net.darkmist.clf.UtilTest.java Source code

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Here is the source code for net.darkmist.clf.UtilTest.java

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/*
 *  Copyright (C) 2012 Ed Schaller <schallee@darkmist.net>
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package net.darkmist.clf;

import java.util.Arrays;
import java.util.Comparator;

import junit.framework.TestCase;
import junit.framework.TestSuite;
import junit.framework.Test;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class UtilTest extends TestCase {
    private static final Class<UtilTest> CLASS = UtilTest.class;
    @SuppressWarnings("unused")
    private static final String CLASS_NAME = CLASS.getName();
    @SuppressWarnings("unused")
    private static final Log logger = LogFactory.getLog(CLASS);
    private static final Comparator<Integer> comparator = Util.getComparableComparator();

    @Override
    protected void setUp() throws Exception {
    }

    public void testAThenB() throws Exception {
        Integer[] a = new Integer[] { 1, 2, 3, 4, 5 };
        Integer[] b = new Integer[] { 6, 7, 8, 9 };
        Integer[] expected = new Integer[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        Integer[] actual = new Integer[a.length + b.length];

        Util.merge(a, b, actual, comparator);
        assertTrue(Arrays.equals(actual, expected));
    }

    public void testBThenA() throws Exception {
        Integer[] a = new Integer[] { 6, 7, 8, 9 };
        Integer[] b = new Integer[] { 1, 2, 3, 4, 5 };
        Integer[] expected = new Integer[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        Integer[] actual = new Integer[a.length + b.length];

        Util.merge(a, b, actual, comparator);
        assertTrue(Arrays.equals(actual, expected));
    }

    public void testInterleavedAB() throws Exception {
        Integer[] a = new Integer[] { 1, 3, 5, 7, 9 };
        Integer[] b = new Integer[] { 2, 4, 6, 8 };
        Integer[] expected = new Integer[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        Integer[] actual = new Integer[a.length + b.length];

        Util.merge(a, b, actual, comparator);
        assertTrue(Arrays.equals(actual, expected));
    }

    public void testInterleavedBA() throws Exception {
        Integer[] b = new Integer[] { 1, 3, 5, 7, 9 };
        Integer[] a = new Integer[] { 2, 4, 6, 8 };
        Integer[] expected = new Integer[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        Integer[] actual = new Integer[a.length + b.length];

        Util.merge(a, b, actual, comparator);
        assertTrue(Arrays.equals(actual, expected));
    }

    public void testTailInterleavedAB() throws Exception {
        Integer[] a = new Integer[] { 1, 2, 3, 5, 7, 9 };
        Integer[] b = new Integer[] { 4, 6, 8 };
        Integer[] expected = new Integer[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        Integer[] actual = new Integer[a.length + b.length];

        Util.merge(a, b, actual, comparator);
        assertTrue(Arrays.equals(actual, expected));
    }

    public void testTailInterleavedBA() throws Exception {
        Integer[] b = new Integer[] { 1, 2, 3, 5, 7, 9 };
        Integer[] a = new Integer[] { 4, 6, 8 };
        Integer[] expected = new Integer[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        Integer[] actual = new Integer[a.length + b.length];

        Util.merge(a, b, actual, comparator);
        assertTrue(Arrays.equals(actual, expected));
    }

    @Override
    protected void tearDown() {
    }

    public static Test suite() {
        return new TestSuite(CLASS);
    }

    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());
    }
}