/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2022, by David Gilbert 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.
 *
 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
 * Other names may be trademarks of their respective owners.]
 *
 * ------------------------------
 * BoxAndWhiskerRendererTest.java
 * ------------------------------
 * (C) Copyright 2003-2022, by David Gilbert and Contributors.
 *
 * Original Author:  David Gilbert;
 * Contributor(s):   -;
 *
 */

package org.jfree.chart.renderer.category;

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.List;

import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.legend.LegendItem;
import org.jfree.chart.TestUtils;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.internal.CloneUtils;
import org.jfree.chart.api.PublicCloneable;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.statistics.BoxAndWhiskerItem;
import org.jfree.data.statistics.DefaultBoxAndWhiskerCategoryDataset;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.*;

/**
 * Tests for the {@link BoxAndWhiskerRenderer} class.
 */
public class BoxAndWhiskerRendererTest {

    /**
     * Test that the equals() method distinguishes all fields.
     */
    @Test
    public void testEquals() {
        BoxAndWhiskerRenderer r1 = new BoxAndWhiskerRenderer();
        BoxAndWhiskerRenderer r2 = new BoxAndWhiskerRenderer();
        assertEquals(r1, r2);

        r1.setArtifactPaint(new GradientPaint(1.0f, 2.0f, Color.YELLOW,
                3.0f, 4.0f, Color.BLUE));
        assertNotEquals(r1, r2);
        r2.setArtifactPaint(new GradientPaint(1.0f, 2.0f, Color.YELLOW,
                3.0f, 4.0f, Color.BLUE));
        assertEquals(r1, r2);

        r1.setFillBox(!r1.getFillBox());
        assertNotEquals(r1, r2);
        r2.setFillBox(!r2.getFillBox());
        assertEquals(r1, r2);

        r1.setItemMargin(0.11);
        assertNotEquals(r1, r2);
        r2.setItemMargin(0.11);
        assertEquals(r1, r2);

        r1.setMaximumBarWidth(0.99);
        assertNotEquals(r1, r2);
        r2.setMaximumBarWidth(0.99);
        assertEquals(r1, r2);

        r1.setMeanVisible(false);
        assertNotEquals(r1, r2);
        r2.setMeanVisible(false);
        assertEquals(r1, r2);

        r1.setMedianVisible(false);
        assertNotEquals(r1, r2);
        r2.setMedianVisible(false);
        assertEquals(r1, r2);

        r1.setMinOutlierVisible(false);
        assertNotEquals(r1, r2);
        r2.setMinOutlierVisible(false);
        assertEquals(r1, r2);

        r1.setMaxOutlierVisible(false);
        assertNotEquals(r1, r2);
        r2.setMaxOutlierVisible(false);
        assertEquals(r1, r2);
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    @Test
    public void testHashcode() {
        BoxAndWhiskerRenderer r1 = new BoxAndWhiskerRenderer();
        BoxAndWhiskerRenderer r2 = new BoxAndWhiskerRenderer();
        assertEquals(r1, r2);
        int h1 = r1.hashCode();
        int h2 = r2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     * 
     * @throws java.lang.CloneNotSupportedException
     */
    @Test
    public void testCloning() throws CloneNotSupportedException {
        BoxAndWhiskerRenderer r1 = new BoxAndWhiskerRenderer();
        BoxAndWhiskerRenderer r2 = CloneUtils.clone(r1);
        assertNotSame(r1, r2);
        assertSame(r1.getClass(), r2.getClass());
        assertEquals(r1, r2);
        TestUtils.checkIndependence(r1, r2);
    }

    /**
     * Check that this class implements PublicCloneable.
     */
    @Test
    public void testPublicCloneable() {
        BoxAndWhiskerRenderer r1 = new BoxAndWhiskerRenderer();
        assertTrue(r1 instanceof PublicCloneable);
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    @Test
    public void testSerialization() {
        BoxAndWhiskerRenderer r1 = new BoxAndWhiskerRenderer();
        r1.setArtifactPaint(new GradientPaint(1.0f, 2.0f, Color.RED, 3.0f, 4.0f, Color.BLUE));
        BoxAndWhiskerRenderer r2 = TestUtils.serialised(r1);
        assertEquals(r1, r2);
        TestUtils.checkIndependence(r1, r2);
    }

