third_party/WebKit/LayoutTests/editing/undo/5658727.html

   1 <p>This tests for a bug where changing focus away from a textarea that has been emptied out by the Undo operation would clear the Undo stack. You should see a textarea with "foo" inside it below.</p>
   2 <textarea id="textarea"></textarea>
   3
   4 <script>
   5 if (window.testRunner)
   6     window.testRunner.dumpAsText();
   7
   8 textarea = document.getElementById("textarea");
   9 textarea.focus();
  10 document.execCommand("InsertText", false, "foo");
  11 document.execCommand("Undo");
  12 textarea.blur();
  13 document.execCommand("Redo");
  14 if (textarea.value == "foo")
  15     document.write("Success: Redo worked after the textarea lost focus.");
  16 else
  17     document.write("Failure: Redo didn't work after the textarea lost focus.");
  18 </script>