, 0);
>-}
>-
>-TEST(DataInteractionTests, BackgroundImageLinkToInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"background-image-link-and-input"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("https://www.apple.com/", [webView editorValue].UTF8String);
>-
>-    NSArray *observedEventNames = [dataInteractionSimulator observedEventNames];
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionEnterEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionOverEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionPerformOperationEventName]);
>-    checkSelectionRectsWithLogging(@[ makeCGRectValue(101, 241, 2057, 232) ], [dataInteractionSimulator finalSelectionRects]);
>-    checkTypeIdentifierIsRegisteredAtIndex(dataInteractionSimulator.get(), (NSString *)kUTTypeURL, 0);
>-}
>-
>-TEST(DataInteractionTests, CanPreventStart)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"prevent-start"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_EQ(DataInteractionCancelled, [dataInteractionSimulator phase]);
>-    EXPECT_FALSE([webView editorContainsImageElement]);
>-
>-    NSArray *observedEventNames = [dataInteractionSimulator observedEventNames];
>-    EXPECT_FALSE([observedEventNames containsObject:DataInteractionEnterEventName]);
>-    EXPECT_FALSE([observedEventNames containsObject:DataInteractionOverEventName]);
>-    checkSelectionRectsWithLogging(@[ ], [dataInteractionSimulator finalSelectionRects]);
>-}
>-
>-TEST(DataInteractionTests, CanPreventOperation)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"prevent-operation"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_FALSE([webView editorContainsImageElement]);
>-
>-    NSArray *observedEventNames = [dataInteractionSimulator observedEventNames];
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionEnterEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionOverEventName]);
>-    checkSelectionRectsWithLogging(@[ ], [dataInteractionSimulator finalSelectionRects]);
>-}
>-
>-TEST(DataInteractionTests, EnterAndLeaveEvents)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"link-and-input"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 450)];
>-
>-    EXPECT_WK_STREQ("", [webView editorValue].UTF8String);
>-
>-    NSArray *observedEventNames = [dataInteractionSimulator observedEventNames];
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionEnterEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionOverEventName]);
>-    EXPECT_TRUE([observedEventNames containsObject:DataInteractionLeaveEventName]);
>-    EXPECT_FALSE([observedEventNames containsObject:DataInteractionPerformOperationEventName]);
>-    checkSelectionRectsWithLogging(@[ ], [dataInteractionSimulator finalSelectionRects]);
>-}
>-
>-TEST(DataInteractionTests, CanStartDragOnDivWithDraggableAttribute)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"custom-draggable-div"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 100) to:CGPointMake(100, 250)];
>-
>-    EXPECT_GT([dataInteractionSimulator sourceItemProviders].count, 0UL);
>-    NSItemProvider *itemProvider = [dataInteractionSimulator sourceItemProviders].firstObject;
>-    EXPECT_EQ(UIPreferredPresentationStyleInline, itemProvider.preferredPresentationStyle);
>-    EXPECT_TRUE([webView stringByEvaluatingJavaScript:@"!!destination.querySelector('#item')"]);
>-    EXPECT_WK_STREQ(@"PASS", [webView stringByEvaluatingJavaScript:@"item.textContent"]);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourcePlainTextToIFrame)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"contenteditable-in-iframe"];
>-
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [itemProvider registerObject:@"Hello world" visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>-    [simulator runFrom:CGPointMake(0, 0) to:CGPointMake(160, 250)];
>-
>-    auto containerLeft = [webView stringByEvaluatingJavaScript:@"container.getBoundingClientRect().left"].floatValue;
>-    auto containerTop = [webView stringByEvaluatingJavaScript:@"container.getBoundingClientRect().top"].floatValue;
>-    auto containerWidth = [webView stringByEvaluatingJavaScript:@"container.getBoundingClientRect().width"].floatValue;
>-    auto containerHeight = [webView stringByEvaluatingJavaScript:@"container.getBoundingClientRect().height"].floatValue;
>-    checkDragCaretRectIsContainedInRect([simulator lastKnownDragCaretRect], CGRectMake(containerLeft, containerTop, containerWidth, containerHeight));
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceInlineTextToFileInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-
>-    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [simulatedItemProvider setPreferredPresentationStyle:UIPreferredPresentationStyleInline];
>-    [simulatedItemProvider registerObject:@"This item provider requested inline presentation style." visibility:NSItemProviderRepresentationVisibilityAll];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>-
>-    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"output.value"]);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceJSONToFileInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-
>-    auto simulatedJSONItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *jsonData = [@"{ \"foo\": \"bar\",  \"bar\": \"baz\" }" dataUsingEncoding:NSUTF8StringEncoding];
>-    [simulatedJSONItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJSON withData:jsonData];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedJSONItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>-
>-    EXPECT_WK_STREQ("application/json", [webView stringByEvaluatingJavaScript:@"output.value"]);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceImageToFileInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-
>-    auto simulatedImageItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *imageData = UIImageJPEGRepresentation(testIconImage(), 0.5);
>-    [simulatedImageItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG withData:imageData];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedImageItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>-
>-    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>-    EXPECT_WK_STREQ("image/jpeg", outputValue.UTF8String);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceHTMLToUploadArea)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-
>-    auto simulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *htmlData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>-    [simulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:htmlData];
>-    [simulatedHTMLItemProvider setSuggestedName:@"index.html"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setShouldAllowMoveOperation:NO];
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedHTMLItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 300) to:CGPointMake(100, 300)];
>-
>-    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>-    EXPECT_WK_STREQ("text/html", outputValue.UTF8String);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceMoveOperationNotAllowed)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-    [webView stringByEvaluatingJavaScript:@"upload.dropEffect = 'move'"];
>-
>-    auto simulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *htmlData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>-    [simulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:htmlData];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setShouldAllowMoveOperation:NO];
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedHTMLItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 300) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"output.value"]);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceZIPArchiveAndURLToSingleFileInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-
>-    auto archiveProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [archiveProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeZipArchive withData:testZIPArchive()];
>-
>-    auto urlProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [urlProvider registerObject:[NSURL URLWithString:@"https://webkit.org"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ archiveProvider.get(), urlProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>-
>-    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>-    EXPECT_WK_STREQ("application/zip", outputValue.UTF8String);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceZIPArchiveToUploadArea)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeZipArchive withData:testZIPArchive()];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ itemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 300) to:CGPointMake(100, 300)];
>-
>-    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>-    EXPECT_WK_STREQ("application/zip", outputValue.UTF8String);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceImageAndHTMLToSingleFileInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-
>-    auto simulatedImageItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *imageData = UIImageJPEGRepresentation(testIconImage(), 0.5);
>-    [simulatedImageItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG withData:imageData];
>-
>-    auto simulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *htmlData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>-    [simulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:htmlData];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedHTMLItemProvider.get(), simulatedImageItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>-
>-    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>-    EXPECT_WK_STREQ("", outputValue.UTF8String);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceImageAndHTMLToMultipleFileInput)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-    [webView stringByEvaluatingJavaScript:@"input.setAttribute('multiple', '')"];
>-
>-    auto simulatedImageItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *imageData = UIImageJPEGRepresentation(testIconImage(), 0.5);
>-    [simulatedImageItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG withData:imageData];
>-
>-    auto simulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *htmlData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>-    [simulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:htmlData];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedHTMLItemProvider.get(), simulatedImageItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>-
>-    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>-    EXPECT_WK_STREQ("image/jpeg, text/html", outputValue.UTF8String);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceImageAndHTMLToUploadArea)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-
>-    auto simulatedImageItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *imageData = UIImageJPEGRepresentation(testIconImage(), 0.5);
>-    [simulatedImageItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG withData:imageData];
>-
>-    auto firstSimulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *firstHTMLData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>-    [firstSimulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:firstHTMLData];
>-
>-    auto secondSimulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *secondHTMLData = [@"<html><body>hello world</body></html>" dataUsingEncoding:NSUTF8StringEncoding];
>-    [secondSimulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:secondHTMLData];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setShouldAllowMoveOperation:NO];
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedImageItemProvider.get(), firstSimulatedHTMLItemProvider.get(), secondSimulatedHTMLItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 300) to:CGPointMake(100, 300)];
>-
>-    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>-    EXPECT_WK_STREQ("image/jpeg, text/html, text/html", outputValue.UTF8String);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceHTMLToContentEditable)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *htmlData = [@"<h1>This is a test</h1>" dataUsingEncoding:NSUTF8StringEncoding];
>-    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:htmlData];
>-    [dataInteractionSimulator setExternalItemProviders:@[ itemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-
>-    NSString *textContent = [webView stringByEvaluatingJavaScript:@"editor.textContent"];
>-    EXPECT_WK_STREQ("This is a test", textContent.UTF8String);
>-    EXPECT_TRUE([webView stringByEvaluatingJavaScript:@"!!editor.querySelector('h1')"].boolValue);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceBoldSystemAttributedStringToContentEditable)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    NSDictionary *textAttributes = @{ NSFontAttributeName: [UIFont boldSystemFontOfSize:20] };
>-    NSAttributedString *richText = [[NSAttributedString alloc] initWithString:@"This is a test" attributes:textAttributes];
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] initWithObject:richText]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ itemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("This is a test", [webView stringByEvaluatingJavaScript:@"editor.textContent"].UTF8String);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceColoredAttributedStringToContentEditable)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    NSDictionary *textAttributes = @{ NSForegroundColorAttributeName: [UIColor redColor] };
>-    NSAttributedString *richText = [[NSAttributedString alloc] initWithString:@"This is a test" attributes:textAttributes];
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] initWithObject:richText]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ itemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("rgb(255, 0, 0)", [webView stringByEvaluatingJavaScript:@"getComputedStyle(document.querySelector('p')).color"]);
>-    EXPECT_WK_STREQ("This is a test", [webView stringByEvaluatingJavaScript:@"editor.textContent"].UTF8String);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceMultipleURLsToContentEditable)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    auto firstItem = adoptNS([[UIItemProvider alloc] init]);
>-    [firstItem registerObject:[NSURL URLWithString:@"https://www.apple.com/iphone/"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    auto secondItem = adoptNS([[UIItemProvider alloc] init]);
>-    [secondItem registerObject:[NSURL URLWithString:@"https://www.apple.com/mac/"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    auto thirdItem = adoptNS([[UIItemProvider alloc] init]);
>-    [thirdItem registerObject:[NSURL URLWithString:@"https://webkit.org/"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    [dataInteractionSimulator setExternalItemProviders:@[ firstItem.get(), secondItem.get(), thirdItem.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-
>-    NSArray *droppedURLs = [webView objectByEvaluatingJavaScript:@"Array.from(editor.querySelectorAll('a')).map(a => a.href)"];
>-    EXPECT_EQ(3UL, droppedURLs.count);
>-    EXPECT_WK_STREQ("https://www.apple.com/iphone/", droppedURLs[0]);
>-    EXPECT_WK_STREQ("https://www.apple.com/mac/", droppedURLs[1]);
>-    EXPECT_WK_STREQ("https://webkit.org/", droppedURLs[2]);
>-
>-    NSArray *linksSeparatedByLine = [[webView objectByEvaluatingJavaScript:@"editor.innerText"] componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];
>-    EXPECT_EQ(3UL, linksSeparatedByLine.count);
>-    EXPECT_WK_STREQ("https://www.apple.com/iphone/", linksSeparatedByLine[0]);
>-    EXPECT_WK_STREQ("https://www.apple.com/mac/", linksSeparatedByLine[1]);
>-    EXPECT_WK_STREQ("https://webkit.org/", linksSeparatedByLine[2]);
>-}
>-
>-TEST(DataInteractionTests, RespectsExternalSourceFidelityRankings)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    // Here, our source item provider vends two representations: plain text, and then an image. If we don't respect the
>-    // fidelity order requested by the source, we'll end up assuming that the image is a higher fidelity representation
>-    // than the plain text, and erroneously insert the image. If we respect source fidelities, we'll insert text rather
>-    // than an image.
>-    auto simulatedItemProviderWithTextFirst = adoptNS([[UIItemProvider alloc] init]);
>-    [simulatedItemProviderWithTextFirst registerObject:@"Hello world" visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    [simulatedItemProviderWithTextFirst registerObject:testIconImage() visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedItemProviderWithTextFirst.get() ]];
>-
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-    EXPECT_WK_STREQ("Hello world", [webView stringByEvaluatingJavaScript:@"editor.textContent"]);
>-    EXPECT_FALSE([webView editorContainsImageElement]);
>-    [webView stringByEvaluatingJavaScript:@"editor.innerHTML = ''"];
>-
>-    // Now we register the item providers in reverse, and expect the image to be inserted instead of text.
>-    auto simulatedItemProviderWithImageFirst = adoptNS([[UIItemProvider alloc] init]);
>-    [simulatedItemProviderWithImageFirst registerObject:testIconImage() visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    [simulatedItemProviderWithImageFirst registerObject:@"Hello world" visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedItemProviderWithImageFirst.get() ]];
>-
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"editor.textContent"]);
>-    EXPECT_TRUE([webView editorContainsImageElement]);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceUTF8PlainTextOnly)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-
>-    NSString *textPayload = @"Ceci n'est pas une string";
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [simulatedItemProvider registerDataRepresentationForTypeIdentifier:(__bridge NSString *)kUTTypeUTF8PlainText options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>-    {
>-        completionBlock([textPayload dataUsingEncoding:NSUTF8StringEncoding], nil);
>-        return [NSProgress discreteProgressWithTotalUnitCount:100];
>-    }];
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-    EXPECT_WK_STREQ(textPayload.UTF8String, [webView stringByEvaluatingJavaScript:@"editor.textContent"].UTF8String);
>-    checkSelectionRectsWithLogging(@[ makeCGRectValue(1, 201, 1936, 227) ], [dataInteractionSimulator finalSelectionRects]);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceJPEGOnly)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [simulatedItemProvider registerDataRepresentationForTypeIdentifier:(__bridge NSString *)kUTTypeJPEG options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>-    {
>-        completionBlock(UIImageJPEGRepresentation(testIconImage(), 0.5), nil);
>-        return [NSProgress discreteProgressWithTotalUnitCount:100];
>-    }];
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-    EXPECT_TRUE([webView editorContainsImageElement]);
>-    checkSelectionRectsWithLogging(@[ makeCGRectValue(1, 201, 215, 174) ], [dataInteractionSimulator finalSelectionRects]);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceTitledNSURL)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>-
>-    NSURL *titledURL = [NSURL URLWithString:@"https://www.apple.com"];
>-    titledURL._title = @"Apple";
>-    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [simulatedItemProvider registerObject:titledURL visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("Apple", [webView stringByEvaluatingJavaScript:@"editor.querySelector('a').textContent"]);
>-    EXPECT_WK_STREQ("https://www.apple.com/", [webView stringByEvaluatingJavaScript:@"editor.querySelector('a').href"]);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceFileURL)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>-
>-    NSURL *URL = [NSURL URLWithString:@"file:///some/file/that/is/not/real"];
>-    UIItemProvider *simulatedItemProvider = [UIItemProvider itemProviderWithURL:URL title:@""];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedItemProvider ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-
>-    EXPECT_FALSE([[webView stringByEvaluatingJavaScript:@"!!editor.querySelector('a')"] boolValue]);
>-    EXPECT_WK_STREQ("Hello world\nfile:///some/file/that/is/not/real", [webView stringByEvaluatingJavaScript:@"document.body.innerText"]);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceOverrideDropFileUpload)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>-
>-    auto simulatedImageItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *imageData = UIImageJPEGRepresentation(testIconImage(), 0.5);
>-    [simulatedImageItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG withData:imageData];
>-
>-    auto simulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSData *firstHTMLData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>-    [simulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:firstHTMLData];
>-    [simulatedHTMLItemProvider setPreferredPresentationStyle:UIPreferredPresentationStyleAttachment];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setOverridePerformDropBlock:^NSArray<UIDragItem *> *(id <UIDropSession> session)
>-    {
>-        EXPECT_EQ(2UL, session.items.count);
>-        UIDragItem *firstItem = session.items[0];
>-        UIDragItem *secondItem = session.items[1];
>-        EXPECT_TRUE([firstItem.itemProvider.registeredTypeIdentifiers isEqual:@[ (NSString *)kUTTypeJPEG ]]);
>-        EXPECT_TRUE([secondItem.itemProvider.registeredTypeIdentifiers isEqual:@[ (NSString *)kUTTypeHTML ]]);
>-        return @[ secondItem ];
>-    }];
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedImageItemProvider.get(), simulatedHTMLItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 300) to:CGPointMake(100, 300)];
>-
>-    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>-    EXPECT_WK_STREQ("text/html", outputValue.UTF8String);
>-}
>-
>-#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>-
>-static RetainPtr<TestWKWebView> setUpTestWebViewForDataTransferItems()
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"DataTransferItem-getAsEntry"];
>-
>-    auto preferences = (WKPreferencesRef)[[webView configuration] preferences];
>-    WKPreferencesSetDataTransferItemsEnabled(preferences, true);
>-    WKPreferencesSetDirectoryUploadEnabled(preferences, true);
>-
>-    return webView;
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceDataTransferItemGetFolderAsEntry)
>-{
>-    // The expected output is sorted by alphabetical order here for consistent behavior across different test environments.
>-    // See DataTransferItem-getAsEntry.html for more details.
>-    NSArray<NSString *> *expectedOutput = @[
>-        @"Found data transfer item (kind: 'file', type: '')",
>-        @"DIR: /somedirectory",
>-        @"DIR: /somedirectory/subdirectory1",
>-        @"DIR: /somedirectory/subdirectory2",
>-        [NSString stringWithFormat:@"FILE: /somedirectory/archive.zip ('application/zip', %tu bytes)", testZIPArchive().length],
>-        [NSString stringWithFormat:@"FILE: /somedirectory/icon.png ('image/png', %tu bytes)", testIconImageData().length],
>-        @"FILE: /somedirectory/subdirectory1/text-file-1.txt ('text/plain', 43 bytes)",
>-        @"FILE: /somedirectory/subdirectory2/text-file-2.txt ('text/plain', 44 bytes)"
>-    ];
>-
>-    auto webView = setUpTestWebViewForDataTransferItems();
>-    __block bool done = false;
>-    [webView performAfterReceivingMessage:@"dropped" action:^() {
>-        done = true;
>-    }];
>-
>-    runTestWithTemporaryFolder(^(NSURL *folderURL) {
>-        auto itemProvider = adoptNS([[NSItemProvider alloc] init]);
>-        [itemProvider setSuggestedName:@"somedirectory"];
>-        [itemProvider registerFileRepresentationForTypeIdentifier:(NSString *)kUTTypeFolder fileOptions:0 visibility:NSItemProviderRepresentationVisibilityAll loadHandler:[capturedFolderURL = retainPtr(folderURL)] (FileLoadCompletionBlock completionHandler) -> NSProgress * {
>-            completionHandler(capturedFolderURL.get(), NO, nil);
>-            return nil;
>-        }];
>-
>-        auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-        [dataInteractionSimulator setExternalItemProviders:@[ itemProvider.get() ]];
>-        [dataInteractionSimulator runFrom:CGPointMake(50, 50) to:CGPointMake(150, 50)];
>-    });
>-
>-    TestWebKitAPI::Util::run(&done);
>-    EXPECT_WK_STREQ([expectedOutput componentsJoinedByString:@"\n"], [webView stringByEvaluatingJavaScript:@"output.value"]);
>-}
>-
>-TEST(DataInteractionTests, ExternalSourceDataTransferItemGetPlainTextFileAsEntry)
>-{
>-    NSArray<NSString *> *expectedOutput = @[
>-        @"Found data transfer item (kind: 'file', type: 'text/plain')",
>-        @"FILE: /foo.txt ('text/plain', 28 bytes)"
>-    ];
>-
>-    auto webView = setUpTestWebViewForDataTransferItems();
>-    __block bool done = false;
>-    [webView performAfterReceivingMessage:@"dropped" action:^() {
>-        done = true;
>-    }];
>-
>-    runTestWithTemporaryTextFile(^(NSURL *fileURL) {
>-        auto itemProvider = adoptNS([[NSItemProvider alloc] init]);
>-        [itemProvider setSuggestedName:@"foo"];
>-        [itemProvider registerFileRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText fileOptions:0 visibility:NSItemProviderRepresentationVisibilityAll loadHandler:[capturedFileURL = retainPtr(fileURL)](FileLoadCompletionBlock completionHandler) -> NSProgress * {
>-            completionHandler(capturedFileURL.get(), NO, nil);
>-            return nil;
>-        }];
>-
>-        auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-        [dataInteractionSimulator setExternalItemProviders:@[ itemProvider.get() ]];
>-        [dataInteractionSimulator runFrom:CGPointMake(50, 50) to:CGPointMake(150, 50)];
>-    });
>-
>-    TestWebKitAPI::Util::run(&done);
>-    EXPECT_WK_STREQ([expectedOutput componentsJoinedByString:@"\n"], [webView stringByEvaluatingJavaScript:@"output.value"]);
>-}
>-
>-#endif // __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>-
>-TEST(DataInteractionTests, ExternalSourceOverrideDropInsertURL)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setOverridePerformDropBlock:^NSArray<UIDragItem *> *(id <UIDropSession> session)
>-    {
>-        NSMutableArray<UIDragItem *> *allowedItems = [NSMutableArray array];
>-        for (UIDragItem *item in session.items) {
>-            if ([item.itemProvider.registeredTypeIdentifiers containsObject:(NSString *)kUTTypeURL])
>-                [allowedItems addObject:item];
>-        }
>-        EXPECT_EQ(1UL, allowedItems.count);
>-        return allowedItems;
>-    }];
>-
>-    auto firstItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [firstItemProvider registerObject:@"This is a string." visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    auto secondItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [secondItemProvider registerObject:[NSURL URLWithString:@"https://webkit.org/"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    [dataInteractionSimulator setExternalItemProviders:@[ firstItemProvider.get(), secondItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("https://webkit.org/", [webView stringByEvaluatingJavaScript:@"editor.textContent"]);
>-}
>-
>-TEST(DataInteractionTests, OverrideDataInteractionOperation)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"simple"];
>-
>-    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [simulatedItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:[@"<body></body>" dataUsingEncoding:NSUTF8StringEncoding]];
>-
>-    __block bool finishedLoadingData = false;
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>-    [dataInteractionSimulator setOverrideDataInteractionOperationBlock:^NSUInteger(NSUInteger operation, id session)
>-    {
>-        EXPECT_EQ(0U, operation);
>-        return UIDropOperationCopy;
>-    }];
>-    [dataInteractionSimulator setDataInteractionOperationCompletionBlock:^(BOOL handled, NSArray *itemProviders) {
>-        EXPECT_FALSE(handled);
>-        [itemProviders.firstObject loadDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML completionHandler:^(NSData *data, NSError *error) {
>-            NSString *text = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease];
>-            EXPECT_WK_STREQ("<body></body>", text.UTF8String);
>-            EXPECT_FALSE(!!error);
>-            finishedLoadingData = true;
>-        }];
>-    }];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-    TestWebKitAPI::Util::run(&finishedLoadingData);
>-}
>-
>-TEST(DataInteractionTests, InjectedBundleOverridePerformTwoStepDrop)
>-{
>-    WKWebViewConfiguration *configuration = [WKWebViewConfiguration _test_configurationWithTestPlugInClassName:@"BundleEditingDelegatePlugIn"];
>-    [configuration.processPool _setObject:@YES forBundleParameter:@"BundleOverridePerformTwoStepDrop"];
>-
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:configuration]);
>-    [webView loadTestPageNamed:@"autofocus-contenteditable"];
>-    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>-
>-    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [simulatedItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>-    {
>-        completionBlock([@"Hello world" dataUsingEncoding:NSUTF8StringEncoding], nil);
>-        return [NSProgress discreteProgressWithTotalUnitCount:100];
>-    }];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-
>-    EXPECT_EQ(0UL, [webView stringByEvaluatingJavaScript:@"editor.textContent"].length);
>-}
>-
>-TEST(DataInteractionTests, InjectedBundleAllowPerformTwoStepDrop)
>-{
>-    WKWebViewConfiguration *configuration = [WKWebViewConfiguration _test_configurationWithTestPlugInClassName:@"BundleEditingDelegatePlugIn"];
>-    [configuration.processPool _setObject:@NO forBundleParameter:@"BundleOverridePerformTwoStepDrop"];
>-
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:configuration]);
>-    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>-    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>-
>-    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [simulatedItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>-    {
>-        completionBlock([@"Hello world" dataUsingEncoding:NSUTF8StringEncoding], nil);
>-        return [NSProgress discreteProgressWithTotalUnitCount:100];
>-    }];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>-    [dataInteractionSimulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>-
>-    EXPECT_WK_STREQ("Hello world", [webView stringByEvaluatingJavaScript:@"editor.textContent"].UTF8String);
>-}
>-
>-TEST(DataInteractionTests, InjectedBundleImageElementData)
>-{
>-    WKWebViewConfiguration *configuration = [WKWebViewConfiguration _test_configurationWithTestPlugInClassName:@"BundleEditingDelegatePlugIn"];
>-    [configuration _setAttachmentElementEnabled:YES];
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:configuration]);
>-    [webView synchronouslyLoadTestPageNamed:@"image-and-contenteditable"];
>-
>-    __block RetainPtr<NSString> injectedString;
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setConvertItemProvidersBlock:^NSArray *(UIItemProvider *itemProvider, NSArray *, NSDictionary *data)
>-    {
>-        injectedString = adoptNS([[NSString alloc] initWithData:data[InjectedBundlePasteboardDataType] encoding:NSUTF8StringEncoding]);
>-        return @[ itemProvider ];
>-    }];
>-
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 250)];
>-
>-    EXPECT_WK_STREQ("hello", [injectedString UTF8String]);
>-}
>-
>-TEST(DataInteractionTests, InjectedBundleAttachmentElementData)
>-{
>-    WKWebViewConfiguration *configuration = [WKWebViewConfiguration _test_configurationWithTestPlugInClassName:@"BundleEditingDelegatePlugIn"];
>-    [configuration _setAttachmentElementEnabled:YES];
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:configuration]);
>-    [webView synchronouslyLoadTestPageNamed:@"attachment-element"];
>-
>-    __block RetainPtr<NSString> injectedString;
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setConvertItemProvidersBlock:^NSArray *(UIItemProvider *itemProvider, NSArray *, NSDictionary *data)
>-    {
>-        injectedString = adoptNS([[NSString alloc] initWithData:data[InjectedBundlePasteboardDataType] encoding:NSUTF8StringEncoding]);
>-        return @[ itemProvider ];
>-    }];
>-
>-    [dataInteractionSimulator runFrom:CGPointMake(50, 50) to:CGPointMake(50, 400)];
>-
>-    EXPECT_WK_STREQ("hello", [injectedString UTF8String]);
>-    EXPECT_TRUE([webView stringByEvaluatingJavaScript:@"getSelection().isCollapsed"].boolValue);
>-}
>-
>-TEST(DataInteractionTests, LargeImageToTargetDiv)
>-{
>-    auto testWebViewConfiguration = adoptNS([[WKWebViewConfiguration alloc] init]);
>-    [[testWebViewConfiguration preferences] _setLargeImageAsyncDecodingEnabled:NO];
>-
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:testWebViewConfiguration.get()]);
>-    [webView synchronouslyLoadTestPageNamed:@"div-and-large-image"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(200, 400) to:CGPointMake(200, 150)];
>-    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target.textContent"].UTF8String);
>-    checkFirstTypeIsPresentAndSecondTypeIsMissing(dataInteractionSimulator.get(), kUTTypePNG, kUTTypeFileURL);
>-    checkEstimatedSize(dataInteractionSimulator.get(), { 2000, 2000 });
>-}
>-
>-TEST(DataInteractionTests, LinkWithEmptyHREF)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"link-and-input"];
>-    [webView stringByEvaluatingJavaScript:@"document.querySelector('a').href = ''"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-
>-    EXPECT_EQ(DataInteractionCancelled, [dataInteractionSimulator phase]);
>-    EXPECT_WK_STREQ("", [webView editorValue].UTF8String);
>-}
>-
>-TEST(DataInteractionTests, CancelledLiftDoesNotCauseSubsequentDragsToFail)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"link-and-target-div"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setConvertItemProvidersBlock:^NSArray *(UIItemProvider *, NSArray *, NSDictionary *)
>-    {
>-        return @[ ];
>-    }];
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-    EXPECT_EQ(DataInteractionCancelled, [dataInteractionSimulator phase]);
>-    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"target.textContent"]);
>-    NSString *outputText = [webView stringByEvaluatingJavaScript:@"output.textContent"];
>-    checkStringArraysAreEqual(@[@"dragstart", @"dragend"], [outputText componentsSeparatedByString:@" "]);
>-
>-    [webView stringByEvaluatingJavaScript:@"output.innerHTML = ''"];
>-    [dataInteractionSimulator setConvertItemProvidersBlock:^NSArray *(UIItemProvider *itemProvider, NSArray *, NSDictionary *)
>-    {
>-        return @[ itemProvider ];
>-    }];
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target.textContent"]);
>-    [webView stringByEvaluatingJavaScript:@"output.textContent"];
>-    checkStringArraysAreEqual(@[@"dragstart", @"dragend"], [outputText componentsSeparatedByString:@" "]);
>-}
>-
>-static void testDragAndDropOntoTargetElements(TestWKWebView *webView)
>-{
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView]);
>-    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(50, 250)];
>-    EXPECT_WK_STREQ("rgb(0, 128, 0)", [webView stringByEvaluatingJavaScript:@"getComputedStyle(target1).backgroundColor"]);
>-    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target1.textContent"]);
>-
>-    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(250, 50)];
>-    EXPECT_WK_STREQ("rgb(0, 128, 0)", [webView stringByEvaluatingJavaScript:@"getComputedStyle(target2).backgroundColor"]);
>-    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target2.textContent"]);
>-
>-    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(250, 250)];
>-    EXPECT_WK_STREQ("rgb(0, 128, 0)", [webView stringByEvaluatingJavaScript:@"getComputedStyle(target3).backgroundColor"]);
>-    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target3.textContent"]);
>-}
>-
>-TEST(DataInteractionTests, DragEventClientCoordinatesBasic)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"drop-targets"];
>-
>-    testDragAndDropOntoTargetElements(webView.get());
>-}
>-
>-TEST(DataInteractionTests, DragEventClientCoordinatesWithScrollOffset)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"drop-targets"];
>-    [webView stringByEvaluatingJavaScript:@"document.body.style.margin = '1000px 0'"];
>-    [webView stringByEvaluatingJavaScript:@"document.scrollingElement.scrollTop = 1000"];
>-    [webView waitForNextPresentationUpdate];
>-
>-    testDragAndDropOntoTargetElements(webView.get());
>-}
>-
>-TEST(DataInteractionTests, DragEventPageCoordinatesBasic)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"drop-targets"];
>-    [webView stringByEvaluatingJavaScript:@"window.usePageCoordinates = true"];
>-
>-    testDragAndDropOntoTargetElements(webView.get());
>-}
>-
>-TEST(DataInteractionTests, DragEventPageCoordinatesWithScrollOffset)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"drop-targets"];
>-    [webView stringByEvaluatingJavaScript:@"document.body.style.margin = '1000px 0'"];
>-    [webView stringByEvaluatingJavaScript:@"document.scrollingElement.scrollTop = 1000"];
>-    [webView stringByEvaluatingJavaScript:@"window.usePageCoordinates = true"];
>-    [webView waitForNextPresentationUpdate];
>-
>-    testDragAndDropOntoTargetElements(webView.get());
>-}
>-
>-TEST(DataInteractionTests, DoNotCrashWhenSelectionIsClearedInDragStart)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dragstart-clear-selection"];
>-
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [simulator runFrom:CGPointMake(100, 100) to:CGPointMake(100, 100)];
>-
>-    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"paragraph.textContent"]);
>-}
>-
>-// FIXME: Re-enable this test once we resolve <https://bugs.webkit.org/show_bug.cgi?id=175204>
>-#if __IPHONE_OS_VERSION_MAX_ALLOWED <= 110401
>-TEST(DataInteractionTests, CustomActionSheetPopover)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"link-and-target-div"];
>-
>-    auto dataInteractionSimulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [dataInteractionSimulator setShouldEnsureUIApplication:YES];
>-
>-    __block BOOL didInvokeCustomActionSheet = NO;
>-    [dataInteractionSimulator setShowCustomActionSheetBlock:^BOOL(_WKActivatedElementInfo *element)
>-    {
>-        EXPECT_EQ(_WKActivatedElementTypeLink, element.type);
>-        EXPECT_WK_STREQ("Hello world", element.title.UTF8String);
>-        didInvokeCustomActionSheet = YES;
>-        return YES;
>-    }];
>-    [dataInteractionSimulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>-    EXPECT_TRUE(didInvokeCustomActionSheet);
>-    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target.textContent"].UTF8String);
>-}
>-#endif
>-
>-TEST(DataInteractionTests, UnresponsivePageDoesNotHangUI)
>-{
>-    _WKProcessPoolConfiguration *processPoolConfiguration = [[[_WKProcessPoolConfiguration alloc] init] autorelease];
>-    processPoolConfiguration.ignoreSynchronousMessagingTimeoutsForTesting = YES;
>-
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:[[[WKWebViewConfiguration alloc] init] autorelease] processPoolConfiguration:processPoolConfiguration]);
>-    [webView synchronouslyLoadTestPageNamed:@"simple"];
>-    [webView evaluateJavaScript:@"while(1);" completionHandler:nil];
>-
>-    // The test passes if we can prepare for data interaction without timing out.
