LayoutTests/fast/dom/dom-constructors.html - WebKit - Git at Google

 <html>
 <head>
 <script src="../../resources/js-test-pre.js"></script>
 </head>
 <body>
 <div id="element" name="element_name"></div>
 <script>
 description('This test checks that all but a handful of dom constructors throw exceptions, and the rest return reasonable objects. It also tests that those constructors have higher precedence than a document element with the same ID or name.');

 var element = document.getElementById("element");

 // These objects should throw an exception when their constructor is called
 // with no arguments. (Some of them may have working constructors that require
 // arguments to be valid.)
 var objects_exception = [
     'Attr', 'CharacterData', 'CDATASection', 'Comment', 'Document',
     'DocumentFragment', 'DocumentType', 'Element', 'Entity',
     'EntityReference', 'HTMLDocument', 'Node', 'Notation',
     'ProcessingInstruction', 'Text', 'HTMLAllCollection', 'HTMLAnchorElement',
     'HTMLAppletElement', 'HTMLAreaElement', 'HTMLBaseElement',
     'HTMLBaseFontElement', 'HTMLBodyElement',
     'HTMLBRElement', 'HTMLButtonElement', 'HTMLCanvasElement',
     'HTMLDirectoryElement', 'HTMLDivElement', 'HTMLDListElement',
     'HTMLEmbedElement', 'HTMLFieldSetElement', 'HTMLFontElement',
     'HTMLFormElement', 'HTMLFrameElement', 'HTMLFrameSetElement',
     'HTMLHeadingElement', 'HTMLHeadElement', 'HTMLHRElement',
     'HTMLHtmlElement', 'HTMLIFrameElement', 'HTMLImageElement',
     'HTMLInputElement', 'HTMLLabelElement',
     'HTMLLegendElement', 'HTMLLIElement', 'HTMLLinkElement',
     'HTMLMapElement', 'HTMLMarqueeElement', 'HTMLMenuElement',
     'HTMLMetaElement', 'HTMLModElement', 'HTMLObjectElement',
     'HTMLOListElement', 'HTMLOptGroupElement', 'HTMLOptionElement',
     'HTMLParagraphElement', 'HTMLParamElement', 'HTMLPreElement',
     'HTMLQuoteElement', 'HTMLScriptElement', 'HTMLSelectElement',
     'HTMLStyleElement', 'HTMLTableCaptionElement',
     'HTMLTableColElement', 'HTMLTableElement',
     'HTMLTableSectionElement', 'HTMLTableCellElement',
     'HTMLTableRowElement', 'HTMLTextAreaElement', 'HTMLTitleElement',
     'HTMLUListElement', 'HTMLElement', 'CanvasRenderingContext2D',
     'Clipboard', 'Counter', 'CSSCharsetRule', 'CSSFontFaceRule',
     'CSSImportRule', 'CSSMediaRule', 'CSSPageRule',
     'CSSPrimitiveValue', 'CSSRule', 'CSSRuleList',
     'CSSStyleDeclaration', 'CSSStyleRule', 'CSSStyleSheet',
     'CSSValue', 'CSSValueList', 'DOMImplementation',
     'HTMLCollection', 'MediaList', 'MimeType',
     'MimeTypeArray', 'MutationEvent', 'NamedNodeMap',
     'NodeFilter', 'NodeList', 'Plugin',
     'PluginArray', 'Range', 'Rect', 'StyleSheet', 'StyleSheetList',
     'TextEvent', 'XPathResult', 'BarInfo',
     'CanvasGradient', 'CanvasPattern', 'Console', 'Selection',
     'Window', 'History', 'HTMLOptionsCollection', 'Location',
     'Navigator', 'NodeIterator', 'RGBColor', 'Screen', 'TreeWalker',
     'XPathExpression', 'Worker'
 ];

 // These objects should have a working constructor.
 var objects_constructor = [
     'DOMParser', 'XMLHttpRequest', 'XMLSerializer', 'XPathEvaluator',
     'XSLTProcessor'
 ];

 // These objects should have no constructor.
 var objects_no_constructor = [
     'EventTargetNode', 'UndetectableHTMLCollection',
     'XPathNSResolver', 'EventTarget', 'EventListener', 'NPObject'
 ];

