LayoutTests/fast/dom/ImageDocument-world-leak.html - WebKit - Git at Google

 <head>
 <script>
 function gc() {
     if (window.GCController)
         GCController.collect();
 }

 function numberOfLiveDocuments() {
     if (window.internals)
         return window.internals.numberOfLiveDocuments();
     return 1;
 }

 gc();

 iterationsToRun = 10;
 iterationsRemaining = iterationsToRun;
 if (window.testRunner) {
     testRunner.dumpAsText();
     testRunner.waitUntilDone();
 }

 function test() {
     var f = document.getElementById("frame");
     f.onload = function() {
         f.contentDocument.open();
         f.contentDocument.close();
         --iterationsRemaining;
         if (iterationsRemaining)
             setTimeout("test()", 0);
         else {
             gc();
             var numberOfLiveDocumentsDelta = numberOfLiveDocuments() - numberOfLiveDocumentsAtStart;
             var out = document.getElementById("out");
             if (numberOfLiveDocumentsDelta < iterationsToRun)
                 out.innerText += "PASS: Less than " + iterationsToRun + " new documents since test began.";
             else
                 out.innerText += "FAIL: Too many new documents since test began: " + numberOfLiveDocumentsDelta;
             if (window.testRunner)
                 testRunner.notifyDone();
         }
     }
     f.setAttribute("src", "resources/apple.gif");
 }

 function begin() {
     numberOfLiveDocumentsAtStart = numberOfLiveDocuments();
     test();
 }
 </script>
 </head>
 <body onload="begin()">
     <p>Test that ImageDocuments don't leak their world. </p>
     <pre id="out"></pre>
     <iframe id="frame"></iframe>
 </body>
	<head>
	<script>
	function gc() {
	if (window.GCController)
	GCController.collect();
	}

	function numberOfLiveDocuments() {
	if (window.internals)
	return window.internals.numberOfLiveDocuments();
	return 1;
	}

	gc();

	iterationsToRun = 10;
	iterationsRemaining = iterationsToRun;
	if (window.testRunner) {
	testRunner.dumpAsText();
	testRunner.waitUntilDone();
	}

	function test() {
	var f = document.getElementById("frame");
	f.onload = function() {
	f.contentDocument.open();
	f.contentDocument.close();
	--iterationsRemaining;
	if (iterationsRemaining)
	setTimeout("test()", 0);
	else {
	gc();
	var numberOfLiveDocumentsDelta = numberOfLiveDocuments() - numberOfLiveDocumentsAtStart;
	var out = document.getElementById("out");
	if (numberOfLiveDocumentsDelta < iterationsToRun)
	out.innerText += "PASS: Less than " + iterationsToRun + " new documents since test began.";
	else
	out.innerText += "FAIL: Too many new documents since test began: " + numberOfLiveDocumentsDelta;
	if (window.testRunner)
	testRunner.notifyDone();
	}
	}
	f.setAttribute("src", "resources/apple.gif");
	}

	function begin() {
	numberOfLiveDocumentsAtStart = numberOfLiveDocuments();
	test();
	}
	</script>
	</head>
	<body onload="begin()">
	<p>Test that ImageDocuments don't leak their world. </p>
	<pre id="out"></pre>
	<iframe id="frame"></iframe>
	</body>