browser_bug1124271_readerModePinnedTab.js

Enable keyboard shortcuts

/* 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/. */

// Test that the reader mode button won't open in a new tab when clicked from a pinned tab

const PREF = "reader.parse-on-load.enabled";

const TEST_PATH = getRootDirectory(gTestPath).replace(

  "chrome://mochitests/content",

  "https://example.com"

);

var readerButton = document.getElementById("reader-mode-button");

add_task(async function () {

  registerCleanupFunction(function () {

    Services.prefs.clearUserPref(PREF);

    while (gBrowser.tabs.length > 1) {

      gBrowser.removeCurrentTab();

});

  // Enable the reader mode button.

  Services.prefs.setBoolPref(PREF, true);

  let tab = (gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser));

  gBrowser.pinTab(tab);

  let initialTabsCount = gBrowser.tabs.length;

  // Point tab to a test page that is reader-able.

  let url = TEST_PATH + "readerModeArticle.html";

  await promiseTabLoadEvent(tab, url);

  await TestUtils.waitForCondition(() => !readerButton.hidden);

  readerButton.click();

  await promiseTabLoadEvent(tab);

  // Ensure no new tabs are opened when exiting reader mode in a pinned tab

  is(gBrowser.tabs.length, initialTabsCount, "No additional tabs were opened.");

  let pageShownPromise = BrowserTestUtils.waitForContentEvent(

    tab.linkedBrowser,

    "pageshow"

);

  readerButton.click();

  await pageShownPromise;

  // Ensure no new tabs are opened when exiting reader mode in a pinned tab

  is(gBrowser.tabs.length, initialTabsCount, "No additional tabs were opened.");

  gBrowser.removeCurrentTab();

});