15.2.3.6-4-525.js (1056B)
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: 15.2.3.6-4-525 6 description: > 7 ES5 Attributes - fail to update [[Get]] attribute of accessor 8 property ([[Get]] is a Function, [[Set]] is undefined, 9 [[Enumerable]] is false, [[Configurable]] is false) to different 10 value 11 ---*/ 12 13 var obj = {}; 14 var getFunc = function() { 15 return 1001; 16 }; 17 18 Object.defineProperty(obj, "prop", { 19 get: getFunc, 20 set: undefined, 21 enumerable: false, 22 configurable: false 23 }); 24 25 var result1 = obj.prop === 1001; 26 var desc1 = Object.getOwnPropertyDescriptor(obj, "prop"); 27 assert.throws(TypeError, function() { 28 Object.defineProperty(obj, "prop", { 29 get: undefined 30 }); 31 }); 32 var result2 = obj.prop === 1001; 33 var desc2 = Object.getOwnPropertyDescriptor(obj, "prop"); 34 35 assert(result1, 'result1 !== true'); 36 assert(result2, 'result2 !== true'); 37 assert.sameValue(desc1.get, getFunc, 'desc1.get'); 38 assert.sameValue(desc2.get, getFunc, 'desc2.get'); 39 40 reportCompare(0, 0);