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Commons Collections example source code file (TestUnmodifiableSortedSet.java)

This example Commons Collections source code file (TestUnmodifiableSortedSet.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, comparator, expecting, expecting, integer, integer, set, string, testunmodifiablesortedset, treeset, treeset, unmodifiablesortedset, unsupportedoperationexception, unsupportedoperationexception, util

The Commons Collections TestUnmodifiableSortedSet.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.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Set;
import java.util.TreeSet;

import junit.framework.Test;

import org.apache.commons.collections.BulkTest;

/**
 * Extension of {@link AbstractTestSortedSet} for exercising the 
 * {@link UnmodifiableSortedSet} 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 TestUnmodifiableSortedSet extends AbstractTestSortedSet{
    
    public TestUnmodifiableSortedSet(String testName) {
        super(testName);
    }
    
    public static Test suite() {
        return BulkTest.makeSuite(TestUnmodifiableSortedSet.class);
    }
    
    public static void main(String args[]) {
        String[] testCaseName = { TestUnmodifiableSortedSet.class.getName()};
        junit.textui.TestRunner.main(testCaseName);
    }
    
    //-------------------------------------------------------------------  
    public Set makeEmptySet() {
        return UnmodifiableSortedSet.decorate(new TreeSet());
    }
    
    public Set makeFullSet() {
        TreeSet set = new TreeSet();
        set.addAll(Arrays.asList(getFullElements()));
        return UnmodifiableSortedSet.decorate(set);
    }
    
    public boolean isAddSupported() {
        return false;
    }
    
    public boolean isRemoveSupported() {
        return false;
    }
           
    //--------------------------------------------------------------------
    protected UnmodifiableSortedSet set = null;
    protected ArrayList array = null;
    
    protected void setupSet() {
        set = (UnmodifiableSortedSet) makeFullSet();
        array = new ArrayList();
        array.add(new Integer(1));
    }
    
    /** 
     * Verify that base set and subsets are not modifiable
     */
    public void testUnmodifiable() {
        setupSet();
        verifyUnmodifiable(set);
        verifyUnmodifiable(set.headSet(new Integer(1)));
        verifyUnmodifiable(set.tailSet(new Integer(1)));
        verifyUnmodifiable(set.subSet(new Integer(1), new Integer(3)));    
    }
    
    /**
     * Verifies that a set is not modifiable
     */
    public void verifyUnmodifiable(Set set) {
        try {
            set.add("value");
            fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected  
        }
        try {
            set.addAll(new TreeSet());
            fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            set.clear();
            fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            set.remove("x");
            fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            set.removeAll(array);
            fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            set.retainAll(array);
            fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
    }
    
    public void testComparator() {
        setupSet();
        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/UnmodifiableSortedSet.emptyCollection.version3.1.obj");
//        resetFull();
//        writeExternalFormToDisk((java.io.Serializable) collection, "D:/dev/collections/data/test/UnmodifiableSortedSet.fullCollection.version3.1.obj");
//    }

}

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