libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.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 year_month_weekday_last;
  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 year                    = std::chrono::year;
  25     using month                   = std::chrono::month;
  26     using weekday                 = std::chrono::weekday;
  27     using weekday_last            = std::chrono::weekday_last;
  28     using year_month_weekday_last = std::chrono::year_month_weekday_last;
  29
  30     ASSERT_NOEXCEPT(                 std::declval<const year_month_weekday_last>().month());
  31     ASSERT_SAME_TYPE(month, decltype(std::declval<const year_month_weekday_last>().month()));
  32
  33     static_assert( year_month_weekday_last{year{}, month{}, weekday_last{weekday{}}}.month() == month{}, "");
  34
  35     for (unsigned i = 1; i <= 50; ++i)
  36     {
  37         year_month_weekday_last ymd(year{1234}, month{i}, weekday_last{weekday{}});
  38         assert( static_cast<unsigned>(ymd.month()) == i);
  39     }
  40
  41   return 0;
  42 }