Function test_awaitable_in_stdexec_task

test/exec/asio/test_use_sender.cpp:275–278

#if !STDEXEC_NO_STDCPP_COROUTINES()
  template <typename Timer>
  ::STDEXEC::task<void> test_awaitable_in_stdexec_task(Timer& timer)
  {
    co_await timer.async_wait(::asio_impl::as_tuple(exec::asio::use_sender));
  }

  TEST_CASE("Can await an Asio-based asynchronous operation which uses use_sender as its "
            "completion token from a stdexec task",