browser_removeTabsToTheStart.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/. */

add_task(async function removeTabsToTheStart() {

  // don't mess with the original tab

  let originalTab = gBrowser.selectedTab;

  gBrowser.pinTab(originalTab);

  // Add three new tabs after the original tab. Pin the second one.

  let firstTab = await addTab();

  let pinnedTab = await addTab();

  let lastTab = await addTab();

  gBrowser.pinTab(pinnedTab);

  // Check that there is only one closable tab from lastTab to the start

is(

    gBrowser.getTabsToTheStartFrom(lastTab).length,

1,

    "One unpinned tab towards the start"

);

  // Remove tabs to the start

  gBrowser.removeTabsToTheStartFrom(lastTab);

  ok(firstTab.closing, "First tab is closing");

  ok(!pinnedTab.closing, "Pinned tab is not closing");

  ok(!lastTab.closing, "Last tab is not closing");

  // cleanup

  gBrowser.unpinTab(originalTab);

  for (let tab of [pinnedTab, lastTab]) {

    BrowserTestUtils.removeTab(tab);

});