LayoutTests/fast/images/image-copy-memory-usage.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 	<head>
 		<meta charset="UTF-8" />
 		<title>image-copy-memory-usage.html</title>
 		<script src="../../resources/js-test.js"></script>
 	</head>

 	<body>
 		<script type="text/javascript">
 			description("This is an automated test related to " +
 			    "<a href=\"https://bugs.webkit.org/show_bug.cgi?id=152374\">Bug 152374 - Reduce resource usage when " +
 			    "copying image to clipboard</a>.<br />" +
 			    "<br />" +
 			    "This tests how much memory is used while copying an animation into the clipboard. The animation " +
 			    "consists of 50 500x500 frames and, assuming 32 bits per pixel, will use 50 MB of memory when " +
 			    "uncompressed. To pass the test, after copying the animation to the clipboard, the memory usage of " +
 			    "the browser must not have increased by more than 200 MBs.<br />" +
 			    "<br />" +
 			    "In order to make this test more accurate it should be performed in a freshly started browser " +
 			    "session that has nothing else open and which has an empty cache.");

 			window.jsTestIsAsync = true;

 			var changeInCommittedVMBytes; // Needs to be global for shouldBeTrue() to see it.

 			function tryToSetUpAndRunTest()
 			{
 			    // Exit if the mallocStatistics() function is not available since it is needed to automatically
 			    // determine the results of the test.
 			    if (!window.internals || !window.internals.mallocStatistics) {
 			        debug("The mallocStatistics() function is not available, you will need to check memory usage " +
 			            "manually. First record the memory usage of the browser. Then copy the animation into the " +
 			            "clipboard. Finally check the memory usage of the browser again and subtract the amount of " +
 			            "memory that it was using previously. If the difference is greater than 200 MBs, the browser " +
 			           "has failed the test.<br />");
 			        return;
 			    }

 			    var initialCommittedVMBytes = window.internals.mallocStatistics().committedVMBytes;
 			    // Add a listener for clipboard copy events which will then check how much memory was used to perform
 			    // the copy and also finish the test. setTimeout() is used with a zero delay in order to cause this to
 			    // run after the copy is finished.
 			    document.getElementById("animationFrame").contentWindow.document.addEventListener("copy", function() {
 			        setTimeout(
 			        	function()
 			            {
 			                var finalCommittedVMBytes = window.internals.mallocStatistics().committedVMBytes;
 			                changeInCommittedVMBytes = finalCommittedVMBytes - initialCommittedVMBytes;
 			                shouldBeTrue("changeInCommittedVMBytes < 200000000");
 			                window.finishJSTest();
 			            },
 			            0) },
 			        false);

 			    // Exit if execCommand("copy") is not supported since that is needed to automatically copy the animation
 			    // to the clipboard.
 			    if (!document.queryCommandSupported('copy')) {
 			        debug("execCommand(\"copy\") is not supported. You will need to manually copy the animation into " +
 			            "the clipboard to finish the test.<br />");
 			        return;
 			    }

 			    document.getElementById("animationFrame").contentWindow.document.execCommand("copy");
 			}
 		</script>

 		<!-- The "Copy Image" option doesn't show up in the image context menu if using a data URI and that might make
 		-    it difficult to perform a copy manually so load the image from a file instead.
 		-->
 		<iframe id="animationFrame" width="500" height="500" onload="tryToSetUpAndRunTest()"
 		  src="resources/dot-moving-in-a-circle-animation.gif">
 		</iframe>
 	</body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8" />
	<title>image-copy-memory-usage.html</title>
	<script src="../../resources/js-test.js"></script>
	</head>

	<body>
	<script type="text/javascript">
	description("This is an automated test related to " +
	"<a href=\"https://bugs.webkit.org/show_bug.cgi?id=152374\">Bug 152374 - Reduce resource usage when " +
	"copying image to clipboard</a>.<br />" +
	"<br />" +
	"This tests how much memory is used while copying an animation into the clipboard. The animation " +
	"consists of 50 500x500 frames and, assuming 32 bits per pixel, will use 50 MB of memory when " +
	"uncompressed. To pass the test, after copying the animation to the clipboard, the memory usage of " +
	"the browser must not have increased by more than 200 MBs.<br />" +
	"<br />" +
	"In order to make this test more accurate it should be performed in a freshly started browser " +
	"session that has nothing else open and which has an empty cache.");

	window.jsTestIsAsync = true;

	var changeInCommittedVMBytes; // Needs to be global for shouldBeTrue() to see it.

	function tryToSetUpAndRunTest()
	{
	// Exit if the mallocStatistics() function is not available since it is needed to automatically
	// determine the results of the test.
	if (!window.internals \|\| !window.internals.mallocStatistics) {
	debug("The mallocStatistics() function is not available, you will need to check memory usage " +
	"manually. First record the memory usage of the browser. Then copy the animation into the " +
	"clipboard. Finally check the memory usage of the browser again and subtract the amount of " +
	"memory that it was using previously. If the difference is greater than 200 MBs, the browser " +
	"has failed the test.<br />");
	return;
	}

	var initialCommittedVMBytes = window.internals.mallocStatistics().committedVMBytes;
	// Add a listener for clipboard copy events which will then check how much memory was used to perform
	// the copy and also finish the test. setTimeout() is used with a zero delay in order to cause this to
	// run after the copy is finished.
	document.getElementById("animationFrame").contentWindow.document.addEventListener("copy", function() {
	setTimeout(
	function()
	{
	var finalCommittedVMBytes = window.internals.mallocStatistics().committedVMBytes;
	changeInCommittedVMBytes = finalCommittedVMBytes - initialCommittedVMBytes;
	shouldBeTrue("changeInCommittedVMBytes < 200000000");
	window.finishJSTest();
	},
	0) },
	false);

	// Exit if execCommand("copy") is not supported since that is needed to automatically copy the animation
	// to the clipboard.
	if (!document.queryCommandSupported('copy')) {
	debug("execCommand(\"copy\") is not supported. You will need to manually copy the animation into " +
	"the clipboard to finish the test.<br />");
	return;
	}

	document.getElementById("animationFrame").contentWindow.document.execCommand("copy");
	}
	</script>

	<!-- The "Copy Image" option doesn't show up in the image context menu if using a data URI and that might make
	- it difficult to perform a copy manually so load the image from a file instead.
	-->
	<iframe id="animationFrame" width="500" height="500" onload="tryToSetUpAndRunTest()"
	src="resources/dot-moving-in-a-circle-animation.gif">
	</iframe>
	</body>
	</html>