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.] * * --------------------------- * SimpleHistogramBinTest.java * --------------------------- * (C) Copyright 2005-2013, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 10-Jan-2005 : Version 1 (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 org.jfree.chart.TestUtilities; import org.junit.Test; /** * Tests for the {@link SimpleHistogramBin} class. */ public class SimpleHistogramBinTest { /** * Some checks for the accepts() method. */ @Test public void testAccepts() { SimpleHistogramBin bin1 = new SimpleHistogramBin(1.0, 2.0); assertFalse(bin1.accepts(0.0)); assertTrue(bin1.accepts(1.0)); assertTrue(bin1.accepts(1.5)); assertTrue(bin1.accepts(2.0)); assertFalse(bin1.accepts(2.1)); assertFalse(bin1.accepts(Double.NaN)); SimpleHistogramBin bin2 = new SimpleHistogramBin(1.0, 2.0, false, false); assertFalse(bin2.accepts(0.0)); assertFalse(bin2.accepts(1.0)); assertTrue(bin2.accepts(1.5)); assertFalse(bin2.accepts(2.0)); assertFalse(bin2.accepts(2.1)); assertFalse(bin2.accepts(Double.NaN)); } /** * Some checks for the overlapsWith() method. */ @Test public void testOverlapsWidth() { SimpleHistogramBin b1 = new SimpleHistogramBin(1.0, 2.0); SimpleHistogramBin b2 = new SimpleHistogramBin(2.0, 3.0); SimpleHistogramBin b3 = new SimpleHistogramBin(3.0, 4.0); SimpleHistogramBin b4 = new SimpleHistogramBin(0.0, 5.0); SimpleHistogramBin b5 = new SimpleHistogramBin(2.0, 3.0, false, true); SimpleHistogramBin b6 = new SimpleHistogramBin(2.0, 3.0, true, false); assertTrue(b1.overlapsWith(b2)); assertTrue(b2.overlapsWith(b1)); assertFalse(b1.overlapsWith(b3)); assertFalse(b3.overlapsWith(b1)); assertTrue(b1.overlapsWith(b4)); assertTrue(b4.overlapsWith(b1)); assertFalse(b1.overlapsWith(b5)); assertFalse(b5.overlapsWith(b1)); assertTrue(b1.overlapsWith(b6)); assertTrue(b6.overlapsWith(b1)); } /** * Ensure that the equals() method can distinguish all fields. */ @Test public void testEquals() { SimpleHistogramBin b1 = new SimpleHistogramBin(1.0, 2.0); SimpleHistogramBin b2 = new SimpleHistogramBin(1.0, 2.0); assertTrue(b1.equals(b2)); assertTrue(b2.equals(b1)); b1 = new SimpleHistogramBin(1.1, 2.0, true, true); assertFalse(b1.equals(b2)); b2 = new SimpleHistogramBin(1.1, 2.0, true, true); assertTrue(b1.equals(b2)); b1 = new SimpleHistogramBin(1.1, 2.2, true, true); assertFalse(b1.equals(b2)); b2 = new SimpleHistogramBin(1.1, 2.2, true, true); assertTrue(b1.equals(b2)); b1 = new SimpleHistogramBin(1.1, 2.2, false, true); assertFalse(b1.equals(b2)); b2 = new SimpleHistogramBin(1.1, 2.2, false, true); assertTrue(b1.equals(b2)); b1 = new SimpleHistogramBin(1.1, 2.2, false, false); assertFalse(b1.equals(b2)); b2 = new SimpleHistogramBin(1.1, 2.2, false, false); assertTrue(b1.equals(b2)); b1.setItemCount(99); assertFalse(b1.equals(b2)); b2.setItemCount(99); assertTrue(b1.equals(b2)); } /** * Some checks for the clone() method. */ @Test public void testCloning() throws CloneNotSupportedException { SimpleHistogramBin b1 = new SimpleHistogramBin(1.1, 2.2, false, true); b1.setItemCount(99); SimpleHistogramBin b2 = (SimpleHistogramBin) b1.clone(); assertTrue(b1 != b2); assertTrue(b1.getClass() == b2.getClass()); assertTrue(b1.equals(b2)); // check that clone is independent of the original b2.setItemCount(111); assertFalse(b1.equals(b2)); } /** * Serialize an instance, restore it, and check for equality. */ @Test public void testSerialization() { SimpleHistogramBin b1 = new SimpleHistogramBin(1.0, 2.0, false, true); b1.setItemCount(123); SimpleHistogramBin b2 = (SimpleHistogramBin) TestUtilities.serialised(b1); assertEquals(b1, b2); } }