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 win;

   let testFocusTitle = function () {

     let title = 'title';

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

     groupItem.setTitle(title);

     let target = groupItem.$titleShield[0];

     EventUtils.synthesizeMouseAtCenter(target, {}, cw);

     let input = groupItem.$title[0];

     is(input.selectionStart, 0, 'the whole text is selected');

     is(input.selectionEnd, title.length, 'the whole text is selected');

     EventUtils.synthesizeMouseAtCenter(input, {}, cw);

     is(input.selectionStart, title.length, 'caret is at the rightmost position and no text is selected');

     is(input.selectionEnd, title.length, 'caret is at the rightmost position and no text is selected');

     win.close();

     finish();

   }

   waitForExplicitFinish();

   newWindowWithTabView(function (tvwin) {

     win = tvwin;

     registerCleanupFunction(function () {

       if (!win.closed)

         win.close();

     });

     cw = win.TabView.getContentWindow();

     SimpleTest.waitForFocus(testFocusTitle, cw);

   });

 }