test/java/util/LinkedList/Remove.java

/*
 * Copyright (c) 1998, 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.
 *
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 */

/*
 * @test
 * @bug 4147946
 * @summary Due to a bug in LinkedList's ListIterator's remove() logic, the List would
 *          get screwed up by a remove() following a previous().
 */

import java.util.LinkedList;
import java.util.ListIterator;

public class Remove {
    public static
    void main(String[] args) {
        LinkedList list = new LinkedList();
        ListIterator e = list.listIterator();
        Object o = new Integer(1);
        e.add(o);
        e.previous();
        e.next();
        e.remove();
        e.add(o);
        if (!o.equals(list.get(0)))
            throw new RuntimeException("LinkedList ListIterator remove failed.");
    }
}