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.] * * -------------- * HourTests.java * -------------- * (C) Copyright 2002-2009, 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); * 13-Mar-2003 : Added serialization test (DG); * 21-Oct-2003 : Added hashCode test (DG); * 11-Jan-2005 : Added test for non-clonability (DG); * 05-Oct-2006 : Added new tests (DG); * 11-Jul-2007 : Fixed bad time zone assumption (DG); * */ package org.jfree.data.time.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 java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; import java.util.Locale; import java.util.TimeZone; import junit.framework.Test; import junit.framework.TestCase; import junit.framework.TestSuite; import org.jfree.chart.date.MonthConstants; import org.jfree.data.time.Day; import org.jfree.data.time.Hour; /** * Tests for the {@link Hour} class. */ public class HourTest extends TestCase { /** * Returns the tests as a test suite. * * @return The test suite. */ public static Test suite() { return new TestSuite(HourTest.class); } /** * Constructs a new set of tests. * * @param name the name of the tests. */ public HourTest(String name) { super(name); } /** * Common test setup. */ @Override protected void setUp() { // no setup } /** * Check that an Hour instance is equal to itself. * * SourceForge Bug ID: 558850. */ public void testEqualsSelf() { Hour hour = new Hour(); assertTrue(hour.equals(hour)); } /** * Tests the equals method. */ public void testEquals() { Hour hour1 = new Hour(15, new Day(29, MonthConstants.MARCH, 2002)); Hour hour2 = new Hour(15, new Day(29, MonthConstants.MARCH, 2002)); assertTrue(hour1.equals(hour2)); } /** * In GMT, the 4pm on 21 Mar 2002 is java.util.Date(1,014,307,200,000L). * Use this to check the hour constructor. */ public void testDateConstructor1() { TimeZone zone = TimeZone.getTimeZone("GMT"); Calendar c = new GregorianCalendar(zone); Locale locale = Locale.getDefault(); // locale should not matter here Hour h1 = new Hour(new Date(1014307199999L), zone, locale); Hour h2 = new Hour(new Date(1014307200000L), zone, locale); assertEquals(15, h1.getHour()); assertEquals(1014307199999L, h1.getLastMillisecond(c)); assertEquals(16, h2.getHour()); assertEquals(1014307200000L, h2.getFirstMillisecond(c)); } /** * In Sydney, the 4pm on 21 Mar 2002 is java.util.Date(1,014,267,600,000L). * Use this to check the hour constructor. */ public void testDateConstructor2() { TimeZone zone = TimeZone.getTimeZone("Australia/Sydney"); Locale locale = Locale.getDefault(); // locale should not matter here Calendar c = new GregorianCalendar(zone); Hour h1 = new Hour(new Date(1014267599999L), zone, locale); Hour h2 = new Hour(new Date(1014267600000L), zone, locale); assertEquals(15, h1.getHour()); assertEquals(1014267599999L, h1.getLastMillisecond(c)); assertEquals(16, h2.getHour()); assertEquals(1014267600000L, h2.getFirstMillisecond(c)); } /** * Set up an hour equal to hour zero, 1 January 1900. Request the * previous hour, it should be null. */ public void testFirstHourPrevious() { Hour first = new Hour(0, new Day(1, MonthConstants.JANUARY, 1900)); Hour previous = (Hour) first.previous(); assertNull(previous); } /** * Set up an hour equal to hour zero, 1 January 1900. Request the next * hour, it should be null. */ public void testFirstHourNext() { Hour first = new Hour(0, new Day(1, MonthConstants.JANUARY, 1900)); Hour next = (Hour) first.next(); assertEquals(1, next.getHour()); assertEquals(1900, next.getYear()); } /** * Set up an hour equal to hour zero, 1 January 1900. Request the previous * hour, it should be null. */ public void testLastHourPrevious() { Hour last = new Hour(23, new Day(31, MonthConstants.DECEMBER, 9999)); Hour previous = (Hour) last.previous(); assertEquals(22, previous.getHour()); assertEquals(9999, previous.getYear()); } /** * Set up an hour equal to hour zero, 1 January 1900. Request the next * hour, it should be null. */ public void testLastHourNext() { Hour last = new Hour(23, new Day(31, MonthConstants.DECEMBER, 9999)); Hour next = (Hour) last.next(); assertNull(next); } /** * Problem for date parsing. */ public void testParseHour() { // test 1... Hour h = Hour.parseHour("2002-01-29 13"); assertEquals(13, h.getHour()); } /** * Serialize an instance, restore it, and check for equality. */ public void testSerialization() { Hour h1 = new Hour(); Hour h2 = null; try { ByteArrayOutputStream buffer = new ByteArrayOutputStream(); ObjectOutput out = new ObjectOutputStream(buffer); out.writeObject(h1); out.close(); ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray())); h2 = (Hour) in.readObject(); in.close(); } catch (Exception e) { e.printStackTrace(); } assertEquals(h1, h2); } /** * Two objects that are equal are required to return the same hashCode. */ public void testHashcode() { Hour h1 = new Hour(7, 9, 10, 1999); Hour h2 = new Hour(7, 9, 10, 1999); assertTrue(h1.equals(h2)); int hash1 = h1.hashCode(); int hash2 = h2.hashCode(); assertEquals(hash1, hash2); } /** * The {@link Hour} class is immutable, so should not be {@link Cloneable}. */ public void testNotCloneable() { Hour h = new Hour(7, 9, 10, 1999); assertFalse(h instanceof Cloneable); } /** * Some checks for the getFirstMillisecond() method. */ public void testGetFirstMillisecond() { Locale saved = Locale.getDefault(); Locale.setDefault(Locale.UK); TimeZone savedZone = TimeZone.getDefault(); TimeZone.setDefault(TimeZone.getTimeZone("Europe/London")); Hour h = new Hour(15, 1, 4, 2006); assertEquals(1143900000000L, h.getFirstMillisecond()); Locale.setDefault(saved); TimeZone.setDefault(savedZone); } /** * Some checks for the getFirstMillisecond(TimeZone) method. */ public void testGetFirstMillisecondWithTimeZone() { Hour h = new Hour(15, 1, 4, 1950); TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles"); Calendar c = new GregorianCalendar(zone); assertEquals(-623293200000L, h.getFirstMillisecond(c)); // try null calendar boolean pass = false; try { h.getFirstMillisecond((Calendar) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getFirstMillisecond(TimeZone) method. */ public void testGetFirstMillisecondWithCalendar() { Hour h = new Hour(2, 15, 4, 2000); GregorianCalendar calendar = new GregorianCalendar(Locale.GERMANY); calendar.setTimeZone(TimeZone.getTimeZone("Europe/Frankfurt")); assertEquals(955764000000L, h.getFirstMillisecond(calendar)); // try null calendar boolean pass = false; try { h.getFirstMillisecond((Calendar) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getLastMillisecond() method. */ public void testGetLastMillisecond() { Locale saved = Locale.getDefault(); Locale.setDefault(Locale.UK); TimeZone savedZone = TimeZone.getDefault(); TimeZone.setDefault(TimeZone.getTimeZone("Europe/London")); Hour h = new Hour(1, 1, 1, 1970); assertEquals(3599999L, h.getLastMillisecond()); Locale.setDefault(saved); TimeZone.setDefault(savedZone); } /** * Some checks for the getLastMillisecond(TimeZone) method. */ public void testGetLastMillisecondWithTimeZone() { Hour h = new Hour(2, 7, 7, 1950); TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles"); Calendar c = new GregorianCalendar(zone); assertEquals(-614959200001L, h.getLastMillisecond(c)); // try null calendar boolean pass = false; try { h.getLastMillisecond((Calendar) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getLastMillisecond(TimeZone) method. */ public void testGetLastMillisecondWithCalendar() { Hour h = new Hour(21, 21, 4, 2001); GregorianCalendar calendar = new GregorianCalendar(Locale.GERMANY); calendar.setTimeZone(TimeZone.getTimeZone("Europe/Frankfurt")); assertEquals(987890399999L, h.getLastMillisecond(calendar)); // try null calendar boolean pass = false; try { h.getLastMillisecond((Calendar) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getSerialIndex() method. */ public void testGetSerialIndex() { Hour h = new Hour(1, 1, 1, 2000); assertEquals(876625L, h.getSerialIndex()); h = new Hour(1, 1, 1, 1900); assertEquals(49L, h.getSerialIndex()); } /** * Some checks for the testNext() method. */ public void testNext() { Hour h = new Hour(1, 12, 12, 2000); h = (Hour) h.next(); assertEquals(2000, h.getYear()); assertEquals(12, h.getMonth()); assertEquals(12, h.getDayOfMonth()); assertEquals(2, h.getHour()); h = new Hour(23, 31, 12, 9999); assertNull(h.next()); } /** * Some checks for the getStart() method. */ public void testGetStart() { Locale saved = Locale.getDefault(); Locale.setDefault(Locale.ITALY); Calendar cal = Calendar.getInstance(Locale.ITALY); cal.set(2006, Calendar.JANUARY, 16, 3, 0, 0); cal.set(Calendar.MILLISECOND, 0); Hour h = new Hour(3, 16, 1, 2006); assertEquals(cal.getTime(), h.getStart()); Locale.setDefault(saved); } /** * Some checks for the getEnd() method. */ public void testGetEnd() { Locale saved = Locale.getDefault(); Locale.setDefault(Locale.ITALY); Calendar cal = Calendar.getInstance(Locale.ITALY); cal.set(2006, Calendar.JANUARY, 8, 1, 59, 59); cal.set(Calendar.MILLISECOND, 999); Hour h = new Hour(1, 8, 1, 2006); assertEquals(cal.getTime(), h.getEnd()); Locale.setDefault(saved); } }