/*

 * Copyright 1999 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

import java.security.*;

/*

 * @test

 * @bug 4250093

 * @summary AccessControlContext throws NullPointerException

 * if the Combiner is null.

 */

public class NullCombinerEquals {

    public static void main(String[] args) throws Exception {

        NullCombinerEquals nce = new NullCombinerEquals();

        try {

            nce.go();

        } catch (Exception e) {

            throw new Exception("Test Failed: " + e.toString());

        }

    }

    void go() throws Exception {

        AccessControlContext acc = AccessController.getContext();

        // test both combiners are NULL

        acc.equals(acc);

        // test one combiner is NULL

        AccessControlContext acc2 = new AccessControlContext(acc, new DC());

        acc.equals(acc2);

        // test other combiner is NULL

        acc2.equals(acc);

        // test neither combiner is NULL

        AccessControlContext acc3 = new AccessControlContext(acc, new DC());

        acc2.equals(acc3);

    }

    private static class DC implements DomainCombiner {

        public ProtectionDomain[] combine(ProtectionDomain[] a,

                                        ProtectionDomain[] b) {

            // this is irrelevant

            return a;

        }

    }

}