| // Copyright (c) 2012 Ecma International. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| es5id: 15.2.3.10-3-24 |
| description: > |
| Object.preventExtensions - [[Extensible]]: false on a prototype |
| doesn't prevent adding properties to an instance that inherits |
| from that prototype |
| ---*/ |
| |
| var proto = {}; |
| var preCheck = Object.isExtensible(proto); |
| Object.preventExtensions(proto); |
| |
| var ConstructFun = function() {}; |
| ConstructFun.prototype = proto; |
| var child = new ConstructFun(); |
| |
| child.prop = 10; |
| |
| assert(preCheck, 'preCheck !== true'); |
| assert(child.hasOwnProperty("prop"), 'child.hasOwnProperty("prop") !== true'); |