// SPDX-FileCopyrightText: 2024 Filip Leonarski, Paul Scherrer Institute <filip.leonarski@psi.ch>
// SPDX-License-Identifier: GPL-3.0-only

#include <catch2/catch_all.hpp>
#include "../common/CorrelationCoefficient.h"

TEST_CASE("CorrelationCoefficient") {
    CorrelationCoefficient cc;
    CHECK(std::isnan(cc.GetCC()));

    cc.Add(100.0, 500.0);
    CHECK(std::isnan(cc.GetCC()));

    cc.Add(200.0, 1000.0);
    CHECK(cc.GetCC() == Catch::Approx(1.0));

    cc.Add(300.0, 1500.0);
    CHECK(cc.GetCC() == Catch::Approx(1.0));

    cc.Add(400.0, 2000.0);
    CHECK(cc.GetCC() == Catch::Approx(1.0));
}