browser_restore_private_tab_os.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/. */

"use strict";

const TEST_URI =

  "https://example.com/" +

  "browser/browser/components/sessionstore/test/empty.html";

add_setup(async function () {

  await SpecialPowers.pushPrefEnv({

    set: [

      // Set the pref to true so we know exactly how many tabs should be restoring at

      // any given time. This guarantees that a finishing load won't start another.

      ["browser.sessionstore.restore_on_demand", true],

      // Don't restore tabs lazily.

      ["browser.sessionstore.restore_tabs_lazily", true],

      // don't preload tabs so we don't have extra XULFrameLoaderCreated events

      // firing

      ["browser.newtab.preload", false],

],

});

});

add_task(async function testRestore() {

  // Clear the list of closed windows.

  forgetClosedWindows();

  // Create a new private window

  let win = await promiseNewWindowLoaded({ private: true });

  // Create a new private tab

  let tab = BrowserTestUtils.addTab(win.gBrowser, TEST_URI);

  let browser = tab.linkedBrowser;

  await promiseBrowserLoaded(browser);

  await TabStateFlusher.flush(browser);

  // Ensure that closed tabs in a private windows can be restored.

  win.gBrowser.removeTab(tab);

  is(ss.getClosedTabCountForWindow(win), 1, "there is a single tab to restore");

  tab = SessionStore.undoCloseTab(win, 0);

  info(`Undo close tab`);

  browser = tab.linkedBrowser;

  await promiseTabRestored(tab);

  info(`Private tab restored`);

  let expectedRemoteType = gFissionBrowser

    ? "webIsolated=https://example.com^privateBrowsingId=1"

    : "web";

  is(browser.remoteType, expectedRemoteType, "correct remote type");

  await BrowserTestUtils.closeWindow(win);

  // Cleanup

  info("Forgetting closed tabs");

  forgetClosedTabs(window);

});