TestChrono.java

/*
 * Copyright (c) 2012, Stephen Colebourne & Michael Nascimento Santos
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 *  * Neither the name of JSR-310 nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package javax.time.chrono;

import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotNull;
import static org.testng.Assert.assertSame;
import static org.testng.Assert.assertTrue;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.time.calendrical.ChronoField;
import java.time.chrono.Chrono;
import java.time.chrono.ChronoLocalDate;
import java.time.chrono.ISOChrono;
import java.time.chrono.global.HijrahChrono;
import java.time.chrono.global.JapaneseChrono;
import java.time.chrono.global.MinguoChrono;
import java.time.chrono.global.ThaiBuddhistChrono;
import java.util.Locale;
import java.util.Set;

import org.testng.annotations.BeforeMethod;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

/**
 * Test Chrono class.
 */
@Test
public class TestChrono {

  @BeforeMethod(groups = "tck")
  public void setUp() {

    // Ensure each of the classes are initialized (until initialization is fixed)
    Chrono<?> c;
    c = HijrahChrono.INSTANCE;
    c = ISOChrono.INSTANCE;
    c = JapaneseChrono.INSTANCE;
    c = MinguoChrono.INSTANCE;
    c = ThaiBuddhistChrono.INSTANCE;
    c.toString(); // avoids variable being marked as unused
  }

  // -----------------------------------------------------------------------
  // regular data factory for names and descriptions of available calendars
  // -----------------------------------------------------------------------
  @DataProvider(name = "calendars")
  Object[][] data_of_calendars() {

    return new Object[][] { { "Hijrah", "islamicc", "Hijrah calendar" }, { "ISO", "iso8601", "ISO calendar" },
        { "Japanese", "japanese", "Japanese calendar" }, { "Minguo", "roc", "Minguo Calendar" },
        { "ThaiBuddhist", "buddhist", "ThaiBuddhist calendar" }, };
  }

  @Test(dataProvider = "calendars")
  public void test_getters(String chronoId, String calendarSystemType, String description) {

    Chrono<?> chrono = Chrono.of(chronoId);
    assertNotNull(chrono, "Required calendar not found by ID: " + chronoId);
    assertEquals(chrono.getId(), chronoId);
    assertEquals(chrono.getCalendarType(), calendarSystemType);
  }

  @Test(dataProvider = "calendars")
  public void test_required_calendars(String chronoId, String calendarSystemType, String description) {

    Chrono<?> chrono = Chrono.of(chronoId);
    assertNotNull(chrono, "Required calendar not found by ID: " + chronoId);
    chrono = Chrono.of(calendarSystemType);
    assertNotNull(chrono, "Required calendar not found by type: " + chronoId);
    Set<Chrono<?>> cals = Chrono.getAvailableChronologies();
    assertTrue(cals.contains(chrono), "Required calendar not found in set of available calendars");
  }

  @Test(groups = "tck")
  public void test_calendar_list() {

    Set<Chrono<?>> chronos = Chrono.getAvailableChronologies();
    assertNotNull(chronos, "Required list of calendars must be non-null");
    for (Chrono<?> chrono : chronos) {
      Chrono<?> lookup = Chrono.of(chrono.getId());
      assertNotNull(lookup, "Required calendar not found: " + chrono);
    }
    assertEquals(chronos.size() >= data_of_calendars().length, true, "Required list of calendars too short");
  }

  /**
   * Compute the number of days from the Epoch and compute the date from the number of days.
   */
  @Test(dataProvider = "calendars", groups = "tck")
  public void test_epoch(String name, String alias, String description) {

    Chrono<?> chrono = Chrono.of(name); // a chronology. In practice this is rarely hardcoded
    ChronoLocalDate<?> date1 = chrono.dateNow();
    long epoch1 = date1.getLong(ChronoField.EPOCH_DAY);
    ChronoLocalDate<?> date2 = date1.with(ChronoField.EPOCH_DAY, epoch1);
    assertEquals(date1, date2, "Date from epoch day is not same date: " + date1 + " != " + date2);
    long epoch2 = date1.getLong(ChronoField.EPOCH_DAY);
    assertEquals(epoch1, epoch2, "Epoch day not the same: " + epoch1 + " != " + epoch2);
  }

  // -----------------------------------------------------------------------
  // locale based lookup
  // -----------------------------------------------------------------------
  @DataProvider(name = "calendarsystemtype")
  Object[][] data_CalendarType() {

    return new Object[][] { { HijrahChrono.INSTANCE, "islamicc" }, { ISOChrono.INSTANCE, "iso8601" },
        { JapaneseChrono.INSTANCE, "japanese" }, { MinguoChrono.INSTANCE, "roc" },
        { ThaiBuddhistChrono.INSTANCE, "buddhist" }, };
  }

  @Test(dataProvider = "calendarsystemtype", groups = "tck")
  public void test_getCalendarType(Chrono<?> chrono, String calendarType) {

    assertEquals(chrono.getCalendarType(), calendarType);
  }

  @Test(dataProvider = "calendarsystemtype", groups = "tck")
  public void test_lookupLocale(Chrono<?> chrono, String calendarType) {

    Locale locale = new Locale.Builder().setLanguage("en").setRegion("CA").setUnicodeLocaleKeyword("ca", calendarType)
        .build();
    assertEquals(Chrono.ofLocale(locale), chrono);
  }

  // -----------------------------------------------------------------------
  // serialization; serialize and check each calendar system
  // -----------------------------------------------------------------------
  @Test(groups = { "implementation" }, dataProvider = "calendarsystemtype")
  public <C extends Chrono<C>> void test_chronoSerializationSingleton(C chrono, String calendarType) throws Exception {

    C orginal = chrono;
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream out = new ObjectOutputStream(baos);
    out.writeObject(orginal);
    out.close();
    ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
    ObjectInputStream in = new ObjectInputStream(bais);
    C ser = (C) in.readObject();
    assertSame(ser, chrono, "Deserialized Chrono is not the singleton serialized");
  }

}