The Tor Browser / file revision

 /* Any copyright is dedicated to the Public Domain.

    http://creativecommons.org/publicdomain/zero/1.0/ */

 function test() {

   waitForExplicitFinish();

   let onLoad = function (win) {

     for (let i = 0; i < 2; i++)

       win.gBrowser.addTab();

   };

   let onShow = function (win) {

     registerCleanupFunction(function () win.close());

     let cw = win.TabView.getContentWindow();

     let groupItem = cw.GroupItems.groupItems[0];

     groupItem.setSize(400, 200, true);

     let tabItem = groupItem.getChild(0);

     let bounds = tabItem.getBounds();

     is(groupItem.getActiveTab(), tabItem, "the first tab is active");

     EventUtils.synthesizeMouseAtCenter(tabItem.container, {button: 1}, cw);

     is(groupItem.getChildren().indexOf(tabItem), -1, "tabItem got removed");

     ok(bounds.equals(groupItem.getChild(0).getBounds()), "tabItem bounds didn't change");

     finish();

   };

   newWindowWithTabView(onShow, onLoad);

 }