forked from boostorg/beast
75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
//
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// Copyright (c) 2013-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// Test that header file is self-contained.
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#include <beast/core/detail/get_lowest_layer.hpp>
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#include <type_traits>
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namespace beast {
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namespace detail {
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struct F1
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{
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};
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struct F2
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{
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};
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template<class F>
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struct F3
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{
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using next_layer_type =
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typename std::remove_reference<F>::type;
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using lowest_layer_type = typename
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get_lowest_layer<next_layer_type>::type;
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};
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template<class F>
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struct F4
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{
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using next_layer_type =
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typename std::remove_reference<F>::type;
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using lowest_layer_type = typename
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get_lowest_layer<next_layer_type>::type;
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};
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static_assert(! has_lowest_layer<F1>::value, "");
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static_assert(! has_lowest_layer<F2>::value, "");
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static_assert(has_lowest_layer<F3<F1>>::value, "");
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static_assert(has_lowest_layer<F4<F3<F2>>>::value, "");
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static_assert(std::is_same<
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get_lowest_layer<F1>::type, F1>::value, "");
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static_assert(std::is_same<
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get_lowest_layer<F2>::type, F2>::value, "");
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static_assert(std::is_same<
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get_lowest_layer<F3<F1>>::type, F1>::value, "");
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static_assert(std::is_same<
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get_lowest_layer<F3<F2>>::type, F2>::value, "");
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static_assert(std::is_same<
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get_lowest_layer<F4<F1>>::type, F1>::value, "");
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static_assert(std::is_same<
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get_lowest_layer<F4<F2>>::type, F2>::value, "");
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static_assert(std::is_same<
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get_lowest_layer<F4<F3<F1>>>::type, F1>::value, "");
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static_assert(std::is_same<
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get_lowest_layer<F4<F3<F2>>>::type, F2>::value, "");
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} // detail
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} // beast
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