// from gee.cs.oswego.edu/home/jsr166/jsr166

package jsr166tests.jtreg.util.Collections;

/*
 * Copyright 2002 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.
 */

/*
 * @test
 * @bug 4593209
 * @summary Reverse comparator was subtly broken
 * @author Josh bloch
 */

import java.util.*;

public class ReverseOrder {
    public static void main(String[] args) throws Exception {
        Foo[] a = { new Foo(2), new Foo(3), new Foo(1) };
        List list = Arrays.asList(a);
        Collections.sort(list, Collections.reverseOrder());

        Foo[] golden = { new Foo(3), new Foo(2), new Foo(1) };
        List goldenList = Arrays.asList(golden);
        if (!list.equals(goldenList))
            throw new Exception(list.toString());
    }
}

class Foo implements Comparable {
    int val;
    Foo(int i) { val = i; }

    public int compareTo(Object o) {
        Foo f = (Foo)o;
        return (val < f.val ? Integer.MIN_VALUE : (val == f.val ? 0 : 1));
    }

    public boolean equals(Object o) {
        return o instanceof Foo && ((Foo)o).val == val;
    }

    public int hashCode()    { return val; }

    public String toString() { return Integer.toString(val); }
}
