gecko-dev/browser/components/sessionstore/test/browser_586068-apptabs_ondemand.js

/* 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_RESTORE_ON_DEMAND = "browser.sessionstore.restore_on_demand";
const PREF_RESTORE_PINNED_TABS_ON_DEMAND = "browser.sessionstore.restore_pinned_tabs_on_demand";

add_task(function* test() {
  Services.prefs.setBoolPref(PREF_RESTORE_ON_DEMAND, true);
  Services.prefs.setBoolPref(PREF_RESTORE_PINNED_TABS_ON_DEMAND, true);

  registerCleanupFunction(function () {
    Services.prefs.clearUserPref(PREF_RESTORE_ON_DEMAND);
    Services.prefs.clearUserPref(PREF_RESTORE_PINNED_TABS_ON_DEMAND);
  });

  let state = { windows: [{ tabs: [
    { entries: [{ url: "http://example.org/#1" }], extData: { "uniq": r() }, pinned: true },
    { entries: [{ url: "http://example.org/#2" }], extData: { "uniq": r() }, pinned: true },
    { entries: [{ url: "http://example.org/#3" }], extData: { "uniq": r() }, pinned: true },
    { entries: [{ url: "http://example.org/#4" }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#5" }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#6" }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#7" }], extData: { "uniq": r() } },
  ], selected: 5 }] };

  let promiseRestoringTabs = new Promise(resolve => {
    gProgressListener.setCallback(function (aBrowser, aNeedRestore, aRestoring, aRestored) {
      // get the tab
      let tab;
      for (let i = 0; i < window.gBrowser.tabs.length; i++) {
        if (!tab && window.gBrowser.tabs[i].linkedBrowser == aBrowser)
          tab = window.gBrowser.tabs[i];
      }

      // Check that the load only comes from the selected tab.
      ok(tab.selected, "load came from selected tab");
      is(aNeedRestore, 6, "six tabs left to restore");
      is(aRestoring, 1, "one tab is restoring");
      is(aRestored, 0, "no tabs have been restored, yet");

      gProgressListener.unsetCallback();
      resolve();
    });
  });

  let backupState = ss.getBrowserState();
  ss.setBrowserState(JSON.stringify(state));
  yield promiseRestoringTabs;

  // Cleanup.
  yield promiseBrowserState(backupState);
});