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jfreechart example source code file (DayTests.java)

This example jfreechart source code file (DayTests.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

calendar, date, date, day, day, daytests, europe/london, gregoriancalendar, io, locale, locale, nullpointerexception, simpledateformat, text, timezone, timezone, util

The jfreechart DayTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2009, 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.]
 *
 * -------------
 * DayTests.java
 * -------------
 * (C) Copyright 2001-2009, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 15-Nov-2001 : Version 1 (DG);
 * 20-Mar-2002 : Added new tests for Day constructor and getStart() and
 *               getEnd() in different time zones (DG);
 * 26-Jun-2002 : Removed unnecessary imports (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);
 * 03-Oct-2006 : Added testGetSerialIndex() (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.text.ParseException;
import java.text.SimpleDateFormat;
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.Day;
import org.jfree.date.MonthConstants;

/**
 * Tests for the {@link Day} class.
 */
public class DayTests extends TestCase {

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

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

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

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

    /**
     * Tests the equals method.
     */
    public void testEquals() {
        Day day1 = new Day(29, MonthConstants.MARCH, 2002);
        Day day2 = new Day(29, MonthConstants.MARCH, 2002);
        assertTrue(day1.equals(day2));
    }

    /**
     * In GMT, the end of 29 Feb 2004 is java.util.Date(1,078,099,199,999L).
     * Use this to check the day constructor.
     */
    public void testDateConstructor1() {
        TimeZone zone = TimeZone.getTimeZone("GMT");
        Locale locale = Locale.UK;
        Day d1 = new Day(new Date(1078099199999L), zone, locale);
        Day d2 = new Day(new Date(1078099200000L), zone, locale);

        assertEquals(MonthConstants.FEBRUARY, d1.getMonth());
        assertEquals(1078099199999L, d1.getLastMillisecond(zone));

        assertEquals(MonthConstants.MARCH, d2.getMonth());
        assertEquals(1078099200000L, d2.getFirstMillisecond(zone));
    }

    /**
     * In Helsinki, the end of 29 Feb 2004 is
     * java.util.Date(1,078,091,999,999L).  Use this to check the Day
     * constructor.
     */
    public void testDateConstructor2() {
        TimeZone zone = TimeZone.getTimeZone("Europe/Helsinki");
        Locale locale = Locale.getDefault();  // locale shouldn't matter here
        Day d1 = new Day(new Date(1078091999999L), zone, locale);
        Day d2 = new Day(new Date(1078092000000L), zone, locale);

        assertEquals(MonthConstants.FEBRUARY, d1.getMonth());
        assertEquals(1078091999999L, d1.getLastMillisecond(zone));

        assertEquals(MonthConstants.MARCH, d2.getMonth());
        assertEquals(1078092000000L, d2.getFirstMillisecond(zone));
    }

    /**
     * Set up a day equal to 1 January 1900.  Request the previous day, it
     * should be null.
     */
    public void test1Jan1900Previous() {
        Day jan1st1900 = new Day(1, MonthConstants.JANUARY, 1900);
        Day previous = (Day) jan1st1900.previous();
        assertNull(previous);
    }

    /**
     * Set up a day equal to 1 January 1900.  Request the next day, it should
     * be 2 January 1900.
     */
    public void test1Jan1900Next() {
        Day jan1st1900 = new Day(1, MonthConstants.JANUARY, 1900);
        Day next = (Day) jan1st1900.next();
        assertEquals(2, next.getDayOfMonth());
    }

    /**
     * Set up a day equal to 31 December 9999.  Request the previous day, it
     * should be 30 December 9999.
     */
    public void test31Dec9999Previous() {
        Day dec31st9999 = new Day(31, MonthConstants.DECEMBER, 9999);
        Day previous = (Day) dec31st9999.previous();
        assertEquals(30, previous.getDayOfMonth());
    }

    /**
     * Set up a day equal to 31 December 9999.  Request the next day, it should
     * be null.
     */
    public void test31Dec9999Next() {
        Day dec31st9999 = new Day(31, MonthConstants.DECEMBER, 9999);
        Day next = (Day) dec31st9999.next();
        assertNull(next);
    }

    /**
     * Problem for date parsing.
     * <p>
     * This test works only correct if the short pattern of the date
     * format is "dd/MM/yyyy". If not, this test will result in a
     * false negative.
     *
     * @throws ParseException on parsing errors.
     */
    public void testParseDay() throws ParseException {
        GregorianCalendar gc = new GregorianCalendar(2001, 12, 31);
        SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy");
        Date reference = format.parse("31/12/2001");
        if (reference.equals(gc.getTime())) {
            // test 1...
            Day d = Day.parseDay("31/12/2001");
            assertEquals(37256, d.getSerialDate().toSerial());
        }

