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Diffstat (limited to '')
-rw-r--r-- | src/boost/libs/hana/test/ext/std/integral_constant/tag.cpp | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/ext/std/integral_constant/tag.cpp b/src/boost/libs/hana/test/ext/std/integral_constant/tag.cpp new file mode 100644 index 000000000..8a747e441 --- /dev/null +++ b/src/boost/libs/hana/test/ext/std/integral_constant/tag.cpp @@ -0,0 +1,53 @@ +// Copyright Louis Dionne 2013-2017 +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) + +#include <boost/hana/ext/std/integral_constant.hpp> + +#include <boost/hana/core/tag_of.hpp> + +#include <type_traits> +namespace hana = boost::hana; + + +struct inherit_simple : std::integral_constant<int, 3> { }; +struct inherit_no_default : std::integral_constant<int, 3> { + inherit_no_default() = delete; +}; + +struct incomplete; +struct empty_type { }; +struct non_pod { virtual ~non_pod() { } }; + + +static_assert(std::is_same< + hana::tag_of_t<inherit_simple>, + hana::ext::std::integral_constant_tag<int> +>{}, ""); +static_assert(std::is_same< + hana::tag_of_t<inherit_no_default>, + hana::ext::std::integral_constant_tag<int> +>{}, ""); +static_assert(std::is_same< + hana::tag_of_t<std::is_pointer<int*>>, + hana::ext::std::integral_constant_tag<bool> +>{}, ""); + +static_assert(!std::is_same< + hana::tag_of_t<incomplete>, + hana::ext::std::integral_constant_tag<int> +>{}, ""); +static_assert(!std::is_same< + hana::tag_of_t<empty_type>, + hana::ext::std::integral_constant_tag<int> +>{}, ""); +static_assert(!std::is_same< + hana::tag_of_t<non_pod>, + hana::ext::std::integral_constant_tag<int> +>{}, ""); +static_assert(!std::is_same< + hana::tag_of_t<void>, + hana::ext::std::integral_constant_tag<int> +>{}, ""); + +int main() { } |