observablestimeseries2d_tests.cpp

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/**
 * @file observablestimeseries2d_tests.cpp
 * @brief Implements regression and invariant tests for observablestimeseries2d tests.
 * @ingroup qpe_tests
 *
 * Source: @c tests/observablestimeseries2d_tests.cpp. This file is part of Quantum Phenomena Explorer (QPE),
 * maintained by Officina Turini. See LICENSE_IT.txt / LICENSE.txt for the
 * QPE freeware source-available terms and THIRD_PARTY_NOTICES.txt for
 * third-party components.
 */
 
#include "observablestimeseries2d_tests.h"
 
#include "core/quantum/observablestimeseries2d.h"
 
#include <cmath>
#include <exception>
 
namespace qpe {
namespace tests {
 
/**
 * @brief Runs observables time series2 d tests.
 * @param error Output diagnostic text on failure.
 */
bool runObservablesTimeSeries2DTests(std::string &error)
{
    try {
        ObservablesTimeSeries2D history(3u);
        for (int i = 0; i < 5; ++i) {
            ObservablesTimeSeries2DSample sample;
            sample.time = static_cast<double>(i) * 0.5;
            sample.meanX = static_cast<double>(i);
            history.append(sample);
        }
 
        if (history.size() != 3u) {
            error = "bounded history did not trim to maximum size";
            return false;
        }
        if (std::fabs(history.samples().front().time - 1.0) > 1.0e-12 ||
            std::fabs(history.samples().back().time - 2.0) > 1.0e-12) {
            error = "bounded history kept the wrong sample range";
            return false;
        }
 
        history.setMaximumSamples(2u);
        if (history.size() != 2u ||
            std::fabs(history.samples().front().meanX - 3.0) > 1.0e-12) {
            error = "setMaximumSamples did not preserve newest samples";
            return false;
        }
 
        history.clear();
        if (!history.empty()) {
            error = "clear did not empty the history";
            return false;
        }
 
        return true;
    } catch (const std::exception &e) {
        error = e.what();
        return false;
    }
}
 
} // namespace tests
} // namespace qpe