| /* |
| [auto_generated] |
| libs/numeric/odeint/test/const_step_iterator.cpp |
| |
| [begin_description] |
| This file tests the const step iterator. |
| [end_description] |
| |
| Copyright 2012-2013 Karsten Ahnert |
| Copyright 2013 Mario Mulansky |
| |
| Distributed under the Boost Software License, Version 1.0. |
| (See accompanying file LICENSE_1_0.txt or |
| copy at http://www.boost.org/LICENSE_1_0.txt) |
| */ |
| |
| |
| #define BOOST_TEST_MODULE odeint_const_step_iterator |
| |
| #include <iterator> |
| #include <algorithm> |
| #include <vector> |
| |
| #include <boost/numeric/odeint/config.hpp> |
| #include <boost/array.hpp> |
| #include <boost/range/algorithm/for_each.hpp> |
| #include <boost/range/algorithm/copy.hpp> |
| #include <boost/mpl/vector.hpp> |
| |
| #include <boost/test/unit_test.hpp> |
| #include <boost/test/floating_point_comparison.hpp> |
| |
| #include <boost/numeric/odeint/iterator/const_step_iterator.hpp> |
| #include "dummy_steppers.hpp" |
| #include "dummy_odes.hpp" |
| #include "dummy_observers.hpp" |
| |
| namespace mpl = boost::mpl; |
| using namespace boost::numeric::odeint; |
| |
| typedef dummy_stepper::state_type state_type; |
| typedef dummy_stepper::value_type value_type; |
| |
| |
| BOOST_AUTO_TEST_SUITE( const_step_iterator_test ) |
| |
| typedef mpl::vector< |
| dummy_stepper |
| , dummy_dense_output_stepper |
| > dummy_steppers; |
| |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( copy_stepper_iterator , Stepper , dummy_steppers ) |
| { |
| typedef const_step_iterator< Stepper , empty_system , state_type > iterator_type; |
| state_type x = {{ 1.0 }}; |
| iterator_type iter1 = iterator_type( Stepper() , empty_system() , x , 0.0 , 0.999 , 0.1 ); |
| iterator_type iter2 = iter1; |
| BOOST_CHECK_EQUAL( &(*iter1) , &(*iter2) ); |
| BOOST_CHECK_EQUAL( &(*iter1) , &x ); |
| BOOST_CHECK( iter1.same( iter2 ) ); |
| } |
| |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( assignment_stepper_iterator , Stepper , dummy_steppers ) |
| { |
| typedef const_step_iterator< Stepper , empty_system , state_type > iterator_type; |
| state_type x1 = {{ 1.0 }} , x2 = {{ 2.0 }}; |
| iterator_type iter1 = iterator_type( Stepper() , empty_system() , x1 , 0.0 , 1.0 , 0.1 ); |
| iterator_type iter2 = iterator_type( Stepper() , empty_system() , x2 , 0.0 , 1.0 , 0.2 ); |
| BOOST_CHECK_EQUAL( &(*iter1) , &x1 ); |
| BOOST_CHECK_EQUAL( &(*iter2) , &x2 ); |
| BOOST_CHECK( !iter1.same( iter2 ) ); |
| iter2 = iter1; |
| BOOST_CHECK_EQUAL( &(*iter1) , &x1 ); |
| BOOST_CHECK_EQUAL( &(*iter2) , &x1 ); |
| BOOST_CHECK( iter1.same( iter2 ) ); |
| } |
| |
| |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( stepper_iterator_factory , Stepper , dummy_steppers ) |
| { |
| Stepper stepper; |
| empty_system system; |
| state_type x = {{ 1.0 }}; |
| |
| std::for_each( |
| make_const_step_iterator_begin( stepper , boost::ref( system ) , x , 0.0 , 1.0 , 0.1 ) , |
| make_const_step_iterator_end( stepper , boost::ref( system ) , x ) , |
| dummy_observer() ); |
| |
| // dummy_steppers just add 0.25 at each step, the above for_each leads to 10 do_step calls so x should be 3.5 |
| BOOST_CHECK_CLOSE( x[0] , 3.5 , 1.0e-13 ); |
| } |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( stepper_range , Stepper , dummy_steppers ) |
| { |
| Stepper stepper; |
| empty_system system; |
| state_type x = {{ 1.0 }}; |
| |
| boost::for_each( make_const_step_range( stepper , boost::ref( system ) , x , 0.0 , 1.0 , 0.1 ) , |
| dummy_observer() ); |
| |
| BOOST_CHECK_CLOSE( x[0] , 3.5 , 1.0e-13 ); |
| } |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( stepper_iterator_with_reference_wrapper_factory , Stepper , dummy_steppers ) |
| { |
| Stepper stepper; |
| empty_system system; |
| state_type x = {{ 1.0 }}; |
| |
| std::for_each( |
| make_const_step_iterator_begin( boost::ref( stepper ) , boost::ref( system ) , x , 0.0 , 1.0 , 0.1 ) , |
| make_const_step_iterator_end( boost::ref( stepper ) , boost::ref( system ) , x ) , |
| dummy_observer() ); |
| |
| BOOST_CHECK_CLOSE( x[0] , 3.5 , 1.0e-13 ); |
| } |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( stepper_range_with_reference_wrapper , Stepper , dummy_steppers ) |
| { |
| Stepper stepper; |
| empty_system system; |
| state_type x = {{ 1.0 }}; |
| |
