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.] * * -------------------- * MillisecondTest.java * -------------------- * (C) Copyright 2002-2013, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 29-Jan-2002 : Version 1 (DG); * 17-Oct-2002 : Fixed errors reported by Checkstyle (DG); * 21-Oct-2003 : Added hashCode tests (DG); * 29-Apr-2004 : Added test for getMiddleMillisecond() method (DG); * 11-Jan-2005 : Added test for non-clonability (DG); * 05-Oct-2006 : Added some tests (DG); * 11-Jul-2007 : Fixed bad time zone assumption (DG); * */ package org.jfree.data.time; import static org.junit.Assert.assertTrue; import static org.junit.Assert.assertFalse; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertNull; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; import java.util.Locale; import java.util.TimeZone; import org.jfree.chart.TestUtilities; import org.jfree.date.MonthConstants; import org.junit.Test; /** * Tests for the {@link Millisecond} class. */ public class MillisecondTest { /** * Check that a {@link Millisecond} instance is equal to itself. * * SourceForge Bug ID: 558850. */ @Test public void testEqualsSelf() { Millisecond millisecond = new Millisecond(); assertTrue(millisecond.equals(millisecond)); } /** * Tests the equals method. */ @Test public void testEquals() { Day day1 = new Day(29, MonthConstants.MARCH, 2002); Hour hour1 = new Hour(15, day1); Minute minute1 = new Minute(15, hour1); Second second1 = new Second(34, minute1); Millisecond milli1 = new Millisecond(999, second1); Day day2 = new Day(29, MonthConstants.MARCH, 2002); Hour hour2 = new Hour(15, day2); Minute minute2 = new Minute(15, hour2); Second second2 = new Second(34, minute2); Millisecond milli2 = new Millisecond(999, second2); assertTrue(milli1.equals(milli2)); } /** * In GMT, the 4.55:59.123pm on 21 Mar 2002 is * java.util.Date(1016729759123L). Use this to check the Millisecond * constructor. */ @Test public void testDateConstructor1() { TimeZone zone = TimeZone.getTimeZone("GMT"); Locale locale = Locale.getDefault(); // locale should not matter here Millisecond m1 = new Millisecond(new Date(1016729759122L), zone, locale); Millisecond m2 = new Millisecond(new Date(1016729759123L), zone, locale); assertEquals(122, m1.getMillisecond()); assertEquals(1016729759122L, m1.getLastMillisecond(zone)); assertEquals(123, m2.getMillisecond()); assertEquals(1016729759123L, m2.getFirstMillisecond(zone)); } /** * In Tallinn, the 4.55:59.123pm on 21 Mar 2002 is * java.util.Date(1016722559123L). Use this to check the Millisecond * constructor. */ @Test public void testDateConstructor2() { TimeZone zone = TimeZone.getTimeZone("Europe/Tallinn"); Locale locale = Locale.getDefault(); // locale should not matter here Millisecond m1 = new Millisecond(new Date(1016722559122L), zone, locale); Millisecond m2 = new Millisecond(new Date(1016722559123L), zone, locale); assertEquals(122, m1.getMillisecond()); assertEquals(1016722559122L, m1.getLastMillisecond(zone)); assertEquals(123, m2.getMillisecond()); assertEquals(1016722559123L, m2.getFirstMillisecond(zone)); } /** * Serialize an instance, restore it, and check for equality. */ @Test public void testSerialization() { Millisecond m1 = new Millisecond(); Millisecond m2 = (Millisecond) TestUtilities.serialised(m1); assertEquals(m1, m2); } /** * Two objects that are equal are required to return the same hashCode. */ @Test public void testHashcode() { Millisecond m1 = new Millisecond(599, 23, 45, 7, 9, 10, 2007); Millisecond m2 = new Millisecond(599, 23, 45, 7, 9, 10, 2007); assertTrue(m1.equals(m2)); int hash1 = m1.hashCode(); int hash2 = m2.hashCode(); assertEquals(hash1, hash2); } /** * A test for bug report 943985 - the calculation for the middle * millisecond is incorrect for odd milliseconds. */ @Test public void test943985() { Millisecond ms = new Millisecond(new java.util.Date(4)); assertEquals(ms.getFirstMillisecond(), ms.getMiddleMillisecond()); assertEquals(ms.getMiddleMillisecond(), ms.getLastMillisecond()); ms = new Millisecond(new java.util.Date(5)); assertEquals(ms.getFirstMillisecond(), ms.getMiddleMillisecond()); assertEquals(ms.getMiddleMillisecond(), ms.getLastMillisecond()); } /** * The {@link Millisecond} class is immutable, so should not be * {@link Cloneable}. */ @Test public void testNotCloneable() { Millisecond m = new Millisecond(599, 23, 45, 7, 9, 10, 2007); assertFalse(m instanceof Cloneable); } /** * Some checks for the