/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2012, 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.]
 *
 * -----------------
 * QuarterTests.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);
 * 17-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 * 13-Mar-2003 : Added serialization test (DG);
 * 11-Jan-2005 : Added check 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 org.junit.Before;
import org.junit.Test;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
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 static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;

/**
 * Tests for the {link Quarter} class.
 */
public class QuarterTest  {

    /** A quarter. */
    private Quarter q1Y1900;

    /** A quarter. */
    private Quarter q2Y1900;

    /** A quarter. */
    private Quarter q3Y9999;

    /** A quarter. */
    private Quarter q4Y9999;





    /**
     * Common test setup.
     */
    @Before
    public void setUp() {
        this.q1Y1900 = new Quarter(1, 1900);
        this.q2Y1900 = new Quarter(2, 1900);
        this.q3Y9999 = new Quarter(3, 9999);
        this.q4Y9999 = new Quarter(4, 9999);
    }

    /**
     * Check that a Quarter instance is equal to itself.
     *
     * SourceForge Bug ID: 558850.
     */
    @Test
    public void testEqualsSelf() {
        Quarter quarter = new Quarter();
        assertEquals(quarter, quarter);
    }

    /**
     * Tests the equals method.
     */
    @Test
    public void testEquals() {
        Quarter q1 = new Quarter(2, 2002);
        Quarter q2 = new Quarter(2, 2002);
        assertEquals(q1, q2);
    }

    /**
     * In GMT, the end of Q1 2002 is java.util.Date(1017619199999L).  Use this
     * to check the quarter constructor.
     */
    @Test
    public void testDateConstructor1() {

        TimeZone zone = TimeZone.getTimeZone("GMT");
        Calendar c = new GregorianCalendar(zone);
        Quarter q1 = new Quarter(new Date(1017619199999L), zone, Locale.getDefault());
        Quarter q2 = new Quarter(new Date(1017619200000L), zone, Locale.getDefault());

        assertEquals(1, q1.getQuarter());
        assertEquals(1017619199999L, q1.getLastMillisecond(c));

        assertEquals(2, q2.getQuarter());
        assertEquals(1017619200000L, q2.getFirstMillisecond(c));

    }

    /**
     * In Istanbul, the end of Q1 2002 is java.util.Date(1017608399999L).  Use
     * this to check the quarter constructor.
     */
    @Test
    public void testDateConstructor2() {

        TimeZone zone = TimeZone.getTimeZone("Europe/Istanbul");
        Calendar c = new GregorianCalendar(zone);
        Quarter q1 = new Quarter(new Date(1017608399999L), zone, Locale.getDefault());
        Quarter q2 = new Quarter(new Date(1017608400000L), zone, Locale.getDefault());

        assertEquals(1, q1.getQuarter());
        assertEquals(1017608399999L, q1.getLastMillisecond(c));

        assertEquals(2, q2.getQuarter());
        assertEquals(1017608400000L, q2.getFirstMillisecond(c));

    }

    /**
     * Set up a quarter equal to Q1 1900.  Request the previous quarter, it
     * should be null.
     */
    @Test
    public void testQ1Y1900Previous() {
        Quarter previous = (Quarter) this.q1Y1900.previous();
        assertNull(previous);
    }

    /**
     * Set up a quarter equal to Q1 1900.  Request the next quarter, it should
     * be Q2 1900.
     */
    @Test
    public void testQ1Y1900Next() {
        Quarter next = (Quarter) this.q1Y1900.next();
        assertEquals(this.q2Y1900, next);
    }

    /**
     * Set up a quarter equal to Q4 9999.  Request the previous quarter, it
     * should be Q3 9999.
     */
    @Test
    public void testQ4Y9999Previous() {
        Quarter previous = (Quarter) this.q4Y9999.previous();
        assertEquals(this.q3Y9999, previous);
    }

    /**
     * Set up a quarter equal to Q4 9999.  Request the next quarter, it should
     * be null.
     */
    @Test
    public void testQ4Y9999Next() {
        Quarter next = (Quarter) this.q4Y9999.next();
        assertNull(next);
    }

    /**
     * Test the string parsing code...
     */
    @Test
    public void testParseQuarter() {

        Quarter quarter = Quarter.parseQuarter("Q1-2000");

        assertEquals(1, quarter.getQuarter());
        assertEquals(2000, quarter.getYear().getYear());


        quarter = Quarter.parseQuarter("2001-Q2");

        assertEquals(2, quarter.getQuarter());
        assertEquals(2001, quarter.getYear().getYear());

        // test 3...

        quarter = Quarter.parseQuarter("Q3, 2002");

        assertEquals(3, quarter.getQuarter());
        assertEquals(2002, quarter.getYear().getYear());

    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    @Test
    public void testSerialization() throws IOException, ClassNotFoundException {

