JSTests/test262/test/built-ins/Object/isExtensible/15.2.3.13-2-25.js

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

/*---
es5id: 15.2.3.13-2-25
description: >
    Object.isExtensible returns true if O is extensible and has a
    prototype that is not extensible
---*/

var proto = {};
Object.preventExtensions(proto);

var ConstructFun = function() {};
ConstructFun.prototype = proto;

var obj = new ConstructFun();

assert(Object.isExtensible(obj), 'Object.isExtensible(obj) !== true');