LayoutTests/fast/dom/partial-layout-overlay-scrollbars.html - experimental/chromium/blink - Git at Google

 <!DOCTYPE HTML>
 <html>
 <script src="../../resources/testharness.js"></script>
 <script src="../../resources/testharnessreport.js"></script>
 <link rel="stylesheet" href="../../resources/testharness.css">
 <head>
 <style>
 * {
     margin: 0;
     padding: 0;
 }

 #makespace {
     height: 5000px;
 }
 </style>
 </head>
 <body>
 <div id="makespace"></div>
 <div id="measure"></div>
 <script>
     if (window.testRunner)
         testRunner.dumpAsText();

     if (window.internals)
         window.internals.settings.setOverlayScrollbarsEnabled(true);

     var test = async_test("Test that partial layout works with overlay scrollbars.");
     setTimeout(function() {
         test.step(function() {
             var measure = document.getElementById('measure');
             var measureWidth = measure.offsetWidth; // Partial layout occurs here!

             assert_equals(measureWidth, document.body.offsetWidth);
             assert_equals(measureWidth, window.innerWidth);
         });

         test.done();
     }, 0);
 </script>
 </body>
 </html>
	<!DOCTYPE HTML>
	<html>
	<script src="../../resources/testharness.js"></script>
	<script src="../../resources/testharnessreport.js"></script>
	<link rel="stylesheet" href="../../resources/testharness.css">
	<head>
	<style>
	* {
	margin: 0;
	padding: 0;
	}

	#makespace {
	height: 5000px;
	}
	</style>
	</head>
	<body>
	<div id="makespace"></div>
	<div id="measure"></div>
	<script>
	if (window.testRunner)
	testRunner.dumpAsText();

	if (window.internals)
	window.internals.settings.setOverlayScrollbarsEnabled(true);

	var test = async_test("Test that partial layout works with overlay scrollbars.");
	setTimeout(function() {
	test.step(function() {
	var measure = document.getElementById('measure');
	var measureWidth = measure.offsetWidth; // Partial layout occurs here!

	assert_equals(measureWidth, document.body.offsetWidth);
	assert_equals(measureWidth, window.innerWidth);
	});

	test.done();
	}, 0);
	</script>
	</body>
	</html>