LayoutTests/fast/parser/adoption-agency-unload-iframe-4.html - WebKit - Git at Google

 <html>
 <head>
 <script src="../../resources/testharness.js"></script>
 <script src="../../resources/testharnessreport.js"></script>
 </head>
 <body>
 <script>

 let test = async_test('An element removed by the adoption agency algorithm must not be inserted if it had been inserted elsewhere');

 var p;
 test.step(() => {
     const iframe = document.createElement('iframe');
     document.body.appendChild(iframe);

     let doc = iframe.contentDocument;
     doc.write(`<body><a id="target" href="#"></a>`);

     const target = doc.querySelector('a');
     target.onfocus = () => {
         target.onfocus = null;

         test.step(() => {
             let container = doc.querySelector('div');
             container.remove();
             doc.body.appendChild(p);
         });

         setTimeout(() => {
             test.step(() => {
                 assert_equals(p.parentNode, doc.body);
             });
             test.done();
             iframe.remove();
         }, 0);
     }

     doc.write(`<div><b><p><script>
         parent.p = document.querySelector('p');
         document.write('<link rel="stylesheet" href="data:,a${(new Date).toISOString() + Math.random()}">');
         location.hash = 'target';
     <\/script></b></p></div></body>`);
 });

 </script>
 </body>
 </html>
	<html>
	<head>
	<script src="../../resources/testharness.js"></script>
	<script src="../../resources/testharnessreport.js"></script>
	</head>
	<body>
	<script>

	let test = async_test('An element removed by the adoption agency algorithm must not be inserted if it had been inserted elsewhere');

	var p;
	test.step(() => {
	const iframe = document.createElement('iframe');
	document.body.appendChild(iframe);

	let doc = iframe.contentDocument;
	doc.write(`<body><a id="target" href="#"></a>`);

	const target = doc.querySelector('a');
	target.onfocus = () => {
	target.onfocus = null;

	test.step(() => {
	let container = doc.querySelector('div');
	container.remove();
	doc.body.appendChild(p);
	});

	setTimeout(() => {
	test.step(() => {
	assert_equals(p.parentNode, doc.body);
	});
	test.done();
	iframe.remove();
	}, 0);
	}

	doc.write(`<div><b><p><script>
	parent.p = document.querySelector('p');
	document.write('<link rel="stylesheet" href="data:,a${(new Date).toISOString() + Math.random()}">');
	location.hash = 'target';
	<\/script></b></p></div></body>`);
	});

	</script>
	</body>
	</html>