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rAKA/test/test_gtest_utils.hh
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test_gtest_utils.hh
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/**
* @file test_gtest_utils.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Tue Nov 14 2017
* @date last modification: Wed Feb 21 2018
*
* @brief Utils to help write tests
*
* @section LICENSE
*
* Copyright (©) 2016-2018 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu 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.
*
* Akantu 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 Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "aka_iterators.hh"
/* -------------------------------------------------------------------------- */
#include <boost/preprocessor.hpp>
#include <gtest/gtest.h>
#include <tuple>
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_TEST_GTEST_UTILS_HH__
#define __AKANTU_TEST_GTEST_UTILS_HH__
namespace {
/* -------------------------------------------------------------------------- */
template <::akantu::ElementType t>
using element_type_t = std::integral_constant<::akantu::ElementType, t>;
/* -------------------------------------------------------------------------- */
template <typename... T> struct gtest_list {};
template <typename... Ts> struct gtest_list<std::tuple<Ts...>> {
using type = ::testing::Types<Ts...>;
};
template <typename... T> using gtest_list_t = typename gtest_list<T...>::type;
/* -------------------------------------------------------------------------- */
template <typename... T> struct tuple_concat {};
template <typename... T1s, typename... T2s>
struct tuple_concat<std::tuple<T1s...>, std::tuple<T2s...>> {
using type = std::tuple<T1s..., T2s...>;
};
template <typename... T>
using tuple_concat_t = typename tuple_concat<T...>::type;
/* -------------------------------------------------------------------------- */
template <template <typename> class Pred, typename... Ts>
struct tuple_filter {};
template <template <typename> class Pred, typename T>
struct tuple_filter<Pred, std::tuple<T>> {
using type = std::conditional_t<Pred<T>::value, std::tuple<T>, std::tuple<>>;
};
template <template <typename> class Pred, typename T, typename... Ts>
struct tuple_filter<Pred, std::tuple<T, Ts...>> {
using type =
tuple_concat_t<typename tuple_filter<Pred, std::tuple<T>>::type,
typename tuple_filter<Pred, std::tuple<Ts...>>::type>;
};
template <template <typename> class Pred, typename... Ts>
using tuple_filter_t = typename tuple_filter<Pred, Ts...>::type;
/* -------------------------------------------------------------------------- */
template <size_t N, typename... Ts> struct tuple_split {};
template <size_t N, typename T, typename... Ts>
struct tuple_split<N, std::tuple<T, Ts...>> {
protected:
using split = tuple_split<N - 1, std::tuple<Ts...>>;
public:
using type = tuple_concat_t<std::tuple<T>, typename split::type>;
using type_tail = typename split::type_tail;
};
template <typename T, typename... Ts>
struct tuple_split<1, std::tuple<T, Ts...>> {
using type = std::tuple<T>;
using type_tail = std::tuple<Ts...>;
};
template <size_t N, typename... T>
using tuple_split_t = typename tuple_split<N, T...>::type;
template <size_t N, typename... T>
using tuple_split_tail_t = typename tuple_split<N, T...>::type_tail;
/* -------------------------------------------------------------------------- */
template <typename... T> struct cross_product {};
template <typename... T2s>
struct cross_product<std::tuple<>, std::tuple<T2s...>> {
using type = std::tuple<>;
};
template <typename T1, typename... T1s, typename... T2s>
struct cross_product<std::tuple<T1, T1s...>, std::tuple<T2s...>> {
using type = tuple_concat_t<
std::tuple<std::tuple<T1, T2s>...>,
typename cross_product<std::tuple<T1s...>, std::tuple<T2s...>>::type>;
};
template <typename... T>
using cross_product_t = typename cross_product<T...>::type;
/* -------------------------------------------------------------------------- */
#define OP_CAT(s, data, elem) element_type_t<::akantu::elem>
using TestElementTypesAll = std::tuple<BOOST_PP_SEQ_ENUM(
BOOST_PP_SEQ_TRANSFORM(OP_CAT, _, AKANTU_ek_regular_ELEMENT_TYPE))>;
#if defined(AKANTU_COHESIVE_ELEMENT)
using TestCohesiveElementTypes = std::tuple<BOOST_PP_SEQ_ENUM(
BOOST_PP_SEQ_TRANSFORM(OP_CAT, _, AKANTU_ek_cohesive_ELEMENT_TYPE))>;
#endif
#if defined(AKANTU_STRUCTURAL_MECHANICS)
using TestElementTypesStructural = std::tuple<BOOST_PP_SEQ_ENUM(
BOOST_PP_SEQ_TRANSFORM(OP_CAT, _, AKANTU_ek_structural_ELEMENT_TYPE))>;
#endif
} // namespace
using TestAllDimensions = std::tuple<std::integral_constant<unsigned int, 1>,
std::integral_constant<unsigned int, 2>,
std::integral_constant<unsigned int, 3>>;
template <typename T, ::akantu::ElementType type>
using is_element = std::is_same<T, element_type_t<type>>;
template <typename T>
using not_is_point_1 = aka::negation<is_element<T, ::akantu::_point_1>>;
using TestElementTypes = tuple_filter_t<not_is_point_1, TestElementTypesAll>;
#if defined(AKANTU_STRUCTURAL_MECHANICS)
using StructuralTestElementTypes =
tuple_filter_t<not_is_point_1, TestElementTypesStructural>;
#endif
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
template <size_t degree> class Polynomial {
public:
Polynomial() = default;
Polynomial(std::initializer_list<double> && init) {
for (auto && pair : akantu::zip(init, constants))
std::get<1>(pair) = std::get<0>(pair);
}
double operator()(double x) {
double res = 0.;
for (auto && vals : akantu::enumerate(constants)) {
double a;
int k;
std::tie(k, a) = vals;
res += a * std::pow(x, k);
}
return res;
}
Polynomial extract(size_t pdegree) {
Polynomial<degree> extract(*this);
for (size_t d = pdegree + 1; d < degree + 1; ++d)
extract.constants[d] = 0;
return extract;
}
auto integral() {
Polynomial<degree + 1> integral_;
integral_.set(0, 0.);
;
for (size_t d = 0; d < degree + 1; ++d) {
integral_.set(1 + d, get(d) / double(d + 1));
}
return integral_;
}
auto integrate(double a, double b) {
auto primitive = integral();
return (primitive(b) - primitive(a));
}
double get(int i) const { return constants[i]; }
void set(int i, double a) { constants[i] = a; }
protected:
std::array<double, degree + 1> constants;
};
template <size_t degree>
std::ostream & operator<<(std::ostream & stream, const Polynomial<degree> & p) {
for (size_t d = 0; d < degree + 1; ++d) {
if (d != 0)
stream << " + ";
stream << p.get(degree - d);
if (d != degree)
stream << "x ^ " << degree - d;
}
return stream;
}
/* -------------------------------------------------------------------------- */
#endif /* __AKANTU_TEST_GTEST_UTILS_HH__ */
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