test/built-ins/Object/defineProperty/15.2.3.6-4-408.js


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// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.2.3.6-4-408
description: >
    ES5 Attributes - Successfully add a property to an object when the
    object's prototype has a property with same name and [[Writable]]
    attribute is set to true (Date instance)
---*/

            Object.defineProperty(Date.prototype, "prop", {
                value: 1001,
                writable: true,
                enumerable: true,
                configurable: true
            });
            var dateObj = new Date();
            dateObj.prop = 1002;

assert(dateObj.hasOwnProperty("prop"), 'dateObj.hasOwnProperty("prop") !== true');
assert.sameValue(dateObj.prop, 1002, 'dateObj.prop');