Helpers.hpp

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#ifndef KOKKOS_UTILS_CALLBACKS_HELPERS_HPP
#define KOKKOS_UTILS_CALLBACKS_HELPERS_HPP
 
#include "gmock/gmock.h"
 
#include "kokkos-utils/callbacks/Manager.hpp"
 
namespace Kokkos::utils::callbacks
{
 
class ManagerTestFixture : public virtual ::testing::Test
{
public:
    ManagerTestFixture()  { Kokkos::utils::callbacks::Manager::initialize(); }
    ~ManagerTestFixture() { Kokkos::utils::callbacks::Manager::finalize(); }
};
 
#define TEST_F_WITH_CB_MGR(__test_fixture_name__, __test_name__) \
    class __test_fixture_name__ : public ManagerTestFixture {};  \
    TEST_F(__test_fixture_name__, __test_name__)
 
#define DEFINE_EVENT_MATCHER(__eventtype__)                                                                  \
    template <typename... Matchers>                                                                          \
    auto A##__eventtype__(Matchers&&... matchers)                                                            \
    {                                                                                                        \
        using EventType = Kokkos::utils::callbacks::__eventtype__;                                           \
        if constexpr (sizeof...(Matchers) == 0)                                                              \
            return ::testing::VariantWith<EventType>(::testing::_);                                          \
        else                                                                                                 \
            return ::testing::VariantWith<EventType>(::testing::AllOf(std::forward<Matchers>(matchers)...)); \
    }
 
DEFINE_EVENT_MATCHER(BeginParallelForEvent)
DEFINE_EVENT_MATCHER(EndParallelForEvent)
DEFINE_EVENT_MATCHER(BeginParallelReduceEvent)
DEFINE_EVENT_MATCHER(EndParallelReduceEvent)
DEFINE_EVENT_MATCHER(BeginParallelScanEvent)
DEFINE_EVENT_MATCHER(EndParallelScanEvent)
DEFINE_EVENT_MATCHER(BeginFenceEvent)
DEFINE_EVENT_MATCHER(EndFenceEvent)
DEFINE_EVENT_MATCHER(AllocateDataEvent)
DEFINE_EVENT_MATCHER(DeallocateDataEvent)
DEFINE_EVENT_MATCHER(CreateProfileSectionEvent)
DEFINE_EVENT_MATCHER(DestroyProfileSectionEvent)
DEFINE_EVENT_MATCHER(StartProfileSectionEvent)
DEFINE_EVENT_MATCHER(StopProfileSectionEvent)
DEFINE_EVENT_MATCHER(PushRegionEvent)
DEFINE_EVENT_MATCHER(PopRegionEvent)
DEFINE_EVENT_MATCHER(ProfileEvent)
 
#define DEFINE_EVENT_WITH_NAME_MATCHER(__eventtype__)                                                                 \
    template <typename Matcher>                                                                                       \
    auto A##__eventtype__##WithName(Matcher&& matcher)                                                                \
    {                                                                                                                 \
        using EventType = Kokkos::utils::callbacks::__eventtype__;                                                    \
        return ::testing::VariantWith<EventType>(::testing::Field(&EventType::name, std::forward<Matcher>(matcher))); \
    }
 
DEFINE_EVENT_WITH_NAME_MATCHER(BeginParallelForEvent)
DEFINE_EVENT_WITH_NAME_MATCHER(BeginParallelReduceEvent)
DEFINE_EVENT_WITH_NAME_MATCHER(BeginParallelScanEvent)
DEFINE_EVENT_WITH_NAME_MATCHER(BeginFenceEvent)
DEFINE_EVENT_WITH_NAME_MATCHER(CreateProfileSectionEvent)
DEFINE_EVENT_WITH_NAME_MATCHER(PushRegionEvent)
DEFINE_EVENT_WITH_NAME_MATCHER(ProfileEvent)
 
namespace impl
{
 
template <typename T, typename... Matchers>
class ContainsInOrderMatcher
{
public:
    template <typename... Matchers_> requires std::conjunction_v<std::is_same<std::remove_cvref_t<Matchers_>, Matchers>...>
    explicit ContainsInOrderMatcher(Matchers_&&... matchers_)
      : matchers{std::forward<Matchers_>(matchers_)...} {}
 
    template <typename IterableType>
    bool MatchAndExplain([[maybe_unused]]const IterableType& arg, [[maybe_unused]]::testing::MatchResultListener* const listener) const
    {
        if constexpr(sizeof...(Matchers) == 0) {
            return true;
        } else {
            return MatchAndExplainImpl<0>(arg.cbegin(), arg.cend(), listener);
        }
    }
 
    void DescribeTo(std::ostream* out) const
    {
        *out << "contains in order elements that match ";
        DescribeInnerMatchersImpl(out);
    }
 
    void DescribeNegationTo(std::ostream* out) const
    {
        *out << "does not contain in order elements that match ";
        DescribeInnerMatchersImpl(out);
    }
 
private:
    template <size_t Idx, typename IteratorType>
    bool MatchAndExplainImpl(const IteratorType it_first, const IteratorType it_last, ::testing::MatchResultListener* const listener) const
    {
        if (it_first == it_last) {;
            *listener << "does not contain in order an element that "
                      << ::testing::DescribeMatcher<T>(std::get<Idx>(matchers), false);
            return false;
        }
 
        if (::testing::Matches(std::get<Idx>(matchers))(*it_first)) {
            if constexpr (Idx == sizeof...(Matchers) - 1) {
                return true;
            } else {
                return MatchAndExplainImpl<Idx + 1>(std::next(it_first), it_last, listener);
            }
        } else {
            return MatchAndExplainImpl<Idx>(std::next(it_first), it_last, listener);
        }
    }
 
    void DescribeInnerMatchersImpl(std::ostream* out) const
    {
        *out << "(";
        if constexpr (sizeof...(Matchers) >= 2)
        {
            [&] <size_t... Idxs>(std::index_sequence<Idxs...>) {
                ((*out << ::testing::DescribeMatcher<T>(std::get<Idxs>(matchers), false) << ", "), ...);
            }(std::make_index_sequence<sizeof...(Matchers) - 1>{});
        }
        if constexpr (sizeof...(Matchers) >= 1)
            *out << ::testing::DescribeMatcher<T>(std::get<sizeof...(Matchers) - 1>(matchers), false);
        *out << ")";
    }
 
private:
    std::tuple<Matchers...> matchers;
};
 
} // namespace impl
 
template <typename T, typename... Matchers>
auto ContainsInOrder(Matchers&&... matchers) {
    return ::testing::MakePolymorphicMatcher(impl::ContainsInOrderMatcher<T, std::remove_cvref_t<Matchers>...>(std::forward<Matchers>(matchers)...));
}
 
} // namespace Kokkos::utils::callbacks
 
#endif // KOKKOS_UTILS_CALLBACKS_HELPERS_HPP