Attachment 349375 Details for Bug 189494 – Added the missing expected.txt

[patch] Added the missing expected.txt

bug-189494-20180910204252.patch (text/plain), 78.87 KB, created by Ryosuke Niwa on 2018-09-10 20:42:53 PDT

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Creator: Ryosuke Niwa

Created: 2018-09-10 20:42:53 PDT

Size: 78.87 KB

patch

obsolete

>Index: LayoutTests/ChangeLog
>===================================================================
>--- LayoutTests/ChangeLog	(revision 235880)
>+++ LayoutTests/ChangeLog	(working copy)
>@@ -1,3 +1,15 @@
>+2018-09-10  Ryosuke Niwa  <rniwa@webkit.org>
>+
>+        Update shadow DOM and custom elements tests
>+        https://bugs.webkit.org/show_bug.cgi?id=189494
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Added a CRASH test expectation which hits a debug asssertion.
>+        The failure is tracked by the bug 189493.
>+
>+        * TestExpectations:
>+
> 2018-09-10  Truitt Savell  <tsavell@apple.com>
> 
>         Rebaseline test after https://trac.webkit.org/changeset/235866/webkit.
>Index: LayoutTests/TestExpectations
>===================================================================
>--- LayoutTests/TestExpectations	(revision 235880)
>+++ LayoutTests/TestExpectations	(working copy)
>@@ -2237,6 +2237,8 @@ webkit.org/b/187269 [ Debug ] imported/w
> 
> webkit.org/b/185308 legacy-animation-engine/animations/combo-transform-translate+scale.html [ Pass Failure ]
> 
>+webkit.org/b/189493 [ Debug ] imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-assigned.html [ Crash ]
>+
> fast/gradients/conic-repeating.html [ Skip ]
> fast/gradients/conic.html [ Skip ]
> fast/gradients/conic-off-center.html [ Skip ]
>Index: LayoutTests/imported/w3c/ChangeLog
>===================================================================
>--- LayoutTests/imported/w3c/ChangeLog	(revision 235880)
>+++ LayoutTests/imported/w3c/ChangeLog	(working copy)
>@@ -1,3 +1,50 @@
>+2018-09-10  Ryosuke Niwa  <rniwa@webkit.org>
>+
>+        Update shadow DOM and custom elements tests
>+        https://bugs.webkit.org/show_bug.cgi?id=189494
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Re-imported WPT tests for shadow DOM and custom elements.
>+
>+        * resources/import-expectations.json:
>+        * web-platform-tests/custom-elements/range-and-constructors-expected.txt: Added.
>+        * web-platform-tests/custom-elements/range-and-constructors.html: Added.
>+        * web-platform-tests/custom-elements/w3c-import.log:
>+        * web-platform-tests/shadow-dom/Document-prototype-currentScript-expected.txt:
>+        * web-platform-tests/shadow-dom/Document-prototype-currentScript.html:
>+        * web-platform-tests/shadow-dom/DocumentOrShadowRoot-prototype-elementFromPoint-expected.txt: Added.
>+        * web-platform-tests/shadow-dom/DocumentOrShadowRoot-prototype-elementFromPoint.html: Added.
>+        * web-platform-tests/shadow-dom/Element-interface-attachShadow-custom-element-expected.txt: Added.
>+        * web-platform-tests/shadow-dom/Element-interface-attachShadow-custom-element.html: Added.
>+        * web-platform-tests/shadow-dom/Element-interface-attachShadow-expected.txt:
>+        * web-platform-tests/shadow-dom/Element-interface-attachShadow.html:
>+        * web-platform-tests/shadow-dom/Extensions-to-Event-Interface-expected.txt:
>+        * web-platform-tests/shadow-dom/Extensions-to-Event-Interface.html:
>+        * web-platform-tests/shadow-dom/OWNERS: Removed.
>+        * web-platform-tests/shadow-dom/directionality-001.tentative-expected.html: Added.
>+        * web-platform-tests/shadow-dom/directionality-001.tentative.html: Added.
>+        * web-platform-tests/shadow-dom/event-composed-path-after-dom-mutation-expected.txt: Added.
>+        * web-platform-tests/shadow-dom/event-composed-path-after-dom-mutation.html: Added.
>+        * web-platform-tests/shadow-dom/form-control-form-attribute-expected.txt: Added.
>+        * web-platform-tests/shadow-dom/form-control-form-attribute.html: Added.
>+        * web-platform-tests/shadow-dom/getElementById-dynamic-001-expected.txt: Added.
>+        * web-platform-tests/shadow-dom/getElementById-dynamic-001.html: Added.
>+        * web-platform-tests/shadow-dom/input-element-list-expected.txt: Added.
>+        * web-platform-tests/shadow-dom/input-element-list.html: Added.
>+        * web-platform-tests/shadow-dom/layout-slot-no-longer-assigned-expected.html: Added.
>+        * web-platform-tests/shadow-dom/layout-slot-no-longer-assigned.html: Added.
>+        * web-platform-tests/shadow-dom/layout-slot-no-longer-fallback-expected.html: Added.
>+        * web-platform-tests/shadow-dom/layout-slot-no-longer-fallback.html: Added.
>+        * web-platform-tests/shadow-dom/leaktests/get-elements-expected.txt:
>+        * web-platform-tests/shadow-dom/leaktests/get-elements.html:
>+        * web-platform-tests/shadow-dom/leaktests/w3c-import.log:
>+        * web-platform-tests/shadow-dom/resources/event-path-test-helpers.js:
>+        (dispatchEventWithEventLog):
>+        * web-platform-tests/shadow-dom/resources/shadow-dom-utils.js:
>+        * web-platform-tests/shadow-dom/resources/w3c-import.log:
>+        * web-platform-tests/shadow-dom/w3c-import.log:
>+
> 2018-09-10  Ryosuke Niwa  <rniwa@webkit.org>
> 
>         Revert the errornous change to the test in r235864.
>Index: LayoutTests/imported/w3c/resources/import-expectations.json
>===================================================================
>--- LayoutTests/imported/w3c/resources/import-expectations.json	(revision 235880)
>+++ LayoutTests/imported/w3c/resources/import-expectations.json	(working copy)
>@@ -1,5 +1,7 @@
> {
>     "css/geometry": "import", 
>+    "custom-elements": "import", 
>+    "shadow-dom": "import", 
>     "tools": "import", 
>     "web-platform-tests/2dcontext": "skip", 
>     "web-platform-tests/2dcontext/imagebitmap": "import", 
>Index: LayoutTests/imported/w3c/web-platform-tests/custom-elements/range-and-constructors-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/custom-elements/range-and-constructors-expected.txt	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/custom-elements/range-and-constructors-expected.txt	(working copy)
>@@ -0,0 +1,4 @@
>+
>+FAIL Range.cloneContents should invoke constructor in tree order assert_array_equals: property 0, expected "root-0" but got "root-0-0"
>+FAIL Range.extractContents should invoke constructor in tree order assert_array_equals: property 0, expected "root-0" but got "root-0-0"
>+
>Index: LayoutTests/imported/w3c/web-platform-tests/custom-elements/range-and-constructors.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/custom-elements/range-and-constructors.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/custom-elements/range-and-constructors.html	(working copy)
>@@ -0,0 +1,61 @@
>+<!DOCTYPE html>
>+<html>
>+<head>
>+<title>Custom elements: Range APIs should invoke constructor in tree order</title>
>+<meta name="author" title="Edgar Chen" href="mailto:echen@mozilla.com">
>+<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#concept-upgrade-an-element">
>+<link rel="help" href="https://dom.spec.whatwg.org/#concept-create-element">
>+<line rel="help" href="https://dom.spec.whatwg.org/#concept-range-extract">
>+<line rel="help" href="https://dom.spec.whatwg.org/#concept-range-clone">
>+<script src="/resources/testharness.js"></script>
>+<script src="/resources/testharnessreport.js"></script>
>+</head>
>+<body>
>+<div id="log"></div>
>+
>+<c-e data-index="root">
>+  <c-e data-index="root-0">
>+    <c-e data-index="root-0-0">
>+      <c-e data-index="root-0-0-0"></c-e>
>+      <span id="start"></span>
>+    </c-e>
>+  </c-e>
>+  <c-e data-index="root-1"></c-e>
>+  <span id="end"></span>
>+</c-e>
>+
>+<script>
>+
>+var logs = [];
>+class CE extends HTMLElement {
>+  constructor() {
>+    super();
>+    logs.push(this.dataset.index);
>+  }
>+}
>+customElements.define('c-e', CE);
>+
>+function getRange() {
>+  const range = new Range();
>+  range.setStart(document.getElementById('start'), 0);
>+  range.setEnd(document.getElementById('end'), 0);
>+  return range;
>+}
>+
>+test(function () {
>+  // Clear log for testing.
