browser_close_tab_by_dblclick.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/. */

const PREF_CLOSE_TAB_BY_DBLCLICK = "browser.tabs.closeTabByDblclick";

function triggerDblclickOn(target) {

  let promise = BrowserTestUtils.waitForEvent(target, "dblclick");

  EventUtils.synthesizeMouseAtCenter(target, { clickCount: 1 });

  EventUtils.synthesizeMouseAtCenter(target, { clickCount: 2 });

  return promise;

add_task(async function dblclick() {

  let tab = gBrowser.selectedTab;

  await triggerDblclickOn(tab);

  ok(!tab.closing, "Double click the selected tab won't close it");

});

add_task(async function dblclickWithPrefSet() {

  await SpecialPowers.pushPrefEnv({

    set: [[PREF_CLOSE_TAB_BY_DBLCLICK, true]],

});

  let tab = BrowserTestUtils.addTab(gBrowser, "about:mozilla", {

    skipAnimation: true,

});

  isnot(tab, gBrowser.selectedTab, "The new tab is in the background");

  await triggerDblclickOn(tab);

  is(tab, gBrowser.selectedTab, "Double click a background tab will select it");

  await triggerDblclickOn(tab);

  ok(tab.closing, "Double click the selected tab will close it");

});