test_bug569520.html

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<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>