>+  logs = [];
>+  getRange().cloneContents();
>+  assert_array_equals(logs, ['root-0', 'root-0-0', 'root-1']);
>+}, 'Range.cloneContents should invoke constructor in tree order');
>+
>+test(function () {
>+  // Clear log for testing.
>+  logs = [];
>+  getRange().extractContents();
>+  assert_array_equals(logs, ['root-0', 'root-0-0']);
>+}, 'Range.extractContents should invoke constructor in tree order');
>+
>+</script>
>+</body>
>+</html>
>Index: LayoutTests/imported/w3c/web-platform-tests/custom-elements/w3c-import.log
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/custom-elements/w3c-import.log	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/custom-elements/w3c-import.log	(working copy)
>@@ -30,5 +30,6 @@ List of files:
> /LayoutTests/imported/w3c/web-platform-tests/custom-elements/historical.html
> /LayoutTests/imported/w3c/web-platform-tests/custom-elements/microtasks-and-constructors.html
> /LayoutTests/imported/w3c/web-platform-tests/custom-elements/pseudo-class-defined.html
>+/LayoutTests/imported/w3c/web-platform-tests/custom-elements/range-and-constructors.html
> /LayoutTests/imported/w3c/web-platform-tests/custom-elements/reaction-timing.html
> /LayoutTests/imported/w3c/web-platform-tests/custom-elements/upgrading.html
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Document-prototype-currentScript-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Document-prototype-currentScript-expected.txt	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Document-prototype-currentScript-expected.txt	(working copy)
>@@ -1,10 +1,8 @@
> 
>-Harness Error (FAIL), message = 1 duplicate test name: "document.currentScript must be set to a script element that loads an external script in a document tree"
>-
> PASS document.currentScript must not to be set to a script element in a shadow tree in open mode 
> PASS document.currentScript must not to be set to a script element in a shadow tree in closed mode 
> PASS document.currentScript must be set to a script element that loads an external script in a document tree 
>-PASS document.currentScript must be set to a script element that loads an external script in a document tree 
>+PASS document.currentScript must be set to a script element that loads an external script in a document tree (2) 
> PASS document.currentScript must not be set to a script element that loads an external script in an open shadow tree 
> PASS document.currentScript must not be set to a script element that loads an external script in a closed shadow tree 
> PASS document.currentScript must be set to a script element that loads an external script that was in an open shadow tree and then removed 
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Document-prototype-currentScript.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Document-prototype-currentScript.html	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Document-prototype-currentScript.html	(working copy)
>@@ -1,6 +1,7 @@
> <!DOCTYPE html>
> <html>
> <head>
>+<meta charset=utf-8>
> <title>HTML: Document.prototype.currentScript</title>
> <meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
> <meta name="assert" content="If the script element is in a document, then set the script element's node document's currentScript attribute to the script element.">
>@@ -12,11 +13,16 @@
> <div id="log"></div>
> <script id="outerScriptElement">
> 
>+function assert_shadowdom_supported() {
>+  assert_true('attachShadow' in document.createElement('div'), 'Shadow DOM is not supported');
>+}
>+
> var outerScriptElement = document.currentScript;
> 
> function testInlineScript(mode)
> {
>     test(function () {
>+        assert_shadowdom_supported();
>         var host = document.createElement('div');
>         var shadowRoot = host.attachShadow({mode: mode});
>         var scriptElement = document.createElement('script');
>@@ -40,11 +46,16 @@ var testedScriptElement = null;
> function executeNextTest()
> {
>     var testCase = asyncScriptTests.shift();
>-    var mode = testCase.mode;
>     if (!testCase)
>         return;
> 
>+    var mode = testCase.mode;
>+
>+    testCase.test.add_cleanup(() => {
>+        setTimeout(executeNextTest, 1);
>+    });
>     testCase.test.step(function () {
>+        assert_shadowdom_supported();
>         testedScriptElement = document.createElement('script');
>         testedScriptElement.src = 'resources/Document-prototype-currentScript-helper.js';
> 
>@@ -66,7 +77,6 @@ function executeNextTest()
>             assert_equals(document.currentScript, testCase.expected());
>         });
>         testCase.test.done();
>-        setTimeout(executeNextTest, 1);
>     }
> }
> 
>@@ -75,7 +85,7 @@ var asyncScriptTests = [
>         test: async_test('document.currentScript must be set to a script element that loads an external script in a document tree'),
>         mode: null, remove: false, expected: function () { return testedScriptElement; }},
>     {
>-        test: async_test('document.currentScript must be set to a script element that loads an external script in a document tree'),
>+        test: async_test('document.currentScript must be set to a script element that loads an external script in a document tree (2)'),
>         mode: null, remove: true, expected: function () { return testedScriptElement; }},
>     {
>         test: async_test('document.currentScript must not be set to a script element that loads an external script in an open shadow tree'),
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/DocumentOrShadowRoot-prototype-elementFromPoint-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/DocumentOrShadowRoot-prototype-elementFromPoint-expected.txt	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/DocumentOrShadowRoot-prototype-elementFromPoint-expected.txt	(working copy)
>@@ -0,0 +1,42 @@
>+
>+PASS document.elementFromPoint and shadow.ElementFromPoint must return the shadow host of the hit-tested text node when the hit-tested text node is a direct child of the root and the host has display: inline 
>+PASS document.elementFromPoint and shadow.ElementFromPoint must return the shadow host of the hit-tested text node when the hit-tested text node is a direct child of the root and the host has display: block 
>+PASS document.elementFromPoint and shadow.ElementFromPoint must return the shadow host of the hit-tested text node when the hit-tested text node is a direct child of the root and the host has display: inline-block 
>+FAIL document.elementFromPoint and shadowRoot.elementFromPoint must return the shadow host when the hit-tested text node is assigned to a slot and the host has display: inline assert_equals: expected Element node <test-element style="display: inline;">text</test-element> but got Element node <slot></slot>
>+FAIL document.elementFromPoint and shadowRoot.elementFromPoint must return the shadow host when the hit-tested text node is assigned to a slot and the host has display: block assert_equals: expected Element node <test-element style="display: block;">text</test-element> but got Element node <slot></slot>
>+FAIL document.elementFromPoint and shadowRoot.elementFromPoint must return the shadow host when the hit-tested text node is assigned to a slot and the host has display: inline-block assert_equals: expected Element node <test-element style="display: inline-block;">text</test-e... but got Element node <slot></slot>
>+PASS document.elementFromPoint and shadowRoot.elementFromPoint must return the element assigned to a slot when hit-tested text node under an element is assigned to a slot in the shadow tree and the shadow host of the slot has display: inline 
>+PASS document.elementFromPoint and shadowRoot.elementFromPoint must return the element assigned to a slot when hit-tested text node under an element is assigned to a slot in the shadow tree and the shadow host of the slot has display: block 
>+PASS document.elementFromPoint and shadowRoot.elementFromPoint must return the element assigned to a slot when hit-tested text node under an element is assigned to a slot in the shadow tree and the shadow host of the slot has display: inline-block 
>+PASS document.elementFromPoint must return the shadow host of the hit-tested element under a shadow root and shadowRoot.elementFromPoint must return the element parent of the hit-tested text node under the point when the shadow host has display: inline 
>+PASS document.elementFromPoint must return the shadow host of the hit-tested element under a shadow root and shadowRoot.elementFromPoint must return the element parent of the hit-tested text node under the point when the shadow host has display: block 
>+PASS document.elementFromPoint must return the shadow host of the hit-tested element under a shadow root and shadowRoot.elementFromPoint must return the element parent of the hit-tested text node under the point when the shadow host has display: inline-block 
>+PASS document.elementFromPoint must return the shadow host and shadowRoot.elementFromPoint must return the slot parent of the fallback text when the hit-tested text node is a fallback content and the host has display: inline 
>+PASS document.elementFromPoint must return the shadow host and shadowRoot.elementFromPoint must return the slot parent of the fallback text when the hit-tested text node is a fallback content and the host has display: block 
