Attachment 349288 Details for Bug 189458 – Patch

[patch] Patch

bug-189458-20180909114638.patch (text/plain), 21.12 KB, created by Andy Estes on 2018-09-09 11:46:45 PDT

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Creator: Andy Estes

Created: 2018-09-09 11:46:45 PDT

Size: 21.12 KB

patch

obsolete

>Subversion Revision: 235833
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index 8375217f8686e250bb3a23429f0200fb573ffe7e..bb59549954cda9c0849152b0aedeba9c70fb9123 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,46 @@
>+2018-09-08  Andy Estes  <aestes@apple.com>
>+
>+        [Payment Request] Use JSValueInWrappedObject for PaymentResponse's details attribute
>+        https://bugs.webkit.org/show_bug.cgi?id=189458
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Test: http/tests/paymentrequest/payment-response-reference-cycle-leak.https.html
>+
>+        * Modules/applepay/paymentrequest/ApplePayPaymentHandler.cpp:
>+        (WebCore::ApplePayPaymentHandler::didAuthorizePayment):
>+
>+        Created a PaymentResponse::DetailsFunction that converts the ApplePayPayment into a JSValue.
>+
>+        * Modules/paymentrequest/PaymentRequest.cpp:
>+        (WebCore::PaymentRequest::accept):
>+
>+        Passed detailsFunction into PaymentResponse::create().
>+
>+        * Modules/paymentrequest/PaymentRequest.h:
>+        * Modules/paymentrequest/PaymentResponse.cpp:
>+        (WebCore::PaymentResponse::PaymentResponse):
>+        * Modules/paymentrequest/PaymentResponse.h:
>+        * Modules/paymentrequest/PaymentResponse.idl:
>+
>+        Removed m_details and replaced it with a DetailsFunction and a cached JSValueInWrappedObject.
>+        JSPaymentResponseCustom.cpp uses these values to implement the details attribute getter.
>+
>+        * Sources.txt:
>+        * WebCore.xcodeproj/project.pbxproj:
>+        * bindings/js/JSPaymentResponseCustom.cpp: Added.
>+        (WebCore::JSPaymentResponse::details const):
>+
>+        Called PaymentResponse::detailsFunction() to cache a JSValue for the details attribute.
>+
>+        (WebCore::JSPaymentResponse::visitAdditionalChildren):
>+
>+        Visited PaymentResponse::cachedDetails().
>+
>+        * bindings/js/JSServiceWorkerClientCustom.cpp:
>+
>+        Fixed a missing include issue that cropped up due to unified source shuffling.
>+
> 2018-09-08  Andy Estes  <aestes@apple.com>
> 
>         [Apple Pay] Dispatch a paymentmethodchange event when the payment method changes
>diff --git a/Source/WebCore/Modules/applepay/paymentrequest/ApplePayPaymentHandler.cpp b/Source/WebCore/Modules/applepay/paymentrequest/ApplePayPaymentHandler.cpp
>index 46ebd0f05a59992a53e70f574c73ae71e985e687..78312a496f9bd3f7f54d8185686c3584cd02677a 100644
>--- a/Source/WebCore/Modules/applepay/paymentrequest/ApplePayPaymentHandler.cpp
>+++ b/Source/WebCore/Modules/applepay/paymentrequest/ApplePayPaymentHandler.cpp
>@@ -453,9 +453,12 @@ void ApplePayPaymentHandler::didAuthorizePayment(const Payment& payment)
>     ASSERT(!m_isUpdating);
> 
>     auto applePayPayment = payment.toApplePayPayment(version());
>-    auto details = toJSDictionary(*document().execState(), applePayPayment);
>-    const auto& shippingContact = applePayPayment.shippingContact.value_or(ApplePayPaymentContact());
>-    m_paymentRequest->accept(WTF::get<URL>(m_identifier).string(), WTFMove(details), convert(shippingContact), shippingContact.localizedName, shippingContact.emailAddress, shippingContact.phoneNumber);
