| <!DOCTYPE html> |
| <script src="../../resources/js-test.js"></script> |
| <script> |
| |
| description('Tests for leaks caused by reference cycles that pass through the DOM implementation'); |
| |
| function checkForNodeLeaks(testFunction, underlyingClass) |
| { |
| // Bump this number as high as we need to, to get reproducible results. |
| const repetitions = 40; |
| |
| gc(); |
| const beforeCount = internals.numberOfLiveNodes(); |
| for (var i = 0; i < repetitions; ++i) |
| testFunction(); |
| gc(); |
| 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"; |
| } |
| |
| function emptyFunction() |
| { |
| } |
| |
| function createNode() |
| { |
| document.createTextNode(""); |
| } |
| |
| function createEventListenerCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| leakDetectionNode.addEventListener("x", function () { return leakDetectionNode; }); |
| } |
| |
| function createPromiseCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| const promise = new Promise(function (resolve, reject) { }); |
| promise.cycle = promise; |
| promise.leakDetectionNode = leakDetectionNode; |
| } |
| |
| function createTreeWalkerNodeCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| leakDetectionNode.treeWalker = document.createTreeWalker(leakDetectionNode); |
| } |
| |
| function createTreeWalkerFilterCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| const filter = { leakDetectionNode: leakDetectionNode, acceptNode: function(node) { return leakDetectionNode; } }; |
| leakDetectionNode.treeWalker = document.createTreeWalker(document, 0, filter); |
| } |
| |
| function createRangeCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| const range = new Range(); |
| range.setStart(leakDetectionNode, 0); |
| leakDetectionNode.range = range; |
| } |
| |
| function createStaticRangeCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| leakDetectionNode.staticRange = new StaticRange({startContainer: leakDetectionNode, startOffset: 0, endContainer: leakDetectionNode, endOffset: 0}); |
| } |
| |
| function createCustomEventDetailsCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| leakDetectionNode.event = new CustomEvent("x", { detail: leakDetectionNode }); |
| } |
| |
| function createErrorEventDataCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| leakDetectionNode.event = new ErrorEvent("x", { error: leakDetectionNode }); |
| } |
| |
| function createExtendableMessageEventDataCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| leakDetectionNode.event = new ExtendableMessageEvent("x", { data: leakDetectionNode }); |
| } |
| |
| function createMessageEventDataCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| leakDetectionNode.event = new MessageEvent("x", { data: leakDetectionNode }); |
| } |
| |
| function createPaymentMethodChangeEventMethodDetailsCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| leakDetectionNode.event = new PaymentMethodChangeEvent("x", { methodDetails: leakDetectionNode }); |
| } |
| |
| function createPromiseRejectionEventPromiseCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| const promise = new Promise(function (resolve, reject) { }); |
| promise.leakDetectionNode = leakDetectionNode; |
| leakDetectionNode.event = new PromiseRejectionEvent("x", { promise: promise }); |
| } |
| |
| function createPromiseRejectionEventPromiseFunctionCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| const promise = new Promise(function (resolve, reject) { return leakDetectionNode; }); |
| leakDetectionNode.event = new PromiseRejectionEvent("x", { promise: promise }); |
| } |
| |
| function createPromiseRejectionEventReasonCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| const promise = new Promise(function (resolve, reject) { }); |
| leakDetectionNode.event = new PromiseRejectionEvent("x", { promise: promise, reason: leakDetectionNode }); |
| } |
| |
| function createPopStateEventStateCycle() |
| { |
| const leakDetectionNode = document.createTextNode(""); |
| leakDetectionNode.event = new PopStateEvent("x", { state: leakDetectionNode }); |
| } |
| |
| // Reference cycle of IDBRequest and IDBCursor is tested in |
| // storage/indexeddb/value-cursor-cycle.html and LayoutTests/storage/indexeddb/result-request-cycle.html. |
| |
| // PaymentResponse details reference cycle is tested in |
| // http/tests/paymentrequest/payment-response-reference-cycle-leak.https.html. |
| |
| function createRTCStatsReportCycle() |
| { |
| // FIXME: Need to write this test and reorganize so it can be asynchronous. |
| // Get an RTCStatsReport. |
| // Get one of the objects from the map. |
| // Add a property to that object that references the report. |
| // Add another property to that object that references a leak detection node. |
| } |
| |
| function runLeakTest(testFunctionName, underlyingClassName) |
| { |
| if (underlyingClassName && !(underlyingClassName in window)) |
| debug('---- Did not test ' + underlyingClassName + ' because it is not enabled.'); |
| else |
| shouldBeEqualToString('checkForNodeLeaks(' + testFunctionName + ')', 'did not leak'); |
| } |
| |
| function startTest() |
| { |
| if (!window.internals || !internals.numberOfLiveNodes) { |
| testFailed('Test requires windows.internals, so must be run inside WebKitTestRunner'); |
| return; |
| } |
| |
| runLeakTest('emptyFunction'); |
| runLeakTest('createNode'); |
| runLeakTest('createEventListenerCycle'); |
| runLeakTest('createTreeWalkerNodeCycle'); |
| runLeakTest('createTreeWalkerFilterCycle'); |
| runLeakTest('createRangeCycle'); |
| runLeakTest('createStaticRangeCycle'); |
| runLeakTest('createPromiseCycle'); |
| |
| runLeakTest('createCustomEventDetailsCycle'); |
| runLeakTest('createErrorEventDataCycle'); |
| runLeakTest('createExtendableMessageEventDataCycle', 'ExtendableMessageEvent'); |
| runLeakTest('createMessageEventDataCycle'); |
| runLeakTest('createPaymentMethodChangeEventMethodDetailsCycle', 'PaymentMethodChangeEvent'); |
| runLeakTest('createPopStateEventStateCycle'); |
| runLeakTest('createPromiseRejectionEventPromiseCycle'); |
| runLeakTest('createPromiseRejectionEventPromiseFunctionCycle'); |
| runLeakTest('createPromiseRejectionEventReasonCycle'); |
| } |
| |
| startTest(); |
| |
| </script> |
