chromium/src/third_party/blink/web_tests/fast/dom/setAttributeNS.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <script src="../../resources/js-test.js"></script>

 <script>
 description("Test that setAttributeNS with a null namespaceURI actually sets it to the value null and not a string with the contents 'null'.");

 window.elem = document.createElementNS('http://www.example.org', 'test');
 elem.setAttributeNS(null, 'name', 'value');
 shouldBeNull('elem.attributes[0].namespaceURI');
 </script>
	<!DOCTYPE html>
	<script src="../../resources/js-test.js"></script>

	<script>
	description("Test that setAttributeNS with a null namespaceURI actually sets it to the value null and not a string with the contents 'null'.");

	window.elem = document.createElementNS('http://www.example.org', 'test');
	elem.setAttributeNS(null, 'name', 'value');
	shouldBeNull('elem.attributes[0].namespaceURI');
	</script>