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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 // This regression tests that we are not allowed to overwrite an existing | 28 // This regression tests that we are not allowed to overwrite an existing |
29 // non-configurable getter with a new getter. In addition, we should not | 29 // non-configurable getter with a new getter. In addition, we should not |
30 // be able to change the configurable flag from false to true. | 30 // be able to change the configurable flag from false to true. |
31 | 31 |
32 var a = {}; | 32 var a = {}; |
33 Object.defineProperty(a, 'b', | 33 Object.defineProperty(a, 'b', |
34 { get: function () { return 42; }, configurable: false }); | 34 { get: function () { return 42; }, configurable: false }); |
35 // Do not allow us to redefine b on a. | 35 // Do not allow us to redefine b on a. |
36 a.__defineGetter__('b', function _b(){ return 'foo'; }); | 36 try { |
| 37 a.__defineGetter__('b', function _b(){ return 'foo'; }); |
| 38 } catch (e) {} |
37 assertEquals(42, a.b); | 39 assertEquals(42, a.b); |
38 var desc = Object.getOwnPropertyDescriptor(a, 'b'); | 40 var desc = Object.getOwnPropertyDescriptor(a, 'b'); |
39 assertFalse(desc.configurable); | 41 assertFalse(desc.configurable); |
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