LayoutTests/compositing/scroll-painted-composited-content.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
     <title>Test scrolling with composited content that has already been painted</title>
     <style>
         body {
             width: 600px;
         }
         div {
             -webkit-transform: translateZ(0);
             width: 1000px;
             height: 800px;
         }
     </style>
 </head>
 <body>
     <p>Test for <a href="https://bugs.webkit.org/show_bug.cgi?id=52720">Bug 52720 - REGRESSION
     (r75987): Assertion failure in WebView::scrollBackingStore when scrolling page with composited
     content</a>. The test passes if it doesn't assert in Debug builds.</p>

     <div></div>

     <script>
         if (window.layoutTestController) {
             layoutTestController.dumpAsText();
             // Force a paint so that the content will be painted at the current scroll offset (0x0)
             // before we scroll.
             layoutTestController.display();
         }
         window.scrollBy(300, 0);
     </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Test scrolling with composited content that has already been painted</title>
	<style>
	body {
	width: 600px;
	}
	div {
	-webkit-transform: translateZ(0);
	width: 1000px;
	height: 800px;
	}
	</style>
	</head>
	<body>
	<p>Test for <a href="https://bugs.webkit.org/show_bug.cgi?id=52720">Bug 52720 - REGRESSION
	(r75987): Assertion failure in WebView::scrollBackingStore when scrolling page with composited
	content</a>. The test passes if it doesn't assert in Debug builds.</p>

	<div></div>

	<script>
	if (window.layoutTestController) {
	layoutTestController.dumpAsText();
	// Force a paint so that the content will be painted at the current scroll offset (0x0)
	// before we scroll.
	layoutTestController.display();
	}
	window.scrollBy(300, 0);
	</script>
	</body>
	</html>