15.2.3.6-4-546.js (1051B)
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: 15.2.3.6-4-546 6 description: > 7 ES5 Attributes - fail to update [[Configurable]] attribute of 8 accessor property ([[Get]] is a Function, [[Set]] is a Function, 9 [[Enumerable]] is true, [[Configurable]] is false) to different 10 value 11 includes: [propertyHelper.js] 12 ---*/ 13 14 var obj = {}; 15 16 var getFunc = function() { 17 return 1001; 18 }; 19 20 var verifySetFunc = "data"; 21 var setFunc = function(value) { 22 verifySetFunc = value; 23 }; 24 25 Object.defineProperty(obj, "prop", { 26 get: getFunc, 27 set: setFunc, 28 enumerable: true, 29 configurable: false 30 }); 31 var desc1 = Object.getOwnPropertyDescriptor(obj, "prop"); 32 assert.sameValue(desc1.configurable, false); 33 34 try { 35 Object.defineProperty(obj, "prop", { 36 configurable: true 37 }); 38 39 throw new Test262Error("Expected TypeError"); 40 } catch (e) { 41 assert(e instanceof TypeError); 42 } 43 44 verifyProperty(obj, "prop", { 45 configurable: false, 46 }); 47 48 reportCompare(0, 0);