>-    auto dragSession = adoptNS([[MockDragSession alloc] init]);
>-    [(id <UIDragInteractionDelegate_ForWebKitOnly>)[webView dragInteractionDelegate] _dragInteraction:[webView dragInteraction] prepareForSession:dragSession.get() completion:^() { }];
>-}
>-
>-TEST(DataInteractionTests, WebItemProviderPasteboardLoading)
>-{
>-    static NSString *fastString = @"This data loads quickly";
>-    static NSString *slowString = @"This data loads slowly";
>-
>-    WebItemProviderPasteboard *pasteboard = [WebItemProviderPasteboard sharedInstance];
>-    auto fastItem = adoptNS([[UIItemProvider alloc] init]);
>-    [fastItem registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>-    {
>-        completionBlock([fastString dataUsingEncoding:NSUTF8StringEncoding], nil);
>-        return nil;
>-    }];
>-
>-    auto slowItem = adoptNS([[UIItemProvider alloc] init]);
>-    [slowItem registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>-    {
>-        sleep(2_s);
>-        completionBlock([slowString dataUsingEncoding:NSUTF8StringEncoding], nil);
>-        return nil;
>-    }];
>-
>-    __block bool hasRunFirstCompletionBlock = false;
>-    pasteboard.itemProviders = @[ fastItem.get(), slowItem.get() ];
>-    [pasteboard doAfterLoadingProvidedContentIntoFileURLs:^(NSArray<NSURL *> *urls) {
>-        EXPECT_EQ(2UL, urls.count);
>-        auto firstString = adoptNS([[NSString alloc] initWithContentsOfURL:urls[0] encoding:NSUTF8StringEncoding error:nil]);
>-        auto secondString = adoptNS([[NSString alloc] initWithContentsOfURL:urls[1] encoding:NSUTF8StringEncoding error:nil]);
>-        EXPECT_WK_STREQ(fastString, [firstString UTF8String]);
>-        EXPECT_WK_STREQ(slowString, [secondString UTF8String]);
>-        hasRunFirstCompletionBlock = true;
>-    } synchronousTimeout:600];
>-    EXPECT_TRUE(hasRunFirstCompletionBlock);
>-
>-    __block bool hasRunSecondCompletionBlock = false;
>-    [pasteboard doAfterLoadingProvidedContentIntoFileURLs:^(NSArray<NSURL *> *urls) {
>-        EXPECT_EQ(2UL, urls.count);
>-        auto firstString = adoptNS([[NSString alloc] initWithContentsOfURL:urls[0] encoding:NSUTF8StringEncoding error:nil]);
>-        auto secondString = adoptNS([[NSString alloc] initWithContentsOfURL:urls[1] encoding:NSUTF8StringEncoding error:nil]);
>-        EXPECT_WK_STREQ(fastString, [firstString UTF8String]);
>-        EXPECT_WK_STREQ(slowString, [secondString UTF8String]);
>-        hasRunSecondCompletionBlock = true;
>-    } synchronousTimeout:0];
>-    EXPECT_FALSE(hasRunSecondCompletionBlock);
>-    TestWebKitAPI::Util::run(&hasRunSecondCompletionBlock);
>-}
>-
>-TEST(DataInteractionTests, DoNotCrashWhenSelectionMovesOffscreenAfterDragStart)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dragstart-change-selection-offscreen"];
>-
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [simulator runFrom:CGPointMake(100, 100) to:CGPointMake(100, 100)];
>-
>-    EXPECT_WK_STREQ("FAR OFFSCREEN", [webView stringByEvaluatingJavaScript:@"getSelection().getRangeAt(0).toString()"]);
>-}
>-
>-TEST(DataInteractionTests, AdditionalItemsCanBePreventedOnDragStart)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"selected-text-image-link-and-editable"];
>-    [webView stringByEvaluatingJavaScript:@"link.addEventListener('dragstart', e => e.preventDefault())"];
>-    [webView stringByEvaluatingJavaScript:@"image.addEventListener('dragstart', e => e.preventDefault())"];
>-
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(50, 400) additionalItemRequestLocations:@{
>-        @0.33: [NSValue valueWithCGPoint:CGPointMake(50, 150)],
>-        @0.66: [NSValue valueWithCGPoint:CGPointMake(50, 250)]
>-    }];
>-    EXPECT_WK_STREQ("ABCD", [webView stringByEvaluatingJavaScript:@"editor.textContent"]);
>-}
>-
>-TEST(DataInteractionTests, AdditionalLinkAndImageIntoContentEditable)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"selected-text-image-link-and-editable"];
>-
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(50, 400) additionalItemRequestLocations:@{
>-        @0.33: [NSValue valueWithCGPoint:CGPointMake(50, 150)],
>-        @0.66: [NSValue valueWithCGPoint:CGPointMake(50, 250)]
>-    }];
>-    EXPECT_WK_STREQ("ABCDA link", [webView stringByEvaluatingJavaScript:@"editor.textContent"]);
>-    EXPECT_TRUE([webView stringByEvaluatingJavaScript:@"!!editor.querySelector('img')"]);
>-    EXPECT_WK_STREQ("https://www.apple.com/", [webView stringByEvaluatingJavaScript:@"editor.querySelector('a').href"]);
>-}
>-
>-TEST(DataInteractionTests, DragLiftPreviewDataTransferSetDragImage)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"DataTransfer-setDragImage"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    // Use DataTransfer.setDragImage to specify an existing image element in the DOM.
>-    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(250, 50)];
>-    checkCGRectIsEqualToCGRectWithLogging({{100, 50}, {215, 174}}, [simulator liftPreviews][0].view.frame);
>-
>-    // Use DataTransfer.setDragImage to specify an existing image element in the DOM, with x and y offsets.
>-    [simulator runFrom:CGPointMake(10, 150) to:CGPointMake(250, 150)];
>-    checkCGRectIsEqualToCGRectWithLogging({{-90, 50}, {215, 174}}, [simulator liftPreviews][0].view.frame);
>-
>-    // Use DataTransfer.setDragImage to specify a newly created Image, disconnected from the DOM.
>-    [simulator runFrom:CGPointMake(100, 250) to:CGPointMake(250, 250)];
>-    checkCGRectIsEqualToCGRectWithLogging({{100, 250}, {215, 174}}, [simulator liftPreviews][0].view.frame);
>-
>-    // Don't use DataTransfer.setDragImage and fall back to snapshotting the dragged element.
>-    [simulator runFrom:CGPointMake(50, 350) to:CGPointMake(250, 350)];
>-    checkCGRectIsEqualToCGRectWithLogging({{0, 300}, {300, 100}}, [simulator liftPreviews][0].view.frame);
>-
>-    // Perform a normal drag on an image.
>-    [simulator runFrom:CGPointMake(50, 450) to:CGPointMake(250, 450)];
>-    checkCGRectIsEqualToCGRectWithLogging({{0, 400}, {215, 174}}, [simulator liftPreviews][0].view.frame);
>-}
>-
>-#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>-
>-static NSData *testIconImageData()
>-{
>-    return [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"icon" ofType:@"png" inDirectory:@"TestWebKitAPI.resources"]];
>-}
>-
>-TEST(DataInteractionTests, DataTransferGetDataWhenDroppingImageAndMarkup)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    WKPreferencesSetCustomPasteboardDataEnabled((WKPreferencesRef)[webView configuration].preferences, true);
>-    [webView synchronouslyLoadTestPageNamed:@"DataTransfer"];
>-
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypePNG withData:testIconImageData()];
>-    NSString *markupString = @"<script>bar()</script><strong onmousedown=javascript:void(0)>HELLO WORLD</strong>";
>-    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:[markupString dataUsingEncoding:NSUTF8StringEncoding]];
>-    [itemProvider setSuggestedName:@"icon"];
>-    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>-    [simulator runFrom:CGPointZero to:CGPointMake(50, 100)];
>-
>-    EXPECT_WK_STREQ("Files, text/html", [webView stringByEvaluatingJavaScript:@"types.textContent"]);
>-    EXPECT_WK_STREQ("(STRING, text/html), (FILE, image/png)", [webView stringByEvaluatingJavaScript:@"items.textContent"]);
>-    EXPECT_WK_STREQ("('icon.png', image/png)", [webView stringByEvaluatingJavaScript:@"files.textContent"]);
>-    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"urlData.textContent"]);
>-    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"textData.textContent"]);
>-    EXPECT_WK_STREQ("HELLO WORLD", [webView stringByEvaluatingJavaScript:@"htmlData.textContent"]);
>-    EXPECT_FALSE([[webView stringByEvaluatingJavaScript:@"rawHTMLData.textContent"] containsString:@"script"]);
>-}
>-
>-TEST(DataInteractionTests, DataTransferGetDataWhenDroppingPlainText)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView stringByEvaluatingJavaScript:@"select(plain)"];
>-    [simulator runFrom:CGPointMake(50, 75) to:CGPointMake(50, 375)];
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover": @{ @"text/plain" : @"" },
>-        @"drop": @{ @"text/plain" : @"Plain text" }
>-    });
>-}
>-
>-TEST(DataInteractionTests, DataTransferGetDataWhenDroppingCustomData)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>-    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>-    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover" : @{
>-            @"text/plain" : @"",
>-            @"foo/plain" : @"",
>-            @"text/html" : @"",
>-            @"bar/html" : @"",
>-            @"text/uri-list" : @"",
>-            @"baz/uri-list" : @""
>-        },
>-        @"drop" : @{
>-            @"text/plain" : @"ben bitdiddle",
>-            @"foo/plain" : @"eva lu ator",
>-            @"text/html" : @"<b>bold text</b>",
>-            @"bar/html" : @"<i>italic text</i>",
>-            @"text/uri-list" : @"https://www.apple.com",
>-            @"baz/uri-list" : @"https://www.webkit.org"
>-        }
>-    });
>-}
>-
>-TEST(DataInteractionTests, DataTransferGetDataWhenDroppingURL)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView stringByEvaluatingJavaScript:@"rich.innerHTML = '<a href=\"https://www.apple.com/\">This is a link.</a>'"];
>-    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover": @{
>-            @"text/uri-list" : @"",
>-            @"text/plain" : @""
>-        },
>-        @"drop": @{
>-            @"text/uri-list" : @"https://www.apple.com/",
>-            @"text/plain" : @"https://www.apple.com/"
>-        }
>-    });
>-}
>-
>-TEST(DataInteractionTests, DataTransferGetDataWhenDroppingImageWithFileURL)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSURL *iconURL = [[NSBundle mainBundle] URLForResource:@"icon" withExtension:@"png" subdirectory:@"TestWebKitAPI.resources"];
>-    [itemProvider registerFileRepresentationForTypeIdentifier:(NSString *)kUTTypePNG fileOptions:0 visibility:NSItemProviderRepresentationVisibilityAll loadHandler:[protectedIconURL = retainPtr(iconURL)] (FileLoadCompletionBlock completionHandler) -> NSProgress * {
>-        completionHandler(protectedIconURL.get(), NO, nil);
>-        return nil;
>-    }];
>-    [itemProvider registerObject:iconURL visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>-
>-    [simulator runFrom:CGPointMake(300, 375) to:CGPointMake(50, 375)];
>-
>-    // File URLs should never be exposed directly to web content, so DataTransfer.getData should return an empty string here.
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover": @{ @"Files": @"", @"text/uri-list": @"" },
>-        @"drop": @{ @"Files": @"", @"text/uri-list": @"" }
>-    });
>-}
>-
>-TEST(DataInteractionTests, DataTransferGetDataWhenDroppingImageWithHTTPURL)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG visibility:NSItemProviderRepresentationVisibilityAll loadHandler:^NSProgress *(DataLoadCompletionBlock completionHandler)
>-    {
>-        completionHandler(UIImageJPEGRepresentation(testIconImage(), 0.5), nil);
>-        return nil;
>-    }];
>-    [itemProvider registerObject:[NSURL URLWithString:@"http://webkit.org"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>-    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>-
>-    [simulator runFrom:CGPointMake(300, 375) to:CGPointMake(50, 375)];
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover": @{ @"Files": @"", @"text/uri-list": @"" },
>-        @"drop": @{ @"Files": @"", @"text/uri-list": @"http://webkit.org/" }
>-    });
>-}
>-
>-TEST(DataInteractionTests, DataTransferGetDataWhenDroppingRespectsPresentationStyle)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    runTestWithTemporaryTextFile(^(NSURL *fileURL) {
>-        auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>-        [itemProvider registerFileRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText fileOptions:0 visibility:NSItemProviderRepresentationVisibilityAll loadHandler:[protectedFileURL = retainPtr(fileURL)] (FileLoadCompletionBlock completionHandler) -> NSProgress * {
>-            completionHandler(protectedFileURL.get(), NO, nil);
>-            return nil;
>-        }];
>-        [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>-
>-        [itemProvider setPreferredPresentationStyle:UIPreferredPresentationStyleAttachment];
>-        [simulator runFrom:CGPointMake(300, 375) to:CGPointMake(50, 375)];
>-        checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-            @"dragover": @{ @"Files" : @"" },
>-            @"drop": @{ @"Files" : @"" }
>-        });
>-
>-        [itemProvider setPreferredPresentationStyle:UIPreferredPresentationStyleInline];
>-        [simulator runFrom:CGPointMake(300, 375) to:CGPointMake(50, 375)];
>-        checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-            @"dragover": @{ @"text/plain" : @"" },
>-            @"drop": @{ @"text/plain" : @"This is a tiny blob of text." }
>-        });
>-    });
>-}
>-
>-TEST(DataInteractionTests, DataTransferSetDataCannotWritePlatformTypes)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>-    [webView stringByEvaluatingJavaScript:@"customData = { 'text/plain' : 'foo', 'com.adobe.pdf' : 'try and decode me!' }"];
>-    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>-
>-    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>-    checkFirstTypeIsPresentAndSecondTypeIsMissing(simulator.get(), kUTTypeUTF8PlainText, kUTTypePDF);
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover": @{
>-            @"text/plain": @"",
>-            @"com.adobe.pdf": @""
>-        },
>-        @"drop": @{
>-            @"text/plain": @"foo",
>-            @"com.adobe.pdf": @"try and decode me!"
