libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/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 month_day;
  12
  13 // constexpr chrono::month month() const noexcept;
  14 //  Returns: wd_
  15
  16 #include <chrono>
  17 #include <type_traits>
  18 #include <cassert>
  19
  20 #include "test_macros.h"
  21
  22 int main(int, char**)
  23 {
  24     using day       = std::chrono::day;
  25     using month     = std::chrono::month;
  26     using month_day = std::chrono::month_day;
  27
  28     ASSERT_NOEXCEPT(                 std::declval<const month_day>().month());
  29     ASSERT_SAME_TYPE(month, decltype(std::declval<const month_day>().month()));
  30
  31     static_assert( month_day{}.month() == month{}, "");
  32
  33     for (unsigned i = 1; i <= 50; ++i)
  34     {
  35         month_day md(month{i}, day{1});
  36         assert( static_cast<unsigned>(md.month()) == i);
  37     }
  38
  39   return 0;
  40 }