    /**
     * Draws the chart with a {@code null} info object to make sure that
     * no exceptions are thrown (particularly by code in the renderer).
     */
    @Test
    public void testDrawWithNullInfo() {
        try {
            DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                = new DefaultBoxAndWhiskerCategoryDataset<>();
            dataset.add(new BoxAndWhiskerItem(1.0, 2.0, 0.0, 4.0, 0.5,
                    4.5, -0.5, 5.5, null), "S1", "C1");
            CategoryPlot<String, String> plot = new CategoryPlot<>(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    null);
        }
        catch (NullPointerException e) {
            fail("No exception should be thrown.");
        }
    }

    /**
     * A check for bug 1572478 (for the vertical orientation).
     */
    @Test
    public void testBug1572478Vertical() {
        DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                = new DefaultBoxAndWhiskerCategoryDataset<>() {

            @Override
            public Number getQ1Value(int row, int column) {
                return null;
            }

            @Override
            public Number getQ1Value(String rowKey, String columnKey) {
                return null;
            }
        };
        List<Double> values = new ArrayList<>();
        values.add(1.0);
        values.add(10.0);
        values.add(100.0);
        dataset.add(values, "row", "column");
        CategoryPlot<String, String> plot = new CategoryPlot<>(dataset, new CategoryAxis("x"),
                new NumberAxis("y"), new BoxAndWhiskerRenderer());
        JFreeChart chart = new JFreeChart(plot);
        boolean success;

        try {
            BufferedImage image = new BufferedImage(200 , 100,
                    BufferedImage.TYPE_INT_RGB);
            Graphics2D g2 = image.createGraphics();
            chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null,
                    new ChartRenderingInfo());
            g2.dispose();
            success = true;
        }
        catch (Exception e) {
            success = false;
        }

        assertTrue(success);

    }

    /**
     * A check for bug 1572478 (for the horizontal orientation).
     */
    @Test
    public void testBug1572478Horizontal() {
        var dataset = new DefaultBoxAndWhiskerCategoryDataset<String, String>() {

            @Override
            public Number getQ1Value(int row, int column) {
                return null;
            }

            @Override
            public Number getQ1Value(String rowKey, String columnKey) {
                return null;
            }
        };
        List<Double> values = new ArrayList<>();
        values.add(1.0);
        values.add(10.0);
        values.add(100.0);
        dataset.add(values, "row", "column");
        CategoryPlot<String, String> plot = new CategoryPlot<>(dataset, new CategoryAxis("x"),
                new NumberAxis("y"), new BoxAndWhiskerRenderer());
        plot.setOrientation(PlotOrientation.HORIZONTAL);
        JFreeChart chart = new JFreeChart(plot);
        boolean success;

        try {
            BufferedImage image = new BufferedImage(200 , 100,
                    BufferedImage.TYPE_INT_RGB);
            Graphics2D g2 = image.createGraphics();
            chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null,
                    new ChartRenderingInfo());
            g2.dispose();
            success = true;
        }
        catch (Exception e) {
            success = false;
        }

        assertTrue(success);

    }

    /**
     * Some checks for the getLegendItem() method.
     */
    @Test
    public void testGetLegendItem() {
        DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                = new DefaultBoxAndWhiskerCategoryDataset<>();
        List<Double> values = new ArrayList<>();
        values.add(1.10);
        values.add(1.45);
        values.add(1.33);
        values.add(1.23);
        dataset.add(values, "R1", "C1");
        BoxAndWhiskerRenderer r = new BoxAndWhiskerRenderer();
        CategoryPlot<String, String> plot = new CategoryPlot<>(dataset, new CategoryAxis("x"),
                new NumberAxis("y"), r);
        /*JFreeChart chart =*/ new JFreeChart(plot);
        LegendItem li = r.getLegendItem(0, 0);
        assertNotNull(li);
        r.setSeriesVisibleInLegend(0, Boolean.FALSE);
        li = r.getLegendItem(0, 0);
        assertNull(li);
    }

    /**
     * A check for the datasetIndex and seriesIndex fields in the LegendItem
     * returned by the getLegendItem() method.
     */
    @Test
    public void testGetLegendItemSeriesIndex() {
        DefaultCategoryDataset<String, String> dataset0 = new DefaultCategoryDataset<>();
        dataset0.addValue(21.0, "R1", "C1");
        dataset0.addValue(22.0, "R2", "C1");
        DefaultCategoryDataset<String, String> dataset1 = new DefaultCategoryDataset<>();
        dataset1.addValue(23.0, "R3", "C1");
        dataset1.addValue(24.0, "R4", "C1");
        dataset1.addValue(25.0, "R5", "C1");
        BoxAndWhiskerRenderer r = new BoxAndWhiskerRenderer();
        CategoryPlot<String, String> plot = new CategoryPlot<>(dataset0, new CategoryAxis("x"),
                new NumberAxis("y"), r);
        plot.setDataset(1, dataset1);
        /*JFreeChart chart =*/ new JFreeChart(plot);
        LegendItem li = r.getLegendItem(1, 2);
        assertEquals("R5", li.getLabel());
        assertEquals(1, li.getDatasetIndex());
        assertEquals(2, li.getSeriesIndex());
    }

