LayoutTests/media/video-load-preload-metadata.html - WebKit - Git at Google

 <html>
     <head>
         <script src="media-file.js"></script>
         <script src="video-test.js"></script>
         <script>
             var playbackStarted = false;
             function start()
             {
                 findMediaElement();
                 video.src = findMediaFile("video", "content/test");

                 testExpected("video.preload", "metadata");
                 waitForEvent('loadedmetadata', onLoadedMetadata);
                 waitForEvent('canplaythrough', onCanPlayThrough);
                 failTestIn(2000);
             }
             function onLoadedMetadata()
             {
                 testExpected("video.readyState", HTMLMediaElement.HAVE_ENOUGH_DATA, "<");

                 setTimeout(function () {
                     testExpected("video.buffered.length", 0, "==");
                     playbackStarted = true;
                     run("video.play()");
                 }, 250);
             }
             function onCanPlayThrough()
             {
                 test("playbackStarted");
                 testExpected("video.buffered.length", 0, ">");
                 endTest();
             }
         </script>
     </head>

     <body onload="start()">
         <video controls preload="metadata"></video>
         <p>Test that preload="metadata" disables buffering before playback.</p>
     </body>
 </html>
	<html>
	<head>
	<script src="media-file.js"></script>
	<script src="video-test.js"></script>
	<script>
	var playbackStarted = false;
	function start()
	{
	findMediaElement();
	video.src = findMediaFile("video", "content/test");

	testExpected("video.preload", "metadata");
	waitForEvent('loadedmetadata', onLoadedMetadata);
	waitForEvent('canplaythrough', onCanPlayThrough);
	failTestIn(2000);
	}
	function onLoadedMetadata()
	{
	testExpected("video.readyState", HTMLMediaElement.HAVE_ENOUGH_DATA, "<");

	setTimeout(function () {
	testExpected("video.buffered.length", 0, "==");
	playbackStarted = true;
	run("video.play()");
	}, 250);
	}
	function onCanPlayThrough()
	{
	test("playbackStarted");
	testExpected("video.buffered.length", 0, ">");
	endTest();
	}
	</script>
	</head>

	<body onload="start()">
	<video controls preload="metadata"></video>
	<p>Test that preload="metadata" disables buffering before playback.</p>
	</body>
	</html>