The Tor Browser / file revision

 /* Any copyright is dedicated to the Public Domain.

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

 function test() {

   let cw;

   let createGroupItem = function () {

     let bounds = new cw.Rect(20, 20, 150, 150);

     let groupItem = new cw.GroupItem([], {bounds: bounds, immediately: true});

     cw.UI.setActive(groupItem);

     gBrowser.loadOneTab('about:blank', {inBackground: true});

     return groupItem;

   }

   let synthesizeMiddleMouseDrag = function (tabContainer, width) {

     EventUtils.synthesizeMouseAtCenter(tabContainer,

         {type: 'mousedown', button: 1}, cw);

     let rect = tabContainer.getBoundingClientRect();

     EventUtils.synthesizeMouse(tabContainer, rect.width / 2 + width,

         rect.height / 2, {type: 'mousemove', button: 1}, cw);

     EventUtils.synthesizeMouse(tabContainer, rect.width / 2 + width,

         rect.height / 2, {type: 'mouseup', button: 1}, cw);

   }

   let testDragAndDropWithMiddleMouseButton = function () {

     let groupItem = createGroupItem();

     let tabItem = groupItem.getChild(0);

     let tabContainer = tabItem.container;

     let bounds = tabItem.getBounds();

     // try to drag and move the mouse out of the tab

     synthesizeMiddleMouseDrag(tabContainer, 200);

     is(groupItem.getChild(0), tabItem, 'tabItem was not closed');

     ok(bounds.equals(tabItem.getBounds()), 'bounds did not change');

     // try to drag and let the mouse stay within tab bounds

     synthesizeMiddleMouseDrag(tabContainer, 10);

     ok(!groupItem.getChild(0), 'tabItem was closed');

     hideTabView(finish);

   }

   waitForExplicitFinish();

   showTabView(function () {

     cw = TabView.getContentWindow();

     afterAllTabsLoaded(testDragAndDropWithMiddleMouseButton);

   });

 }