>+PASS document.elementFromPoint must return the shadow host and shadowRoot.elementFromPoint must return the slot parent of the fallback text when the hit-tested text node is a fallback content and the host has display: inline-block 
>+FAIL document.elementFromPoint, shadowRoot.elementFromPoint, innerShadow.elementFromPoint must return a child element assigned to a slot when the hit-tested text node is assigned to a slot in the shadow tree of the child element and the outer shadow host has display: inline assert_equals: expected Element node <inner-host>hello</inner-host> but got Element node <slot></slot>
>+FAIL document.elementFromPoint, shadowRoot.elementFromPoint, innerShadow.elementFromPoint must return a child element assigned to a slot when the hit-tested text node is assigned to a slot in the shadow tree of the child element and the outer shadow host has display: block assert_equals: expected Element node <inner-host>hello</inner-host> but got Element node <slot></slot>
>+FAIL document.elementFromPoint, shadowRoot.elementFromPoint, innerShadow.elementFromPoint must return a child element assigned to a slot when the hit-tested text node is assigned to a slot in the shadow tree of the child element and the outer shadow host has display: inline-block assert_equals: expected Element node <inner-host>hello</inner-host> but got Element node <slot></slot>
>+PASS document.elementFromPoint, shadowRoot.elementFromPoint, innerShadow.elementFromPoint must return a child element with its own shadow tree assigned to a slot when the hit-tested text node is its direct child and the outer shadow host has display: inline 
>+PASS document.elementFromPoint, shadowRoot.elementFromPoint, innerShadow.elementFromPoint must return a child element with its own shadow tree assigned to a slot when the hit-tested text node is its direct child and the outer shadow host has display: block 
>+PASS document.elementFromPoint, shadowRoot.elementFromPoint, innerShadow.elementFromPoint must return a child element with its own shadow tree assigned to a slot when the hit-tested text node is its direct child and the outer shadow host has display: inline-block 
>+PASS document.elementFromPoint, shadowRoot.elementFromPoint must return a child element with its own shadow tree assigned to a slot when the hit-tested text node is a child of another element and innerShadow.elementFromPoint must return the parent element of the hit-tested text node under it when the outer shadow host has display: inline 
>+PASS document.elementFromPoint, shadowRoot.elementFromPoint must return a child element with its own shadow tree assigned to a slot when the hit-tested text node is a child of another element and innerShadow.elementFromPoint must return the parent element of the hit-tested text node under it when the outer shadow host has display: block 
>+PASS document.elementFromPoint, shadowRoot.elementFromPoint must return a child element with its own shadow tree assigned to a slot when the hit-tested text node is a child of another element and innerShadow.elementFromPoint must return the parent element of the hit-tested text node under it when the outer shadow host has display: inline-block 
>+PASS document.elementsFromPoint and shadow.elementsFromPoint must return the shadow host and its ancestors of the hit-tested text node when the hit-tested text node is a direct child of the root and the host has display: inline 
>+PASS document.elementsFromPoint and shadow.elementsFromPoint must return the shadow host and its ancestors of the hit-tested text node when the hit-tested text node is a direct child of the root and the host has display: block 
>+PASS document.elementsFromPoint and shadow.elementsFromPoint must return the shadow host and its ancestors of the hit-tested text node when the hit-tested text node is a direct child of the root and the host has display: inline-block 
>+FAIL document.elementsFromPoint and shadowRoot.elementsFromPoint must return the shadow host and its ancestors when the hit-tested text node is assigned to a slot and the host has display: inline assert_array_equals: property 0, expected Element node <test-element style="display: inline;">text</test-element> but got Element node <slot></slot>
>+FAIL document.elementsFromPoint and shadowRoot.elementsFromPoint must return the shadow host and its ancestors when the hit-tested text node is assigned to a slot and the host has display: block assert_array_equals: lengths differ, expected 4 got 5
>+FAIL document.elementsFromPoint and shadowRoot.elementsFromPoint must return the shadow host and its ancestors when the hit-tested text node is assigned to a slot and the host has display: inline-block assert_array_equals: lengths differ, expected 4 got 5
>+PASS document.elementsFromPoint and shadowRoot.elementsFromPoint must return the element assigned to a slot and its non-shadow ancestors when hit-tested text node under an element is assigned to a slot in the shadow tree and the shadow host of the slot has display: inline 
>+PASS document.elementsFromPoint and shadowRoot.elementsFromPoint must return the element assigned to a slot and its non-shadow ancestors when hit-tested text node under an element is assigned to a slot in the shadow tree and the shadow host of the slot has display: block 
>+PASS document.elementsFromPoint and shadowRoot.elementsFromPoint must return the element assigned to a slot and its non-shadow ancestors when hit-tested text node under an element is assigned to a slot in the shadow tree and the shadow host of the slot has display: inline-block 
>+FAIL document.elementsFromPoint must return the shadow host and its ancestors of the hit-tested element under a shadow root andshadowRoot.elementsFromPoint must return the element parent and its non-shadow ancestors of the hit-tested text node under the point when the shadow host has display: inline assert_array_equals: lengths differ, expected 5 got 4
>+PASS document.elementsFromPoint must return the shadow host and its ancestors of the hit-tested element under a shadow root andshadowRoot.elementsFromPoint must return the element parent and its non-shadow ancestors of the hit-tested text node under the point when the shadow host has display: block 
>+PASS document.elementsFromPoint must return the shadow host and its ancestors of the hit-tested element under a shadow root andshadowRoot.elementsFromPoint must return the element parent and its non-shadow ancestors of the hit-tested text node under the point when the shadow host has display: inline-block 
>+PASS document.elementsFromPoint must return the shadow host and its ancestors and shadowRoot.elementsFromPoint must return the slot parent of the fallback text and its non-shadow ancestors when the hit-tested text node is a fallback content and the host has display: inline 
>+PASS document.elementsFromPoint must return the shadow host and its ancestors and shadowRoot.elementsFromPoint must return the slot parent of the fallback text and its non-shadow ancestors when the hit-tested text node is a fallback content and the host has display: block 
>+PASS document.elementsFromPoint must return the shadow host and its ancestors and shadowRoot.elementsFromPoint must return the slot parent of the fallback text and its non-shadow ancestors when the hit-tested text node is a fallback content and the host has display: inline-block 
>+FAIL shadowRoot.elementsFromPoint must behave the same with document.elementsFromPoint regarding HTML element assert_array_equals: lengths differ, expected 5 got 4
>+
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/DocumentOrShadowRoot-prototype-elementFromPoint.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/DocumentOrShadowRoot-prototype-elementFromPoint.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/DocumentOrShadowRoot-prototype-elementFromPoint.html	(working copy)
>@@ -0,0 +1,256 @@
>+<!DOCTYPE html>
>+<html>
>+  <head>
>+    <title>Shadow DOM and CSSOM View: Document.prototype.elementFromPoint</title>
>+    <meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
>+    <meta name="assert" content="DocumentOrShadowRoot must have elementFromPoint and must return retarget the result against the context object.">
>+    <link rel="help" href="https://www.w3.org/TR/cssom-view-1/#dom-document-elementfrompoint">
>+    <link rel="help" href="https://www.w3.org/TR/shadow-dom/#extensions-to-the-documentorshadowroot-mixin">
>+    <script src="/resources/testharness.js"></script>
>+    <script src="/resources/testharnessreport.js"></script>
>+  </head>
>+  <body>
>+    <div id="container"></div>
>+    <style>
>+test-element { display: block; width: 100px; height: 100px; }
>+    </style>
>+    <script>
>+
>+function pointInElement(node) {
>+  let x = 5;
>+  let y = 5;
>+  do {
>+    x += node.offsetLeft;
>+    y += node.offsetTop;
>+    node = node.offsetParent;
>+  } while (node);
>+  return [x, y];
>+}
>+
>+const displayValues = ['inline', 'block', 'inline-block'];
>+var container = document.getElementById('container');
>+customElements.define('test-element', class extends HTMLElement {
>+  constructor() {
>+    super();
>+  }
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = 'hello';
>+    container.appendChild(host);
>+    assert_equals(document.elementFromPoint(...pointInElement(host)), host);
>+    assert_equals(shadow.elementFromPoint(...pointInElement(host)), host);