getFirstMillisecond() method. */ @Test public void testGetFirstMillisecond() { Locale saved = Locale.getDefault(); Locale.setDefault(Locale.UK); TimeZone savedZone = TimeZone.getDefault(); TimeZone.setDefault(TimeZone.getTimeZone("Europe/London")); Millisecond m = new Millisecond(500, 15, 43, 15, 1, 4, 2006); assertEquals(1143902595500L, m.getFirstMillisecond()); Locale.setDefault(saved); TimeZone.setDefault(savedZone); } /** * Some checks for the getFirstMillisecond(TimeZone) method. */ @Test public void testGetFirstMillisecondWithTimeZone() { Millisecond m = new Millisecond(500, 50, 59, 15, 1, 4, 1950); TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles"); assertEquals(-623289609500L, m.getFirstMillisecond(zone)); // try null calendar boolean pass = false; try { m.getFirstMillisecond((TimeZone) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getFirstMillisecond(TimeZone) method. */ @Test public void testGetFirstMillisecondWithCalendar() { Millisecond m = new Millisecond(500, 55, 40, 2, 15, 4, 2000); GregorianCalendar calendar = new GregorianCalendar(Locale.GERMANY); calendar.setTimeZone(TimeZone.getTimeZone("Europe/Frankfurt")); assertEquals(955766455500L, m.getFirstMillisecond(calendar)); // try null calendar boolean pass = false; try { m.getFirstMillisecond((Calendar) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getLastMillisecond() method. */ @Test public void testGetLastMillisecond() { Locale saved = Locale.getDefault(); Locale.setDefault(Locale.UK); TimeZone savedZone = TimeZone.getDefault(); TimeZone.setDefault(TimeZone.getTimeZone("Europe/London")); Millisecond m = new Millisecond(750, 1, 1, 1, 1, 1, 1970); assertEquals(61750L, m.getLastMillisecond()); Locale.setDefault(saved); TimeZone.setDefault(savedZone); } /** * Some checks for the getLastMillisecond(TimeZone) method. */ @Test public void testGetLastMillisecondWithTimeZone() { Millisecond m = new Millisecond(750, 55, 1, 2, 7, 7, 1950); TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles"); assertEquals(-614962684250L, m.getLastMillisecond(zone)); // try null calendar boolean pass = false; try { m.getLastMillisecond((TimeZone) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getLastMillisecond(TimeZone) method. */ @Test public void testGetLastMillisecondWithCalendar() { Millisecond m = new Millisecond(250, 50, 45, 21, 21, 4, 2001); GregorianCalendar calendar = new GregorianCalendar(Locale.GERMANY); calendar.setTimeZone(TimeZone.getTimeZone("Europe/Frankfurt")); assertEquals(987889550250L, m.getLastMillisecond(calendar)); // try null calendar boolean pass = false; try { m.getLastMillisecond((Calendar) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getSerialIndex() method. */ @Test public void testGetSerialIndex() { Millisecond m = new Millisecond(500, 1, 1, 1, 1, 1, 2000); assertEquals(3155850061500L, m.getSerialIndex()); m = new Millisecond(500, 1, 1, 1, 1, 1, 1900); // TODO: this must be wrong... assertEquals(176461500L, m.getSerialIndex()); } /** * Some checks for the testNext() method. */ @Test public void testNext() { Millisecond m = new Millisecond(555, 55, 30, 1, 12, 12, 2000); m = (Millisecond) m.next(); assertEquals(2000, m.getSecond().getMinute().getHour().getYear()); assertEquals(12, m.getSecond().getMinute().getHour().getMonth()); assertEquals(12, m.getSecond().getMinute().getHour().getDayOfMonth()); assertEquals(1, m.getSecond().getMinute().getHour().getHour()); assertEquals(30, m.getSecond().getMinute().getMinute()); assertEquals(55, m.getSecond().getSecond()); assertEquals(556, m.getMillisecond()); m = new Millisecond(999, 59, 59, 23, 31, 12, 9999); assertNull(m.next()); } /** * Some checks for the getStart() method. */ @Test public void testGetStart() { Locale saved = Locale.getDefault(); Locale.setDefault(Locale.ITALY); Calendar cal = Calendar.getInstance(Locale.ITALY); cal.set(2006, Calendar.JANUARY, 16, 3, 47, 55); cal.set(Calendar.MILLISECOND, 555); Millisecond m = new Millisecond(555, 55, 47, 3, 16, 1, 2006); assertEquals(cal.getTime(), m.getStart()); Locale.setDefault(saved); } /** * Some checks for the getEnd() method. */ @Test public void testGetEnd() { Locale saved = Locale.getDefault(); Locale.setDefault(Locale.ITALY); Calendar cal = Calendar.getInstance(Locale.ITALY); cal.set(2006, Calendar.JANUARY, 16, 3, 47, 55); cal.set(Calendar.MILLISECOND, 555); Millisecond m = new Millisecond(555, 55, 47, 3, 16, 1, 2006); assertEquals(cal.getTime(), m.getEnd()); Locale.setDefault(saved); } }