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comparison: js/src/tests/ecma_5/Object/extensibility-01.js
js/src/tests/ecma_5/Object/extensibility-01.js
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| -1:000000000000 | 0:8717d5ee5ab5 |
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| 1 /* | |
| 2 * Any copyright is dedicated to the Public Domain. | |
| 3 * http://creativecommons.org/licenses/publicdomain/ | |
| 4 * Contributor: | |
| 5 * Jeff Walden <jwalden+code@mit.edu> | |
| 6 */ | |
| 7 | |
| 8 var gTestfile = '15.2.3.10-01.js'; | |
| 9 //----------------------------------------------------------------------------- | |
| 10 var BUGNUMBER = 492849; | |
| 11 var summary = 'ES5: Implement Object.preventExtensions, Object.isExtensible'; | |
| 12 | |
| 13 print(BUGNUMBER + ": " + summary); | |
| 14 | |
| 15 /************** | |
| 16 * BEGIN TEST * | |
| 17 **************/ | |
| 18 | |
| 19 function trySetProperty(o, p, v, strict) | |
| 20 { | |
| 21 function strictSetProperty() | |
| 22 { | |
| 23 "use strict"; | |
| 24 o[p] = v; | |
| 25 } | |
| 26 | |
| 27 function setProperty() | |
| 28 { | |
| 29 o[p] = v; | |
| 30 } | |
| 31 | |
| 32 assertEq(Object.prototype.hasOwnProperty.call(o, p), false); | |
| 33 | |
| 34 try | |
| 35 { | |
| 36 if (strict) | |
| 37 strictSetProperty(); | |
| 38 else | |
| 39 setProperty(); | |
| 40 if (o[p] === v) | |
| 41 return "set"; | |
| 42 if (p in o) | |
| 43 return "set-converted"; | |
| 44 return "swallowed"; | |
| 45 } | |
| 46 catch (e) | |
| 47 { | |
| 48 return "throw"; | |
| 49 } | |
| 50 } | |
| 51 | |
| 52 function tryDefineProperty(o, p, v) | |
| 53 { | |
| 54 assertEq(Object.prototype.hasOwnProperty.call(o, p), false); | |
| 55 | |
| 56 try | |
| 57 { | |
| 58 Object.defineProperty(o, p, { value: v }); | |
| 59 if (o[p] === v) | |
| 60 return "set"; | |
| 61 if (p in o) | |
| 62 return "set-converted"; | |
| 63 return "swallowed"; | |
| 64 } | |
| 65 catch (e) | |
| 66 { | |
| 67 return "throw"; | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 assertEq(typeof Object.preventExtensions, "function"); | |
| 72 assertEq(Object.preventExtensions.length, 1); | |
| 73 | |
| 74 var slowArray = [1, 2, 3]; | |
| 75 slowArray.slow = 5; | |
| 76 var objs = | |
| 77 [{}, { 1: 2 }, { a: 3 }, [], [1], [, 1], slowArray, function a(){}, /a/]; | |
| 78 | |
| 79 for (var i = 0, sz = objs.length; i < sz; i++) | |
| 80 { | |
| 81 var o = objs[i]; | |
| 82 assertEq(Object.isExtensible(o), true, "object " + i + " not extensible?"); | |
| 83 | |
| 84 var o2 = Object.preventExtensions(o); | |
| 85 assertEq(o, o2); | |
| 86 | |
| 87 assertEq(Object.isExtensible(o), false, "object " + i + " is extensible?"); | |
| 88 | |
| 89 assertEq(trySetProperty(o, "baz", 17, true), "throw", | |
| 90 "unexpected behavior for strict-mode property-addition to " + | |
| 91 "object " + i); | |
| 92 assertEq(trySetProperty(o, "baz", 17, false), "swallowed", | |
| 93 "unexpected behavior for property-addition to object " + i); | |
| 94 | |
| 95 assertEq(tryDefineProperty(o, "baz", 17), "throw", | |
| 96 "unexpected behavior for new property definition on object " + i); | |
| 97 } | |
| 98 | |
| 99 /******************************************************************************/ | |
| 100 | |
| 101 reportCompare(true, true); | |
| 102 | |
| 103 print("All tests passed!"); |
