Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2013, 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. * * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. * Other names may be trademarks of their respective owners.] * * -------------------------------------------- * DefaultBoxAndWhiskerCategoryDatasetTest.java * -------------------------------------------- * (C) Copyright 2004-2013, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 01-Mar-2004 : Version 1 (DG); * 17-Apr-2007 : Added a test for bug 1701822 (DG); * 28-Sep-2007 : Enhanced testClone() (DG); * 02-Oct-2007 : Added new tests (DG); * 03-Oct-2007 : Added getTestRangeBounds() and testRemove() (DG); * */ package org.jfree.data.statistics; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertTrue; import static org.junit.Assert.assertFalse; import java.util.ArrayList; import org.jfree.chart.TestUtilities; import org.jfree.data.Range; import org.jfree.data.UnknownKeyException; import org.junit.Test; /** * Tests for the {@link DefaultBoxAndWhiskerCategoryDataset} class. */ public class DefaultBoxAndWhiskerCategoryDatasetTest { /** * Confirm that the equals method can distinguish all the required fields. */ @Test public void testEquals() { DefaultBoxAndWhiskerCategoryDataset d1 = new DefaultBoxAndWhiskerCategoryDataset(); d1.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0), new Double(3.0), new Double(4.0), new Double(5.0), new Double(6.0), new Double(7.0), new Double(8.0), new ArrayList()), "ROW1", "COLUMN1"); DefaultBoxAndWhiskerCategoryDataset d2 = new DefaultBoxAndWhiskerCategoryDataset(); d2.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0), new Double(3.0), new Double(4.0), new Double(5.0), new Double(6.0), new Double(7.0), new Double(8.0), new ArrayList()), "ROW1", "COLUMN1"); assertTrue(d1.equals(d2)); assertTrue(d2.equals(d1)); } /** * Serialize an instance, restore it, and check for equality. */ @Test public void testSerialization() { DefaultBoxAndWhiskerCategoryDataset d1 = new DefaultBoxAndWhiskerCategoryDataset(); d1.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0), new Double(3.0), new Double(4.0), new Double(5.0), new Double(6.0), new Double(7.0), new Double(8.0), new ArrayList()), "ROW1", "COLUMN1"); DefaultBoxAndWhiskerCategoryDataset d2 = (DefaultBoxAndWhiskerCategoryDataset) TestUtilities.serialised(d1); assertEquals(d1, d2); } /** * Confirm that cloning works. */ @Test public void testCloning() throws CloneNotSupportedException { DefaultBoxAndWhiskerCategoryDataset d1 = new DefaultBoxAndWhiskerCategoryDataset(); d1.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0), new Double(3.0), new Double(4.0), new Double(5.0), new Double(6.0), new Double(7.0), new Double(8.0), new ArrayList()), "ROW1", "COLUMN1"); DefaultBoxAndWhiskerCategoryDataset d2 = (DefaultBoxAndWhiskerCategoryDataset) d1.clone(); assertTrue(d1 != d2); assertTrue(d1.getClass() == d2.getClass()); assertTrue(d1.equals(d2)); // test independence d1.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0), new Double(3.0), new Double(4.0), new Double(5.0), new Double(6.0), new Double(7.0), new Double(8.0), new ArrayList()), "ROW2", "COLUMN1"); assertFalse(d1.equals(d2)); } /** * A simple test for bug report 1701822. */ @Test public void test1701822() { DefaultBoxAndWhiskerCategoryDataset dataset = new DefaultBoxAndWhiskerCategoryDataset(); try { dataset.add( new BoxAndWhiskerItem(new Double(1.0), new Double(2.0), new Double(3.0), new Double(4.0), new Double(5.0), new Double(6.0), null, new Double(8.0), new ArrayList()), "ROW1", "COLUMN1"); dataset.add( new BoxAndWhiskerItem(new Double(1.0), new Double(2.0), new Double(3.0), new Double(4.0), new Double(5.0), new Double(6.0), new Double(7.0), null, new ArrayList()), "ROW1", "COLUMN2"); } catch (NullPointerException e) { assertTrue(false); } } private static final double EPSILON = 0.0000000001; /** * Some checks for the add() method. */ @Test public void testAdd() { DefaultBoxAndWhiskerCategoryDataset dataset = new DefaultBoxAndWhiskerCategoryDataset(); BoxAndWhiskerItem item1 = new BoxAndWhiskerItem(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, new