>-        }
>-    });
>-}
>-
>-TEST(DataInteractionTests, DataTransferGetDataReadPlainAndRichText)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"DataTransfer"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    NSDictionary *textAttributes = @{ NSFontAttributeName: [UIFont boldSystemFontOfSize:20] };
>-    NSAttributedString *richText = [[NSAttributedString alloc] initWithString:@"WebKit" attributes:textAttributes];
>-    [itemProvider registerObject:richText visibility:NSItemProviderRepresentationVisibilityAll];
>-    [itemProvider registerObject:[NSURL URLWithString:@"https://www.webkit.org/"] visibility:NSItemProviderRepresentationVisibilityAll];
>-    [itemProvider registerObject:@"WebKit" visibility:NSItemProviderRepresentationVisibilityAll];
>-
>-    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>-    [simulator runFrom:CGPointZero to:CGPointMake(50, 100)];
>-
>-    EXPECT_WK_STREQ("text/html, text/plain, text/uri-list", [webView stringByEvaluatingJavaScript:@"types.textContent"]);
>-    EXPECT_WK_STREQ("WebKit", [webView stringByEvaluatingJavaScript:@"textData.textContent"]);
>-    EXPECT_WK_STREQ("https://www.webkit.org/", [webView stringByEvaluatingJavaScript:@"urlData.textContent"]);
>-    EXPECT_WK_STREQ("WebKit", [webView stringByEvaluatingJavaScript:@"htmlData.textContent"]);
>-    EXPECT_WK_STREQ("(STRING, text/html), (STRING, text/plain), (STRING, text/uri-list)", [webView stringByEvaluatingJavaScript:@"items.textContent"]);
>-    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"files.textContent"]);
>-}
>-
>-TEST(DataInteractionTests, DataTransferSuppressGetDataDueToPresenceOfTextFile)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"DataTransfer"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [itemProvider registerObject:@"Hello world" visibility:NSItemProviderRepresentationVisibilityAll];
>-    [itemProvider setSuggestedName:@"hello.txt"];
>-
>-    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>-    [simulator runFrom:CGPointZero to:CGPointMake(50, 100)];
>-
>-    EXPECT_WK_STREQ("Files", [webView stringByEvaluatingJavaScript:@"types.textContent"]);
>-    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"textData.textContent"]);
>-    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"urlData.textContent"]);
>-    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"htmlData.textContent"]);
>-    EXPECT_WK_STREQ("(FILE, text/plain)", [webView stringByEvaluatingJavaScript:@"items.textContent"]);
>-    EXPECT_WK_STREQ("('hello.txt', text/plain)", [webView stringByEvaluatingJavaScript:@"files.textContent"]);
>-}
>-
>-TEST(DataInteractionTests, DataTransferGetDataCannotReadPrivateArbitraryTypes)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>-    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeMP3 visibility:NSItemProviderRepresentationVisibilityAll loadHandler:^NSProgress *(DataLoadCompletionBlock completionHandler)
>-    {
>-        completionHandler([@"this is a test" dataUsingEncoding:NSUTF8StringEncoding], nil);
>-        return nil;
>-    }];
>-    [itemProvider registerDataRepresentationForTypeIdentifier:@"org.WebKit.TestWebKitAPI.custom-pasteboard-type" visibility:NSItemProviderRepresentationVisibilityAll loadHandler:^NSProgress *(DataLoadCompletionBlock completionHandler)
>-    {
>-        completionHandler([@"this is another test" dataUsingEncoding:NSUTF8StringEncoding], nil);
>-        return nil;
>-    }];
>-    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>-    [itemProvider setPreferredPresentationStyle:UIPreferredPresentationStyleInline];
>-    [simulator runFrom:CGPointMake(300, 375) to:CGPointMake(50, 375)];
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover": @{ },
>-        @"drop": @{ }
>-    });
>-}
>-
>-TEST(DataInteractionTests, DataTransferSetDataValidURL)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>-    [webView stringByEvaluatingJavaScript:@"customData = { 'url' : 'https://webkit.org/b/123' }"];
>-    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>-
>-    __block bool done = false;
>-    [simulator.get() setOverridePerformDropBlock:^NSArray<UIDragItem *> *(id <UIDropSession> session)
>-    {
>-        EXPECT_EQ(1UL, session.items.count);
>-        auto *item = session.items[0].itemProvider;
>-        EXPECT_TRUE([item.registeredTypeIdentifiers containsObject:(NSString *)kUTTypeURL]);
>-        EXPECT_TRUE([item canLoadObjectOfClass: [NSURL class]]);
>-        [item loadObjectOfClass:[NSURL class] completionHandler:^(id<NSItemProviderReading> url, NSError *error) {
>-            EXPECT_TRUE([url isKindOfClass: [NSURL class]]);
>-            EXPECT_WK_STREQ([(NSURL *)url absoluteString], @"https://webkit.org/b/123");
>-            done = true;
>-        }];
>-        return session.items;
>-    }];
>-    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>-
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover": @{
>-            @"text/uri-list": @"",
>-        },
>-        @"drop": @{
>-            @"text/uri-list": @"https://webkit.org/b/123",
>-        }
>-    });
>-    TestWebKitAPI::Util::run(&done);
>-}
>-
>-TEST(DataInteractionTests, DataTransferSetDataUnescapedURL)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>-    [webView stringByEvaluatingJavaScript:@"customData = { 'url' : 'http://webkit.org/b/\u4F60\u597D;?x=8 + 6' }"];
>-    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>-
>-    __block bool done = false;
>-    [simulator.get() setOverridePerformDropBlock:^NSArray<UIDragItem *> *(id <UIDropSession> session)
>-    {
>-        EXPECT_EQ(1UL, session.items.count);
>-        auto *item = session.items[0].itemProvider;
>-        EXPECT_TRUE([item.registeredTypeIdentifiers containsObject:(NSString *)kUTTypeURL]);
>-        EXPECT_TRUE([item canLoadObjectOfClass: [NSURL class]]);
>-        [item loadObjectOfClass:[NSURL class] completionHandler:^(id<NSItemProviderReading> url, NSError *error) {
>-            EXPECT_TRUE([url isKindOfClass: [NSURL class]]);
>-            EXPECT_WK_STREQ([(NSURL *)url absoluteString], @"http://webkit.org/b/%E4%BD%A0%E5%A5%BD;?x=8%20+%206");
>-            done = true;
>-        }];
>-        return session.items;
>-    }];
>-    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>-
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover": @{
>-            @"text/uri-list": @"",
>-        },
>-        @"drop": @{
>-            @"text/uri-list": @"http://webkit.org/b/\u4F60\u597D;?x=8 + 6",
>-        }
>-    });
>-    TestWebKitAPI::Util::run(&done);
>-}
>-
>-TEST(DataInteractionTests, DataTransferSetDataInvalidURL)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>-    [webView stringByEvaluatingJavaScript:@"customData = { 'url' : 'some random string' }"];
>-    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>-
>-    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>-    NSArray *registeredTypes = [simulator.get().sourceItemProviders.firstObject registeredTypeIdentifiers];
>-    EXPECT_FALSE([registeredTypes containsObject:(NSString *)kUTTypeURL]);
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover": @{
>-            @"text/uri-list": @"",
>-        },
>-        @"drop": @{
>-            @"text/uri-list": @"some random string",
>-        }
>-    });
>-}
>-
>-TEST(DataInteractionTests, DataTransferSanitizeHTML)
>-{
>-    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>-    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>-    auto simulator = adoptNS([[DataInteractionSimulator alloc] initWithWebView:webView.get()]);
>-
>-    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>-    [webView stringByEvaluatingJavaScript:@"customData = { 'text/html' : '<meta content=\"secret\">"
>-        "<b onmouseover=\"dangerousCode()\">hello</b>, world<script>dangerousCode()</script>' }"];
>-    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>-
>-    __block bool done = false;
>-    [simulator.get() setOverridePerformDropBlock:^NSArray<UIDragItem *> *(id <UIDropSession> session)
>-    {
>-        EXPECT_EQ(1UL, session.items.count);
>-        auto *item = session.items[0].itemProvider;
>-        EXPECT_TRUE([item.registeredTypeIdentifiers containsObject:(NSString *)kUTTypeHTML]);
>-        [item loadDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML completionHandler:^(NSData *data, NSError *error) {
>-            NSString *markup = [[[NSString alloc] initWithData:(NSData *)data encoding:NSUTF8StringEncoding] autorelease];
>-            EXPECT_TRUE([markup containsString:@"hello"]);
>-            EXPECT_TRUE([markup containsString:@", world"]);
>-            EXPECT_FALSE([markup containsString:@"secret"]);
>-            EXPECT_FALSE([markup containsString:@"dangerousCode"]);
>-            done = true;
>-        }];
>-        return session.items;
>-    }];
>-    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>-
>-    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>-        @"dragover": @{
>-            @"text/html": @"",
>-        },
>-        @"drop": @{
>-            @"text/html": @"<meta content=\"secret\"><b onmouseover=\"dangerousCode()\">hello</b>, world<script>dangerousCode()</script>",
>-        }
>-    });
>-    TestWebKitAPI::Util::run(&done);
>-}
>-
>-#endif // __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>-
>-} // namespace TestWebKitAPI
>-
>-#endif // ENABLE(DATA_INTERACTION)
>diff --git a/Tools/TestWebKitAPI/Tests/ios/DragAndDropTestsIOS.mm b/Tools/TestWebKitAPI/Tests/ios/DragAndDropTestsIOS.mm
>new file mode 100644
>index 0000000000000000000000000000000000000000..16e1f31b7f214185ca6b824197a18096e2801096
>--- /dev/null
>+++ b/Tools/TestWebKitAPI/Tests/ios/DragAndDropTestsIOS.mm
>@@ -0,0 +1,1911 @@
>+/*
>+ * Copyright (C) 2017 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#include "config.h"
>+
>+#if ENABLE(DRAG_SUPPORT) && PLATFORM(IOS)
>+
>+#import "DraggingSimulator.h"
>+#import "PlatformUtilities.h"
>+#import "TestWKWebView.h"
>+#import "UIKitSPI.h"
>+#import "WKWebViewConfigurationExtras.h"
>+#import <MobileCoreServices/MobileCoreServices.h>
>+#import <UIKit/NSItemProvider+UIKitAdditions.h>
>+#import <WebKit/WKPreferencesPrivate.h>
>+#import <WebKit/WKPreferencesRefPrivate.h>
>+#import <WebKit/WKProcessPoolPrivate.h>
>+#import <WebKit/WKWebViewConfigurationPrivate.h>
>+#import <WebKit/WebItemProviderPasteboard.h>
>+#import <WebKit/_WKProcessPoolConfiguration.h>
>+#import <wtf/Seconds.h>
>+
>+typedef void (^FileLoadCompletionBlock)(NSURL *, BOOL, NSError *);
>+typedef void (^DataLoadCompletionBlock)(NSData *, NSError *);
>+typedef void (^UIItemProviderDataLoadCompletionBlock)(NSData *, NSError *);
>+
>+#if !USE(APPLE_INTERNAL_SDK)
>+
>+@interface UIItemProviderRepresentationOptions : NSObject
>+@end
>+
>+#endif
>+
>+@interface UIItemProvider()
>++ (UIItemProvider *)itemProviderWithURL:(NSURL *)url title:(NSString *)title;
>+- (void) registerDataRepresentationForTypeIdentifier:(NSString *)typeIdentifier options:(UIItemProviderRepresentationOptions*)options loadHandler:(NSProgress * (^)(void (^UIItemProviderDataLoadCompletionBlock)(NSData *item, NSError *error))) loadHandler;
>+@end
>+
>+static NSString *InjectedBundlePasteboardDataType = @"org.webkit.data";
>+
>+static UIImage *testIconImage()
>+{
>+    return [UIImage imageNamed:@"TestWebKitAPI.resources/icon.png"];
>+}
>+
>+static NSData *testZIPArchive()
>+{
>+    NSURL *zipFileURL = [[NSBundle mainBundle] URLForResource:@"compressed-files" withExtension:@"zip" subdirectory:@"TestWebKitAPI.resources"];
>+    return [NSData dataWithContentsOfURL:zipFileURL];
>+}
>+
>+@implementation UIItemProvider (DragAndDropTests)
>+
>+- (void)registerDataRepresentationForTypeIdentifier:(NSString *)typeIdentifier withData:(NSData *)data
>+{
>+    RetainPtr<NSData> retainedData = data;
>+    [self registerDataRepresentationForTypeIdentifier:typeIdentifier visibility:UIItemProviderRepresentationOptionsVisibilityAll loadHandler: [retainedData] (DataLoadCompletionBlock block) -> NSProgress * {
>+        block(retainedData.get(), nil);
>+        return [NSProgress discreteProgressWithTotalUnitCount:100];
>+    }];
>+}
>+
>+@end
>+
>+@implementation TestWKWebView (DragAndDropTests)
>+
>+- (BOOL)editorContainsImageElement
>+{
>+    return [self stringByEvaluatingJavaScript:@"!!editor.querySelector('img')"].boolValue;
>+}
>+
>+- (NSString *)editorValue
>+{
>+    return [self stringByEvaluatingJavaScript:@"editor.value"];
>+}
>+
>+@end
>+
>+static NSValue *makeCGRectValue(CGFloat x, CGFloat y, CGFloat width, CGFloat height)
>+{
>+    return [NSValue valueWithCGRect:CGRectMake(x, y, width, height)];
>+}
>+
>+static void checkCGRectIsEqualToCGRectWithLogging(CGRect expected, CGRect observed)
>+{
>+    BOOL isEqual = CGRectEqualToRect(expected, observed);
>+    EXPECT_TRUE(isEqual);
>+    if (!isEqual)
>+        NSLog(@"Expected: %@ but observed: %@", NSStringFromCGRect(expected), NSStringFromCGRect(observed));
>+}
>+
>+static void checkSelectionRectsWithLogging(NSArray *expected, NSArray *observed)
>+{
>+    if (![expected isEqualToArray:observed])
>+        NSLog(@"Expected selection rects: %@ but observed: %@", expected, observed);
>+    EXPECT_TRUE([expected isEqualToArray:observed]);
>+}
>+
>+static void checkRichTextTypePrecedesPlainTextType(DraggingSimulator *simulator)
>+{
>+    // At least one of "com.apple.flat-rtfd" or "public.rtf" is expected to have higher precedence than "public.utf8-plain-text".
>+    NSArray *registeredTypes = [simulator.sourceItemProviders.firstObject registeredTypeIdentifiers];
>+    auto indexOfRTFType = [registeredTypes indexOfObject:(NSString *)kUTTypeRTF];
>+    auto indexOfFlatRTFDType = [registeredTypes indexOfObject:(NSString *)kUTTypeFlatRTFD];
>+    auto indexOfPlainTextType = [registeredTypes indexOfObject:(NSString *)kUTTypeUTF8PlainText];
>+    EXPECT_NE((NSInteger)indexOfPlainTextType, NSNotFound);
>+    EXPECT_TRUE((indexOfRTFType != NSNotFound && indexOfRTFType < indexOfPlainTextType) || (indexOfFlatRTFDType != NSNotFound && indexOfFlatRTFDType < indexOfPlainTextType));
>+}
>+
>+static void checkFirstTypeIsPresentAndSecondTypeIsMissing(DraggingSimulator *simulator, CFStringRef firstType, CFStringRef secondType)
>+{
>+    NSArray *registeredTypes = [simulator.sourceItemProviders.firstObject registeredTypeIdentifiers];
>+    EXPECT_TRUE([registeredTypes containsObject:(NSString *)firstType]);
>+    EXPECT_FALSE([registeredTypes containsObject:(NSString *)secondType]);
>+}
>+
>+static void checkTypeIdentifierIsRegisteredAtIndex(DraggingSimulator *simulator, NSString *type, NSUInteger index)
>+{
>+    NSArray *registeredTypes = [simulator.sourceItemProviders.firstObject registeredTypeIdentifiers];
>+    EXPECT_GT(registeredTypes.count, index);
>+    EXPECT_WK_STREQ(type.UTF8String, [registeredTypes[index] UTF8String]);
>+}
>+
>+static void checkEstimatedSize(DraggingSimulator *simulator, CGSize estimatedSize)
>+{
>+    UIItemProvider *sourceItemProvider = [simulator sourceItemProviders].firstObject;
>+    EXPECT_EQ(estimatedSize.width, sourceItemProvider.preferredPresentationSize.width);
>+    EXPECT_EQ(estimatedSize.height, sourceItemProvider.preferredPresentationSize.height);
>+}
>+
>+static void checkSuggestedNameAndEstimatedSize(DraggingSimulator *simulator, NSString *suggestedName, CGSize estimatedSize)
>+{
>+    UIItemProvider *sourceItemProvider = [simulator sourceItemProviders].firstObject;
>+    EXPECT_WK_STREQ(suggestedName.UTF8String, sourceItemProvider.suggestedName.UTF8String);
>+    EXPECT_EQ(estimatedSize.width, sourceItemProvider.preferredPresentationSize.width);
>+    EXPECT_EQ(estimatedSize.height, sourceItemProvider.preferredPresentationSize.height);
>+}
>+
>+static void checkStringArraysAreEqual(NSArray<NSString *> *expected, NSArray<NSString *> *observed)
>+{
>+    EXPECT_EQ(expected.count, observed.count);
>+    for (NSUInteger index = 0; index < expected.count; ++index) {
>+        NSString *expectedString = [expected objectAtIndex:index];
>+        NSString *observedString = [observed objectAtIndex:index];
>+        EXPECT_WK_STREQ(expectedString, observedString);
>+        if (![expectedString isEqualToString:observedString])
>+            NSLog(@"Expected observed string: %@ to match expected string: %@ at index: %tu", observedString, expectedString, index);
>+    }
>+}
>+
>+static void checkDragCaretRectIsContainedInRect(CGRect caretRect, CGRect containerRect)
>+{
>+    BOOL contained = CGRectContainsRect(containerRect, caretRect);
>+    EXPECT_TRUE(contained);
>+    if (!contained)
>+        NSLog(@"Expected caret rect: %@ to fit within container rect: %@", NSStringFromCGRect(caretRect), NSStringFromCGRect(containerRect));
>+}
>+
>+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>+
>+static void checkJSONWithLogging(NSString *jsonString, NSDictionary *expected)
>+{
>+    BOOL success = TestWebKitAPI::Util::jsonMatchesExpectedValues(jsonString, expected);
>+    EXPECT_TRUE(success);
>+    if (!success)
>+        NSLog(@"Expected JSON: %@ to match values: %@", jsonString, expected);
>+}
>+
>+static NSData *testIconImageData()
>+{
>+    return [NSData dataWithContentsOfURL:[[NSBundle mainBundle] URLForResource:@"icon" withExtension:@"png" subdirectory:@"TestWebKitAPI.resources"]];
>+}
>+
>+static void runTestWithTemporaryTextFile(void(^runTest)(NSURL *fileURL))
>+{
>+    NSString *fileName = [NSString stringWithFormat:@"drag-drop-text-file-%@.txt", [NSUUID UUID].UUIDString];
>+    RetainPtr<NSURL> temporaryFile = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent:fileName] isDirectory:NO];
>+    [[NSFileManager defaultManager] removeItemAtURL:temporaryFile.get() error:nil];
>+
>+    NSError *error = nil;
>+    [@"This is a tiny blob of text." writeToURL:temporaryFile.get() atomically:YES encoding:NSUTF8StringEncoding error:&error];
>+
>+    if (error)
>+        NSLog(@"Error writing temporary file: %@", error);
>+
>+    @try {
>+        runTest(temporaryFile.get());
>+    } @finally {
>+        [[NSFileManager defaultManager] removeItemAtURL:temporaryFile.get() error:nil];
>+    }
>+}
>+
>+static void runTestWithTemporaryFolder(void(^runTest)(NSURL *folderURL))
>+{
>+    NSString *folderName = [NSString stringWithFormat:@"some.directory-%@", [NSUUID UUID].UUIDString];
>+    RetainPtr<NSURL> temporaryFolder = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent:folderName] isDirectory:YES];
>+    [[NSFileManager defaultManager] removeItemAtURL:temporaryFolder.get() error:nil];
>+
>+    NSError *error = nil;
>+    NSFileManager *defaultManager = [NSFileManager defaultManager];
>+    [defaultManager createDirectoryAtURL:temporaryFolder.get() withIntermediateDirectories:NO attributes:nil error:&error];
>+    [testIconImageData() writeToURL:[temporaryFolder.get() URLByAppendingPathComponent:@"icon.png" isDirectory:NO] atomically:YES];
>+    [testZIPArchive() writeToURL:[temporaryFolder.get() URLByAppendingPathComponent:@"archive.zip" isDirectory:NO] atomically:YES];
>+
>+    NSURL *firstSubdirectory = [temporaryFolder.get() URLByAppendingPathComponent:@"subdirectory1" isDirectory:YES];
>+    [defaultManager createDirectoryAtURL:firstSubdirectory withIntermediateDirectories:NO attributes:nil error:&error];
>+    [@"I am a text file in the first subdirectory." writeToURL:[firstSubdirectory URLByAppendingPathComponent:@"text-file-1.txt" isDirectory:NO] atomically:YES encoding:NSUTF8StringEncoding error:&error];
>+
>+    NSURL *secondSubdirectory = [temporaryFolder.get() URLByAppendingPathComponent:@"subdirectory2" isDirectory:YES];
>+    [defaultManager createDirectoryAtURL:secondSubdirectory withIntermediateDirectories:NO attributes:nil error:&error];
>+    [@"I am a text file in the second subdirectory." writeToURL:[secondSubdirectory URLByAppendingPathComponent:@"text-file-2.txt" isDirectory:NO] atomically:YES encoding:NSUTF8StringEncoding error:&error];
>+
>+    if (error)
>+        NSLog(@"Error writing temporary file: %@", error);
>+
>+    @try {
>+        runTest(temporaryFolder.get());
>+    } @finally {
>+        [[NSFileManager defaultManager] removeItemAtURL:temporaryFolder.get() error:nil];
>+    }
>+}
>+
>+#endif // __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>+
>+namespace TestWebKitAPI {
>+
>+TEST(DragAndDropTests, ImageToContentEditable)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"image-and-contenteditable"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_TRUE([webView editorContainsImageElement]);
>+
>+    NSArray *observedEventNames = [simulator observedEventNames];
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragenter"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragover"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"drop"]);
>+    checkSelectionRectsWithLogging(@[ makeCGRectValue(1, 201, 215, 174) ], [simulator finalSelectionRects]);
>+    checkFirstTypeIsPresentAndSecondTypeIsMissing(simulator.get(), kUTTypePNG, kUTTypeFileURL);
>+    checkEstimatedSize(simulator.get(), { 215, 174 });
>+}
>+
>+TEST(DragAndDropTests, CanStartDragOnEnormousImage)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadHTMLString:@"<img src='enormous.svg'></img>"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 100) to:CGPointMake(100, 100)];
>+
>+    NSArray *registeredTypes = [[simulator sourceItemProviders].firstObject registeredTypeIdentifiers];
>+    EXPECT_WK_STREQ((NSString *)kUTTypeScalableVectorGraphics, [registeredTypes firstObject]);
>+}
>+
>+TEST(DragAndDropTests, ImageToTextarea)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"image-and-textarea"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("", [webView editorValue]);
>+
>+    NSArray *observedEventNames = [simulator observedEventNames];
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragenter"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragover"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"drop"]);
>+    checkFirstTypeIsPresentAndSecondTypeIsMissing(simulator.get(), kUTTypePNG, kUTTypeFileURL);
>+    checkEstimatedSize(simulator.get(), { 215, 174 });
>+}
>+
>+TEST(DragAndDropTests, ImageInLinkToInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"image-in-link-and-input"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("https://www.apple.com/", [webView editorValue].UTF8String);
>+    checkSelectionRectsWithLogging(@[ makeCGRectValue(101, 241, 2057, 232) ], [simulator finalSelectionRects]);
>+    checkSuggestedNameAndEstimatedSize(simulator.get(), @"icon.png", { 215, 174 });
>+    checkTypeIdentifierIsRegisteredAtIndex(simulator.get(), (NSString *)kUTTypePNG, 0);
>+}
>+
>+TEST(DragAndDropTests, ImageInLinkWithoutHREFToInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"image-in-link-and-input"];
>+    [webView stringByEvaluatingJavaScript:@"link.href = ''"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("", [webView editorValue]);
>+    checkEstimatedSize(simulator.get(), { 215, 174 });
>+    checkTypeIdentifierIsRegisteredAtIndex(simulator.get(), (NSString *)kUTTypePNG, 0);
>+}
>+
>+TEST(DragAndDropTests, ImageDoesNotUseElementSizeAsEstimatedSize)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"gif-and-file-input"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom: { 100, 100 } to: { 100, 300 }];
>+
>+    checkTypeIdentifierIsRegisteredAtIndex(simulator.get(), (NSString *)kUTTypeGIF, 0);
>+    checkSuggestedNameAndEstimatedSize(simulator.get(), @"apple.gif", { 52, 64 });
>+    EXPECT_WK_STREQ("apple.gif (image/gif)", [webView stringByEvaluatingJavaScript:@"output.textContent"]);
>+}
>+
>+TEST(DragAndDropTests, ContentEditableToContentEditable)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView loadTestPageNamed:@"autofocus-contenteditable"];
>+    [simulator waitForInputSession];
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_EQ([webView stringByEvaluatingJavaScript:@"source.textContent"].length, 0UL);
>+    EXPECT_WK_STREQ("Hello world", [webView stringByEvaluatingJavaScript:@"editor.textContent"].UTF8String);
>+
>+    NSArray *observedEventNames = [simulator observedEventNames];
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragenter"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragover"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"drop"]);
>+    checkSelectionRectsWithLogging(@[ makeCGRectValue(1, 201, 961, 227) ], [simulator finalSelectionRects]);
>+    checkRichTextTypePrecedesPlainTextType(simulator.get());
>+}
>+
>+TEST(DragAndDropTests, ContentEditableToTextarea)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView loadTestPageNamed:@"contenteditable-and-textarea"];
>+    [simulator waitForInputSession];
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_EQ([webView stringByEvaluatingJavaScript:@"source.textContent"].length, 0UL);
>+    EXPECT_WK_STREQ("Hello world", [webView editorValue].UTF8String);
>+
>+    NSArray *observedEventNames = [simulator observedEventNames];
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragenter"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragover"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"drop"]);
>+    checkSelectionRectsWithLogging(@[ makeCGRectValue(6, 203, 990, 232) ], [simulator finalSelectionRects]);
>+    checkRichTextTypePrecedesPlainTextType(simulator.get());
>+}
>+
>+TEST(DragAndDropTests, ContentEditableMoveParagraphs)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView loadTestPageNamed:@"two-paragraph-contenteditable"];
>+    [simulator waitForInputSession];
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(250, 450)];
>+
>+    NSString *finalTextContent = [webView stringByEvaluatingJavaScript:@"editor.textContent"];
>+    NSUInteger firstParagraphOffset = [finalTextContent rangeOfString:@"This is the first paragraph"].location;
>+    NSUInteger secondParagraphOffset = [finalTextContent rangeOfString:@"This is the second paragraph"].location;
>+
>+    EXPECT_FALSE(firstParagraphOffset == NSNotFound);
>+    EXPECT_FALSE(secondParagraphOffset == NSNotFound);
>+    EXPECT_GT(firstParagraphOffset, secondParagraphOffset);
>+    checkSelectionRectsWithLogging(@[ makeCGRectValue(190, 100, 130, 20), makeCGRectValue(0, 120, 320, 100), makeCGRectValue(0, 220, 252, 20) ], [simulator finalSelectionRects]);
>+}
>+
>+TEST(DragAndDropTests, DragImageFromContentEditable)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView synchronouslyLoadTestPageNamed:@"contenteditable-and-target"];