>+    auto shippingContact = applePayPayment.shippingContact.value_or(ApplePayPaymentContact());
>+    auto detailsFunction = [applePayPayment = WTFMove(applePayPayment)](JSC::ExecState& execState) {
>+        return toJSDictionary(execState, applePayPayment);
>+    };
>+
>+    m_paymentRequest->accept(WTF::get<URL>(m_identifier).string(), WTFMove(detailsFunction), convert(shippingContact), shippingContact.localizedName, shippingContact.emailAddress, shippingContact.phoneNumber);
> }
> 
> void ApplePayPaymentHandler::didSelectShippingMethod(const ApplePaySessionPaymentRequest::ShippingMethod& shippingMethod)
>diff --git a/Source/WebCore/Modules/paymentrequest/PaymentRequest.cpp b/Source/WebCore/Modules/paymentrequest/PaymentRequest.cpp
>index 6e3181f07f1000233e2d0b158f9d727f0df34e69..f3f9656c14003b2bb515774718911bc575ba775c 100644
>--- a/Source/WebCore/Modules/paymentrequest/PaymentRequest.cpp
>+++ b/Source/WebCore/Modules/paymentrequest/PaymentRequest.cpp
>@@ -42,7 +42,6 @@
> #include "PaymentMethodData.h"
> #include "PaymentOptions.h"
> #include "PaymentRequestUpdateEvent.h"
>-#include "PaymentResponse.h"
> #include "ScriptController.h"
> #include <JavaScriptCore/JSONObject.h>
> #include <JavaScriptCore/ThrowScope.h>
>@@ -683,14 +682,13 @@ void PaymentRequest::whenDetailsSettled(std::function<void()>&& callback)
>     });
> }
> 
>-void PaymentRequest::accept(const String& methodName, JSC::Strong<JSC::JSObject>&& details, Ref<PaymentAddress>&& shippingAddress, const String& payerName, const String& payerEmail, const String& payerPhone)
>+void PaymentRequest::accept(const String& methodName, PaymentResponse::DetailsFunction&& detailsFunction, Ref<PaymentAddress>&& shippingAddress, const String& payerName, const String& payerEmail, const String& payerPhone)
> {
>     ASSERT(m_state == State::Interactive);
> 
>-    auto response = PaymentResponse::create(*this);
>+    auto response = PaymentResponse::create(*this, WTFMove(detailsFunction));
>     response->setRequestId(m_details.id);
>     response->setMethodName(methodName);
>-    response->setDetails(WTFMove(details));
> 
>     if (m_options.requestShipping) {
>         response->setShippingAddress(shippingAddress.ptr());
>diff --git a/Source/WebCore/Modules/paymentrequest/PaymentRequest.h b/Source/WebCore/Modules/paymentrequest/PaymentRequest.h
>index e532a60b2ae8de66681006e08625a3d5f086a08e..8ef8c089189d595c55d34f02968dcafadc3b91db 100644
>--- a/Source/WebCore/Modules/paymentrequest/PaymentRequest.h
>+++ b/Source/WebCore/Modules/paymentrequest/PaymentRequest.h
>@@ -34,6 +34,7 @@
> #include "PaymentDetailsInit.h"
> #include "PaymentMethodChangeEvent.h"
> #include "PaymentOptions.h"
>+#include "PaymentResponse.h"
> #include "URL.h"
> #include <wtf/Variant.h>
> 
>@@ -91,7 +92,7 @@ public:
>     void paymentMethodChanged(const String& methodName, PaymentMethodChangeEvent::MethodDetailsFunction&&);
>     ExceptionOr<void> updateWith(UpdateReason, Ref<DOMPromise>&&);
>     ExceptionOr<void> completeMerchantValidation(Event&, Ref<DOMPromise>&&);
>-    void accept(const String& methodName, JSC::Strong<JSC::JSObject>&& details, Ref<PaymentAddress>&& shippingAddress, const String& payerName, const String& payerEmail, const String& payerPhone);
