serialutilitiestests.java

来自「JfreeChart 常用图表例子」· Java 代码 · 共 422 行

/* ========================================================================
 * 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., 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.]
 * 
 * -------------------------
 * SerialUtilitiesTests.java
 * -------------------------
 * (C) Copyright 2003-2005, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: SerialUtilitiesTests.java,v 1.5 2005/05/03 16:36:41 mungady Exp $
 *
 * Changes
 * -------
 * 18-Sep-2003 : Version 1 (DG);
 * 26-Oct-2004 : Added checks for serializing Line2D instances (DG);
 * 04-Feb-2005 : Added tests for serializing Rectangle2D instances (DG);
 *
 */

package org.jfree.io.junit;

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Paint;
import java.awt.TexturePaint;
import java.awt.geom.Arc2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import javax.swing.UIManager;
import javax.swing.plaf.ColorUIResource;

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

import org.jfree.io.SerialUtilities;
import org.jfree.util.ShapeUtilities;

/**
 * Tests for the {@link SerialUtilities} class.
 */
public class SerialUtilitiesTests extends TestCase {

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

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

    /**
     * Tests the isSerializable(Class) method for some common cases.
     */
    public void testIsSerializable() {
        assertTrue(SerialUtilities.isSerializable(Color.class));
        assertTrue(SerialUtilities.isSerializable(ColorUIResource.class));
        assertFalse(SerialUtilities.isSerializable(GradientPaint.class));
        assertFalse(SerialUtilities.isSerializable(TexturePaint.class));
    }
    
    /**
     * Serialize a <code>Color</code> and check that it can be deserialized 
     * correctly.
     */
    public void testColorSerialization() {

        final Paint p1 = Color.blue;
        Paint p2 = null;

        try {
            final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            final ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writePaint(p1, out);
            out.close();

            final ByteArrayInputStream bias = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            final ObjectInputStream in = new ObjectInputStream(bias);
            p2 = SerialUtilities.readPaint(in);
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertEquals(p1, p2);

    }

    /**
     * Serialize a <code>ColorUIResource</code> and check that it can be 
     * deserialized correctly.
     */
    public void testColorUIResourceSerialization() {
        Paint p1 = UIManager.getColor("Panel.background");
        Paint p2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writePaint(p1, out);
            out.close();

            ByteArrayInputStream bias = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            ObjectInputStream in = new ObjectInputStream(bias);
            p2 = SerialUtilities.readPaint(in);
            in.close();
        }
        catch (Exception e) {
            fail(e.toString());
        }
        assertEquals(p1, p2);
    }

    /**
     * Serialize a <code>GradientPaint</code>, restore it, and check for 
     * equality.
     */
    public void testGradientPaintSerialization() {

        final Paint p1 = new GradientPaint(
            0.0f, 0.0f, Color.blue, 100.0f, 200.0f, Color.red
        );
        Paint p2 = null;

        try {
            final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            final ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writePaint(p1, out);
            out.close();

            final ByteArrayInputStream bias = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            final ObjectInputStream in = new ObjectInputStream(bias);
            p2 = SerialUtilities.readPaint(in);
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        
        // we want to check that the two objects are equal, but can't rely on 
        // GradientPaint's equals() method because it is just the default 
        // method inherited from Object...
        final GradientPaint gp1 = (GradientPaint) p1;
        final GradientPaint gp2 = (GradientPaint) p2;
        assertEquals(gp1.getColor1(), gp2.getColor1());
        assertEquals(gp1.getPoint1(), gp2.getPoint1());
        assertEquals(gp1.getColor2(), gp2.getColor2());
        assertEquals(gp1.getPoint2(), gp2.getPoint2());
        assertEquals(gp1.isCyclic(), gp2.isCyclic());

    }

    /**
     * Serialize a <code>TexturePaint</code>, restore it, and check for 
     * equality.  Since this class is not serializable, we expect null as the 
     * result.
     */
    public void testTexturePaintSerialization() {

        final Paint p1 = new TexturePaint(
            new BufferedImage(5, 5, BufferedImage.TYPE_INT_RGB), 
            new Rectangle2D.Double(0, 0, 5, 5)
        );
        Paint p2 = null;

        try {
            final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            final ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writePaint(p1, out);
            out.close();

            final ByteArrayInputStream bias = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            final ObjectInputStream in = new ObjectInputStream(bias);
            p2 = SerialUtilities.readPaint(in);
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        
        assertNull(p2);

