<!DOCTYPE html>
<html>
<body>
<script src="../../resources/js-test-pre.js"></script>
<script>
description("Tests that XMLSerializer.serializeToString() properly encodes entities in attribute values when the Element's associated document is an HTMLDocument.");
const node = document.createElement("test");
node.setAttribute("a", "<potato/>");
shouldBeEqualToString('(new XMLSerializer()).serializeToString(node)', '<test xmlns="http://www.w3.org/1999/xhtml" a="&lt;potato/&gt;"></test>');
</script>
<script src="../../resources/js-test-post.js"></script>
</body>
</html>