LayoutTests/fast/performance/performance-now-crash-on-navigated-window.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <script src="../../resources/js-test-pre.js"></script>
 </head>
 <body>
 <script>
     jsTestIsAsync = true;
     description("Tests how the performance object works when it's owning window is not fully active due to navigation.");

     var perfFromInitialFrame;

     // Called by initialFrame.html
     function initialFrameLoaded()
     {
         var otherWindow = document.getElementById("frame").contentWindow;
         perfFromInitialFrame = otherWindow.performance;
         otherWindow.location.href = "secondFrame.html";
     }

     // Called by secondFrame.html
     function secondFrameLoaded()
     {
         // This should not crash.
         value = perfFromInitialFrame.now();

         shouldNotBe('value', 'undefined');

         finishJSTest();
     }
 </script>
 <script src="../../resources/js-test-post.js"></script>
 <iframe id="frame" src="resources/initialFrame.html"></iframe>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<script src="../../resources/js-test-pre.js"></script>
	</head>
	<body>
	<script>
	jsTestIsAsync = true;
	description("Tests how the performance object works when it's owning window is not fully active due to navigation.");

	var perfFromInitialFrame;

	// Called by initialFrame.html
	function initialFrameLoaded()
	{
	var otherWindow = document.getElementById("frame").contentWindow;
	perfFromInitialFrame = otherWindow.performance;
	otherWindow.location.href = "secondFrame.html";
	}

	// Called by secondFrame.html
	function secondFrameLoaded()
	{
	// This should not crash.
	value = perfFromInitialFrame.now();

	shouldNotBe('value', 'undefined');

	finishJSTest();
	}
	</script>
	<script src="../../resources/js-test-post.js"></script>
	<iframe id="frame" src="resources/initialFrame.html"></iframe>
	</body>
	</html>