test/jdk/java/util/Collections/ReplaceAll.java

/*
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 * 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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 * questions.
 */

/*
 * @test
 * @bug 4323074
 * @summary Basic test for new replaceAll algorithm
 */

import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Vector;

public class ReplaceAll {
    static final int SIZE = 20;

    public static void main(String[] args) throws Exception {
        List[] a = {new ArrayList(), new LinkedList(), new Vector()};

        for (int i=0; i<a.length; i++) {
            List lst = a[i];
            for (int j=1; j<=SIZE; j++)
                lst.add(new Integer(j % 3));
            List goal = Collections.nCopies(SIZE, "*");

            for (int j=0; j<3; j++) {
                List before = new ArrayList(lst);
                if (!Collections.replaceAll(lst, new Integer(j), "*"))
                    throw new Exception("False return value: "+i+", "+j);
                if (lst.equals(before))
                    throw new Exception("Unchanged: "+i+", "+j+", "+": "+lst);
                if (lst.equals(goal) != (j==2))
                    throw new Exception("Wrong change:"+i+", "+j);
            }
            if (Collections.replaceAll(lst, "love", "hate"))
                throw new Exception("True return value: "+i);
        }
    }
}