browser_aboutaddons_blanktab.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 testBlankTabReusedAboutAddons() {

  await BrowserTestUtils.withNewTab({ gBrowser }, async browser => {

    let tabCount = gBrowser.tabs.length;

    is(browser, gBrowser.selectedBrowser, "New tab is selected");

    // Opening about:addons shouldn't change the selected tab.

    BrowserAddonUI.openAddonsMgr();

    is(browser, gBrowser.selectedBrowser, "No new tab was opened");

    // Wait for about:addons to load.

    await BrowserTestUtils.browserLoaded(browser);

is(

      browser.currentURI.spec,

      "about:addons",

      "about:addons should load into blank tab."

);

    is(gBrowser.tabs.length, tabCount, "Still the same number of tabs");

});

});