standarddialframetests.java

java图形利器

package org.jfree.experimental.chart.plot.dial.junit;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.GradientPaint;
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.experimental.chart.plot.dial.StandardDialFrame;

/**
 * Tests for the {@link StandardDialFrame} class.
 */
public class StandardDialFrameTests extends TestCase {

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

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {
        StandardDialFrame f1 = new StandardDialFrame();
        StandardDialFrame f2 = new StandardDialFrame();
        assertTrue(f1.equals(f2));
        
        // background paint
        f1.setBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.red, 
                3.0f, 4.0f, Color.yellow));
        assertFalse(f1.equals(f2));
        f2.setBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.red, 
                3.0f, 4.0f, Color.yellow));
        assertTrue(f1.equals(f2));
        
        // foreground paint
        f1.setForegroundPaint(new GradientPaint(1.0f, 2.0f, Color.red, 
                3.0f, 4.0f, Color.yellow));
        assertFalse(f1.equals(f2));
        f2.setForegroundPaint(new GradientPaint(1.0f, 2.0f, Color.red, 
                3.0f, 4.0f, Color.yellow));
        assertTrue(f1.equals(f2));
        
        // stroke
        f1.setStroke(new BasicStroke(1.1f));
        assertFalse(f1.equals(f2));
        f2.setStroke(new BasicStroke(1.1f));
        assertTrue(f1.equals(f2));
        
        // inner radius
        f1.setInnerRadius(0.11);
        assertFalse(f1.equals(f2));
        f2.setInnerRadius(0.11);
        assertTrue(f1.equals(f2));
        
        // outer radius
        f1.setOuterRadius(0.88);
        assertFalse(f1.equals(f2));
        f2.setOuterRadius(0.88);
        assertTrue(f1.equals(f2));
        
        // startAngle
        f1.setStartAngle(99);
        assertFalse(f1.equals(f2));
        f2.setStartAngle(99);
        assertTrue(f1.equals(f2));
     
        // extent
        f1.setExtent(33);
        assertFalse(f1.equals(f2));
        f2.setExtent(33);
        assertTrue(f1.equals(f2));
        
    }

    /**
     * Two objects that are equal are required to return the same hashCode. 
     */
    public void testHashCode() {
        StandardDialFrame f1 = new StandardDialFrame();
        StandardDialFrame f2 = new StandardDialFrame();
        assertTrue(f1.equals(f2));
        int h1 = f1.hashCode();
        int h2 = f2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        StandardDialFrame f1 = new StandardDialFrame();
        StandardDialFrame f2 = null;
        try {
            f2 = (StandardDialFrame) f1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(f1 != f2);
        assertTrue(f1.getClass() == f2.getClass());
        assertTrue(f1.equals(f2));
    }


    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        StandardDialFrame f1 = new StandardDialFrame();
        StandardDialFrame f2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(f1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            f2 = (StandardDialFrame) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(f1, f2);
    }

}