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Commons Collections example source code file (TestPredicatedSortedMap.java)

This example Commons Collections source code file (TestPredicatedSortedMap.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, b, b, c, illegal, illegalargument, illegalargument, illegalargumentexception, illegalargumentexception, integer, integer, predicate, sortedmap, treemap, util

The Commons Collections TestPredicatedSortedMap.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.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;

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

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

/**
 * Extension of {@link TestPredicatedMap} for exercising the 
 * {@link PredicatedSortedMap} 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 TestPredicatedSortedMap extends AbstractTestSortedMap{
    
    protected static final Predicate truePredicate = PredicateUtils.truePredicate();
    protected static final Predicate testPredicate = new Predicate() {
        public boolean evaluate(Object o) {
            return (o instanceof String);
        }
    };
    
    public TestPredicatedSortedMap(String testName) {
        super(testName);
    }
    
    public static Test suite() {
        return new TestSuite(TestPredicatedSortedMap.class);
    }
    
    public static void main(String args[]) {
        String[] testCaseName = { TestPredicatedSortedMap.class.getName()};
        junit.textui.TestRunner.main(testCaseName);
    }

    //-----------------------------------------------------------------------
    protected SortedMap decorateMap(SortedMap map, Predicate keyPredicate, 
        Predicate valuePredicate) {
        return PredicatedSortedMap.decorate(map, keyPredicate, valuePredicate);
    }
    
    public Map makeEmptyMap() {
        return decorateMap(new TreeMap(), truePredicate, truePredicate);
    }
   
    public Map makeTestMap() {
        return decorateMap(new TreeMap(), testPredicate, testPredicate);
    } 
    
    public SortedMap makeTestSortedMap() {
        return decorateMap(new TreeMap(), testPredicate, testPredicate);
    }
    
    public boolean isSubMapViewsSerializable() {
        // TreeMap sub map views have a bug in deserialization.
        return false;
    }

    public boolean isAllowNullKey() {
        return false;
    }

    // from TestPredicatedMap
    //-----------------------------------------------------------------------
    public void testEntrySet() {
        SortedMap map = makeTestSortedMap();
        assertTrue("returned entryset should not be null",
            map.entrySet() != null);
        map = decorateMap(new TreeMap(), null, null);
        map.put("oneKey", "oneValue");
        assertTrue("returned entryset should contain one entry",
            map.entrySet().size() == 1); 
        map = decorateMap(map, null, null);
    }
    
    public void testPut() {
        Map map = makeTestMap();
        try {
            map.put("Hi", new Integer(3));
            fail("Illegal value should raise IllegalArgument");
        } catch (IllegalArgumentException e) {
            // expected
        }

        try {
            map.put(new Integer(3), "Hi");
            fail("Illegal key should raise IllegalArgument");
        } catch (IllegalArgumentException e) {
            // expected
        }

        assertTrue(!map.containsKey(new Integer(3)));
        assertTrue(!map.containsValue(new Integer(3)));

        Map map2 = new HashMap();
        map2.put("A", "a");
        map2.put("B", "b");
        map2.put("C", "c");
        map2.put("c", new Integer(3));

        try {
            map.putAll(map2);
            fail("Illegal value should raise IllegalArgument");
        } catch (IllegalArgumentException e) {
            // expected
        }

        map.put("E", "e");
        Iterator iterator = map.entrySet().iterator();
        try {
            Map.Entry entry = (Map.Entry)iterator.next();
            entry.setValue(new Integer(3));
            fail("Illegal value should raise IllegalArgument");
        } catch (IllegalArgumentException e) {
            // expected
        }
        
        map.put("F", "f");
        iterator = map.entrySet().iterator();
        Map.Entry entry = (Map.Entry)iterator.next();
        entry.setValue("x");
        
    }

    //-----------------------------------------------------------------------
    public void testSortOrder() {
        SortedMap map = makeTestSortedMap();
        map.put("A",  "a");
        map.put("B", "b");
        try {
            map.put(null, "c");
            fail("Null key should raise IllegalArgument");
        } catch (IllegalArgumentException e) {
            // expected
        }
        map.put("C", "c");
        try {
            map.put("D", null);
            fail("Null value should raise IllegalArgument");
        } catch (IllegalArgumentException e) {
            // expected
        }
        assertEquals("First key should be A", map.firstKey(), "A");
        assertEquals("Last key should be C", map.lastKey(), "C");
        assertEquals("First key in tail map should be B", 
            map.tailMap("B").firstKey(), "B");
        assertEquals("Last key in head map should be B", 
            map.headMap("C").lastKey(), "B");
        assertEquals("Last key in submap should be B",
           map.subMap("A","C").lastKey(), "B");
        
        Comparator c = map.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) map,
//            "D:/dev/collections/data/test/PredicatedSortedMap.emptyCollection.version3.1.obj");
//        resetFull();
//        writeExternalFormToDisk(
//            (java.io.Serializable) map,
//            "D:/dev/collections/data/test/PredicatedSortedMap.fullCollection.version3.1.obj");
//    }
}

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