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/*!
@authors Andrei Novikov (pyclustering@yandex.ru)
@date 2014-2020
@copyright BSD-3-Clause
*/
#include <gtest/gtest.h>
#include <pyclustering/interface/metric_interface.h>
#include <pyclustering/interface/pyclustering_package.hpp>
#include <pyclustering/utils/metric.hpp>
#include "utenv_utils.hpp"
#include <memory>
using namespace pyclustering;
using namespace pyclustering::utils::metric;
TEST(utest_interface_metric, euclidean) {
std::shared_ptr<pyclustering_package> arguments = pack(std::vector<double>());
double (*p_solver)(const void *, const void *) = nullptr;
void * metric_pointer = metric_create(metric_t::EUCLIDEAN, arguments.get(), p_solver);
ASSERT_NE(nullptr, metric_pointer);
std::shared_ptr<pyclustering_package> point1 = pack(point({1.0, 1.0}));
std::shared_ptr<pyclustering_package> point2 = pack(point({2.0, 1.0}));
double distance = metric_calculate(metric_pointer, point1.get(), point2.get());
ASSERT_EQ(1.0, distance);
metric_destroy(metric_pointer);
}
TEST(utest_interface_metric, gower) {
std::shared_ptr<pyclustering_package> arguments = pack(std::vector<double>({1.0, 0.0}));
double (*p_solver)(const void *, const void *) = nullptr;
void * metric_pointer = metric_create(metric_t::GOWER, arguments.get(), p_solver);
ASSERT_NE(nullptr, metric_pointer);
std::shared_ptr<pyclustering_package> point1 = pack(point({1.0, 1.0}));
std::shared_ptr<pyclustering_package> point2 = pack(point({2.0, 1.0}));
double distance = metric_calculate(metric_pointer, point1.get(), point2.get());
ASSERT_EQ(0.5, distance);
metric_destroy(metric_pointer);
}
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