// Copyright (c) 2012 Ecma International.  All rights reserved.
// Ecma International makes this code available under the terms and conditions set
// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
// "Use Terms").   Any redistribution of this code must retain the above
// copyright and this notice and otherwise comply with the Use Terms.

/*---
es5id: 15.2.3.4-4-b-4
description: >
    Object.getOwnPropertyNames - elements of the returned array are
    writable
includes: [runTestCase.js]
---*/

function testcase() {
        var obj = { "a": "a" };

        var result = Object.getOwnPropertyNames(obj);

        try {
            var beforeOverride = (result[0] === "a");
            result[0] = "b";
            var afterOverride = (result[0] === "b");

            return beforeOverride && afterOverride;
        } catch (ex) {
            return false;
        }
    }
runTestCase(testcase);
