diff options
Diffstat (limited to '3rdparty/asio/src/tests/properties/cpp11/can_prefer_not_preferable_unsupported.cpp')
-rw-r--r-- | 3rdparty/asio/src/tests/properties/cpp11/can_prefer_not_preferable_unsupported.cpp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/3rdparty/asio/src/tests/properties/cpp11/can_prefer_not_preferable_unsupported.cpp b/3rdparty/asio/src/tests/properties/cpp11/can_prefer_not_preferable_unsupported.cpp new file mode 100644 index 00000000000..059944ece37 --- /dev/null +++ b/3rdparty/asio/src/tests/properties/cpp11/can_prefer_not_preferable_unsupported.cpp @@ -0,0 +1,43 @@ +// +// cpp11/can_prefer_not_preferable_unsupported.cpp +// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +#include "asio/prefer.hpp" +#include <cassert> + +template <int> +struct prop +{ + static constexpr bool is_preferable = false; +}; + +template <int> +struct object +{ +}; + +namespace asio { + +template<int N, int M> +struct is_applicable_property<object<N>, prop<M> > +{ + static constexpr bool value = true; +}; + +} // namespace asio + +int main() +{ + static_assert(!asio::can_prefer<object<1>, prop<2>>::value, ""); + static_assert(!asio::can_prefer<object<1>, prop<2>, prop<3>>::value, ""); + static_assert(!asio::can_prefer<object<1>, prop<2>, prop<3>, prop<4>>::value, ""); + static_assert(!asio::can_prefer<const object<1>, prop<2>>::value, ""); + static_assert(!asio::can_prefer<const object<1>, prop<2>, prop<3>>::value, ""); + static_assert(!asio::can_prefer<const object<1>, prop<2>, prop<3>, prop<4>>::value, ""); +} |