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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_multi_reference.js
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'accessible/tests/browser/browser_shutdown_multi_reference.js')
-rw-r--r--accessible/tests/browser/browser_shutdown_multi_reference.js48
1 files changed, 48 insertions, 0 deletions
diff --git a/accessible/tests/browser/browser_shutdown_multi_reference.js b/accessible/tests/browser/browser_shutdown_multi_reference.js
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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* () {
+ info('Creating a service');
+ // Create a11y service.
+ let a11yInit = initPromise();
+ let accService1 = Cc['@mozilla.org/accessibilityService;1'].getService(
+ Ci.nsIAccessibilityService);
+ yield a11yInit;
+ ok(accService1, 'Service initialized');
+
+ // Add another reference to a11y service. This will not trigger
+ // 'a11y-init-or-shutdown' event
+ let accService2 = Cc['@mozilla.org/accessibilityService;1'].getService(
+ Ci.nsIAccessibilityService);
+ ok(accService2, 'Service initialized');
+
+ info('Removing all service references');
+ let canShutdown = false;
+ // This promise will resolve only if canShutdonw flag is set to true. If
+ // 'a11y-init-or-shutdown' event with '0' flag comes before it can be shut
+ // down, the promise will reject.
+ let a11yShutdown = new Promise((resolve, reject) =>
+ shutdownPromise().then(flag => canShutdown ?
+ resolve() : reject('Accessible service was shut down incorrectly')));
+ // Remove first a11y service reference.
+ accService1 = null;
+ ok(!accService1, 'Service is removed');
+ // Force garbage collection that should not trigger shutdown because there is
+ // another reference.
+ forceGC();
+
+ // Have some breathing room when removing a11y service references.
+ yield new Promise(resolve => executeSoon(resolve));
+
+ // Now allow a11y service to shutdown.
+ canShutdown = true;
+ // Remove last a11y service reference.
+ accService2 = null;
+ ok(!accService2, 'Service is removed');
+ // Force garbage collection that should trigger shutdown.
+ forceGC();
+ yield a11yShutdown;
+});