>+    void accept(const String& methodName, PaymentResponse::DetailsFunction&&, Ref<PaymentAddress>&& shippingAddress, const String& payerName, const String& payerEmail, const String& payerPhone);
>     void complete(std::optional<PaymentComplete>&&);
>     void cancel();
> 
>diff --git a/Source/WebCore/Modules/paymentrequest/PaymentResponse.cpp b/Source/WebCore/Modules/paymentrequest/PaymentResponse.cpp
>index 0f16d6f859ce30ba23cef6ed47bb413e5070e1ec..8287d7bb2940255bd2c6736960591fea1bccb5e9 100644
>--- a/Source/WebCore/Modules/paymentrequest/PaymentResponse.cpp
>+++ b/Source/WebCore/Modules/paymentrequest/PaymentResponse.cpp
>@@ -34,9 +34,11 @@
> 
> namespace WebCore {
> 
>-PaymentResponse::PaymentResponse(PaymentRequest& request)
>+PaymentResponse::PaymentResponse(PaymentRequest& request, DetailsFunction&& detailsFunction)
>     : m_request { request }
>+    , m_detailsFunction { WTFMove(detailsFunction) }
> {
>+    ASSERT(m_detailsFunction);
> }
> 
> PaymentResponse::~PaymentResponse() = default;
>diff --git a/Source/WebCore/Modules/paymentrequest/PaymentResponse.h b/Source/WebCore/Modules/paymentrequest/PaymentResponse.h
>index 9609b8de9f8007b485a10365d5c2b0d683f8df32..449eff0a5202f2da95ab3f3594e134388e118ab3 100644
>--- a/Source/WebCore/Modules/paymentrequest/PaymentResponse.h
>+++ b/Source/WebCore/Modules/paymentrequest/PaymentResponse.h
>@@ -29,6 +29,7 @@
> 
> #include "EventTarget.h"
> #include "JSDOMPromiseDeferred.h"
>+#include "JSValueInWrappedObject.h"
> #include "PaymentAddress.h"
> #include "PaymentComplete.h"
> 
>@@ -40,9 +41,11 @@ struct PaymentValidationErrors;
> 
> class PaymentResponse final : public RefCounted<PaymentResponse>, public EventTargetWithInlineData {
> public:
>-    static Ref<PaymentResponse> create(PaymentRequest& request)
>+    using DetailsFunction = Function<JSC::Strong<JSC::JSObject>(JSC::ExecState&)>;
>+
>+    static Ref<PaymentResponse> create(PaymentRequest& request, DetailsFunction&& detailsFunction)
>     {
>-        return adoptRef(*new PaymentResponse(request));
>+        return adoptRef(*new PaymentResponse(request, WTFMove(detailsFunction)));
>     }
> 
>     ~PaymentResponse();
>@@ -53,8 +56,8 @@ public:
>     const String& methodName() const { return m_methodName; }
>     void setMethodName(const String& methodName) { m_methodName = methodName; }
> 
>-    const JSC::Strong<JSC::JSObject>& details() const { return m_details; }
>-    void setDetails(JSC::Strong<JSC::JSObject>&& details) { m_details = WTFMove(details); }
>+    const DetailsFunction& detailsFunction() const { return m_detailsFunction; }
>+    JSValueInWrappedObject& cachedDetails() { return m_cachedDetails; }
> 
>     PaymentAddress* shippingAddress() const { return m_shippingAddress.get(); }
>     void setShippingAddress(PaymentAddress* shippingAddress) { m_shippingAddress = shippingAddress; }
>@@ -78,7 +81,7 @@ public:
>     using RefCounted<PaymentResponse>::deref;
> 
> private:
>-    explicit PaymentResponse(PaymentRequest&);
>+    PaymentResponse(PaymentRequest&, DetailsFunction&&);
> 
>     // EventTarget
>     EventTargetInterface eventTargetInterface() const final { return PaymentResponseEventTargetInterfaceType; }
>@@ -89,9 +92,8 @@ private:
>     Ref<PaymentRequest> m_request;
>     String m_requestId;
>     String m_methodName;
>-    // FIXME: The following use of JSC::Strong is incorrect and can lead to storage leaks
>-    // due to reference cycles; we should use JSValueInWrappedObject instead.
