LayoutTests/fast/text/text-node-remains-dirty-after-calling-surroundContents.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <title>This tests that the span content gets properly laid out after calling surroundContents.</title>
 <style>
 span {
 	font-family: -apple-system;
 	font-size: 12px;
     margin-right: 2px;
 }

 .highlight {
     text-decoration: underline;
 }
 </style>
 </head>
 <body>
 <span id=container>foobar </span>
 <br>PASS if foobar gets underlined while hovering.
 <script>
     var container = document.getElementById("container");
     var range = document.createRange();
     var newspan = document.createElement("span");
     newspan.className = "highlight";

     range.selectNodeContents(document.getElementById("container").firstChild);
     range.setEnd(document.getElementById("container").firstChild, 6);
     range.surroundContents(newspan);
 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>This tests that the span content gets properly laid out after calling surroundContents.</title>
	<style>
	span {
	font-family: -apple-system;
	font-size: 12px;
	margin-right: 2px;
	}

	.highlight {
	text-decoration: underline;
	}
	</style>
	</head>
	<body>
	<span id=container>foobar </span>
	<br>PASS if foobar gets underlined while hovering.
	<script>
	var container = document.getElementById("container");
	var range = document.createRange();
	var newspan = document.createElement("span");
	newspan.className = "highlight";

	range.selectNodeContents(document.getElementById("container").firstChild);
	range.setEnd(document.getElementById("container").firstChild, 6);
	range.surroundContents(newspan);
	</script>
	</body>
	</html>