| boost::for_each( make_const_step_range( boost::ref( stepper ) , boost::ref( system ) , x , 0.0 , 1.0 , 0.1 ) , |
| dummy_observer() ); |
| |
| BOOST_CHECK_CLOSE( x[0] , 3.5 , 1.0e-13 ); |
| } |
| |
| |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( transitivity1 , Stepper , dummy_steppers ) |
| { |
| typedef const_step_iterator< Stepper , empty_system , state_type > stepper_iterator; |
| |
| state_type x = {{ 1.0 }}; |
| stepper_iterator first1( Stepper() , empty_system() , x , 2.5 , 2.0 , 0.1 ); |
| stepper_iterator last1( Stepper() , empty_system() , x ); |
| stepper_iterator last2( Stepper() , empty_system() , x ); |
| |
| BOOST_CHECK( first1 == last1 ); |
| BOOST_CHECK( first1 == last2 ); |
| BOOST_CHECK( last1 == last2 ); |
| |
| first1 = stepper_iterator( Stepper() , empty_system() , x , 2.0 , 2.0 , 0.1 ); |
| last1 = stepper_iterator( Stepper() , empty_system() , x ); |
| BOOST_CHECK( first1 != last1 ); |
| BOOST_CHECK( ++first1 == last1 ); |
| } |
| |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( copy_algorithm , Stepper , dummy_steppers ) |
| { |
| typedef const_step_iterator< Stepper , empty_system , state_type > stepper_iterator; |
| state_type x = {{ 1.0 }}; |
| std::vector< state_type > res; |
| stepper_iterator first( Stepper() , empty_system() , x , 0.0 , 0.35 , 0.1 ); |
| stepper_iterator last( Stepper() , empty_system() , x ); |
| |
| std::copy( first , last , std::back_insert_iterator< std::vector< state_type > >( res ) ); |
| |
| BOOST_CHECK_EQUAL( res.size() , size_t( 4 ) ); |
| BOOST_CHECK_CLOSE( res[0][0] , 1.0 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[1][0] , 1.25 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[2][0] , 1.5 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[3][0] , 1.75 , 1.0e-14 ); |
| |
| BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-14 ); // the iterator should not iterate over the end |
| } |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( copy_algorithm_negative_time_step , Stepper , dummy_steppers ) |
| { |
| typedef const_step_iterator< Stepper , empty_system , state_type > stepper_iterator; |
| state_type x = {{ 1.0 }}; |
| std::vector< state_type > res; |
| stepper_iterator first( Stepper() , empty_system() , x , 0.3 , -0.05 , -0.1 ); |
| stepper_iterator last( Stepper() , empty_system() , x ); |
| |
| std::copy( first , last , std::back_insert_iterator< std::vector< state_type > >( res ) ); |
| |
| BOOST_CHECK_EQUAL( res.size() , size_t( 4 ) ); |
| BOOST_CHECK_CLOSE( res[0][0] , 1.0 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[1][0] , 1.25 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[2][0] , 1.5 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[3][0] , 1.75 , 1.0e-14 ); |
| |
| BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-14 ); |
| } |
| |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( copy_algorithm_with_factory , Stepper , dummy_steppers ) |
| { |
| state_type x = {{ 1.0 }}; |
| std::vector< state_type > res; |
| std::copy( make_const_step_iterator_begin( Stepper() , empty_system() , x , 0.0 , 0.35 , 0.1 ) , |
| make_const_step_iterator_end( Stepper() , empty_system() , x ) , |
| std::back_insert_iterator< std::vector< state_type > >( res ) ); |
| |
| BOOST_CHECK_EQUAL( res.size() , size_t( 4 ) ); |
| BOOST_CHECK_CLOSE( res[0][0] , 1.0 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[1][0] , 1.25 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[2][0] , 1.5 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[3][0] , 1.75 , 1.0e-14 ); |
| |
| BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-14 ); |
| } |
| |
| BOOST_AUTO_TEST_CASE_TEMPLATE( copy_algorithm_with_range_factory , Stepper , dummy_steppers ) |
| { |
| state_type x = {{ 1.0 }}; |
| std::vector< state_type > res; |
| boost::range::copy( make_const_step_range( Stepper() , empty_system() , x , 0.0 , 0.35 , 0.1 ) , |
| std::back_insert_iterator< std::vector< state_type > >( res ) ); |
| |
| BOOST_CHECK_EQUAL( res.size() , size_t( 4 ) ); |
| BOOST_CHECK_CLOSE( res[0][0] , 1.0 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[1][0] , 1.25 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[2][0] , 1.5 , 1.0e-14 ); |
| BOOST_CHECK_CLOSE( res[3][0] , 1.75 , 1.0e-14 ); |
| |
| BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-14 ); |
| } |
| |
| |
| |
| |
| BOOST_AUTO_TEST_SUITE_END() |