jfreechart example source code file (LegendGraphicTests.java)

This example jfreechart source code file (LegendGraphicTests.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 - jfreechart tags/keywords

awt, bytearrayoutputstream, bytearrayoutputstream, clonenotsupportedexception, clonenotsupportedexception, geometry, io, legendgraphic, legendgraphic, legendgraphictests, objectinput, rectangle, rectangle, standardgradientpainttransformer, stroke, test, testcase

The jfreechart LegendGraphicTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/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.]
 *
 * -----------------------
 * LegendGraphicTests.java
 * -----------------------
 * (C) Copyright 2005-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 01-Sep-2005 : Version 1 (DG);
 *
 */

package org.jfree.chart.title.junit;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Rectangle;
import java.awt.Stroke;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
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.chart.title.LegendGraphic;
import org.jfree.ui.GradientPaintTransformType;
import org.jfree.ui.RectangleAnchor;
import org.jfree.ui.StandardGradientPaintTransformer;

/**
 * Tests for the {@link LegendGraphic} class.
 */
public class LegendGraphicTests extends TestCase {

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

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

    /**
     * Check that the equals() method distinguishes all fields.
     */
    public void testEquals() {
        LegendGraphic g1 = new LegendGraphic(new Rectangle2D.Double(1.0, 2.0,
                3.0, 4.0), Color.black);
        LegendGraphic g2 = new LegendGraphic(new Rectangle2D.Double(1.0, 2.0,
                3.0, 4.0), Color.black);
        assertEquals(g1, g2);
        assertEquals(g2, g1);

        // shapeVisible
        g1.setShapeVisible(!g1.isShapeVisible());
        assertFalse(g1.equals(g2));
        g2.setShapeVisible(!g2.isShapeVisible());
        assertTrue(g1.equals(g2));

        // shape
        g1.setShape(new Rectangle2D.Double(4.0, 3.0, 2.0, 1.0));
        assertFalse(g1.equals(g2));
        g2.setShape(new Rectangle2D.Double(4.0, 3.0, 2.0, 1.0));
        assertTrue(g1.equals(g2));

        // shapeFilled
        g1.setShapeFilled(!g1.isShapeFilled());
        assertFalse(g1.equals(g2));
        g2.setShapeFilled(!g2.isShapeFilled());
        assertTrue(g1.equals(g2));

        // fillPaint
        g1.setFillPaint(Color.green);
        assertFalse(g1.equals(g2));
        g2.setFillPaint(Color.green);
        assertTrue(g1.equals(g2));

        // shapeOutlineVisible
        g1.setShapeOutlineVisible(!g1.isShapeOutlineVisible());
        assertFalse(g1.equals(g2));
        g2.setShapeOutlineVisible(!g2.isShapeOutlineVisible());
        assertTrue(g1.equals(g2));

        // outlinePaint
        g1.setOutlinePaint(Color.green);
        assertFalse(g1.equals(g2));
        g2.setOutlinePaint(Color.green);
        assertTrue(g1.equals(g2));

        // outlineStroke
        g1.setOutlineStroke(new BasicStroke(1.23f));
        assertFalse(g1.equals(g2));
        g2.setOutlineStroke(new BasicStroke(1.23f));
        assertTrue(g1.equals(g2));

        // shapeAnchor
        g1.setShapeAnchor(RectangleAnchor.BOTTOM_RIGHT);
        assertFalse(g1.equals(g2));
        g2.setShapeAnchor(RectangleAnchor.BOTTOM_RIGHT);
        assertTrue(g1.equals(g2));

        // shapeLocation
        g1.setShapeLocation(RectangleAnchor.BOTTOM_RIGHT);
        assertFalse(g1.equals(g2));
        g2.setShapeLocation(RectangleAnchor.BOTTOM_RIGHT);
        assertTrue(g1.equals(g2));

        // lineVisible
        g1.setLineVisible(!g1.isLineVisible());
        assertFalse(g1.equals(g2));
        g2.setLineVisible(!g2.isLineVisible());
        assertTrue(g1.equals(g2));

        // line
        g1.setLine(new Line2D.Double(1.0, 2.0, 3.0, 4.0));
        assertFalse(g1.equals(g2));
        g2.setLine(new Line2D.Double(1.0, 2.0, 3.0, 4.0));
        assertTrue(g1.equals(g2));

        // linePaint
        g1.setLinePaint(Color.green);
        assertFalse(g1.equals(g2));
        g2.setLinePaint(Color.green);
        assertTrue(g1.equals(g2));

        // lineStroke
        g1.setLineStroke(new BasicStroke(1.23f));
        assertFalse(g1.equals(g2));
        g2.setLineStroke(new BasicStroke(1.23f));
        assertTrue(g1.equals(g2));

        // fillPaintTransformer
        g1.setFillPaintTransformer(new StandardGradientPaintTransformer(
                GradientPaintTransformType.CENTER_HORIZONTAL));
        assertFalse(g1.equals(g2));
        g2.setFillPaintTransformer(new StandardGradientPaintTransformer(
                GradientPaintTransformType.CENTER_HORIZONTAL));
        assertTrue(g1.equals(g2));

    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashcode() {
        LegendGraphic g1 = new LegendGraphic(new Rectangle2D.Double(1.0, 2.0,
                3.0, 4.0), Color.black);
        LegendGraphic g2 = new LegendGraphic(new Rectangle2D.Double(1.0, 2.0,
                3.0, 4.0), Color.black);
        assertTrue(g1.equals(g2));
        int h1 = g1.hashCode();
        int h2 = g2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        Rectangle r = new Rectangle(1, 2, 3, 4);
        LegendGraphic g1 = new LegendGraphic(r, Color.black);
        LegendGraphic g2 = null;
        try {
            g2 = (LegendGraphic) g1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(g1 != g2);
        assertTrue(g1.getClass() == g2.getClass());
        assertTrue(g1.equals(g2));

        // check independence
        r.setBounds(4, 3, 2, 1);
        assertFalse(g1.equals(g2));
    }

    /**
     * A test for cloning - checks that the line shape is cloned correctly.
     */
    public void testCloning2() {
        Rectangle r = new Rectangle(1, 2, 3, 4);
        LegendGraphic g1 = new LegendGraphic(r, Color.black);
        Line2D l = new Line2D.Double(1.0, 2.0, 3.0, 4.0);
        g1.setLine(l);
        LegendGraphic g2 = null;
        try {
            g2 = (LegendGraphic) g1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(g1 != g2);
        assertTrue(g1.getClass() == g2.getClass());
        assertTrue(g1.equals(g2));

        // check independence
        l.setLine(4.0, 3.0, 2.0, 1.0);
        assertFalse(g1.equals(g2));

    }

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

        Stroke s = new BasicStroke(1.23f);
        LegendGraphic g1 = new LegendGraphic(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0), Color.black);
        g1.setOutlineStroke(s);
        LegendGraphic g2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(g1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            g2 = (LegendGraphic) in.readObject();
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertTrue(g1.equals(g2));

    }

}