libcxx/test/std/time/time.cal/time.cal.operators/year_month.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 // UNSUPPORTED: c++03, c++11, c++14, c++17
   9
  10 // <chrono>
  11 // class year_month;
  12
  13 // constexpr year_month operator/(const year& y, const month& m) noexcept;
  14 //   Returns: {y, m}.
  15 //
  16 // constexpr year_month operator/(const year& y, int m) noexcept;
  17 //   Returns: y / month(m).
  18
  19 #include <chrono>
  20 #include <type_traits>
  21 #include <cassert>
  22
  23 #include "test_macros.h"
  24
  25 int main(int, char**)
  26 {
  27     using month      = std::chrono::month;
  28     using year       = std::chrono::year;
  29     using year_month = std::chrono::year_month;
  30
  31     constexpr month February = std::chrono::February;
  32
  33     { // operator/(const year& y, const month& m)
  34         ASSERT_NOEXCEPT (                     year{2018}/February);
  35         ASSERT_SAME_TYPE(year_month, decltype(year{2018}/February));
  36
  37         static_assert((year{2018}/February).year()  == year{2018}, "");
  38         static_assert((year{2018}/February).month() == month{2},   "");
  39         for (int i = 1000; i <= 1030; ++i)
  40             for (unsigned j = 1; j <= 12; ++j)
  41             {
  42                 year_month ym = year{i}/month{j};
  43                 assert(static_cast<int>(ym.year())       == i);
  44                 assert(static_cast<unsigned>(ym.month()) == j);
  45             }
  46     }
  47
  48
  49     { // operator/(const year& y, const int m)
  50         ASSERT_NOEXCEPT (                     year{2018}/4);
  51         ASSERT_SAME_TYPE(year_month, decltype(year{2018}/4));
  52
  53         static_assert((year{2018}/2).year()  == year{2018}, "");
  54         static_assert((year{2018}/2).month() == month{2},   "");
  55
  56         for (int i = 1000; i <= 1030; ++i)
  57             for (unsigned j = 1; j <= 12; ++j)
  58             {
  59                 year_month ym = year{i}/j;
  60                 assert(static_cast<int>(ym.year())       == i);
  61                 assert(static_cast<unsigned>(ym.month()) == j);
  62             }
  63     }
  64
  65   return 0;
  66 }