1 /*
2 [auto_generated]
3 libs/numeric/odeint/test/times_iterator.cpp
4
5 [begin_description]
6 This file tests the n-step iterator.
7 [end_description]
8
9 Copyright 2009-2013 Karsten Ahnert
10 Copyright 2009-2013 Mario Mulansky
11
12 Distributed under the Boost Software License, Version 1.0.
13 (See accompanying file LICENSE_1_0.txt or
14 copy at http://www.boost.org/LICENSE_1_0.txt)
15 */
16
17
18 #define BOOST_TEST_MODULE odeint_times_iterator
19
20 #include <iterator>
21 #include <algorithm>
22 #include <vector>
23 #include <iostream>
24
25 #include <boost/numeric/odeint/config.hpp>
26 #include <boost/array.hpp>
27 #include <boost/range/algorithm/for_each.hpp>
28 #include <boost/range/algorithm/copy.hpp>
29 #include <boost/mpl/vector.hpp>
30
31 #include <boost/test/unit_test.hpp>
32 #include <boost/test/floating_point_comparison.hpp>
33
34 #include <boost/numeric/odeint/iterator/times_iterator.hpp>
35 #include "dummy_steppers.hpp"
36 #include "dummy_odes.hpp"
37 #include "dummy_observers.hpp"
38
39 namespace mpl = boost::mpl;
40 using namespace boost::numeric::odeint;
41
42 typedef dummy_stepper::state_type state_type;
43 typedef dummy_stepper::value_type value_type;
44
45
46 BOOST_AUTO_TEST_SUITE( times_iterator_test )
47
48 typedef mpl::vector<
49 dummy_stepper
50 , dummy_dense_output_stepper
51 > dummy_steppers;
52
53 boost::array<double,4> times = {{ 0.0 , 0.1, 0.2, 0.3 }};
54 typedef boost::array<double,4>::iterator time_iterator_type;
55
BOOST_AUTO_TEST_CASE_TEMPLATE(copy_stepper_iterator,Stepper,dummy_steppers)56 BOOST_AUTO_TEST_CASE_TEMPLATE( copy_stepper_iterator , Stepper , dummy_steppers )
57 {
58 typedef times_iterator< Stepper , empty_system , state_type , time_iterator_type > iterator_type;
59 state_type x = {{ 1.0 }};
60 iterator_type iter1 = iterator_type( Stepper() , empty_system() , x , times.begin() , times.end() , 0.1 );
61 iterator_type iter2 = iter1;
62 BOOST_CHECK_EQUAL( &(*iter1) , &(*iter2) );
63 BOOST_CHECK_EQUAL( &(*iter1) , &x );
64 BOOST_CHECK( iter1.same( iter2 ) );
65 }
66
67
BOOST_AUTO_TEST_CASE_TEMPLATE(assignment_stepper_iterator,Stepper,dummy_steppers)68 BOOST_AUTO_TEST_CASE_TEMPLATE( assignment_stepper_iterator , Stepper , dummy_steppers )
69 {
70 std::cout << "assignment" << std::endl;
71 typedef times_iterator< Stepper , empty_system , state_type , time_iterator_type> iterator_type;
72 state_type x1 = {{ 1.0 }} , x2 = {{ 2.0 }};
73 iterator_type iter1 = iterator_type( Stepper() , empty_system() , x1 , times.begin() , times.end() , 0.1 );
74 iterator_type iter2 = iterator_type( Stepper() , empty_system() , x2 , times.begin() , times.end() , 0.2 );
75 BOOST_CHECK_EQUAL( &(*iter1) , &x1 );
76 BOOST_CHECK_EQUAL( &(*iter2) , &x2 );
77 BOOST_CHECK( !iter1.same( iter2 ) );
78 iter2 = iter1;
79 BOOST_CHECK_EQUAL( &(*iter1) , &x1 );
80 BOOST_CHECK_EQUAL( &(*iter2) , &x1 );
81 BOOST_CHECK( iter1.same( iter2 ) );
82 }
83
84
85
BOOST_AUTO_TEST_CASE_TEMPLATE(stepper_iterator_factory,Stepper,dummy_steppers)86 BOOST_AUTO_TEST_CASE_TEMPLATE( stepper_iterator_factory , Stepper , dummy_steppers )
87 {
