test_bug572649.html

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<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=572649

-->

<head>

  <title>Test for Bug 572649</title>

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

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

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

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<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=572649">Mozilla Bug 572649</a>

<p id="display">

  <textarea id="area" rows="5">

  Here

is

  some

  very

  long

  text

  that

  we're

  using

for

  testing

  purposes

  </textarea>

</p>

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

</div>

<pre id="test">

<script type="application/javascript">

/** Test for Bug 572649 **/

SimpleTest.waitForExplicitFinish();

// We intermittently trigger two "Wrong parent ComputedStyle" assertions

// on B2G emulator builds (bug XXXXXXX).  The two frames that get incorrect

// ComputedStyle parents are scroll bar parts in the <textarea>.

SimpleTest.expectAssertions(0, 2);

addLoadEvent(function() {

  var area = document.getElementById("area");

  is(area.scrollTop, 0, "The textarea should not be scrolled initially");

  area.addEventListener("focus", function() {

    setTimeout(function() {

      is(area.scrollTop, 0, "The textarea's insertion point should not be scrolled into view");

      SimpleTest.finish();

    }, 0);

  }, {once: true});

  setTimeout(function() {

    var rect = area.getBoundingClientRect();

    synthesizeMouse(area, rect.width - 5, 5, {});

  }, 0);

});

</script>

</pre>

</body>

</html>