File: testgregorian_calendar.cpp

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/* Copyright (c) 2002,2003 CrystalClear Software, Inc.
 * Use, modification and distribution is subject to the 
 * Boost Software License, Version 1.0. (See accompanying
 * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
 * Author: Jeff Garland 
 */

#include "boost/date_time/gregorian_calendar.hpp"
#include "boost/date_time/year_month_day.hpp"
#include "testfrmwk.hpp"
#include <iostream>

int
main() 
{
  typedef boost::date_time::year_month_day_base<unsigned long, 
                                                unsigned short, 
                                                unsigned short > simple_ymd_type;

  typedef boost::date_time::gregorian_calendar_base<simple_ymd_type, unsigned long> 
    gregorian_calendar;

  //  using namespace boost::gregorian;
  check("Day of week 2000-09-24 == 0 (Sun)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(2000,9,24))==0);
  check("Day of week 2000-09-25 == 1 (Mon)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(2000,9,25))==1);
  check("Day of week 2000-09-26 == 2 (Tue)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(2000,9,26))==2);
  check("Day of week 2000-09-27 == 3 (Wed)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(2000,9,27))==3);
  check("Day of week 2000-09-28 == 4 (Thu)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(2000,9,28))==4);
  check("Day of week 2000-09-29 == 5 (Fri)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(2000,9,29))==5);
  check("Day of week 2000-09-30 == 6 (Sat)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(2000,9,30))==6);
  //see calendar FAQ 2.2 for reference
  check("Day of week 1953-08-02 == 0 (Sun)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1953,8,2))==0);
  check("Day of week 1953-08-03 == 1 (Mon)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1953,8,3))==1);
  check("Day of week 1953-08-04 == 2 (Tue)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1953,8,4))==2);
  check("Day of week 1953-08-05 == 3 (Wed)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1953,8,5))==3);
  check("Day of week 1953-08-06 == 4 (Thu)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1953,8,6))==4);
  check("Day of week 1953-08-07 == 5 (Fri)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1953,8,7))==5);
  check("Day of week 1953-08-08 == 6 (Sat)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1953,8,8))==6);
  check("Day of week 2001-08-31 == 5 (Fri)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(2001,8,31))==5);
  
  //Checked against Caledrical Calc M. Edition p 396 and www site
  check("Day of week 1400-01-01 == 3 (Wed)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1400,1,1))==3);
  check("Day of week 1436-02-03 == 3 (Wed)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1436,2,3))==3);
  check("Day of week 1492-04-9 == 6 (Sat)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1492,4,9))==6);
  check("Day of week 1560-03-5 == 6 (Sat)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1560,3,5))==6);
  check("Day of week 1716-07-24 == 5 (Fri)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1716,7,24))==5);
  check("Day of week 1768-06-19 == 0 (Sun)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1768,6,19))==0);
  check("Day of week 1839-03-27 == 3 (Wed)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1839,3,27))==3);
  check("Day of week 1819-08-02 == 1 (Mon)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1819,8,2))==1);
  check("Day of week 1903-04-19 == 0 (Sun)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1903,4,19))==0);
  check("Day of week 1929-08-25 == 0 (Sun)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(1929,8,25))==0);
  check("Day of week 2038-11-10 == 3 (Wed)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(2038,11,10))==3);
  check("Day of week 2094-07-18 == 0 (Sun)", 
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(2094,7,18))==0);
  //verified against website applet
  check("Day of week 3002-07-10 == 6 (Sat)",
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(3002,7,10))==6);
  //verified against website applet
  check("Day of week 4002-07-10 == 3 (Wed)",
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(4002,7,10))==3);
  //verified against website applet
  check("Day of week 5002-07-10 == 6 (Sat)",
        gregorian_calendar::day_of_week(gregorian_calendar::ymd_type(5002,7,10))==6);

  check("1404 is a leap year", gregorian_calendar::is_leap_year(1404));
  check("2000 is a leap year", gregorian_calendar::is_leap_year(2000));
  check("2004 is a leap year", gregorian_calendar::is_leap_year(2004));
  check("2400 is a leap year", gregorian_calendar::is_leap_year(2400));
  check("4000 is a leap year", gregorian_calendar::is_leap_year(4000));
  check("1400 is NOT a leap year", !gregorian_calendar::is_leap_year(1400));
  check("1900 is NOT a leap year", !gregorian_calendar::is_leap_year(1900));
  check("2100 is NOT a leap year", !gregorian_calendar::is_leap_year(2100));
  check("1999 is NOT a leap year", !gregorian_calendar::is_leap_year(1999));
  check("5000 is NOT a leap year", !gregorian_calendar::is_leap_year(5000));

  int weeknum1 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(2004,10,18));
  check("ToWeekNumber 2004-10-18 is week 43", weeknum1 == 43);
  
  int weeknum2 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(2002,1,1));
  check("ToWeekNumber 2002-1-1 is week 1", weeknum2 == 1);
  
  int weeknum3 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(2000,12,31));
  check("ToWeekNumber 2000-12-31 is week 52", weeknum3 == 52);

