libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/ok.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;
  12
  13 // constexpr bool ok() const noexcept;
  14 //  Returns: 1 <= d_ && d_ <= 12
  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 month = std::chrono::month;
  25
  26     ASSERT_NOEXCEPT(                std::declval<const month>().ok());
  27     ASSERT_SAME_TYPE(bool, decltype(std::declval<const month>().ok()));
  28
  29     static_assert(!month{0}.ok(), "");
  30     static_assert( month{1}.ok(), "");
  31
  32     assert(!month{0}.ok());
  33     for (unsigned i = 1; i <= 12; ++i)
  34         assert(month{i}.ok());
  35     for (unsigned i = 13; i <= 255; ++i)
  36         assert(!month{i}.ok());
  37
  38   return 0;
  39 }