>+    [simulator runFrom:CGPointMake(100, 100) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target.textContent"]);
>+}
>+
>+TEST(DragAndDropTests, TextAreaToInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView loadTestPageNamed:@"textarea-to-input"];
>+    [simulator waitForInputSession];
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_EQ([webView stringByEvaluatingJavaScript:@"source.value"].length, 0UL);
>+    EXPECT_WK_STREQ("Hello world", [webView editorValue].UTF8String);
>+    checkSelectionRectsWithLogging(@[ makeCGRectValue(101, 241, 990, 232) ], [simulator finalSelectionRects]);
>+}
>+
>+TEST(DragAndDropTests, SinglePlainTextWordTypeIdentifiers)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView loadTestPageNamed:@"textarea-to-input"];
>+    [simulator waitForInputSession];
>+    [webView stringByEvaluatingJavaScript:@"source.value = 'pneumonoultramicroscopicsilicovolcanoconiosis'"];
>+    [webView stringByEvaluatingJavaScript:@"source.selectionStart = 0"];
>+    [webView stringByEvaluatingJavaScript:@"source.selectionEnd = source.value.length"];
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    NSItemProvider *itemProvider = [simulator sourceItemProviders].firstObject;
>+    NSArray *registeredTypes = [itemProvider registeredTypeIdentifiers];
>+    EXPECT_EQ(1UL, registeredTypes.count);
>+    EXPECT_WK_STREQ([(NSString *)kUTTypeUTF8PlainText UTF8String], [registeredTypes.firstObject UTF8String]);
>+    EXPECT_EQ([webView stringByEvaluatingJavaScript:@"source.value"].length, 0UL);
>+    EXPECT_EQ(UIPreferredPresentationStyleInline, itemProvider.preferredPresentationStyle);
>+    EXPECT_WK_STREQ("pneumonoultramicroscopicsilicovolcanoconiosis", [webView editorValue].UTF8String);
>+}
>+
>+TEST(DragAndDropTests, SinglePlainTextURLTypeIdentifiers)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView loadTestPageNamed:@"textarea-to-input"];
>+    [simulator waitForInputSession];
>+    [webView stringByEvaluatingJavaScript:@"source.value = 'https://webkit.org/'"];
>+    [webView stringByEvaluatingJavaScript:@"source.selectionStart = 0"];
>+    [webView stringByEvaluatingJavaScript:@"source.selectionEnd = source.value.length"];
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    NSItemProvider *itemProvider = [simulator sourceItemProviders].firstObject;
>+    NSArray *registeredTypes = [itemProvider registeredTypeIdentifiers];
>+    EXPECT_EQ(2UL, registeredTypes.count);
>+    EXPECT_WK_STREQ([(NSString *)kUTTypeURL UTF8String], [registeredTypes.firstObject UTF8String]);
>+    EXPECT_WK_STREQ([(NSString *)kUTTypeUTF8PlainText UTF8String], [registeredTypes.lastObject UTF8String]);
>+    EXPECT_EQ(0UL, [webView stringByEvaluatingJavaScript:@"source.value"].length);
>+    EXPECT_EQ(UIPreferredPresentationStyleInline, itemProvider.preferredPresentationStyle);
>+    EXPECT_WK_STREQ("https://webkit.org/", [webView editorValue].UTF8String);
>+}
>+
>+TEST(DragAndDropTests, LinkToInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"link-and-input"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("https://www.apple.com/", [webView editorValue].UTF8String);
>+
>+    __block bool doneLoadingURL = false;
>+    UIItemProvider *sourceItemProvider = [simulator sourceItemProviders].firstObject;
>+    [sourceItemProvider loadObjectOfClass:[NSURL class] completionHandler:^(id object, NSError *error) {
>+        NSURL *url = object;
>+        EXPECT_WK_STREQ("Hello world", url._title.UTF8String ?: "");
>+        doneLoadingURL = true;
>+    }];
>+    TestWebKitAPI::Util::run(&doneLoadingURL);
>+
>+    NSArray *observedEventNames = [simulator observedEventNames];
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragenter"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragover"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"drop"]);
>+    checkSelectionRectsWithLogging(@[ makeCGRectValue(101, 273, 2057, 232) ], [simulator finalSelectionRects]);
>+    checkTypeIdentifierIsRegisteredAtIndex(simulator.get(), (NSString *)kUTTypeURL, 0);
>+}
>+
>+TEST(DragAndDropTests, BackgroundImageLinkToInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"background-image-link-and-input"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("https://www.apple.com/", [webView editorValue].UTF8String);
>+
>+    NSArray *observedEventNames = [simulator observedEventNames];
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragenter"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragover"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"drop"]);
>+    checkSelectionRectsWithLogging(@[ makeCGRectValue(101, 241, 2057, 232) ], [simulator finalSelectionRects]);
>+    checkTypeIdentifierIsRegisteredAtIndex(simulator.get(), (NSString *)kUTTypeURL, 0);
>+}
>+
>+TEST(DragAndDropTests, CanPreventStart)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"prevent-start"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_EQ(DragAndDropPhaseCancelled, [simulator phase]);
>+    EXPECT_FALSE([webView editorContainsImageElement]);
>+
>+    NSArray *observedEventNames = [simulator observedEventNames];
>+    EXPECT_FALSE([observedEventNames containsObject:@"dragenter"]);
>+    EXPECT_FALSE([observedEventNames containsObject:@"dragover"]);
>+    checkSelectionRectsWithLogging(@[ ], [simulator finalSelectionRects]);
>+}
>+
>+TEST(DragAndDropTests, CanPreventOperation)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"prevent-operation"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_FALSE([webView editorContainsImageElement]);
>+
>+    NSArray *observedEventNames = [simulator observedEventNames];
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragenter"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragover"]);
>+    checkSelectionRectsWithLogging(@[ ], [simulator finalSelectionRects]);
>+}
>+
>+TEST(DragAndDropTests, EnterAndLeaveEvents)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"link-and-input"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 450)];
>+
>+    EXPECT_WK_STREQ("", [webView editorValue].UTF8String);
>+
>+    NSArray *observedEventNames = [simulator observedEventNames];
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragenter"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragover"]);
>+    EXPECT_TRUE([observedEventNames containsObject:@"dragleave"]);
>+    EXPECT_FALSE([observedEventNames containsObject:@"drop"]);
>+    checkSelectionRectsWithLogging(@[ ], [simulator finalSelectionRects]);
>+}
>+
>+TEST(DragAndDropTests, CanStartDragOnDivWithDraggableAttribute)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"custom-draggable-div"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 100) to:CGPointMake(100, 250)];
>+
>+    EXPECT_GT([simulator sourceItemProviders].count, 0UL);
>+    NSItemProvider *itemProvider = [simulator sourceItemProviders].firstObject;
>+    EXPECT_EQ(UIPreferredPresentationStyleInline, itemProvider.preferredPresentationStyle);
>+    EXPECT_TRUE([webView stringByEvaluatingJavaScript:@"!!destination.querySelector('#item')"]);
>+    EXPECT_WK_STREQ(@"PASS", [webView stringByEvaluatingJavaScript:@"item.textContent"]);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourcePlainTextToIFrame)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"contenteditable-in-iframe"];
>+
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [itemProvider registerObject:@"Hello world" visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(0, 0) to:CGPointMake(160, 250)];
>+
>+    auto containerLeft = [webView stringByEvaluatingJavaScript:@"container.getBoundingClientRect().left"].floatValue;
>+    auto containerTop = [webView stringByEvaluatingJavaScript:@"container.getBoundingClientRect().top"].floatValue;
>+    auto containerWidth = [webView stringByEvaluatingJavaScript:@"container.getBoundingClientRect().width"].floatValue;
>+    auto containerHeight = [webView stringByEvaluatingJavaScript:@"container.getBoundingClientRect().height"].floatValue;
>+    checkDragCaretRectIsContainedInRect([simulator lastKnownDragCaretRect], CGRectMake(containerLeft, containerTop, containerWidth, containerHeight));
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceInlineTextToFileInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+
>+    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [simulatedItemProvider setPreferredPresentationStyle:UIPreferredPresentationStyleInline];
>+    [simulatedItemProvider registerObject:@"This item provider requested inline presentation style." visibility:NSItemProviderRepresentationVisibilityAll];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>+
>+    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"output.value"]);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceJSONToFileInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+
>+    auto simulatedJSONItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *jsonData = [@"{ \"foo\": \"bar\",  \"bar\": \"baz\" }" dataUsingEncoding:NSUTF8StringEncoding];
>+    [simulatedJSONItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJSON withData:jsonData];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ simulatedJSONItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>+
>+    EXPECT_WK_STREQ("application/json", [webView stringByEvaluatingJavaScript:@"output.value"]);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceImageToFileInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+
>+    auto simulatedImageItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *imageData = UIImageJPEGRepresentation(testIconImage(), 0.5);
>+    [simulatedImageItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG withData:imageData];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ simulatedImageItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>+
>+    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>+    EXPECT_WK_STREQ("image/jpeg", outputValue.UTF8String);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceHTMLToUploadArea)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+
>+    auto simulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *htmlData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>+    [simulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:htmlData];
>+    [simulatedHTMLItemProvider setSuggestedName:@"index.html"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setShouldAllowMoveOperation:NO];
>+    [simulator setExternalItemProviders:@[ simulatedHTMLItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 300) to:CGPointMake(100, 300)];
>+
>+    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>+    EXPECT_WK_STREQ("text/html", outputValue.UTF8String);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceMoveOperationNotAllowed)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+    [webView stringByEvaluatingJavaScript:@"upload.dropEffect = 'move'"];
>+
>+    auto simulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *htmlData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>+    [simulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:htmlData];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setShouldAllowMoveOperation:NO];
>+    [simulator setExternalItemProviders:@[ simulatedHTMLItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 300) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"output.value"]);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceZIPArchiveAndURLToSingleFileInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+
>+    auto archiveProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [archiveProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeZipArchive withData:testZIPArchive()];
>+
>+    auto urlProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [urlProvider registerObject:[NSURL URLWithString:@"https://webkit.org"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ archiveProvider.get(), urlProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>+
>+    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>+    EXPECT_WK_STREQ("application/zip", outputValue.UTF8String);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceZIPArchiveToUploadArea)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeZipArchive withData:testZIPArchive()];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 300) to:CGPointMake(100, 300)];
>+
>+    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>+    EXPECT_WK_STREQ("application/zip", outputValue.UTF8String);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceImageAndHTMLToSingleFileInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+
>+    auto simulatedImageItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *imageData = UIImageJPEGRepresentation(testIconImage(), 0.5);
>+    [simulatedImageItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG withData:imageData];
>+
>+    auto simulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *htmlData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>+    [simulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:htmlData];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ simulatedHTMLItemProvider.get(), simulatedImageItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>+
>+    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>+    EXPECT_WK_STREQ("", outputValue.UTF8String);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceImageAndHTMLToMultipleFileInput)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+    [webView stringByEvaluatingJavaScript:@"input.setAttribute('multiple', '')"];
>+
>+    auto simulatedImageItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *imageData = UIImageJPEGRepresentation(testIconImage(), 0.5);
>+    [simulatedImageItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG withData:imageData];
>+
>+    auto simulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *htmlData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>+    [simulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:htmlData];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ simulatedHTMLItemProvider.get(), simulatedImageItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 100) to:CGPointMake(100, 100)];
>+
>+    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>+    EXPECT_WK_STREQ("image/jpeg, text/html", outputValue.UTF8String);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceImageAndHTMLToUploadArea)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+
>+    auto simulatedImageItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *imageData = UIImageJPEGRepresentation(testIconImage(), 0.5);
>+    [simulatedImageItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG withData:imageData];
>+
>+    auto firstSimulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *firstHTMLData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>+    [firstSimulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:firstHTMLData];
>+
>+    auto secondSimulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *secondHTMLData = [@"<html><body>hello world</body></html>" dataUsingEncoding:NSUTF8StringEncoding];
>+    [secondSimulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:secondHTMLData];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setShouldAllowMoveOperation:NO];
>+    [simulator setExternalItemProviders:@[ simulatedImageItemProvider.get(), firstSimulatedHTMLItemProvider.get(), secondSimulatedHTMLItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 300) to:CGPointMake(100, 300)];
>+
>+    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>+    EXPECT_WK_STREQ("image/jpeg, text/html, text/html", outputValue.UTF8String);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceHTMLToContentEditable)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *htmlData = [@"<h1>This is a test</h1>" dataUsingEncoding:NSUTF8StringEncoding];
>+    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:htmlData];
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+
>+    NSString *textContent = [webView stringByEvaluatingJavaScript:@"editor.textContent"];
>+    EXPECT_WK_STREQ("This is a test", textContent.UTF8String);
>+    EXPECT_TRUE([webView stringByEvaluatingJavaScript:@"!!editor.querySelector('h1')"].boolValue);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceBoldSystemAttributedStringToContentEditable)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    NSDictionary *textAttributes = @{ NSFontAttributeName: [UIFont boldSystemFontOfSize:20] };
>+    NSAttributedString *richText = [[NSAttributedString alloc] initWithString:@"This is a test" attributes:textAttributes];
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] initWithObject:richText]);
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("This is a test", [webView stringByEvaluatingJavaScript:@"editor.textContent"].UTF8String);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceColoredAttributedStringToContentEditable)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    NSDictionary *textAttributes = @{ NSForegroundColorAttributeName: [UIColor redColor] };
>+    NSAttributedString *richText = [[NSAttributedString alloc] initWithString:@"This is a test" attributes:textAttributes];
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] initWithObject:richText]);
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("rgb(255, 0, 0)", [webView stringByEvaluatingJavaScript:@"getComputedStyle(document.querySelector('p')).color"]);
>+    EXPECT_WK_STREQ("This is a test", [webView stringByEvaluatingJavaScript:@"editor.textContent"].UTF8String);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceMultipleURLsToContentEditable)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    auto firstItem = adoptNS([[UIItemProvider alloc] init]);
>+    [firstItem registerObject:[NSURL URLWithString:@"https://www.apple.com/iphone/"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    auto secondItem = adoptNS([[UIItemProvider alloc] init]);
>+    [secondItem registerObject:[NSURL URLWithString:@"https://www.apple.com/mac/"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    auto thirdItem = adoptNS([[UIItemProvider alloc] init]);
>+    [thirdItem registerObject:[NSURL URLWithString:@"https://webkit.org/"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    [simulator setExternalItemProviders:@[ firstItem.get(), secondItem.get(), thirdItem.get() ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+
>+    NSArray *droppedURLs = [webView objectByEvaluatingJavaScript:@"Array.from(editor.querySelectorAll('a')).map(a => a.href)"];
>+    EXPECT_EQ(3UL, droppedURLs.count);
>+    EXPECT_WK_STREQ("https://www.apple.com/iphone/", droppedURLs[0]);
>+    EXPECT_WK_STREQ("https://www.apple.com/mac/", droppedURLs[1]);
>+    EXPECT_WK_STREQ("https://webkit.org/", droppedURLs[2]);
>+
>+    NSArray *linksSeparatedByLine = [[webView objectByEvaluatingJavaScript:@"editor.innerText"] componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];
>+    EXPECT_EQ(3UL, linksSeparatedByLine.count);
>+    EXPECT_WK_STREQ("https://www.apple.com/iphone/", linksSeparatedByLine[0]);
>+    EXPECT_WK_STREQ("https://www.apple.com/mac/", linksSeparatedByLine[1]);
>+    EXPECT_WK_STREQ("https://webkit.org/", linksSeparatedByLine[2]);
>+}
>+
>+TEST(DragAndDropTests, RespectsExternalSourceFidelityRankings)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    // Here, our source item provider vends two representations: plain text, and then an image. If we don't respect the
>+    // fidelity order requested by the source, we'll end up assuming that the image is a higher fidelity representation
>+    // than the plain text, and erroneously insert the image. If we respect source fidelities, we'll insert text rather
>+    // than an image.
>+    auto simulatedItemProviderWithTextFirst = adoptNS([[UIItemProvider alloc] init]);
>+    [simulatedItemProviderWithTextFirst registerObject:@"Hello world" visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    [simulatedItemProviderWithTextFirst registerObject:testIconImage() visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    [simulator setExternalItemProviders:@[ simulatedItemProviderWithTextFirst.get() ]];
>+
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+    EXPECT_WK_STREQ("Hello world", [webView stringByEvaluatingJavaScript:@"editor.textContent"]);
>+    EXPECT_FALSE([webView editorContainsImageElement]);
>+    [webView stringByEvaluatingJavaScript:@"editor.innerHTML = ''"];
>+
>+    // Now we register the item providers in reverse, and expect the image to be inserted instead of text.
>+    auto simulatedItemProviderWithImageFirst = adoptNS([[UIItemProvider alloc] init]);
>+    [simulatedItemProviderWithImageFirst registerObject:testIconImage() visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    [simulatedItemProviderWithImageFirst registerObject:@"Hello world" visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    [simulator setExternalItemProviders:@[ simulatedItemProviderWithImageFirst.get() ]];
>+
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"editor.textContent"]);
>+    EXPECT_TRUE([webView editorContainsImageElement]);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceUTF8PlainTextOnly)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+
>+    NSString *textPayload = @"Ceci n'est pas une string";
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [simulatedItemProvider registerDataRepresentationForTypeIdentifier:(__bridge NSString *)kUTTypeUTF8PlainText options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>+    {
>+        completionBlock([textPayload dataUsingEncoding:NSUTF8StringEncoding], nil);
>+        return [NSProgress discreteProgressWithTotalUnitCount:100];
>+    }];
>+    [simulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+    EXPECT_WK_STREQ(textPayload.UTF8String, [webView stringByEvaluatingJavaScript:@"editor.textContent"].UTF8String);
>+    checkSelectionRectsWithLogging(@[ makeCGRectValue(1, 201, 1936, 227) ], [simulator finalSelectionRects]);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceJPEGOnly)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [simulatedItemProvider registerDataRepresentationForTypeIdentifier:(__bridge NSString *)kUTTypeJPEG options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>+    {
>+        completionBlock(UIImageJPEGRepresentation(testIconImage(), 0.5), nil);
>+        return [NSProgress discreteProgressWithTotalUnitCount:100];
>+    }];
>+    [simulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+    EXPECT_TRUE([webView editorContainsImageElement]);
>+    checkSelectionRectsWithLogging(@[ makeCGRectValue(1, 201, 215, 174) ], [simulator finalSelectionRects]);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceTitledNSURL)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>+
>+    NSURL *titledURL = [NSURL URLWithString:@"https://www.apple.com"];
>+    titledURL._title = @"Apple";
>+    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [simulatedItemProvider registerObject:titledURL visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("Apple", [webView stringByEvaluatingJavaScript:@"editor.querySelector('a').textContent"]);
>+    EXPECT_WK_STREQ("https://www.apple.com/", [webView stringByEvaluatingJavaScript:@"editor.querySelector('a').href"]);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceFileURL)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>+
>+    NSURL *URL = [NSURL URLWithString:@"file:///some/file/that/is/not/real"];
>+    UIItemProvider *simulatedItemProvider = [UIItemProvider itemProviderWithURL:URL title:@""];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ simulatedItemProvider ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+
>+    EXPECT_FALSE([[webView stringByEvaluatingJavaScript:@"!!editor.querySelector('a')"] boolValue]);
>+    EXPECT_WK_STREQ("Hello world\nfile:///some/file/that/is/not/real", [webView stringByEvaluatingJavaScript:@"document.body.innerText"]);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceOverrideDropFileUpload)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"file-uploading"];
>+
>+    auto simulatedImageItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *imageData = UIImageJPEGRepresentation(testIconImage(), 0.5);
>+    [simulatedImageItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG withData:imageData];
>+
>+    auto simulatedHTMLItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSData *firstHTMLData = [@"<body contenteditable></body>" dataUsingEncoding:NSUTF8StringEncoding];
>+    [simulatedHTMLItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:firstHTMLData];
>+    [simulatedHTMLItemProvider setPreferredPresentationStyle:UIPreferredPresentationStyleAttachment];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setOverridePerformDropBlock:^NSArray<UIDragItem *> *(id <UIDropSession> session)
>+    {
>+        EXPECT_EQ(2UL, session.items.count);
>+        UIDragItem *firstItem = session.items[0];
>+        UIDragItem *secondItem = session.items[1];
>+        EXPECT_TRUE([firstItem.itemProvider.registeredTypeIdentifiers isEqual:@[ (NSString *)kUTTypeJPEG ]]);
>+        EXPECT_TRUE([secondItem.itemProvider.registeredTypeIdentifiers isEqual:@[ (NSString *)kUTTypeHTML ]]);
>+        return @[ secondItem ];
>+    }];
>+    [simulator setExternalItemProviders:@[ simulatedImageItemProvider.get(), simulatedHTMLItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(200, 300) to:CGPointMake(100, 300)];
>+
>+    NSString *outputValue = [webView stringByEvaluatingJavaScript:@"output.value"];
>+    EXPECT_WK_STREQ("text/html", outputValue.UTF8String);
>+}
>+
>+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>+
>+static RetainPtr<TestWKWebView> setUpTestWebViewForDataTransferItems()
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"DataTransferItem-getAsEntry"];
>+
>+    auto preferences = (WKPreferencesRef)[[webView configuration] preferences];
>+    WKPreferencesSetDataTransferItemsEnabled(preferences, true);
>+    WKPreferencesSetDirectoryUploadEnabled(preferences, true);
>+
>+    return webView;
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceDataTransferItemGetFolderAsEntry)
>+{
>+    // The expected output is sorted by alphabetical order here for consistent behavior across different test environments.
>+    // See DataTransferItem-getAsEntry.html for more details.