    }

    /**
     * Serialize a <code>Line2D.Float</code> instance, and check that it can be 
     * deserialized correctly.
     */
    public void testLine2DFloatSerialization() {
        Line2D l1 = new Line2D.Float(1.0f, 2.0f, 3.0f, 4.0f);
        Line2D l2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writeShape(l1, out);
            out.close();

            ByteArrayInputStream bais = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            ObjectInputStream in = new ObjectInputStream(bais);
            l2 = (Line2D) SerialUtilities.readShape(in);
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertTrue(ShapeUtilities.equal(l1, l2));
    }

    /**
     * Serialize a <code>Line2D.Double</code> instance and check that it can be 
     * deserialized correctly.
     */
    public void testLine2DDoubleSerialization() {
        Line2D l1 = new Line2D.Double(1.0, 2.0, 3.0, 4.0);
        Line2D l2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writeShape(l1, out);
            out.close();

            ByteArrayInputStream bais = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            ObjectInputStream in = new ObjectInputStream(bais);
            l2 = (Line2D) SerialUtilities.readShape(in);
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertTrue(ShapeUtilities.equal(l1, l2));
    }

    /**
     * Serialize a <code>Rectangle2D.Float</code> instance, and check that it 
     * can be deserialized correctly.
     */
    public void testRectangle2DFloatSerialization() {
        Rectangle2D r1 = new Rectangle2D.Float(1.0f, 2.0f, 3.0f, 4.0f);
        Rectangle2D r2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writeShape(r1, out);
            out.close();

            ByteArrayInputStream bais = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            ObjectInputStream in = new ObjectInputStream(bais);
            r2 = (Rectangle2D) SerialUtilities.readShape(in);
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertTrue(ShapeUtilities.equal(r1, r2));
    }

    /**
     * Serialize a <code>Rectangle2D.Double</code> instance and check that it 
     * can be deserialized correctly.
     */
    public void testRectangle2DDoubleSerialization() {
        Rectangle2D r1 = new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0);
        Rectangle2D r2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writeShape(r1, out);
            out.close();

            ByteArrayInputStream bais = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            ObjectInputStream in = new ObjectInputStream(bais);
            r2 = (Rectangle2D) SerialUtilities.readShape(in);
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertTrue(ShapeUtilities.equal(r1, r2));
    }
    
    /**
     * Serialize an <code>Arc2D.Float</code> instance and check that it 
     * can be deserialized correctly.
     */
    public void testArc2DFloatSerialization() {
        Arc2D a1 = new Arc2D.Float(
            1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, Arc2D.PIE
        );
        Arc2D a2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writeShape(a1, out);
            out.close();

            ByteArrayInputStream bais = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            ObjectInputStream in = new ObjectInputStream(bais);
            a2 = (Arc2D) SerialUtilities.readShape(in);
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertTrue(ShapeUtilities.equal(a1, a2));
    }

    /**
     * Serialize an <code>Arc2D.Double</code> instance and check that it 
     * can be deserialized correctly.
     */
    public void testArc2DDoubleSerialization() {
        Arc2D a1 = new Arc2D.Double(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, Arc2D.PIE);
        Arc2D a2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writeShape(a1, out);
            out.close();

            ByteArrayInputStream bais = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            ObjectInputStream in = new ObjectInputStream(bais);
            a2 = (Arc2D) SerialUtilities.readShape(in);
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertTrue(ShapeUtilities.equal(a1, a2));
    }
    
    /**
     * Some checks for the serialization of a GeneralPath instance.
     */
    public void testGeneralPathSerialization() {
        GeneralPath g1 = new GeneralPath();
        g1.moveTo(1.0f, 2.0f);
        g1.lineTo(3.0f, 4.0f);
        g1.curveTo(5.0f, 6.0f, 7.0f, 8.0f, 9.0f, 10.0f);
        g1.quadTo(1.0f, 2.0f, 3.0f, 4.0f);
        g1.closePath();
        GeneralPath g2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(buffer);
            SerialUtilities.writeShape(g1, out);
            out.close();

            ByteArrayInputStream bais = new ByteArrayInputStream(
                buffer.toByteArray()
            );
            ObjectInputStream in = new ObjectInputStream(bais);
            g2 = (GeneralPath) SerialUtilities.readShape(in);
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertTrue(ShapeUtilities.equal(g1, g2));
  
    }
}