/*

 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/**

 * JDK-8023368: Instance __proto__ property should exist and be writable.

 *

 * @test

 * @run

 */

// check Object.setPrototypeOf extension rather than using __proto__

// function to force same callsites

function check(obj) {

    print(obj.func());

    print(obj.x);

    print(obj.toString());

}

function Func() {

}

Func.prototype.func = function() {

    return "Func.prototype.func";

}

Func.prototype.x = "hello";

var obj = new Func();

var obj2 = Object.create(obj);

// check direct and indirect __proto__ change

check(obj);

check(obj2);

Object.setPrototypeOf(obj, {

   func: function() {

        return "obj.__proto__.func @ " + __LINE__;

   },

   x: 344

});

check(obj);

check(obj2);

// check indirect (1 and 2 levels) __proto__ function change

Object.setPrototypeOf(Object.getPrototypeOf(obj), {

    toString: function() {

        return "new object.toString";

    }

});

check(obj);

check(obj2);