 // These objects should have a working constructor, but their constructed
 // object names differ. This is therefore a map from constructor name to
 // constructed object.
 var objects_different_constructor = {
     'Audio': 'HTMLAudioElement',
     'Option': 'HTMLOptionElement',
     'Image': 'HTMLImageElement'
 }

 function TryAllocate(node) {
     var Cons = this[node];
     if (!Cons) return 'no constructor';
     try { return new Cons() + ''; }
     catch (e) { return 'exception'; }
 }

 function check(name, expected) {
     actual = TryAllocate(node);
     if (actual == expected) {
       document.write("PASS: " + name + " '" + expected + "'<br>");
     } else {
       document.write("FAIL: " + name + " wanted '" + expected + "', got '" +
           actual + "'<br>");
     }
 }

 for (var i = 0; i < objects_exception.length; i++) {
     var obj = objects_exception[i];
     shouldBe("TryAllocate('" + obj + "')", "'exception'");
 }

 for (var i = 0; i < objects_no_constructor.length; i++) {
     var obj = objects_no_constructor[i];
     shouldBe("TryAllocate('" + obj + "')", "'no constructor'");
 }

 for (var i = 0; i < objects_constructor.length; i++) {
     var obj = objects_constructor[i];
     shouldBe("TryAllocate('" + obj + "')", "'[object " + obj + "]'");
     element.id = obj;
     shouldBe("TryAllocate('" + obj + "')", "'[object " + obj + "]'");
     element.id = "element";
     element.name = obj;
     shouldBe("TryAllocate('" + obj + "')", "'[object " + obj + "]'");
     element.name = "element_name";
 }

 for (var obj in objects_different_constructor) {
     shouldBe("TryAllocate('" + obj + "')",
              "'[object " + objects_different_constructor[obj] + "]'");
     element.id = obj;
     shouldBe("TryAllocate('" + obj + "')",
              "'[object " + objects_different_constructor[obj] + "]'");
     element.id = "element";
     element.name = obj;
     shouldBe("TryAllocate('" + obj + "')",
              "'[object " + objects_different_constructor[obj] + "]'");
     element.name = "element_name";
 }
 </script>
 <script src="../../resources/js-test-post.js"></script>
 </body>
 </html>
	<html>
	<head>
	<script src="../../resources/js-test-pre.js"></script>
	</head>
	<body>
	<div id="element" name="element_name"></div>
	<script>
	description('This test checks that all but a handful of dom constructors throw exceptions, and the rest return reasonable objects. It also tests that those constructors have higher precedence than a document element with the same ID or name.');

	var element = document.getElementById("element");

	// These objects should throw an exception when their constructor is called
	// with no arguments. (Some of them may have working constructors that require
	// arguments to be valid.)
	var objects_exception = [
	'Attr', 'CharacterData', 'CDATASection', 'Comment', 'Document',
	'DocumentFragment', 'DocumentType', 'Element', 'Entity',
	'EntityReference', 'HTMLDocument', 'Node', 'Notation',
	'ProcessingInstruction', 'Text', 'HTMLAllCollection', 'HTMLAnchorElement',
	'HTMLAppletElement', 'HTMLAreaElement', 'HTMLBaseElement',
	'HTMLBaseFontElement', 'HTMLBodyElement',
	'HTMLBRElement', 'HTMLButtonElement', 'HTMLCanvasElement',
	'HTMLDirectoryElement', 'HTMLDivElement', 'HTMLDListElement',
	'HTMLEmbedElement', 'HTMLFieldSetElement', 'HTMLFontElement',
	'HTMLFormElement', 'HTMLFrameElement', 'HTMLFrameSetElement',
	'HTMLHeadingElement', 'HTMLHeadElement', 'HTMLHRElement',
	'HTMLHtmlElement', 'HTMLIFrameElement', 'HTMLImageElement',
	'HTMLInputElement', 'HTMLLabelElement',
	'HTMLLegendElement', 'HTMLLIElement', 'HTMLLinkElement',
	'HTMLMapElement', 'HTMLMarqueeElement', 'HTMLMenuElement',
	'HTMLMetaElement', 'HTMLModElement', 'HTMLObjectElement',
	'HTMLOListElement', 'HTMLOptGroupElement', 'HTMLOptionElement',
	'HTMLParagraphElement', 'HTMLParamElement', 'HTMLPreElement',
	'HTMLQuoteElement', 'HTMLScriptElement', 'HTMLSelectElement',
	'HTMLStyleElement', 'HTMLTableCaptionElement',
	'HTMLTableColElement', 'HTMLTableElement',
	'HTMLTableSectionElement', 'HTMLTableCellElement',
	'HTMLTableRowElement', 'HTMLTextAreaElement', 'HTMLTitleElement',
	'HTMLUListElement', 'HTMLElement', 'CanvasRenderingContext2D',
	'Clipboard', 'Counter', 'CSSCharsetRule', 'CSSFontFaceRule',
	'CSSImportRule', 'CSSMediaRule', 'CSSPageRule',
	'CSSPrimitiveValue', 'CSSRule', 'CSSRuleList',
	'CSSStyleDeclaration', 'CSSStyleRule', 'CSSStyleSheet',
	'CSSValue', 'CSSValueList', 'DOMImplementation',
	'HTMLCollection', 'MediaList', 'MimeType',
	'MimeTypeArray', 'MutationEvent', 'NamedNodeMap',
	'NodeFilter', 'NodeList', 'Plugin',
	'PluginArray', 'Range', 'Rect', 'StyleSheet', 'StyleSheetList',
	'TextEvent', 'XPathResult', 'BarInfo',
	'CanvasGradient', 'CanvasPattern', 'Console', 'Selection',
	'Window', 'History', 'HTMLOptionsCollection', 'Location',
	'Navigator', 'NodeIterator', 'RGBColor', 'Screen', 'TreeWalker',
	'XPathExpression', 'Worker'
	];

