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Test Info:

<!DOCTYPE HTML>
<html>
<!--
-->
<head>
<title>Test for Bug 590554</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>
<script type="application/javascript">
/** Test for Bug 590554 **/
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(function() {
var t = document.querySelector("textarea");
t.focus();
synthesizeKey("KEY_Enter");
is(t.value, "\n", "Pressing enter should work the first time");
synthesizeKey("KEY_Enter");
is(t.value, "\n", "Pressing enter should not work the second time");
SimpleTest.finish();
});
</script>
<textarea maxlength="1"></textarea>
</body>
</html>