browser_shutdown_start_restart.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(async function () {

  info("Creating a service");

  // Create a11y service.

  let [a11yInitObserver, a11yInit] = initAccService();

  await a11yInitObserver;

  let accService = Cc["@mozilla.org/accessibilityService;1"].getService(

    Ci.nsIAccessibilityService

);

  await a11yInit;

  ok(accService, "Service initialized");

  info("Removing a service");

  // Remove the only reference to an a11y service.

  let [a11yShutdownObserver, a11yShutdown] = shutdownAccService();

  await a11yShutdownObserver;

  accService = null;

  ok(!accService, "Service is removed");

  // Force garbage collection that should trigger shutdown.

  forceGC();

  await a11yShutdown;

  info("Recreating a service");

  // Re-create a11y service.

  [a11yInitObserver, a11yInit] = initAccService();

  await a11yInitObserver;

  accService = Cc["@mozilla.org/accessibilityService;1"].getService(

    Ci.nsIAccessibilityService

);

  await a11yInit;

  ok(accService, "Service initialized again");

  info("Removing a service again");

  // Remove the only reference to an a11y service again.

  [a11yShutdownObserver, a11yShutdown] = shutdownAccService();

  await a11yShutdownObserver;

  accService = null;

  ok(!accService, "Service is removed again");

  // Force garbage collection that should trigger shutdown.

  forceGC();

  await a11yShutdown;

});