test262/test/built-ins/Object/getOwnPropertyNames/15.2.3.4-2-4.js

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

/*---
es5id: 15.2.3.4-2-4
description: >
    Object.getOwnPropertyNames - returned array is the standard
    built-in constructor
---*/

var oldArray = Array;
Array = function() {
  throw new Error("invoke customer defined Array!");
};

var obj = {};

var result = Object.getOwnPropertyNames(obj);

assert.sameValue(Object.prototype.toString.call(result), "[object Array]", 'Object.prototype.toString.call(result)');