third_party/WebKit/LayoutTests/fast/dom/dom-constructors.html

   1 <html>
   2 <head>
   3 <script src="../../resources/js-test.js"></script>
   4 </head>
   5 <body>
   6 <div id="element" name="element_name"></div>
   7 <script>
   8 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.');
   9
  10 var element = document.getElementById("element");
  11
  12 // These objects should throw an exception when their constructor is called
  13 // with no arguments. (Some of them may have working constructors that require
  14 // arguments to be valid.)
  15 var objects_exception = [
  16     'Attr',
  17     'CharacterData',
  18     'CDATASection',
  19     'Document',
  20     'DocumentType',
  21     'Element',
  22     'EventTarget',
  23     'HTMLDocument',
  24     'Node',
  25     'ProcessingInstruction',
  26     'HTMLAllCollection',
  27     'HTMLAnchorElement',
  28     'HTMLAreaElement',
  29     'HTMLBaseElement',
  30     'HTMLBodyElement',
  31     'HTMLBRElement',
  32     'HTMLButtonElement',
  33     'HTMLCanvasElement',
  34     'HTMLDirectoryElement',
  35     'HTMLDivElement',
  36     'HTMLDListElement',
  37     'HTMLEmbedElement',
  38     'HTMLFieldSetElement',
  39     'HTMLFontElement',
  40     'HTMLFormElement',
  41     'HTMLFrameElement',
  42     'HTMLFrameSetElement',
  43     'HTMLHeadingElement',
  44     'HTMLHeadElement',
  45     'HTMLHRElement',
  46     'HTMLHtmlElement',
  47     'HTMLIFrameElement',
  48     'HTMLImageElement',
  49     'HTMLInputElement',
  50     'HTMLLabelElement',
  51     'HTMLLegendElement',
  52     'HTMLLIElement',
  53     'HTMLLinkElement',
  54     'HTMLMapElement',
  55     'HTMLMarqueeElement',
  56     'HTMLMenuElement',
  57     'HTMLMetaElement',
  58     'HTMLModElement',
  59     'HTMLObjectElement',
  60     'HTMLOListElement',
  61     'HTMLOptGroupElement',
  62     'HTMLOptionElement',
  63     'HTMLParagraphElement',
  64     'HTMLParamElement',
  65     'HTMLPreElement',
  66     'HTMLQuoteElement',
  67     'HTMLScriptElement',
  68     'HTMLSelectElement',
  69     'HTMLStyleElement',
  70     'HTMLTableCaptionElement',
  71     'HTMLTableColElement',
  72     'HTMLTableElement',
  73     'HTMLTableSectionElement',
  74     'HTMLTableCellElement',
  75     'HTMLTableRowElement',
  76     'HTMLTextAreaElement',
  77     'HTMLTitleElement',
  78     'HTMLUListElement',
  79     'HTMLElement',
  80     'CanvasRenderingContext2D',
  81     'CSSFontFaceRule',
  82     'CSSImportRule',
  83     'CSSMediaRule',
  84     'CSSPageRule',
  85     'CSSRule',
  86     'CSSRuleList',
  87     'CSSStyleDeclaration',
  88     'CSSStyleRule',
  89     'CSSStyleSheet',
  90     'DOMImplementation',
  91     'DataTransfer',
  92     'HTMLCollection',
  93     'MediaList',
  94     'MimeType',
  95     'MimeTypeArray',
  96     'MutationEvent',
  97     'NamedNodeMap',
  98     'NodeFilter',
  99     'NodeList',
 100     'Plugin',
 101     'PluginArray',
 102     'StyleSheet',
 103     'StyleSheetList',
 104     'TextEvent',
 105     'XPathResult',
 106     'BarInfo',
 107     'CanvasGradient',
 108     'CanvasPattern',
 109     'Console',
 110     'Selection',
 111     'Window',
 112     'History',
 113     'HTMLOptionsCollection',
 114     'Location',
 115     'Navigator',
 116     'NodeIterator',
 117     'Screen',
 118     'TreeWalker',
 119     'XPathExpression',
 120     'Worker'
 121 ];
 122
 123 // These objects should have a working constructor.
 124 var objects_constructor = [
 125     'Comment',
 126     'DOMParser',
 127     'DocumentFragment',
 128     'Range',
 129     'Text',
 130     'XMLHttpRequest',
 131     'XMLSerializer',
 132     'XPathEvaluator',
 133     'XSLTProcessor'
 134 ];
 135
 136 // These objects should have no constructor.
 137 var objects_no_constructor = [
 138     'EventTargetNode',
 139     'UndetectableHTMLCollection',
 140     'XPathNSResolver',
 141     'EventListener',
 142     'NPObject'
 143 ];
 144
 145 // These objects should have a working constructor, but their constructed
 146 // object names differ. This is therefore a map from constructor name to
 147 // constructed object.
 148 var objects_different_constructor = {
 149     'Audio': 'HTMLAudioElement',
 150     'Option': 'HTMLOptionElement',
 151     'Image': 'HTMLImageElement'
 152 }
 153
 154 function TryAllocate(node) {
 155     var Cons = this[node];
 156     if (!Cons) return 'no constructor';
 157     try { return Object.prototype.toString.call(new Cons()); }
 158     catch (e) { return 'exception'; }
 159 }
 160
 161 function check(name, expected) {
 162     actual = TryAllocate(node);
 163     if (actual == expected) {
 164       document.write("PASS: " + name + " '" + expected + "'<br>");
 165     } else {
 166       document.write("FAIL: " + name + " wanted '" + expected + "', got '" +
 167           actual + "'<br>");
 168     }
 169 }
 170
 171 for (var i = 0; i < objects_exception.length; i++) {
 172     var obj = objects_exception[i];
 173     shouldBe("TryAllocate('" + obj + "')", "'exception'");
 174 }
 175
 176 for (var i = 0; i < objects_no_constructor.length; i++) {
 177     var obj = objects_no_constructor[i];
 178     shouldBe("TryAllocate('" + obj + "')", "'no constructor'");
 179 }
 180
 181 for (var i = 0; i < objects_constructor.length; i++) {
 182     var obj = objects_constructor[i];
 183     shouldBe("TryAllocate('" + obj + "')", "'[object " + obj + "]'");
 184     element.id = obj;
 185     shouldBe("TryAllocate('" + obj + "')", "'[object " + obj + "]'");
 186     element.id = "element";
 187     element.name = obj;
 188     shouldBe("TryAllocate('" + obj + "')", "'[object " + obj + "]'");
 189     element.name = "element_name";
 190 }
 191
 192 for (var obj in objects_different_constructor) {
 193     shouldBe("TryAllocate('" + obj + "')",
 194              "'[object " + objects_different_constructor[obj] + "]'");
 195     element.id = obj;
 196     shouldBe("TryAllocate('" + obj + "')",
 197              "'[object " + objects_different_constructor[obj] + "]'");
 198     element.id = "element";
 199     element.name = obj;
 200     shouldBe("TryAllocate('" + obj + "')",
 201              "'[object " + objects_different_constructor[obj] + "]'");
 202     element.name = "element_name";
 203 }
 204 </script>
 205 </body>
 206 </html>