        // test 2...
        Day d = Day.parseDay("2001-12-31");
        assertEquals(37256, d.getSerialDate().toSerial());
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        Day d1 = new Day(15, 4, 2000);
        Day d2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(d1);
            out.close();

            ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
                    buffer.toByteArray()));
            d2 = (Day) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(d1, d2);
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashcode() {
        Day d1 = new Day(1, 2, 2003);
        Day d2 = new Day(1, 2, 2003);
        assertTrue(d1.equals(d2));
        int h1 = d1.hashCode();
        int h2 = d2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * The {@link Day} class is immutable, so should not be {@link Cloneable}.
     */
    public void testNotCloneable() {
        Day d = new Day(1, 2, 2003);
        assertFalse(d instanceof Cloneable);
    }

    /**
     * Some checks for the getSerialIndex() method.
     */
    public void testGetSerialIndex() {
        Day d = new Day(1, 1, 1900);
        assertEquals(2, d.getSerialIndex());
        d = new Day(15, 4, 2000);
        assertEquals(36631, d.getSerialIndex());
    }

    /**
     * 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"));
        Day d = new Day(1, 3, 1970);
        assertEquals(5094000000L, d.getFirstMillisecond());
        Locale.setDefault(saved);
        TimeZone.setDefault(savedZone);
    }

    /**
     * Some checks for the getFirstMillisecond(TimeZone) method.
     */
    public void testGetFirstMillisecondWithTimeZone() {
        Day d = new Day(26, 4, 1950);
        TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles");
        assertEquals(-621187200000L, d.getFirstMillisecond(zone));

        // try null calendar
        boolean pass = false;
        try {
            d.getFirstMillisecond((TimeZone) null);
        }
        catch (NullPointerException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Some checks for the getFirstMillisecond(TimeZone) method.
     */
    public void testGetFirstMillisecondWithCalendar() {
        Day d = new Day(1, 12, 2001);
        GregorianCalendar calendar = new GregorianCalendar(Locale.GERMANY);
        calendar.setTimeZone(TimeZone.getTimeZone("Europe/Frankfurt"));
        assertEquals(1007164800000L, d.getFirstMillisecond(calendar));

        // try null calendar
        boolean pass = false;
        try {
            d.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"));
        Day d = new Day(1, 1, 1970);
        assertEquals(82799999L, d.getLastMillisecond());
        Locale.setDefault(saved);
        TimeZone.setDefault(savedZone);
    }

    /**
     * Some checks for the getLastMillisecond(TimeZone) method.
     */
    public void testGetLastMillisecondWithTimeZone() {
        Day d = new Day(1, 2, 1950);
        TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles");
        assertEquals(-628358400001L, d.getLastMillisecond(zone));

        // try null calendar
        boolean pass = false;
        try {
            d.getLastMillisecond((TimeZone) null);
        }
        catch (NullPointerException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Some checks for the getLastMillisecond(TimeZone) method.
     */
    public void testGetLastMillisecondWithCalendar() {

        Day d = new Day(4, 5, 2001);
        Calendar calendar = Calendar.getInstance(
                TimeZone.getTimeZone("Europe/London"), Locale.UK);
        assertEquals(989017199999L, d.getLastMillisecond(calendar));

        // try null calendar
        boolean pass = false;
        try {
            d.getLastMillisecond((Calendar) null);
        }
        catch (NullPointerException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Some checks for the testNext() method.
     */
    public void testNext() {
        Day d = new Day(25, 12, 2000);
        d = (Day) d.next();
        assertEquals(2000, d.getYear());
        assertEquals(12, d.getMonth());
        assertEquals(26, d.getDayOfMonth());
        d = new Day(31, 12, 9999);
        assertNull(d.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.NOVEMBER, 3, 0, 0, 0);
        cal.set(Calendar.MILLISECOND, 0);
        Day d = new Day(3, 11, 2006);
        assertEquals(cal.getTime(), d.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(1900, Calendar.JANUARY, 1, 23, 59, 59);
        cal.set(Calendar.MILLISECOND, 999);
        Day d = new Day(1, 1, 1900);
        assertEquals(cal.getTime(), d.getEnd());
        Locale.setDefault(saved);
    }

}

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