// Copyright (c) 2012 Ecma International. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es5id: 15.2.3.6-4-378 description: > ES5 Attributes - fail to update [[Writable]] attribute of data property ([[Writable]] is false, [[Enumerable]] is false, [[Configurable]] is false) to different value ---*/ var obj = {}; Object.defineProperty(obj, "prop", { value: 2010, writable: false, enumerable: false, configurable: false }); var propertyDefineCorrect = obj.hasOwnProperty("prop"); var desc1 = Object.getOwnPropertyDescriptor(obj, "prop"); assert.throws(TypeError, function() { Object.defineProperty(obj, "prop", { writable: true }); }); var desc2 = Object.getOwnPropertyDescriptor(obj, "prop"); assert(propertyDefineCorrect, 'propertyDefineCorrect !== true'); assert.sameValue(desc1.writable, false, 'desc1.writable'); assert.sameValue(obj.prop, 2010, 'obj.prop'); assert.sameValue(desc2.writable, false, 'desc2.writable'); reportCompare(0, 0);