test_type_list.cpp

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#include "gtest/gtest.h"
 
#include "kokkos-utils/impl/type_list.hpp"

 
namespace Kokkos::utils::tests::impl
{
 
using type_list_t = Kokkos::Impl::type_list<char, short, int>;

TEST(impl, type_list_size_v)
{
    using Kokkos::utils::impl::type_list_size_v;
 
    using type_list_empty_t = Kokkos::Impl::type_list<>;
    static_assert(type_list_size_v<type_list_empty_t> == 0);
 
    static_assert(type_list_size_v<type_list_t> == 3);
}

TEST(impl, type_list_contains_v)
{
    using Kokkos::utils::impl::type_list_contains_v;
 
    static_assert(   type_list_contains_v<char,   type_list_t>);
    static_assert( ! type_list_contains_v<double, type_list_t>);
}

TEST(impl, type_list_at_t)
{
    using Kokkos::utils::impl::type_list_at_t;
 
    static_assert(std::same_as<type_list_at_t<0, type_list_t>, char>);
    static_assert(std::same_as<type_list_at_t<1, type_list_t>, short>);
    static_assert(std::same_as<type_list_at_t<2, type_list_t>, int>);
}

template <typename T>
struct VectorOfTransformer
{
    using type = std::vector<T>;
};

TEST(impl, transform_type_list_t)
{
    using Kokkos::utils::impl::transform_type_list_t;
 
    using transformed_type_list_t = transform_type_list_t<VectorOfTransformer, type_list_t>;
 
    using expt_transformed_type_list_t = Kokkos::Impl::type_list<std::vector<char>, std::vector<short>, std::vector<int>>;
 
    static_assert(std::same_as<transformed_type_list_t, expt_transformed_type_list_t>);
}

TEST(impl, type_list_to_tuple)
{
    using Kokkos::utils::impl::type_list_to_tuple_t;
 
    using expt_tuple_t = std::tuple<char, short, int>;
 
    static_assert(std::same_as<type_list_to_tuple_t<type_list_t>, expt_tuple_t>);
}

TEST(impl, type_list_index_v)
{
    using Kokkos::utils::impl::type_list_index_v;
 
    static_assert(type_list_index_v<char,  type_list_t> == 0);
    static_assert(type_list_index_v<short, type_list_t> == 1);
    static_assert(type_list_index_v<int,   type_list_t> == 2);
}

TEST(impl, for_each)
{
    using Kokkos::utils::impl::for_each;
 
    static_assert([]() {
        size_t sum_of_sizes = 0;
 
        for_each<type_list_t>([&] <typename T>() constexpr {
            sum_of_sizes += sizeof(T);
        });
 
        return sum_of_sizes == sizeof(char) + sizeof(short) + sizeof(int);
    }());
}
 
} // namespace Kokkos::utils::tests::impl