15.2.3.6-4-4.js (1022B)
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 info: | 6 Step 4 of defineProperty calls the [[DefineOwnProperty]] internal method 7 of O to define the property. For newly defined properties, step 4.a.1 of 8 [[DefineOwnProperty]] creates a data property if handed a generic desc. 9 es5id: 15.2.3.6-4-4 10 description: > 11 Object.defineProperty defines a data property if given a generic 12 desc(8.12.9 step 4.a.i) 13 ---*/ 14 15 var o = {}; 16 17 var desc = {}; 18 Object.defineProperty(o, "foo", desc); 19 20 var propDesc = Object.getOwnPropertyDescriptor(o, "foo"); 21 22 assert.sameValue(propDesc.value, undefined, 'propDesc.value'); // undefined by default 23 assert.sameValue(propDesc.writable, false, 'propDesc.writable'); // false by default 24 assert.sameValue(propDesc.enumerable, false, 'propDesc.enumerable'); // false by default 25 assert.sameValue(propDesc.configurable, false, 'propDesc.configurable'); // false by default 26 27 reportCompare(0, 0);