>+  }, 'document.elementFromPoint and shadow.ElementFromPoint must return the shadow host of the hit-tested text node when the hit-tested text node is a direct child of the root and the host has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<slot></slot>';
>+    host.innerHTML = 'text';
>+    container.appendChild(host);
>+    assert_equals(document.elementFromPoint(...pointInElement(host)), host);
>+    assert_equals(shadow.elementFromPoint(...pointInElement(host)), host);
>+  }, 'document.elementFromPoint and shadowRoot.elementFromPoint must return the shadow host when the hit-tested text node is assigned to a slot and the host has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<slot></slot>';
>+    host.innerHTML = '<span>text</span>';
>+    container.appendChild(host);
>+    assert_equals(document.elementFromPoint(...pointInElement(host)), host.querySelector('span'));
>+    assert_equals(shadow.elementFromPoint(...pointInElement(host)), host.querySelector('span'));
>+  }, 'document.elementFromPoint and shadowRoot.elementFromPoint must return the element assigned to a slot when hit-tested text node under an element is assigned to a slot in the shadow tree and the shadow host of the slot has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<span>text</span>';
>+    container.appendChild(host);
>+    assert_equals(document.elementFromPoint(...pointInElement(host)), host);
>+    assert_equals(shadow.elementFromPoint(...pointInElement(host)), shadow.querySelector('span'));
>+  }, 'document.elementFromPoint must return the shadow host of the hit-tested element under a shadow root and shadowRoot.elementFromPoint must return the element parent of the hit-tested text node under the point when the shadow host has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<slot>fallback</slot>';
>+    container.appendChild(host);
>+    assert_equals(document.elementFromPoint(...pointInElement(host)), host);
>+    assert_equals(shadow.elementFromPoint(...pointInElement(host)), shadow.querySelector('slot'));
>+  }, 'document.elementFromPoint must return the shadow host and shadowRoot.elementFromPoint must return the slot parent of the fallback text when the hit-tested text node is a fallback content and the host has display: ' + displayValue);
>+});
>+
>+
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<slot></slot>';
>+    host.innerHTML = '<inner-host>hello</inner-host>';
>+    container.appendChild(host);
>+
>+    let innerHost = host.querySelector('inner-host');
>+    let innerShadow = innerHost.attachShadow({mode: 'closed'});
>+    innerShadow.innerHTML = '<slot></slot>';
>+    assert_equals(document.elementFromPoint(...pointInElement(host)), innerHost);
>+    assert_equals(shadow.elementFromPoint(...pointInElement(host)), innerHost);
>+    assert_equals(innerShadow.elementFromPoint(...pointInElement(host)), innerHost);
>+  }, 'document.elementFromPoint, shadowRoot.elementFromPoint, innerShadow.elementFromPoint must return a child element assigned to a slot'
>+  + ' when the hit-tested text node is assigned to a slot in the shadow tree of the child element and the outer shadow host has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<slot></slot>';
>+    host.innerHTML = '<inner-host></inner-host>';
>+    container.appendChild(host);
>+
>+    let innerHost = host.querySelector('inner-host');
>+    let innerShadow = innerHost.attachShadow({mode: 'closed'});
>+    innerShadow.innerHTML = 'hello';
>+    assert_equals(document.elementFromPoint(...pointInElement(host)), innerHost);
>+    assert_equals(shadow.elementFromPoint(...pointInElement(host)), innerHost);
>+    assert_equals(innerShadow.elementFromPoint(...pointInElement(host)), innerHost);
>+  }, 'document.elementFromPoint, shadowRoot.elementFromPoint, innerShadow.elementFromPoint must return a child element with its own shadow tree assigned to a slot'
>+  + ' when the hit-tested text node is its direct child and the outer shadow host has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<slot></slot>';
>+    host.innerHTML = '<inner-host></inner-host>';
>+    container.appendChild(host);
>+
>+    let innerHost = host.querySelector('inner-host');
>+    let innerShadow = innerHost.attachShadow({mode: 'closed'});
>+    innerShadow.innerHTML = '<span>hello</span>';
>+
>+    assert_equals(document.elementFromPoint(...pointInElement(host)), innerHost);
>+    assert_equals(shadow.elementFromPoint(...pointInElement(host)), innerHost);
>+    assert_equals(innerShadow.elementFromPoint(...pointInElement(host)), innerShadow.querySelector('span'));
>+  }, 'document.elementFromPoint, shadowRoot.elementFromPoint must return a child element with its own shadow tree assigned to a slot'
>+  + ' when the hit-tested text node is a child of another element and innerShadow.elementFromPoint must return the parent element of the hit-tested text node under it when the outer shadow host has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = 'hello';
>+    container.appendChild(host);
>+    assert_array_equals(document.elementsFromPoint(...pointInElement(host)), [host, container, document.body, document.documentElement]);
>+    assert_array_equals(shadow.elementsFromPoint(...pointInElement(host)), [host, container, document.body, document.documentElement]);
>+  }, 'document.elementsFromPoint and shadow.elementsFromPoint must return the shadow host and its ancestors of the hit-tested text node when the hit-tested text node is a direct child of the root and the host has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<slot></slot>';
>+    host.innerHTML = 'text';
>+    container.appendChild(host);
>+    assert_array_equals(document.elementsFromPoint(...pointInElement(host)), [host, container, document.body, document.documentElement]);
>+    assert_array_equals(shadow.elementsFromPoint(...pointInElement(host)), [host, container, document.body, document.documentElement]);
>+  },'document.elementsFromPoint and shadowRoot.elementsFromPoint must return the shadow host and its ancestors when the hit-tested text node is assigned to a slot and the host has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<div><slot></slot></div>';
>+    host.innerHTML = '<span>text</span>';
>+    container.appendChild(host);
>+    assert_array_equals(document.elementsFromPoint(...pointInElement(host)), [host.querySelector('span'), host, container, document.body, document.documentElement]);
>+    assert_array_equals(shadow.elementsFromPoint(...pointInElement(host)), [host.querySelector('span'), shadow.querySelector('div'),  host, container, document.body, document.documentElement]);
>+  }, 'document.elementsFromPoint and shadowRoot.elementsFromPoint must return the element assigned to a slot and its non-shadow ancestors when hit-tested text node under an element is assigned to a slot in the shadow tree and the shadow host of the slot has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<span>text</span>';
>+    container.appendChild(host);
>+    assert_array_equals(document.elementsFromPoint(...pointInElement(host)), [host, container, document.body, document.documentElement]);
>+    assert_array_equals(shadow.elementsFromPoint(...pointInElement(host)), [shadow.querySelector('span'), host, container, document.body, document.documentElement]);
>+  }, 'document.elementsFromPoint must return the shadow host and its ancestors of the hit-tested element under a shadow root and'
>+  + 'shadowRoot.elementsFromPoint must return the element parent and its non-shadow ancestors of the hit-tested text node under the point when the shadow host has display: ' + displayValue);
>+});
>+
>+displayValues.forEach(function (displayValue) {
>+  test(function () {
>+    container.innerHTML = '';
>+    let host = document.createElement('test-element');
>+    host.style.display = displayValue;
>+    let shadow = host.attachShadow({mode: 'closed'});
>+    shadow.innerHTML = '<div><slot>fallback</slot></div>';
>+    container.appendChild(host);
>+    assert_array_equals(document.elementsFromPoint(...pointInElement(host)), [host, container, document.body, document.documentElement]);
>+    assert_array_equals(shadow.elementsFromPoint(...pointInElement(host)), [shadow.querySelector('slot'), shadow.querySelector('div'), host, container, document.body, document.documentElement]);
>+  }, 'document.elementsFromPoint must return the shadow host and its ancestors and shadowRoot.elementsFromPoint must return the slot parent of the fallback text and its non-shadow ancestors when the hit-tested text node is a fallback content and the host has display: ' + displayValue);
>+});
>+
>+test(function () {
>+  container.innerHTML = '';
>+  let host = document.createElement('test-element');
>+  host.style.display = 'block';
>+  let shadow = host.attachShadow({mode: 'closed'});
>+  shadow.innerHTML = '<div style="margin: 2px;">not hit</div>';
>+  let aboveHost = document.createElement("div");
>+  aboveHost.appendChild(host);
>+  container.appendChild(aboveHost);
>+  document.documentElement.style = 'background-attachment: scroll; height: 2px;';
>+  let boundingRect = host.getBoundingClientRect();
>+  assert_array_equals(document.elementsFromPoint(boundingRect.x, boundingRect.y), [host, aboveHost, container, document.body, document.documentElement]);
>+  assert_array_equals(shadow.elementsFromPoint(boundingRect.x, boundingRect.y), [host, aboveHost, container, document.body, document.documentElement]);
