LayoutTests/fast/animation/request-animation-frame-timestamps.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <script src="../../resources/js-test-pre.js"></script>
 </head>
 <body>
 <span id="e"></span>
 <span id="f"></span>
 <script>
 description("Tests the timestamps provided to requestAnimationFrame callbacks");

 function busyWait(millis) {
     var start = Date.now();
     while (Date.now()-start < millis) {}
 }

 var firstTimestamp = undefined;

 window.requestAnimationFrame(function(timestamp) {
     firstTimestamp = timestamp;
     shouldBeDefined("firstTimestamp");
     busyWait(10);
 });

 var secondTimestamp = undefined;
 window.requestAnimationFrame(function(timestamp) {
     secondTimestamp = timestamp;
     shouldBeDefined("secondTimestamp");
     shouldBe("firstTimestamp", "secondTimestamp");
 });

 if (window.testRunner)
     testRunner.displayAndTrackRepaints();

 if (window.testRunner)
     testRunner.waitUntilDone();

 setTimeout(function() {
     shouldBeDefined("firstTimestamp");
 }, 100);

 setTimeout(function() {
     isSuccessfullyParsed();
     if (window.testRunner)
         testRunner.notifyDone();
 }, 200);
 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<script src="../../resources/js-test-pre.js"></script>
	</head>
	<body>
	<span id="e"></span>
	<span id="f"></span>
	<script>
	description("Tests the timestamps provided to requestAnimationFrame callbacks");

	function busyWait(millis) {
	var start = Date.now();
	while (Date.now()-start < millis) {}
	}

	var firstTimestamp = undefined;

	window.requestAnimationFrame(function(timestamp) {
	firstTimestamp = timestamp;
	shouldBeDefined("firstTimestamp");
	busyWait(10);
	});

	var secondTimestamp = undefined;
	window.requestAnimationFrame(function(timestamp) {
	secondTimestamp = timestamp;
	shouldBeDefined("secondTimestamp");
	shouldBe("firstTimestamp", "secondTimestamp");
	});

	if (window.testRunner)
	testRunner.displayAndTrackRepaints();

	if (window.testRunner)
	testRunner.waitUntilDone();

	setTimeout(function() {
	shouldBeDefined("firstTimestamp");
	}, 100);

	setTimeout(function() {
	isSuccessfullyParsed();
	if (window.testRunner)
	testRunner.notifyDone();
	}, 200);
	</script>
	</body>
	</html>