browser_hide_removing.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/. */

// Bug 587922: tabs don't get removed if they're hidden

add_task(async function () {

  // Add a tab that will get removed and hidden

  let testTab = BrowserTestUtils.addTab(gBrowser, "about:blank", {

    skipAnimation: true,

});

  is(gBrowser.visibleTabs.length, 2, "just added a tab, so 2 tabs");

  await BrowserTestUtils.switchTab(gBrowser, testTab);

  let numVisBeforeHide, numVisAfterHide;

  // We have to animate the tab removal in order to get an async

  // tab close.

  BrowserTestUtils.removeTab(testTab, { animate: true });

  numVisBeforeHide = gBrowser.visibleTabs.length;

  gBrowser.hideTab(testTab);

  numVisAfterHide = gBrowser.visibleTabs.length;

  is(numVisBeforeHide, 1, "animated remove has in 1 tab left");

  is(numVisAfterHide, 1, "hiding a removing tab also has 1 tab");

});