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comparison: js/src/tests/ecma_5/misc/builtin-methods-reject-null-undefined-this.js
js/src/tests/ecma_5/misc/builtin-methods-reject-null-undefined-this.js
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| -1:000000000000 | 0:984f4c654e4b |
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| 1 /* | |
| 2 * Any copyright is dedicated to the Public Domain. | |
| 3 * http://creativecommons.org/licenses/publicdomain/ | |
| 4 */ | |
| 5 | |
| 6 //----------------------------------------------------------------------------- | |
| 7 var BUGNUMBER = 619283; | |
| 8 var summary = | |
| 9 "ECMAScript built-in methods that immediately throw when |this| is " + | |
| 10 "|undefined| or |null| (due to CheckObjectCoercible, ToObject, or ToString)"; | |
| 11 | |
| 12 print(BUGNUMBER + ": " + summary); | |
| 13 | |
| 14 /************** | |
| 15 * BEGIN TEST * | |
| 16 **************/ | |
| 17 | |
| 18 // We can't just exhaustively loop over everything because 1) method properties | |
| 19 // might be extensions with special |this| handling, and 2) some methods don't | |
| 20 // *quite* immediately throw a TypeError, first thing, if |this| is |undefined| | |
| 21 // or |null|, or their algorithms are very slightly ambiguous about whether they | |
| 22 // do. Why? Ipse-dixitism. *shrug* | |
| 23 | |
| 24 var ClassToMethodMap = | |
| 25 { | |
| 26 Object: [/* "toString" has special |this| handling */ | |
| 27 "toLocaleString", "valueOf", "hasOwnProperty", | |
| 28 /* | |
| 29 * "isPrototypeOf" has special |this| handling already tested in | |
| 30 * ecma_5/Object/isPrototypeOf.js. | |
| 31 */ | |
| 32 /* | |
| 33 * "isPrototypeOf" has special |this| handling already tested in | |
| 34 * ecma_5/Object/propertyIsEnumerable.js. | |
| 35 */], | |
| 36 // Function methods often don't ToObject(this) as their very first step, | |
| 37 // and they're already stepwise well-tested such that manual tests here | |
| 38 // would be redundant. | |
| 39 Array: ["toString", "toLocaleString", "concat", "join", "pop", "push", | |
| 40 "reverse", "shift", "slice", "sort", "splice", "unshift", | |
| 41 "indexOf", "lastIndexOf", "every", "some", "forEach", "map", | |
| 42 "filter", "reduce", "reduceRight"], | |
| 43 String: ["toString", "valueOf", "charAt", "charCodeAt", "concat", | |
| 44 "indexOf", "lastIndexOf", "localeCompare", "match", "replace", | |
| 45 "search", "slice", "split", "substring", "toLowerCase", | |
| 46 "toLocaleLowerCase", "toUpperCase", "toLocaleUpperCase", "trim", | |
| 47 /* | |
| 48 * "trimLeft" and "trimRight" are non-standard and thus are tested | |
| 49 * in ecma_5/extensions/trim-extensions.js. | |
| 50 */ | |
| 51 ], | |
| 52 Boolean: ["toString", "valueOf"], | |
| 53 Number: ["toString", "toLocaleString", "valueOf", | |
| 54 /* | |
| 55 * toFixed doesn't *immediately* test |this| for number or | |
| 56 * Number-ness, but because the ToInteger(void 0) which arguably | |
| 57 * precedes it in the toFixed algorithm won't throw in this test, | |
| 58 * we don't need to specially test it. | |
| 59 */ | |
| 60 "toFixed", | |
| 61 "toExponential", "toPrecision"], | |
| 62 Date: ["toString", "toDateString", "toTimeString", "toLocaleString", | |
| 63 "toLocaleDateString", "toLocaleTimeString", "valueOf", "getTime", | |
