/*

 * Copyright (c) 2008, 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.

 */

/* @test

 * @bug 6717876

 * @summary Make java.net.NetworkInterface.getIndex() public

 */

import java.net.*;

import java.util.Enumeration;

public class IndexTest {

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

        Enumeration<NetworkInterface> netifs = NetworkInterface.getNetworkInterfaces();

        NetworkInterface nif = null;

        while (netifs.hasMoreElements()) {

            nif = netifs.nextElement();

            int index = nif.getIndex();

            if (index >= 0) {

                NetworkInterface nif2 = NetworkInterface.getByIndex(index);

                if (! nif.equals(nif2)) {

                    throw new RuntimeException("both interfaces should be equal");

                }

            }

        }

        try {

            nif = NetworkInterface.getByIndex(-1);

            throw new RuntimeException("Should have thrown IllegalArgumentException");

        } catch (IllegalArgumentException e) {

            // OK

        }

        // In all likelyhood, this interface should not exist.

        nif = NetworkInterface.getByIndex(Integer.MAX_VALUE - 1);

        if (nif != null) {

            throw new RuntimeException("getByIndex() should have returned null");

        }

    }

}