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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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859 assertFalse(desc.configurable); | 859 assertFalse(desc.configurable); |
860 | 860 |
861 // Define non existing property - all attributes should default to false. | 861 // Define non existing property - all attributes should default to false. |
862 Object.defineProperty(arr, '15', descElement); | 862 Object.defineProperty(arr, '15', descElement); |
863 desc = Object.getOwnPropertyDescriptor(arr, '15'); | 863 desc = Object.getOwnPropertyDescriptor(arr, '15'); |
864 assertEquals(desc.value, 'foobar'); | 864 assertEquals(desc.value, 'foobar'); |
865 assertFalse(desc.writable); | 865 assertFalse(desc.writable); |
866 assertFalse(desc.enumerable); | 866 assertFalse(desc.enumerable); |
867 assertFalse(desc.configurable); | 867 assertFalse(desc.configurable); |
868 | 868 |
| 869 // See issue 968: http://code.google.com/p/v8/issues/detail?id=968 |
| 870 var o = { x : 42 }; |
| 871 Object.defineProperty(o, "x", { writable: false }); |
| 872 assertEquals(42, o.x); |
| 873 o.x = 37; |
| 874 assertEquals(42, o.x); |
869 | 875 |
| 876 o = { x : 42 }; |
| 877 Object.defineProperty(o, "x", {}); |
| 878 assertEquals(42, o.x); |
| 879 o.x = 37; |
| 880 // Writability is preserved. |
| 881 assertEquals(37, o.x); |
| 882 |
| 883 var o = { }; |
| 884 Object.defineProperty(o, "x", { writable: false }); |
| 885 assertEquals(undefined, o.x); |
| 886 o.x = 37; |
| 887 assertEquals(undefined, o.x); |
| 888 |
| 889 o = { get x() { return 87; } }; |
| 890 Object.defineProperty(o, "x", { writable: false }); |
| 891 assertEquals(undefined, o.x); |
| 892 o.x = 37; |
| 893 assertEquals(undefined, o.x); |
| 894 |
| 895 // Ignore inherited properties. |
| 896 o = { __proto__ : { x : 87 } }; |
| 897 Object.defineProperty(o, "x", { writable: false }); |
| 898 assertEquals(undefined, o.x); |
| 899 o.x = 37; |
| 900 assertEquals(undefined, o.x); |
| 901 |
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