testlocal_time.cpp

C++的一个好库。。。现在很流行

/* Copyright (c) 2003-2005 CrystalClear Software, Inc.
 * Subject to the Boost Software License, Version 1.0. 
 * (See accompanying file LICENSE-1.0 or http://www.boost.org/LICENSE-1.0)
 * Author: Jeff Garland, Bart Garst
 * $Date: 2005/05/26 12:37:49 $
 */


#include "boost/date_time/local_time/custom_time_zone.hpp"
#include "boost/date_time/posix_time/posix_time.hpp"
#include "boost/date_time/local_time/local_time.hpp"
// #include "boost/date_time/local_time/posix_time_zone.hpp"
#include "boost/date_time/testfrmwk.hpp"
//#include "boost/date_time/c_time.hpp"
#include <iostream>

#include <sstream>
// function eases testing
std::string tm_out(const tm& ptr){
  std::stringstream ss;

  ss 
    << ptr.tm_wday << ' ' << ptr.tm_yday << ' '
    << std::setw(2) << std::setfill('0') << ptr.tm_mon + 1 << '/'
    << std::setw(2) << std::setfill('0') << ptr.tm_mday << '/'
    << std::setw(2) << std::setfill('0') << ptr.tm_year + 1900 << ' '
    << std::setw(2) << std::setfill('0') << ptr.tm_hour << ':'
    << std::setw(2) << std::setfill('0') << ptr.tm_min << ':'
    << std::setw(2) << std::setfill('0') << ptr.tm_sec << ' ';
  if(ptr.tm_isdst >= 0){
    ss << (ptr.tm_isdst ? "DST" : "STD");
  }
  else{
    ss << "DST/STD unknown";
  }
  return ss.str();
}

int
main()
{

  using namespace boost::gregorian;
  using namespace boost::posix_time;
  using namespace boost::local_time;

  // since local_date_time inherits it's math operations from time, the 
  // tests here only show that the operations work. The thorough testing
  // of these operations is done in the posix_time tests

  try {
    time_zone_ptr az_tz(new posix_time_zone("MST-07"));
    time_zone_ptr ny_tz(new posix_time_zone("EST-05EDT,M4.1.0,M10.5.0"));
    // EST & EST for sydney is correct, according to zoneinfo files
    time_zone_ptr sydney(new posix_time_zone("EST+10EST,M10.5.0,M3.5.0/03:00"));
    time_zone_ptr null_tz;
    date d(2003, 12, 20);
    hours h(12);
    ptime t(d,h);
    local_date_time az_time(t, az_tz); // ptime constructor is a UTC time
    
    check("Zone abbreviation", az_time.zone()->std_zone_abbrev() == std::string("MST"));
    check("base offset", az_time.zone()->base_utc_offset() == hours(-7));
    check("zone has dst", az_time.zone()->has_dst() == false);
    check("is_dst check", az_time.is_dst() == false);
    check("to_string: " + az_time.to_string(), 
          az_time.to_string() == "2003-Dec-20 05:00:00 MST");
   

    
    std::cout << "\nChecking copy construction" << std::endl;
    local_date_time az_time2(az_time); //copy constructor
    // Now test the copy
    check("is_dst check", az_time2.is_dst() == false);
    check("to_string: " + az_time2.to_string(), 
          az_time2.to_string() == "2003-Dec-20 05:00:00 MST");
    check("zone has dst", az_time2.zone()->has_dst() == false);
    check("base offset", az_time2.zone()->base_utc_offset() == hours(-7));
    

    std::cout << "\nChecking special_value construction" << std::endl;
    // since local_date_time inherits its special value operatorations 
    // from time, we only need to show here that they work as thorough 
    // testing is done in the posix_time tests
    ptime svpt(not_a_date_time);
    local_date_time sv_time(svpt, ny_tz);
    check("is special_value", sv_time.is_not_a_date_time());
    check("to_string: " + sv_time.to_string(), 
          sv_time.to_string() == "not-a-date-time");
    check("is_dst", sv_time.is_dst() == false);
    local_date_time sv_time2(pos_infin);
    check("is special_value", sv_time2.is_pos_infinity());
    check("to_string: " + sv_time2.to_string(), 
          sv_time2.to_string() == "+infinity");
    check("is_dst", sv_time2.is_dst() == false);
    sv_time2 += days(12); // add a duration to a special value
    check("Add a duration to a special value", sv_time2.is_pos_infinity());

