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Commons Collections example source code file (TestDualTreeBidiMap2.java)

This example Commons Collections source code file (TestDualTreeBidiMap2.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Collections tags/keywords

bytearrayoutputstream, bytearrayoutputstream, exception, io, iterator, object, object, objectinputstream, objectoutputstream, reversecomparator, sortedbidimap, sortedbidimap, string, string, testdualtreebidimap2, util

The Commons Collections TestDualTreeBidiMap2.java source code

 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
package org.apache.commons.collections.bidimap;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

import junit.framework.Test;
import junit.textui.TestRunner;

import org.apache.commons.collections.BidiMap;
import org.apache.commons.collections.BulkTest;
import org.apache.commons.collections.SortedBidiMap;
import org.apache.commons.collections.comparators.ComparableComparator;
import org.apache.commons.collections.comparators.ReverseComparator;

 * JUnit tests.
 * @version $Revision: 646780 $ $Date: 2008-04-10 13:48:07 +0100 (Thu, 10 Apr 2008) $
 * @author Matthew Hawthorne
 * @author Stephen Colebourne
 * @author Jonas Van Poucke
public class TestDualTreeBidiMap2 extends AbstractTestSortedBidiMap {

    public static void main(String[] args) {
    public static Test suite() {
        return BulkTest.makeSuite(TestDualTreeBidiMap2.class);

    public TestDualTreeBidiMap2(String testName) {

    public BidiMap makeEmptyBidiMap() {
        return new DualTreeBidiMap(new ReverseComparator(ComparableComparator.getInstance()));

    public Map makeConfirmedMap() {
        return new TreeMap(new ReverseComparator(ComparableComparator.getInstance()));

    public void testComparator() {
        SortedBidiMap bidi = (SortedBidiMap) map;
        assertTrue(bidi.comparator() instanceof ReverseComparator);

    public void testSerializeDeserializeCheckComparator() throws Exception {
        SortedBidiMap obj = (SortedBidiMap) makeObject();
        if (obj instanceof Serializable && isTestSerialization()) {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(buffer);

            ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
            Object dest = in.readObject();
            SortedBidiMap bidi = (SortedBidiMap) dest;
            assertTrue(bidi.comparator() instanceof ReverseComparator);

    public void testSortOrder() throws Exception {
        SortedBidiMap sm = (SortedBidiMap) makeFullMap();

        // Sort by the comparator used in the makeEmptyBidiMap() method
        List newSortedKeys = Arrays.asList(getSampleKeys());
        Collections.sort(newSortedKeys, new ReverseComparator(ComparableComparator.getInstance()));
        newSortedKeys = Collections.unmodifiableList(newSortedKeys);

        Iterator mapIter = sm.keySet().iterator();
        Iterator expectedIter = newSortedKeys.iterator();
        while (expectedIter.hasNext()) {
            Object expectedKey = expectedIter.next();
            Object mapKey = mapIter.next();
            assertNotNull("key in sorted list may not be null", expectedKey);
            assertNotNull("key in map may not be null", mapKey);
            assertEquals("key from sorted list and map must be equal", expectedKey, mapKey);

    public String getCompatibilityVersion() {
        return "3.Test2";

     * Override to prevent infinite recursion of tests.
    public String[] ignoredTests() {
        return new String[] {"TestDualTreeBidiMap2.bulkTestInverseMap.bulkTestInverseMap"};
//    public void testCreate() throws Exception {
//        resetEmpty();
//        writeExternalFormToDisk((java.io.Serializable) map, "D:/dev/collections/data/test/DualTreeBidiMap.emptyCollection.version3.Test2.obj");
//        resetFull();
//        writeExternalFormToDisk((java.io.Serializable) map, "D:/dev/collections/data/test/DualTreeBidiMap.fullCollection.version3.Test2.obj");
//    }

Other Commons Collections examples (source code examples)

Here is a short list of links related to this Commons Collections TestDualTreeBidiMap2.java source code file:

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