src/test/org/apache/commons/lang/ObjectUtilsTest.java

package org.apache.commons.lang;

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import junit.textui.TestRunner;
/**
 * Unit tests {@link org.apache.commons.lang.ObjectUtils}.
 *
 * @author <a href="mailto:jmcnally@collab.net">John McNally</a>
 * @author <a href="mailto:scolebourne@joda.org">Stephen Colebourne</a>
 * @author <a href="mailto:ridesmet@users.sourceforge.net">Ringo De Smet</a>
 * @version $Id: ObjectUtilsTest.java,v 1.1 2002/07/19 03:35:55 bayard Exp $
 */
public class ObjectUtilsTest extends TestCase
{
    private static final String FOO = "foo";
    private static final String BAR = "bar";

    public ObjectUtilsTest(String name)
    {
        super(name);
    }
    
    public static void main(String[] args) 
    {
        TestRunner.run(suite());
    }

    public static Test suite() 
    {
    	TestSuite suite = new TestSuite(ObjectUtilsTest.class);
    	suite.setName("ObjectUtils Tests");
        return suite;
    }

    protected void setUp() throws Exception 
    {
        super.setUp();
    }

    protected void tearDown() throws Exception
    {
        super.tearDown();
    }

    //-----------------------------------------------------------------------
    
    public void testIsNull()
    {
        Object o = FOO;
        Object dflt = BAR;
        assertSame("dflt was not returned when o was null", dflt,
                     ObjectUtils.defaultIfNull(null, dflt));
        assertSame("dflt was returned when o was not null", o,
                     ObjectUtils.defaultIfNull(o, dflt));
    }
        
    public void testEquals()
    {
        assertTrue("ObjectUtils.equals(null, null) returned false", 
                   ObjectUtils.equals(null, null));
        assertTrue("ObjectUtils.equals(\"foo\", null) returned true", 
                   !ObjectUtils.equals(FOO, null));
        assertTrue("ObjectUtils.equals(null, \"bar\") returned true", 
                   !ObjectUtils.equals(null, BAR));
        assertTrue("ObjectUtils.equals(\"foo\", \"bar\") returned true", 
                   !ObjectUtils.equals(FOO, BAR));
        assertTrue("ObjectUtils.equals(\"foo\", \"foo\") returned false", 
                   ObjectUtils.equals(FOO, FOO));
    }        
}