Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2012, 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.] * * ---------------------------- * DefaultWindDatasetTests.java * ---------------------------- * (C) Copyright 2006-2008, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 12-Jul-2006 : Version 1 (DG); * 22-Apr-2008 : Added testPublicCloneable (DG); * */ package org.jfree.data.xy.junit; 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.util.PublicCloneable; import org.jfree.data.time.Day; import org.jfree.data.time.RegularTimePeriod; import org.jfree.data.xy.DefaultWindDataset; /** * Tests for {@link DefaultWindDataset}. */ public class DefaultWindDatasetTest extends TestCase { /** * Returns the tests as a test suite. * * @return The test suite. */ public static Test suite() { return new TestSuite(DefaultWindDatasetTest.class); } /** * Constructs a new set of tests. * * @param name the name of the tests. */ public DefaultWindDatasetTest(String name) { super(name); } /** * Confirm that the equals method can distinguish all the required fields. */ public void testEquals() { DefaultWindDataset d1 = new DefaultWindDataset(); DefaultWindDataset d2 = new DefaultWindDataset(); assertTrue(d1.equals(d2)); assertTrue(d2.equals(d1)); d1 = createSampleDataset1(); assertFalse(d1.equals(d2)); d2 = createSampleDataset1(); assertTrue(d1.equals(d2)); } /** * Confirm that cloning works. */ public void testCloning() { DefaultWindDataset d1 = new DefaultWindDataset(); DefaultWindDataset d2 = null; try { d2 = (DefaultWindDataset) d1.clone(); } catch (CloneNotSupportedException e) { e.printStackTrace(); } assertTrue(d1 != d2); assertTrue(d1.getClass() == d2.getClass()); assertTrue(d1.equals(d2)); // try a dataset with some content... d1 = createSampleDataset1(); d2 = null; try { d2 = (DefaultWindDataset) d1.clone(); } catch (CloneNotSupportedException e) { e.printStackTrace(); } assertTrue(d1 != d2); assertTrue(d1.getClass() == d2.getClass()); assertTrue(d1.equals(d2)); } /** * Verify that this class implements {@link PublicCloneable}. */ public void testPublicCloneable() { DefaultWindDataset d1 = new DefaultWindDataset(); assertTrue(d1 instanceof PublicCloneable); } /** * Serialize an instance, restore it, and check for equality. */ public void testSerialization() { DefaultWindDataset d1 = new DefaultWindDataset(); DefaultWindDataset d2 = null; try { ByteArrayOutputStream buffer = new ByteArrayOutputStream(); ObjectOutput out = new ObjectOutputStream(buffer); out.writeObject(d1); out.close(); ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray())); d2 = (DefaultWindDataset) in.readObject(); in.close(); } catch (Exception e) { e.printStackTrace(); } assertEquals(d1, d2); // try a dataset with some content... d1 = createSampleDataset1(); try { ByteArrayOutputStream buffer = new ByteArrayOutputStream(); ObjectOutput out = new ObjectOutputStream(buffer); out.writeObject(d1); out.close(); ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray())); d2 = (DefaultWindDataset) in.readObject(); in.close(); } catch (Exception e) { e.printStackTrace(); } assertEquals(d1, d2); } /** * Some checks for the getSeriesKey(int) method. */ public void testGetSeriesKey() { DefaultWindDataset d = createSampleDataset1(); assertEquals("Series 1", d.getSeriesKey(0)); assertEquals("Series 2", 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. */ public void testIndexOf() { DefaultWindDataset d = createSampleDataset1(); assertEquals(0, d.indexOf("Series 1")); assertEquals(1, d.indexOf("Series 2")); assertEquals(-1, d.indexOf("Green Eggs and Ham")); assertEquals(-1, d.indexOf(null)); } /** * Creates a sample dataset for testing. * * @return A sample dataset. */ public DefaultWindDataset createSampleDataset1() { Day t = new Day(1, 4, 2006); Object[] item1 = createItem(t, 3, 7); Object[] item2 = createItem(t.next(), 4, 8); Object[] item3 = createItem(t.next(), 5, 9); Object[][] series1 = new Object[][] { item1, item2, item3 }; Object[] item1b = createItem(t, 6, 10); Object[] item2b = createItem(t.next(), 7, 11); Object[] item3b = createItem(t.next(), 8, 12); Object[][] series2 = new Object[][] { item1b, item2b, item3b }; Object[][][] data = new Object[][][] { series1, series2 }; return new DefaultWindDataset(data); } /** * Creates an array representing one item in a series. * * @param t the time period. * @param dir the wind direction. * @param force the wind force. * * @return An array containing the specified items. */ private Object[] createItem(RegularTimePeriod t, int dir, int force) { return new Object[] { new Long(t.getMiddleMillisecond()), new Integer(dir), new Integer(force) }; } }