15.2.3.6-4-489.js (1208B)
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: 15.2.3.6-4-489 6 description: > 7 ES5 Attributes - fail to update [[Get]] attribute of accessor 8 property ([[Get]] is undefined, [[Set]] is a Function, 9 [[Enumerable]] is false, [[Configurable]] is false) to different 10 value 11 ---*/ 12 13 var obj = {}; 14 15 var getFunc = function() { 16 return 1001; 17 }; 18 19 var verifySetFunc = "data"; 20 var setFunc = function(value) { 21 verifySetFunc = value; 22 }; 23 24 Object.defineProperty(obj, "prop", { 25 get: undefined, 26 set: setFunc, 27 enumerable: false, 28 configurable: false 29 }); 30 31 var result1 = typeof obj.prop === "undefined"; 32 var desc1 = Object.getOwnPropertyDescriptor(obj, "prop"); 33 assert.throws(TypeError, function() { 34 Object.defineProperty(obj, "prop", { 35 get: getFunc 36 }); 37 }); 38 var result2 = typeof obj.prop === "undefined"; 39 var desc2 = Object.getOwnPropertyDescriptor(obj, "prop"); 40 41 assert(result1, 'result1 !== true'); 42 assert(result2, 'result2 !== true'); 43 assert.sameValue(typeof desc1.get, "undefined", 'typeof desc1.get'); 44 assert.sameValue(typeof desc2.get, "undefined", 'typeof desc2.get'); 45 46 reportCompare(0, 0);