>+    NSArray<NSString *> *expectedOutput = @[
>+        @"Found data transfer item (kind: 'file', type: '')",
>+        @"DIR: /somedirectory",
>+        @"DIR: /somedirectory/subdirectory1",
>+        @"DIR: /somedirectory/subdirectory2",
>+        [NSString stringWithFormat:@"FILE: /somedirectory/archive.zip ('application/zip', %tu bytes)", testZIPArchive().length],
>+        [NSString stringWithFormat:@"FILE: /somedirectory/icon.png ('image/png', %tu bytes)", testIconImageData().length],
>+        @"FILE: /somedirectory/subdirectory1/text-file-1.txt ('text/plain', 43 bytes)",
>+        @"FILE: /somedirectory/subdirectory2/text-file-2.txt ('text/plain', 44 bytes)"
>+    ];
>+
>+    auto webView = setUpTestWebViewForDataTransferItems();
>+    __block bool done = false;
>+    [webView performAfterReceivingMessage:@"dropped" action:^() {
>+        done = true;
>+    }];
>+
>+    runTestWithTemporaryFolder(^(NSURL *folderURL) {
>+        auto itemProvider = adoptNS([[NSItemProvider alloc] init]);
>+        [itemProvider setSuggestedName:@"somedirectory"];
>+        [itemProvider registerFileRepresentationForTypeIdentifier:(NSString *)kUTTypeFolder fileOptions:0 visibility:NSItemProviderRepresentationVisibilityAll loadHandler:[capturedFolderURL = retainPtr(folderURL)] (FileLoadCompletionBlock completionHandler) -> NSProgress * {
>+            completionHandler(capturedFolderURL.get(), NO, nil);
>+            return nil;
>+        }];
>+
>+        auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+        [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+        [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(150, 50)];
>+    });
>+
>+    TestWebKitAPI::Util::run(&done);
>+    EXPECT_WK_STREQ([expectedOutput componentsJoinedByString:@"\n"], [webView stringByEvaluatingJavaScript:@"output.value"]);
>+}
>+
>+TEST(DragAndDropTests, ExternalSourceDataTransferItemGetPlainTextFileAsEntry)
>+{
>+    NSArray<NSString *> *expectedOutput = @[
>+        @"Found data transfer item (kind: 'file', type: 'text/plain')",
>+        @"FILE: /foo.txt ('text/plain', 28 bytes)"
>+    ];
>+
>+    auto webView = setUpTestWebViewForDataTransferItems();
>+    __block bool done = false;
>+    [webView performAfterReceivingMessage:@"dropped" action:^() {
>+        done = true;
>+    }];
>+
>+    runTestWithTemporaryTextFile(^(NSURL *fileURL) {
>+        auto itemProvider = adoptNS([[NSItemProvider alloc] init]);
>+        [itemProvider setSuggestedName:@"foo"];
>+        [itemProvider registerFileRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText fileOptions:0 visibility:NSItemProviderRepresentationVisibilityAll loadHandler:[capturedFileURL = retainPtr(fileURL)](FileLoadCompletionBlock completionHandler) -> NSProgress * {
>+            completionHandler(capturedFileURL.get(), NO, nil);
>+            return nil;
>+        }];
>+
>+        auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+        [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+        [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(150, 50)];
>+    });
>+
>+    TestWebKitAPI::Util::run(&done);
>+    EXPECT_WK_STREQ([expectedOutput componentsJoinedByString:@"\n"], [webView stringByEvaluatingJavaScript:@"output.value"]);
>+}
>+
>+#endif // __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>+
>+TEST(DragAndDropTests, ExternalSourceOverrideDropInsertURL)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setOverridePerformDropBlock:^NSArray<UIDragItem *> *(id <UIDropSession> session)
>+    {
>+        NSMutableArray<UIDragItem *> *allowedItems = [NSMutableArray array];
>+        for (UIDragItem *item in session.items) {
>+            if ([item.itemProvider.registeredTypeIdentifiers containsObject:(NSString *)kUTTypeURL])
>+                [allowedItems addObject:item];
>+        }
>+        EXPECT_EQ(1UL, allowedItems.count);
>+        return allowedItems;
>+    }];
>+
>+    auto firstItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [firstItemProvider registerObject:@"This is a string." visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    auto secondItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [secondItemProvider registerObject:[NSURL URLWithString:@"https://webkit.org/"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    [simulator setExternalItemProviders:@[ firstItemProvider.get(), secondItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("https://webkit.org/", [webView stringByEvaluatingJavaScript:@"editor.textContent"]);
>+}
>+
>+TEST(DragAndDropTests, OverrideDrop)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"simple"];
>+
>+    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [simulatedItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:[@"<body></body>" dataUsingEncoding:NSUTF8StringEncoding]];
>+
>+    __block bool finishedLoadingData = false;
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>+    [simulator setOverrideDragUpdateBlock:^NSUInteger(NSUInteger operation, id session)
>+    {
>+        EXPECT_EQ(0U, operation);
>+        return UIDropOperationCopy;
>+    }];
>+    [simulator setDropCompletionBlock:^(BOOL handled, NSArray *itemProviders) {
>+        EXPECT_FALSE(handled);
>+        [itemProviders.firstObject loadDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML completionHandler:^(NSData *data, NSError *error) {
>+            NSString *text = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease];
>+            EXPECT_WK_STREQ("<body></body>", text.UTF8String);
>+            EXPECT_FALSE(!!error);
>+            finishedLoadingData = true;
>+        }];
>+    }];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+    TestWebKitAPI::Util::run(&finishedLoadingData);
>+}
>+
>+TEST(DragAndDropTests, InjectedBundleOverridePerformTwoStepDrop)
>+{
>+    WKWebViewConfiguration *configuration = [WKWebViewConfiguration _test_configurationWithTestPlugInClassName:@"BundleEditingDelegatePlugIn"];
>+    [configuration.processPool _setObject:@YES forBundleParameter:@"BundleOverridePerformTwoStepDrop"];
>+
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:configuration]);
>+    [webView loadTestPageNamed:@"autofocus-contenteditable"];
>+    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>+
>+    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [simulatedItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>+    {
>+        completionBlock([@"Hello world" dataUsingEncoding:NSUTF8StringEncoding], nil);
>+        return [NSProgress discreteProgressWithTotalUnitCount:100];
>+    }];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+
>+    EXPECT_EQ(0UL, [webView stringByEvaluatingJavaScript:@"editor.textContent"].length);
>+}
>+
>+TEST(DragAndDropTests, InjectedBundleAllowPerformTwoStepDrop)
>+{
>+    WKWebViewConfiguration *configuration = [WKWebViewConfiguration _test_configurationWithTestPlugInClassName:@"BundleEditingDelegatePlugIn"];
>+    [configuration.processPool _setObject:@NO forBundleParameter:@"BundleOverridePerformTwoStepDrop"];
>+
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:configuration]);
>+    [webView synchronouslyLoadTestPageNamed:@"autofocus-contenteditable"];
>+    [webView stringByEvaluatingJavaScript:@"getSelection().removeAllRanges()"];
>+
>+    auto simulatedItemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [simulatedItemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>+    {
>+        completionBlock([@"Hello world" dataUsingEncoding:NSUTF8StringEncoding], nil);
>+        return [NSProgress discreteProgressWithTotalUnitCount:100];
>+    }];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setExternalItemProviders:@[ simulatedItemProvider.get() ]];
>+    [simulator runFrom:CGPointMake(300, 400) to:CGPointMake(100, 300)];
>+
>+    EXPECT_WK_STREQ("Hello world", [webView stringByEvaluatingJavaScript:@"editor.textContent"].UTF8String);
>+}
>+
>+TEST(DragAndDropTests, InjectedBundleImageElementData)
>+{
>+    WKWebViewConfiguration *configuration = [WKWebViewConfiguration _test_configurationWithTestPlugInClassName:@"BundleEditingDelegatePlugIn"];
>+    [configuration _setAttachmentElementEnabled:YES];
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:configuration]);
>+    [webView synchronouslyLoadTestPageNamed:@"image-and-contenteditable"];
>+
>+    __block RetainPtr<NSString> injectedString;
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setConvertItemProvidersBlock:^NSArray *(UIItemProvider *itemProvider, NSArray *, NSDictionary *data)
>+    {
>+        injectedString = adoptNS([[NSString alloc] initWithData:data[InjectedBundlePasteboardDataType] encoding:NSUTF8StringEncoding]);
>+        return @[ itemProvider ];
>+    }];
>+
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 250)];
>+
>+    EXPECT_WK_STREQ("hello", [injectedString UTF8String]);
>+}
>+
>+TEST(DragAndDropTests, InjectedBundleAttachmentElementData)
>+{
>+    WKWebViewConfiguration *configuration = [WKWebViewConfiguration _test_configurationWithTestPlugInClassName:@"BundleEditingDelegatePlugIn"];
>+    [configuration _setAttachmentElementEnabled:YES];
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:configuration]);
>+    [webView synchronouslyLoadTestPageNamed:@"attachment-element"];
>+
>+    __block RetainPtr<NSString> injectedString;
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setConvertItemProvidersBlock:^NSArray *(UIItemProvider *itemProvider, NSArray *, NSDictionary *data)
>+    {
>+        injectedString = adoptNS([[NSString alloc] initWithData:data[InjectedBundlePasteboardDataType] encoding:NSUTF8StringEncoding]);
>+        return @[ itemProvider ];
>+    }];
>+
>+    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(50, 400)];
>+
>+    EXPECT_WK_STREQ("hello", [injectedString UTF8String]);
>+    EXPECT_TRUE([webView stringByEvaluatingJavaScript:@"getSelection().isCollapsed"].boolValue);
>+}
>+
>+TEST(DragAndDropTests, LargeImageToTargetDiv)
>+{
>+    auto testWebViewConfiguration = adoptNS([[WKWebViewConfiguration alloc] init]);
>+    [[testWebViewConfiguration preferences] _setLargeImageAsyncDecodingEnabled:NO];
>+
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:testWebViewConfiguration.get()]);
>+    [webView synchronouslyLoadTestPageNamed:@"div-and-large-image"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(200, 400) to:CGPointMake(200, 150)];
>+    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target.textContent"].UTF8String);
>+    checkFirstTypeIsPresentAndSecondTypeIsMissing(simulator.get(), kUTTypePNG, kUTTypeFileURL);
>+    checkEstimatedSize(simulator.get(), { 2000, 2000 });
>+}
>+
>+TEST(DragAndDropTests, LinkWithEmptyHREF)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"link-and-input"];
>+    [webView stringByEvaluatingJavaScript:@"document.querySelector('a').href = ''"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+
>+    EXPECT_EQ(DragAndDropPhaseCancelled, [simulator phase]);
>+    EXPECT_WK_STREQ("", [webView editorValue].UTF8String);
>+}
>+
>+TEST(DragAndDropTests, CancelledLiftDoesNotCauseSubsequentDragsToFail)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"link-and-target-div"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setConvertItemProvidersBlock:^NSArray *(UIItemProvider *, NSArray *, NSDictionary *)
>+    {
>+        return @[ ];
>+    }];
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+    EXPECT_EQ(DragAndDropPhaseCancelled, [simulator phase]);
>+    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"target.textContent"]);
>+    NSString *outputText = [webView stringByEvaluatingJavaScript:@"output.textContent"];
>+    checkStringArraysAreEqual(@[@"dragstart", @"dragend"], [outputText componentsSeparatedByString:@" "]);
>+
>+    [webView stringByEvaluatingJavaScript:@"output.innerHTML = ''"];
>+    [simulator setConvertItemProvidersBlock:^NSArray *(UIItemProvider *itemProvider, NSArray *, NSDictionary *)
>+    {
>+        return @[ itemProvider ];
>+    }];
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target.textContent"]);
>+    [webView stringByEvaluatingJavaScript:@"output.textContent"];
>+    checkStringArraysAreEqual(@[@"dragstart", @"dragend"], [outputText componentsSeparatedByString:@" "]);
>+}
>+
>+static void testDragAndDropOntoTargetElements(TestWKWebView *webView)
>+{
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView]);
>+    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(50, 250)];
>+    EXPECT_WK_STREQ("rgb(0, 128, 0)", [webView stringByEvaluatingJavaScript:@"getComputedStyle(target1).backgroundColor"]);
>+    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target1.textContent"]);
>+
>+    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(250, 50)];
>+    EXPECT_WK_STREQ("rgb(0, 128, 0)", [webView stringByEvaluatingJavaScript:@"getComputedStyle(target2).backgroundColor"]);
>+    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target2.textContent"]);
>+
>+    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(250, 250)];
>+    EXPECT_WK_STREQ("rgb(0, 128, 0)", [webView stringByEvaluatingJavaScript:@"getComputedStyle(target3).backgroundColor"]);
>+    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target3.textContent"]);
>+}
>+
>+TEST(DragAndDropTests, DragEventClientCoordinatesBasic)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"drop-targets"];
>+
>+    testDragAndDropOntoTargetElements(webView.get());
>+}
>+
>+TEST(DragAndDropTests, DragEventClientCoordinatesWithScrollOffset)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"drop-targets"];
>+    [webView stringByEvaluatingJavaScript:@"document.body.style.margin = '1000px 0'"];
>+    [webView stringByEvaluatingJavaScript:@"document.scrollingElement.scrollTop = 1000"];
>+    [webView waitForNextPresentationUpdate];
>+
>+    testDragAndDropOntoTargetElements(webView.get());
>+}
>+
>+TEST(DragAndDropTests, DragEventPageCoordinatesBasic)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"drop-targets"];
>+    [webView stringByEvaluatingJavaScript:@"window.usePageCoordinates = true"];
>+
>+    testDragAndDropOntoTargetElements(webView.get());
>+}
>+
>+TEST(DragAndDropTests, DragEventPageCoordinatesWithScrollOffset)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"drop-targets"];
>+    [webView stringByEvaluatingJavaScript:@"document.body.style.margin = '1000px 0'"];
>+    [webView stringByEvaluatingJavaScript:@"document.scrollingElement.scrollTop = 1000"];
>+    [webView stringByEvaluatingJavaScript:@"window.usePageCoordinates = true"];
>+    [webView waitForNextPresentationUpdate];
>+
>+    testDragAndDropOntoTargetElements(webView.get());
>+}
>+
>+TEST(DragAndDropTests, DoNotCrashWhenSelectionIsClearedInDragStart)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dragstart-clear-selection"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 100) to:CGPointMake(100, 100)];
>+
>+    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"paragraph.textContent"]);
>+}
>+
>+// FIXME: Re-enable this test once we resolve <https://bugs.webkit.org/show_bug.cgi?id=175204>
>+#if __IPHONE_OS_VERSION_MAX_ALLOWED <= 110401
>+TEST(DragAndDropTests, CustomActionSheetPopover)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"link-and-target-div"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator setShouldEnsureUIApplication:YES];
>+
>+    __block BOOL didInvokeCustomActionSheet = NO;
>+    [simulator setShowCustomActionSheetBlock:^BOOL(_WKActivatedElementInfo *element)
>+    {
>+        EXPECT_EQ(_WKActivatedElementTypeLink, element.type);
>+        EXPECT_WK_STREQ("Hello world", element.title.UTF8String);
>+        didInvokeCustomActionSheet = YES;
>+        return YES;
>+    }];
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(100, 300)];
>+    EXPECT_TRUE(didInvokeCustomActionSheet);
>+    EXPECT_WK_STREQ("PASS", [webView stringByEvaluatingJavaScript:@"target.textContent"].UTF8String);
>+}
>+#endif
>+
>+TEST(DragAndDropTests, UnresponsivePageDoesNotHangUI)
>+{
>+    _WKProcessPoolConfiguration *processPoolConfiguration = [[[_WKProcessPoolConfiguration alloc] init] autorelease];
>+    processPoolConfiguration.ignoreSynchronousMessagingTimeoutsForTesting = YES;
>+
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500) configuration:[[[WKWebViewConfiguration alloc] init] autorelease] processPoolConfiguration:processPoolConfiguration]);
>+    [webView synchronouslyLoadTestPageNamed:@"simple"];
>+    [webView evaluateJavaScript:@"while(1);" completionHandler:nil];
>+
>+    // The test passes if we can prepare for a drag session without timing out.
>+    auto dragSession = adoptNS([[MockDragSession alloc] init]);
>+    [(id <UIDragInteractionDelegate_ForWebKitOnly>)[webView dragInteractionDelegate] _dragInteraction:[webView dragInteraction] prepareForSession:dragSession.get() completion:^() { }];
>+}
>+
>+TEST(DragAndDropTests, WebItemProviderPasteboardLoading)
>+{
>+    static NSString *fastString = @"This data loads quickly";
>+    static NSString *slowString = @"This data loads slowly";
>+
>+    WebItemProviderPasteboard *pasteboard = [WebItemProviderPasteboard sharedInstance];
>+    auto fastItem = adoptNS([[UIItemProvider alloc] init]);
>+    [fastItem registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>+    {
>+        completionBlock([fastString dataUsingEncoding:NSUTF8StringEncoding], nil);
>+        return nil;
>+    }];
>+
>+    auto slowItem = adoptNS([[UIItemProvider alloc] init]);
>+    [slowItem registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText options:nil loadHandler:^NSProgress *(UIItemProviderDataLoadCompletionBlock completionBlock)
>+    {
>+        sleep(2_s);
>+        completionBlock([slowString dataUsingEncoding:NSUTF8StringEncoding], nil);
>+        return nil;
>+    }];
>+
>+    __block bool hasRunFirstCompletionBlock = false;
>+    pasteboard.itemProviders = @[ fastItem.get(), slowItem.get() ];
>+    [pasteboard doAfterLoadingProvidedContentIntoFileURLs:^(NSArray<NSURL *> *urls) {
>+        EXPECT_EQ(2UL, urls.count);
>+        auto firstString = adoptNS([[NSString alloc] initWithContentsOfURL:urls[0] encoding:NSUTF8StringEncoding error:nil]);
>+        auto secondString = adoptNS([[NSString alloc] initWithContentsOfURL:urls[1] encoding:NSUTF8StringEncoding error:nil]);
>+        EXPECT_WK_STREQ(fastString, [firstString UTF8String]);
>+        EXPECT_WK_STREQ(slowString, [secondString UTF8String]);
>+        hasRunFirstCompletionBlock = true;
>+    } synchronousTimeout:600];
>+    EXPECT_TRUE(hasRunFirstCompletionBlock);
>+
>+    __block bool hasRunSecondCompletionBlock = false;
>+    [pasteboard doAfterLoadingProvidedContentIntoFileURLs:^(NSArray<NSURL *> *urls) {
>+        EXPECT_EQ(2UL, urls.count);
>+        auto firstString = adoptNS([[NSString alloc] initWithContentsOfURL:urls[0] encoding:NSUTF8StringEncoding error:nil]);
>+        auto secondString = adoptNS([[NSString alloc] initWithContentsOfURL:urls[1] encoding:NSUTF8StringEncoding error:nil]);
>+        EXPECT_WK_STREQ(fastString, [firstString UTF8String]);
>+        EXPECT_WK_STREQ(slowString, [secondString UTF8String]);
>+        hasRunSecondCompletionBlock = true;
>+    } synchronousTimeout:0];
>+    EXPECT_FALSE(hasRunSecondCompletionBlock);
>+    TestWebKitAPI::Util::run(&hasRunSecondCompletionBlock);
>+}
>+
>+TEST(DragAndDropTests, DoNotCrashWhenSelectionMovesOffscreenAfterDragStart)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dragstart-change-selection-offscreen"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(100, 100) to:CGPointMake(100, 100)];
>+
>+    EXPECT_WK_STREQ("FAR OFFSCREEN", [webView stringByEvaluatingJavaScript:@"getSelection().getRangeAt(0).toString()"]);
>+}
>+
>+TEST(DragAndDropTests, AdditionalItemsCanBePreventedOnDragStart)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"selected-text-image-link-and-editable"];
>+    [webView stringByEvaluatingJavaScript:@"link.addEventListener('dragstart', e => e.preventDefault())"];
>+    [webView stringByEvaluatingJavaScript:@"image.addEventListener('dragstart', e => e.preventDefault())"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(50, 400) additionalItemRequestLocations:@{
>+        @0.33: [NSValue valueWithCGPoint:CGPointMake(50, 150)],
>+        @0.66: [NSValue valueWithCGPoint:CGPointMake(50, 250)]
>+    }];
>+    EXPECT_WK_STREQ("ABCD", [webView stringByEvaluatingJavaScript:@"editor.textContent"]);
>+}
>+
>+TEST(DragAndDropTests, AdditionalLinkAndImageIntoContentEditable)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"selected-text-image-link-and-editable"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    [simulator runFrom:CGPointMake(50, 50) to:CGPointMake(50, 400) additionalItemRequestLocations:@{
>+        @0.33: [NSValue valueWithCGPoint:CGPointMake(50, 150)],
>+        @0.66: [NSValue valueWithCGPoint:CGPointMake(50, 250)]
>+    }];
>+    EXPECT_WK_STREQ("ABCDA link", [webView stringByEvaluatingJavaScript:@"editor.textContent"]);
>+    EXPECT_TRUE([webView stringByEvaluatingJavaScript:@"!!editor.querySelector('img')"]);
>+    EXPECT_WK_STREQ("https://www.apple.com/", [webView stringByEvaluatingJavaScript:@"editor.querySelector('a').href"]);
>+}
>+
>+TEST(DragAndDropTests, DragLiftPreviewDataTransferSetDragImage)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"DataTransfer-setDragImage"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    // Use DataTransfer.setDragImage to specify an existing image element in the DOM.
>+    [simulator runFrom:CGPointMake(100, 50) to:CGPointMake(250, 50)];
>+    checkCGRectIsEqualToCGRectWithLogging({{100, 50}, {215, 174}}, [simulator liftPreviews][0].view.frame);
>+
>+    // Use DataTransfer.setDragImage to specify an existing image element in the DOM, with x and y offsets.
>+    [simulator runFrom:CGPointMake(10, 150) to:CGPointMake(250, 150)];
>+    checkCGRectIsEqualToCGRectWithLogging({{-90, 50}, {215, 174}}, [simulator liftPreviews][0].view.frame);
>+
>+    // Use DataTransfer.setDragImage to specify a newly created Image, disconnected from the DOM.
>+    [simulator runFrom:CGPointMake(100, 250) to:CGPointMake(250, 250)];
>+    checkCGRectIsEqualToCGRectWithLogging({{100, 250}, {215, 174}}, [simulator liftPreviews][0].view.frame);
>+
>+    // Don't use DataTransfer.setDragImage and fall back to snapshotting the dragged element.
>+    [simulator runFrom:CGPointMake(50, 350) to:CGPointMake(250, 350)];
>+    checkCGRectIsEqualToCGRectWithLogging({{0, 300}, {300, 100}}, [simulator liftPreviews][0].view.frame);
>+
>+    // Perform a normal drag on an image.
>+    [simulator runFrom:CGPointMake(50, 450) to:CGPointMake(250, 450)];
>+    checkCGRectIsEqualToCGRectWithLogging({{0, 400}, {215, 174}}, [simulator liftPreviews][0].view.frame);
>+}
>+
>+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>+
>+static NSData *testIconImageData()
>+{
>+    return [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"icon" ofType:@"png" inDirectory:@"TestWebKitAPI.resources"]];
>+}
>+
>+TEST(DragAndDropTests, DataTransferGetDataWhenDroppingImageAndMarkup)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    WKPreferencesSetCustomPasteboardDataEnabled((WKPreferencesRef)[webView configuration].preferences, true);
>+    [webView synchronouslyLoadTestPageNamed:@"DataTransfer"];
>+
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypePNG withData:testIconImageData()];
>+    NSString *markupString = @"<script>bar()</script><strong onmousedown=javascript:void(0)>HELLO WORLD</strong>";
>+    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML withData:[markupString dataUsingEncoding:NSUTF8StringEncoding]];
>+    [itemProvider setSuggestedName:@"icon"];
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+    [simulator runFrom:CGPointZero to:CGPointMake(50, 100)];
>+
>+    EXPECT_WK_STREQ("Files, text/html", [webView stringByEvaluatingJavaScript:@"types.textContent"]);
>+    EXPECT_WK_STREQ("(STRING, text/html), (FILE, image/png)", [webView stringByEvaluatingJavaScript:@"items.textContent"]);
>+    EXPECT_WK_STREQ("('icon.png', image/png)", [webView stringByEvaluatingJavaScript:@"files.textContent"]);
>+    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"urlData.textContent"]);
>+    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"textData.textContent"]);
>+    EXPECT_WK_STREQ("HELLO WORLD", [webView stringByEvaluatingJavaScript:@"htmlData.textContent"]);
>+    EXPECT_FALSE([[webView stringByEvaluatingJavaScript:@"rawHTMLData.textContent"] containsString:@"script"]);
>+}
>+
>+TEST(DragAndDropTests, DataTransferGetDataWhenDroppingPlainText)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView stringByEvaluatingJavaScript:@"select(plain)"];
>+    [simulator runFrom:CGPointMake(50, 75) to:CGPointMake(50, 375)];
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover": @{ @"text/plain" : @"" },
>+        @"drop": @{ @"text/plain" : @"Plain text" }
>+    });
>+}
>+
>+TEST(DragAndDropTests, DataTransferGetDataWhenDroppingCustomData)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>+    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>+    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover" : @{
>+            @"text/plain" : @"",
>+            @"foo/plain" : @"",
>+            @"text/html" : @"",
>+            @"bar/html" : @"",
>+            @"text/uri-list" : @"",
>+            @"baz/uri-list" : @""
>+        },
>+        @"drop" : @{
>+            @"text/plain" : @"ben bitdiddle",
>+            @"foo/plain" : @"eva lu ator",
>+            @"text/html" : @"<b>bold text</b>",
>+            @"bar/html" : @"<i>italic text</i>",
>+            @"text/uri-list" : @"https://www.apple.com",
>+            @"baz/uri-list" : @"https://www.webkit.org"
>+        }
>+    });
>+}
>+
>+TEST(DragAndDropTests, DataTransferGetDataWhenDroppingURL)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView stringByEvaluatingJavaScript:@"rich.innerHTML = '<a href=\"https://www.apple.com/\">This is a link.</a>'"];
>+    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover": @{
>+            @"text/uri-list" : @"",
>+            @"text/plain" : @""
>+        },
>+        @"drop": @{
>+            @"text/uri-list" : @"https://www.apple.com/",
>+            @"text/plain" : @"https://www.apple.com/"
>+        }
>+    });
>+}
>+
>+TEST(DragAndDropTests, DataTransferGetDataWhenDroppingImageWithFileURL)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSURL *iconURL = [[NSBundle mainBundle] URLForResource:@"icon" withExtension:@"png" subdirectory:@"TestWebKitAPI.resources"];
>+    [itemProvider registerFileRepresentationForTypeIdentifier:(NSString *)kUTTypePNG fileOptions:0 visibility:NSItemProviderRepresentationVisibilityAll loadHandler:[protectedIconURL = retainPtr(iconURL)] (FileLoadCompletionBlock completionHandler) -> NSProgress * {
>+        completionHandler(protectedIconURL.get(), NO, nil);
>+        return nil;
>+    }];
>+    [itemProvider registerObject:iconURL visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+
>+    [simulator runFrom:CGPointMake(300, 375) to:CGPointMake(50, 375)];
>+
>+    // File URLs should never be exposed directly to web content, so DataTransfer.getData should return an empty string here.
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover": @{ @"Files": @"", @"text/uri-list": @"" },
>+        @"drop": @{ @"Files": @"", @"text/uri-list": @"" }
>+    });
>+}
>+
>+TEST(DragAndDropTests, DataTransferGetDataWhenDroppingImageWithHTTPURL)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeJPEG visibility:NSItemProviderRepresentationVisibilityAll loadHandler:^NSProgress *(DataLoadCompletionBlock completionHandler)
>+    {
>+        completionHandler(UIImageJPEGRepresentation(testIconImage(), 0.5), nil);
>+        return nil;
>+    }];
>+    [itemProvider registerObject:[NSURL URLWithString:@"http://webkit.org"] visibility:UIItemProviderRepresentationOptionsVisibilityAll];
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+
>+    [simulator runFrom:CGPointMake(300, 375) to:CGPointMake(50, 375)];
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover": @{ @"Files": @"", @"text/uri-list": @"" },
>+        @"drop": @{ @"Files": @"", @"text/uri-list": @"http://webkit.org/" }
>+    });
>+}
>+
>+TEST(DragAndDropTests, DataTransferGetDataWhenDroppingRespectsPresentationStyle)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    runTestWithTemporaryTextFile(^(NSURL *fileURL) {
>+        auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>+        [itemProvider registerFileRepresentationForTypeIdentifier:(NSString *)kUTTypeUTF8PlainText fileOptions:0 visibility:NSItemProviderRepresentationVisibilityAll loadHandler:[protectedFileURL = retainPtr(fileURL)] (FileLoadCompletionBlock completionHandler) -> NSProgress * {
>+            completionHandler(protectedFileURL.get(), NO, nil);
>+            return nil;
>+        }];
>+        [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+
>+        [itemProvider setPreferredPresentationStyle:UIPreferredPresentationStyleAttachment];
>+        [simulator runFrom:CGPointMake(300, 375) to:CGPointMake(50, 375)];
>+        checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+            @"dragover": @{ @"Files" : @"" },
>+            @"drop": @{ @"Files" : @"" }
>+        });
>+
>+        [itemProvider setPreferredPresentationStyle:UIPreferredPresentationStyleInline];
>+        [simulator runFrom:CGPointMake(300, 375) to:CGPointMake(50, 375)];
>+        checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+            @"dragover": @{ @"text/plain" : @"" },
>+            @"drop": @{ @"text/plain" : @"This is a tiny blob of text." }
>+        });
>+    });
>+}
>+
>+TEST(DragAndDropTests, DataTransferSetDataCannotWritePlatformTypes)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>+    [webView stringByEvaluatingJavaScript:@"customData = { 'text/plain' : 'foo', 'com.adobe.pdf' : 'try and decode me!' }"];
>+    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>+
>+    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>+    checkFirstTypeIsPresentAndSecondTypeIsMissing(simulator.get(), kUTTypeUTF8PlainText, kUTTypePDF);
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover": @{
>+            @"text/plain": @"",
>+            @"com.adobe.pdf": @""
>+        },
>+        @"drop": @{
>+            @"text/plain": @"foo",
>+            @"com.adobe.pdf": @"try and decode me!"
