/*

 * 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

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 * questions.

 */

/*

 * @test

 * @bug 6882687 8011124

 * @summary KerberosTime too imprecise

 * @modules java.security.jgss/sun.security.krb5.internal

 */

import sun.security.krb5.internal.KerberosTime;

public class MicroTime {

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

        // We count how many different KerberosTime values

        // can be acquired within one second.

        KerberosTime t1 = KerberosTime.now();

        KerberosTime last = t1;

        int count = 0;

        while (true) {

            KerberosTime t2 = KerberosTime.now();

            if (t2.getTime() - t1.getTime() > 1000) break;

            if (!last.equals(t2)) {

                last = t2;

                count++;

            }

        }

        // We believe a nice KerberosTime can at least tell the

        // difference of 100 musec.

        if (count < 10000) {

            throw new Exception("What? only " + (1000000/count) +

                    " musec precision?");

        }

    }

}