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JCommon is a free general purpose Java class library that is used in several projects at www.jfree.org, including JFreeChart and JFreeReport.
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/* ========================================================================
 * JCommon : a free general purpose class library for the Java(tm) platform
 * ========================================================================
 *
 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
 * 
 * Project Info:  http://www.jfree.org/jcommon/index.html
 *
 * This library is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by 
 * the Free Software Foundation; either version 2.1 of the License, or 
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
 * USA.  
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 * 
 * ----------------------
 * TextFragmentTests.java
 * ----------------------
 * (C) Copyright 2004, 2005, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: TextFragmentTests.java,v 1.5 2007/11/02 17:50:36 taqua Exp $
 *
 * Changes:
 * --------
 * 22-Mar-2004 : Version 1 (DG);
 *
 */

package org.jfree.text.junit;

import java.awt.Color;
import java.awt.Font;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jfree.text.TextFragment;

/**
 * Tests for the {@link TextFragment} class.
 */
public class TextFragmentTests extends TestCase {

    /**
     * Returns the tests as a test suite.
     *
     * @return The test suite.
     */
    public static Test suite() {
        return new TestSuite(TextFragmentTests.class);
    }

    /**
     * Constructs a new set of tests.
     *
     * @param name  the name of the tests.
     */
    public TextFragmentTests(final String name) {
        super(name);
    }

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {
        
        TextFragment tf1 = new TextFragment("Test");
        TextFragment tf2 = new TextFragment("Test");
        assertTrue(tf1.equals(tf2));
        assertTrue(tf2.equals(tf1));

        // text
        tf1 = new TextFragment("Test 1");
        assertFalse(tf1.equals(tf2));
        tf2 = new TextFragment("Test 1");
        assertTrue(tf1.equals(tf2));

        // font
        tf1 = new TextFragment("Test 1", new Font("Arial", Font.BOLD, 11));
        assertFalse(tf1.equals(tf2));
        tf2 = new TextFragment("Test 1", new Font("Arial", Font.BOLD, 11));
        assertTrue(tf1.equals(tf2));
        
        // paint
        tf1 = new TextFragment("Test 1", new Font("Arial", Font.BOLD, 11), Color.red);
        assertFalse(tf1.equals(tf2));
        tf2 = new TextFragment("Test 1", new Font("Arial", Font.BOLD, 11), Color.red);
        assertTrue(tf1.equals(tf2));

    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {

        final TextFragment tf1 = new TextFragment("Test");
        TextFragment tf2 = null;

        try {
            final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            final ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(tf1);
            out.close();

            final ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
            tf2 = (TextFragment) in.readObject();
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertEquals(tf1, tf2);

    }

}