15.2.3.6-4-454.js (994B)
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: 15.2.3.6-4-454 6 description: > 7 ES5 Attributes - fail to update [[Set]] attribute of accessor 8 property ([[Get]] is undefined, [[Set]] is undefined, 9 [[Enumerable]] is false, [[Configurable]] is false) to different 10 value 11 ---*/ 12 13 var obj = {}; 14 15 var verifySetFunc = "data"; 16 var setFunc = function(value) { 17 verifySetFunc = value; 18 }; 19 20 Object.defineProperty(obj, "prop", { 21 get: undefined, 22 set: undefined, 23 enumerable: false, 24 configurable: false 25 }); 26 27 var desc1 = Object.getOwnPropertyDescriptor(obj, "prop"); 28 assert.throws(TypeError, function() { 29 Object.defineProperty(obj, "prop", { 30 set: setFunc 31 }); 32 }); 33 var desc2 = Object.getOwnPropertyDescriptor(obj, "prop"); 34 assert.sameValue(typeof desc1.set, "undefined", 'typeof desc1.set'); 35 assert.sameValue(typeof desc2.set, "undefined", 'typeof desc2.set'); 36 37 reportCompare(0, 0);