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Commons Collections example source code file (TestPredicatedSortedSet.java)

This example Commons Collections source code file (TestPredicatedSortedSet.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

aone, atwo, bthree, illegalargumentexception, predicate, set, set, sortedset, sortedset, string, string, testpredicatedsortedset, treeset, treeset, util

The Commons Collections TestPredicatedSortedSet.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.set;

import java.util.Arrays;
import java.util.Comparator;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;

import junit.framework.Test;

import org.apache.commons.collections.BulkTest;
import org.apache.commons.collections.Predicate;
import org.apache.commons.collections.PredicateUtils;
import org.apache.commons.collections.map.TestPredicatedSortedMap;

/**
 * Extension of {@link AbstractTestSortedSet} for exercising the 
 * {@link PredicatedSortedSet} 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 TestPredicatedSortedSet extends AbstractTestSortedSet{
    
    public TestPredicatedSortedSet(String testName) {
        super(testName);
    }
    
    public static Test suite() {
        return BulkTest.makeSuite(TestPredicatedSortedSet.class);
    }
    
    public static void main(String args[]) {
        String[] testCaseName = { TestPredicatedSortedMap.class.getName()};
        junit.textui.TestRunner.main(testCaseName);
    }
    
 //-------------------------------------------------------------------    
    
    protected Predicate truePredicate = PredicateUtils.truePredicate();
    
    public Set makeEmptySet() {
        return PredicatedSortedSet.decorate(new TreeSet(), truePredicate);
    }
    
    public Set makeFullSet() {
        TreeSet set = new TreeSet();
        set.addAll(Arrays.asList(getFullElements()));
        return PredicatedSortedSet.decorate(set, truePredicate);
    }
   
    
//--------------------------------------------------------------------   
    protected Predicate testPredicate =  
        new Predicate() {
            public boolean evaluate(Object o) {
                return (o instanceof String) && (((String) o).startsWith("A"));
            }
        };      
     
    
    protected SortedSet makeTestSet() {
        return PredicatedSortedSet.decorate(new TreeSet(), testPredicate);
    }
    
    public void testGetSet() {
        SortedSet set = makeTestSet();
        assertTrue("returned set should not be null",
            ((PredicatedSortedSet) set).getSet() != null);
    }
    
    public void testIllegalAdd() {
        SortedSet set = makeTestSet();
        String testString = "B";
        try {
            set.add(testString);
            fail("Should fail string predicate.");
        } catch (IllegalArgumentException e) {
            // expected
        }
        assertTrue("Collection shouldn't contain illegal element", 
         !set.contains(testString));   
    }

    public void testIllegalAddAll() {
        SortedSet set = makeTestSet();
        Set elements = new TreeSet();
        elements.add("Aone");
        elements.add("Atwo");
        elements.add("Bthree");
        elements.add("Afour");
        try {
            set.addAll(elements);
            fail("Should fail string predicate.");
        } catch (IllegalArgumentException e) {
            // expected
        }
        assertTrue("Set shouldn't contain illegal element", 
         !set.contains("Aone"));   
        assertTrue("Set shouldn't contain illegal element", 
         !set.contains("Atwo"));   
        assertTrue("Set shouldn't contain illegal element", 
         !set.contains("Bthree"));   
        assertTrue("Set shouldn't contain illegal element", 
         !set.contains("Afour"));   
    }
    
    public void testComparator() {
        SortedSet set = makeTestSet();
        Comparator c = set.comparator();
        assertTrue("natural order, so comparator should be null", c == null);
    }

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

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

}

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