fune/browser/components/sessionstore/test/browser_490040.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/. */

// Only windows with open tabs are restorable. Windows where a lone tab is
// detached may have _closedTabs, but is left with just an empty tab.
const STATES = [
  {
    shouldBeAdded: true,
    windowState: {
      windows: [
        {
          tabs: [
            {
              entries: [
                {
                  url: "http://example.com",
                  triggeringPrincipal_base64,
                  title: "example.com",
                },
              ],
            },
          ],
          selected: 1,
          _closedTabs: [],
        },
      ],
    },
  },
  {
    shouldBeAdded: false,
    windowState: {
      windows: [
        {
          tabs: [{ entries: [] }],
          _closedTabs: [],
        },
      ],
    },
  },
  {
    shouldBeAdded: false,
    windowState: {
      windows: [
        {
          tabs: [{ entries: [] }],
          _closedTabs: [
            {
              state: {
                entries: [
                  {
                    url: "http://example.com",
                    triggeringPrincipal_base64,
                    index: 1,
                  },
                ],
              },
            },
          ],
        },
      ],
    },
  },
  {
    shouldBeAdded: false,
    windowState: {
      windows: [
        {
          tabs: [{ entries: [] }],
          _closedTabs: [],
          extData: { keyname: "pi != " + Math.random() },
        },
      ],
    },
  },
];

add_task(async function test_bug_490040() {
  for (let state of STATES) {
    // Ensure we can store the window if needed.
    let startingClosedWindowCount = ss.getClosedWindowCount();
    await pushPrefs([
      "browser.sessionstore.max_windows_undo",
      startingClosedWindowCount + 1,
    ]);

    let curClosedWindowCount = ss.getClosedWindowCount();
    let win = await BrowserTestUtils.openNewBrowserWindow();

    await setWindowState(win, state.windowState, true);
    if (state.windowState.windows[0].tabs.length) {
      await BrowserTestUtils.browserLoaded(win.gBrowser.selectedBrowser);
    }

    await BrowserTestUtils.closeWindow(win);

    is(
      ss.getClosedWindowCount(),
      curClosedWindowCount + (state.shouldBeAdded ? 1 : 0),
      "That window should " +
        (state.shouldBeAdded ? "" : "not ") +
        "be restorable"
    );
  }
});