test262/test/built-ins/Object/getOwnPropertyNames/15.2.3.4-4-b-6.js

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

/*---
es5id: 15.2.3.4-4-b-6
description: >
    Object.getOwnPropertyNames - elements of the returned array are
    configurable
includes: [runTestCase.js]
---*/

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

        var result = Object.getOwnPropertyNames(obj);

        var beforeDeleted = (result.hasOwnProperty("0"));
        delete result[0];
        var afterDeleted = (result.hasOwnProperty("0"));

        return beforeDeleted && !afterDeleted;
    }
runTestCase(testcase);