    local_date_time sv_time3(max_date_time, ny_tz);
#ifdef BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
    check("max_date_time to_string: " + sv_time3.to_string(), 
          sv_time3.to_string() == "9999-Dec-31 18:59:59.999999999 EST");
#else
    check("max_date_time to_string: " + sv_time3.to_string(), 
          sv_time3.to_string() == "9999-Dec-31 18:59:59.999999 EST");
#endif

    try {
      local_date_time sv_time4(min_date_time);
      check("min_date_time to_string: " + sv_time4.to_string(), 
            sv_time4.to_string() == "1400-Jan-01 00:00:00 UTC");
    }
    catch (std::exception& e) {
      check("min_date_time to_string -- exception" , false);
      std::cout << "Exception is : " << e.what() << std::endl;
    }

/** todo  -- this will cause an out of range when min_date is adjusted for ny_tz
    local_date_time sv_time5(min_date_time, ny_tz);
    std::cout << sv_time5.to_string() << std::endl;
**/

    std::cout << "\nChecking calc_options construction" << std::endl;
    { // invalid NADT
      date d(2004, Apr, 4);
      time_duration td(2,30,0); // invalid local time in ny_tz
      local_date_time calcop(d, td, ny_tz, local_date_time::NOT_DATE_TIME_ON_ERROR);
      check("is NADT", calcop.is_not_a_date_time());
    }
    { // invalid exception
      date d(2004, Apr, 4);
      time_duration td(2,30,0); // invalid local time in ny_tz
      try{
        local_date_time calcop(d, td, ny_tz, local_date_time::EXCEPTION_ON_ERROR);
        check("Did not catch expected exception", false);
      }catch(time_label_invalid& /*i*/){
        check("Caught expected exception", true);
      }catch(...){
        check("Caught unexpected exception", false);
      }
    }
    { // ambig NADT
      date d(2004, Oct, 31);
      time_duration td(1,30,0); // ambig local time in ny_tz
      local_date_time calcop(d, td, ny_tz, local_date_time::NOT_DATE_TIME_ON_ERROR);
      check("is NADT", calcop.is_not_a_date_time());
    }
    { // ambig exception
      date d(2004, Oct, 31);
      time_duration td(1,30,0); // ambig local time in ny_tz
      try{
        local_date_time calcop(d, td, ny_tz, local_date_time::EXCEPTION_ON_ERROR);
        check("Did not catch expected exception", false);
      }catch(ambiguous_result& /*a*/){
        check("Caught expected exception", true);
      }catch(...){
        check("Caught unexpected exception", false);
      }
    }

    
    //Now construct with a date and time
    std::cout << "\nChecking construct with date and time_duration" << std::endl;
    local_date_time az_time3(d, h, az_tz, false);
    check("Zone abbreviation", az_time3.zone()->std_zone_abbrev() == std::string("MST"));
    check("base offset", az_time3.zone()->base_utc_offset() == hours(-7));
    check("base offset", az_time3.zone()->has_dst() == false);
    check("is_dst check", az_time3.is_dst() == false);
    check("to_string: " + az_time3.to_string(), 
          az_time3.to_string() == "2003-Dec-20 12:00:00 MST");
    
    // construct with a null tz
    //local_date_time null_tz_time(d, h, null_tz, false);
    local_date_time null_tz_time(d, h, null_tz, true);
    // TODO: how to handle calls to null_tz_time.zone()->...
    check("is_dst check", null_tz_time.is_dst() == false);
    check("to_string: " + null_tz_time.to_string(), 
          null_tz_time.to_string() == "2003-Dec-20 12:00:00 UTC");
    
    //Now construct with a date and time - invalid parameters
    try{
      local_date_time blt(d, h, ny_tz, true);
      check("Did not catch expected exception (dst_not_valid)", false);
    }catch(dst_not_valid& d){
      check(std::string("Caught expected exception (dst_not_valid) ") + d.what(), true);