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Commons Collections example source code file (TestPredicatedCollection.java)

This example Commons Collections source code file (TestPredicatedCollection.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, arraylist, collection, collection, illegalargumentexception, integer, integer, list, object, predicate, predicate, string, test, testpredicatedcollection, util

The Commons Collections TestPredicatedCollection.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.collection;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;

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

import org.apache.commons.collections.Predicate;
import org.apache.commons.collections.PredicateUtils;

/**
 * Extension of {@link TestCollection} for exercising the 
 * {@link PredicatedCollection} implementation.
 *
 * @since Commons Collections 3.0
 * @version $Revision: 646780 $ $Date: 2008-04-10 13:48:07 +0100 (Thu, 10 Apr 2008) $
 * 
 * @author Phil Steitz
 */
public class TestPredicatedCollection extends AbstractTestCollection {

    public TestPredicatedCollection(String name) {
        super(name);
    }
    
    public static Test suite() {
        return new TestSuite(TestPredicatedCollection.class);
    }

    public static void main(String args[]) {
        String[] testCaseName = { TestPredicatedCollection.class.getName()};
        junit.textui.TestRunner.main(testCaseName);
    }
 
   //------------------------------------------------------------------------
        
    protected Predicate truePredicate = PredicateUtils.truePredicate();
    
    protected Collection decorateCollection(Collection collection, 
        Predicate predicate) {
        return PredicatedCollection.decorate(collection, predicate);
    }
    
    public Collection makeCollection() {
        return decorateCollection(new ArrayList(), truePredicate);
    }
    
    public Collection makeConfirmedCollection() {
        return new ArrayList();
    }
    
    public Object[] getFullElements() {
        return new Object[] {"1", "3", "5", "7", "2", "4", "6"};
    }
    
    public Collection makeFullCollection() {
        List list = new ArrayList();
        list.addAll(Arrays.asList(getFullElements()));
        return decorateCollection(list, truePredicate);
    }
    
    public Collection makeConfirmedFullCollection() {
        List list = new ArrayList();
        list.addAll(Arrays.asList(getFullElements()));
        return list;
    }

 //-----------------------------------------------------------------
    protected Predicate testPredicate =  
        new Predicate() {
            public boolean evaluate(Object o) {
                return o instanceof String;
            }
        };
    
    public Collection makeTestCollection() {
        return decorateCollection(new ArrayList(), testPredicate);
    }
     
    public void testIllegalAdd() {
        Collection c = makeTestCollection();
        Integer i = new Integer(3);
        try {
            c.add(i);
            fail("Integer should fail string predicate.");
        } catch (IllegalArgumentException e) {
            // expected
        }
        assertTrue("Collection shouldn't contain illegal element", 
         !c.contains(i));   
    }

    public void testIllegalAddAll() {
        Collection c = makeTestCollection();
        List elements = new ArrayList();
        elements.add("one");
        elements.add("two");
        elements.add(new Integer(3));
        elements.add("four");
        try {
            c.addAll(elements);
            fail("Integer should fail string predicate.");
        } catch (IllegalArgumentException e) {
            // expected
        }
        assertTrue("Collection shouldn't contain illegal element", 
         !c.contains("one"));   
        assertTrue("Collection shouldn't contain illegal element", 
         !c.contains("two"));   
        assertTrue("Collection shouldn't contain illegal element", 
         !c.contains(new Integer(3)));   
        assertTrue("Collection shouldn't contain illegal element", 
         !c.contains("four"));   
    }

    public String getCompatibilityVersion() {
        return "3.1";
    }

//    public void testCreate() throws Exception {
//        resetEmpty();
//        writeExternalFormToDisk((java.io.Serializable) collection, "D:/dev/collections/data/test/PredicatedCollection.emptyCollection.version3.1.obj");
//        resetFull();
//        writeExternalFormToDisk((java.io.Serializable) collection, "D:/dev/collections/data/test/PredicatedCollection.fullCollection.version3.1.obj");
//    }

}

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