>+}, 'shadowRoot.elementsFromPoint must behave the same with document.elementsFromPoint regarding HTML element');
>+
>+container.innerHTML = '';
>+
>+    </script>
>+  </body>
>+</html>
>+
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow-custom-element-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow-custom-element-expected.txt	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow-custom-element-expected.txt	(working copy)
>@@ -0,0 +1,4 @@
>+
>+PASS Element.attachShadow must create an instance of ShadowRoot for autonomous custom elements 
>+PASS Element.attachShadow must throw a NotSupportedError for customized built-in elements 
>+
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow-custom-element.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow-custom-element.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow-custom-element.html	(working copy)
>@@ -0,0 +1,29 @@
>+<!DOCTYPE html>
>+<title>Shadow DOM: Attaching a ShadowRoot for custom elements</title>
>+<meta name="author" title="Hayato Ito" href="mailto:hayato@chromium.org">
>+<link rel="help" href="https://dom.spec.whatwg.org/#dom-element-attachshadow">
>+<script src="/resources/testharness.js"></script>
>+<script src="/resources/testharnessreport.js"></script>
>+<script>
>+class MyAutonomousCustomElement extends HTMLElement {
>+}
>+
>+customElements.define('my-custom', MyAutonomousCustomElement);
>+
>+test(() => {
>+  assert_true(document.createElement('my-custom').attachShadow({mode: "open"}) instanceof ShadowRoot);
>+}, 'Element.attachShadow must create an instance of ShadowRoot for autonomous custom elements');
>+
>+class MyCustomizedBuiltinElement extends HTMLInputElement {
>+}
>+
>+customElements.define('my-input', MyCustomizedBuiltinElement, { extends: 'input' });
>+
>+test(() => {
>+  assert_throws({'name': 'NotSupportedError'}, () => {
>+    document.createElement('input', {is: 'my-input'}).attachShadow({mode: "open"});
>+  });
>+}, 'Element.attachShadow must throw a NotSupportedError for customized built-in elements');
>+</script>
>+</body>
>+</html>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow-expected.txt	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow-expected.txt	(working copy)
>@@ -4,5 +4,5 @@ PASS Nodes other than Element should not
> PASS Element.attachShadow must throw a TypeError if mode is not "open" or "closed" 
> PASS Element.attachShadow must create an instance of ShadowRoot 
> PASS Element.attachShadow must throw a InvalidStateError if the context object already hosts a shadow tree 
>-PASS Element.attachShadow must throw a NotSupportedError for button, details, input, marquee, meter, progress, select, textarea, and keygen elements 
>+PASS Element.attachShadow must throw a NotSupportedError for non-safelisted elements 
> 
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow.html	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow.html	(working copy)
>@@ -7,6 +7,7 @@
> <link rel="help" href="https://w3c.github.io/webcomponents/spec/shadow/#widl-Element-attachShadow-ShadowRoot-ShadowRootInit-shadowRootInitDict">
> <script src="/resources/testharness.js"></script>
> <script src="/resources/testharnessreport.js"></script>
>+<script src="resources/shadow-dom-utils.js"></script>
> </head>
> <body>
> <div id="log"></div>
>@@ -78,7 +79,7 @@ test(function () {
> }, 'Element.attachShadow must throw a InvalidStateError if the context object already hosts a shadow tree');
> 
> test(function () {
>-    for (var elementName of ['button', 'details', 'input', 'marquee', 'meter', 'progress', 'select', 'textarea', 'keygen']) {
>+    for (var elementName of ATTACHSHADOW_DISALLOWED_ELEMENTS) {
>         assert_throws({'name': 'NotSupportedError'}, function () {
>             document.createElement(elementName).attachShadow({mode: "open"});
>         }, 'Calling attachShadow({mode: "open"}) on ' + elementName + ' element must throw');
>@@ -87,7 +88,7 @@ test(function () {
>             document.createElement(elementName).attachShadow({mode: "closed"});
>         }, 'Calling attachShadow({mode: "closed"}) on ' + elementName + ' element must throw');
>     }
>-}, 'Element.attachShadow must throw a NotSupportedError for button, details, input, marquee, meter, progress, select, textarea, and keygen elements');
>+}, 'Element.attachShadow must throw a NotSupportedError for non-safelisted elements');
> 
> </script>
> </body>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Extensions-to-Event-Interface-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Extensions-to-Event-Interface-expected.txt	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Extensions-to-Event-Interface-expected.txt	(working copy)
>@@ -1,20 +1,18 @@
> 
>-PASS composedPath() must exist on Event 
> PASS composedPath() must return an empty array when the event has not been dispatched 
> PASS composedPath() must return an empty array when the event is no longer dispatched 
>-PASS composed must exist on Event 
> PASS composed on EventInit must default to false 
> PASS composed on EventInit must set the composed flag 
>-FAIL The event must propagate out of open mode shadow boundaries when the composed flag is set assert_array_equals: value is 5, expected array
>-FAIL The event must propagate out of closed mode shadow boundaries when the composed flag is set assert_array_equals: value is 5, expected array
>-FAIL The event must not propagate out of open mode shadow boundaries when the composed flag is unset assert_array_equals: value is 2, expected array
>-FAIL The event must not propagate out of closed mode shadow boundaries when the composed flag is unset assert_array_equals: value is 2, expected array
>-FAIL The event must not propagate out of open mode shadow boundaries when the composed flag is unset on an event with relatedTarget assert_array_equals: value is 2, expected array
>-FAIL The event must not propagate out of closed mode shadow boundaries when the composed flag is unset on an event with relatedTarget assert_array_equals: value is 2, expected array
>-FAIL The event must not propagate out of open mode shadow tree of the target but must propagate out of inner shadow trees when the scoped flag is set assert_array_equals: value is 5, expected array
>-FAIL The event must not propagate out of closed mode shadow tree of the target but must propagate out of inner shadow trees when the scoped flag is set assert_array_equals: value is 5, expected array
>-FAIL The event must propagate out of open mode shadow tree in which the relative target and the relative related target are the same assert_array_equals: value is 4, expected array
>-FAIL The event must propagate out of closed mode shadow tree in which the relative target and the relative related target are the same assert_array_equals: value is 4, expected array
>-FAIL composedPath() must contain and only contain the unclosed nodes of target in open mode shadow trees assert_array_equals: value is 9, expected array
>-FAIL composedPath() must contain and only contain the unclosed nodes of target in closed mode shadow trees assert_array_equals: value is 9, expected array
>+PASS The event must propagate out of open mode shadow boundaries when the composed flag is set 
>+PASS The event must propagate out of closed mode shadow boundaries when the composed flag is set 
>+PASS The event must not propagate out of open mode shadow boundaries when the composed flag is unset 
>+PASS The event must not propagate out of closed mode shadow boundaries when the composed flag is unset 
>+PASS The event must not propagate out of open mode shadow boundaries when the composed flag is unset on an event with relatedTarget 
>+PASS The event must not propagate out of closed mode shadow boundaries when the composed flag is unset on an event with relatedTarget 
>+PASS The event must not propagate out of open mode shadow tree of the target but must propagate out of inner shadow trees when the scoped flag is set 
>+PASS The event must not propagate out of closed mode shadow tree of the target but must propagate out of inner shadow trees when the scoped flag is set 
>+PASS The event must propagate out of open mode shadow tree in which the relative target and the relative related target are the same 
>+PASS The event must propagate out of closed mode shadow tree in which the relative target and the relative related target are the same 
>+PASS composedPath() must contain and only contain the unclosed nodes of target in open mode shadow trees 
>+PASS composedPath() must contain and only contain the unclosed nodes of target in closed mode shadow trees 
> 
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Extensions-to-Event-Interface.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Extensions-to-Event-Interface.html	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Extensions-to-Event-Interface.html	(working copy)
>@@ -14,11 +14,6 @@
> <script>
> 
> test(function () {
>-    assert_true('composedPath' in Event.prototype);
>-    assert_true('composedPath' in new Event('my-event'));
>-}, 'composedPath() must exist on Event');
>-
>-test(function () {
>     var event = new Event('my-event');
>     assert_array_equals(event.composedPath(), []);
> }, 'composedPath() must return an empty array when the event has not been dispatched');
>@@ -30,11 +25,6 @@ test(function () {
> }, 'composedPath() must return an empty array when the event is no longer dispatched');
