diff -r 000000000000 -r 6474c204b198 browser/components/tabview/test/browser_tabview_bug618816.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/tabview/test/browser_tabview_bug618816.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,41 @@
+/* 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);
+  });
+}