    /**
     * Draws a chart where the dataset contains a null mean value.
     */
    @Test
    public void testDrawWithNullMean() {
        boolean success;
        try {
            DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                    = new DefaultBoxAndWhiskerCategoryDataset<>();
            dataset.add(new BoxAndWhiskerItem(null, 2.0, 0.0, 4.0, 0.5, 4.5, 
                    -0.5, 5.5, null), "S1", "C1");
            CategoryPlot<String, String> plot = new CategoryPlot<>(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null median value.
     */
    @Test
    public void testDrawWithNullMedian() {
        boolean success;
        try {
            DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                    = new DefaultBoxAndWhiskerCategoryDataset<>();
            dataset.add(new BoxAndWhiskerItem(1.0, null, 0.0, 4.0, 0.5, 4.5, 
                    -0.5, 5.5, null), "S1", "C1");
            CategoryPlot<String, String> plot = new CategoryPlot<>(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null Q1 value.
     */
    @Test
    public void testDrawWithNullQ1() {
        boolean success;
        try {
            DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                    = new DefaultBoxAndWhiskerCategoryDataset<>();
            dataset.add(new BoxAndWhiskerItem(1.0, 2.0, null, 4.0, 0.5, 4.5, 
                    -0.5, 5.5, null), "S1", "C1");
            CategoryPlot<String, String> plot = new CategoryPlot<>(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null Q3 value.
     */
    @Test
    public void testDrawWithNullQ3() {
        boolean success;
        try {
            DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                    = new DefaultBoxAndWhiskerCategoryDataset<>();
            dataset.add(new BoxAndWhiskerItem(1.0, 2.0, 3.0, null, 0.5, 4.5, 
                    -0.5, 5.5, null), "S1", "C1");
            CategoryPlot<String, String> plot = new CategoryPlot<>(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null min regular value.
     */
    @Test
    public void testDrawWithNullMinRegular() {
        boolean success;
        try {
            DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                    = new DefaultBoxAndWhiskerCategoryDataset<>();
            dataset.add(new BoxAndWhiskerItem(1.0, 2.0, 3.0, 4.0, null, 4.5, 
                    -0.5, 5.5, null), "S1", "C1");
            CategoryPlot<String, String> plot = new CategoryPlot<>(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null max regular value.
     */
    @Test
    public void testDrawWithNullMaxRegular() {
        try {
            DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                    = new DefaultBoxAndWhiskerCategoryDataset<>();
            dataset.add(new BoxAndWhiskerItem(1.0, 2.0, 3.0, 4.0, 0.5, null, 
                    -0.5, 5.5, null), "S1", "C1");
            CategoryPlot<String, String> plot = new CategoryPlot<>(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
        }
        catch (Exception e) {
            fail("No exception should be thrown.");
        }
    }

    /**
     * Draws a chart where the dataset contains a null min outlier value.
     */
    @Test
    public void testDrawWithNullMinOutlier() {
        boolean success;
        try {
            DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                    = new DefaultBoxAndWhiskerCategoryDataset<>();
            dataset.add(new BoxAndWhiskerItem(1.0, 2.0, 3.0, 4.0, 0.5, 4.5, 
                    null, 5.5, null), "S1", "C1");
            CategoryPlot<String, String> plot = new CategoryPlot<>(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null max outlier value.
     */
    @Test
    public void testDrawWithNullMaxOutlier() {
        boolean success;
        try {
            DefaultBoxAndWhiskerCategoryDataset<String, String> dataset
                    = new DefaultBoxAndWhiskerCategoryDataset<>();
            dataset.add(new BoxAndWhiskerItem(1.0, 2.0, 3.0, 4.0, 0.5, 4.5, -0.5, 
                    null, new ArrayList<>()), "S1", "C1");
            CategoryPlot<String, String> plot = new CategoryPlot<>(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

}
