gecko/browser/components/sessionstore/test/browser_600545.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/. */

let stateBackup = ss.getBrowserState();

function test() {
  /** Test for Bug 600545 **/
  waitForExplicitFinish();
  testBug600545();
}

function testBug600545() {
  // Set the pref to false to cause non-app tabs to be stripped out on a save
  Services.prefs.setBoolPref("browser.sessionstore.resume_from_crash", false);
  Services.prefs.setIntPref("browser.sessionstore.interval", 2000);

  registerCleanupFunction(function () {
    Services.prefs.clearUserPref("browser.sessionstore.resume_from_crash");
    Services.prefs.clearUserPref("browser.sessionstore.interval");
  });

  // This tests the following use case:
  // When multiple windows are open and browser.sessionstore.resume_from_crash
  // preference is false, tab session data for non-active window is stripped for
  // non-pinned tabs.  This occurs after "sessionstore-state-write" fires which
  // will only fire in this case if there is at least one pinned tab.
  let state = { windows: [
    {
      tabs: [
        { entries: [{ url: "http://example.org#0" }], pinned:true },
        { entries: [{ url: "http://example.com#1" }] },
        { entries: [{ url: "http://example.com#2" }] },
      ],
      selected: 2
    },
    {
      tabs: [
        { entries: [{ url: "http://example.com#3" }] },
        { entries: [{ url: "http://example.com#4" }] },
        { entries: [{ url: "http://example.com#5" }] },
        { entries: [{ url: "http://example.com#6" }] }
      ],
      selected: 3
    }
  ] };

  waitForBrowserState(state, function() {
    // Need to wait for SessionStore's saveState function to be called
    // so that non-pinned tabs will be stripped from non-active window
    waitForSaveState(function () {
      let expectedNumberOfTabs = getStateTabCount(state);
      let retrievedState = JSON.parse(ss.getBrowserState());
      let actualNumberOfTabs = getStateTabCount(retrievedState);

      is(actualNumberOfTabs, expectedNumberOfTabs,
        "Number of tabs in retreived session data, matches number of tabs set.");

      done();
    });
  });
}

function done() {
  // Enumerate windows and close everything but our primary window. We can't
  // use waitForFocus() because apparently it's buggy. See bug 599253.
  let windowsEnum = Services.wm.getEnumerator("navigator:browser");
  while (windowsEnum.hasMoreElements()) {
    let currentWindow = windowsEnum.getNext();
    if (currentWindow != window)
      currentWindow.close();
  }

  ss.setBrowserState(stateBackup);
  executeSoon(finish);
}

// Count up the number of tabs in the state data
function getStateTabCount(aState) {
  let tabCount = 0;
  for (let i in aState.windows)
    tabCount += aState.windows[i].tabs.length;
  return tabCount;
}