15.2.3.6-3-78.js (945B)
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: 15.2.3.6-3-78 6 description: > 7 Object.defineProperty - 'configurable' property in 'Attributes' is 8 own data property that overrides an inherited accessor property 9 (8.10.5 step 4.a) 10 ---*/ 11 12 var obj = {}; 13 14 var proto = {}; 15 16 Object.defineProperty(proto, "configurable", { 17 get: function() { 18 return false; 19 } 20 }); 21 22 var ConstructFun = function() {}; 23 ConstructFun.prototype = proto; 24 25 var child = new ConstructFun(); 26 Object.defineProperty(child, "configurable", { 27 value: true 28 }); 29 30 Object.defineProperty(obj, "property", child); 31 32 var beforeDeleted = obj.hasOwnProperty("property"); 33 34 delete obj.property; 35 36 var afterDeleted = obj.hasOwnProperty("property"); 37 38 assert.sameValue(beforeDeleted, true, 'beforeDeleted'); 39 assert.sameValue(afterDeleted, false, 'afterDeleted'); 40 41 reportCompare(0, 0);