Commons Collections example source code file (TestLinkedMap.java)

This example Commons Collections source code file (TestLinkedMap.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

arraylist, indexoutofboundsexception, indexoutofboundsexception, linkedmap, linkedmap, list, list, map, mapiterator, object, object, orderedmap, resettableiterator, testlistview, util

The Commons Collections TestLinkedMap.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.map;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

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

import org.apache.commons.collections.BulkTest;
import org.apache.commons.collections.MapIterator;
import org.apache.commons.collections.OrderedMap;
import org.apache.commons.collections.ResettableIterator;
import org.apache.commons.collections.list.AbstractTestList;

/**
 * JUnit tests.
 * 
 * @version $Revision: 646780 $ $Date: 2008-04-10 13:48:07 +0100 (Thu, 10 Apr 2008) $
 * 
 * @author Stephen Colebourne
 */
public class TestLinkedMap extends AbstractTestOrderedMap {

    public TestLinkedMap(String testName) {
        super(testName);
    }

    public static void main(String[] args) {
        TestRunner.run(suite());
    }
    
    public static Test suite() {
        return BulkTest.makeSuite(TestLinkedMap.class);
    }

    public Map makeEmptyMap() {
        return new LinkedMap();
    }

    public String getCompatibilityVersion() {
        return "3";
    }

    //-----------------------------------------------------------------------    
    public void testReset() {
        resetEmpty();
        OrderedMap ordered = (OrderedMap) map;
        ((ResettableIterator) ordered.mapIterator()).reset();
        
        resetFull();
        ordered = (OrderedMap) map;
        List list = new ArrayList(ordered.keySet());
        ResettableIterator it = (ResettableIterator) ordered.mapIterator();
        assertSame(list.get(0), it.next());
        assertSame(list.get(1), it.next());
        it.reset();
        assertSame(list.get(0), it.next());
    }
    
    //-----------------------------------------------------------------------
    public void testInsertionOrder() {
        if (isPutAddSupported() == false || isPutChangeSupported() == false) return;
        Object[] keys = getSampleKeys();
        Object[] values = getSampleValues();
        Iterator it = null;
        
        resetEmpty();
        map.put(keys[0], values[0]);
        map.put(keys[1], values[1]);
        it = map.keySet().iterator();
        assertSame(keys[0], it.next());
        assertSame(keys[1], it.next());
        it = map.values().iterator();
        assertSame(values[0], it.next());
        assertSame(values[1], it.next());

        // no change to order
        map.put(keys[1], values[1]);
        it = map.keySet().iterator();
        assertSame(keys[0], it.next());
        assertSame(keys[1], it.next());
        it = map.values().iterator();
        assertSame(values[0], it.next());
        assertSame(values[1], it.next());

        // no change to order
        map.put(keys[1], values[2]);
        it = map.keySet().iterator();
        assertSame(keys[0], it.next());
        assertSame(keys[1], it.next());
        it = map.values().iterator();
        assertSame(values[0], it.next());
        assertSame(values[2], it.next());

        // no change to order
        map.put(keys[0], values[3]);
        it = map.keySet().iterator();
        assertSame(keys[0], it.next());
        assertSame(keys[1], it.next());
        it = map.values().iterator();
        assertSame(values[3], it.next());
        assertSame(values[2], it.next());
    }
    
    //-----------------------------------------------------------------------
    public void testGetByIndex() {
        resetEmpty();
        LinkedMap lm = (LinkedMap) map;
        try {
            lm.get(0);
        } catch (IndexOutOfBoundsException ex) {}
        try {
            lm.get(-1);
        } catch (IndexOutOfBoundsException ex) {}
        
        resetFull();
        lm = (LinkedMap) map;
        try {
            lm.get(-1);
        } catch (IndexOutOfBoundsException ex) {}
        try {
            lm.get(lm.size());
        } catch (IndexOutOfBoundsException ex) {}
        
