зеркало из https://github.com/mozilla/gecko-dev.git
79 строки
2.4 KiB
JavaScript
79 строки
2.4 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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add_task(async function() {
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// Making sure that the e10s is enabled on Windows for testing.
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await setE10sPrefs();
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let docLoaded = waitForEvent(
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Ci.nsIAccessibleEvent.EVENT_DOCUMENT_LOAD_COMPLETE,
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"body"
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);
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const [a11yInitObserver, a11yInit] = initAccService();
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await a11yInitObserver;
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let accService = Cc["@mozilla.org/accessibilityService;1"].getService(
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Ci.nsIAccessibilityService
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);
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ok(accService, "Service initialized");
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await a11yInit;
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await BrowserTestUtils.withNewTab(
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{
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gBrowser,
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url: `data:text/html,
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<html>
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<head>
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<meta charset="utf-8"/>
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<title>Accessibility Test</title>
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</head>
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<body id="body"></body>
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</html>`,
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},
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async function(browser) {
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let docLoadedEvent = await docLoaded;
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let docAcc = docLoadedEvent.accessibleDocument;
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ok(docAcc, "Accessible document proxy is created");
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// Remove unnecessary dangling references
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docLoaded = null;
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docLoadedEvent = null;
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forceGC();
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let canShutdown = false;
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const [a11yShutdownObserver, a11yShutdownPromise] = shutdownAccService();
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await a11yShutdownObserver;
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const a11yShutdown = new Promise((resolve, reject) =>
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a11yShutdownPromise.then(flag =>
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canShutdown
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? resolve()
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: reject("Accessible service was shut down incorrectly")
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)
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);
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accService = null;
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ok(!accService, "Service is removed");
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// Force garbage collection that should not trigger shutdown because there
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// is a reference to an accessible proxy.
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forceGC();
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// Have some breathing room when removing a11y service references.
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await new Promise(resolve => executeSoon(resolve));
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// Now allow a11y service to shutdown.
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canShutdown = true;
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// Remove a last reference to an accessible document proxy.
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docAcc = null;
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ok(!docAcc, "Accessible document proxy is removed");
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// Force garbage collection that should now trigger shutdown.
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forceGC();
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await a11yShutdown;
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}
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);
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// Unsetting e10s related preferences.
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await unsetE10sPrefs();
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});
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