| // Copyright (c) 2012 Ecma International. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| es5id: 15.2.3.10-2-1 |
| description: > |
| Object.preventExtensions - repeated calls to preventExtensions |
| have no side effects |
| ---*/ |
| |
| var obj = {}; |
| var testResult1 = true; |
| var testResult2 = true; |
| |
| var preCheck = Object.isExtensible(obj); |
| |
| Object.preventExtensions(obj); |
| testResult1 = Object.isExtensible(obj); |
| Object.preventExtensions(obj); |
| testResult2 = Object.isExtensible(obj); |
| |
| assert(preCheck, 'preCheck !== true'); |
| assert.sameValue(testResult1, false, 'testResult1'); |
| assert.sameValue(testResult2, false, 'testResult2'); |