LayoutTests/animations/stacking-context-unchanged-while-running.html - WebKit - Git at Google

 <!DOCTYPE html>

 <html>
 <head>
     <title>Tests that an element with an animation whose keyframes affect stacking context creates stacking context throughout the animation.</title>
     <style>
         .box {
             position: absolute;
             top: 0;
             left: 0;
             height: 100px;
             width: 100px;
         }

         #animating {
             animation: move 2s 1;
             background-color: orange;
         }

         @keyframes move {
             from { z-index: 1; }
             10%  { z-index: auto; }
             90%  { z-index: auto; }
             to   { z-index: 2; }
         }

         .behind {
             background-color: blue;
             top: 25px;
             left: 50px;
             z-index: 1;
         }

         .front {
             top: 50px;
             left: 25px;
             background-color: green;
             z-index: 2;
         }

         #result {
             opacity: 0;
         }
     </style>
     <script src="resources/animation-test-helpers.js" type="text/javascript"></script>
     <script type="text/javascript">
         const expectedValues = [
             // [animation-name, time, element-id, property, expected-value, tolerance]
             ["move", 0.5, "animating", "z-index", 0, 0],
         ];

         var doPixelTest = true;
         var disablePauseAPI = false;
         runAnimationTest(expectedValues, null, undefined, disablePauseAPI, doPixelTest);
     </script>
 </head>
 <body>

 <div class="behind box"></div>
 <div id="animating" class="box">
     <div class="front box"></div>
 </div>
 <div id="result"></div>
 </body>
 </html>
	<!DOCTYPE html>

	<html>
	<head>
	<title>Tests that an element with an animation whose keyframes affect stacking context creates stacking context throughout the animation.</title>
	<style>
	.box {
	position: absolute;
	top: 0;
	left: 0;
	height: 100px;
	width: 100px;
	}

	#animating {
	animation: move 2s 1;
	background-color: orange;
	}

	@keyframes move {
	from { z-index: 1; }
	10% { z-index: auto; }
	90% { z-index: auto; }
	to { z-index: 2; }
	}

	.behind {
	background-color: blue;
	top: 25px;
	left: 50px;
	z-index: 1;
	}

	.front {
	top: 50px;
	left: 25px;
	background-color: green;
	z-index: 2;
	}

	#result {
	opacity: 0;
	}
	</style>
	<script src="resources/animation-test-helpers.js" type="text/javascript"></script>
	<script type="text/javascript">
	const expectedValues = [
	// [animation-name, time, element-id, property, expected-value, tolerance]
	["move", 0.5, "animating", "z-index", 0, 0],
	];

	var doPixelTest = true;
	var disablePauseAPI = false;
	runAnimationTest(expectedValues, null, undefined, disablePauseAPI, doPixelTest);
	</script>
	</head>
	<body>

	<div class="behind box"></div>
	<div id="animating" class="box">
	<div class="front box"></div>
	</div>
	<div id="result"></div>
	</body>
	</html>