LayoutTests/compositing/animation/animated-composited-inside-hidden.html - WebKit - Git at Google

 <!DOCTYPE html>

 <html>
 <head>
   <style>
     .box {
       position: relative;
       width: 100px;
       height: 100px;
       border: 1px solid black;
     }

     .middle {
       visibility: hidden;
     }

     .inner {
       width: 80px;
       height: 80px;
       -webkit-animation: spin 5s linear infinite;
     }

     @-webkit-keyframes spin {
       0% { -webkit-transform: rotate(0); }
       100% { -webkit-transform: rotate(360deg); }
     }

     #transition-tester {
       position: relative;
       left: 0;
       background-color: blue;
       -webkit-transition: left 1s linear;
     }

     #container.animating #transition-tester {
       left: 20px;
     }

   </style>
   <script src="../../transitions/resources/transition-test-helpers.js"></script>
   <script>
     const expectedValues = [
       // [time, element-id, property, expected-value, tolerance]
       [0.5, 'transition-tester', 'left', 10, 2],
     ];

     function setupTest()
     {
       document.getElementById('container').className = 'animating';
     }

     runTransitionTest(expectedValues, setupTest, usePauseAPI);
   </script>
 </head>
 <body>

 <p>Tests that starting an animation on an element inside a visibility:hidden element does not block later transitions.</p>
   <div id="container" class="container">
     <div id="transition-tester" class="box"></div>

     <div class="middle box">
       <div class="inner box"></div>
     </div>
   </div>

 <div id="result"></div>

 </body>
 </html>
	<!DOCTYPE html>

	<html>
	<head>
	<style>
	.box {
	position: relative;
	width: 100px;
	height: 100px;
	border: 1px solid black;
	}

	.middle {
	visibility: hidden;
	}

	.inner {
	width: 80px;
	height: 80px;
	-webkit-animation: spin 5s linear infinite;
	}

	@-webkit-keyframes spin {
	0% { -webkit-transform: rotate(0); }
	100% { -webkit-transform: rotate(360deg); }
	}

	#transition-tester {
	position: relative;
	left: 0;
	background-color: blue;
	-webkit-transition: left 1s linear;
	}

	#container.animating #transition-tester {
	left: 20px;
	}

	</style>
	<script src="../../transitions/resources/transition-test-helpers.js"></script>
	<script>
	const expectedValues = [
	// [time, element-id, property, expected-value, tolerance]
	[0.5, 'transition-tester', 'left', 10, 2],
	];

	function setupTest()
	{
	document.getElementById('container').className = 'animating';
	}

	runTransitionTest(expectedValues, setupTest, usePauseAPI);
	</script>
	</head>
	<body>

	<p>Tests that starting an animation on an element inside a visibility:hidden element does not block later transitions.</p>
	<div id="container" class="container">
	<div id="transition-tester" class="box"></div>

	<div class="middle box">
	<div class="inner box"></div>
	</div>
	</div>

	<div id="result"></div>

	</body>
	</html>