| 64 "getFullYear", "getUTCFullYear", "getMonth", "getUTCMonth", | |
| 65 "getDate", "getUTCDate", "getDay", "getUTCDay", "getHours", | |
| 66 "getUTCHours", "getMinutes", "getUTCMinutes", "getSeconds", | |
| 67 "getUTCSeconds", "getMilliseconds", "getUTCMilliseconds", | |
| 68 /* | |
| 69 * toFixed doesn't *immediately* test |this| for number or | |
| 70 * Number-ness, but because the TimeClip(ToNumber(void 0)) which | |
| 71 * arguably precedes it in the setTime algorithm won't throw in | |
| 72 * this test, we don't need to specially test it. | |
| 73 */ | |
| 74 "setTime", | |
| 75 "getTimezoneOffset", "setMilliseconds", "setUTCMilliseconds", | |
| 76 "setSeconds", "setUTCSeconds", "setMinutes", "setUTCMinutes", | |
| 77 "setHours", "setUTCHours", "setDate", "setUTCDate", "setMonth", | |
| 78 "setUTCMonth", "setFullYear", "setUTCFullYear", "toUTCString", | |
| 79 "toISOString", "toJSON"], | |
| 80 RegExp: ["exec", "test", "toString"], | |
| 81 Error: ["toString"], | |
| 82 }; | |
| 83 | |
| 84 var badThisValues = [null, undefined]; | |
| 85 | |
| 86 function testMethod(Class, className, method) | |
| 87 { | |
| 88 var expr; | |
| 89 | |
| 90 // Try out explicit this values | |
| 91 for (var i = 0, sz = badThisValues.length; i < sz; i++) | |
| 92 { | |
| 93 var badThis = badThisValues[i]; | |
| 94 | |
| 95 expr = className + ".prototype." + method + ".call(" + badThis + ")"; | |
| 96 try | |
| 97 { | |
| 98 Class.prototype[method].call(badThis); | |
| 99 throw new Error(expr + " didn't throw a TypeError"); | |
| 100 } | |
| 101 catch (e) | |
| 102 { | |
| 103 assertEq(e instanceof TypeError, true, | |
| 104 "wrong error for " + expr + ", instead threw " + e); | |
| 105 } | |
| 106 | |
| 107 expr = className + ".prototype." + method + ".apply(" + badThis + ")"; | |
| 108 try | |
| 109 { | |
| 110 Class.prototype[method].apply(badThis); | |
| 111 throw new Error(expr + " didn't throw a TypeError"); | |
| 112 } | |
| 113 catch (e) | |
| 114 { | |
| 115 assertEq(e instanceof TypeError, true, | |
| 116 "wrong error for " + expr + ", instead threw " + e); | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 // ..and for good measure.. | |
| 121 | |
| 122 expr = "(0, " + className + ".prototype." + method + ")()" | |
| 123 try | |
| 124 { | |
| 125 // comma operator to call GetValue() on the method and de-Reference it | |
| 126 (0, Class.prototype[method])(); | |
| 127 throw new Error(expr + " didn't throw a TypeError"); | |
| 128 } | |
| 129 catch (e) | |
| 130 { | |
| 131 assertEq(e instanceof TypeError, true, | |
| 132 "wrong error for " + expr + ", instead threw " + e); | |
| 133 } | |
| 134 } | |
| 135 | |
| 136 for (var className in ClassToMethodMap) | |
| 137 { | |
| 138 var Class = this[className]; | |
| 139 | |
| 140 var methodNames = ClassToMethodMap[className]; | |
| 141 for (var i = 0, sz = methodNames.length; i < sz; i++) | |
| 142 { | |
| 143 var method = methodNames[i]; | |
| 144 testMethod(Class, className, method); | |
| 145 } | |
| 146 } | |
| 147 | |
| 148 /******************************************************************************/ | |
| 149 | |
| 150 if (typeof reportCompare === "function") | |
| 151 reportCompare(true, true); | |
| 152 | |
| 153 print("All tests passed!"); |
