gecko-dev/dom/html/test/test_bug536895.html

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HTML

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=536895
-->
<head>
<title>Test for Bug 536895</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.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=536895">Mozilla Bug 536895</a>
<p id="display"></p>
<div id="content" style="display: none">
<textarea id="t"></textarea>
<input id="i" type="text">
<input id="p" type="password">
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 536895 **/
function checkNegativeMaxLengthException(element)
{
caught = false;
try {
element.setAttribute('maxLength', -10);
} catch(e) {
caught = true;
}
ok(!caught, "Setting maxLength attribute to a negative value shouldn't throw an exception");
caught = false;
try {
element.maxLength = -20;
} catch(e) {
is(e.name, "IndexSizeError", "Should be an IndexSizeError exception");
caught = true;
}
ok(caught, "Setting negative maxLength from the DOM should throw an exception");
is(element.getAttribute('maxLength'), "-10", "When the exception is raised, the maxLength attribute shouldn't change");
}
/* TODO: correct behavior may be checked for email, telephone, url and search input types */
checkNegativeMaxLengthException(document.getElementById('t'));
checkNegativeMaxLengthException(document.getElementById('i'));
checkNegativeMaxLengthException(document.getElementById('p'));
</script>
</pre>
</body>
</html>