>-    JSC::Strong<JSC::JSObject> m_details;
>+    DetailsFunction m_detailsFunction;
>+    JSValueInWrappedObject m_cachedDetails;
>     RefPtr<PaymentAddress> m_shippingAddress;
>     String m_shippingOption;
>     String m_payerName;
>diff --git a/Source/WebCore/Modules/paymentrequest/PaymentResponse.idl b/Source/WebCore/Modules/paymentrequest/PaymentResponse.idl
>index 7210dd84239e328c30d13e8e07f419c7b3cdd316..8e1532aabd4ea7c3a915dfdc2ae913e4ce6362d3 100644
>--- a/Source/WebCore/Modules/paymentrequest/PaymentResponse.idl
>+++ b/Source/WebCore/Modules/paymentrequest/PaymentResponse.idl
>@@ -27,13 +27,14 @@
>     Conditional=PAYMENT_REQUEST,
>     EnabledBySetting=PaymentRequest,
>     Exposed=Window,
>+    JSCustomMarkFunction,
>     SecureContext,
> ] interface PaymentResponse : EventTarget {
>     serializer = { attribute };
> 
>     readonly attribute DOMString requestId;
>     readonly attribute DOMString methodName;
>-    readonly attribute object details;
>+    [CustomGetter] readonly attribute object details;
>     readonly attribute PaymentAddress? shippingAddress;
>     readonly attribute DOMString? shippingOption;
>     readonly attribute DOMString? payerName;
>diff --git a/Source/WebCore/Sources.txt b/Source/WebCore/Sources.txt
>index b065ff85f2798d1b1fb64140fe3d371880c5c64c..7801b309938570718d9a774c01542379a2a6dcb9 100644
>--- a/Source/WebCore/Sources.txt
>+++ b/Source/WebCore/Sources.txt
>@@ -430,6 +430,7 @@ bindings/js/JSNodeIteratorCustom.cpp
> bindings/js/JSNodeListCustom.cpp
> bindings/js/JSOffscreenCanvasRenderingContext2DCustom.cpp
> bindings/js/JSPaymentMethodChangeEventCustom.cpp
>+bindings/js/JSPaymentResponseCustom.cpp
> bindings/js/JSPerformanceEntryCustom.cpp
> bindings/js/JSPerformanceObserverCustom.cpp
> bindings/js/JSPluginElementFunctions.cpp
>diff --git a/Source/WebCore/WebCore.xcodeproj/project.pbxproj b/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>index 99c6b6b9d05a3cc44fb979383a15cda6ac43ecd8..9e5aaba8ad4d0bc7193f4e48a60ce960a32f2258 100644
>--- a/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>+++ b/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>@@ -10879,6 +10879,7 @@
> 		A10BB5831484E3A700B2E87A /* RenderSVGRect.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RenderSVGRect.h; sourceTree = "<group>"; };
> 		A10BB5881484E3B300B2E87A /* RenderSVGShape.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = RenderSVGShape.cpp; sourceTree = "<group>"; };
> 		A10BB5891484E3B300B2E87A /* RenderSVGShape.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RenderSVGShape.h; sourceTree = "<group>"; };
>+		A10D6E942144C99800FDD14D /* JSPaymentResponseCustom.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = JSPaymentResponseCustom.cpp; sourceTree = "<group>"; };
> 		A10DBF4618F92317000D70C6 /* PreviewLoaderClient.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PreviewLoaderClient.h; sourceTree = "<group>"; };
> 		A10DC76814747BAB005E2471 /* StyleGridData.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = StyleGridData.cpp; sourceTree = "<group>"; };
> 		A10DC76914747BAB005E2471 /* StyleGridData.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = StyleGridData.h; sourceTree = "<group>"; };
>@@ -19943,6 +19944,7 @@
> 				BCE7B1920D4E86960075A539 /* JSHistoryCustom.cpp */,
> 				410B7E711045FAB000D8224F /* JSMessageEventCustom.cpp */,
> 				A1677E242144532800A08C34 /* JSPaymentMethodChangeEventCustom.cpp */,
>+				A10D6E942144C99800FDD14D /* JSPaymentResponseCustom.cpp */,
> 				A85F22081430377D007CC884 /* JSPopStateEventCustom.cpp */,
> 				BC348BBD0DB7F531004ABAB9 /* JSXMLHttpRequestCustom.cpp */,
> 			);
>diff --git a/Source/WebCore/bindings/js/JSPaymentResponseCustom.cpp b/Source/WebCore/bindings/js/JSPaymentResponseCustom.cpp
>new file mode 100644
>index 0000000000000000000000000000000000000000..c627f39b02bd501de1ddb756f833b86f57f37847
>--- /dev/null
>+++ b/Source/WebCore/bindings/js/JSPaymentResponseCustom.cpp
>@@ -0,0 +1,47 @@
>+/*
>+ * 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.
