testtime_input_facet.cpp

C++的一个好库。。。现在很流行

/* Copyright (c) 2005 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
 * $Date: 2005/07/17 23:58:33 $
 */

#include "boost/date_time/gregorian/gregorian.hpp"
#include "boost/date_time/posix_time/posix_time.hpp"
#include "boost/date_time/testfrmwk.hpp"
#include <iostream>
#include <sstream>
#include <string>
#include <vector>

// for tests that are expected to fail and throw exceptions
template<class temporal_type, class exception_type>
bool failure_test(temporal_type component,
                  const std::string& input,
                  exception_type /*except*/,
                  boost::posix_time::time_input_facet* facet)
{
  using namespace boost::posix_time;
  bool result = false;
  std::istringstream iss(input);
  iss.exceptions(std::ios_base::failbit); // turn on exceptions
  iss.imbue(std::locale(std::locale::classic(), facet));
  try {
    iss >> component;
  }
  catch(exception_type e) {
    std::cout << "Expected exception caught: \"" 
              << e.what() << "\"" << std::endl;
    result = iss.fail(); // failbit must be set to pass test
  }
  catch(...) {
    result = false;
  }

  return result;
}

// for tests that are expected to fail quietly
template<class temporal_type>
bool failure_test(temporal_type component,
                  const std::string& input,
                  boost::posix_time::time_input_facet* facet)
{
  using namespace boost::posix_time;
  std::istringstream iss(input);
  /* leave exceptions turned off
   * iss.exceptions(std::ios_base::failbit); */
  iss.imbue(std::locale(std::locale::classic(), facet));
  try {
    iss >> component;
  }
  catch(...) {
    std::cout << "Caught unexpected exception" << std::endl;
    return false;
  }

  return iss.fail(); // failbit must be set to pass test
}

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

void
do_all_tests()
{

#if defined(USE_DATE_TIME_PRE_1_33_FACET_IO) // skip this file
  check("No tests run for this compiler. Incompatible IO", true);
#else

  // set up initial objects
  time_duration td = hours(0);
  ptime pt(not_a_date_time);
  time_period tp(pt, td);
  // exceptions for failure_tests
  std::ios_base::failure e_failure("default");

  /* test ptime, time_duration, time_period.
   * test all formats.
   * test for bad input.
   * test special values.
   * do not test custom names (done in gregorian).
   *
   * format flags to test H,M,S,s,F,f,j
   */

  // default format tests: time_duration, ptime
  std::istringstream iss("09:59:01.321987654321 2005-Jan-15 10:15:03.123456789123");
  iss >> td;
  iss >> pt;
#if defined(BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG)
  check("Default format time_duration", td == time_duration(9,59,1,321987654));
  check("Default format ptime", pt == ptime(date(2005,01,15),time_duration(10,15,3,123456789)));
#else
  check("Default format time_duration", td == time_duration(9,59,1,321987));
  check("Default format ptime", pt == ptime(date(2005,01,15),time_duration(10,15,3,123456)));
#endif

  // test all flags that appear in time_input_facet
  iss.str("12:34:56 2005-Jan-15 12:34:56");
  iss >> td;
  iss >> pt;
  check("Default format time_duration no frac_sec", td == time_duration(12,34,56));
  // the following test insures %F parsing stops at the appropriate point
  check("Default format ptime", pt == ptime(date(2005,01,15),time_duration(12,34,56)));
  
  iss.str("14:13:12 extra stuff"); // using default %H:%M:%S%F format
  iss >> td;
  check("Default frac_sec format time_duration", td == time_duration(14,13,12));
  
  time_input_facet* facet = new time_input_facet();
  std::locale loc(std::locale::classic(), facet);
  facet->time_duration_format("%H:%M:%S%f");
  iss.imbue(loc);

  iss.str("14:13:12.0 extra stuff");
  iss >> td;
  check("Required-frac_sec format time_duration", td == time_duration(14,13,12));

  iss.str("12");
  facet->time_duration_format("%H");
  iss >> td;
  check("Hours format", td == hours(12));

  iss.str("05");
  facet->time_duration_format("%M");
  iss >> td;
  check("Minutes format", td == minutes(5));

  iss.str("45");
  facet->time_duration_format("%S");
  iss >> td;
  check("Seconds w/o frac_sec format", td == seconds(45));

  iss.str("10.01");
  facet->time_duration_format("%s");
  iss >> td;
#if defined(BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG)
  check("Seconds w/ frac_sec format", td == time_duration(0,0,10,10000000));
#else
  check("Seconds w/ frac_sec format", td == time_duration(0,0,10,10000));
#endif
  
  iss.str("2005-105T23:59");
  facet->format("%Y-%jT%H:%M"); // extended ordinal format
  iss >> pt;
  check("Extended Ordinal format", pt == ptime(date(2005,4,15),time_duration(23,59,0)));

  /* this is not implemented yet. The flags: %I & %p are not parsed
  iss.str("2005-Jun-14 03:15:00 PM");
  facet->format("%Y-%b-%d %I:%M:%S %p");
  iss >> pt;
  check("12 hour time format (AM/PM)", pt == ptime(date(2005,6,14),time_duration(15,15,0)));
  */

  iss.str("2005-Jun-14 15:15:00 %d");
  facet->format("%Y-%b-%d %H:%M:%S %%d");
  iss >> pt;
  check("Literal '%' in format", pt == ptime(date(2005,6,14),time_duration(15,15,0)));
  iss.str("15:15:00 %d");
  facet->time_duration_format("%H:%M:%S %%d");
  iss >> td;
  check("Literal '%' in time_duration format", td == time_duration(15,15,0));
  iss.str("2005-Jun-14 15:15:00 %14");
  facet->format("%Y-%b-%d %H:%M:%S %%%d"); // %% => % & %d => day_of_month
  iss >> pt;
  check("Multiple literal '%'s in format", pt == ptime(date(2005,6,14),time_duration(15,15,0)));
  iss.str("15:15:00 %15");
  facet->time_duration_format("%H:%M:%S %%%M");
  iss >> td;
  check("Multiple literal '%'s in time_duration format", td == time_duration(15,15,0));
 
  { /****** iso format tests (and custom 'scrunched-together formats) ******/
    time_input_facet *facet = new time_input_facet();
    facet->set_iso_format();
    facet->time_duration_format("%H%M%S%F"); // iso format
    std::stringstream ss;
    ss.imbue(std::locale(std::locale::classic(), facet));
    ptime pt(not_a_date_time);
    time_duration td(not_a_date_time);
    date d(2002,Oct,17);
#if defined(BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG)
    time_duration td2(23,12,17,123450000);
#else
    time_duration td2(23,12,17,123450);
#endif
    ptime result(d, td2);

    ss.str("20021017T231217.12345");
    ss >> pt;
    check("iso_format ptime", pt == result);
    ss.str("");
    facet->set_iso_extended_format();
    ss.str("2002-10-17 23:12:17.12345");
    ss >> pt;
    check("iso_extended_format ptime", pt == result);
    ss.str("");
    ss.str("231217.12345");
    ss >> td;
    check("iso_format time_duration", td == td2);
    ss.str("");
    ss.str("-infinity");
    ss >> td;
    check("iso_format time_duration (special_value)", 
        td == time_duration(neg_infin));
    ss.str("");
    // the above tests prove correct parsing of time values in these formats.
    // these tests show they also handle special_values & exceptions properly
    time_duration nadt(not_a_date_time);
    ss.exceptions(std::ios_base::failbit); // we need exceptions turned on here
    int count = 0;