  //check for week when week==0.
  int weeknum4 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(2000,1,1));
  check("ToWeekNumber 2000-1-1 is week 52", weeknum4 == 52);
  
  //check for week when week==53 and day==6.
  int weeknum5 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(1998,12,31));
  check("ToWeekNumber 1998-12-31 is week 53", weeknum5 == 53);
  
  //check for week when week==53 day==5 and the year is a leap year.
  int weeknum6 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(1992,12,31));
  check("ToWeekNumber 1992-12-31 is week 53", weeknum6 == 53);

  //check for week when week==53 1993-Jan-1
  int weeknum7 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(1993,1,1));
  check("ToWeekNumber 1993-1-1 is week 53", weeknum7 == 53);

  //check for week when week==53 1993-Jan-2
  int weeknum8 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(1993,1,2));
  check("ToWeekNumber 1993-Jan-2 is week 53", weeknum8 == 53);

  //check for week when week==53 1993-Jan-3
  int weeknum9 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(1993,1,3));
  check("ToWeekNumber 1993-Jan-3 is week 53", weeknum9 == 53);

  //check for week when week==1 1993-Jan-4
  int weeknum10 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(1993,1,4));
  check("ToWeekNumber 1993-Jan-4 is week 1", weeknum10 == 1);
  
  //check for week when week=53 and day != 6 and != 5.
  int weeknum11 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(2001,12,31));
  check("ToWeekNumber 2001-12-31 is week 1", weeknum11 == 1);

  //test the boundaries of week_number
  int weeknum12 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(1400,1,1));
  check("ToWeekNumber 1400-1-1 is week 1", weeknum12 == 1);

  int weeknum13 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(9999,12,31));
  check("ToWeekNumber 9999-12-31 is week 52", weeknum13 == 52);

  int weeknum14 = gregorian_calendar::week_number(gregorian_calendar::ymd_type(2003,12,29));
  check("ToWeekNumber 2003-12-29 is week 1", weeknum14 == 1);


  unsigned long jday1 = gregorian_calendar::day_number(gregorian_calendar::ymd_type(2000,1,1));
  unsigned long jday2 = gregorian_calendar::day_number(gregorian_calendar::ymd_type(2001,1,1));
//   unsigned short year, month, day;
//   //2451545 is 2000-1-1
  check("ToDayNumber 2000-1-1 is day 2451545", jday1 == 2451545);
  check("ToDayNumber 2001-1-1 is day 2451911", jday2 == 2451911);
  gregorian_calendar::ymd_type ymd = gregorian_calendar::from_day_number(jday1);
  check("from_day_number test 2000-1-1",  (ymd.year==2000)&&
                                          (ymd.month==1) &&
                                          (ymd.day==1) );
  
  unsigned long julianday1 = gregorian_calendar::julian_day_number(gregorian_calendar::ymd_type(2000,12,31));
  check("ToJulianDayNumber 2000-12-31 is day 2451910", julianday1 == 2451910);
  gregorian_calendar::ymd_type ymd1 = gregorian_calendar::from_julian_day_number(julianday1);
  std::cout << ymd1.year << "-" << ymd1.month << "-" << ymd1.day << std::endl;
  check("from_julian_day_number test 2000-12-31", (ymd1.year==2000) &&
                                                  (ymd1.month==12) &&
                                                  (ymd1.day==31) );
  unsigned long julianday2 = gregorian_calendar::modjulian_day_number(gregorian_calendar::ymd_type(2000,12,31));
  std::cout << julianday2 << std::endl;
  check("TomodJulianDayNumber 2000-12-31 is day 51909", julianday2 == 51909);
  gregorian_calendar::ymd_type ymd2 = gregorian_calendar::from_modjulian_day_number(julianday2);
  check("from_modjulian_day_number test 2000-12-31", (ymd2.year==2000) &&
                                                     (ymd2.month==12) &&
                                                     (ymd2.day==31) ); 
  unsigned long julianday3 = gregorian_calendar::julian_day_number(gregorian_calendar::ymd_type(1400,1,1));
  check("ToJulianDayNumber 1400-1-1 is day 2232400", julianday3 == 2232400);
  gregorian_calendar::ymd_type ymd3 = gregorian_calendar::from_julian_day_number(julianday3);
  check("from_julian_day_number test 1400-1-1",   (ymd3.year==1400) &&
                                                  (ymd3.month==1) &&
                                                  (ymd3.day==1) );
  long mjd3 = gregorian_calendar::modjulian_day_number(gregorian_calendar::ymd_type(1400,1,1));
  std::cout << "mjd3: " << mjd3 << std::endl;
  check("mod julian day 1400-1-1 is day -167601", mjd3 == -167601);
  gregorian_calendar::ymd_type mjd_ymd3 = gregorian_calendar::from_modjulian_day_number(mjd3);
  check("from_julian_day_number test 1400-1-1",   (mjd_ymd3.year==1400) &&
                                                  (mjd_ymd3.month==1) &&
                                                  (mjd_ymd3.day==1) );