	// These objects should have a working constructor.
	var objects_constructor = [
	'DOMParser', 'XMLHttpRequest', 'XMLSerializer', 'XPathEvaluator',
	'XSLTProcessor'
	];

	// These objects should have no constructor.
	var objects_no_constructor = [
	'EventTargetNode', 'UndetectableHTMLCollection',
	'XPathNSResolver', 'EventTarget', 'EventListener', 'NPObject'
	];

	// These objects should have a working constructor, but their constructed
	// object names differ. This is therefore a map from constructor name to
	// constructed object.
	var objects_different_constructor = {
	'Audio': 'HTMLAudioElement',
	'Option': 'HTMLOptionElement',
	'Image': 'HTMLImageElement'
	}

	function TryAllocate(node) {
	var Cons = this[node];
	if (!Cons) return 'no constructor';
	try { return new Cons() + ''; }
	catch (e) { return 'exception'; }
	}

	function check(name, expected) {
	actual = TryAllocate(node);
	if (actual == expected) {
	document.write("PASS: " + name + " '" + expected + "'<br>");
	} else {
	document.write("FAIL: " + name + " wanted '" + expected + "', got '" +
	actual + "'<br>");
	}
	}

	for (var i = 0; i < objects_exception.length; i++) {
	var obj = objects_exception[i];
	shouldBe("TryAllocate('" + obj + "')", "'exception'");
	}

	for (var i = 0; i < objects_no_constructor.length; i++) {
	var obj = objects_no_constructor[i];
	shouldBe("TryAllocate('" + obj + "')", "'no constructor'");
	}

	for (var i = 0; i < objects_constructor.length; i++) {
	var obj = objects_constructor[i];
	shouldBe("TryAllocate('" + obj + "')", "'[object " + obj + "]'");
	element.id = obj;
	shouldBe("TryAllocate('" + obj + "')", "'[object " + obj + "]'");
	element.id = "element";
	element.name = obj;
	shouldBe("TryAllocate('" + obj + "')", "'[object " + obj + "]'");
	element.name = "element_name";
	}

	for (var obj in objects_different_constructor) {
	shouldBe("TryAllocate('" + obj + "')",
	"'[object " + objects_different_constructor[obj] + "]'");
	element.id = obj;
	shouldBe("TryAllocate('" + obj + "')",
	"'[object " + objects_different_constructor[obj] + "]'");
	element.id = "element";
	element.name = obj;
	shouldBe("TryAllocate('" + obj + "')",
	"'[object " + objects_different_constructor[obj] + "]'");
	element.name = "element_name";
	}
	</script>
	<script src="../../resources/js-test-post.js"></script>
	</body>
	</html>