browser_bug1682866.js

Enable keyboard shortcuts

const baseURL = getRootDirectory(gTestPath).replace(

  "chrome://mochitests/content",

  "http://example.com"

);

const alertURL = `${baseURL}file_bug1682866.html`;

add_task(async function testAlertForceClosed() {

  let tab = await BrowserTestUtils.openNewForegroundTab(

    gBrowser,

    alertURL,

    true /* waitForLoad */

);

  // Open a second which is in the same process as tab

  let secondTabIsLoaded = BrowserTestUtils.waitForNewTab(

    gBrowser,

    alertURL,

    true,

    false

);

  let isSuspendedAfterAlert = await SpecialPowers.spawn(

    tab.linkedBrowser.browsingContext,

    [alertURL],

    url => {

      content.open(url);

      var utils = SpecialPowers.getDOMWindowUtils(content);

      return utils.isInputTaskManagerSuspended;

);

  await secondTabIsLoaded;

  let secondTab = gBrowser.tabs[2];

is(

    isSuspendedAfterAlert,

    Services.prefs.getBoolPref("dom.input_events.canSuspendInBCG.enabled"),

    "InputTaskManager should be suspended because alert is opened"

);

  let alertClosed = BrowserTestUtils.waitForEvent(

    tab.linkedBrowser,

    "DOMModalDialogClosed"

);

  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, "about:newtab");

  await BrowserTestUtils.browserLoaded(tab.linkedBrowser);

  await alertClosed;

  gBrowser.removeTab(tab);

  gBrowser.removeTab(secondTab);

});