49 lines
1.8 KiB
JavaScript
49 lines
1.8 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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info('Creating a service');
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// Create a11y service.
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let a11yInit = initPromise();
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let accService1 = Cc['@mozilla.org/accessibilityService;1'].getService(
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Ci.nsIAccessibilityService);
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yield a11yInit;
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ok(accService1, 'Service initialized');
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// Add another reference to a11y service. This will not trigger
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// 'a11y-init-or-shutdown' event
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let accService2 = Cc['@mozilla.org/accessibilityService;1'].getService(
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Ci.nsIAccessibilityService);
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ok(accService2, 'Service initialized');
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info('Removing all service references');
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let canShutdown = false;
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// This promise will resolve only if canShutdonw flag is set to true. If
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// 'a11y-init-or-shutdown' event with '0' flag comes before it can be shut
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// down, the promise will reject.
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let a11yShutdown = new Promise((resolve, reject) =>
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shutdownPromise().then(flag => canShutdown ?
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resolve() : reject('Accessible service was shut down incorrectly')));
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// Remove first a11y service reference.
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accService1 = null;
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ok(!accService1, 'Service is removed');
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// Force garbage collection that should not trigger shutdown because there is
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// another reference.
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forceGC();
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// Have some breathing room when removing a11y service references.
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yield 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 last a11y service reference.
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accService2 = null;
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ok(!accService2, 'Service is removed');
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// Force garbage collection that should trigger shutdown.
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forceGC();
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yield a11yShutdown;
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});
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