diff options
Diffstat (limited to 'js/src/tests/ecma_5/misc/builtin-methods-reject-null-undefined-this.js')
| -rw-r--r-- | js/src/tests/ecma_5/misc/builtin-methods-reject-null-undefined-this.js | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/js/src/tests/ecma_5/misc/builtin-methods-reject-null-undefined-this.js b/js/src/tests/ecma_5/misc/builtin-methods-reject-null-undefined-this.js new file mode 100644 index 000000000..a2275c1b8 --- /dev/null +++ b/js/src/tests/ecma_5/misc/builtin-methods-reject-null-undefined-this.js @@ -0,0 +1,153 @@ +/* + * Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/licenses/publicdomain/ + */ + +//----------------------------------------------------------------------------- +var BUGNUMBER = 619283; +var summary = + "ECMAScript built-in methods that immediately throw when |this| is " + + "|undefined| or |null| (due to CheckObjectCoercible, ToObject, or ToString)"; + +print(BUGNUMBER + ": " + summary); + +/************** + * BEGIN TEST * + **************/ + +// We can't just exhaustively loop over everything because 1) method properties +// might be extensions with special |this| handling, and 2) some methods don't +// *quite* immediately throw a TypeError, first thing, if |this| is |undefined| +// or |null|, or their algorithms are very slightly ambiguous about whether they +// do. Why? Ipse-dixitism. *shrug* + +var ClassToMethodMap = + { + Object: [/* "toString" has special |this| handling */ + "toLocaleString", "valueOf", "hasOwnProperty", + /* + * "isPrototypeOf" has special |this| handling already tested in + * ecma_5/Object/isPrototypeOf.js. + */ + /* + * "isPrototypeOf" has special |this| handling already tested in + * ecma_5/Object/propertyIsEnumerable.js. + */], + // Function methods often don't ToObject(this) as their very first step, + // and they're already stepwise well-tested such that manual tests here + // would be redundant. + Array: ["toString", "toLocaleString", "concat", "join", "pop", "push", + "reverse", "shift", "slice", "sort", "splice", "unshift", + "indexOf", "lastIndexOf", "every", "some", "forEach", "map", + "filter", "reduce", "reduceRight"], + String: ["toString", "valueOf", "charAt", "charCodeAt", "concat", + "indexOf", "lastIndexOf", "localeCompare", "match", "replace", + "search", "slice", "split", "substring", "toLowerCase", + "toLocaleLowerCase", "toUpperCase", "toLocaleUpperCase", "trim", + /* + * "trimLeft" and "trimRight" are non-standard and thus are tested + * in ecma_5/extensions/trim-extensions.js. + */ + ], + Boolean: ["toString", "valueOf"], + Number: ["toString", "toLocaleString", "valueOf", + /* + * toFixed doesn't *immediately* test |this| for number or + * Number-ness, but because the ToInteger(void 0) which arguably + * precedes it in the toFixed algorithm won't throw in this test, + * we don't need to specially test it. + */ + "toFixed", + "toExponential", "toPrecision"], + Date: ["toDateString", "toTimeString", "toLocaleString", + "toLocaleDateString", "toLocaleTimeString", "valueOf", "getTime", + "getFullYear", "getUTCFullYear", "getMonth", "getUTCMonth", + "getDate", "getUTCDate", "getDay", "getUTCDay", "getHours", + "getUTCHours", "getMinutes", "getUTCMinutes", "getSeconds", + "getUTCSeconds", "getMilliseconds", "getUTCMilliseconds", + /* + * toFixed doesn't *immediately* test |this| for number or + * Number-ness, but because the TimeClip(ToNumber(void 0)) which + * arguably precedes it in the setTime algorithm won't throw in + * this test, we don't need to specially test it. + */ + "setTime", + "getTimezoneOffset", "setMilliseconds", "setUTCMilliseconds", + "setSeconds", "setUTCSeconds", "setMinutes", "setUTCMinutes", + "setHours", "setUTCHours", "setDate", "setUTCDate", "setMonth", + "setUTCMonth", "setFullYear", "setUTCFullYear", "toUTCString", + "toISOString", "toJSON"], + RegExp: ["exec", "test", "toString"], + Error: ["toString"], + }; + +var badThisValues = [null, undefined]; + +function testMethod(Class, className, method) +{ + var expr; + + // Try out explicit this values + for (var i = 0, sz = badThisValues.length; i < sz; i++) + { + var badThis = badThisValues[i]; + + expr = className + ".prototype." + method + ".call(" + badThis + ")"; + try + { + Class.prototype[method].call(badThis); + throw new Error(expr + " didn't throw a TypeError"); + } + catch (e) + { + assertEq(e instanceof TypeError, true, + "wrong error for " + expr + ", instead threw " + e); + } + + expr = className + ".prototype." + method + ".apply(" + badThis + ")"; + try + { + Class.prototype[method].apply(badThis); + throw new Error(expr + " didn't throw a TypeError"); + } + catch (e) + { + assertEq(e instanceof TypeError, true, + "wrong error for " + expr + ", instead threw " + e); + } + } + + // ..and for good measure.. + + expr = "(0, " + className + ".prototype." + method + ")()" + try + { + // comma operator to call GetValue() on the method and de-Reference it + (0, Class.prototype[method])(); + throw new Error(expr + " didn't throw a TypeError"); + } + catch (e) + { + assertEq(e instanceof TypeError, true, + "wrong error for " + expr + ", instead threw " + e); + } +} + +for (var className in ClassToMethodMap) +{ + var Class = this[className]; + + var methodNames = ClassToMethodMap[className]; + for (var i = 0, sz = methodNames.length; i < sz; i++) + { + var method = methodNames[i]; + testMethod(Class, className, method); + } +} + +/******************************************************************************/ + +if (typeof reportCompare === "function") + reportCompare(true, true); + +print("All tests passed!"); |