> 
> test(function () {
>-    assert_true('composed' in Event.prototype);
>-    assert_true('composed' in new Event('my-event'));
>-}, 'composed must exist on Event');
>-
>-test(function () {
>     var event = new Event('my-event');
>     assert_false(event.composed);
> }, 'composed on EventInit must default to false');
>@@ -64,7 +54,7 @@ function testComposedEvent(mode) {
> 
>         var expectedPath = ['A1a', 'A1-SR', 'A1', 'A-SR', 'A'];
>         assert_array_equals(log.eventPath, expectedPath);
>-        assert_array_equals(log.eventPath.length, log.pathAtTargets.length);
>+        assert_equals(log.eventPath.length, log.pathAtTargets.length);
>         assert_array_equals(log.pathAtTargets[0], expectedPath);
>         assert_array_equals(log.pathAtTargets[1], expectedPath);
>         assert_array_equals(log.pathAtTargets[2], mode == 'open' ? expectedPath : ['A1', 'A-SR', 'A'],
>@@ -92,7 +82,7 @@ function testNonComposedEvent(mode) {
> 
>         var expectedPath = ['A1a', 'A1-SR'];
>         assert_array_equals(log.eventPath, expectedPath);
>-        assert_array_equals(log.eventPath.length, log.pathAtTargets.length);
>+        assert_equals(log.eventPath.length, log.pathAtTargets.length);
>         assert_array_equals(log.pathAtTargets[0], expectedPath);
>         assert_array_equals(log.pathAtTargets[1], expectedPath);
>     }, 'The event must not propagate out of ' + mode + ' mode shadow boundaries when the composed flag is unset');
>@@ -118,7 +108,7 @@ function testNonComposedEventWithRelated
> 
>         var expectedPath = ['A1a', 'A1-SR'];
>         assert_array_equals(log.eventPath, expectedPath);
>-        assert_array_equals(log.eventPath.length, log.pathAtTargets.length);
>+        assert_equals(log.eventPath.length, log.pathAtTargets.length);
>         assert_array_equals(log.pathAtTargets[0], expectedPath);
>         assert_array_equals(log.pathAtTargets[1], expectedPath);
>         assert_array_equals(log.relatedTargets, ['A2-S', 'A2-S']);
>@@ -146,7 +136,7 @@ function testScopedEventWithUnscopedRela
>         var expectedPath = ['B1a', 'B1c-S', 'B1-SR', 'B1', 'B-SR'];
>         var pathExposedToB1a = ['B1a', 'B1', 'B-SR'];
>         assert_array_equals(log.eventPath, expectedPath);
>-        assert_array_equals(log.eventPath.length, log.pathAtTargets.length);
>+        assert_equals(log.eventPath.length, log.pathAtTargets.length);
>         assert_array_equals(log.pathAtTargets[0], mode == 'open' ? expectedPath : pathExposedToB1a);
>         assert_array_equals(log.pathAtTargets[1], expectedPath);
>         assert_array_equals(log.pathAtTargets[2], expectedPath);
>@@ -177,7 +167,7 @@ function testComposedEventWithRelatedTar
>         var expectedPath = ['A1a', 'A1-SR', 'A1', 'A-SR'];
>         var pathExposedToA1 = ['A1', 'A-SR'];
>         assert_array_equals(log.eventPath, expectedPath);
>-        assert_array_equals(log.eventPath.length, log.pathAtTargets.length);
>+        assert_equals(log.eventPath.length, log.pathAtTargets.length);
>         assert_array_equals(log.pathAtTargets[0], expectedPath);
>         assert_array_equals(log.pathAtTargets[1], expectedPath);
>         assert_array_equals(log.pathAtTargets[2], mode == 'open' ? expectedPath : pathExposedToA1);
>@@ -212,7 +202,7 @@ function testComposedEventThroughSlot(mo
>         var pathExposedToA1 =       [                                       'B', 'A2-S', 'A-SR', 'A'];
> 
>         assert_array_equals(log.eventPath, expectedPath);
>-        assert_array_equals(log.eventPath.length, log.pathAtTargets.length);
>+        assert_equals(log.eventPath.length, log.pathAtTargets.length);
>         assert_array_equals(log.pathAtTargets[0], mode == 'open' ? expectedPath : pathExposedToB1a);
>         assert_array_equals(log.pathAtTargets[1], mode == 'open' ? expectedPath : pathExposedToB1cS);
>         assert_array_equals(log.pathAtTargets[2], mode == 'open' ? expectedPath : pathExposedToB1cS);
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/OWNERS
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/OWNERS	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/OWNERS	(nonexistent)
>@@ -1,4 +0,0 @@
>-@kojiishi
>-@rniwa
>-@takayoshikochi
>-@hayatoito
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/directionality-001.tentative-expected.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/directionality-001.tentative-expected.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/directionality-001.tentative-expected.html	(working copy)
>@@ -0,0 +1,6 @@
>+<!doctype html>
>+<title>CSS Test Reference</title>
>+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Ãlvarez">
>+<div dir="rtl"> 123 456 <span><span> 789 101112 </span></span></div>
>+<div dir="rtl"> 123 456 <span dir="ltr"><span> 789 101112 </span></span></div>
>+<div dir="rtl"> 123 456 <span><span> 789 101112 </span></span></div>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/directionality-001.tentative.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/directionality-001.tentative.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/directionality-001.tentative.html	(working copy)
>@@ -0,0 +1,19 @@
>+<!doctype html>
>+<title>Test: directionality propagation in Shadow DOM.</title>
>+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Ãlvarez">
>+<link rel="help" href="https://html.spec.whatwg.org/#the-dir-attribute">
>+<link rel="help" href="https://github.com/whatwg/html/issues/3699">
>+<link rel="match" href="directionality-001-ref.html">
>+<div id="host0" dir="rtl"><span> 789 101112 </span></div>
>+<div id="host1" dir="rtl"><span> 789 101112 </span></div>
>+<div id="host2" dir="rtl"><span> 789 101112 </span></div>
>+<script>
>+  host0.attachShadow({mode: 'closed'}).innerHTML =
>+    '<div> 123 456 <span><slot></slot></span></div>';
>+
>+  host1.attachShadow({mode: 'closed'}).innerHTML =
>+    '<div> 123 456 <span dir="ltr"><slot></slot></span></div>';
>+
>+  host2.attachShadow({mode: 'closed'}).innerHTML =
>+    '<div> 123 456 <span><slot dir="ltr"></slot></span></div>';
>+</script>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-composed-path-after-dom-mutation-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-composed-path-after-dom-mutation-expected.txt	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-composed-path-after-dom-mutation-expected.txt	(working copy)
>@@ -0,0 +1,4 @@
>+
>+FAIL Event.composedPath() should return the same result even if DOM is mutated (1/2) assert_array_equals: lengths differ, expected 3 got 2
>+FAIL Event.composedPath() should return the same result even if DOM is mutated (2/2) assert_array_equals: lengths differ, expected 5 got 2
>+
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-composed-path-after-dom-mutation.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-composed-path-after-dom-mutation.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-composed-path-after-dom-mutation.html	(working copy)
>@@ -0,0 +1,59 @@
>+<!DOCTYPE html>
>+<title>Shadow DOM: Event.composedPath() should return the same result even if DOM is mutated</title>
>+<meta name="author" title="Hayato Ito" href="mailto:hayato@google.com">
>+<script src="/resources/testharness.js"></script>
>+<script src="/resources/testharnessreport.js"></script>
>+<script src="resources/shadow-dom.js"></script>
>+
>+<div id="test1">
>+  <div id="host">
>+    <template id="sr" data-mode="closed">
>+      <div id="target"></div>
>+    </template>
>+  </div>
>+</div>
>+
>+<script>
>+async_test((t) => {
>+  const n = createTestTree(document.querySelector('#test1'));
>+  n.host.addEventListener('my-event', t.step_func((e) => {
>+    const path_before = e.composedPath();
>+    // Move the target out of a closed shadow tree
>+    n.host.append(n.target);
>+    const path_after = e.composedPath();
>+    assert_array_equals(path_before, path_after);
>+    t.done();
>+  }));
>+  const event = new Event('my-event', { bubbles: true, composed: true });
>+  n.target.dispatchEvent(event);
>+}, 'Event.composedPath() should return the same result even if DOM is mutated (1/2)');
>+</script>
>+
>+<div id="test2">
>+  <div id="host1">
>+    <template id="sr1" data-mode="closed">
>+      <div id="host2">
>+        <template id="sr2" data-mode="open">
>+          <div id="target"></div>
>+        </template>
>+      </div>
>+    </template>
>+  </div>
>+</div>
>+
>+<script>
>+async_test((t) => {
>+  const n = createTestTree(document.querySelector('#test2'));
>+  n.host1.addEventListener('my-event', t.step_func((e) => {
>+    const path_before = e.composedPath();
>+    // Move nodes out of a closed shadow tree
>+    n.host1.append(n.host2);
>+    n.host1.append(n.target);
>+    const path_after = e.composedPath();
>+    assert_array_equals(path_before, path_after);
>+    t.done();
>+  }));
>+  const event = new Event('my-event', { bubbles: true, composed: true });
>+  n.target.dispatchEvent(event);
>+}, 'Event.composedPath() should return the same result even if DOM is mutated (2/2)');
>+</script>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/form-control-form-attribute-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/form-control-form-attribute-expected.txt	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/form-control-form-attribute-expected.txt	(working copy)
>@@ -0,0 +1,7 @@
>+form
>+
>+
>+PASS Form control's form attribute should point to the form element. 
