/* 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(async function() {
// Making sure that the e10s is enabled on Windows for testing.
await setE10sPrefs();
await BrowserTestUtils.withNewTab({
gBrowser,
url: `data:text/html,
Accessibility Test
`
}, async 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 contentConsumersChanged =
ContentTask.spawn(browser, {}, a11yConsumersChangedPromise);
let accService = Cc["@mozilla.org/accessibilityService;1"].getService(
Ci.nsIAccessibilityService);
ok(accService, "Service initialized in parent");
await Promise.all([parentA11yInit, contentA11yInit]);
await contentConsumersChanged.then(data => Assert.deepEqual(data, {
XPCOM: false, MainProcess: true, PlatformAPI: false
}, "Accessibility service consumers in content are correct."));
info("Adding additional reference to accessibility service in content " +
"process");
contentConsumersChanged =
ContentTask.spawn(browser, {}, a11yConsumersChangedPromise);
// Add a new reference to the a11y service inside the content process.
loadFrameScripts(browser, `var accService = Components.classes[
'@mozilla.org/accessibilityService;1'].getService(
Components.interfaces.nsIAccessibilityService);`);
await contentConsumersChanged.then(data => Assert.deepEqual(data, {
XPCOM: true, MainProcess: true, PlatformAPI: false
}, "Accessibility service consumers in content are correct."));
const contentConsumers = await ContentTask.spawn(browser, {}, () =>
accService.getConsumers());
Assert.deepEqual(JSON.parse(contentConsumers), {
XPCOM: true, MainProcess: true, PlatformAPI: false
}, "Accessibility service consumers in parent are correct.");
info("Shutting down a service in parent and making sure the one in " +
"content stays alive");
let contentCanShutdown = false;
let parentA11yShutdown = shutdownPromise();
contentConsumersChanged =
ContentTask.spawn(browser, {}, a11yConsumersChangedPromise);
// 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 the main process and force garbage
// collection. This should not trigger shutdown in content since a11y
// service is used by XPCOM.
accService = null;
ok(!accService, "Service is removed in parent");
// Force garbage collection that should not trigger shutdown because there
// is a reference in a content process.
forceGC();
loadFrameScripts(browser, `Components.utils.forceGC();`);
await parentA11yShutdown;
await contentConsumersChanged.then(data => Assert.deepEqual(data, {
XPCOM: true, MainProcess: false, PlatformAPI: false
}, "Accessibility service consumers in content are correct."));
// Have some breathing room between a11y service shutdowns.
await new Promise(resolve => executeSoon(resolve));
info("Removing a service in content");
// Now allow a11y service to shutdown in content.
contentCanShutdown = true;
contentConsumersChanged =
ContentTask.spawn(browser, {}, a11yConsumersChangedPromise);
// Remove last reference to a11y service in content and force garbage
// collection that should trigger shutdown.
loadFrameScripts(browser, `accService = null; Components.utils.forceGC();`);
await contentA11yShutdown;
await contentConsumersChanged.then(data => Assert.deepEqual(data, {
XPCOM: false, MainProcess: false, PlatformAPI: false
}, "Accessibility service consumers in content are correct."));
// Unsetting e10s related preferences.
await unsetE10sPrefs();
});
});