jfreechart example source code file (YearTests.java)

This example jfreechart source code file (YearTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - jfreechart tags/keywords

america/los_angeles, calendar, date, date, europe/frankfurt, gregoriancalendar, io, locale, locale, nullpointerexception, timeperiodformatexception, timezone, timezone, util, year, year

The jfreechart YearTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, 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.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * --------------
 * YearTests.java
 * --------------
 * (C) Copyright 2001-2008, 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.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.data.time.TimePeriodFormatException;
import org.jfree.data.time.Year;

/**
 * Tests for the {@link Year} class.
 */
public class YearTests extends TestCase {

    /**
     * Returns the tests as a test suite.
     *
     * @return The test suite.
     */
    public static Test suite() {
        return new TestSuite(YearTests.class);
    }

    /**
     * Constructs a new set of tests.
     *
     * @param name  the name of the tests.
     */
    public YearTests(String name) {
        super(name);
    }

    /**
     * Common test setup.
     */
    protected void setUp() {
        // no setup
    }

    /**
     * Check that a Year instance is equal to itself.
     *
     * SourceForge Bug ID: 558850.
     */
    public void testEqualsSelf() {
        Year year = new Year();
        assertTrue(year.equals(year));
    }

    /**
     * Tests the equals method.
     */
    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.
     */
    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.
     */
    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.
     */
    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.
     */
    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.
     */
    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.
     */
    public void test9999Next() {
        Year current = new Year(9999);
        Year next = (Year) current.next();
        assertNull(next);
    }

    /**
     * Tests the year string parser.
     */
    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.
     */
    public void testSerialization() {

        Year y1 = new Year(1999);
        Year y2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(y1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                new ByteArrayInputStream(buffer.toByteArray())
            );
            y2 = (Year) in.readObject();
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertEquals(y1, y2);

    }

    /**
     * The {@link Year} class is immutable, so should not be {@link Cloneable}.
     */
    public void testNotCloneable() {
        Year y = new Year(1999);
        assertFalse(y instanceof Cloneable);
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    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.
     */
    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.
     */
    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.
     */
    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.
     */
    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.
     */
    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.
     */
    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.
     */
    public void testGetSerialIndex() {
        Year y = new Year(2000);
        assertEquals(2000L, y.getSerialIndex());
    }

    /**
     * Some checks for the testNext() method.
     */
    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.
     */
    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.
     */
    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);
    }

}