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jfreechart example source code file (WeekTests.java)

This example jfreechart source code file (WeekTests.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

bug, calendar, calendar, europe/copenhagen, gregoriancalendar, gregoriancalendar, id, io, java, locale, locale, nullpointerexception, timezone, util, week, week

The jfreechart WeekTests.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.]
 *
 * --------------
 * WeekTests.java
 * --------------
 * (C) Copyright 2002-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 05-Apr-2002 : Version 1 (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);
 * 06-Apr-2006 : Added testBug1448828() method (DG);
 * 01-Jun-2006 : Added testBug1498805() method (DG);
 * 11-Jul-2007 : Fixed bad time zone assumption (DG);
 * 28-Aug-2007 : Added test for constructor problem (DG);
 * 19-Dec-2007 : Set default locale for tests that are sensitive
 *               to the locale (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.Week;
import org.jfree.data.time.Year;

/**
 * Tests for the {@link Week} class.
 */
public class WeekTests extends TestCase {

    /** A week. */
    private Week w1Y1900;

    /** A week. */
    private Week w2Y1900;

    /** A week. */
    private Week w51Y9999;

    /** A week. */
    private Week w52Y9999;

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

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

    /**
     * Common test setup.
     */
    protected void setUp() {
        this.w1Y1900 = new Week(1, 1900);
        this.w2Y1900 = new Week(2, 1900);
        this.w51Y9999 = new Week(51, 9999);
        this.w52Y9999 = new Week(52, 9999);
    }

    /**
     * Tests the equals method.
     */
    public void testEquals() {
        Week w1 = new Week(1, 2002);
        Week w2 = new Week(1, 2002);
        assertTrue(w1.equals(w2));
        assertTrue(w2.equals(w1));

        w1 = new Week(2, 2002);
        assertFalse(w1.equals(w2));
        w2 = new Week(2, 2002);
        assertTrue(w1.equals(w2));

        w1 = new Week(2, 2003);
        assertFalse(w1.equals(w2));
        w2 = new Week(2, 2003);
        assertTrue(w1.equals(w2));
    }

    /**
     * Request the week before week 1, 1900: it should be <code>null.
     */
    public void testW1Y1900Previous() {
        Week previous = (Week) this.w1Y1900.previous();
        assertNull(previous);
    }

    /**
     * Request the week after week 1, 1900: it should be week 2, 1900.
     */
    public void testW1Y1900Next() {
        Week next = (Week) this.w1Y1900.next();
        assertEquals(this.w2Y1900, next);
    }

    /**
     * Request the week before w52, 9999: it should be week 51, 9999.
     */
    public void testW52Y9999Previous() {
        Week previous = (Week) this.w52Y9999.previous();
        assertEquals(this.w51Y9999, previous);
    }

    /**
     * Request the week after w52, 9999: it should be <code>null.
     */
    public void testW52Y9999Next() {
        Week next = (Week) this.w52Y9999.next();
        assertNull(next);
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {

        Week w1 = new Week(24, 1999);
        Week w2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(w1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            w2 = (Week) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(w1, w2);

    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashcode() {
        Week w1 = new Week(2, 2003);
        Week w2 = new Week(2, 2003);
        assertTrue(w1.equals(w2));
        int h1 = w1.hashCode();
        int h2 = w2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * The {@link Week} class is immutable, so should not be {@link Cloneable}.
     */
    public void testNotCloneable() {
        Week w = new Week(1, 1999);
        assertFalse(w instanceof Cloneable);
    }

    /**
     * The first week in 2005 should span the range:
     *
     * TimeZone         | Start Millis  | End Millis    | Start Date  | End Date
     * -----------------+---------------+---------------+-------------+------------
     * Europe/London    | 1104710400000 | 1105315199999 |  3-Jan-2005 | 9-Jan-2005
     * Europe/Paris     | 1104706800000 | 1105311599999 |  3-Jan-2005 | 2-Jan-2005
     * America/New_York | 1104037200000 | 1104641999999 | 26-Dec-2004 | 1-Jan-2005
     *
     * In London and Paris, Monday is the first day of the week, while in the
     * US it is Sunday.
     *
     * Previously, we were using these values, but see Java Bug ID 4960215:
     *
     * TimeZone         | Start Millis  | End Millis    | Start Date  | End Date
     * -----------------+---------------+---------------+-------------+------------
     * Europe/London    | 1104105600000 | 1104710399999 | 27-Dec-2004 | 2-Jan-2005
     * Europe/Paris     | 1104102000000 | 1104706799999 | 27-Dec-2004 | 2-Jan-2005
     * America/New_York | 1104037200000 | 1104641999999 | 26-Dec-2004 | 1-Jan-2005
     */
    public void testWeek12005() {
        Week w1 = new Week(1, 2005);
        Calendar c1 = Calendar.getInstance(
                TimeZone.getTimeZone("Europe/London"), Locale.UK);
        c1.setMinimalDaysInFirstWeek(4);  // see Java Bug ID 4960215
        assertEquals(1104710400000L, w1.getFirstMillisecond(c1));
        assertEquals(1105315199999L, w1.getLastMillisecond(c1));
        Calendar c2 = Calendar.getInstance(
                TimeZone.getTimeZone("Europe/Paris"), Locale.FRANCE);
        c2.setMinimalDaysInFirstWeek(4);  // see Java Bug ID 4960215
        assertEquals(1104706800000L, w1.getFirstMillisecond(c2));
        assertEquals(1105311599999L, w1.getLastMillisecond(c2));
        Calendar c3 = Calendar.getInstance(
                TimeZone.getTimeZone("America/New_York"), Locale.US);
        assertEquals(1104037200000L, w1.getFirstMillisecond(c3));
        assertEquals(1104641999999L, w1.getLastMillisecond(c3));
    }

