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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=572649
+-->
+<head>
+ <title>Test for Bug 572649</title>
+ <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+ <script type="application/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<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 style context" assertions
+// on B2G emulator builds (bug XXXXXXX). The two frames that get incorrect
+// style context 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() {
+ area.removeEventListener("focus", arguments.callee, false);
+ setTimeout(function() {
+ is(area.scrollTop, 0, "The textarea's insertion point should not be scrolled into view");
+
+ SimpleTest.finish();
+ }, 0);
+ }, false);
+ setTimeout(function() {
+ var rect = area.getBoundingClientRect();
+ synthesizeMouse(area, rect.width - 5, 5, {});
+ }, 0);
+});
+</script>
+</pre>
+</body>
+</html>