add_lam_pixels

test_materials_toolbox.cc
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			/**
			* file test_materials_toolbox.cc
			*
			* @author Till Junge <till.junge@altermail.ch>
			*
			* @date 05 Nov 2017
			*
			* @brief Tests for the materials toolbox
			*
			* @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 <unsupported/Eigen/CXX11/Tensor>
			#include <unsupported/Eigen/CXX11/TensorSymmetry>

			#include "tests.hh"
			#include "materials/materials_toolbox.hh"


			namespace muSpectre {

			BOOST_AUTO_TEST_SUITE(materials_toolbox)

			BOOST_AUTO_TEST_CASE(test_linearisation) {
			constexpr Dim_t dim{2};
			using Stress_t = Eigen::TensorFixedSize<Real, Eigen::Sizes<dim, dim, dim, dim>>;
			using Strain_t = Eigen::TensorFixedSize<Real, Eigen::Sizes<dim, dim>>;
			Strain_t F;
			F.setRandom();
			auto E = .5(F.shuffle(std::array<Dim_t, dim>{1,0})F-Tensors::I2<dim>());
			}

			BOOST_AUTO_TEST_SUITE_END();

			} // muSpectre