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',
     'DocumentType',
     'Element',
     'HTMLDocument',
     'Node',
     'ProcessingInstruction',
     'HTMLAllCollection',
     'HTMLAnchorElement',
     'HTMLAreaElement',
     'HTMLBaseElement',
     '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',
     'Counter',
     'CSSFontFaceRule',
     'CSSImportRule',
     'CSSMediaRule',
     'CSSPageRule',
     'CSSPrimitiveValue',
     'CSSRule',
     'CSSRuleList',
     'CSSStyleDeclaration',
     'CSSStyleRule',
     'CSSStyleSheet',
     'CSSValue',
     'CSSValueList',
     'DOMImplementation',
     'HTMLCollection',
     'MediaList',
     'MimeType',
     'MimeTypeArray',
     'MutationEvent',
     'NamedNodeMap',
     'NodeFilter',
     'NodeList',
     'Plugin',
     'PluginArray',
     '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 = [
     'Comment',
     'DOMParser',
     'DataTransfer',
     'Document',
     'DocumentFragment',
     'EventTarget',
     'Range',
     'Text',
     'XMLHttpRequest',
     'XMLSerializer',
     'XPathEvaluator',
     'XSLTProcessor'
 ];

 // These objects should have no constructor.
 var objects_no_constructor = [
     'EventTargetNode', 'UndetectableHTMLCollection',
     'XPathNSResolver', '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 Object.prototype.toString.call(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',
	'DocumentType',
	'Element',
	'HTMLDocument',
	'Node',
	'ProcessingInstruction',
	'HTMLAllCollection',
	'HTMLAnchorElement',
	'HTMLAreaElement',
	'HTMLBaseElement',
	'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',
	'Counter',
	'CSSFontFaceRule',
	'CSSImportRule',
	'CSSMediaRule',
	'CSSPageRule',
	'CSSPrimitiveValue',
	'CSSRule',
	'CSSRuleList',
	'CSSStyleDeclaration',
	'CSSStyleRule',
	'CSSStyleSheet',
	'CSSValue',
	'CSSValueList',
	'DOMImplementation',
	'HTMLCollection',
	'MediaList',
	'MimeType',
	'MimeTypeArray',
	'MutationEvent',
	'NamedNodeMap',
	'NodeFilter',
	'NodeList',
	'Plugin',
	'PluginArray',
	'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 = [
	'Comment',
	'DOMParser',
	'DataTransfer',
	'Document',
	'DocumentFragment',
	'EventTarget',
	'Range',
	'Text',
	'XMLHttpRequest',
	'XMLSerializer',
	'XPathEvaluator',
	'XSLTProcessor'
	];

	// These objects should have no constructor.
	var objects_no_constructor = [
	'EventTargetNode', 'UndetectableHTMLCollection',
	'XPathNSResolver', '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 Object.prototype.toString.call(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>