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#include "gtest/gtest.h"
#include "storm-config.h"
#include "src/solver/NativeNondeterministicLinearEquationSolver.h"
#include "src/settings/Settings.h"
TEST(NativeNondeterministicLinearEquationSolver, SolveWithStandardOptions) {
storm::storage::SparseMatrixBuilder<double> builder(0, 0, 0, true);
ASSERT_NO_THROW(builder.newRowGroup(0));
ASSERT_NO_THROW(builder.addNextValue(0, 0, 0.9));
storm::storage::SparseMatrix<double> A;
ASSERT_NO_THROW(A = builder.build(2));
std::vector<double> x(1);
std::vector<double> b = {0.099, 0.5};
storm::solver::NativeNondeterministicLinearEquationSolver<double> solver;
ASSERT_NO_THROW(solver.solveEquationSystem(true, A, x, b));
ASSERT_LT(std::abs(x[0] - 0.5), storm::settings::Settings::getInstance()->getOptionByLongName("precision").getArgument(0).getValueAsDouble());
ASSERT_NO_THROW(solver.solveEquationSystem(false, A, x, b));
ASSERT_LT(std::abs(x[0] - 0.989991), storm::settings::Settings::getInstance()->getOptionByLongName("precision").getArgument(0).getValueAsDouble());
}
TEST(NativeNondeterministicLinearEquationSolver, MatrixVectorMultiplication) {
storm::storage::SparseMatrixBuilder<double> builder(0, 0, 0, true);
ASSERT_NO_THROW(builder.newRowGroup(0));
ASSERT_NO_THROW(builder.addNextValue(0, 0, 0.9));
ASSERT_NO_THROW(builder.addNextValue(0, 1, 0.099));
ASSERT_NO_THROW(builder.addNextValue(0, 2, 0.001));
ASSERT_NO_THROW(builder.addNextValue(1, 1, 0.5));
ASSERT_NO_THROW(builder.addNextValue(1, 2, 0.5));
ASSERT_NO_THROW(builder.newRowGroup(2));
ASSERT_NO_THROW(builder.addNextValue(2, 1, 1));
ASSERT_NO_THROW(builder.newRowGroup(3));
ASSERT_NO_THROW(builder.addNextValue(3, 2, 1));
storm::storage::SparseMatrix<double> A;
ASSERT_NO_THROW(A = builder.build());
std::vector<double> x = {0, 1, 0};
ASSERT_NO_THROW(storm::solver::NativeNondeterministicLinearEquationSolver<double> solver);
storm::solver::NativeNondeterministicLinearEquationSolver<double> solver;
ASSERT_NO_THROW(solver.performMatrixVectorMultiplication(true, A, x, nullptr, 1));
ASSERT_LT(std::abs(x[0] - 0.099), storm::settings::Settings::getInstance()->getOptionByLongName("precision").getArgument(0).getValueAsDouble());
x = {0, 1, 0};
ASSERT_NO_THROW(solver.performMatrixVectorMultiplication(true, A, x, nullptr, 2));
ASSERT_LT(std::abs(x[0] - 0.1881), storm::settings::Settings::getInstance()->getOptionByLongName("precision").getArgument(0).getValueAsDouble());
x = {0, 1, 0};
ASSERT_NO_THROW(solver.performMatrixVectorMultiplication(true, A, x, nullptr, 20));
ASSERT_LT(std::abs(x[0] - 0.5), storm::settings::Settings::getInstance()->getOptionByLongName("precision").getArgument(0).getValueAsDouble());
x = {0, 1, 0};
ASSERT_NO_THROW(solver.performMatrixVectorMultiplication(false, A, x, nullptr, 1));
ASSERT_LT(std::abs(x[0] - 0.5), storm::settings::Settings::getInstance()->getOptionByLongName("precision").getArgument(0).getValueAsDouble());
x = {0, 1, 0};
ASSERT_NO_THROW(solver.performMatrixVectorMultiplication(false, A, x, nullptr, 20));
ASSERT_LT(std::abs(x[0] - 0.9238082658), storm::settings::Settings::getInstance()->getOptionByLongName("precision").getArgument(0).getValueAsDouble());
}