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1ce5193a91
MozReview-Commit-ID: BeIn3ThKQAx --HG-- extra : rebase_source : 02a3d9583a55a186bc6bb5c0308c6a88d72daf13
65 lines
2.1 KiB
JavaScript
65 lines
2.1 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 a11yInit = initPromise();
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let accService = Cc["@mozilla.org/accessibilityService;1"].getService(
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Ci.nsIAccessibilityService);
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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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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><div id="div" style="visibility: hidden;"></div></body>
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</html>`
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}, async function(browser) {
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let onShow = waitForEvent(Ci.nsIAccessibleEvent.EVENT_SHOW, "div");
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await invokeSetStyle(browser, "div", "visibility", "visible");
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let showEvent = await onShow;
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let divAcc = showEvent.accessible;
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ok(divAcc, "Accessible proxy is created");
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// Remove unnecessary dangling references
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onShow = null;
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showEvent = null;
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forceGC();
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let canShutdown = false;
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let a11yShutdown = new Promise((resolve, reject) =>
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shutdownPromise().then(flag => canShutdown ? resolve() :
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reject("Accessible service was shut down incorrectly")));
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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 proxy.
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divAcc = null;
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ok(!divAcc, "Accessible 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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// Unsetting e10s related preferences.
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await unsetE10sPrefs();
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});
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