chromium/third_party/blink/web_tests/fast/dom/innerHTML-escaping-attribute.html

<html>
<head>
<meta charset="utf-8">
<script>
if (window.testRunner)
    testRunner.dumpAsText();
</script>
<script>
function getContent() {
   var regx=new RegExp('&nbsp;','gi');
   if (document.body.innerHTML.search("&nbsp;&nbsp;'&quot;") < 0)
       document.write("FAIL: <xmp>" + document.body.innerHTML + "</xmp>");
   else
       document.write("PASS<p>");
}
</script>
</head>
<body onload="getContent()"><div id="div" foo="&nbsp; '&quot;"></div></body></html>