libcxx/test/std/time/time.duration/time.duration.special/max.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
   9 // <chrono>
  10
  11 // duration
  12
  13 // static constexpr duration max(); // noexcept after C++17
  14
  15 #include <chrono>
  16 #include <limits>
  17 #include <cassert>
  18
  19 #include "test_macros.h"
  20 #include "../../rep.h"
  21
  22 template <class D>
  23 void test()
  24 {
  25     LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<typename D::rep>::max());
  26 #if TEST_STD_VER > 17
  27     ASSERT_NOEXCEPT(       std::chrono::duration_values<typename D::rep>::max());
  28 #endif
  29     {
  30     typedef typename D::rep DRep;
  31     DRep max_rep = std::chrono::duration_values<DRep>::max();
  32     assert(D::max().count() == max_rep);
  33     }
  34 #if TEST_STD_VER >= 11
  35     {
  36     typedef typename D::rep DRep;
  37     constexpr DRep max_rep = std::chrono::duration_values<DRep>::max();
  38     static_assert(D::max().count() == max_rep, "");
  39     }
  40 #endif
  41 }
  42
  43 int main(int, char**)
  44 {
  45     test<std::chrono::duration<int> >();
  46     test<std::chrono::duration<Rep> >();
  47
  48   return 0;
  49 }