>+FAIL Shadow form control's form attribute should work also in shadow DOM. assert_equals: expected null but got Element node <form id="form">form</form>
>+PASS Form element as form control's ancestor should work also in shadow DOM. 
>+
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/form-control-form-attribute.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/form-control-form-attribute.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/form-control-form-attribute.html	(working copy)
>@@ -0,0 +1,80 @@
>+<!doctype html>
>+<meta charset=utf-8>
>+<title>Form controls' form attribute</title>
>+<script src=/resources/testharness.js></script>
>+<script src=/resources/testharnessreport.js></script>
>+<div id="testcontent">
>+  <form id="form">form</form>
>+  <input id="input" form="form">
>+</div>
>+
>+<script>
>+
>+test(() => {
>+  assert_equals(document.getElementById('input').form,
>+                document.getElementById('form'));
>+}, "Form control's form attribute should point to the form element.");
>+
>+test(() => {
>+  var testcontent = document.getElementById("testcontent");
>+  var host = document.createElement("div");
>+  var sr = host.attachShadow({mode: "open"});
>+  sr.innerHTML = testcontent.innerHTML;
>+  var input = sr.getElementById("input");
>+  var form = sr.getElementById("form");
>+
>+  // Should have null form when shadow DOM isn't connected.
>+  assert_equals(input.form, null);
>+
>+  testcontent.appendChild(host);
>+  assert_equals(input.form, form);
>+
>+  host.remove();
>+  assert_equals(input.form, null);
>+
>+  testcontent.appendChild(host);
>+  assert_equals(input.form, form);
>+
>+  input.remove();
>+  assert_equals(input.form, null);
>+
>+  sr.appendChild(input);
>+  assert_equals(input.form, form);
>+
>+  form.id = "foobar";
>+  assert_equals(input.form, null);
>+
>+  form.id = "form";
>+  assert_equals(input.form, form);
>+
>+  form.remove();
>+  assert_equals(input.form, null);
>+
>+  sr.appendChild(form);
>+  assert_equals(input.form, form);
>+
>+  host.remove();
>+}, "Shadow form control's form attribute should work also in shadow DOM.");
>+
>+test(() => {
>+  var testcontent = document.getElementById("testcontent");
>+  var host = document.createElement("div");
>+  var sr = host.attachShadow({mode: "open"});
>+  sr.innerHTML = "<form id='form'><input id='input'></form>";
>+  var input = sr.getElementById("input");
>+  var form = sr.getElementById("form");
>+
>+  assert_equals(input.form, form);
>+
>+  input.remove();
>+  assert_equals(input.form, null);
>+
>+  form.appendChild(input);
>+  assert_equals(input.form, form);
>+
>+  form.remove();
>+  assert_equals(input.form, form);
>+
>+  host.remove();
>+}, "Form element as form control's ancestor should work also in shadow DOM.");
>+</script>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/getElementById-dynamic-001-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/getElementById-dynamic-001-expected.txt	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/getElementById-dynamic-001-expected.txt	(working copy)
>@@ -0,0 +1,3 @@
>+
>+PASS ShadowRoot.getElementById keeps working after host has been removed 
>+
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/getElementById-dynamic-001.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/getElementById-dynamic-001.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/getElementById-dynamic-001.html	(working copy)
>@@ -0,0 +1,23 @@
>+<!doctype html>
>+<title>Shadow DOM: ShadowRoot.getElementById in shadow trees keeps working after host is removed from tree</title>
>+<link rel="help" href="https://dom.spec.whatwg.org/#dom-nonelementparentnode-getelementbyid">
>+<link rel="help" href="https://bugzil.la/1475203">
>+<link rel="author" name="Emilio Cobos Ãlvarez" href="emilio@crisal.io">
>+<script src="/resources/testharness.js"></script>
>+<script src="/resources/testharnessreport.js"></script>
>+<div id="host"></div>
>+<script>
>+test(function() {
>+  let host = document.getElementById("host");
>+  host.attachShadow({ mode: "open" }).innerHTML = `<div id="test-id"></div>`;
>+
>+  let element = host.shadowRoot.getElementById("test-id");
>+  assert_true(!!element);
>+
>+  host.remove();
>+  assert_equals(host.shadowRoot.getElementById("test-id"), element);
>+
>+  element.remove();
>+  assert_equals(host.shadowRoot.getElementById("test-id"), null);
>+}, "ShadowRoot.getElementById keeps working after host has been removed");
>+</script>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/input-element-list-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/input-element-list-expected.txt	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/input-element-list-expected.txt	(working copy)
>@@ -0,0 +1,5 @@
>+
>+
>+FAIL Input element's list attribute should point to the datalist element. assert_equals: expected (object) null but got (undefined) undefined
>+FAIL Input element's list attribute should point to the datalist element in Shadow DOM. assert_equals: expected (object) null but got (undefined) undefined
>+
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/input-element-list.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/input-element-list.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/input-element-list.html	(working copy)
>@@ -0,0 +1,39 @@
>+<!doctype html>
>+<meta charset=utf-8>
>+<title>Input.list</title>
>+<script src=/resources/testharness.js></script>
>+<script src=/resources/testharnessreport.js></script>
>+<div id="testcontent">
>+  <input id="input" list="datalist">
>+</div>
>+<script>
>+
>+test(() => {
>+  assert_equals(document.getElementById('input').list, null);
>+  var dl = document.createElement("datalist");
>+  dl.id = "datalist";
>+  document.getElementById("testcontent").appendChild(dl);
>+  assert_equals(document.getElementById('input').list, dl);
>+}, "Input element's list attribute should point to the datalist element.");
>+
>+
>+test(() => {
>+  var host = document.createElement("div");
>+  document.getElementById("testcontent").appendChild(host);
>+  var sr = host.attachShadow({mode: "open"});
>+  var input = document.createElement("input");
>+  input.setAttribute("list", "datalist");
>+  sr.appendChild(input);
>+  assert_equals(input.list, null);
>+
>+  var dl = document.createElement("datalist");
>+  dl.id = "datalist";
>+  sr.appendChild(dl);
>+  assert_equals(input.list, dl);
>+
>+  dl.remove();
>+  assert_equals(input.list, null);
>+}, "Input element's list attribute should point to the datalist element in Shadow DOM.");
>+
>+
>+</script>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-assigned-expected.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-assigned-expected.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-assigned-expected.html	(working copy)
>@@ -0,0 +1 @@
>+<!DOCTYPE html>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-assigned.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-assigned.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-assigned.html	(working copy)
>@@ -0,0 +1,15 @@
>+<!DOCTYPE html>
>+<title>Layout using slot elements</title>
>+<link rel="author" title="Hayato Ito" href="mailto:hayato@google.com"/>
>+<link rel="help" href="https://dom.spec.whatwg.org/#shadow-tree-slots">
>+<link rel="match" href="reference/empty.html"/>
>+<div id="host"></div>
>+<script>
>+const host = document.querySelector('#host');
>+const sr = host.attachShadow({ mode: 'open' });
>+sr.innerHTML = '<slot name=s1></slot>'
>+host.innerHTML = '<div id=d1 slot=s1></div>';
>+
>+document.body.offsetLeft;
>+document.querySelector('#d1').setAttribute('slot', 's2');
>+</script>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-fallback-expected.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-fallback-expected.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-fallback-expected.html	(working copy)
>@@ -0,0 +1 @@
>+<!DOCTYPE html>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-fallback.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-fallback.html	(nonexistent)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-fallback.html	(working copy)
>@@ -0,0 +1,15 @@
>+<!DOCTYPE html>
>+<title>Layout using slot elements</title>
>+<link rel="author" title="Hayato Ito" href="mailto:hayato@google.com"/>
>+<link rel="help" href="https://dom.spec.whatwg.org/#shadow-tree-slots">
>+<link rel="match" href="reference/empty.html"/>
>+<div id="host"></div>
>+<script>
>+const host = document.querySelector('#host');
>+const sr = host.attachShadow({ mode: 'open' });
>+
>+sr.innerHTML = '<slot><div id="fallback">Should not be displayed</div></slot>'
>+
>+document.body.offsetLeft;
>+host.appendChild(document.createElement('div'));
>+</script>
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/w3c-import.log
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/w3c-import.log	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/w3c-import.log	(working copy)
>@@ -1,7 +1,7 @@
> The tests in this directory were imported from the W3C repository.