>+        }
>+    });
>+}
>+
>+TEST(DragAndDropTests, DataTransferGetDataReadPlainAndRichText)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"DataTransfer"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    NSDictionary *textAttributes = @{ NSFontAttributeName: [UIFont boldSystemFontOfSize:20] };
>+    NSAttributedString *richText = [[NSAttributedString alloc] initWithString:@"WebKit" attributes:textAttributes];
>+    [itemProvider registerObject:richText visibility:NSItemProviderRepresentationVisibilityAll];
>+    [itemProvider registerObject:[NSURL URLWithString:@"https://www.webkit.org/"] visibility:NSItemProviderRepresentationVisibilityAll];
>+    [itemProvider registerObject:@"WebKit" visibility:NSItemProviderRepresentationVisibilityAll];
>+
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+    [simulator runFrom:CGPointZero to:CGPointMake(50, 100)];
>+
>+    EXPECT_WK_STREQ("text/html, text/plain, text/uri-list", [webView stringByEvaluatingJavaScript:@"types.textContent"]);
>+    EXPECT_WK_STREQ("WebKit", [webView stringByEvaluatingJavaScript:@"textData.textContent"]);
>+    EXPECT_WK_STREQ("https://www.webkit.org/", [webView stringByEvaluatingJavaScript:@"urlData.textContent"]);
>+    EXPECT_WK_STREQ("WebKit", [webView stringByEvaluatingJavaScript:@"htmlData.textContent"]);
>+    EXPECT_WK_STREQ("(STRING, text/html), (STRING, text/plain), (STRING, text/uri-list)", [webView stringByEvaluatingJavaScript:@"items.textContent"]);
>+    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"files.textContent"]);
>+}
>+
>+TEST(DragAndDropTests, DataTransferSuppressGetDataDueToPresenceOfTextFile)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"DataTransfer"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [itemProvider registerObject:@"Hello world" visibility:NSItemProviderRepresentationVisibilityAll];
>+    [itemProvider setSuggestedName:@"hello.txt"];
>+
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+    [simulator runFrom:CGPointZero to:CGPointMake(50, 100)];
>+
>+    EXPECT_WK_STREQ("Files", [webView stringByEvaluatingJavaScript:@"types.textContent"]);
>+    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"textData.textContent"]);
>+    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"urlData.textContent"]);
>+    EXPECT_WK_STREQ("", [webView stringByEvaluatingJavaScript:@"htmlData.textContent"]);
>+    EXPECT_WK_STREQ("(FILE, text/plain)", [webView stringByEvaluatingJavaScript:@"items.textContent"]);
>+    EXPECT_WK_STREQ("('hello.txt', text/plain)", [webView stringByEvaluatingJavaScript:@"files.textContent"]);
>+}
>+
>+TEST(DragAndDropTests, DataTransferGetDataCannotReadPrivateArbitraryTypes)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    auto itemProvider = adoptNS([[UIItemProvider alloc] init]);
>+    [itemProvider registerDataRepresentationForTypeIdentifier:(NSString *)kUTTypeMP3 visibility:NSItemProviderRepresentationVisibilityAll loadHandler:^NSProgress *(DataLoadCompletionBlock completionHandler)
>+    {
>+        completionHandler([@"this is a test" dataUsingEncoding:NSUTF8StringEncoding], nil);
>+        return nil;
>+    }];
>+    [itemProvider registerDataRepresentationForTypeIdentifier:@"org.WebKit.TestWebKitAPI.custom-pasteboard-type" visibility:NSItemProviderRepresentationVisibilityAll loadHandler:^NSProgress *(DataLoadCompletionBlock completionHandler)
>+    {
>+        completionHandler([@"this is another test" dataUsingEncoding:NSUTF8StringEncoding], nil);
>+        return nil;
>+    }];
>+    [simulator setExternalItemProviders:@[ itemProvider.get() ]];
>+    [itemProvider setPreferredPresentationStyle:UIPreferredPresentationStyleInline];
>+    [simulator runFrom:CGPointMake(300, 375) to:CGPointMake(50, 375)];
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover": @{ },
>+        @"drop": @{ }
>+    });
>+}
>+
>+TEST(DragAndDropTests, DataTransferSetDataValidURL)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>+    [webView stringByEvaluatingJavaScript:@"customData = { 'url' : 'https://webkit.org/b/123' }"];
>+    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>+
>+    __block bool done = false;
>+    [simulator.get() setOverridePerformDropBlock:^NSArray<UIDragItem *> *(id <UIDropSession> session)
>+    {
>+        EXPECT_EQ(1UL, session.items.count);
>+        auto *item = session.items[0].itemProvider;
>+        EXPECT_TRUE([item.registeredTypeIdentifiers containsObject:(NSString *)kUTTypeURL]);
>+        EXPECT_TRUE([item canLoadObjectOfClass: [NSURL class]]);
>+        [item loadObjectOfClass:[NSURL class] completionHandler:^(id<NSItemProviderReading> url, NSError *error) {
>+            EXPECT_TRUE([url isKindOfClass: [NSURL class]]);
>+            EXPECT_WK_STREQ([(NSURL *)url absoluteString], @"https://webkit.org/b/123");
>+            done = true;
>+        }];
>+        return session.items;
>+    }];
>+    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>+
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover": @{
>+            @"text/uri-list": @"",
>+        },
>+        @"drop": @{
>+            @"text/uri-list": @"https://webkit.org/b/123",
>+        }
>+    });
>+    TestWebKitAPI::Util::run(&done);
>+}
>+
>+TEST(DragAndDropTests, DataTransferSetDataUnescapedURL)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>+    [webView stringByEvaluatingJavaScript:@"customData = { 'url' : 'http://webkit.org/b/\u4F60\u597D;?x=8 + 6' }"];
>+    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>+
>+    __block bool done = false;
>+    [simulator.get() setOverridePerformDropBlock:^NSArray<UIDragItem *> *(id <UIDropSession> session)
>+    {
>+        EXPECT_EQ(1UL, session.items.count);
>+        auto *item = session.items[0].itemProvider;
>+        EXPECT_TRUE([item.registeredTypeIdentifiers containsObject:(NSString *)kUTTypeURL]);
>+        EXPECT_TRUE([item canLoadObjectOfClass: [NSURL class]]);
>+        [item loadObjectOfClass:[NSURL class] completionHandler:^(id<NSItemProviderReading> url, NSError *error) {
>+            EXPECT_TRUE([url isKindOfClass: [NSURL class]]);
>+            EXPECT_WK_STREQ([(NSURL *)url absoluteString], @"http://webkit.org/b/%E4%BD%A0%E5%A5%BD;?x=8%20+%206");
>+            done = true;
>+        }];
>+        return session.items;
>+    }];
>+    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>+
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover": @{
>+            @"text/uri-list": @"",
>+        },
>+        @"drop": @{
>+            @"text/uri-list": @"http://webkit.org/b/\u4F60\u597D;?x=8 + 6",
>+        }
>+    });
>+    TestWebKitAPI::Util::run(&done);
>+}
>+
>+TEST(DragAndDropTests, DataTransferSetDataInvalidURL)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>+    [webView stringByEvaluatingJavaScript:@"customData = { 'url' : 'some random string' }"];
>+    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>+
>+    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>+    NSArray *registeredTypes = [simulator.get().sourceItemProviders.firstObject registeredTypeIdentifiers];
>+    EXPECT_FALSE([registeredTypes containsObject:(NSString *)kUTTypeURL]);
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover": @{
>+            @"text/uri-list": @"",
>+        },
>+        @"drop": @{
>+            @"text/uri-list": @"some random string",
>+        }
>+    });
>+}
>+
>+TEST(DragAndDropTests, DataTransferSanitizeHTML)
>+{
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)]);
>+    [webView synchronouslyLoadTestPageNamed:@"dump-datatransfer-types"];
>+    auto simulator = adoptNS([[DraggingSimulator alloc] initWithWebView:webView.get()]);
>+
>+    [webView stringByEvaluatingJavaScript:@"select(rich)"];
>+    [webView stringByEvaluatingJavaScript:@"customData = { 'text/html' : '<meta content=\"secret\">"
>+        "<b onmouseover=\"dangerousCode()\">hello</b>, world<script>dangerousCode()</script>' }"];
>+    [webView stringByEvaluatingJavaScript:@"writeCustomData = true"];
>+
>+    __block bool done = false;
>+    [simulator.get() setOverridePerformDropBlock:^NSArray<UIDragItem *> *(id <UIDropSession> session)
>+    {
>+        EXPECT_EQ(1UL, session.items.count);
>+        auto *item = session.items[0].itemProvider;
>+        EXPECT_TRUE([item.registeredTypeIdentifiers containsObject:(NSString *)kUTTypeHTML]);
>+        [item loadDataRepresentationForTypeIdentifier:(NSString *)kUTTypeHTML completionHandler:^(NSData *data, NSError *error) {
>+            NSString *markup = [[[NSString alloc] initWithData:(NSData *)data encoding:NSUTF8StringEncoding] autorelease];
>+            EXPECT_TRUE([markup containsString:@"hello"]);
>+            EXPECT_TRUE([markup containsString:@", world"]);
>+            EXPECT_FALSE([markup containsString:@"secret"]);
>+            EXPECT_FALSE([markup containsString:@"dangerousCode"]);
>+            done = true;
>+        }];
>+        return session.items;
>+    }];
>+    [simulator runFrom:CGPointMake(50, 225) to:CGPointMake(50, 375)];
>+
>+    checkJSONWithLogging([webView stringByEvaluatingJavaScript:@"output.value"], @{
>+        @"dragover": @{
>+            @"text/html": @"",
>+        },
>+        @"drop": @{
>+            @"text/html": @"<meta content=\"secret\"><b onmouseover=\"dangerousCode()\">hello</b>, world<script>dangerousCode()</script>",
>+        }
>+    });
>+    TestWebKitAPI::Util::run(&done);
>+}
>+
>+#endif // __IPHONE_OS_VERSION_MIN_REQUIRED >= 110300
>+
>+} // namespace TestWebKitAPI
>+
>+#endif // ENABLE(DRAG_SUPPORT) && PLATFORM(IOS)
>diff --git a/Tools/TestWebKitAPI/cocoa/DraggingSimulator.h b/Tools/TestWebKitAPI/cocoa/DraggingSimulator.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..0cf55c506e8cea3e673e5dc9c5864872c18b28db
>--- /dev/null
>+++ b/Tools/TestWebKitAPI/cocoa/DraggingSimulator.h
>@@ -0,0 +1,111 @@
>+/*
>+ * Copyright (C) 2017 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#pragma once
>+
>+#if ENABLE(DRAG_SUPPORT)
>+
>+#import "TestWKWebView.h"
>+#import <WebKit/WKUIDelegatePrivate.h>
>+#import <WebKit/_WKInputDelegate.h>
>+#import <wtf/BlockPtr.h>
>+
>+#if PLATFORM(IOS)
>+#import "UIKitSPI.h"
>+#import <UIKit/NSItemProvider+UIKitAdditions.h>
>+#endif
>+
>+typedef NS_ENUM(NSInteger, DragAndDropPhase) {
>+    DragAndDropPhaseCancelled = 0,
>+    DragAndDropPhaseBeginning = 1,
>+    DragAndDropPhaseBegan = 2,
>+    DragAndDropPhaseEntered = 3,
>+    DragAndDropPhasePerformingDrop = 4
>+};
>+
>+#if PLATFORM(IOS)
>+
>+typedef NSDictionary<NSNumber *, NSValue *> *ProgressToCGPointValueMap;
>+
>+@interface MockDragDropSession : NSObject <UIDragDropSession> {
>+@private
>+    RetainPtr<NSArray> _mockItems;
>+    RetainPtr<UIWindow> _window;
>+}
>+@property (nonatomic) CGPoint mockLocationInWindow;
>+@property (nonatomic) BOOL allowMove;
>+@end
>+
>+@interface MockDropSession : MockDragDropSession <UIDropSession>
>+@end
>+
>+@interface MockDragSession : MockDragDropSession <UIDragSession>
>+@end
>+
>+@interface WKWebView (DragAndDropTesting)
>+- (id <UIDropInteractionDelegate>)dropInteractionDelegate;
>+- (id <UIDragInteractionDelegate>)dragInteractionDelegate;
>+- (UIDropInteraction *)dropInteraction;
>+- (UIDragInteraction *)dragInteraction;
>+@end
>+
>+#endif // PLATFORM(IOS)
>+
>+@interface DraggingSimulator : NSObject<WKUIDelegatePrivate, _WKInputDelegate>
>+
>+- (instancetype)initWithWebView:(TestWKWebView *)webView;
>+// The start location, end location, and locations of additional item requests are all in window coordinates.
>+- (void)runFrom:(CGPoint)startLocation to:(CGPoint)endLocation;
>+@property (nonatomic, readonly) NSArray<_WKAttachment *> *insertedAttachments;
>+@property (nonatomic, readonly) NSArray<_WKAttachment *> *removedAttachments;
>+@property (nonatomic, readonly) DragAndDropPhase phase;
>+
>+#if PLATFORM(IOS)
>+
>+- (void)runFrom:(CGPoint)startLocation to:(CGPoint)endLocation additionalItemRequestLocations:(ProgressToCGPointValueMap)additionalItemRequestLocations;
>+- (void)waitForInputSession;
>+- (void)endDataTransfer;
>+
>+@property (nonatomic) BOOL allowsFocusToStartInputSession;
>+@property (nonatomic) BOOL shouldEnsureUIApplication;
>+@property (nonatomic) BOOL shouldAllowMoveOperation;
>+@property (nonatomic) BlockPtr<BOOL(_WKActivatedElementInfo *)> showCustomActionSheetBlock;
>+@property (nonatomic) BlockPtr<NSArray *(UIItemProvider *, NSArray *, NSDictionary *)> convertItemProvidersBlock;
>+@property (nonatomic) BlockPtr<NSArray *(id <UIDropSession>)> overridePerformDropBlock;
>+@property (nonatomic, strong) NSArray *externalItemProviders;
>+@property (nonatomic) BlockPtr<NSUInteger(NSUInteger, id)> overrideDragUpdateBlock;
>+@property (nonatomic) BlockPtr<void(BOOL, NSArray *)> dropCompletionBlock;
>+
>+@property (nonatomic, readonly) NSArray *sourceItemProviders;
>+@property (nonatomic, readonly) NSArray *observedEventNames;
>+@property (nonatomic, readonly) NSArray *finalSelectionRects;
>+@property (nonatomic, readonly) CGRect lastKnownDragCaretRect;
>+@property (nonatomic, readonly) NSArray<UITargetedDragPreview *> *liftPreviews;
>+
>+#endif // PLATFORM(IOS)
>+
>+@end
>+
>+#endif // ENABLE(DRAG_SUPPORT)
>diff --git a/Tools/TestWebKitAPI/ios/DataInteractionSimulator.h b/Tools/TestWebKitAPI/ios/DataInteractionSimulator.h
>deleted file mode 100644
>index 3d372058c496766a62c090ba8773f4c51882a003..0000000000000000000000000000000000000000
>--- a/Tools/TestWebKitAPI/ios/DataInteractionSimulator.h
>+++ /dev/null
>@@ -1,178 +0,0 @@
>-/*
>- * Copyright (C) 2017 Apple Inc. All rights reserved.
>- *
>- * Redistribution and use in source and binary forms, with or without
>- * modification, are permitted provided that the following conditions
>- * are met:
>- * 1. Redistributions of source code must retain the above copyright
>- *    notice, this list of conditions and the following disclaimer.
>- * 2. Redistributions in binary form must reproduce the above copyright
>- *    notice, this list of conditions and the following disclaimer in the
>- *    documentation and/or other materials provided with the distribution.
>- *
>- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>- * THE POSSIBILITY OF SUCH DAMAGE.
>- */
>-
>-#pragma once
>-
>-#if ENABLE(DATA_INTERACTION)
>-
>-#import "TestWKWebView.h"
>-#import <UIKit/NSItemProvider+UIKitAdditions.h>
>-
>-#if USE(APPLE_INTERNAL_SDK)
>-#import <UIKit/NSString+UIItemProvider.h>
>-#import <UIKit/NSURL+UIItemProvider.h>
>-#import <UIKit/UIImage+UIItemProvider.h>
>-#import <UIKit/UIItemProvider.h>
>-#import <UIKit/UIItemProvider_Private.h>
>-#else
>-
>-@interface NSURL ()
>-@property (nonatomic, copy, setter=_setTitle:) NSString *_title;
>-@end
>-
>-#define UIItemProviderRepresentationOptionsVisibilityAll NSItemProviderRepresentationVisibilityAll
>-
>-@protocol UIItemProviderReading <NSItemProviderReading>
>-
>-@required
>-- (instancetype)initWithItemProviderData:(NSData *)data typeIdentifier:(NSString *)typeIdentifier error:(NSError **)outError;
>-
>-@end
>-
>-@protocol UIItemProviderWriting <NSItemProviderWriting>
>-
>-@required
>-- (NSProgress *)loadDataWithTypeIdentifier:(NSString *)typeIdentifier forItemProviderCompletionHandler:(void (^)(NSData *, NSError *))completionHandler;
>-
>-@end
>-
>-@interface NSAttributedString () <UIItemProviderReading, UIItemProviderWriting>
>-@end
>-@interface NSString () <UIItemProviderReading, UIItemProviderWriting>
>-@end
>-@interface NSURL () <UIItemProviderReading, UIItemProviderWriting>
>-@end
>-@interface UIImage () <UIItemProviderReading, UIItemProviderWriting>
>-@end
>-
>-@interface UIItemProvider : NSItemProvider
>-@end
>-
>-#endif
>-
>-#import <UIKit/UIKit.h>
>-#import <WebKit/WKUIDelegatePrivate.h>
>-#import <WebKit/_WKInputDelegate.h>
>-#import <wtf/BlockPtr.h>
>-
>-@class MockDropSession;
>-@class MockDragSession;
>-
>-@interface MockDragDropSession : NSObject <UIDragDropSession> {
>-@private
>-    RetainPtr<NSArray> _mockItems;
>-    RetainPtr<UIWindow> _window;
>-}
>-@property (nonatomic) CGPoint mockLocationInWindow;
>-@property (nonatomic) BOOL allowMove;
>-@end
>-
>-@interface MockDropSession : MockDragDropSession <UIDropSession>
>-@end
>-
>-@interface MockDragSession : MockDragDropSession <UIDragSession>
>-@end
>-
>-extern NSString * const DataInteractionEnterEventName;
>-extern NSString * const DataInteractionOverEventName;
>-extern NSString * const DataInteractionPerformOperationEventName;
>-extern NSString * const DataInteractionLeaveEventName;
>-extern NSString * const DataInteractionStartEventName;
>-
>-typedef NSDictionary<NSNumber *, NSValue *> *ProgressToCGPointValueMap;
>-
>-typedef NS_ENUM(NSInteger, DataInteractionPhase) {
>-    DataInteractionCancelled = 0,
>-    DataInteractionBeginning = 1,
>-    DataInteractionBegan = 2,
>-    DataInteractionEntered = 3,
>-    DataInteractionPerforming = 4
>-};
>-
>-@interface WKWebView (DragAndDropTesting)
>-- (id <UIDropInteractionDelegate>)dropInteractionDelegate;
>-- (id <UIDragInteractionDelegate>)dragInteractionDelegate;
>-- (UIDropInteraction *)dropInteraction;
>-- (UIDragInteraction *)dragInteraction;
>-@end
>-
>-@interface DataInteractionSimulator : NSObject<WKUIDelegatePrivate, _WKInputDelegate> {
>-@private
>-    RetainPtr<TestWKWebView> _webView;
>-    RetainPtr<MockDragSession> _dragSession;
>-    RetainPtr<MockDropSession> _dropSession;
>-    RetainPtr<NSMutableArray> _observedEventNames;
>-    RetainPtr<NSArray> _externalItemProviders;
>-    RetainPtr<NSArray *> _sourceItemProviders;
>-    RetainPtr<NSArray *> _finalSelectionRects;
>-    CGPoint _startLocation;
>-    CGPoint _endLocation;
>-    CGRect _lastKnownDragCaretRect;
>-
>-    RetainPtr<NSMutableDictionary<NSNumber *, NSValue *>>_remainingAdditionalItemRequestLocationsByProgress;
>-    RetainPtr<NSMutableArray<NSValue *>>_queuedAdditionalItemRequestLocations;
>-    RetainPtr<NSMutableArray<UITargetedDragPreview *>> _liftPreviews;
>-
>-    RetainPtr<NSMutableArray<_WKAttachment *>> _insertedAttachments;
>-    RetainPtr<NSMutableArray<_WKAttachment *>> _removedAttachments;
>-
>-    bool _isDoneWaitingForInputSession;
>-    double _currentProgress;
>-    bool _isDoneWithCurrentRun;
>-    DataInteractionPhase _phase;
>-
>-    RetainPtr<UIDropProposal> _currentDropProposal;
>-}
>-
>-- (instancetype)initWithWebView:(TestWKWebView *)webView;
>-// The start location, end location, and locations of additional item requests are all in window coordinates.
>-- (void)runFrom:(CGPoint)startLocation to:(CGPoint)endLocation;
>-- (void)runFrom:(CGPoint)startLocation to:(CGPoint)endLocation additionalItemRequestLocations:(ProgressToCGPointValueMap)additionalItemRequestLocations;
>-- (void)waitForInputSession;
>-- (void)endDataTransfer;
>-
>-@property (nonatomic) BOOL allowsFocusToStartInputSession;
>-@property (nonatomic) BOOL shouldEnsureUIApplication;
>-@property (nonatomic) BOOL shouldAllowMoveOperation;
>-@property (nonatomic) BlockPtr<BOOL(_WKActivatedElementInfo *)> showCustomActionSheetBlock;
>-@property (nonatomic) BlockPtr<NSArray *(UIItemProvider *, NSArray *, NSDictionary *)> convertItemProvidersBlock;
>-@property (nonatomic) BlockPtr<NSArray *(id <UIDropSession>)> overridePerformDropBlock;
>-@property (nonatomic, strong) NSArray *externalItemProviders;
>-@property (nonatomic) BlockPtr<NSUInteger(NSUInteger, id)> overrideDataInteractionOperationBlock;
>-@property (nonatomic) BlockPtr<void(BOOL, NSArray *)> dataInteractionOperationCompletionBlock;
>-
>-@property (nonatomic, readonly) NSArray *sourceItemProviders;
>-@property (nonatomic, readonly) NSArray *observedEventNames;
>-@property (nonatomic, readonly) NSArray *finalSelectionRects;
>-@property (nonatomic, readonly) DataInteractionPhase phase;
>-@property (nonatomic, readonly) CGRect lastKnownDragCaretRect;
>-@property (nonatomic, readonly) NSArray<UITargetedDragPreview *> *liftPreviews;
>-
>-@property (nonatomic, readonly) NSArray<_WKAttachment *> *insertedAttachments;
>-@property (nonatomic, readonly) NSArray<_WKAttachment *> *removedAttachments;
>-
>-@end
>-
>-#endif // ENABLE(DATA_INTERACTION)
>diff --git a/Tools/TestWebKitAPI/ios/DataInteractionSimulator.mm b/Tools/TestWebKitAPI/ios/DataInteractionSimulator.mm
>deleted file mode 100644
>index 856b0b1ff3bff0b4b98f7d7d1a87cb87b2c30844..0000000000000000000000000000000000000000
>--- a/Tools/TestWebKitAPI/ios/DataInteractionSimulator.mm
>+++ /dev/null
>@@ -1,675 +0,0 @@
>-/*
>- * Copyright (C) 2017 Apple Inc. All rights reserved.
>- *
>- * Redistribution and use in source and binary forms, with or without
>- * modification, are permitted provided that the following conditions
>- * are met:
>- * 1. Redistributions of source code must retain the above copyright
>- *    notice, this list of conditions and the following disclaimer.
>- * 2. Redistributions in binary form must reproduce the above copyright
>- *    notice, this list of conditions and the following disclaimer in the
>- *    documentation and/or other materials provided with the distribution.
>- *
>- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>- * THE POSSIBILITY OF SUCH DAMAGE.
