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/*!
@authors Andrei Novikov (pyclustering@yandex.ru)
@date 2014-2020
@copyright BSD-3-Clause
*/
#include <gtest/gtest.h>
#include <algorithm>
#include <pyclustering/utils/linalg.hpp>
using namespace pyclustering::utils::linalg;
TEST(utest_lingalg, subtract) {
std::vector<double> a = { 2, 3, 4, 5 };
std::vector<double> b = { 1, 2, 3, 4 };
auto result = subtract(a, b);
std::vector<double> expected = { 1, 1, 1, 1 };
ASSERT_EQ(expected, result);
}
TEST(utest_lingalg, subtract_with_number) {
std::vector<double> a = { 2, 4, 6, 8 };
auto result = subtract(a, 2);
std::vector<double> expected = { 0, 2, 4, 6 };
ASSERT_EQ(expected, result);
}
TEST(utest_lingalg, multiply) {
std::vector<double> a = { 2, 3, 4, 5 };
std::vector<double> b = { 1, 2, 3, 4 };
auto result = multiply(a, b);
std::vector<double> expected = { 2, 6, 12, 20 };
ASSERT_EQ(expected, result);
}
TEST(utest_lingalg, multiply_with_number) {
std::vector<double> a = { 2, 3, 4, 5 };
auto result = multiply(a, 2);
std::vector<double> expected = { 4, 6, 8, 10 };
ASSERT_EQ(expected, result);
}
TEST(utest_lingalg, multiply_matrix) {
matrix a = { { 1, 1 }, { 2, 2 }, { 3, 3 } };
std::vector<double> b = { 2, 2 };
auto result = multiply(a, b);
matrix expected = { { 2, 2 }, { 4, 4 }, { 6, 6 } };
ASSERT_EQ(expected, result);
}
TEST(utest_lingalg, divide) {
std::vector<double> a = { 2, 6, 9, 16 };
std::vector<double> b = { 2, 2, 3, 4 };
auto result = divide(a, b);
std::vector<double> expected = { 1, 3, 3, 4 };
ASSERT_EQ(expected, result);
}
TEST(utest_lingalg, divide_with_number) {
std::vector<double> a = { 10, 20, 30, 40 };
auto result = divide(a, 5);
std::vector<double> expected = { 2, 4, 6, 8 };
ASSERT_EQ(expected, result);
}
TEST(utest_linalg, sum_vector) {
std::vector<double> a = { 1, 2, 3 };
ASSERT_EQ(6, sum(a));
}
TEST(utest_linalg, sum_matrix) {
matrix a = { { 1, 1 }, { 2, 2 }, { 3, 3 } };
std::vector<double> expected = { 6, 6 };
ASSERT_EQ(expected, sum(a, 0));
expected = { 2, 4, 6 };
ASSERT_EQ(expected, sum(a, 1));
}
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