/* 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();
let a11yInit = initPromise();
let accService = Cc["@mozilla.org/accessibilityService;1"].getService(
Ci.nsIAccessibilityService);
ok(accService, "Service initialized");
await a11yInit;
await BrowserTestUtils.withNewTab({
gBrowser,
url: `data:text/html,
Accessibility Test
`
}, async function(browser) {
let onShow = waitForEvent(Ci.nsIAccessibleEvent.EVENT_SHOW, "div");
await invokeSetStyle(browser, "div", "visibility", "visible");
let showEvent = await onShow;
let divAcc = showEvent.accessible;
ok(divAcc, "Accessible proxy is created");
// Remove unnecessary dangling references
onShow = null;
showEvent = null;
forceGC();
let canShutdown = false;
let a11yShutdown = new Promise((resolve, reject) =>
shutdownPromise().then(flag => canShutdown ? resolve() :
reject("Accessible service was shut down incorrectly")));
accService = null;
ok(!accService, "Service is removed");
// Force garbage collection that should not trigger shutdown because there
// is a reference to an accessible proxy.
forceGC();
// Have some breathing room when removing a11y service references.
await new Promise(resolve => executeSoon(resolve));
// Now allow a11y service to shutdown.
canShutdown = true;
// Remove a last reference to an accessible proxy.
divAcc = null;
ok(!divAcc, "Accessible proxy is removed");
// Force garbage collection that should now trigger shutdown.
forceGC();
await a11yShutdown;
});
// Unsetting e10s related preferences.
await unsetE10sPrefs();
});