>- */
>-
>-#include "config.h"
>-#include "DataInteractionSimulator.h"
>-
>-#if ENABLE(DATA_INTERACTION)
>-
>-#import "InstanceMethodSwizzler.h"
>-#import "PlatformUtilities.h"
>-#import "UIKitSPI.h"
>-
>-#import <UIKit/UIDragInteraction.h>
>-#import <UIKit/UIDragItem.h>
>-#import <UIKit/UIInteraction.h>
>-#import <WebKit/WKWebViewPrivate.h>
>-#import <WebKit/_WKFocusedElementInfo.h>
>-#import <WebKit/_WKFormInputSession.h>
>-#import <wtf/RetainPtr.h>
>-#import <wtf/SoftLinking.h>
>-
>-SOFT_LINK_FRAMEWORK(UIKit)
>-SOFT_LINK(UIKit, UIApplicationInstantiateSingleton, void, (Class singletonClass), (singletonClass))
>-
>-using namespace TestWebKitAPI;
>-
>-@implementation WKWebView (DragAndDropTesting)
>-
>-- (UIView *)_dragDropInteractionView
>-{
>-    return [self valueForKey:@"_currentContentView"];
>-}
>-
>-- (id <UIDropInteractionDelegate>)dropInteractionDelegate
>-{
>-    return (id <UIDropInteractionDelegate>)self._dragDropInteractionView;
>-}
>-
>-- (id <UIDragInteractionDelegate>)dragInteractionDelegate
>-{
>-    return (id <UIDragInteractionDelegate>)self._dragDropInteractionView;
>-}
>-
>-- (UIDropInteraction *)dropInteraction
>-{
>-    UIView *interactionView = self._dragDropInteractionView;
>-    for (id <UIInteraction> interaction in interactionView.interactions) {
>-        if ([interaction isKindOfClass:[UIDropInteraction class]])
>-            return (UIDropInteraction *)interaction;
>-    }
>-    return nil;
>-}
>-
>-- (UIDragInteraction *)dragInteraction
>-{
>-    UIView *interactionView = self._dragDropInteractionView;
>-    for (id <UIInteraction> interaction in interactionView.interactions) {
>-        if ([interaction isKindOfClass:[UIDragInteraction class]])
>-            return (UIDragInteraction *)interaction;
>-    }
>-    return nil;
>-}
>-
>-@end
>-
>-@implementation MockDragDropSession
>-
>-- (instancetype)initWithItems:(NSArray <UIDragItem *>*)items location:(CGPoint)locationInWindow window:(UIWindow *)window allowMove:(BOOL)allowMove
>-{
>-    if (self = [super init]) {
>-        _mockItems = items;
>-        _mockLocationInWindow = locationInWindow;
>-        _window = window;
>-        _allowMove = allowMove;
>-    }
>-    return self;
>-}
>-
>-- (BOOL)allowsMoveOperation
>-{
>-    return _allowMove;
>-}
>-
>-- (BOOL)isRestrictedToDraggingApplication
>-{
>-    return NO;
>-}
>-
>-- (BOOL)hasItemsConformingToTypeIdentifiers:(NSArray<NSString *> *)typeIdentifiers
>-{
>-    for (NSString *typeIdentifier in typeIdentifiers) {
>-        BOOL hasItemConformingToType = NO;
>-        for (UIDragItem *item in self.items)
>-            hasItemConformingToType |= [[item.itemProvider registeredTypeIdentifiers] containsObject:typeIdentifier];
>-        if (!hasItemConformingToType)
>-            return NO;
>-    }
>-    return YES;
>-}
>-
>-- (BOOL)canLoadObjectsOfClass:(Class<UIItemProviderReading>)aClass
>-{
>-    for (UIDragItem *item in self.items) {
>-        if ([item.itemProvider canLoadObjectOfClass:aClass])
>-            return YES;
>-    }
>-    return NO;
>-}
>-
>-- (BOOL)canLoadObjectsOfClasses:(NSArray<Class<UIItemProviderReading>> *)classes
>-{
>-    for (Class<UIItemProviderReading> aClass in classes) {
>-        BOOL canLoad = NO;
>-        for (UIDragItem *item in self.items)
>-            canLoad |= [item.itemProvider canLoadObjectOfClass:aClass];
>-        if (!canLoad)
>-            return NO;
>-    }
>-    return YES;
>-}
>-
>-- (NSArray<UIDragItem *> *)items
>-{
>-    return _mockItems.get();
>-}
>-
>-- (void)setItems:(NSArray<UIDragItem *> *)items
>-{
>-    _mockItems = items;
>-}
>-
>-- (void)addItems:(NSArray<UIDragItem *> *)items
>-{
>-    if (![items count])
>-        return;
>-
>-    if (![_mockItems count])
>-        _mockItems = items;
>-    else
>-        _mockItems = [_mockItems arrayByAddingObjectsFromArray:items];
>-}
>-
>-- (CGPoint)locationInView:(UIView *)view
>-{
>-    return [_window convertPoint:_mockLocationInWindow toView:view];
>-}
>-
>-@end
>-
>-NSString * const DataInteractionEnterEventName = @"dragenter";
>-NSString * const DataInteractionOverEventName = @"dragover";
>-NSString * const DataInteractionPerformOperationEventName = @"drop";
>-NSString * const DataInteractionLeaveEventName = @"dragleave";
>-NSString * const DataInteractionStartEventName = @"dragstart";
>-
>-@implementation MockDropSession
>-
>-- (instancetype)initWithProviders:(NSArray<UIItemProvider *> *)providers location:(CGPoint)locationInWindow window:(UIWindow *)window allowMove:(BOOL)allowMove
>-{
>-    auto items = adoptNS([[NSMutableArray alloc] init]);
>-    for (UIItemProvider *itemProvider in providers)
>-        [items addObject:[[[UIDragItem alloc] initWithItemProvider:itemProvider] autorelease]];
>-
>-    return [super initWithItems:items.get() location:locationInWindow window:window allowMove:allowMove];
>-}
>-
>-- (BOOL)isLocal
>-{
>-    return YES;
>-}
>-
>-- (NSProgress *)progress
>-{
>-    return [NSProgress discreteProgressWithTotalUnitCount:100];
>-}
>-
>-- (void)setProgressIndicatorStyle:(UIDropSessionProgressIndicatorStyle)progressIndicatorStyle
>-{
>-}
>-
>-- (UIDropSessionProgressIndicatorStyle)progressIndicatorStyle
>-{
>-    return UIDropSessionProgressIndicatorStyleNone;
>-}
>-
>-- (NSUInteger)operationMask
>-{
>-    return 0;
>-}
>-
>-- (id <UIDragSession>)localDragSession
>-{
>-    return nil;
>-}
>-
>-- (BOOL)hasItemsConformingToTypeIdentifier:(NSString *)typeIdentifier
>-{
>-    ASSERT_NOT_REACHED();
>-    return NO;
>-}
>-
>-- (BOOL)canCreateItemsOfClass:(Class<UIItemProviderReading>)aClass
>-{
>-    ASSERT_NOT_REACHED();
>-    return NO;
>-}
>-
>-- (NSProgress *)loadObjectsOfClass:(Class<NSItemProviderReading>)aClass completion:(void(^)(NSArray<__kindof id <NSItemProviderReading>> *objects))completion
>-{
>-    ASSERT_NOT_REACHED();
>-    return nil;
>-}
>-
>-@end
>-
>-@implementation MockDragSession {
>-    RetainPtr<id> _localContext;
>-}
>-
>-- (instancetype)initWithWindow:(UIWindow *)window allowMove:(BOOL)allowMove
>-{
>-    return [super initWithItems:@[ ] location:CGPointZero window:window allowMove:allowMove];
>-}
>-
>-- (NSUInteger)localOperationMask
>-{
>-    ASSERT_NOT_REACHED();
>-    return 0;
>-}
>-
>-- (NSUInteger)externalOperationMask
>-{
>-    ASSERT_NOT_REACHED();
>-    return 0;
>-}
>-
>-- (id)session
>-{
>-    return nil;
>-}
>-
>-- (id)localContext
>-{
>-    return _localContext.get();
>-}
>-
>-- (void)setLocalContext:(id)localContext
>-{
>-    _localContext = localContext;
>-}
>-
>-@end
>-
>-static double progressIncrementStep = 0.033;
>-static double progressTimeStep = 0.016;
>-static NSString *TestWebKitAPISimulateCancelAllTouchesNotificationName = @"TestWebKitAPISimulateCancelAllTouchesNotificationName";
>-
>-static NSArray *dataInteractionEventNames()
>-{
>-    static NSArray *eventNames = nil;
>-    static dispatch_once_t onceToken;
>-    dispatch_once(&onceToken, ^() {
>-        eventNames = @[ DataInteractionEnterEventName, DataInteractionOverEventName, DataInteractionPerformOperationEventName, DataInteractionLeaveEventName, DataInteractionStartEventName ];
>-    });
>-    return eventNames;
>-}
>-
>-@interface DataInteractionSimulatorApplication : UIApplication
>-@end
>-
>-@implementation DataInteractionSimulatorApplication
>-- (void)_cancelAllTouches
>-{
>-    [[NSNotificationCenter defaultCenter] postNotificationName:TestWebKitAPISimulateCancelAllTouchesNotificationName object:nil];
>-}
>-@end
>-
>-@implementation DataInteractionSimulator
>-
>-- (instancetype)initWithWebView:(TestWKWebView *)webView
>-{
>-    if (self = [super init]) {
>-        _webView = webView;
>-        _shouldEnsureUIApplication = NO;
>-        _shouldAllowMoveOperation = YES;
>-        _isDoneWaitingForInputSession = true;
>-        [_webView setUIDelegate:self];
>-        [_webView _setInputDelegate:self];
>-    }
>-    return self;
>-}
>-
>-- (void)dealloc
>-{
>-    if ([_webView UIDelegate] == self)
>-        [_webView setUIDelegate:nil];
>-
>-    if ([_webView _inputDelegate] == self)
>-        [_webView _setInputDelegate:nil];
>-
>-    [super dealloc];
>-}
>-
>-- (void)_resetSimulatedState
>-{
>-    _phase = DataInteractionBeginning;
>-    _currentProgress = 0;
>-    _isDoneWithCurrentRun = false;
>-    _observedEventNames = adoptNS([[NSMutableArray alloc] init]);
>-    _insertedAttachments = adoptNS([[NSMutableArray alloc] init]);
>-    _removedAttachments = adoptNS([[NSMutableArray alloc] init]);
>-    _finalSelectionRects = @[ ];
>-    _dragSession = nil;
>-    _dropSession = nil;
>-    _currentDropProposal = nil;
>-    _lastKnownDragCaretRect = CGRectZero;
>-    _remainingAdditionalItemRequestLocationsByProgress = nil;
>-    _queuedAdditionalItemRequestLocations = adoptNS([[NSMutableArray alloc] init]);
>-    _liftPreviews = adoptNS([[NSMutableArray alloc] init]);
>-}
>-
>-- (NSArray *)observedEventNames
>-{
>-    return _observedEventNames.get();
>-}
>-
>-- (void)simulateAllTouchesCanceled:(NSNotification *)notification
>-{
>-    [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(_advanceProgress) object:nil];
>-    _phase = DataInteractionCancelled;
>-    _currentProgress = 1;
>-    _isDoneWithCurrentRun = true;
>-    if (_dragSession)
>-        [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] session:_dragSession.get() didEndWithOperation:UIDropOperationCancel];
>-}
>-
>-- (void)runFrom:(CGPoint)startLocation to:(CGPoint)endLocation
>-{
>-    [self runFrom:startLocation to:endLocation additionalItemRequestLocations:nil];
>-}
>-
>-- (void)runFrom:(CGPoint)startLocation to:(CGPoint)endLocation additionalItemRequestLocations:(ProgressToCGPointValueMap)additionalItemRequestLocations
>-{
>-    NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter];
>-    [defaultCenter addObserver:self selector:@selector(simulateAllTouchesCanceled:) name:TestWebKitAPISimulateCancelAllTouchesNotificationName object:nil];
>-
>-    if (_shouldEnsureUIApplication)
>-        UIApplicationInstantiateSingleton([DataInteractionSimulatorApplication class]);
>-
>-    [self _resetSimulatedState];
>-
>-    if (additionalItemRequestLocations)
>-        _remainingAdditionalItemRequestLocationsByProgress = adoptNS([additionalItemRequestLocations mutableCopy]);
>-
>-    RetainPtr<DataInteractionSimulator> strongSelf = self;
>-    for (NSString *eventName in dataInteractionEventNames()) {
>-        DataInteractionSimulator *weakSelf = strongSelf.get();
>-        [weakSelf->_webView performAfterReceivingMessage:eventName action:^() {
>-            [weakSelf->_observedEventNames addObject:eventName];
>-        }];
>-    }
>-
>-    _startLocation = startLocation;
>-    _endLocation = endLocation;
>-
>-    if (self.externalItemProviders.count) {
>-        _dropSession = adoptNS([[MockDropSession alloc] initWithProviders:self.externalItemProviders location:_startLocation window:[_webView window] allowMove:self.shouldAllowMoveOperation]);
>-        _phase = DataInteractionBegan;
>-        [self _advanceProgress];
>-    } else {
>-        _dragSession = adoptNS([[MockDragSession alloc] initWithWindow:[_webView window] allowMove:self.shouldAllowMoveOperation]);
>-        [_dragSession setMockLocationInWindow:_startLocation];
>-        [(id <UIDragInteractionDelegate_ForWebKitOnly>)[_webView dragInteractionDelegate] _dragInteraction:[_webView dragInteraction] prepareForSession:_dragSession.get() completion:^() {
>-            DataInteractionSimulator *weakSelf = strongSelf.get();
>-            if (weakSelf->_phase == DataInteractionCancelled)
>-                return;
>-
>-            weakSelf->_phase = DataInteractionBeginning;
>-            [weakSelf _advanceProgress];
>-        }];
>-    }
>-
>-    Util::run(&_isDoneWithCurrentRun);
>-    [_webView clearMessageHandlers:dataInteractionEventNames()];
>-    _finalSelectionRects = [_webView selectionRectsAfterPresentationUpdate];
>-
>-    [defaultCenter removeObserver:self];
>-}
>-
>-- (NSArray *)finalSelectionRects
>-{
>-    return _finalSelectionRects.get();
>-}
>-
>-- (void)_concludeDataInteractionAndPerformOperationIfNecessary
>-{
>-    _lastKnownDragCaretRect = [_webView _dragCaretRect];
>-    auto operation = [_currentDropProposal operation];
>-    if (operation != UIDropOperationCancel && operation != UIDropOperationForbidden) {
>-        [[_webView dropInteractionDelegate] dropInteraction:[_webView dropInteraction] performDrop:_dropSession.get()];
>-        _phase = DataInteractionPerforming;
>-    } else {
>-        _isDoneWithCurrentRun = YES;
>-        _phase = DataInteractionCancelled;
>-    }
>-
>-    [[_webView dropInteractionDelegate] dropInteraction:[_webView dropInteraction] sessionDidEnd:_dropSession.get()];
>-
>-    if (_dragSession)
>-        [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] session:_dragSession.get() didEndWithOperation:operation];
>-}
>-
>-- (void)_enqueuePendingAdditionalItemRequestLocations
>-{
>-    NSMutableArray *progressValuesToRemove = [NSMutableArray array];
>-    for (NSNumber *progressValue in _remainingAdditionalItemRequestLocationsByProgress.get()) {
>-        double progress = progressValue.doubleValue;
>-        if (progress > _currentProgress)
>-            continue;
>-        [progressValuesToRemove addObject:progressValue];
>-        [_queuedAdditionalItemRequestLocations addObject:[_remainingAdditionalItemRequestLocationsByProgress objectForKey:progressValue]];
>-    }
>-
>-    for (NSNumber *progressToRemove in progressValuesToRemove)
>-        [_remainingAdditionalItemRequestLocationsByProgress removeObjectForKey:progressToRemove];
>-}
>-
>-- (BOOL)_sendQueuedAdditionalItemRequest
>-{
>-    if (![_queuedAdditionalItemRequestLocations count])
>-        return NO;
>-
>-    RetainPtr<NSValue> requestLocationValue = [_queuedAdditionalItemRequestLocations objectAtIndex:0];
>-    [_queuedAdditionalItemRequestLocations removeObjectAtIndex:0];
>-
>-    auto requestLocation = [[_webView window] convertPoint:[requestLocationValue CGPointValue] toView:_webView.get()];
>-    [(id <UIDragInteractionDelegate_Proposed_SPI_33146803>)[_webView dragInteractionDelegate] _dragInteraction:[_webView dragInteraction] itemsForAddingToSession:_dragSession.get() withTouchAtPoint:requestLocation completion:[dragSession = _dragSession, dropSession = _dropSession] (NSArray *items) {
>-        [dragSession addItems:items];
>-        [dropSession addItems:items];
>-    }];
>-    return YES;
>-}
>-
>-- (void)_advanceProgress
>-{
>-    [self _enqueuePendingAdditionalItemRequestLocations];
>-    if ([self _sendQueuedAdditionalItemRequest]) {
>-        [self _scheduleAdvanceProgress];
>-        return;
>-    }
>-
>-    _lastKnownDragCaretRect = [_webView _dragCaretRect];
>-    _currentProgress += progressIncrementStep;
>-    CGPoint locationInWindow = self._currentLocation;
>-    [_dragSession setMockLocationInWindow:locationInWindow];
>-    [_dropSession setMockLocationInWindow:locationInWindow];
>-
>-    if (_currentProgress >= 1) {
>-        _currentProgress = 1;
>-        [self _concludeDataInteractionAndPerformOperationIfNecessary];
>-        return;
>-    }
>-
>-    switch (_phase) {
>-    case DataInteractionBeginning: {
>-        NSMutableArray<UIItemProvider *> *itemProviders = [NSMutableArray array];
>-        NSArray *items = [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] itemsForBeginningSession:_dragSession.get()];
>-        if (!items.count) {
>-            _phase = DataInteractionCancelled;
>-            _currentProgress = 1;
>-            _isDoneWithCurrentRun = true;
>-            return;
>-        }
>-
>-        for (UIDragItem *item in items) {
>-            [itemProviders addObject:item.itemProvider];
>-            UITargetedDragPreview *liftPreview = [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] previewForLiftingItem:item session:_dragSession.get()];
>-            EXPECT_TRUE(!!liftPreview);
>-            if (liftPreview)
>-                [_liftPreviews addObject:liftPreview];
>-        }
>-
>-        _dropSession = adoptNS([[MockDropSession alloc] initWithProviders:itemProviders location:self._currentLocation window:[_webView window] allowMove:self.shouldAllowMoveOperation]);
>-        [_dragSession setItems:items];
>-        _sourceItemProviders = itemProviders;
>-        if (self.showCustomActionSheetBlock) {
>-            // Defer progress until the custom action sheet is dismissed.
>-            auto startLocationInView = [[_webView window] convertPoint:_startLocation toView:_webView.get()];
>-            [_webView _simulateLongPressActionAtLocation:startLocationInView];
>-            return;
>-        }
>-
>-        [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] sessionWillBegin:_dragSession.get()];
>-
>-        RetainPtr<WKWebView> retainedWebView = _webView;
>-        dispatch_async(dispatch_get_main_queue(), ^() {
>-            [retainedWebView resignFirstResponder];
>-        });
>-
>-        _phase = DataInteractionBegan;
>-        break;
>-    }
>-    case DataInteractionBegan:
>-        [[_webView dropInteractionDelegate] dropInteraction:[_webView dropInteraction] sessionDidEnter:_dropSession.get()];
>-        _phase = DataInteractionEntered;
>-        break;
>-    case DataInteractionEntered: {
>-        _currentDropProposal = [[_webView dropInteractionDelegate] dropInteraction:[_webView dropInteraction] sessionDidUpdate:_dropSession.get()];
>-        if (![self shouldAllowMoveOperation] && [_currentDropProposal operation] == UIDropOperationMove)
>-            _currentDropProposal = adoptNS([[UIDropProposal alloc] initWithDropOperation:UIDropOperationCancel]);
>-        break;
>-    }
>-    default:
>-        break;
>-    }
>-
>-    [self _scheduleAdvanceProgress];
>-}
>-
>-- (CGPoint)_currentLocation
>-{
>-    CGFloat distanceX = _endLocation.x - _startLocation.x;
>-    CGFloat distanceY = _endLocation.y - _startLocation.y;
>-    return CGPointMake(_startLocation.x + _currentProgress * distanceX, _startLocation.y + _currentProgress * distanceY);
>-}
>-
>-- (void)_scheduleAdvanceProgress
>-{
>-    [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(_advanceProgress) object:nil];
>-    [self performSelector:@selector(_advanceProgress) withObject:nil afterDelay:progressTimeStep];
>-}
>-
>-- (NSArray *)sourceItemProviders
>-{
>-    return _sourceItemProviders.get();
>-}
>-
>-- (NSArray *)externalItemProviders
>-{
>-    return _externalItemProviders.get();
>-}
>-
>-- (void)setExternalItemProviders:(NSArray *)externalItemProviders
>-{
>-    _externalItemProviders = adoptNS([externalItemProviders copy]);
>-}
>-
>-- (DataInteractionPhase)phase
>-{
>-    return _phase;
>-}
>-
>-- (NSArray<UITargetedDragPreview *> *)liftPreviews
>-{
>-    return _liftPreviews.get();
>-}
>-
>-- (CGRect)lastKnownDragCaretRect
>-{
>-    return _lastKnownDragCaretRect;
>-}
>-
>-- (void)waitForInputSession
>-{
>-    _isDoneWaitingForInputSession = false;
>-
>-    // Waiting for an input session implies that we should allow input sessions to begin.
>-    self.allowsFocusToStartInputSession = YES;
>-
>-    Util::run(&_isDoneWaitingForInputSession);
>-}
>-
>-- (NSArray<_WKAttachment *> *)insertedAttachments
>-{
>-    return _insertedAttachments.get();
>-}
>-
>-- (NSArray<_WKAttachment *> *)removedAttachments
>-{
>-    return _removedAttachments.get();
>-}
>-
>-- (void)endDataTransfer
>-{
>-    [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] sessionDidTransferItems:_dragSession.get()];
>-}
>-
>-#pragma mark - WKUIDelegatePrivate
>-
>-- (void)_webView:(WKWebView *)webView dataInteractionOperationWasHandled:(BOOL)handled forSession:(id)session itemProviders:(NSArray<UIItemProvider *> *)itemProviders
>-{
>-    _isDoneWithCurrentRun = true;
>-
>-    if (self.dataInteractionOperationCompletionBlock)
>-        self.dataInteractionOperationCompletionBlock(handled, itemProviders);
>-}
>-
>-- (NSUInteger)_webView:(WKWebView *)webView willUpdateDataInteractionOperationToOperation:(NSUInteger)operation forSession:(id)session
>-{
>-    return self.overrideDataInteractionOperationBlock ? self.overrideDataInteractionOperationBlock(operation, session) : operation;
>-}
>-
>-- (NSArray *)_webView:(WKWebView *)webView adjustedDataInteractionItemProvidersForItemProvider:(UIItemProvider *)itemProvider representingObjects:(NSArray *)representingObjects additionalData:(NSDictionary *)additionalData
>-{
>-    return self.convertItemProvidersBlock ? self.convertItemProvidersBlock(itemProvider, representingObjects, additionalData) : @[ itemProvider ];
>-}
>-
>-- (BOOL)_webView:(WKWebView *)webView showCustomSheetForElement:(_WKActivatedElementInfo *)element
>-{
>-    if (!self.showCustomActionSheetBlock)
>-        return NO;
>-
>-    RetainPtr<DataInteractionSimulator> strongSelf = self;
>-    dispatch_async(dispatch_get_main_queue(), ^() {
>-        DataInteractionSimulator *weakSelf = strongSelf.get();
>-        [[weakSelf->_webView dragInteractionDelegate] dragInteraction:[weakSelf->_webView dragInteraction] sessionWillBegin:weakSelf->_dragSession.get()];
>-        weakSelf->_phase = DataInteractionBegan;
>-        [weakSelf _scheduleAdvanceProgress];
>-    });
>-
>-    return self.showCustomActionSheetBlock(element);
>-}
>-
>-- (NSArray<UIDragItem *> *)_webView:(WKWebView *)webView willPerformDropWithSession:(id <UIDropSession>)session
>-{
>-    return self.overridePerformDropBlock ? self.overridePerformDropBlock(session) : session.items;
>-}
>-
>-- (void)_webView:(WKWebView *)webView didInsertAttachment:(_WKAttachment *)attachment
>-{
>-    [_insertedAttachments addObject:attachment];
>-}
>-
>-- (void)_webView:(WKWebView *)webView didRemoveAttachment:(_WKAttachment *)attachment
>-{
>-    [_removedAttachments addObject:attachment];
>-}
>-
>-#pragma mark - _WKInputDelegate
>-
>-- (BOOL)_webView:(WKWebView *)webView focusShouldStartInputSession:(id <_WKFocusedElementInfo>)info
>-{
>-    return _allowsFocusToStartInputSession;
>-}
>-
>-- (void)_webView:(WKWebView *)webView didStartInputSession:(id <_WKFormInputSession>)inputSession
>-{
>-    _isDoneWaitingForInputSession = true;
>-}
>-
>-@end
>-
>-#endif // ENABLE(DATA_INTERACTION)
>diff --git a/Tools/TestWebKitAPI/ios/DraggingSimulatorIOS.mm b/Tools/TestWebKitAPI/ios/DraggingSimulatorIOS.mm
>new file mode 100644
>index 0000000000000000000000000000000000000000..6666bd703d5954d2d1b93a40c943e616437b9c0f
>--- /dev/null
>+++ b/Tools/TestWebKitAPI/ios/DraggingSimulatorIOS.mm
>@@ -0,0 +1,689 @@
>+/*
>+ * Copyright (C) 2017 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#include "config.h"
>+#include "DraggingSimulator.h"
>+
>+#if ENABLE(DRAG_SUPPORT) && PLATFORM(IOS)
>+
>+#import "InstanceMethodSwizzler.h"
>+#import "PlatformUtilities.h"
>+#import "UIKitSPI.h"
>+
>+#import <UIKit/UIDragInteraction.h>
>+#import <UIKit/UIDragItem.h>
>+#import <UIKit/UIInteraction.h>
>+#import <WebKit/WKWebViewPrivate.h>
>+#import <WebKit/_WKFocusedElementInfo.h>
>+#import <WebKit/_WKFormInputSession.h>
>+#import <wtf/RetainPtr.h>
>+#import <wtf/SoftLinking.h>
>+
>+SOFT_LINK_FRAMEWORK(UIKit)
>+SOFT_LINK(UIKit, UIApplicationInstantiateSingleton, void, (Class singletonClass), (singletonClass))
>+
>+using namespace TestWebKitAPI;
>+
>+@implementation WKWebView (DragAndDropTesting)
>+
>+- (UIView *)_dragDropInteractionView
>+{
>+    return [self valueForKey:@"_currentContentView"];
>+}
>+
>+- (id <UIDropInteractionDelegate>)dropInteractionDelegate
>+{
>+    return (id <UIDropInteractionDelegate>)self._dragDropInteractionView;
>+}
>+
>+- (id <UIDragInteractionDelegate>)dragInteractionDelegate
>+{
>+    return (id <UIDragInteractionDelegate>)self._dragDropInteractionView;
>+}
>+
>+- (UIDropInteraction *)dropInteraction
>+{
>+    UIView *interactionView = self._dragDropInteractionView;
>+    for (id <UIInteraction> interaction in interactionView.interactions) {
>+        if ([interaction isKindOfClass:[UIDropInteraction class]])
>+            return (UIDropInteraction *)interaction;
>+    }
>+    return nil;
>+}
>+
>+- (UIDragInteraction *)dragInteraction
>+{
>+    UIView *interactionView = self._dragDropInteractionView;
>+    for (id <UIInteraction> interaction in interactionView.interactions) {
>+        if ([interaction isKindOfClass:[UIDragInteraction class]])
>+            return (UIDragInteraction *)interaction;
