time_t tt1(1060483634);
std::time_t tt1(1060483634);
main() {  using namespace boost::posix_time;  using namespace boost::gregorian;  date d(2001,Dec,1);  time_duration td(5,4,3);  ptime t1(d, td);     //2001-Dec-1 05:04:03  check("date part check", t1.date() == d);  check("time part check", t1.time_of_day() == td);  ptime t2(t1); //copy constructor  ptime t3 = t2; //assignment  check("date part check", t3.date() == d);  check("time part check", t3.time_of_day() == td);  check("equality", t1 == t3);  date d2(2001,Jan,1);  ptime t4(d2, td);  //2001-Jan-1 05:04:03  check("equality - not equal", !(t1 == t4));  time_duration td1(5,4,0);  ptime t5(d, td1); //2001-Dec-1 05:04:00  check("equality - not equal", !(t1 == t5));  check("not equal - not equal", t1 != t5);  check("less - not less",       !(t1 < t1));  check("less - less",           t4 < t1);  check("less - less",           t5 < t1);  check("less equal - equal",    t1 <= t1);  check("greater equal - equal", t1 >= t1);  date_duration twodays(2);  ptime t6 = t1 + twodays;  date d3(2001,Dec,3);  check("operator+(date_duration)", t6 == ptime(d3,td));  ptime t7 = t1 - twodays;  check("operator-(date_duration)", t7 == ptime(date(2001,Nov,29),td));  time_duration td2(1,2,3);   ptime t8(date(2001,Dec,1)); //midnight  ptime t9 = t8 + td2; //Dec 2 at 01:02:03  ptime t10(date(2001,Dec,1),time_duration(1,2,3));  std::cout << to_simple_string(t9) << std::endl;  std::cout << to_simple_string(t10) << std::endl;  std::cout << to_simple_string(td2) << std::endl;  check("add 2001-Dec-01 0:0:0 + 01:02:03", t9 == t10);  time_duration td3(24,0,0); // a day  check("add 2001-Dec-01 0:0:0 + 24:00:00", t8+td3 == ptime(date(2001,Dec,2)));  time_duration td4(24,0,1); // a day, 1 second  check("add 2001-Dec-01 0:0:0 + 24:00:01", t8+td4        == ptime(date(2001,Dec,2), time_duration(0,0,1)));  //looks like this fails b/c limits are exceeded now that we have subseconds..  time_duration td5(168,0,1);  //one week 24X7   check("add 2001-Dec-01 0:0:0 + 168:00:01", t8+td5         == ptime(date(2001,Dec,8), time_duration(0,0,1)));//   ptime t10a = t8+td5;//   std::cout << to_simple_string(t10a) << std::endl;  //Subtraction of time duration -- add more!!  ptime t11(date(2001,Dec,1), time_duration(12,0,0)); //noon  time_duration td6(12,0,1);  ptime t12 = t11-td6;  check("sub 2001-Dec-01 12:0:0 - 12:00:01",         t12 == ptime(date(2001,Nov,30), time_duration(23,59,59)));  check("sub 2001-Dec-01 12:0:0 - 13:00:00",         (t11-time_duration(13,0,0))== ptime(date(2001,Nov,30),                                             time_duration(23,0,0)));  //  std::cout << to_simple_string(t12.date()) << std::endl;  ptime t13(d, hours(3));  ptime t14(d, hours(4));  ptime t14a(d+date_duration(1), hours(4));  //Subtract 2 times  std::cout << to_simple_string(t14-t13) << std::endl;  //  time_duration td7 =   check("time subtraction positive result",         t14-t13 == hours(1));  std::cout << to_simple_string(t13-t14) << std::endl;  check("time subtraction negative result",         t13-t14 == hours(-1));  check("time subtraction positive result",         t14a-t14 == hours(24));    ptime t15(d, time_duration(0,0,0,1));  ptime t16(d, time_duration(0,0,0,2));  check("time subsecond add test",         t15 + time_duration::unit() == t16);  check("time subsecond sub test",         t16 - time_duration::unit() == t15);   ptime t17 = ptime(d) - time_duration::unit();  std::cout << to_simple_string(t17) << std::endl;  ptime t18(d, hours(25));  std::cout << to_simple_string(t18) << std::endl;  //time_t conversions:  t18 = from_time_t(0); //1970-1-1 0:0:0  check("time_t conversion of 0", t18 == ptime(date(1970,1,1)));  std::time_t tt(500000000);   t18 = from_time_t(tt); //1985-11-5 0:53:20  check("time_t conversion of 500000000",         t18 == ptime(date(1985,11,5), time_duration(0,53,20)));  time_t tt1(1060483634);   t18 = from_time_t(tt1); //2003-08-10 2:47:14  check("time_t conversion of 1060483634",         t18 == ptime(date(2003,8,10), time_duration(2,47,14)));  std::time_t tt2(1760483634);   t18 = from_time_t(tt2); //2025-10-14 23:13:54  check("time_t conversion of 1760483634",         t18 == ptime(date(2025,10,14), time_duration(23,13,54)));  std::time_t tt3(1960483634);   t18 = from_time_t(tt3); //2032-2-15 18:47:14  check("time_t conversion of 1960483634",         t18 == ptime(date(2032,2,15), time_duration(18,47,14)));  return printTestStats();}