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Commons Collections example source code file (TestUnmodifiableMapIterator.java)

This example Commons Collections source code file (TestUnmodifiableMapIterator.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

a, a, abstracttestmapiterator, b, bidimap, c, illegalargumentexception, map, map, mapiterator, mapiterator, testunmodifiablemapiterator, testunmodifiablemapiterator, unmodifiable, util

The Commons Collections TestUnmodifiableMapIterator.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.iterators;

import java.util.HashMap;
import java.util.Map;

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

import org.apache.commons.collections.BidiMap;
import org.apache.commons.collections.MapIterator;
import org.apache.commons.collections.Unmodifiable;
import org.apache.commons.collections.bidimap.DualHashBidiMap;

/**
 * Tests the UnmodifiableMapIterator.
 * 
 * @version $Revision: 646780 $ $Date: 2008-04-10 13:48:07 +0100 (Thu, 10 Apr 2008) $
 * 
 * @author Stephen Colebourne
 */
public class TestUnmodifiableMapIterator extends AbstractTestMapIterator {

    public static Test suite() {
        return new TestSuite(TestUnmodifiableMapIterator.class);
    }

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

    public MapIterator makeEmptyMapIterator() {
        return UnmodifiableMapIterator.decorate(new DualHashBidiMap().mapIterator());
    }

    public MapIterator makeFullMapIterator() {
        return UnmodifiableMapIterator.decorate(((BidiMap) getMap()).mapIterator());
    }
    
    public Map getMap() {
        Map testMap = new DualHashBidiMap();
        testMap.put("A", "a");
        testMap.put("B", "b");
        testMap.put("C", "c");
        return testMap;
    }

    public Map getConfirmedMap() {
        Map testMap = new HashMap();
        testMap.put("A", "a");
        testMap.put("B", "b");
        testMap.put("C", "c");
        return testMap;
    }

    public boolean supportsRemove() {
        return false;
    }

    public boolean supportsSetValue() {
        return false;
    }
    
    //-----------------------------------------------------------------------
    public void testMapIterator() {
        assertTrue(makeEmptyMapIterator() instanceof Unmodifiable);
    }
    
    public void testDecorateFactory() {
        MapIterator it = makeFullMapIterator();
        assertSame(it, UnmodifiableMapIterator.decorate(it));
        
        it = ((BidiMap) getMap()).mapIterator() ;
        assertTrue(it != UnmodifiableMapIterator.decorate(it));
        
        try {
            UnmodifiableMapIterator.decorate(null);
            fail();
        } catch (IllegalArgumentException ex) {}
    }

}

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