>+ */
>+
>+#include "config.h"
>+#include "JSPaymentResponse.h"
>+
>+#if ENABLE(PAYMENT_REQUEST)
>+
>+namespace WebCore {
>+
>+JSC::JSValue JSPaymentResponse::details(JSC::ExecState& state) const
>+{
>+    return cachedPropertyValue(state, *this, wrapped().cachedDetails(), [this, &state] {
>+        return wrapped().detailsFunction()(state).get();
>+    });
>+}
>+
>+void JSPaymentResponse::visitAdditionalChildren(JSC::SlotVisitor& visitor)
>+{
>+    wrapped().cachedDetails().visit(visitor);
>+}
>+
>+} // namespace WebCore
>+
>+#endif // ENABLE(PAYMENT_REQUEST)
>diff --git a/Source/WebCore/bindings/js/JSServiceWorkerClientCustom.cpp b/Source/WebCore/bindings/js/JSServiceWorkerClientCustom.cpp
>index 58eea3db5b6527685217b144d0d25b38af7f7d27..8d4c5aa54eaed7452bcddc40e7a20281867f5000 100644
>--- a/Source/WebCore/bindings/js/JSServiceWorkerClientCustom.cpp
>+++ b/Source/WebCore/bindings/js/JSServiceWorkerClientCustom.cpp
>@@ -28,6 +28,7 @@
> #if ENABLE(SERVICE_WORKER)
> #include "JSServiceWorkerClient.h"
> 
>+#include "JSDOMBinding.h"
> #include "JSServiceWorkerWindowClient.h"
> 
> namespace WebCore {
>diff --git a/LayoutTests/ChangeLog b/LayoutTests/ChangeLog
>index 9caf072bc0c85baf1ae463b76050a7aa6738a3cd..6e683989b0f9c242dfbd4b66e6f944eccad30fd5 100644
>--- a/LayoutTests/ChangeLog
>+++ b/LayoutTests/ChangeLog
>@@ -1,3 +1,14 @@
>+2018-09-08  Andy Estes  <aestes@apple.com>
>+
>+        [Payment Request] Use JSValueInWrappedObject for PaymentResponse's details attribute
>+        https://bugs.webkit.org/show_bug.cgi?id=189458
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * fast/dom/reference-cycle-leaks.html:
>+        * http/tests/paymentrequest/payment-response-reference-cycle-leak.https-expected.txt: Added.
>+        * http/tests/paymentrequest/payment-response-reference-cycle-leak.https.html: Added.
>+
> 2018-09-08  Andy Estes  <aestes@apple.com>
> 
>         [Apple Pay] Dispatch a paymentmethodchange event when the payment method changes
>diff --git a/LayoutTests/fast/dom/reference-cycle-leaks.html b/LayoutTests/fast/dom/reference-cycle-leaks.html
>index 6123965c10ffe421d3b32b01faecf88bf103eb85..f71e0d5f9bba6116a1dc0805ac1d86fe378abc07 100644
>--- a/LayoutTests/fast/dom/reference-cycle-leaks.html
>+++ b/LayoutTests/fast/dom/reference-cycle-leaks.html
>@@ -125,13 +125,8 @@ function createIDBRequestResultCycle()
>     // Add another property to the result object that references a leak detection node.
> }
> 
>-function createPaymentResponseDetailsCycle()
>-{
>-    // FIXME: Need to write this test and reorganize so it can be asynchronous.
>-    // Get a PaymentResponse, requires simulating a successful payment.
