test_bug597331.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=597331

-->

<head>

  <title>Test for Bug 597331</title>

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

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

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

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

  <style>

  textarea { border-color: white; }

  </style>

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=597331">Mozilla Bug 597331</a>

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

<div id="content">

<textarea>line1

line2

line3

</textarea>

</div>

<pre id="test">

<script type="application/javascript">

/** Test for Bug 597331 **/

SimpleTest.waitForExplicitFinish();

addLoadEvent(function() {

  SimpleTest.executeSoon(function() {

    var t = document.querySelector("textarea");

    t.focus();

    t.selectionStart = 4;

    t.selectionEnd = 4;

    SimpleTest.executeSoon(function() {

      t.getBoundingClientRect(); // flush layout

      var before = snapshotWindow(window, true);

      t.selectionStart = 5;

      t.selectionEnd = 5;

      t.addEventListener("keydown", function() {

        SimpleTest.executeSoon(function() {

          t.style.display = "block";

          document.body.offsetWidth;

          t.style.display = "";

          document.body.offsetWidth;

          is(t.selectionStart, 4, "Cursor should be moved correctly");

          is(t.selectionEnd, 4, "Cursor should be moved correctly");

          var after = snapshotWindow(window, true);

          var result = compareSnapshots(before, after, true);

          var msg = "The caret should be displayed correctly after reframing";

          if (!result[0]) {

            msg += "\nRESULT:\n" + result[2];

            msg += "\nREFERENCE:\n" + result[1];

          ok(result[0], msg);

          SimpleTest.finish();

});

      }, {once: true});

      synthesizeKey("KEY_ArrowLeft");

});

});

});

</script>

</pre>

</body>

</html>