LayoutTests/fast/js/webidl-class-strings.html - Issue 1017733003: [DO NOT LAND] Set @@toStringTag for DOM object prototypes

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Issue 1017733003: [DO NOT LAND] Set @@toStringTag for DOM object prototypes (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Test expectations Created 5 years, 6 months ago

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	1 <!DOCTYPE html>

	2 <script src="../../resources/js-test.js"></script>

	3 <script>

	4

	5 description("Verify 'class string' binding for WebIDL");

	6

	7 function verifyClassString(o, s) {

	8 // "Some objects described in this section are defined to have a class

	9 // string, which is the string to include in the string returned from

	10 // Object.prototype.toString. If an object has a class string, then the

	11 // object must, at the time it is created, have a property whose name is

	12 // the @@toStringTag symbol and whose value is the specified string."

	13

	14 // TODO(jsbell): Willful violation. https://www.w3.org/Bugs/Public/show_bug .cgi?id=28244

	15 //shouldBeTrue("Object.prototype.hasOwnProperty.call(" + o + ", Symbol.toStr ingTag)");

	16

	17 // TODO(jsbell): Verify writable/enumerable/configurable once WebIDL specs i t.

	18 shouldBeEqualToString("Object.prototype.toString.call(" + o + ")", "[object " + s + "]");

	19 }

	20

	21 // The class string of a platform object that implements one or more

	22 // interfaces must be the identifier of the primary interface of the

	23 // platform object.

	24 verifyClassString("window", "Window");

	25 // 4.5.4: The class string of an interface prototype object is the

	26 // concatenation of the interface’s identifier and the string "Prototype".

	27 // TODO(jsbell): Willful violation. https://www.w3.org/Bugs/Public/show_bug.cgi ?id=28244

	28 verifyClassString("window.__proto__", "Window");

	29 verifyClassString("Window.prototype", "Window");

	30

	31

	32 // TODO(jsbell): Verify class strings for platform array objects (4.2.26)

	33 // TODO(jsbell): Verify class strings for named properties objects (4.5.5)

	34

	35 // The class string of a default iterator object for a given interface

	36 // is the result of concatenting the identifier of the interface and the

	37 // string " Iterator".

	38 verifyClassString("document.head.classList", "DOMTokenList");

	39 verifyClassString("document.head.classList[Symbol.iterator]()", "DOMTokenList It erator");

	40

	41 // The class string of an iterator prototype object for a given interface

	42 // is the result of concatenting the identifier of the interface and the

	43 // string "Iterator".

	44 verifyClassString("document.head.classList[Symbol.iterator]().__proto__", "DOMTo kenListIterator");

	45

	46 // TODO(jsbell): DOMException

	47 // TODO(jsbell): DOMExceptionPrototype

	48

	49

	50 // And a few more interesting cases...

	51 verifyClassString("document", "HTMLDocument");

	52 verifyClassString("document.__proto__", "HTMLDocument");

	53 verifyClassString("HTMLDocument.prototype", "HTMLDocument");

	54

	55 // TODO(jsbell): Shadow roots

	56

	57 // Constructor

	58 verifyClassString("new Blob", "Blob");

	59 verifyClassString("(new Blob).__proto__", "Blob");

	60 verifyClassString("Blob.prototype", "Blob");

	61

	62 // Factory

	63 verifyClassString("IDBKeyRange.only(0)", "IDBKeyRange");

	64 verifyClassString("IDBKeyRange.only(0).__proto__", "IDBKeyRange");

	65 verifyClassString("IDBKeyRange.prototype", "IDBKeyRange");

	66

	67 // Factory vs. Constructor

	68 verifyClassString("document.createElement('img')", "HTMLImageElement");

	69 verifyClassString("document.createElement('img').__proto__", "HTMLImageElement") ;

	70 verifyClassString("new Image", "HTMLImageElement");

	71 verifyClassString("(new Image).__proto__", "HTMLImageElement");

	72 // Interesting: (new Image).__proto__ !== document.createElement('img').__proto_ _

	73 verifyClassString("HTMLImageElement.prototype", "HTMLImageElement");

	74

	75 verifyClassString("new TransitionEvent('')", "TransitionEvent");

	76 verifyClassString("new WebKitTransitionEvent('')", "TransitionEvent");

	77 verifyClassString("TransitionEvent.prototype", "TransitionEvent");

	78 verifyClassString("WebKitTransitionEvent.prototype", "TransitionEvent");

	79

	80

	81 </script>

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