LayoutTests/fast/dom/nodelist-item-parameter.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <link rel="help" href="http://www.w3.org/TR/2012/WD-dom-20121206/#dom-nodelist-item">
 <script src="../../resources/js-test-pre.js"></script>
 </head>
 <body>
 <span id="target">
     <div id="a"></div>
     <div id="b"></div>
 </span>
 <script>
 description("Tests that the NodeList.item() argument is correctly validated.");

 var nodeList = document.getElementById("target").querySelectorAll('div');
 shouldBe("nodeList.__proto__", "NodeList.prototype");

 shouldBeEqualToString("nodeList.item(0).id", "a");
 shouldBeEqualToString("nodeList.item(1).id", "b");
 shouldBeNull("nodeList.item(2)");
 shouldBeNull("nodeList.item(-1)");
 shouldBeEqualToString("nodeList.item(-4294967295).id", "b"); // Wraps to 1.
 shouldThrow("nodeList.item()", "'TypeError: Not enough arguments'");
 </script>
 <script src="../../resources/js-test-post.js"></script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<link rel="help" href="http://www.w3.org/TR/2012/WD-dom-20121206/#dom-nodelist-item">
	<script src="../../resources/js-test-pre.js"></script>
	</head>
	<body>
	<span id="target">
	<div id="a"></div>
	<div id="b"></div>
	</span>
	<script>
	description("Tests that the NodeList.item() argument is correctly validated.");

	var nodeList = document.getElementById("target").querySelectorAll('div');
	shouldBe("nodeList.__proto__", "NodeList.prototype");

	shouldBeEqualToString("nodeList.item(0).id", "a");
	shouldBeEqualToString("nodeList.item(1).id", "b");
	shouldBeNull("nodeList.item(2)");
	shouldBeNull("nodeList.item(-1)");
	shouldBeEqualToString("nodeList.item(-4294967295).id", "b"); // Wraps to 1.
	shouldThrow("nodeList.item()", "'TypeError: Not enough arguments'");
	</script>
	<script src="../../resources/js-test-post.js"></script>
	</body>
	</html>