    /**
     * The 53rd week in 2004 in London and Paris should span the range:
     *
     * TimeZone         | Start Millis  | End Millis    | Start Date  | End Date
     * -----------------+---------------+---------------+-------------+------------
     * Europe/London    | 1104105600000 | 1104710399999 | 27-Dec-2004 | 02-Jan-2005
     * Europe/Paris     | 1104102000000 | 1104706799999 | 27-Dec-2004 | 02-Jan-2005
     *
     * The 53rd week in 2005 in New York should span the range:
     *
     * TimeZone         | Start Millis  | End Millis    | Start Date  | End Date
     * -----------------+---------------+---------------+-------------+------------
     * America/New_York | 1135486800000 | 1136091599999 | 25-Dec-2005 | 31-Dec-2005
     *
     * In London and Paris, Monday is the first day of the week, while in the
     * US it is Sunday.
     */
    public void testWeek532005() {
        Week w1 = new Week(53, 2004);
        Calendar c1 = Calendar.getInstance(
                TimeZone.getTimeZone("Europe/London"), Locale.UK);
        c1.setMinimalDaysInFirstWeek(4);  // see Java Bug ID 4960215
        assertEquals(1104105600000L, w1.getFirstMillisecond(c1));
        assertEquals(1104710399999L, w1.getLastMillisecond(c1));
        Calendar c2 = Calendar.getInstance(
                TimeZone.getTimeZone("Europe/Paris"), Locale.FRANCE);
        c2.setMinimalDaysInFirstWeek(4);  // see Java Bug ID 4960215
        assertEquals(1104102000000L, w1.getFirstMillisecond(c2));
        assertEquals(1104706799999L, w1.getLastMillisecond(c2));
        w1 = new Week(53, 2005);
        Calendar c3 = Calendar.getInstance(
                TimeZone.getTimeZone("America/New_York"), Locale.US);
        assertEquals(1135486800000L, w1.getFirstMillisecond(c3));
        assertEquals(1136091599999L, w1.getLastMillisecond(c3));
    }

    /**
     * A test case for bug 1448828.
     */
    public void testBug1448828() {
        Locale saved = Locale.getDefault();
        Locale.setDefault(Locale.UK);
        try {
            Week w = new Week(new Date(1136109830000l),
                    TimeZone.getTimeZone("GMT"));
            assertEquals(2005, w.getYearValue());
            assertEquals(52, w.getWeek());
        }
        finally {
            Locale.setDefault(saved);
        }
    }

    /**
     * A test case for bug 1498805.
     */
    public void testBug1498805() {
        Locale saved = Locale.getDefault();
        Locale.setDefault(Locale.UK);
        try {
            TimeZone zone = TimeZone.getTimeZone("GMT");
            GregorianCalendar gc = new GregorianCalendar(zone);
            gc.set(2005, Calendar.JANUARY, 1, 12, 0, 0);
            Week w = new Week(gc.getTime(), zone);
            assertEquals(53, w.getWeek());
            assertEquals(new Year(2004), w.getYear());
        }
        finally {
            Locale.setDefault(saved);
        }
    }

    /**
     * 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"));
        Week w = new Week(3, 1970);
        assertEquals(946800000L, w.getFirstMillisecond());
        Locale.setDefault(saved);
        TimeZone.setDefault(savedZone);
    }

