libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.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_weekday_last;
  12
  13 // constexpr bool ok() const noexcept;
  14 //  Returns: m_.ok() && wdl_.ok().
  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     using weekday            = std::chrono::weekday;
  26     using weekday_last       = std::chrono::weekday_last;
  27     using month_weekday_last = std::chrono::month_weekday_last;
  28
  29     constexpr month January            = std::chrono::January;
  30     constexpr weekday Tuesday          = std::chrono::Tuesday;
  31     constexpr weekday_last lastTuesday = weekday_last{Tuesday};
  32
  33     ASSERT_NOEXCEPT(                std::declval<const month_weekday_last>().ok());
  34     ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_weekday_last>().ok()));
  35
  36     static_assert(!month_weekday_last{month{}, lastTuesday}.ok(),               ""); // Bad month
  37     static_assert(!month_weekday_last{January, weekday_last{weekday{12}}}.ok(), ""); // Bad month
  38     static_assert( month_weekday_last{January, lastTuesday}.ok(),               ""); // Both OK
  39
  40     for (unsigned i = 0; i <= 50; ++i)
  41     {
  42         month_weekday_last mwdl{month{i}, lastTuesday};
  43         assert( mwdl.ok() == month{i}.ok());
  44     }
  45
  46     for (unsigned i = 0; i <= 50; ++i)
  47     {
  48         month_weekday_last mwdl{January, weekday_last{weekday{i}}};
  49         assert( mwdl.ok() == weekday_last{weekday{i}}.ok());
  50     }
  51
  52   return 0;
  53 }