test_bug471722.html

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<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=471722

-->

<head>

  <title>Test for Bug 471722</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

  <script src="/tests/SimpleTest/EventUtils.js"></script>

</head>

<body onload="doTest();">

  <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=471722">Mozilla Bug 471722</a>

  <p id="display"></p>

  <div id="content" style="display: none">

  </div>

  <pre id="test">

    <script type="application/javascript">

      /** Test for Bug 471722 **/

      SimpleTest.waitForExplicitFinish();

      function doTest() {

        var t1 = $("t1");

        var editor = SpecialPowers.wrap(t1).editor;

        ok(editor, "able to get editor for the element");

        t1.focus();

        t1.select();

        try {

          // Cut the initial text in the textbox

          ok(editor.canCut(), "can cut text");

          editor.cut();

          is(t1.value, "", "initial text was removed");

          // So now we will have emptied the textfield and the editor will have

          // created a padding <br> element for empty editor.

          // Check the transaction is in the undo stack...

          ok(editor.canUndo, "undo should be available");

          // Undo the cut

          editor.undo();

          is(t1.value, "minefield", "text reinserted");

          // So now, the cut should be in the redo stack, so executing the redo

          // will clear the text once again and reinsert the padding <br>

          // element for empty editor that was removed after undo.

          // This will require the editor to figure out that we have a padding

          // <br> element again...

          ok(editor.canRedo, "redo should be available");

          editor.redo();

          // Did the editor notice a padding <br> element for empty editor

          // reappeared?

          is(t1.value, "", "editor found padding <br> element");

       } catch (e) {

         ok(false, "test failed with error " + e);

       SimpleTest.finish();

   </script>

  </pre>

  <input type="text" value="minefield" id="t1" />

</body>

</html>