libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/index.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 weekday_indexed;
  12
  13 // constexpr unsigned index() const noexcept;
  14 //  Returns: index_
  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 weekday         = std::chrono::weekday;
  25     using weekday_indexed = std::chrono::weekday_indexed;
  26
  27     ASSERT_NOEXCEPT(                    std::declval<const weekday_indexed>().index());
  28     ASSERT_SAME_TYPE(unsigned, decltype(std::declval<const weekday_indexed>().index()));
  29
  30     static_assert( weekday_indexed{}.index() == 0, "");
  31
  32     // This is the valid range of values defined in [time.cal.wdidx.members]/1.
  33     for (unsigned i = 0; i <= 7; ++i)
  34     {
  35         weekday_indexed wdi(weekday{2}, i);
  36         assert( static_cast<unsigned>(wdi.index()) == i);
  37     }
  38
  39   return 0;
  40 }