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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=569520
-->
<head>
<title>Test for Bug 569520</title>
<script 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=569520">Mozilla Bug 569520</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 569520 **/
SimpleTest.waitForExplicitFinish();
SimpleTest.requestFlakyTimeout("untriaged");
var start = window.performance.now();
var firstListenerArg;
var secondListenerArg;
var thirdListenerTime;
// callback arg is in the same timeline as performance.now()
function thirdListener(t) {
thirdListenerTime = t;
ok(secondListenerArg >= firstListenerArg, // callback args from consecutive requestAnimationFrame
"Second listener should fire after first listener");
ok(thirdListenerTime >= secondListenerArg,
"Third listener should fire after second listener");
ok(firstListenerArg >= start, "First listener should fire after start");
SimpleTest.finish();
}
// callback arg is from requestAnimationFrame and comparable to performance.now()
function secondListener(t) {
secondListenerArg = t;
requestAnimationFrame(thirdListener);
}
function firstListener(t) {
firstListenerArg = t;
requestAnimationFrame(secondListener);
}
addLoadEvent(function() {
setTimeout(function() {
requestAnimationFrame(firstListener);
}, 100);
});
</script>
</pre>
</body>
</html>
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