> Do NOT modify these tests directly in WebKit.
> Instead, create a pull request on the WPT github:
>-	https://github.com/w3c/web-platform-tests
>+	https://github.com/web-platform-tests/wpt
> 
> Then run the Tools/Scripts/import-w3c-tests in WebKit to reimport
> 
>@@ -17,16 +17,21 @@ List of files:
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Document-prototype-adoptNode.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Document-prototype-currentScript.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Document-prototype-importNode.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/DocumentOrShadowRoot-prototype-elementFromPoint.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow-custom-element.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-attachShadow.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Element-interface-shadowRoot-attribute.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Extensions-to-Event-Interface.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/HTMLSlotElement-interface.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/META.yml
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/MouseEvent-prototype-offsetX-offsetY.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Node-prototype-cloneNode.html
>-/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/OWNERS
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Range-prototype-insertNode.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/ShadowRoot-interface.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/Slotable-interface.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/directionality-001.tentative-expected.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/directionality-001.tentative.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-composed-path-after-dom-mutation.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-composed-path-with-related-target.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-composed-path.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-composed.html
>@@ -34,7 +39,14 @@ List of files:
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-inside-slotted-node.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-post-dispatch.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/event-with-related-target.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/form-control-form-attribute.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/getElementById-dynamic-001.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/historical.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/input-element-list.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-assigned-expected.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-assigned.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-fallback-expected.html
>+/LayoutTests/imported/w3c/web-platform-tests/shadow-dom/layout-slot-no-longer-fallback.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/scroll-to-the-fragment-in-shadow-tree.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/slotchange-customelements.html
> /LayoutTests/imported/w3c/web-platform-tests/shadow-dom/slotchange-event.html
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/leaktests/get-elements-expected.txt
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/leaktests/get-elements-expected.txt	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/leaktests/get-elements-expected.txt	(working copy)
>@@ -1,7 +1,7 @@
> 
> PASS getElementsById() should not leak nodes in shadow tree 
>-FAIL getElementsByClassName() should not leak nodes in shadow tree assert_array_equals: value is 0, expected array
>-FAIL getElementsByName() should not leak nodes in shadow tree assert_array_equals: value is 0, expected array
>-FAIL getElementsByTagName() should not leak nodes in shadow tree assert_array_equals: value is 0, expected array
>+PASS getElementsByClassName() should not leak nodes in shadow tree 
>+PASS getElementsByName() should not leak nodes in shadow tree 
>+PASS getElementsByTagName() should not leak nodes in shadow tree 
> PASS getElementsByTagNameNS() should not leak nodes in shadow tree 
> 
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/leaktests/get-elements.html
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/leaktests/get-elements.html	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/leaktests/get-elements.html	(working copy)
>@@ -85,12 +85,12 @@ test(function() {
>     assert_equals(doc.querySelectorAll('.bar').length, 1);
>     assert_equals(doc.getElementsByClassName('bar')[0].getAttribute('label'), 'doc-div');
> 
>-    assert_array_equals(hostOpen.querySelectorAll('.bar').length, 0);
>+    assert_equals(hostOpen.querySelectorAll('.bar').length, 0);
> 
>     assert_equals(shadowOpen.querySelectorAll('.bar').length, 1);
>     assert_equals(shadowOpen.querySelectorAll('.bar')[0].getAttribute('label'), 'shadow-open-div');
> 
>-    assert_array_equals(hostClosed.querySelectorAll('.bar').length, 0);
>+    assert_equals(hostClosed.querySelectorAll('.bar').length, 0);
> 
>     assert_equals(shadowClosed.querySelectorAll('.bar').length, 1);
>     assert_equals(shadowClosed.querySelectorAll('.bar')[0].getAttribute('label'), 'shadow-closed-div');
>@@ -106,11 +106,11 @@ test(function() {
> 
>     assert_equals(doc.querySelectorAll('[name=baz]').length, 1);
> 
>-    assert_array_equals(hostOpen.querySelectorAll('[name=baz]').length, 0);
>+    assert_equals(hostOpen.querySelectorAll('[name=baz]').length, 0);
>     assert_equals(shadowOpen.querySelectorAll('[name=baz]').length, 1);
>     assert_equals(shadowOpen.querySelectorAll('[name=baz]')[0].getAttribute('label'), 'shadow-open-form');
> 
>-    assert_array_equals(hostClosed.querySelectorAll('[name=baz]').length, 0);
>+    assert_equals(hostClosed.querySelectorAll('[name=baz]').length, 0);
>     assert_equals(shadowClosed.querySelectorAll('[name=baz]').length, 1);
>     assert_equals(shadowClosed.querySelectorAll('[name=baz]')[0].getAttribute('label'), 'shadow-closed-form');
> }, 'getElementsByName() should not leak nodes in shadow tree');
>@@ -126,12 +126,12 @@ test(function() {
>     assert_equals(doc.querySelectorAll('my-element').length, 1);
>     assert_equals(doc.getElementsByTagName('my-element')[0].getAttribute('label'), 'doc-my-element');
> 
>-    assert_array_equals(hostOpen.querySelectorAll('my-element').length, 0);
>+    assert_equals(hostOpen.querySelectorAll('my-element').length, 0);
>     // ShadowRoot isn't an Element, does not have getElementsByTagName().
>     assert_equals(shadowOpen.querySelectorAll('my-element').length, 1);
>     assert_equals(shadowOpen.querySelectorAll('my-element')[0].getAttribute('label'), 'shadow-open-my-element');
> 
>-    assert_array_equals(hostClosed.querySelectorAll('my-element').length, 0);
>+    assert_equals(hostClosed.querySelectorAll('my-element').length, 0);
>     assert_equals(shadowClosed.querySelectorAll('my-element').length, 1);
>     assert_equals(shadowClosed.querySelectorAll('my-element')[0].getAttribute('label'), 'shadow-closed-my-element');
> }, 'getElementsByTagName() should not leak nodes in shadow tree');
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/leaktests/w3c-import.log
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/leaktests/w3c-import.log	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/leaktests/w3c-import.log	(working copy)
>@@ -1,7 +1,7 @@
> The tests in this directory were imported from the W3C repository.
> Do NOT modify these tests directly in WebKit.
> Instead, create a pull request on the WPT github:
>-	https://github.com/w3c/web-platform-tests
>+	https://github.com/web-platform-tests/wpt
> 
> Then run the Tools/Scripts/import-w3c-tests in WebKit to reimport
> 
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/resources/event-path-test-helpers.js
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/resources/event-path-test-helpers.js	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/resources/event-path-test-helpers.js	(working copy)
>@@ -16,9 +16,6 @@ function dispatchEventWithEventLog(shado
>                 eventPath.push(this.label);
>                 relatedTargets.push(event.relatedTarget ? event.relatedTarget.label : null);
> 
>-                if (!event.composedPath) // Don't fail all tests just for the lack of composedPath.
>-                    return;
>-
>                 pathAtTargets.push(event.composedPath().map(function (node) { return node.label; }));
>                 targets.push(event.target);
>             }).bind(node));
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/resources/shadow-dom-utils.js
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/resources/shadow-dom-utils.js	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/resources/shadow-dom-utils.js	(working copy)
>@@ -59,6 +59,8 @@ var HTML5_ELEMENT_NAMES = [
>     'wbr'
> ];
> 
>+var ATTACHSHADOW_DISALLOWED_ELEMENTS = HTML5_ELEMENT_NAMES.filter(el => !ATTACHSHADOW_SAFELISTED_ELEMENTS.includes(el));
>+
> function unit(f) {
>     return function () {
>         var ctx = newContext();
>Index: LayoutTests/imported/w3c/web-platform-tests/shadow-dom/resources/w3c-import.log
>===================================================================
>--- LayoutTests/imported/w3c/web-platform-tests/shadow-dom/resources/w3c-import.log	(revision 235880)
>+++ LayoutTests/imported/w3c/web-platform-tests/shadow-dom/resources/w3c-import.log	(working copy)
>@@ -1,7 +1,7 @@
> The tests in this directory were imported from the W3C repository.
> Do NOT modify these tests directly in WebKit.
> Instead, create a pull request on the WPT github:
>-	https://github.com/w3c/web-platform-tests
>+	https://github.com/web-platform-tests/wpt
> 
> Then run the Tools/Scripts/import-w3c-tests in WebKit to reimport
>

Flags:

youennf: review+

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Attachments on bug 189494: 349374 | 349375