>-    // Add a property to the details object that references the PaymentResponse.
>-    // Add another property to the details object that references a leak detection node.
>-}
>+// PaymentResponse details reference cycle is tested in
>+// http/tests/paymentrequest/payment-response-reference-cycle-leak.https.html.
> 
> function createRTCStatsReportCycle()
> {
>diff --git a/LayoutTests/http/tests/paymentrequest/payment-response-reference-cycle-leak.https-expected.txt b/LayoutTests/http/tests/paymentrequest/payment-response-reference-cycle-leak.https-expected.txt
>new file mode 100644
>index 0000000000000000000000000000000000000000..256c4da29ea17844367f06b34a57c9c923eea282
>--- /dev/null
>+++ b/LayoutTests/http/tests/paymentrequest/payment-response-reference-cycle-leak.https-expected.txt
>@@ -0,0 +1,3 @@
>+
>+PASS PaymentResponse should not leak when there is a reference cycle due to the details attribute 
>+
>diff --git a/LayoutTests/http/tests/paymentrequest/payment-response-reference-cycle-leak.https.html b/LayoutTests/http/tests/paymentrequest/payment-response-reference-cycle-leak.https.html
>new file mode 100644
>index 0000000000000000000000000000000000000000..ee8fcb6703a3336461fd368cb3f96fd550f4d271
>--- /dev/null
>+++ b/LayoutTests/http/tests/paymentrequest/payment-response-reference-cycle-leak.https.html
>@@ -0,0 +1,72 @@
>+<!DOCTYPE html>
>+<meta charset="utf-8">
>+<title>Test for leaks caused by reference cycles that pass through PaymentResponse</title>
>+<script src="/js-test-resources/ui-helper.js"></script>
>+<script src="/resources/payment-request.js"></script>
>+<script src="/resources/testharness.js"></script>
>+<script src="/resources/testharnessreport.js"></script>
>+<body>
>+<script>
>+async function checkForNodeLeaks(testFunction, underlyingClass)
>+{
>+    // Bump this number as high as we need to, to get reproducible results.
>+    const repetitions = 40;
>+
>+    GCController.collect();
>+    const beforeCount = internals.numberOfLiveNodes();
>+    for (var i = 0; i < repetitions; ++i)
>+        await testFunction();
>+    GCController.collect();
>+    const leaks = internals.numberOfLiveNodes() - beforeCount;
>+
>+    if (leaks == repetitions)
>+        return "leaked";
>+    if (leaks < repetitions / 10)
>+        return "did not leak";
>+    return "leaked an unexpected number of nodes: " + leaks + " leaks in " + repetitions + " runs";
>+}
>+
>+async function createPaymentResponseDetailsCycle()
>+{
>+    const applePay = {
>+        supportedMethods: "https://apple.com/apple-pay",
>+        data: {
>+            version: 2,
>+            merchantIdentifier: '',
>+            merchantCapabilities: ['supports3DS'],
>+            supportedNetworks: ['visa', 'masterCard'],
>+            countryCode: 'US',
>+        },
>+    };
>+
>+    const details = {
>+        total: {
>+            label: "Total",
>+            amount: {
>+                currency: "USD",
>+                value: "1.00",
>+            },
>+        },
>+    };
>+
>+    const paymentRequest = new PaymentRequest([applePay], details); 
>+    await activateThen(async () => {
>+        const acceptPromise = paymentRequest.show();
>+        internals.mockPaymentCoordinator.acceptPayment();
>+        const result = await acceptPromise;
>+
>+        const leakDetectionNode = document.createTextNode("");
>+        const details = result.details;
>+        leakDetectionNode.details = details;
>+        details.leakDetectionNode = leakDetectionNode;
>+
>+        result.complete("success");
>+    });
>+}
>+
>+promise_test(async t => {
>+    const result = await checkForNodeLeaks(createPaymentResponseDetailsCycle);
>+    assert_equals(result, 'did not leak');
>+}, "PaymentResponse should not leak when there is a reference cycle due to the details attribute");
>+
>+</script>

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Attachments on bug 189458: 349277 | 349280 | 349283 | 349284 | 349288 | 349290