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comparison: js/src/tests/ecma_5/Function/function-caller.js
js/src/tests/ecma_5/Function/function-caller.js
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| -1:000000000000 | 0:2063478912d7 |
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| 1 /* | |
| 2 * Any copyright is dedicated to the Public Domain. | |
| 3 * http://creativecommons.org/licenses/publicdomain/ | |
| 4 */ | |
| 5 | |
| 6 var gTestfile = 'function-caller.js'; | |
| 7 var BUGNUMBER = 514581; | |
| 8 var summary = "Function.prototype.caller should throw a TypeError for " + | |
| 9 "strict-mode functions"; | |
| 10 | |
| 11 print(BUGNUMBER + ": " + summary); | |
| 12 | |
| 13 /************** | |
| 14 * BEGIN TEST * | |
| 15 **************/ | |
| 16 | |
| 17 // behavior | |
| 18 | |
| 19 function expectTypeError(fun) | |
| 20 { | |
| 21 try | |
| 22 { | |
| 23 fun(); | |
| 24 throw new Error("didn't throw"); | |
| 25 } | |
| 26 catch (e) | |
| 27 { | |
| 28 assertEq(e instanceof TypeError, true, | |
| 29 "expected TypeError calling function" + | |
| 30 ("name" in fun ? " " + fun.name : "") + ", instead got: " + e); | |
| 31 } | |
| 32 } | |
| 33 | |
| 34 function bar() { "use strict"; } | |
| 35 expectTypeError(function barCaller() { bar.caller; }); | |
| 36 | |
| 37 function baz() { "use strict"; return 17; } | |
| 38 expectTypeError(function bazCaller() { baz.caller; }); | |
| 39 | |
| 40 | |
| 41 // accessor identity | |
| 42 | |
| 43 function strictMode() { "use strict"; return 42; } | |
| 44 var canonicalTTE = Object.getOwnPropertyDescriptor(strictMode, "caller").get; | |
| 45 | |
| 46 var barCaller = Object.getOwnPropertyDescriptor(bar, "caller"); | |
| 47 assertEq("get" in barCaller, true); | |
| 48 assertEq("set" in barCaller, true); | |
| 49 assertEq(barCaller.get, canonicalTTE); | |
| 50 assertEq(barCaller.set, canonicalTTE); | |
| 51 | |
| 52 var barArguments = Object.getOwnPropertyDescriptor(bar, "arguments"); | |
| 53 assertEq("get" in barArguments, true); | |
| 54 assertEq("set" in barArguments, true); | |
| 55 assertEq(barArguments.get, canonicalTTE); | |
| 56 assertEq(barArguments.set, canonicalTTE); | |
| 57 | |
| 58 var bazCaller = Object.getOwnPropertyDescriptor(baz, "caller"); | |
| 59 assertEq("get" in bazCaller, true); | |
| 60 assertEq("set" in bazCaller, true); | |
| 61 assertEq(bazCaller.get, canonicalTTE); | |
| 62 assertEq(bazCaller.set, canonicalTTE); | |
| 63 | |
| 64 var bazArguments = Object.getOwnPropertyDescriptor(baz, "arguments"); | |
| 65 assertEq("get" in bazArguments, true); | |
| 66 assertEq("set" in bazArguments, true); | |
| 67 assertEq(bazArguments.get, canonicalTTE); | |
| 68 assertEq(bazArguments.set, canonicalTTE); | |
| 69 | |
| 70 | |
| 71 // [[ThrowTypeError]] characteristics | |
| 72 | |
| 73 assertEq(Object.prototype.toString.call(canonicalTTE), "[object Function]"); | |
| 74 assertEq(Object.getPrototypeOf(canonicalTTE), Function.prototype); | |
| 75 assertEq(canonicalTTE.length, 0); | |
| 76 assertEq(Object.isExtensible(canonicalTTE), false); | |
| 77 canonicalTTE.lumpy = 17; | |
| 78 assertEq(canonicalTTE.hasOwnProperty("lumpy"), false); | |
| 79 assertEq("lumpy" in canonicalTTE, false); | |
| 80 expectTypeError(function setTTEProp() { "use strict"; canonicalTTE.x = 42; }); | |
| 81 | |
| 82 /******************************************************************************/ | |
| 83 | |
| 84 if (typeof reportCompare === "function") | |
| 85 reportCompare(true, true); | |
| 86 | |
| 87 print("All tests passed!"); |