    /**
     * Some checks for the getFirstMillisecond(TimeZone) method.
     */
    public void testGetFirstMillisecondWithTimeZone() {
        Week w = new Week(47, 1950);
        Locale saved = Locale.getDefault();
        Locale.setDefault(Locale.US);
        try {
            TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles");
            assertEquals(-603302400000L, w.getFirstMillisecond(zone));
        }
        finally {
            Locale.setDefault(saved);
        }

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

    /**
     * Some checks for the getFirstMillisecond(TimeZone) method.
     */
    public void testGetFirstMillisecondWithCalendar() {
        Week w = new Week(1, 2001);
        GregorianCalendar calendar = new GregorianCalendar(Locale.GERMANY);
        calendar.setTimeZone(TimeZone.getTimeZone("Europe/Frankfurt"));
        assertEquals(978307200000L, w.getFirstMillisecond(calendar));

        // try null calendar
        boolean pass = false;
        try {
            w.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"));
        Week w = new Week(31, 1970);
        assertEquals(18485999999L, w.getLastMillisecond());
        Locale.setDefault(saved);
        TimeZone.setDefault(savedZone);
    }

    /**
     * Some checks for the getLastMillisecond(TimeZone) method.
     */
    public void testGetLastMillisecondWithTimeZone() {
        Week w = new Week(2, 1950);
        Locale saved = Locale.getDefault();
        Locale.setDefault(Locale.US);
        try {
            TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles");
            assertEquals(-629913600001L, w.getLastMillisecond(zone));
        }
        finally {
            Locale.setDefault(saved);
        }

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

    /**
     * Some checks for the getLastMillisecond(TimeZone) method.
     */
    public void testGetLastMillisecondWithCalendar() {
        Week w = new Week(52, 2001);
        GregorianCalendar calendar = new GregorianCalendar(Locale.GERMANY);
        calendar.setTimeZone(TimeZone.getTimeZone("Europe/Frankfurt"));
        assertEquals(1009756799999L, w.getLastMillisecond(calendar));

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

    /**
     * Some checks for the getSerialIndex() method.
     */
    public void testGetSerialIndex() {
        Week w = new Week(1, 2000);
        assertEquals(106001L, w.getSerialIndex());
        w = new Week(1, 1900);
        assertEquals(100701L, w.getSerialIndex());
    }

    /**
     * Some checks for the testNext() method.
     */
    public void testNext() {
        Week w = new Week(12, 2000);
        w = (Week) w.next();
        assertEquals(new Year(2000), w.getYear());
        assertEquals(13, w.getWeek());
        w = new Week(53, 9999);
        assertNull(w.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, 0, 0, 0);
        cal.set(Calendar.MILLISECOND, 0);
        Week w = new Week(3, 2006);
        assertEquals(cal.getTime(), w.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, 23, 59, 59);
        cal.set(Calendar.MILLISECOND, 999);
        Week w = new Week(1, 2006);
        assertEquals(cal.getTime(), w.getEnd());
        Locale.setDefault(saved);
    }

    /**
     * A test for a problem in constructing a new Week instance.
     */
    public void testConstructor() {
        Locale savedLocale = Locale.getDefault();
        TimeZone savedZone = TimeZone.getDefault();
        Locale.setDefault(new Locale("da", "DK"));
        TimeZone.setDefault(TimeZone.getTimeZone("Europe/Copenhagen"));
        GregorianCalendar cal = (GregorianCalendar) Calendar.getInstance(
                TimeZone.getDefault(), Locale.getDefault());

        // first day of week is monday
        assertEquals(Calendar.MONDAY, cal.getFirstDayOfWeek());
        cal.set(2007, Calendar.AUGUST, 26, 1, 0, 0);
        cal.set(Calendar.MILLISECOND, 0);
        Date t = cal.getTime();
        Week w = new Week(t, TimeZone.getTimeZone("Europe/Copenhagen"));
        assertEquals(34, w.getWeek());

        Locale.setDefault(Locale.US);
        TimeZone.setDefault(TimeZone.getTimeZone("US/Detroit"));
        cal = (GregorianCalendar) Calendar.getInstance(TimeZone.getDefault());
        // first day of week is Sunday
        assertEquals(Calendar.SUNDAY, cal.getFirstDayOfWeek());
        cal.set(2007, Calendar.AUGUST, 26, 1, 0, 0);
        cal.set(Calendar.MILLISECOND, 0);

        t = cal.getTime();
        w = new Week(t, TimeZone.getTimeZone("Europe/Copenhagen"));
        assertEquals(35, w.getWeek());
        w = new Week(t, TimeZone.getTimeZone("Europe/Copenhagen"),
                new Locale("da", "DK"));
        assertEquals(34, w.getWeek());

        Locale.setDefault(savedLocale);
        TimeZone.setDefault(savedZone);
    }

}

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