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muSpectre/tests/test_t4_map.cc
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test_t4_map.cc
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/**
* file test_t4_map.cc
*
* @author Till Junge <till.junge@epfl.ch>
*
* @date 20 Nov 2017
*
* @brief Test the fourth-order map on second-order tensor implementation
*
* @section LICENCE
*
* Copyright (C) 2017 Till Junge
*
* µSpectre is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3, or (at
* your option) any later version.
*
* µSpectre 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Emacs; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <iostream>
#include <Eigen/Dense>
#include <unsupported/Eigen/CXX11/Tensor>
#include <boost/mpl/list.hpp>
#include "common/common.hh"
#include "tests.hh"
#include "common/T4_map_proxy.hh"
namespace muSpectre {
BOOST_AUTO_TEST_SUITE(T4map_tests);
/**
* Test fixture for construction of T4Map for the time being, symmetry is not
* exploited
*/
template<typename T, Dim_t Dim>
struct T4_fixture
{
T4_fixture():matrix{}, tensor(matrix.data()){}
EIGEN_MAKE_ALIGNED_OPERATOR_NEW;
using M4 = Eigen::Matrix<T, Dim*Dim, Dim*Dim>;
using T4 = T4Map<T, Dim>;
constexpr static Dim_t dim{Dim};
M4 matrix;
T4 tensor;
};
using fix_collection = boost::mpl::list<T4_fixture<Real, twoD>,
T4_fixture<Real, threeD>>;
BOOST_FIXTURE_TEST_CASE_TEMPLATE(Simple_construction_test, F, fix_collection, F) {
BOOST_CHECK_EQUAL(F::tensor.cols(), F::dim*F::dim);
}
BOOST_FIXTURE_TEST_CASE_TEMPLATE(write_access_test, F, fix_collection, F) {
auto & t4 = F::tensor;
constexpr Dim_t dim{F::dim};
Eigen::TensorFixedSize<Real, Eigen::Sizes<dim, dim, dim, dim>> t4c;
Eigen::Map<typename F::M4> t4c_map(t4c.data());
for (Dim_t i = 0; i < F::dim; ++i) {
for (Dim_t j = 0; j < F::dim; ++j) {
for (Dim_t k = 0; k < F::dim; ++k) {
for (Dim_t l = 0; l < F::dim; ++l) {
t4(i,j,k,l) = 1000*(i+1) + 100*(j+1) + 10*(k+1) + l+1;
t4c(i,j,k,l) = 1000*(i+1) + 100*(j+1) + 10*(k+1) + l+1;
}
}
}
}
for (Dim_t i = 0; i < ipow(dim,4); ++i) {
BOOST_CHECK_EQUAL(F::matrix.data()[i], t4c.data()[i]);
}
}
BOOST_FIXTURE_TEST_CASE_TEMPLATE(assign_matrix_test, F, fix_collection, F) {
decltype(F::matrix) matrix;
matrix.setRandom();
F::tensor = matrix;
for (Dim_t i = 0; i < ipow(F::dim,4); ++i) {
BOOST_CHECK_EQUAL(F::matrix.data()[i], matrix.data()[i]);
}
}
BOOST_AUTO_TEST_CASE(Return_ref_from_const_test) {
constexpr Dim_t dim{2};
using T = int;
using M4 = Eigen::Matrix<T, dim*dim, dim*dim>;
using M4c = const Eigen::Matrix<T, dim*dim, dim*dim>;
using T4 = T4Map<T, dim>;
using T4c = T4Map<T, dim, true>;
M4 mat;
mat.setRandom();
M4c cmat{mat};
T4 tensor{mat.data()};
T4c ctensor{mat.data()};
T a = tensor(0,0,0,1);
T b = ctensor(0,0,0,1);
BOOST_CHECK_EQUAL(a, b);
}
BOOST_AUTO_TEST_SUITE_END();
} // muSpectre
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