gecko/browser/base/content/test/tabview/browser_tabview_bug597360.js

/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

function test() {
  waitForExplicitFinish();

  window.addEventListener("tabviewshown", onTabViewWindowLoaded, false);
  TabView.show();
}

function onTabViewWindowLoaded() {
  window.removeEventListener("tabviewshown", onTabViewWindowLoaded, false);

  let contentWindow = document.getElementById("tab-view").contentWindow;
  is(contentWindow.GroupItems.groupItems.length, 1, 
     "There is one group item on startup");

  let groupItem = contentWindow.GroupItems.groupItems[0];
  groupItem.addSubscriber(groupItem, "groupHidden", function() {
    groupItem.removeSubscriber(groupItem, "groupHidden");

    let onTabViewHidden = function() {
      window.removeEventListener("tabviewhidden", onTabViewHidden, false);

      is(contentWindow.GroupItems.groupItems.length, 1, 
         "There is still one group item");
      isnot(groupItem.id, contentWindow.GroupItems.groupItems[0].id, 
            "The initial group item is not the same as the final group item");
      is(gBrowser.tabs.length, 1, "There is only one tab");
      ok(!TabView.isVisible(), "Tab View is hidden");

      finish();
    };
    window.addEventListener("tabviewhidden", onTabViewHidden, false);

    // create a new tab
    EventUtils.synthesizeKey("t", { accelKey: true });
  });
  groupItem.closeAll();
}