libcxx/test/std/time/time.duration/time.duration.nonmember/op_times_rep.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 // template <class Rep1, class Period, class Rep2>
  14 //   constexpr
  15 //   duration<typename common_type<Rep1, Rep2>::type, Period>
  16 //   operator*(const duration<Rep1, Period>& d, const Rep2& s);
  17
  18 // template <class Rep1, class Period, class Rep2>
  19 //   constexpr
  20 //   duration<typename common_type<Rep1, Rep2>::type, Period>
  21 //   operator*(const Rep1& s, const duration<Rep2, Period>& d);
  22
  23 #include <chrono>
  24 #include <cassert>
  25
  26 #include "test_macros.h"
  27 #include "../../rep.h"
  28
  29 int main(int, char**) {
  30   {
  31     std::chrono::nanoseconds ns(3);
  32     ns = ns * 5;
  33     assert(ns.count() == 15);
  34     ns = 6 * ns;
  35     assert(ns.count() == 90);
  36   }
  37
  38 #if TEST_STD_VER >= 11
  39   {
  40     constexpr std::chrono::nanoseconds ns(3);
  41     constexpr std::chrono::nanoseconds ns2 = ns * 5;
  42     static_assert(ns2.count() == 15, "");
  43     constexpr std::chrono::nanoseconds ns3 = 6 * ns;
  44     static_assert(ns3.count() == 18, "");
  45   }
  46 #endif
  47
  48 #if TEST_STD_VER >= 11
  49   { // This is related to PR#41130
  50     typedef std::chrono::nanoseconds Duration;
  51     Duration d(5);
  52     NotARep n;
  53     ASSERT_SAME_TYPE(Duration, decltype(d * n));
  54     ASSERT_SAME_TYPE(Duration, decltype(n * d));
  55     d = d * n;
  56     assert(d.count() == 5);
  57     d = n * d;
  58     assert(d.count() == 5);
  59   }
  60   {
  61     std::chrono::duration<int> d(8);
  62     RepConstConvertibleLWG3050 x;
  63
  64     {
  65       auto r = d * x;
  66       assert(r.count() == 16);
  67       ASSERT_SAME_TYPE(std::chrono::duration<long>, decltype(r));
  68     }
  69     {
  70       auto r = x * d;
  71       assert(r.count() == 16);
  72       ASSERT_SAME_TYPE(std::chrono::duration<long>, decltype(r));
  73     }
  74   }
  75 #endif // TEST_STD_VER >= 11
  76
  77   return 0;
  78 }