зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1596756 - Add browser tests for FinalizationGroup r=mccr8
These are mochitests because there's currently no way to trigger a GC from WPT. I tried to do this with xpcshell tests but I couldn't get the pref to enable weak refs to work. Differential Revision: https://phabricator.services.mozilla.com/D59375 --HG-- extra : moz-landing-system : lando
This commit is contained in:
Jon Coppeard
Родитель
18a075eec7
Коммит
0f4b542755
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@ -0,0 +1,96 @@
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let holdings1 = [];
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let holdings2 = [];
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let holdings3 = [];
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let holdings4 = [];
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let holdings5 = [];
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onmessage = (event) => {
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switch (event.data) {
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case 'startTest':
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startTest();
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break;
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case 'checkResults':
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checkResults();
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break;
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default:
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throw "Unknown message";
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}
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};
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function startTest() {
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// Group with no registered objects.
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let group1 = new FinalizationGroup(i => holdings1 = [...i]);
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// Group with three registered objects.
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let group2 = new FinalizationGroup(i => holdings2 = [...i]);
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group2.register({}, 1);
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group2.register({}, 2);
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group2.register({}, 3);
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// Group with registered object that is then unregistered.
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let group3 = new FinalizationGroup(i => holdings3 = [...i]);
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let token3 = {}
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group3.register({}, 1, token3);
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group3.unregister(token3);
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// Group with registered object that doesn't die.
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let group4 = new FinalizationGroup(i => holdings4 = [...i]);
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let object4 = {};
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group4.register(object4, 1);
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// Group observing cyclic JS data structure.
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let group5 = new FinalizationGroup(i => holdings5 = [...i]);
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group5.register(makeJSCycle(4), 5);
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const { gc } = getJSTestingFunctions();
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gc();
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Promise.resolve().then(() => {
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checkNoCallbacks();
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});
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postMessage('started');
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}
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function checkNoCallbacks() {
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is(holdings1.length, 0);
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is(holdings2.length, 0);
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is(holdings3.length, 0);
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is(holdings4.length, 0);
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is(holdings5.length, 0);
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}
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function checkResults() {
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is(holdings1.length, 0);
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let result = holdings2.sort((a, b) => a - b);
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is(result.length, 3);
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is(result[0], 1);
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is(result[1], 2);
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is(result[2], 3);
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is(holdings3.length, 0);
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is(holdings4.length, 0);
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is(holdings5.length, 1);
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is(holdings5[0], 5);
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postMessage('passed');
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}
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function is(a, b) {
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if (a !== b) {
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throw `Expected ${b} but got ${a}`;
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}
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}
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function makeJSCycle(size) {
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let first = {};
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let current = first;
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for (let i = 0; i < size; i++) {
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current.next = {};
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current = current.next;
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}
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current.next = first;
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return first;
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}
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@ -36,6 +36,9 @@ support-files =
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inner.html
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test1_bug629331.html
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test2_bug629331.html
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finalizationGroup_worker.js
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prefs =
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javascript.options.experimental.weakrefs=true
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[test_bug384632.html]
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[test_bug390488.html]
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@ -110,3 +113,7 @@ skip-if = (debug == false)
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support-files =
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../../../../dom/tests/mochitest/fetch/test_fetch_basic.js
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[test_weakmaps.html]
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[test_finalizationGroup.html]
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skip-if = !nightly_build
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[test_finalizationGroupInWorker.html]
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skip-if = !nightly_build
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@ -0,0 +1,112 @@
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<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Test FinalizationGroup works in the browser</title>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<script type="application/javascript">
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function go() {
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SimpleTest.waitForExplicitFinish();
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// Group with no registered objects.
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let holdings1 = [];
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let group1 = new FinalizationGroup(i => holdings1 = [...i]);
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// Group with three registered objects.
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let holdings2 = [];
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let group2 = new FinalizationGroup(i => holdings2 = [...i]);
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group2.register({}, 1);
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group2.register({}, 2);
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group2.register({}, 3);
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// Group with registered object that is then unregistered.
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let holdings3 = [];
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let group3 = new FinalizationGroup(i => holdings3 = [...i]);
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let token3 = {}
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group3.register({}, 1, token3);
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group3.unregister(token3);
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// Group with registered object that doesn't die.
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let holdings4 = [];
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let group4 = new FinalizationGroup(i => holdings4 = [...i]);
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let object4 = {};
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group4.register(object4, 1);
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// Group observing cyclic JS data structure.
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let holdings5 = [];
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let group5 = new FinalizationGroup(i => holdings5 = [...i]);
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group5.register(makeJSCycle(4), 5);
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// Group observing cyclic DOM/JS data structure.
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let holdings6 = [];
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let group6 = new FinalizationGroup(i => holdings6 = [...i]);
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group6.register(makeDOMCycle(4), 6);
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// Need to run full GC/CC/GC cycle to collect cyclic garbage through DOM
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// and JS heaps.
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SpecialPowers.DOMWindowUtils.garbageCollect();
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SpecialPowers.DOMWindowUtils.cycleCollect();
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SpecialPowers.DOMWindowUtils.garbageCollect();
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// Microtasks are run before cleanup callbacks.
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Promise.resolve().then(() => {
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is(holdings1.length, 0);
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is(holdings2.length, 0);
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is(holdings3.length, 0);
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is(holdings4.length, 0);
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is(holdings5.length, 0);
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is(holdings6.length, 0);
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});
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// setTimeout queues a task which will run after cleanup callbacks.
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setTimeout(() => {
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is(holdings1.length, 0);
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let result = holdings2.sort((a, b) => a - b);
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is(result.length, 3);
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is(result[0], 1);
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is(result[1], 2);
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is(result[2], 3);
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is(holdings3.length, 0);
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is(holdings4.length, 0);
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is(holdings5.length, 1);
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is(holdings5[0], 5);
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is(holdings6.length, 1);
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is(holdings6[0], 6);
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SimpleTest.finish();
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}, 0);
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}
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function makeJSCycle(size) {
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let first = {};
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let current = first;
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for (let i = 0; i < size; i++) {
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current.next = {};
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current = current.next;
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}
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current.next = first;
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return first;
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}
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function makeDOMCycle(size) {
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let first = {};
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let current = first;
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for (let i = 0; i < size; i++) {
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if (i % 2 === 0) {
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current.next = document.createElement("div");
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} else {
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current.next = {};
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}
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current = current.next;
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}
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current.next = first;
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return first;
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}
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</script>
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</head>
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<body onload="go()"></body>
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</html>
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@ -0,0 +1,40 @@
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<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Test FinalizationGroup works in workers</title>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<script type="application/javascript">
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function go() {
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SimpleTest.waitForExplicitFinish();
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let worker = new Worker('finalizationGroup_worker.js');
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worker.onevent = (event) => {
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console.log(event.message);
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throw event.error;
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};
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worker.onmessage = (event) => {
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switch (event.data) {
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case 'started':
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worker.postMessage('checkResults');
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break;
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case 'passed':
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ok(true, "Tests passed");
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SimpleTest.finish();
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break;
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default:
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console.log(event.data);
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break;
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}
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};
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worker.postMessage('startTest');
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}
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</script>
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</head>
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<body onload="go()"></body>
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</html>
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