standardgradientpainttransformertests.java

来自「JfreeChart 常用图表例子」· Java 代码 · 共 120 行

/* ========================================================================
 * JCommon : a free general purpose class library for the Java(tm) platform
 * ========================================================================
 *
 * (C) Copyright 2000-2004, 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., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 * 
 * ------------------------------------------
 * StandardGradientPaintTransformerTests.java
 * ------------------------------------------
 * (C) Copyright 2004, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: StandardGradientPaintTransformerTests.java,v 1.3 2004/10/22 11:54:15 taqua Exp $
 *
 * Changes
 * -------
 * 19-Mar-2004 : Version 1 (DG);
 *
 */

package org.jfree.ui.junit;

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.ui.GradientPaintTransformType;
import org.jfree.ui.StandardGradientPaintTransformer;

/**
 * Tests for the {@link StandardGradientPaintTransformer} class.
 */
public class StandardGradientPaintTransformerTests extends TestCase {

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

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

    /**
     * Test that the equals() method distinguishes all fields.
     */
    public void testEquals() {
        StandardGradientPaintTransformer t1 = new StandardGradientPaintTransformer();
        StandardGradientPaintTransformer t2 = new StandardGradientPaintTransformer();
        assertTrue(t1.equals(t2));
        assertTrue(t2.equals(t1));
        
        t1 = new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_VERTICAL);
        assertFalse(t1.equals(t2));
        t2 = new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_VERTICAL);
        assertTrue(t1.equals(t2));
    }
    
    /**
     * Serialize an instance, restore it, and check for identity.
     */
    public void testSerialization() {

        final StandardGradientPaintTransformer t1 = new StandardGradientPaintTransformer();
        StandardGradientPaintTransformer t2 = null;

        try {
            final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            final ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(t1);
            out.close();

            final ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
            t2 = (StandardGradientPaintTransformer) in.readObject();
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertTrue(t1.equals(t2)); 

    }

}