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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /accessible/tests/browser/browser_shutdown_parent_own_reference.js
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+'use strict';
+
+add_task(function* () {
+ // Making sure that the e10s is enabled on Windows for testing.
+ yield setE10sPrefs();
+
+ yield BrowserTestUtils.withNewTab({
+ gBrowser,
+ url: `data:text/html,
+ <html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>Accessibility Test</title>
+ </head>
+ <body></body>
+ </html>`
+ }, function*(browser) {
+ info('Creating a service in parent and waiting for service to be created ' +
+ 'in content');
+ // Create a11y service in the main process. This will trigger creating of
+ // the a11y service in parent as well.
+ let parentA11yInit = initPromise();
+ let contentA11yInit = initPromise(browser);
+ let accService = Cc['@mozilla.org/accessibilityService;1'].getService(
+ Ci.nsIAccessibilityService);
+ ok(accService, 'Service initialized in parent');
+ yield Promise.all([parentA11yInit, contentA11yInit]);
+
+ info('Adding additional reference to accessibility service in content ' +
+ 'process');
+ // Add a new reference to the a11y service inside the content process.
+ loadFrameScripts(browser, `let accService = Components.classes[
+ '@mozilla.org/accessibilityService;1'].getService(
+ Components.interfaces.nsIAccessibilityService);`);
+
+ info('Trying to shut down a service in content and making sure it stays ' +
+ 'alive as it was started by parent');
+ let contentCanShutdown = false;
+ // This promise will resolve only if contentCanShutdown flag is set to true.
+ // If 'a11y-init-or-shutdown' event with '0' flag (in content) comes before
+ // it can be shut down, the promise will reject.
+ let contentA11yShutdown = new Promise((resolve, reject) =>
+ shutdownPromise(browser).then(flag => contentCanShutdown ?
+ resolve() : reject('Accessible service was shut down incorrectly')));
+ // Remove a11y service reference in content and force garbage collection.
+ // This should not trigger shutdown since a11y was originally initialized by
+ // the main process.
+ loadFrameScripts(browser, `accService = null; Components.utils.forceGC();`);
+
+ // Have some breathing room between a11y service shutdowns.
+ yield new Promise(resolve => executeSoon(resolve));
+
+ info('Removing a service in parent');
+ // Now allow a11y service to shutdown in content.
+ contentCanShutdown = true;
+ // Remove the a11y service reference in the main process.
+ let parentA11yShutdown = shutdownPromise();
+ accService = null;
+ ok(!accService, 'Service is removed in parent');
+ // Force garbage collection that should trigger shutdown in both parent and
+ // content.
+ forceGC();
+ yield Promise.all([parentA11yShutdown, contentA11yShutdown]);
+
+ // Unsetting e10s related preferences.
+ yield unsetE10sPrefs();
+ });
+});