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// -*- C++ -*-
/**
* @brief The test file of class ChiSquare for standard methods
*
* Copyright 2005-2025 Airbus-EDF-IMACS-ONERA-Phimeca
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "openturns/OT.hxx"
#include "openturns/OTtestcode.hxx"
using namespace OT;
using namespace OT::Test;
int main(int, char *[])
{
TESTPREAMBLE;
OStream fullprint(std::cout);
try
{
ChiSquare distribution(0.5);
UnsignedInteger size = 10000;
Sample sample(distribution.getSample(size));
ChiSquareFactory factory;
Distribution estimatedDistribution(factory.build(sample));
fullprint << "Distribution =" << distribution << std::endl;
fullprint << "Estimated distribution=" << estimatedDistribution << std::endl;
distribution = ChiSquare(1.0);
sample = distribution.getSample(size);
estimatedDistribution = factory.build(sample);
fullprint << "Distribution =" << distribution << std::endl;
fullprint << "Estimated distribution=" << estimatedDistribution << std::endl;
distribution = ChiSquare(2.5);
sample = distribution.getSample(size);
estimatedDistribution = factory.build(sample);
fullprint << "Distribution =" << distribution << std::endl;
fullprint << "Estimated distribution=" << estimatedDistribution << std::endl;
estimatedDistribution = factory.build();
fullprint << "Default distribution=" << estimatedDistribution << std::endl;
estimatedDistribution = factory.build(distribution.getParameter());
fullprint << "Distribution from parameters=" << estimatedDistribution << std::endl;
ChiSquare estimatedChiSquare(factory.buildAsChiSquare(sample));
fullprint << "ChiSquare =" << distribution << std::endl;
fullprint << "Estimated chiSquare=" << estimatedChiSquare << std::endl;
estimatedChiSquare = factory.buildAsChiSquare();
fullprint << "Default chiSquare=" << estimatedChiSquare << std::endl;
estimatedChiSquare = factory.buildAsChiSquare(distribution.getParameter());
fullprint << "ChiSquare from parameters=" << estimatedChiSquare << std::endl;
}
catch (TestFailed & ex)
{
std::cerr << ex << std::endl;
return ExitCode::Error;
}
return ExitCode::Success;
}
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