LayoutTests/scrollbars/scrollbar-large-overflow-rectangle.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
     <head>
     <title>absolute positioned element with large negative top value inside tall relative positioned box does not render scrollbars</title>
         <style>
             body, p{
               margin:0;
             }
             div{
                 position: relative;
                 height:3000px;
             }
             span{
                 position: absolute;
                 top:-33551000px;
             }
         </style>
         <script>
             if (window.testRunner) {
                 testRunner.dumpAsText();
             }

             function test() {
               var height = document.scrollingElement.scrollHeight;
               if (height == 3000)
                 document.getElementById("result").innerHTML = "PASS";
               else
                 document.getElementById("result").innerHTML = "<p style='color:red'>FAIL document.scrollingElement.scrollHeight = " + height +"</p>";
               }
         </script>
     </head>

     <body onload="test()">
     <div>
       <p> This page should be scrollable </p>
       <p id="result"> </p>
       <span style="visibility:hidden">filler <!--abs pos with very large negative top value--></span>
     </div>

     </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>absolute positioned element with large negative top value inside tall relative positioned box does not render scrollbars</title>
	<style>
	body, p{
	margin:0;
	}
	div{
	position: relative;
	height:3000px;
	}
	span{
	position: absolute;
	top:-33551000px;
	}
	</style>
	<script>
	if (window.testRunner) {
	testRunner.dumpAsText();
	}

	function test() {
	var height = document.scrollingElement.scrollHeight;
	if (height == 3000)
	document.getElementById("result").innerHTML = "PASS";
	else
	document.getElementById("result").innerHTML = "<p style='color:red'>FAIL document.scrollingElement.scrollHeight = " + height +"</p>";
	}
	</script>
	</head>

	<body onload="test()">
	<div>
	<p> This page should be scrollable </p>
	<p id="result"> </p>
	<span style="visibility:hidden">filler <!--abs pos with very large negative top value--></span>
	</div>

	</body>
	</html>