JSTests/test262/test/built-ins/Object/isFrozen/15.2.3.12-2-1.js

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

/*---
es5id: 15.2.3.12-2-1
description: >
    Object.isFrozen - inherited data property is not considered into
    the for each loop
---*/

        var proto = {};
        Object.defineProperty(proto, "Father", {
            value: 10,
            writable: false,
            configurable: true
        });

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

        var child = new Con();

        Object.preventExtensions(child);

assert(Object.isFrozen(child), 'Object.isFrozen(child) !== true');