testlocal_time.cpp

C++的一个好库。。。现在很流行

    }catch(std::exception& e){
      check(std::string("Caught unexpected exception ") + e.what(), false);
    }
    try{
      local_date_time blt(date(2004,Apr,4), time_duration(2,30,0), ny_tz, true);
      check("Did not catch expected exception (Invalid_Time_Label)", false);
    }catch(time_label_invalid& e){
      check(std::string("Caught expected exception (Invalid_Time_Label) ") + e.what(), true);
    }catch(std::exception& e){
      check(std::string("Caught unexpected exception ") + e.what(), false);
    }
    
    
    // thorough is_dst() tests, tests againts null_tz and non dst tz are
    // done where those local times were tested
    {
      date d(2004,Apr,4);
      time_duration td(1,15,0); // local
      local_date_time lt1(d,td,ny_tz,false);
      local_date_time lt2(ptime(d,time_duration(6,15,0)), ny_tz);
      check("are local_times equal", lt1.utc_time() == lt2.utc_time());
      check("is_dst - transition in 1", lt1.is_dst() == false);
      check("is_dst - transition in 2", lt2.is_dst() == false);
      lt1 += hours(1);
      lt2 += hours(1);
      check("is_dst - transition in 1", lt1.is_dst() == true);
      check("is_dst - transition in 2", lt2.is_dst() == true);
    }
    {
      date d(2004,Oct,31);
      time_duration td(1,15,0); // local
      local_date_time lt1(d,td,ny_tz,true);
      /*try{
        //local_date_time lt1(d,td,ny_tz,false);
        local_date_time lt1(d,td,ny_tz,true);
        std::cout << "no exception thrown" << std::endl;
      }catch(time_label_invalid& e){
        std::cout << "caught: " << e.what() << std::endl;
      }*/
      local_date_time lt2(ptime(d,time_duration(5,15,0)), ny_tz);
      check("are local_times equal", lt1.utc_time() == lt2.utc_time());
      check("is_dst - transition out 1", lt1.is_dst() == true);
      check("is_dst - transition out 2", lt2.is_dst() == true);
      lt1 += hours(1);
      lt2 += hours(1);
      check("is_dst - transition out 1", lt1.is_dst() == false);
      check("is_dst - transition out 2", lt2.is_dst() == false);
    }
    { // southern hemisphere 
      date d(2004,Oct,31);
      time_duration td(1,15,0); // local
      local_date_time lt1(d,td,sydney,false);
      check("is_dst - transition in (sydney)", lt1.is_dst() == false);
      lt1 += hours(1);
      check("is_dst - transition in (sydney)", lt1.is_dst() == true);
    }
    {
      date d(2004,Mar,28);
      time_duration td(2,15,0); // local; sydney has a weird trans time
      local_date_time lt1(d,td,sydney,true);
      check("is_dst - transition out (sydney)", lt1.is_dst() == true);
      lt1 += hours(1);
      check("is_dst - transition out (sydney)", lt1.is_dst() == false);
    }


    
    std::cout << "\nTest conversion of time zone from Arizona to New York" << std::endl;
    local_date_time ny_time = az_time.local_time_in(ny_tz);
    check("Zone abbreviation", ny_time.zone()->std_zone_abbrev() == std::string("EST"));
    check("base offset", ny_time.zone()->base_utc_offset() == hours(-5));
    check("base offset", ny_time.zone()->has_dst() == true);
    check("to_string: " + ny_time.to_string(), 
          ny_time.to_string() == "2003-Dec-20 07:00:00 EST");
    ny_time += hours(3);
    check("to_string after add 3 hours: " + ny_time.to_string(), 
          ny_time.to_string() == "2003-Dec-20 10:00:00 EST");
    ny_time += days(3);
    check("to_string after add 3 days: " + ny_time.to_string(), 
          ny_time.to_string() == "2003-Dec-23 10:00:00 EST");
    
