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libs/date_time/test/gregorian/testdate_duration.cpp

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+/* 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.txt or http://www.boost.org/LICENSE_1_0.txt)
+ * Author: Jeff Garland, Bart Garst
+ */
+
+#include "boost/date_time/gregorian/gregorian.hpp"
+#include "../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();
+
+}
+