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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=985988
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 985988</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">
/** Test for Bug 985988 **/
function handler() {
return false;
}
function reversedHandler() {
return true;
}
function test() {
var t = document.getElementById("testtarget");
t.onclick = handler;
var e = new MouseEvent("click", {cancelable: true});
t.dispatchEvent(e);
ok(e.defaultPrevented, "Should have prevented default handling.");
t.onclick = reversedHandler;
e = new MouseEvent("click", {cancelable: true});
t.dispatchEvent(e);
ok(!e.defaultPrevented, "Shouldn't have prevented default handling.");
// mouseover has reversed meaning for handler return value.
t.onmouseover = reversedHandler;
e = new MouseEvent("mouseover", {cancelable: true});
t.dispatchEvent(e);
ok(e.defaultPrevented, "Should have prevented default handling.");
t.onmouseover = handler;
e = new MouseEvent("mouseover", {cancelable: true});
t.dispatchEvent(e);
ok(!e.defaultPrevented, "Shouldn't have prevented default handling.");
// error has reversed meaning for handler return value.
t.onerror = reversedHandler;
e = new ErrorEvent("error", {cancelable: true});
t.dispatchEvent(e);
ok(e.defaultPrevented, "Should have prevented default handling.");
t.onerror = handler;
e = new MouseEvent("error", {cancelable: true});
t.dispatchEvent(e);
ok(!e.defaultPrevented, "Shouldn't have prevented default handling.");
SimpleTest.finish();
}
SimpleTest.waitForExplicitFinish();
addLoadEvent(test);
</script>
</head>
<body onload="test()">
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=985988">Mozilla Bug 985988</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<a href="#" id="testtarget">test target</a>
<pre id="test">
</pre>
</body>
</html>
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