#include <tug/Core/TugUtils.hpp>

#include <doctest/doctest.h>
#include <limits>

TEST_CASE("Maths") {
  SUBCASE("mean between two alphas") {
    double alpha1 = 10;
    double alpha2 = 20;
    double average = 15;
    double harmonicMean =
        double(2) / ((double(1) / alpha1) + (double(1) / alpha2));

    // double difference = std::fabs(calcAlphaIntercell(alpha1, alpha2) -
    // harmonicMean); CHECK(difference <
    // std::numeric_limits<double>::epsilon());
    CHECK_EQ(calcAlphaIntercell(alpha1, alpha2), harmonicMean);
    CHECK_EQ(calcAlphaIntercell(alpha1, alpha2, false), average);
  }
}