зеркало из https://github.com/mozilla/gecko-dev.git
76 строки
3.1 KiB
JavaScript
76 строки
3.1 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(function* () {
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// Making sure that the e10s is enabled on Windows for testing.
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yield setE10sPrefs();
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yield 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></body>
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</html>`
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}, function*(browser) {
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info('Creating a service in parent and waiting for service to be created ' +
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'in content');
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// Create a11y service in the main process. This will trigger creating of
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// the a11y service in parent as well.
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let parentA11yInit = initPromise();
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let contentA11yInit = initPromise(browser);
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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 in parent');
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yield Promise.all([parentA11yInit, contentA11yInit]);
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info('Adding additional reference to accessibility service in content ' +
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'process');
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// Add a new reference to the a11y service inside the content process.
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loadFrameScripts(browser, `let accService = Components.classes[
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'@mozilla.org/accessibilityService;1'].getService(
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Components.interfaces.nsIAccessibilityService);`);
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info('Shutting down a service in parent and making sure the one in ' +
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'content stays alive');
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let contentCanShutdown = false;
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let parentA11yShutdown = shutdownPromise();
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// This promise will resolve only if contentCanShutdown flag is set to true.
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// If 'a11y-init-or-shutdown' event with '0' flag (in content) comes before
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// it can be shut down, the promise will reject.
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let contentA11yShutdown = new Promise((resolve, reject) =>
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shutdownPromise(browser).then(flag => contentCanShutdown ?
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resolve() : reject('Accessible service was shut down incorrectly')));
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// Remove a11y service reference in the main process and force garbage
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// collection. This should not trigger shutdown in content since a11y
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// service is used by XPCOM.
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accService = null;
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ok(!accService, 'Service is removed in parent');
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// Force garbage collection that should not trigger shutdown because there
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// is a reference in a content process.
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forceGC();
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loadFrameScripts(browser, `Components.utils.forceGC();`);
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yield parentA11yShutdown;
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// Have some breathing room between a11y service shutdowns.
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yield new Promise(resolve => executeSoon(resolve));
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info('Removing a service in content');
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// Now allow a11y service to shutdown in content.
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contentCanShutdown = true;
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// Remove last reference to a11y service in content and force garbage
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// collection that should trigger shutdown.
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loadFrameScripts(browser, `accService = null; Components.utils.forceGC();`);
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yield contentA11yShutdown;
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// Unsetting e10s related preferences.
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yield unsetE10sPrefs();
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});
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});
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