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Test Info:

<!DOCTYPE HTML>
<html>
<!--
-->
<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>