ArrayList()); dataset.add(item1, "R1", "C1"); assertEquals(2.0, dataset.getValue("R1", "C1").doubleValue(), EPSILON); assertEquals(1.0, dataset.getMeanValue("R1", "C1").doubleValue(), EPSILON); assertEquals(2.0, dataset.getMedianValue("R1", "C1").doubleValue(), EPSILON); assertEquals(3.0, dataset.getQ1Value("R1", "C1").doubleValue(), EPSILON); assertEquals(4.0, dataset.getQ3Value("R1", "C1").doubleValue(), EPSILON); assertEquals(5.0, dataset.getMinRegularValue("R1", "C1").doubleValue(), EPSILON); assertEquals(6.0, dataset.getMaxRegularValue("R1", "C1").doubleValue(), EPSILON); assertEquals(7.0, dataset.getMinOutlier("R1", "C1").doubleValue(), EPSILON); assertEquals(8.0, dataset.getMaxOutlier("R1", "C1").doubleValue(), EPSILON); assertEquals(new Range(7.0, 8.0), dataset.getRangeBounds(false)); } /** * Some checks for the add() method. */ @Test public void testAddUpdatesCachedRange() { DefaultBoxAndWhiskerCategoryDataset dataset = new DefaultBoxAndWhiskerCategoryDataset(); BoxAndWhiskerItem item1 = new BoxAndWhiskerItem(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, new ArrayList()); dataset.add(item1, "R1", "C1"); // now overwrite this item with another BoxAndWhiskerItem item2 = new BoxAndWhiskerItem(1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, new ArrayList()); dataset.add(item2, "R1", "C1"); assertEquals(2.5, dataset.getValue("R1", "C1").doubleValue(), EPSILON); assertEquals(1.5, dataset.getMeanValue("R1", "C1").doubleValue(), EPSILON); assertEquals(2.5, dataset.getMedianValue("R1", "C1").doubleValue(), EPSILON); assertEquals(3.5, dataset.getQ1Value("R1", "C1").doubleValue(), EPSILON); assertEquals(4.5, dataset.getQ3Value("R1", "C1").doubleValue(), EPSILON); assertEquals(5.5, dataset.getMinRegularValue("R1", "C1").doubleValue(), EPSILON); assertEquals(6.5, dataset.getMaxRegularValue("R1", "C1").doubleValue(), EPSILON); assertEquals(7.5, dataset.getMinOutlier("R1", "C1").doubleValue(), EPSILON); assertEquals(8.5, dataset.getMaxOutlier("R1", "C1").doubleValue(), EPSILON); assertEquals(new Range(7.5, 8.5), dataset.getRangeBounds(false)); } /** * Some basic checks for the constructor. */ @Test public void testConstructor() { DefaultBoxAndWhiskerCategoryDataset dataset = new DefaultBoxAndWhiskerCategoryDataset(); assertEquals(0, dataset.getColumnCount()); assertEquals(0, dataset.getRowCount()); assertTrue(Double.isNaN(dataset.getRangeLowerBound(false))); assertTrue(Double.isNaN(dataset.getRangeUpperBound(false))); } /** * Some checks for the getRangeBounds() method. */ @Test public void testGetRangeBounds() { DefaultBoxAndWhiskerCategoryDataset d1 = new DefaultBoxAndWhiskerCategoryDataset(); d1.add(new BoxAndWhiskerItem(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, new ArrayList()), "R1", "C1"); assertEquals(new Range(7.0, 8.0), d1.getRangeBounds(false)); assertEquals(new Range(7.0, 8.0), d1.getRangeBounds(true)); d1.add(new BoxAndWhiskerItem(1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, new ArrayList()), "R1", "C1"); assertEquals(new Range(7.5, 8.5), d1.getRangeBounds(false)); assertEquals(new Range(7.5, 8.5), d1.getRangeBounds(true)); d1.add(new BoxAndWhiskerItem(2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5, new ArrayList()), "R2", "C1"); assertEquals(new Range(7.5, 9.5), d1.getRangeBounds(false)); assertEquals(new Range(7.5, 9.5), d1.getRangeBounds(true)); // this replaces the entry with the current minimum value, but the new // minimum value is now in a different item d1.add(new BoxAndWhiskerItem(1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 8.6, 9.6, new ArrayList()), "R1", "C1"); assertEquals(new Range(8.5, 9.6), d1.getRangeBounds(false)); assertEquals(new Range(8.5, 9.6), d1.getRangeBounds(true)); } /** * Some checks for the remove method. */ @Test public void testRemove() { DefaultBoxAndWhiskerCategoryDataset data = new DefaultBoxAndWhiskerCategoryDataset(); boolean pass = false; try { data.remove("R1", "R2"); } catch (UnknownKeyException e) { pass = true; } assertTrue(pass); data.add(new BoxAndWhiskerItem(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, new ArrayList()), "R1", "C1"); assertEquals(new Range(7.0, 8.0), data.getRangeBounds(false)); assertEquals(new Range(7.0, 8.0), data.getRangeBounds(true)); data.add(new BoxAndWhiskerItem(2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5, new ArrayList()), "R2", "C1"); assertEquals(new Range(7.0, 9.5), data.getRangeBounds(false)); assertEquals(new Range(7.0, 9.5), data.getRangeBounds(true)); data.remove("R1", "C1"); assertEquals(new Range(8.5, 9.5), data.getRangeBounds(false)); assertEquals(new Range(8.5, 9.5), data.getRangeBounds(true)); } }