painttests.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 2000-2005, 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.]
 * 
 * ---------------
 * PaintTests.java
 * ---------------
 * (C) Copyright 2003-2005, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: PaintTests.java,v 1.2 2005/01/11 23:39:37 mungady Exp $
 *
 * Changes
 * -------
 * 23-Oct-2003 : Version 1 (DG);
 *
 */

package org.jfree.junit;

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Paint;
import java.awt.TexturePaint;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;

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

/**
 * Tests for the {@link Paint} interface and known subclasses.
 */
public class PaintTests extends TestCase {

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

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

    /**
     * Check that the equals() method distinguishes all fields.
     */
    public void testColorEquals() {
        final Paint p1 = new Color(0xFF, 0xEE, 0xDD);
        final Paint p2 = new Color(0xFF, 0xEE, 0xDD);
        assertEquals(p1, p2);
    }

    /**
     * Two objects that are equal are required to return the same hashCode. 
     */
    public void testColorHashcode() {
        final Paint p1 = new Color(0xFF, 0xEE, 0xDD);
        final Paint p2 = new Color(0xFF, 0xEE, 0xDD);
        assertTrue(p1.equals(p2));
        final int h1 = p1.hashCode();
        final int h2 = p2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Check that the equals() method distinguishes all fields.
     */
    public void testGradientPaintEquals() {
        final Paint p1 = new GradientPaint(10.0f, 20.0f, Color.blue, 30.0f, 40.0f, Color.red);
        final Paint p2 = new GradientPaint(10.0f, 20.0f, Color.blue, 30.0f, 40.0f, Color.red);
        assertEquals(p1, p2);
    }

    /**
     * Check that the equals() method distinguishes all fields.
     */
    public void testTexturePaintEquals() {
        final Paint p1 = new TexturePaint(
            new BufferedImage(100, 200, BufferedImage.TYPE_INT_RGB), new Rectangle2D.Double()
        );
        final Paint p2 = new TexturePaint(
            new BufferedImage(100, 200, BufferedImage.TYPE_INT_RGB), new Rectangle2D.Double()
        );
        assertEquals(p1, p2);
    }

}