15.2.3.6-3-77.js (832B)
1 // Copyright (c) 2012 Ecma International. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 es5id: 15.2.3.6-3-77 6 description: > 7 Object.defineProperty - 'configurable' property in 'Attributes' is 8 own data property that overrides an inherited data property 9 (8.10.5 step 4.a) 10 ---*/ 11 12 var obj = {}; 13 14 var proto = { 15 configurable: false 16 }; 17 18 var ConstructFun = function() {}; 19 ConstructFun.prototype = proto; 20 21 var child = new ConstructFun(); 22 child.configurable = true; 23 24 Object.defineProperty(obj, "property", child); 25 26 var beforeDeleted = obj.hasOwnProperty("property"); 27 28 delete obj.property; 29 30 var afterDeleted = obj.hasOwnProperty("property"); 31 32 assert.sameValue(beforeDeleted, true, 'beforeDeleted'); 33 assert.sameValue(afterDeleted, false, 'afterDeleted'); 34 35 reportCompare(0, 0);