  unsigned long julianday4 = gregorian_calendar::julian_day_number(gregorian_calendar::ymd_type(1900,2,28));
  check("ToJulianDayNumber 1900-2-28 is day 2415079", julianday4 == 2415079);
  gregorian_calendar::ymd_type ymd4 = gregorian_calendar::from_julian_day_number(julianday4);
  check("from_julian_day_number test 1900-2-28",  (ymd4.year==1900) &&
                                                  (ymd4.month==2) &&
                                                  (ymd4.day==28) );

  unsigned long julianday5 = gregorian_calendar::julian_day_number(gregorian_calendar::ymd_type(1436,2,3));
  check("ToJulianDayNumber 1436-2-3 is day 2245581", julianday5 == 2245581);
  gregorian_calendar::ymd_type ymd5 = gregorian_calendar::from_julian_day_number(julianday5);
  check("from_julian_day_number test 1436-2-3",  (ymd5.year==1436) &&
                                                 (ymd5.month==2) &&
                                                 (ymd5.day==3) );

  unsigned long julianday6 = gregorian_calendar::julian_day_number(gregorian_calendar::ymd_type(1996,2,25));
  check("ToJulianDayNumber 1996-2-25 is day 2450139", julianday6 == 2450139);
  gregorian_calendar::ymd_type ymd6 = gregorian_calendar::from_julian_day_number(julianday6);
  check("from_julian_day_number test 1996-2-25",  (ymd6.year==1996) &&
                                                  (ymd6.month==2) &&
                                                  (ymd6.day==25) );
  long mjd6 = gregorian_calendar::modjulian_day_number(gregorian_calendar::ymd_type(1996,2,25));
  check("ToJulianDayNumber 1996-2-25 is day 50138", mjd6 == 50138);
  gregorian_calendar::ymd_type mjd_ymd6 = gregorian_calendar::from_modjulian_day_number(mjd6);
  check("from_julian_day_number test 1996-2-25",  (mjd_ymd6.year==1996) &&
                                                  (mjd_ymd6.month==2) &&
                                                  (mjd_ymd6.day==25) );


  unsigned long jday3 = gregorian_calendar::day_number(gregorian_calendar::ymd_type(1999,1,1));
  check("366 days between 2000-1-1 and 2001-1-1", (jday2-jday1) == 366);
  check("731 days between 1999-1-1 and 2001-1-1 ",(jday2-jday3) == 731);

  unsigned long jday4 = gregorian_calendar::day_number(gregorian_calendar::ymd_type(2000,2,28));
  unsigned long jday5 = gregorian_calendar::day_number(gregorian_calendar::ymd_type(2000,3,1));
  check("2 days between 2000-2-28 and 2000-3-1 ",(jday5-jday4) == 2);

  check("31 days in month Jan 2000", gregorian_calendar::end_of_month_day(2000,1) == 31);
  check("29 days in month Feb 2000", gregorian_calendar::end_of_month_day(2000,2) == 29);
  check("28 days in month Feb 1999", gregorian_calendar::end_of_month_day(1999,2) == 28);
  check("28 days in month Feb 2001", gregorian_calendar::end_of_month_day(2001,2) == 28);
  check("31 days in month Mar 2000", gregorian_calendar::end_of_month_day(2000,3) == 31);
  check("30 days in month Apr 2000", gregorian_calendar::end_of_month_day(2000,4) == 30);
  check("31 days in month May 2000", gregorian_calendar::end_of_month_day(2000,5) == 31);
  check("30 days in month Jun 2000", gregorian_calendar::end_of_month_day(2000,6) == 30);
  check("31 days in month Jul 2000", gregorian_calendar::end_of_month_day(2000,7) == 31);
  check("31 days in month Aug 2000", gregorian_calendar::end_of_month_day(2000,8) == 31);
  check("30 days in month Sep 2000", gregorian_calendar::end_of_month_day(2000,9) == 30);
  check("31 days in month Oct 2000", gregorian_calendar::end_of_month_day(2000,10) == 31);
  check("30 days in month Nov 2000", gregorian_calendar::end_of_month_day(2000,11) == 30);
  check("31 days in month Dec 2000", gregorian_calendar::end_of_month_day(2000,12) == 31);


  std::cout << gregorian_calendar::epoch().year << std::endl;



  return printTestStats();

}