  
    { // test comparisons & math operations
      date d(2003, Aug, 28);
      ptime sv_pt(pos_infin);
      local_date_time sv_lt(sv_pt, ny_tz);
      ptime utc_pt(d, hours(12));
      // all 4 of the following local times happen at the same instant
      // so they are all equal
      local_date_time utc_lt(utc_pt, null_tz);           // noon in utc
      local_date_time az_lt(d, hours(5), az_tz, false);  // 5am local std
      local_date_time ny_lt(d, hours(8), ny_tz, true);   // 8am local dst
      local_date_time au_lt(d, hours(22), sydney, false);// 10pm local std

      check("local_date_time to tm",
          std::string("4 239 08/28/2003 05:00:00 STD") == tm_out(to_tm(az_lt)));
      check("local_date_time to tm",
          std::string("4 239 08/28/2003 08:00:00 DST") == tm_out(to_tm(ny_lt)));
      check("local_date_time to tm",
          std::string("4 239 08/28/2003 22:00:00 STD") == tm_out(to_tm(au_lt)));

      try{
        local_date_time ldt(not_a_date_time);
        tm ldt_tm = to_tm(ldt);
        check("Exception not thrown (special_value to_tm)", false);
      }catch(std::out_of_range e){
        check("Caught expected exception (special_value to_tm)", true);
      }catch(...){
        check("Caught un-expected exception (special_value to_tm)", false);
      }
      // check that all are equal to sv_pt
      check("local == utc", az_lt == utc_lt); 
      check("local == utc", ny_lt == utc_lt); 
      check("local == utc", au_lt == utc_lt); 
      check("local <= utc", au_lt <= utc_lt); 
      check("local >= utc", au_lt >= utc_lt); 
      check("local == local", az_lt == ny_lt); 
      check("local < local", az_lt < ny_lt+seconds(1)); 
      check("local > local", az_lt+seconds(1) >  ny_lt); 
      check("local <= local", az_lt <= ny_lt); 
      check("local >= local", az_lt >=  ny_lt); 
      check("local != local", az_lt+seconds(1) !=  ny_lt); 
      
      au_lt += hours(1);
      check("local != after +=", au_lt != utc_lt); 
      check("local <= after +=", utc_lt <= au_lt);  
      check("local >= after +=", au_lt >= utc_lt); 
      check("local < after +=", utc_lt < au_lt); 
      check("local > after +=", au_lt > utc_lt);
      au_lt -= hours(1);
      check("local == utc after -=", au_lt == utc_lt); 

      check("local + days", 
          (az_lt + days(2)).to_string() == "2003-Aug-30 05:00:00 MST");
      check("local - days", 
          (az_lt - days(2)).to_string() == "2003-Aug-26 05:00:00 MST");
      check("local += days", 
          (az_lt += days(2)).to_string() == "2003-Aug-30 05:00:00 MST");
      check("local -= days", 
          (az_lt -= days(2)).to_string() == "2003-Aug-28 05:00:00 MST");
      check("local + time_duration", 
          (az_lt + hours(2)).to_string() == "2003-Aug-28 07:00:00 MST");
      check("local - time_duration", 
          (az_lt - hours(2)).to_string() == "2003-Aug-28 03:00:00 MST");
      // special_values is more thoroughly tested in posix_time
      check("pos_infinity > local", sv_lt > au_lt); 
      local_date_time sv_lt2(sv_lt + days(2));
      check("pos_infin + duration == pos_infin", sv_lt2 == sv_lt);
   
#if defined(BOOST_DATE_TIME_OPTIONAL_GREGORIAN_TYPES)
      months m(2);
      years y(2);
      check("Local + months", 
          (az_lt + m).to_string() == "2003-Oct-28 05:00:00 MST");
      az_lt += m;
      check("Local += months", 
          az_lt.to_string() == "2003-Oct-28 05:00:00 MST");
      check("Local - months", 
          (az_lt - m).to_string() == "2003-Aug-28 05:00:00 MST");
      az_lt -= m;
      check("Local -= months", 
          az_lt.to_string() == "2003-Aug-28 05:00:00 MST");
      check("Local + years", 
          (az_lt + y).to_string() == "2005-Aug-28 05:00:00 MST");
      az_lt += y;
      check("Local += years", 
          az_lt.to_string() == "2005-Aug-28 05:00:00 MST");
      check("Local - years", 
          (az_lt - y).to_string() == "2003-Aug-28 05:00:00 MST");
      az_lt -= y;
      check("Local -= years", 
          az_lt.to_string() == "2003-Aug-28 05:00:00 MST");
      
#endif // BOOST_DATE_TIME_OPTIONAL_GREGORIAN_TYPES
    }
  }
  catch(std::exception& e) {
    check(std::string("test failed due to exception: ") + e.what(), false);
  }

  return printTestStats();
}