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.] * * ------------- * YearTest.java * ------------- * (C) Copyright 2001-2013, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 16-Nov-2001 : Version 1 (DG); * 19-Mar-2002 : Added tests for constructor that uses java.util.Date to ensure * it is consistent with the getStart() and getEnd() methods (DG); * 17-Oct-2002 : Fixed errors reported by Checkstyle (DG); * 13-Mar-2003 : Added serialization test (DG); * 11-Jan-2005 : Added test for non-clonability (DG); * 05-Oct-2006 : Added some new 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.junit.Test; /** * Tests for the {@link Year} class. */ public class YearTest { /** * Check that a Year instance is equal to itself. * * SourceForge Bug ID: 558850. */ @Test public void testEqualsSelf() { Year year = new Year(); assertTrue(year.equals(year)); } /** * Tests the equals method. */ @Test public void testEquals() { Year year1 = new Year(2002); Year year2 = new Year(2002); assertTrue(year1.equals(year2)); year1 = new Year(1999); assertFalse(year1.equals(year2)); year2 = new Year(1999); assertTrue(year1.equals(year2)); } /** * In GMT, the end of 2001 is java.util.Date(1009843199999L). Use this to * check the year constructor. */ @Test public void testDateConstructor1() { TimeZone zone = TimeZone.getTimeZone("GMT"); Date d1 = new Date(1009843199999L); Date d2 = new Date(1009843200000L); Year y1 = new Year(d1, zone); Year y2 = new Year(d2, zone); assertEquals(2001, y1.getYear()); assertEquals(1009843199999L, y1.getLastMillisecond(zone)); assertEquals(2002, y2.getYear()); assertEquals(1009843200000L, y2.getFirstMillisecond(zone)); } /** * In Los Angeles, the end of 2001 is java.util.Date(1009871999999L). Use * this to check the year constructor. */ @Test public void testDateConstructor2() { TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles"); Year y1 = new Year(new Date(1009871999999L), zone); Year y2 = new Year(new Date(1009872000000L), zone); assertEquals(2001, y1.getYear()); assertEquals(1009871999999L, y1.getLastMillisecond(zone)); assertEquals(2002, y2.getYear()); assertEquals(1009872000000L, y2.getFirstMillisecond(zone)); } /** * Set up a year equal to 1900. Request the previous year, it should be * null. */ @Test public void testMinuss9999Previous() { Year current = new Year(-9999); Year previous = (Year) current.previous(); assertNull(previous); } /** * Set up a year equal to 1900. Request the next year, it should be 1901. */ @Test public void test1900Next() { Year current = new Year(1900); Year next = (Year) current.next(); assertEquals(1901, next.getYear()); } /** * Set up a year equal to 9999. Request the previous year, it should be * 9998. */ @Test public void test9999Previous() { Year current = new Year(9999); Year previous = (Year) current.previous(); assertEquals(9998, previous.getYear()); } /** * Set up a year equal to 9999. Request the next year, it should be null. */ @Test public void test9999Next() { Year current = new Year(9999); Year next = (Year) current.next(); assertNull(next); } /** * Tests the year string parser. */ @Test public void testParseYear() { Year year = null; // test 1... try { year = Year.parseYear("2000"); } catch (TimePeriodFormatException e) { year = new Year(1900); } assertEquals(2000, year.getYear()); // test 2... try { year = Year.parseYear(" 2001 "); } catch (TimePeriodFormatException e) { year = new Year(1900); } assertEquals(2001, year.getYear()); // test 3... try { year = Year.parseYear("99"); } catch (TimePeriodFormatException e) { year = new Year(1900); } assertEquals(99, year.getYear()); } /** * Serialize an instance, restore it, and check for equality. */ @Test public void testSerialization() { Year y1 = new Year(1999); Year y2 = (Year) TestUtilities.serialised(y1); assertEquals(y1, y2); } /** * The {@link Year} class is immutable, so should not be {@link Cloneable}. */ @Test public void testNotCloneable() { Year y = new Year(1999); assertFalse(y instanceof Cloneable); } /** * Two objects that are equal are required to return the same hashCode. */ @Test public void testHashcode() { Year y1 = new Year(1988); Year y2 = new Year(1988); assertTrue(y1.equals(y2)); int h1 = y1.hashCode(); int h2 = y2.hashCode(); assertEquals(h1, h2); } /** * 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")); Year y = new Year(1970); // TODO: Check this result... assertEquals(-3600000L, y.getFirstMillisecond()); Locale.setDefault(saved); TimeZone.setDefault(savedZone); } /** * Some checks for the getFirstMillisecond(TimeZone) method. */ @Test public void testGetFirstMillisecondWithTimeZone() { Year y = new Year(1950); TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles"); assertEquals(-631123200000L, y.getFirstMillisecond(zone)); // try null calendar boolean pass = false; try { y.getFirstMillisecond((TimeZone) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getFirstMillisecond(TimeZone) method. */ @Test public void testGetFirstMillisecondWithCalendar() { Year y = new Year(2001); GregorianCalendar calendar = new GregorianCalendar(Locale.GERMANY); calendar.setTimeZone(TimeZone.getTimeZone("Europe/Frankfurt")); assertEquals(978307200000L, y.getFirstMillisecond(calendar)); // try null calendar boolean pass = false; try { y.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")); Year y = new Year(1970); // TODO: Check this result... assertEquals(31532399999L, y.getLastMillisecond()); Locale.setDefault(saved); TimeZone.setDefault(savedZone); } /** * Some checks for the getLastMillisecond(TimeZone) method. */ @Test public void testGetLastMillisecondWithTimeZone() { Year y = new Year(1950); TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles"); assertEquals(-599587200001L, y.getLastMillisecond(zone)); // try null calendar boolean pass = false; try { y.getLastMillisecond((TimeZone) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getLastMillisecond(TimeZone) method. */ @Test public void testGetLastMillisecondWithCalendar() { Year y = new Year(2001); GregorianCalendar calendar = new GregorianCalendar(Locale.GERMANY); calendar.setTimeZone(TimeZone.getTimeZone("Europe/Frankfurt")); assertEquals(1009843199999L, y.getLastMillisecond(calendar)); // try null calendar boolean pass = false; try { y.getLastMillisecond((Calendar) null); } catch (NullPointerException e) { pass = true; } assertTrue(pass); } /** * Some checks for the getSerialIndex() method. */ @Test public void testGetSerialIndex() { Year y = new Year(2000); assertEquals(2000L, y.getSerialIndex()); } /** * Some checks for the testNext() method. */ @Test public void testNext() { Year y = new Year(2000); y = (Year) y.next(); assertEquals(2001, y.getYear()); y = new Year(9999); assertNull(y.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, 1, 0, 0, 0); cal.set(Calendar.MILLISECOND, 0); Year y = new Year(2006); assertEquals(cal.getTime(), y.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.DECEMBER, 31, 23, 59, 59); cal.set(Calendar.MILLISECOND, 999); Year y = new Year(2006); assertEquals(cal.getTime(), y.getEnd()); Locale.setDefault(saved); } }