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.] * * ------------------------------------------ * DefaultStatisticalCategoryDatasetTest.java * ------------------------------------------ * (C) Copyright 2005-2013, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 05-Feb-2005 : Version 1 (DG); * 03-Aug-2006 : Added testGetRangeBounds() method (DG); * 28-Sep-2007 : Enhanced testCloning() method (DG); * 02-Oct-2007 : Added new bounds tests (DG); * 03-Oct-2007 : Added testRemove() method (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 static org.junit.Assert.assertNull; import static org.junit.Assert.fail; import org.jfree.chart.TestUtilities; import org.jfree.data.Range; import org.jfree.data.UnknownKeyException; import org.junit.Test; /** * Tests for the {@link DefaultStatisticalCategoryDataset} class. */ public class DefaultStatisticalCategoryDatasetTest { /** * Some checks for the getRangeBounds() method. */ @Test public void testGetRangeBounds() { DefaultStatisticalCategoryDataset d = new DefaultStatisticalCategoryDataset(); // an empty dataset should return null for bounds assertNull(d.getRangeBounds(true)); // try a dataset with a single value d.add(4.5, 1.0, "R1", "C1"); assertEquals(new Range(4.5, 4.5), d.getRangeBounds(false)); assertEquals(new Range(3.5, 5.5), d.getRangeBounds(true)); // try a dataset with two values d.add(0.5, 2.0, "R1", "C2"); assertEquals(new Range(0.5, 4.5), d.getRangeBounds(false)); assertEquals(new Range(-1.5, 5.5), d.getRangeBounds(true)); // try a Double.NaN d.add(Double.NaN, 0.0, "R1", "C3"); assertEquals(new Range(0.5, 4.5), d.getRangeBounds(false)); assertEquals(new Range(-1.5, 5.5), d.getRangeBounds(true)); // try a Double.NEGATIVE_INFINITY d.add(Double.NEGATIVE_INFINITY, 0.0, "R1", "C3"); assertEquals(new Range(Double.NEGATIVE_INFINITY, 4.5), d.getRangeBounds(false)); assertEquals(new Range(Double.NEGATIVE_INFINITY, 5.5), d.getRangeBounds(true)); // try a Double.POSITIVE_INFINITY d.add(Double.POSITIVE_INFINITY, 0.0, "R1", "C3"); assertEquals(new Range(0.5, Double.POSITIVE_INFINITY), d.getRangeBounds(false)); assertEquals(new Range(-1.5, Double.POSITIVE_INFINITY), d.getRangeBounds(true)); } /** * Confirm that the equals method can distinguish all the required fields. */ @Test public void testEquals() { DefaultStatisticalCategoryDataset d1 = new DefaultStatisticalCategoryDataset(); DefaultStatisticalCategoryDataset d2 = new DefaultStatisticalCategoryDataset(); assertTrue(d1.equals(d2)); assertTrue(d2.equals(d1)); } /** * Some checks for cloning. */ @Test public void testCloning() { DefaultStatisticalCategoryDataset d1 = new DefaultStatisticalCategoryDataset(); d1.add(1.1, 2.2, "R1", "C1"); d1.add(3.3, 4.4, "R1", "C2"); d1.add(null, new Double(5.5), "R1", "C3"); d1.add(new Double(6.6), null, "R2", "C3"); DefaultStatisticalCategoryDataset d2 = null; try { d2 = (DefaultStatisticalCategoryDataset) d1.clone(); } catch (CloneNotSupportedException e) { fail(e.toString()); } assertTrue(d1 != d2); assertTrue(d1.getClass() == d2.getClass()); assertTrue(d1.equals(d2)); // check independence d1.add(1.1, 2.2, "R3", "C1"); assertFalse(d1.equals(d2)); } /** * Check serialization of a default instance. */ @Test public void testSerialization1() { DefaultStatisticalCategoryDataset d1 = new DefaultStatisticalCategoryDataset(); d1.add(1.1, 2.2, "R1", "C1"); d1.add(3.3, 4.4, "R1", "C2"); d1.add(null, new Double(5.5), "R1", "C3"); d1.add(new Double(6.6), null, "R2", "C3"); DefaultStatisticalCategoryDataset d2 = (DefaultStatisticalCategoryDataset) TestUtilities.serialised(d1); assertEquals(d1, d2); } /** * Check serialization of a more complex instance. */ @Test public void testSerialization2() { DefaultStatisticalCategoryDataset d1 = new DefaultStatisticalCategoryDataset(); d1.add(1.2, 3.4, "Row 1", "Column 1"); DefaultStatisticalCategoryDataset d2 = (DefaultStatisticalCategoryDataset) TestUtilities.serialised(d1); assertEquals(d1, d2); } private static final double EPSILON = 0.0000000001; /** * Some checks for the add() method. */ @Test public void testAdd() { DefaultStatisticalCategoryDataset d1 = new DefaultStatisticalCategoryDataset(); d1.add(1.0, 2.0, "R1", "C1"); assertEquals(1.0, d1.getValue("R1", "C1").doubleValue(), EPSILON); assertEquals(2.0, d1.getStdDevValue("R1", "C1").doubleValue(), EPSILON); // overwrite the value d1.add(10.0, 20.0, "R1", "C1"); assertEquals(10.0, d1.getValue("R1", "C1").doubleValue(), EPSILON); assertEquals(20.0, d1.getStdDevValue("R1", "C1").doubleValue(), EPSILON); } /** * Some checks for the getRangeLowerBound() method. */ @Test public void testGetRangeLowerBound() { DefaultStatisticalCategoryDataset d1 = new DefaultStatisticalCategoryDataset(); d1.add(1.0, 2.0, "R1", "C1"); assertEquals(1.0, d1.getRangeLowerBound(false), EPSILON); assertEquals(-1.0, d1.getRangeLowerBound(true), EPSILON); } /** * Some checks for the getRangeUpperBound() method. */ @Test public void testGetRangeUpperBound() { DefaultStatisticalCategoryDataset d1 = new DefaultStatisticalCategoryDataset(); d1.add(1.0, 2.0, "R1", "C1"); assertEquals(1.0, d1.getRangeUpperBound(false), EPSILON); assertEquals(3.0, d1.getRangeUpperBound(true), EPSILON); } /** * Some checks for the getRangeBounds() method. */ @Test public void testGetRangeBounds2() { DefaultStatisticalCategoryDataset d1 = new DefaultStatisticalCategoryDataset(); d1.add(1.0, 2.0, "R1", "C1"); assertEquals(new Range(1.0, 1.0), d1.getRangeBounds(false)); assertEquals(new Range(-1.0, 3.0), d1.getRangeBounds(true)); d1.add(10.0, 20.0, "R1", "C1"); assertEquals(new Range(10.0, 10.0), d1.getRangeBounds(false)); assertEquals(new Range(-10.0, 30.0), d1.getRangeBounds(true)); } /** * Some checks for the remove method. */ @Test public void testRemove() { DefaultStatisticalCategoryDataset data = new DefaultStatisticalCategoryDataset(); boolean pass = false; try { data.remove("R1", "R2"); } catch (UnknownKeyException e) { pass = true; } assertTrue(pass); data.add(1.0, 0.5, "R1", "C1"); assertEquals(new Range(1.0, 1.0), data.getRangeBounds(false)); assertEquals(new Range(0.5, 1.5), data.getRangeBounds(true)); data.add(1.4, 0.2, "R2", "C1"); assertEquals(1.0, data.getRangeLowerBound(false), EPSILON); assertEquals(1.4, data.getRangeUpperBound(false), EPSILON); assertEquals(0.5, data.getRangeLowerBound(true), EPSILON); assertEquals(1.6, data.getRangeUpperBound(true), EPSILON); data.remove("R1", "C1"); assertEquals(1.4, data.getRangeLowerBound(false), EPSILON); assertEquals(1.4, data.getRangeUpperBound(false), EPSILON); assertEquals(1.2, data.getRangeLowerBound(true), EPSILON); assertEquals(1.6, data.getRangeUpperBound(true), EPSILON); } /** * A test for bug 3072674. */ @Test public void test3072674() { DefaultStatisticalCategoryDataset dataset = new DefaultStatisticalCategoryDataset(); dataset.add(1.0, Double.NaN, "R1", "C1"); assertEquals(1.0, dataset.getRangeLowerBound(true), EPSILON); assertEquals(1.0, dataset.getRangeUpperBound(true), EPSILON); Range r = dataset.getRangeBounds(true); assertEquals(1.0, r.getLowerBound(), EPSILON); assertEquals(1.0, r.getUpperBound(), EPSILON); } }