15.2.3.6-4-436.js (991B)
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: 15.2.3.6-4-436 6 description: > 7 ES5 Attributes - fail to update [[Set]] attribute of accessor 8 property ([[Get]] is undefined, [[Set]] is undefined, 9 [[Enumerable]] is true, [[Configurable]] is false) to different 10 value 11 ---*/ 12 13 var obj = {}; 14 var verifySetFunc = "data"; 15 var setFunc = function(value) { 16 verifySetFunc = value; 17 }; 18 19 Object.defineProperty(obj, "prop", { 20 get: undefined, 21 set: undefined, 22 enumerable: true, 23 configurable: false 24 }); 25 26 var desc1 = Object.getOwnPropertyDescriptor(obj, "prop"); 27 assert.throws(TypeError, function() { 28 Object.defineProperty(obj, "prop", { 29 set: setFunc 30 }); 31 }); 32 var desc2 = Object.getOwnPropertyDescriptor(obj, "prop"); 33 assert.sameValue(typeof desc1.set, "undefined", 'typeof desc1.set'); 34 assert.sameValue(typeof desc2.set, "undefined", 'typeof desc2.set'); 35 36 reportCompare(0, 0);