        int i = 0;
        for (MapIterator it = lm.mapIterator(); it.hasNext(); i++) {
            assertSame(it.next(), lm.get(i));
        }
    }

    public void testGetValueByIndex() {
        resetEmpty();
        LinkedMap lm = (LinkedMap) map;
        try {
            lm.getValue(0);
        } catch (IndexOutOfBoundsException ex) {}
        try {
            lm.getValue(-1);
        } catch (IndexOutOfBoundsException ex) {}
        
        resetFull();
        lm = (LinkedMap) map;
        try {
            lm.getValue(-1);
        } catch (IndexOutOfBoundsException ex) {}
        try {
            lm.getValue(lm.size());
        } catch (IndexOutOfBoundsException ex) {}
        
        int i = 0;
        for (MapIterator it = lm.mapIterator(); it.hasNext(); i++) {
            it.next();
            assertSame(it.getValue(), lm.getValue(i));
        }
    }

    public void testIndexOf() {
        resetEmpty();
        LinkedMap lm = (LinkedMap) map;
        assertEquals(-1, lm.indexOf(getOtherKeys()));
        
        resetFull();
        lm = (LinkedMap) map;
        List list = new ArrayList();
        for (MapIterator it = lm.mapIterator(); it.hasNext();) {
            list.add(it.next());
        }
        for (int i = 0; i < list.size(); i++) {
            assertEquals(i, lm.indexOf(list.get(i)));
        }
    }

    public void testRemoveByIndex() {
        resetEmpty();
        LinkedMap lm = (LinkedMap) map;
        try {
            lm.remove(0);
        } catch (IndexOutOfBoundsException ex) {}
        try {
            lm.remove(-1);
        } catch (IndexOutOfBoundsException ex) {}
        
        resetFull();
        lm = (LinkedMap) map;
        try {
            lm.remove(-1);
        } catch (IndexOutOfBoundsException ex) {}
        try {
            lm.remove(lm.size());
        } catch (IndexOutOfBoundsException ex) {}
        
        List list = new ArrayList();
        for (MapIterator it = lm.mapIterator(); it.hasNext();) {
            list.add(it.next());
        }
        for (int i = 0; i < list.size(); i++) {
            Object key = list.get(i);
            Object value = lm.get(key);
            assertEquals(value, lm.remove(i));
            list.remove(i);
            assertEquals(false, lm.containsKey(key));
        }
    }
    
    public BulkTest bulkTestListView() {
        return new TestListView();
    }
    
    public class TestListView extends AbstractTestList {
        
        TestListView() {
            super("TestListView");
        }

        public List makeEmptyList() {
            return ((LinkedMap) TestLinkedMap.this.makeEmptyMap()).asList();
        }
        
        public List makeFullList() {
            return ((LinkedMap) TestLinkedMap.this.makeFullMap()).asList();
        }
        
        public Object[] getFullElements() {
            return TestLinkedMap.this.getSampleKeys();
        }
        public boolean isAddSupported() {
            return false;
        }
        public boolean isRemoveSupported() {
            return false;
        }
        public boolean isSetSupported() {
            return false;
        }
        public boolean isNullSupported() {
            return TestLinkedMap.this.isAllowNullKey();
        }
        public boolean isTestSerialization() {
            return false;
        }
    }

    public void testClone() {
        LinkedMap map = new LinkedMap(10);
        map.put("1", "1");
        Map cloned = (Map) map.clone();
        assertEquals(map.size(), cloned.size());
        assertSame(map.get("1"), cloned.get("1"));
    }
    
//    public void testCreate() throws Exception {
//        resetEmpty();
//        writeExternalFormToDisk((java.io.Serializable) map, "D:/dev/collections/data/test/LinkedMap.emptyCollection.version3.obj");
//        resetFull();
//        writeExternalFormToDisk((java.io.Serializable) map, "D:/dev/collections/data/test/LinkedMap.fullCollection.version3.obj");
//    }
}