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.] * * -------------------------- * DefaultXYZDatasetTest.java * -------------------------- * (C) Copyright 2006-2013, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 12-Jul-2006 : Version 1 (DG); * 02-Nov-2006 : Added testAddSeries() method (DG); * 22-Apr-2008 : Added testPublicCloneable (DG); * */ package org.jfree.data.xy; import static org.junit.Assert.assertTrue; import static org.junit.Assert.assertFalse; import static org.junit.Assert.assertEquals; import org.jfree.chart.TestUtilities; import org.jfree.util.PublicCloneable; import org.junit.Test; /** * Tests for {@link DefaultXYZDataset}. */ public class DefaultXYZDatasetTest { /** * Confirm that the equals method can distinguish all the required fields. */ @Test public void testEquals() { DefaultXYZDataset d1 = new DefaultXYZDataset(); DefaultXYZDataset d2 = new DefaultXYZDataset(); assertTrue(d1.equals(d2)); assertTrue(d2.equals(d1)); double[] x1 = new double[] { 1.0, 2.0, 3.0 }; double[] y1 = new double[] { 4.0, 5.0, 6.0 }; double[] z1 = new double[] { 7.0, 8.0, 9.0 }; double[][] data1 = new double[][] { x1, y1, z1 }; double[] x2 = new double[] { 1.0, 2.0, 3.0 }; double[] y2 = new double[] { 4.0, 5.0, 6.0 }; double[] z2 = new double[] { 7.0, 8.0, 9.0 }; double[][] data2 = new double[][] { x2, y2, z2 }; d1.addSeries("S1", data1); assertFalse(d1.equals(d2)); d2.addSeries("S1", data2); assertTrue(d1.equals(d2)); } /** * Confirm that cloning works. */ @Test public void testCloning() throws CloneNotSupportedException { DefaultXYZDataset d1 = new DefaultXYZDataset(); DefaultXYZDataset d2 = (DefaultXYZDataset) d1.clone(); assertTrue(d1 != d2); assertTrue(d1.getClass() == d2.getClass()); assertTrue(d1.equals(d2)); // try a dataset with some content... double[] x1 = new double[] { 1.0, 2.0, 3.0 }; double[] y1 = new double[] { 4.0, 5.0, 6.0 }; double[] z1 = new double[] { 7.0, 8.0, 9.0 }; double[][] data1 = new double[][] { x1, y1, z1 }; d1.addSeries("S1", data1); d2 = (DefaultXYZDataset) d1.clone(); assertTrue(d1 != d2); assertTrue(d1.getClass() == d2.getClass()); assertTrue(d1.equals(d2)); // check that the clone doesn't share the same underlying arrays. x1[1] = 2.2; assertFalse(d1.equals(d2)); x1[1] = 2.0; assertTrue(d1.equals(d2)); } /** * Verify that this class implements {@link PublicCloneable}. */ @Test public void testPublicCloneable() { DefaultXYZDataset d1 = new DefaultXYZDataset(); assertTrue(d1 instanceof PublicCloneable); } /** * Serialize an instance, restore it, and check for equality. */ @Test public void testSerialization() { DefaultXYZDataset d1 = new DefaultXYZDataset(); DefaultXYZDataset d2 = (DefaultXYZDataset) TestUtilities.serialised(d1); assertEquals(d1, d2); // try a dataset with some content... double[] x1 = new double[] { 1.0, 2.0, 3.0 }; double[] y1 = new double[] { 4.0, 5.0, 6.0 }; double[] z1 = new double[] { 7.0, 8.0, 9.0 }; double[][] data1 = new double[][] { x1, y1, z1 }; d1.addSeries("S1", data1); d2 = (DefaultXYZDataset) TestUtilities.serialised(d1); assertEquals(d1, d2); } /** * Some checks for the getSeriesKey(int) method. */ @Test public void testGetSeriesKey() { DefaultXYZDataset d = createSampleDataset1(); assertEquals("S1", d.getSeriesKey(0)); assertEquals("S2", d.getSeriesKey(1)); // check for series key out of bounds boolean pass = false; try { /*Comparable k =*/ d.getSeriesKey(-1); } catch (IllegalArgumentException e) { pass = true; } assertTrue(pass); pass = false; try { /*Comparable k =*/ d.getSeriesKey(2); } catch (IllegalArgumentException e) { pass = true; } assertTrue(pass); } /** * Some checks for the indexOf(Comparable) method. */ @Test public void testIndexOf() { DefaultXYZDataset d = createSampleDataset1(); assertEquals(0, d.indexOf("S1")); assertEquals(1, d.indexOf("S2")); assertEquals(-1, d.indexOf("Green Eggs and Ham")); assertEquals(-1, d.indexOf(null)); } static final double EPSILON = 0.0000000001; /** * Some tests for the addSeries() method. */ @Test public void testAddSeries() { DefaultXYZDataset d = new DefaultXYZDataset(); d.addSeries("S1", new double[][] { { 1.0 }, { 2.0 }, { 3.0 } }); assertEquals(1, d.getSeriesCount()); assertEquals("S1", d.getSeriesKey(0)); // check that adding a series will overwrite the old series d.addSeries("S1", new double[][] { { 11.0 }, { 12.0 }, { 13.0 } }); assertEquals(1, d.getSeriesCount()); assertEquals(12.0, d.getYValue(0, 0), EPSILON); // check null key boolean pass = false; try { d.addSeries(null, new double[][] { { 1.0 }, { 2.0 }, { 3.0 } }); } catch (IllegalArgumentException e) { pass = true; } assertTrue(pass); } /** * Creates a sample dataset for testing. * * @return A sample dataset. */ public DefaultXYZDataset createSampleDataset1() { DefaultXYZDataset d = new DefaultXYZDataset(); double[] x1 = new double[] { 1.0, 2.0, 3.0 }; double[] y1 = new double[] { 4.0, 5.0, 6.0 }; double[] z1 = new double[] { 7.0, 8.0, 9.0 }; double[][] data1 = new double[][] { x1, y1, z1 }; d.addSeries("S1", data1); double[] x2 = new double[] { 1.0, 2.0, 3.0 }; double[] y2 = new double[] { 4.0, 5.0, 6.0 }; double[] z2 = new double[] { 7.0, 8.0, 9.0 }; double[][] data2 = new double[][] { x2, y2, z2 }; d.addSeries("S2", data2); return d; } }