jfreechart example source code file (HourTests.java)

This example jfreechart source code file (HourTests.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, day, day, europe/frankfurt, gregoriancalendar, hour, hour, hourtests, io, locale, locale, nullpointerexception, timezone, timezone, util

The jfreechart HourTests.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.]
 *
 * --------------
 * 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.data.time.Day;
import org.jfree.data.time.Hour;
import org.jfree.date.MonthConstants;

/**
 * Tests for the {@link Hour} class.
 */
public class HourTests extends TestCase {

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

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

    /**
     * Common test setup.
     */
    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");
        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(zone));

        assertEquals(16, h2.getHour());
        assertEquals(1014307200000L, h2.getFirstMillisecond(zone));
    }

    /**
     * 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
        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(zone));

        assertEquals(16, h2.getHour());
        assertEquals(1014267600000L, h2.getFirstMillisecond(zone));
    }

    /**
     * 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");
        assertEquals(-623293200000L, h.getFirstMillisecond(zone));

        // try null calendar
        boolean pass = false;
        try {
            h.getFirstMillisecond((TimeZone) 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");
        assertEquals(-614959200001L, h.getLastMillisecond(zone));

        // try null calendar
        boolean pass = false;
        try {
            h.getLastMillisecond((TimeZone) 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);
    }

}