JSTests/test262/test/built-ins/Object/defineProperty/15.2.3.6-4-339.js

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

/*---
es5id: 15.2.3.6-4-339
description: >
    ES5 Attributes - fail to update the data property ([[Writable]] is
    true, [[Enumerable]] is true, [[Configurable]] is false) to an
    accessor property
---*/

        var obj = {};

        Object.defineProperty(obj, "prop", {
            value: 2010,
            writable: true,
            enumerable: true,
            configurable: false
        });
        var propertyDefineCorrect = obj.hasOwnProperty("prop");
        var desc1 = Object.getOwnPropertyDescriptor(obj, "prop");

        function getFunc() {
            return 20;
        }
assert.throws(TypeError, function() {
            Object.defineProperty(obj, "prop", {
                get: getFunc
            });
});
            var desc2 = Object.getOwnPropertyDescriptor(obj, "prop");
assert(propertyDefineCorrect, 'propertyDefineCorrect !== true');
assert.sameValue(desc1.value, 2010, 'desc1.value');
assert.sameValue(obj.prop, 2010, 'obj.prop');
assert.sameValue(typeof desc2.get, "undefined", 'typeof desc2.get');