15.2.3.6-4-455.js (1178B)
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: 15.2.3.6-4-455 6 description: > 7 ES5 Attributes - fail to update [[Enumerable]] attribute of 8 accessor 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 Object.defineProperty(obj, "prop", { 16 get: undefined, 17 set: undefined, 18 enumerable: false, 19 configurable: false 20 }); 21 var result1 = false; 22 var desc1 = Object.getOwnPropertyDescriptor(obj, "prop"); 23 for (var p1 in obj) { 24 if (p1 === "prop") { 25 result1 = true; 26 } 27 } 28 assert.throws(TypeError, function() { 29 Object.defineProperty(obj, "prop", { 30 enumerable: true 31 }); 32 }); 33 var result2 = false; 34 var desc2 = Object.getOwnPropertyDescriptor(obj, "prop"); 35 for (var p2 in obj) { 36 if (p2 === "prop") { 37 result2 = true; 38 } 39 } 40 41 assert.sameValue(result1, false, 'result1'); 42 assert.sameValue(result2, false, 'result2'); 43 assert.sameValue(desc1.enumerable, false, 'desc1.enumerable'); 44 assert.sameValue(desc2.enumerable, false, 'desc2.enumerable'); 45 46 reportCompare(0, 0);