testdate_duration.cpp

boost库提供标准的C++ API 配合dev c++使用,功能更加强大

/* 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 or http://www.boost.org/LICENSE-1.0)
 * Author: Jeff Garland, Bart Garst
 */

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


void test_date_duration()
{
  using namespace boost::gregorian;
  
  date_duration threeDays(3);
  date_duration twoDays(2);
  //date_duration zeroDays(0);
  check("Self equal case",       threeDays == threeDays);
  check("Not equal case",        !(threeDays == twoDays));
  check("Less case succeed",     twoDays < threeDays);
  check("Not less case",         !(threeDays < twoDays));
  check("Not less case - equal", !(threeDays < threeDays));
  check("Greater than ",         !(threeDays > threeDays));
  check("Greater equal ",        threeDays >= threeDays);
  check("Greater equal - false", !(twoDays >= threeDays));
  check("add", twoDays + threeDays == date_duration(5));
  date_duration fiveDays = threeDays;
  fiveDays += twoDays;
  check("add", fiveDays == date_duration(5));
  date_duration tenDays = fiveDays;
  tenDays += date_duration(5);
  check("add", tenDays.days() == 10);
  
  date_duration derivedOneDay = threeDays - twoDays;
  check("Subtraction - neg result", twoDays - threeDays == date_duration(-1));
  date_duration oneDay(1);
  check("Subtraction",           oneDay == derivedOneDay);
  date_duration fiveDaysDerived = tenDays;
  fiveDaysDerived -= fiveDays;
  check("Subtraction",           fiveDaysDerived == fiveDays);

  oneDay = twoDays / 2;
  check("Division",           oneDay.days() == 1);
  date_duration oneDayDivide = threeDays / 2;
  check("Division",           oneDayDivide.days() == 1);
  date_duration hundred(100);
  hundred /= -10;
  check("Division",           hundred.days() == -10 && hundred.is_negative());

  date_duration pos_dur(123);
  date_duration neg_dur(-pos_dur);
  check("unary-", neg_dur.days() == -123);
  
  // special values tests
  date_duration pi_dur(pos_infin);
  date_duration ni_dur(neg_infin);
  date_duration nd_dur(not_a_date_time);
  check("pos_inf + neg_inf",  (pi_dur + ni_dur) == nd_dur);
  //check("inf * integer",    (pi_dur * 2) == pi_dur); // not implemented
  check("neg_inf / integer",  (ni_dur / 3) == ni_dur);
  check("inf + dur",          (pi_dur + hundred) == pi_dur);
  check("unary-",              date_duration(-pi_dur) == ni_dur);
 
//   date_duration dd(1);
//   dd++;
//   check("Increment",             dd == twoDays);

}

int main() {
  test_date_duration();
  return printTestStats();

}