        Quarter q1 = new Quarter(4, 1999);


            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(q1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                new ByteArrayInputStream(buffer.toByteArray())
            );
            Quarter q2 = (Quarter) in.readObject();
            in.close();

        assertEquals(q1, q2);

    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    @Test
    public void testHashcode() {
        Quarter q1 = new Quarter(2, 2003);
        Quarter q2 = new Quarter(2, 2003);
        assertEquals(q1, q2);
        int h1 = q1.hashCode();
        int h2 = q2.hashCode();
        assertEquals(h1, h2);
    }

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

    /**
     * Some tests for the constructor with (int, int) arguments.  Covers bug
     * report 1377239.
     */
    @Test
    public void testConstructor() {
        try {
            /*Quarter q =*/ new Quarter(0, 2005);
            fail("IllegalArgumentException should have been thrown from 0 querter");
        }
        catch (IllegalArgumentException e) {
            assertEquals("Quarter outside valid range.", e.getMessage());
        }

        try {
            /*Quarter q =*/ new Quarter(5, 2005);
            fail("IllegalArgumentException should have been thrown from 5 quarter");
        }
        catch (IllegalArgumentException e) {
            assertEquals("Quarter outside valid range.", e.getMessage());
        }
    }

    /**
     * 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"));
        Quarter q = new Quarter(3, 1970);
        assertEquals(15634800000L, q.getFirstMillisecond());
        Locale.setDefault(saved);
        TimeZone.setDefault(savedZone);
    }

    /**
     * Some checks for the getFirstMillisecond(TimeZone) method.
     */
    @Test
    public void testGetFirstMillisecondWithTimeZone() {
        Quarter q = new Quarter(2, 1950);
        TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles");
        Calendar c = new GregorianCalendar(zone);
        assertEquals(-623347200000L, q.getFirstMillisecond(c));

        // try null calendar
        try {
            q.getFirstMillisecond(null);
            fail("NullPointerException should have been thrown on null parameter");
        }
        catch (NullPointerException e) {
            //we expect to go in here
        }
    }

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

        // try null calendar
        try {
            q.getFirstMillisecond(null);
            fail("NullPointerException should have been thrown on null parameter");
        }
        catch (NullPointerException e) {
            //we expect to go in here
        }
    }

    /**
     * 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"));
        Quarter q = new Quarter(3, 1970);
        assertEquals(23583599999L, q.getLastMillisecond());
        Locale.setDefault(saved);
        TimeZone.setDefault(savedZone);
    }

    /**
     * Some checks for the getLastMillisecond(TimeZone) method.
     */
    @Test
    public void testGetLastMillisecondWithTimeZone() {
        Quarter q = new Quarter(2, 1950);
        TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles");
        Calendar c = new GregorianCalendar(zone);
        assertEquals(-615488400001L, q.getLastMillisecond(c));

        // try null calendar
        try {
            q.getLastMillisecond(null);
            fail("NullPointerException should have been thrown with null parameter");
        }
        catch (NullPointerException e) {
            // we expect to go in here
        }
    }

    /**
     * Some checks for the getLastMillisecond(TimeZone) method.
     */
    @Test
    public void testGetLastMillisecondWithCalendar() {
        Quarter q = new Quarter(3, 2001);
        GregorianCalendar calendar = new GregorianCalendar(Locale.GERMANY);
        calendar.setTimeZone(TimeZone.getTimeZone("Europe/Frankfurt"));
        assertEquals(1001894399999L, q.getLastMillisecond(calendar));

        // try null calendar
        try {
            q.getLastMillisecond(null);
            fail("NullPointerException should have been thrown by null parameter");
        }
        catch (NullPointerException e) {
            //we expect to go in here
        }
    }

    /**
     * Some checks for the getSerialIndex() method.
     */
    @Test
    public void testGetSerialIndex() {
        Quarter q = new Quarter(1, 2000);
        assertEquals(8001L, q.getSerialIndex());
        q = new Quarter(1, 1900);
        assertEquals(7601L, q.getSerialIndex());
    }

    /**
     * Some checks for the testNext() method.
     */
    @Test
    public void testNext() {
        Quarter q = new Quarter(1, 2000);
        q = (Quarter) q.next();
        assertEquals(new Year(2000), q.getYear());
        assertEquals(2, q.getQuarter());
        q = new Quarter(4, 9999);
        assertNull(q.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.JULY, 1, 0, 0, 0);
        cal.set(Calendar.MILLISECOND, 0);
        Quarter q = new Quarter(3, 2006);
        assertEquals(cal.getTime(), q.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.MARCH, 31, 23, 59, 59);
        cal.set(Calendar.MILLISECOND, 999);
        Quarter q = new Quarter(1, 2006);
        assertEquals(cal.getTime(), q.getEnd());
        Locale.setDefault(saved);
    }
}