>+    }
>+    return nil;
>+}
>+
>+@end
>+
>+@implementation MockDragDropSession
>+
>+- (instancetype)initWithItems:(NSArray <UIDragItem *>*)items location:(CGPoint)locationInWindow window:(UIWindow *)window allowMove:(BOOL)allowMove
>+{
>+    if (self = [super init]) {
>+        _mockItems = items;
>+        _mockLocationInWindow = locationInWindow;
>+        _window = window;
>+        _allowMove = allowMove;
>+    }
>+    return self;
>+}
>+
>+- (BOOL)allowsMoveOperation
>+{
>+    return _allowMove;
>+}
>+
>+- (BOOL)isRestrictedToDraggingApplication
>+{
>+    return NO;
>+}
>+
>+- (BOOL)hasItemsConformingToTypeIdentifiers:(NSArray<NSString *> *)typeIdentifiers
>+{
>+    for (NSString *typeIdentifier in typeIdentifiers) {
>+        BOOL hasItemConformingToType = NO;
>+        for (UIDragItem *item in self.items)
>+            hasItemConformingToType |= [[item.itemProvider registeredTypeIdentifiers] containsObject:typeIdentifier];
>+        if (!hasItemConformingToType)
>+            return NO;
>+    }
>+    return YES;
>+}
>+
>+- (BOOL)canLoadObjectsOfClass:(Class<UIItemProviderReading>)aClass
>+{
>+    for (UIDragItem *item in self.items) {
>+        if ([item.itemProvider canLoadObjectOfClass:aClass])
>+            return YES;
>+    }
>+    return NO;
>+}
>+
>+- (BOOL)canLoadObjectsOfClasses:(NSArray<Class<UIItemProviderReading>> *)classes
>+{
>+    for (Class<UIItemProviderReading> aClass in classes) {
>+        BOOL canLoad = NO;
>+        for (UIDragItem *item in self.items)
>+            canLoad |= [item.itemProvider canLoadObjectOfClass:aClass];
>+        if (!canLoad)
>+            return NO;
>+    }
>+    return YES;
>+}
>+
>+- (NSArray<UIDragItem *> *)items
>+{
>+    return _mockItems.get();
>+}
>+
>+- (void)setItems:(NSArray<UIDragItem *> *)items
>+{
>+    _mockItems = items;
>+}
>+
>+- (void)addItems:(NSArray<UIDragItem *> *)items
>+{
>+    if (![items count])
>+        return;
>+
>+    if (![_mockItems count])
>+        _mockItems = items;
>+    else
>+        _mockItems = [_mockItems arrayByAddingObjectsFromArray:items];
>+}
>+
>+- (CGPoint)locationInView:(UIView *)view
>+{
>+    return [_window convertPoint:_mockLocationInWindow toView:view];
>+}
>+
>+@end
>+
>+@implementation MockDropSession
>+
>+- (instancetype)initWithProviders:(NSArray<UIItemProvider *> *)providers location:(CGPoint)locationInWindow window:(UIWindow *)window allowMove:(BOOL)allowMove
>+{
>+    auto items = adoptNS([[NSMutableArray alloc] init]);
>+    for (UIItemProvider *itemProvider in providers)
>+        [items addObject:[[[UIDragItem alloc] initWithItemProvider:itemProvider] autorelease]];
>+
>+    return [super initWithItems:items.get() location:locationInWindow window:window allowMove:allowMove];
>+}
>+
>+- (BOOL)isLocal
>+{
>+    return YES;
>+}
>+
>+- (NSProgress *)progress
>+{
>+    return [NSProgress discreteProgressWithTotalUnitCount:100];
>+}
>+
>+- (void)setProgressIndicatorStyle:(UIDropSessionProgressIndicatorStyle)progressIndicatorStyle
>+{
>+}
>+
>+- (UIDropSessionProgressIndicatorStyle)progressIndicatorStyle
>+{
>+    return UIDropSessionProgressIndicatorStyleNone;
>+}
>+
>+- (NSUInteger)operationMask
>+{
>+    return 0;
>+}
>+
>+- (id <UIDragSession>)localDragSession
>+{
>+    return nil;
>+}
>+
>+- (BOOL)hasItemsConformingToTypeIdentifier:(NSString *)typeIdentifier
>+{
>+    ASSERT_NOT_REACHED();
>+    return NO;
>+}
>+
>+- (BOOL)canCreateItemsOfClass:(Class<UIItemProviderReading>)aClass
>+{
>+    ASSERT_NOT_REACHED();
>+    return NO;
>+}
>+
>+- (NSProgress *)loadObjectsOfClass:(Class<NSItemProviderReading>)aClass completion:(void(^)(NSArray<__kindof id <NSItemProviderReading>> *objects))completion
>+{
>+    ASSERT_NOT_REACHED();
>+    return nil;
>+}
>+
>+@end
>+
>+@implementation MockDragSession {
>+    RetainPtr<id> _localContext;
>+}
>+
>+- (instancetype)initWithWindow:(UIWindow *)window allowMove:(BOOL)allowMove
>+{
>+    return [super initWithItems:@[ ] location:CGPointZero window:window allowMove:allowMove];
>+}
>+
>+- (NSUInteger)localOperationMask
>+{
>+    ASSERT_NOT_REACHED();
>+    return 0;
>+}
>+
>+- (NSUInteger)externalOperationMask
>+{
>+    ASSERT_NOT_REACHED();
>+    return 0;
>+}
>+
>+- (id)session
>+{
>+    return nil;
>+}
>+
>+- (id)localContext
>+{
>+    return _localContext.get();
>+}
>+
>+- (void)setLocalContext:(id)localContext
>+{
>+    _localContext = localContext;
>+}
>+
>+@end
>+
>+static double progressIncrementStep = 0.033;
>+static double progressTimeStep = 0.016;
>+static NSString *TestWebKitAPISimulateCancelAllTouchesNotificationName = @"TestWebKitAPISimulateCancelAllTouchesNotificationName";
>+
>+static NSArray *dragAndDropEventNames()
>+{
>+    static NSArray *eventNames = nil;
>+    static dispatch_once_t onceToken;
>+    dispatch_once(&onceToken, ^() {
>+        eventNames = @[ @"dragenter", @"dragover", @"drop", @"dragleave", @"dragstart" ];
>+    });
>+    return eventNames;
>+}
>+
>+@interface DraggingSimulatorApplication : UIApplication
>+@end
>+
>+@implementation DraggingSimulatorApplication
>+- (void)_cancelAllTouches
>+{
>+    [[NSNotificationCenter defaultCenter] postNotificationName:TestWebKitAPISimulateCancelAllTouchesNotificationName object:nil];
>+}
>+@end
>+
>+@implementation DraggingSimulator {
>+    RetainPtr<TestWKWebView> _webView;
>+    RetainPtr<MockDragSession> _dragSession;
>+    RetainPtr<MockDropSession> _dropSession;
>+    RetainPtr<NSMutableArray> _observedEventNames;
>+    RetainPtr<NSArray> _externalItemProviders;
>+    RetainPtr<NSArray *> _sourceItemProviders;
>+    RetainPtr<NSArray *> _finalSelectionRects;
>+    CGPoint _startLocation;
>+    CGPoint _endLocation;
>+    CGRect _lastKnownDragCaretRect;
>+
>+    RetainPtr<NSMutableDictionary<NSNumber *, NSValue *>>_remainingAdditionalItemRequestLocationsByProgress;
>+    RetainPtr<NSMutableArray<NSValue *>>_queuedAdditionalItemRequestLocations;
>+    RetainPtr<NSMutableArray<UITargetedDragPreview *>> _liftPreviews;
>+
>+    RetainPtr<NSMutableArray<_WKAttachment *>> _insertedAttachments;
>+    RetainPtr<NSMutableArray<_WKAttachment *>> _removedAttachments;
>+
>+    bool _isDoneWaitingForInputSession;
>+    double _currentProgress;
>+    bool _isDoneWithCurrentRun;
>+    DragAndDropPhase _phase;
>+
>+    RetainPtr<UIDropProposal> _currentDropProposal;
>+}
>+
>+- (instancetype)initWithWebView:(TestWKWebView *)webView
>+{
>+    if (self = [super init]) {
>+        _webView = webView;
>+        _shouldEnsureUIApplication = NO;
>+        _shouldAllowMoveOperation = YES;
>+        _isDoneWaitingForInputSession = true;
>+        [_webView setUIDelegate:self];
>+        [_webView _setInputDelegate:self];
>+    }
>+    return self;
>+}
>+
>+- (void)dealloc
>+{
>+    if ([_webView UIDelegate] == self)
>+        [_webView setUIDelegate:nil];
>+
>+    if ([_webView _inputDelegate] == self)
>+        [_webView _setInputDelegate:nil];
>+
>+    [super dealloc];
>+}
>+
>+- (void)_resetSimulatedState
>+{
>+    _phase = DragAndDropPhaseBeginning;
>+    _currentProgress = 0;
>+    _isDoneWithCurrentRun = false;
>+    _observedEventNames = adoptNS([[NSMutableArray alloc] init]);
>+    _insertedAttachments = adoptNS([[NSMutableArray alloc] init]);
>+    _removedAttachments = adoptNS([[NSMutableArray alloc] init]);
>+    _finalSelectionRects = @[ ];
>+    _dragSession = nil;
>+    _dropSession = nil;
>+    _currentDropProposal = nil;
>+    _lastKnownDragCaretRect = CGRectZero;
>+    _remainingAdditionalItemRequestLocationsByProgress = nil;
>+    _queuedAdditionalItemRequestLocations = adoptNS([[NSMutableArray alloc] init]);
>+    _liftPreviews = adoptNS([[NSMutableArray alloc] init]);
>+}
>+
>+- (NSArray *)observedEventNames
>+{
>+    return _observedEventNames.get();
>+}
>+
>+- (void)simulateAllTouchesCanceled:(NSNotification *)notification
>+{
>+    [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(_advanceProgress) object:nil];
>+    _phase = DragAndDropPhaseCancelled;
>+    _currentProgress = 1;
>+    _isDoneWithCurrentRun = true;
>+    if (_dragSession)
>+        [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] session:_dragSession.get() didEndWithOperation:UIDropOperationCancel];
>+}
>+
>+- (void)runFrom:(CGPoint)startLocation to:(CGPoint)endLocation
>+{
>+    [self runFrom:startLocation to:endLocation additionalItemRequestLocations:nil];
>+}
>+
>+- (void)runFrom:(CGPoint)startLocation to:(CGPoint)endLocation additionalItemRequestLocations:(ProgressToCGPointValueMap)additionalItemRequestLocations
>+{
>+    NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter];
>+    [defaultCenter addObserver:self selector:@selector(simulateAllTouchesCanceled:) name:TestWebKitAPISimulateCancelAllTouchesNotificationName object:nil];
>+
>+    if (_shouldEnsureUIApplication)
>+        UIApplicationInstantiateSingleton([DraggingSimulatorApplication class]);
>+
>+    [self _resetSimulatedState];
>+
>+    if (additionalItemRequestLocations)
>+        _remainingAdditionalItemRequestLocationsByProgress = adoptNS([additionalItemRequestLocations mutableCopy]);
>+
>+    for (NSString *eventName in dragAndDropEventNames()) {
>+        [_webView performAfterReceivingMessage:eventName action:[strongSelf = retainPtr(self), name = retainPtr(eventName)] {
>+            [strongSelf->_observedEventNames addObject:name.get()];
>+        }];
>+    }
>+
>+    _startLocation = startLocation;
>+    _endLocation = endLocation;
>+
>+    if (self.externalItemProviders.count) {
>+        _dropSession = adoptNS([[MockDropSession alloc] initWithProviders:self.externalItemProviders location:_startLocation window:[_webView window] allowMove:self.shouldAllowMoveOperation]);
>+        _phase = DragAndDropPhaseBegan;
>+        [self _advanceProgress];
>+    } else {
>+        _dragSession = adoptNS([[MockDragSession alloc] initWithWindow:[_webView window] allowMove:self.shouldAllowMoveOperation]);
>+        [_dragSession setMockLocationInWindow:_startLocation];
>+        [(id <UIDragInteractionDelegate_ForWebKitOnly>)[_webView dragInteractionDelegate] _dragInteraction:[_webView dragInteraction] prepareForSession:_dragSession.get() completion:[strongSelf = retainPtr(self)] {
>+            if (strongSelf->_phase == DragAndDropPhaseCancelled)
>+                return;
>+
>+            strongSelf->_phase = DragAndDropPhaseBeginning;
>+            [strongSelf _advanceProgress];
>+        }];
>+    }
>+
>+    Util::run(&_isDoneWithCurrentRun);
>+    [_webView clearMessageHandlers:dragAndDropEventNames()];
>+    _finalSelectionRects = [_webView selectionRectsAfterPresentationUpdate];
>+
>+    [defaultCenter removeObserver:self];
>+}
>+
>+- (NSArray *)finalSelectionRects
>+{
>+    return _finalSelectionRects.get();
>+}
>+
>+- (void)_concludeDropAndPerformOperationIfNecessary
>+{
>+    _lastKnownDragCaretRect = [_webView _dragCaretRect];
>+    auto operation = [_currentDropProposal operation];
>+    if (operation != UIDropOperationCancel && operation != UIDropOperationForbidden) {
>+        [[_webView dropInteractionDelegate] dropInteraction:[_webView dropInteraction] performDrop:_dropSession.get()];
>+        _phase = DragAndDropPhasePerformingDrop;
>+    } else {
>+        _isDoneWithCurrentRun = YES;
>+        _phase = DragAndDropPhaseCancelled;
>+    }
>+
>+    [[_webView dropInteractionDelegate] dropInteraction:[_webView dropInteraction] sessionDidEnd:_dropSession.get()];
>+
>+    if (_dragSession)
>+        [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] session:_dragSession.get() didEndWithOperation:operation];
>+}
>+
>+- (void)_enqueuePendingAdditionalItemRequestLocations
>+{
>+    NSMutableArray *progressValuesToRemove = [NSMutableArray array];
>+    for (NSNumber *progressValue in _remainingAdditionalItemRequestLocationsByProgress.get()) {
>+        double progress = progressValue.doubleValue;
>+        if (progress > _currentProgress)
>+            continue;
>+        [progressValuesToRemove addObject:progressValue];
>+        [_queuedAdditionalItemRequestLocations addObject:[_remainingAdditionalItemRequestLocationsByProgress objectForKey:progressValue]];
>+    }
>+
>+    for (NSNumber *progressToRemove in progressValuesToRemove)
>+        [_remainingAdditionalItemRequestLocationsByProgress removeObjectForKey:progressToRemove];
>+}
>+
>+- (BOOL)_sendQueuedAdditionalItemRequest
>+{
>+    if (![_queuedAdditionalItemRequestLocations count])
>+        return NO;
>+
>+    RetainPtr<NSValue> requestLocationValue = [_queuedAdditionalItemRequestLocations objectAtIndex:0];
>+    [_queuedAdditionalItemRequestLocations removeObjectAtIndex:0];
>+
>+    auto requestLocation = [[_webView window] convertPoint:[requestLocationValue CGPointValue] toView:_webView.get()];
>+    [(id <UIDragInteractionDelegate_Proposed_SPI_33146803>)[_webView dragInteractionDelegate] _dragInteraction:[_webView dragInteraction] itemsForAddingToSession:_dragSession.get() withTouchAtPoint:requestLocation completion:[dragSession = _dragSession, dropSession = _dropSession] (NSArray *items) {
>+        [dragSession addItems:items];
>+        [dropSession addItems:items];
>+    }];
>+    return YES;
>+}
>+
>+- (void)_advanceProgress
>+{
>+    [self _enqueuePendingAdditionalItemRequestLocations];
>+    if ([self _sendQueuedAdditionalItemRequest]) {
>+        [self _scheduleAdvanceProgress];
>+        return;
>+    }
>+
>+    _lastKnownDragCaretRect = [_webView _dragCaretRect];
>+    _currentProgress += progressIncrementStep;
>+    CGPoint locationInWindow = self._currentLocation;
>+    [_dragSession setMockLocationInWindow:locationInWindow];
>+    [_dropSession setMockLocationInWindow:locationInWindow];
>+
>+    if (_currentProgress >= 1) {
>+        _currentProgress = 1;
>+        [self _concludeDropAndPerformOperationIfNecessary];
>+        return;
>+    }
>+
>+    switch (_phase) {
>+    case DragAndDropPhaseBeginning: {
>+        NSMutableArray<UIItemProvider *> *itemProviders = [NSMutableArray array];
>+        NSArray *items = [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] itemsForBeginningSession:_dragSession.get()];
>+        if (!items.count) {
>+            _phase = DragAndDropPhaseCancelled;
>+            _currentProgress = 1;
>+            _isDoneWithCurrentRun = true;
>+            return;
>+        }
>+
>+        for (UIDragItem *item in items) {
>+            [itemProviders addObject:item.itemProvider];
>+            UITargetedDragPreview *liftPreview = [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] previewForLiftingItem:item session:_dragSession.get()];
>+            EXPECT_TRUE(!!liftPreview);
>+            if (liftPreview)
>+                [_liftPreviews addObject:liftPreview];
>+        }
>+
>+        _dropSession = adoptNS([[MockDropSession alloc] initWithProviders:itemProviders location:self._currentLocation window:[_webView window] allowMove:self.shouldAllowMoveOperation]);
>+        [_dragSession setItems:items];
>+        _sourceItemProviders = itemProviders;
>+        if (self.showCustomActionSheetBlock) {
>+            // Defer progress until the custom action sheet is dismissed.
>+            auto startLocationInView = [[_webView window] convertPoint:_startLocation toView:_webView.get()];
>+            [_webView _simulateLongPressActionAtLocation:startLocationInView];
>+            return;
>+        }
>+
>+        [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] sessionWillBegin:_dragSession.get()];
>+
>+        RetainPtr<WKWebView> retainedWebView = _webView;
>+        dispatch_async(dispatch_get_main_queue(), ^() {
>+            [retainedWebView resignFirstResponder];
>+        });
>+
>+        _phase = DragAndDropPhaseBegan;
>+        break;
>+    }
>+    case DragAndDropPhaseBegan:
>+        [[_webView dropInteractionDelegate] dropInteraction:[_webView dropInteraction] sessionDidEnter:_dropSession.get()];
>+        _phase = DragAndDropPhaseEntered;
>+        break;
>+    case DragAndDropPhaseEntered: {
>+        _currentDropProposal = [[_webView dropInteractionDelegate] dropInteraction:[_webView dropInteraction] sessionDidUpdate:_dropSession.get()];
>+        if (![self shouldAllowMoveOperation] && [_currentDropProposal operation] == UIDropOperationMove)
>+            _currentDropProposal = adoptNS([[UIDropProposal alloc] initWithDropOperation:UIDropOperationCancel]);
>+        break;
>+    }
>+    default:
>+        break;
>+    }
>+
>+    [self _scheduleAdvanceProgress];
>+}
>+
>+- (CGPoint)_currentLocation
>+{
>+    CGFloat distanceX = _endLocation.x - _startLocation.x;
>+    CGFloat distanceY = _endLocation.y - _startLocation.y;
>+    return CGPointMake(_startLocation.x + _currentProgress * distanceX, _startLocation.y + _currentProgress * distanceY);
>+}
>+
>+- (void)_scheduleAdvanceProgress
>+{
>+    [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(_advanceProgress) object:nil];
>+    [self performSelector:@selector(_advanceProgress) withObject:nil afterDelay:progressTimeStep];
>+}
>+
>+- (NSArray *)sourceItemProviders
>+{
>+    return _sourceItemProviders.get();
>+}
>+
>+- (NSArray *)externalItemProviders
>+{
>+    return _externalItemProviders.get();
>+}
>+
>+- (void)setExternalItemProviders:(NSArray *)externalItemProviders
>+{
>+    _externalItemProviders = adoptNS([externalItemProviders copy]);
>+}
>+
>+- (DragAndDropPhase)phase
>+{
>+    return _phase;
>+}
>+
>+- (NSArray<UITargetedDragPreview *> *)liftPreviews
>+{
>+    return _liftPreviews.get();
>+}
>+
>+- (CGRect)lastKnownDragCaretRect
>+{
>+    return _lastKnownDragCaretRect;
>+}
>+
>+- (void)waitForInputSession
>+{
>+    _isDoneWaitingForInputSession = false;
>+
>+    // Waiting for an input session implies that we should allow input sessions to begin.
>+    self.allowsFocusToStartInputSession = YES;
>+
>+    Util::run(&_isDoneWaitingForInputSession);
>+}
>+
>+- (NSArray<_WKAttachment *> *)insertedAttachments
>+{
>+    return _insertedAttachments.get();
>+}
>+
>+- (NSArray<_WKAttachment *> *)removedAttachments
>+{
>+    return _removedAttachments.get();
>+}
>+
>+- (void)endDataTransfer
>+{
>+    [[_webView dragInteractionDelegate] dragInteraction:[_webView dragInteraction] sessionDidTransferItems:_dragSession.get()];
>+}
>+
>+#pragma mark - WKUIDelegatePrivate
>+
>+- (void)_webView:(WKWebView *)webView dataInteractionOperationWasHandled:(BOOL)handled forSession:(id)session itemProviders:(NSArray<UIItemProvider *> *)itemProviders
>+{
>+    _isDoneWithCurrentRun = true;
>+
>+    if (self.dropCompletionBlock)
>+        self.dropCompletionBlock(handled, itemProviders);
>+}
>+
>+- (NSUInteger)_webView:(WKWebView *)webView willUpdateDataInteractionOperationToOperation:(NSUInteger)operation forSession:(id)session
>+{
>+    return self.overrideDragUpdateBlock ? self.overrideDragUpdateBlock(operation, session) : operation;
>+}
>+
>+- (NSArray *)_webView:(WKWebView *)webView adjustedDataInteractionItemProvidersForItemProvider:(UIItemProvider *)itemProvider representingObjects:(NSArray *)representingObjects additionalData:(NSDictionary *)additionalData
>+{
>+    return self.convertItemProvidersBlock ? self.convertItemProvidersBlock(itemProvider, representingObjects, additionalData) : @[ itemProvider ];
>+}
>+
>+- (BOOL)_webView:(WKWebView *)webView showCustomSheetForElement:(_WKActivatedElementInfo *)element
>+{
>+    if (!self.showCustomActionSheetBlock)
>+        return NO;
>+
>+    dispatch_async(dispatch_get_main_queue(), [strongSelf = retainPtr(self)] {
>+        [[strongSelf->_webView dragInteractionDelegate] dragInteraction:[strongSelf->_webView dragInteraction] sessionWillBegin:strongSelf->_dragSession.get()];
>+        strongSelf->_phase = DragAndDropPhaseBegan;
>+        [strongSelf _scheduleAdvanceProgress];
>+    });
>+
>+    return self.showCustomActionSheetBlock(element);
>+}
>+
>+- (NSArray<UIDragItem *> *)_webView:(WKWebView *)webView willPerformDropWithSession:(id <UIDropSession>)session
>+{
>+    return self.overridePerformDropBlock ? self.overridePerformDropBlock(session) : session.items;
>+}
>+
>+- (void)_webView:(WKWebView *)webView didInsertAttachment:(_WKAttachment *)attachment
>+{
>+    [_insertedAttachments addObject:attachment];
>+}
>+
>+- (void)_webView:(WKWebView *)webView didRemoveAttachment:(_WKAttachment *)attachment
>+{
>+    [_removedAttachments addObject:attachment];
>+}
>+
>+#pragma mark - _WKInputDelegate
>+
>+- (BOOL)_webView:(WKWebView *)webView focusShouldStartInputSession:(id <_WKFocusedElementInfo>)info
>+{
>+    return _allowsFocusToStartInputSession;
>+}
>+
>+- (void)_webView:(WKWebView *)webView didStartInputSession:(id <_WKFormInputSession>)inputSession
>+{
>+    _isDoneWaitingForInputSession = true;
>+}
>+
>+@end
>+
>+#endif // ENABLE(DRAG_SUPPORT) && PLATFORM(IOS)
>diff --git a/Tools/TestWebKitAPI/ios/UIKitSPI.h b/Tools/TestWebKitAPI/ios/UIKitSPI.h
>index 8edd052a0384b0c794f99ed707bf45a1e7290ff2..8ecf305efbe771438d024f770e95deec50d1f1d2 100644
>--- a/Tools/TestWebKitAPI/ios/UIKitSPI.h
>+++ b/Tools/TestWebKitAPI/ios/UIKitSPI.h
>@@ -39,7 +39,12 @@
> @protocol UIDragSession;
> @class UIDragInteraction;
> @class UIDragItem;
>+#import <UIKit/NSString+UIItemProvider.h>
>+#import <UIKit/NSURL+UIItemProvider.h>
> #import <UIKit/UIDragInteraction_Private.h>
>+#import <UIKit/UIImage+UIItemProvider.h>
>+#import <UIKit/UIItemProvider.h>
>+#import <UIKit/UIItemProvider_Private.h>
> #endif // ENABLE(DRAG_SUPPORT)
> 
> #else
>@@ -70,6 +75,42 @@ WTF_EXTERN_C_END
> - (void)handleKeyWebEvent:(WebEvent *)theEvent withCompletionHandler:(void (^)(WebEvent *, BOOL))completionHandler;
> @end
> 
>+#if ENABLE(DRAG_SUPPORT)
>+
>+@interface NSURL ()
>+@property (nonatomic, copy, setter=_setTitle:) NSString *_title;
>+@end
>+
>+#define UIItemProviderRepresentationOptionsVisibilityAll NSItemProviderRepresentationVisibilityAll
>+
>+@protocol UIItemProviderReading <NSItemProviderReading>
>+
>+@required
>+- (instancetype)initWithItemProviderData:(NSData *)data typeIdentifier:(NSString *)typeIdentifier error:(NSError **)outError;
>+
>+@end
>+
>+@protocol UIItemProviderWriting <NSItemProviderWriting>
>+
>+@required
>+- (NSProgress *)loadDataWithTypeIdentifier:(NSString *)typeIdentifier forItemProviderCompletionHandler:(void (^)(NSData *, NSError *))completionHandler;
>+
>+@end
>+
>+@interface NSAttributedString () <UIItemProviderReading, UIItemProviderWriting>
>+@end
>+@interface NSString () <UIItemProviderReading, UIItemProviderWriting>
>+@end
>+@interface NSURL () <UIItemProviderReading, UIItemProviderWriting>
>+@end
>+@interface UIImage () <UIItemProviderReading, UIItemProviderWriting>
>+@end
>+
>+@interface UIItemProvider : NSItemProvider
>+@end
>+
>+#endif
>+
> #endif
> 
> @protocol UITextInputTraits_Private_Proposed_SPI_34583628 <UITextInputPrivate>
>diff --git a/Tools/TestWebKitAPI/mac/DraggingSimulatorMac.mm b/Tools/TestWebKitAPI/mac/DraggingSimulatorMac.mm
>new file mode 100644
>index 0000000000000000000000000000000000000000..9ea3cc5da026db20a794808601732be8d6c22c2b
>--- /dev/null
>+++ b/Tools/TestWebKitAPI/mac/DraggingSimulatorMac.mm
>@@ -0,0 +1,76 @@
>+/*
>+ * Copyright (C) 2018 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#import "config.h"
>+#import "DraggingSimulator.h"
>+
>+@implementation DraggingSimulator {
>+    RetainPtr<TestWKWebView> _webView;
>+}
>+
>+- (instancetype)initWithWebView:(TestWKWebView *)webView
>+{
>+    if (self = [super init]) {
>+        _webView = webView;
>+        [_webView setUIDelegate:self];
>+        [_webView _setInputDelegate:self];
>+    }
>+    return self;
>+}
>+
>+- (void)dealloc
>+{
>+    if ([_webView UIDelegate] == self)
>+        [_webView setUIDelegate:nil];
>+
>+    if ([_webView _inputDelegate] == self)
>+        [_webView _setInputDelegate:nil];
>+
>+    [super dealloc];
>+}
>+
>+- (void)runFrom:(CGPoint)startLocation to:(CGPoint)endLocation
>+{
>+    // FIXME: Add a mechanism to simulate dragging on macOS.
>+    UNUSED_PARAM(startLocation);
>+    UNUSED_PARAM(endLocation);
>+}
>+
>+- (NSArray<_WKAttachment *> *)insertedAttachments
>+{
>+    return @[ ];
>+}
>+
>+- (NSArray<_WKAttachment *> *)removedAttachments
>+{
>+    return @[ ];
>+}
>+
>+- (DragAndDropPhase)phase
>+{
>+    return DragAndDropPhaseCancelled;
>+}
>+
>+@end

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Attachments on bug 188439: 346836 | 346837 | 346838 | 346849