/* ===========================================================
 * 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.]
 *
 * ----------------------
 * CategoryAxisTests.java
 * ----------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 18-Mar-2003 : Version 1 (DG);
 * 13-Aug-2003 : Added clone() test (DG);
 * 07-Jan-2005 : Added hashCode() test (DG);
 *
 */

package org.jfree.chart.axis.junit;

import java.awt.Color;
import java.awt.Font;
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.chart.axis.CategoryAxis;
import org.jfree.chart.axis.CategoryLabelPositions;

/**
 * Tests for the {@link CategoryAxis} class.
 */
public class CategoryAxisTests extends TestCase {

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

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {

        CategoryAxis a1 = new CategoryAxis("Test");
        CategoryAxis a2 = new CategoryAxis("Test");
        assertTrue(a1.equals(a2));

        // lowerMargin
        a1.setLowerMargin(0.15);
        assertFalse(a1.equals(a2));
        a2.setLowerMargin(0.15);
        assertTrue(a1.equals(a2));

        // upperMargin
        a1.setUpperMargin(0.15);
        assertFalse(a1.equals(a2));
        a2.setUpperMargin(0.15);
        assertTrue(a1.equals(a2));

        // categoryMargin
        a1.setCategoryMargin(0.15);
        assertFalse(a1.equals(a2));
        a2.setCategoryMargin(0.15);
        assertTrue(a1.equals(a2));

        // maxCategoryLabelWidthRatio
        a1.setMaximumCategoryLabelWidthRatio(0.98f);
        assertFalse(a1.equals(a2));
        a2.setMaximumCategoryLabelWidthRatio(0.98f);
        assertTrue(a1.equals(a2));

        // categoryLabelPositionOffset
        a1.setCategoryLabelPositionOffset(11);
        assertFalse(a1.equals(a2));
        a2.setCategoryLabelPositionOffset(11);
        assertTrue(a1.equals(a2));

        // categoryLabelPositions
        a1.setCategoryLabelPositions(CategoryLabelPositions.DOWN_45);
        assertFalse(a1.equals(a2));
        a2.setCategoryLabelPositions(CategoryLabelPositions.DOWN_45);
        assertTrue(a1.equals(a2));

        // categoryLabelToolTips
        a1.addCategoryLabelToolTip("Test", "Check");
        assertFalse(a1.equals(a2));
        a2.addCategoryLabelToolTip("Test", "Check");
        assertTrue(a1.equals(a2));

        // tickLabelFont
        a1.setTickLabelFont("C1", new Font("Dialog", Font.PLAIN, 21));
        assertFalse(a1.equals(a2));
        a2.setTickLabelFont("C1", new Font("Dialog", Font.PLAIN, 21));
        assertTrue(a1.equals(a2));

        // tickLabelPaint
        a1.setTickLabelPaint("C1", Color.red);
        assertFalse(a1.equals(a2));
        a2.setTickLabelPaint("C1", Color.red);
        assertTrue(a1.equals(a2));

        // tickLabelPaint2
        a1.setTickLabelPaint("C1", new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.yellow));
        assertFalse(a1.equals(a2));
        a2.setTickLabelPaint("C1", new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.yellow));
        assertTrue(a1.equals(a2));

    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashCode() {
        CategoryAxis a1 = new CategoryAxis("Test");
        CategoryAxis a2 = new CategoryAxis("Test");
        assertTrue(a1.equals(a2));
        int h1 = a1.hashCode();
        int h2 = a2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        CategoryAxis a1 = new CategoryAxis("Test");
        CategoryAxis a2 = null;
        try {
            a2 = (CategoryAxis) a1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(a1 != a2);
        assertTrue(a1.getClass() == a2.getClass());
        assertTrue(a1.equals(a2));
    }

    /**
     * Confirm that cloning works.  This test customises the font and paint
     * per category label.
     */
    public void testCloning2() {
        CategoryAxis a1 = new CategoryAxis("Test");
        a1.setTickLabelFont("C1", new Font("Dialog", Font.PLAIN, 15));
        a1.setTickLabelPaint("C1", new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.white));
        CategoryAxis a2 = null;
        try {
            a2 = (CategoryAxis) a1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(a1 != a2);
        assertTrue(a1.getClass() == a2.getClass());
        assertTrue(a1.equals(a2));

        // check that changing a tick label font in a1 doesn't change a2
        a1.setTickLabelFont("C1", null);
        assertFalse(a1.equals(a2));
        a2.setTickLabelFont("C1", null);
        assertTrue(a1.equals(a2));

        // check that changing a tick label paint in a1 doesn't change a2
        a1.setTickLabelPaint("C1", Color.yellow);
        assertFalse(a1.equals(a2));
        a2.setTickLabelPaint("C1", Color.yellow);
        assertTrue(a1.equals(a2));

        // check that changing a category label tooltip in a1 doesn't change a2
        a1.addCategoryLabelToolTip("C1", "XYZ");
        assertFalse(a1.equals(a2));
        a2.addCategoryLabelToolTip("C1", "XYZ");
        assertTrue(a1.equals(a2));
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        CategoryAxis a1 = new CategoryAxis("Test Axis");
        a1.setTickLabelPaint("C1", new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.white));
        CategoryAxis a2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(a1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                new ByteArrayInputStream(buffer.toByteArray())
            );
            a2 = (CategoryAxis) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(a1, a2);
    }

}