88 std::cout << "factory" << std::endl;
89 Stepper stepper;
90 empty_system system;
91 state_type x = {{ 1.0 }};
92
93 std::for_each(
94 make_times_iterator_begin( stepper , boost::ref( system ) , x , times.begin(), times.end() , 0.1 ) ,
95 make_times_iterator_end<time_iterator_type>( stepper , boost::ref( system ) , x ) ,
96 dummy_observer() );
97
98 // dummy_steppers just add 0.25 at each step, the above for_each leads to 3 do_step calls so x should be 1.75
99 BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-13 );
100 }
101
BOOST_AUTO_TEST_CASE_TEMPLATE(stepper_range,Stepper,dummy_steppers)102 BOOST_AUTO_TEST_CASE_TEMPLATE( stepper_range , Stepper , dummy_steppers )
103 {
104 std::cout << "range" << std::endl;
105 Stepper stepper;
106 empty_system system;
107 state_type x = {{ 1.0 }};
108
109 boost::for_each( make_times_range( stepper , boost::ref( system ) , x , times.begin() , times.end() , 0.1 ) ,
110 dummy_observer() );
111
112 BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-13 );
113 }
114
BOOST_AUTO_TEST_CASE_TEMPLATE(stepper_iterator_with_reference_wrapper_factory,Stepper,dummy_steppers)115 BOOST_AUTO_TEST_CASE_TEMPLATE( stepper_iterator_with_reference_wrapper_factory , Stepper , dummy_steppers )
116 {
117 Stepper stepper;
118 empty_system system;
119 state_type x = {{ 1.0 }};
120
121 std::for_each(
122 make_times_iterator_begin( boost::ref( stepper ) , boost::ref( system ) , x , times.begin() , times.end() , 0.1 ) ,
123 make_times_iterator_end<time_iterator_type>( boost::ref( stepper ) , boost::ref( system ) , x ) ,
124 dummy_observer() );
125
126 BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-13 );
127 }
128
BOOST_AUTO_TEST_CASE_TEMPLATE(stepper_range_with_reference_wrapper,Stepper,dummy_steppers)129 BOOST_AUTO_TEST_CASE_TEMPLATE( stepper_range_with_reference_wrapper , Stepper , dummy_steppers )
130 {
131 Stepper stepper;
132 empty_system system;
133 state_type x = {{ 1.0 }};
134
135 boost::for_each( make_times_range( boost::ref( stepper ) , boost::ref( system ) , x , times.begin() , times.end(), 0.1 ) ,
136 dummy_observer() );
137
138 BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-13 );
139 }
140
141
142
BOOST_AUTO_TEST_CASE_TEMPLATE(transitivity1,Stepper,dummy_steppers)143 BOOST_AUTO_TEST_CASE_TEMPLATE( transitivity1 , Stepper , dummy_steppers )
144 {
145 typedef times_iterator< Stepper , empty_system , state_type , time_iterator_type > stepper_iterator;
146 std::cout << "transitivity1" << std::endl;
147 state_type x = {{ 1.0 }};
148 stepper_iterator first1( Stepper() , empty_system() , x , times.end() , times.end() , 0.1 );
149 stepper_iterator last1( Stepper() , empty_system() , x );
150 stepper_iterator last2( Stepper() , empty_system() , x );
151
152 BOOST_CHECK( first1 == last1 );
153 BOOST_CHECK( first1 == last2 );
154 BOOST_CHECK( last1 == last2 );
155
156 first1 = stepper_iterator( Stepper() , empty_system() , x , times.end()-1 , times.end() , 0.1 );
157 last1 = stepper_iterator( Stepper() , empty_system() , x );
158 BOOST_CHECK( first1 != last1 );
159 BOOST_CHECK( ++first1 == last1 );
160 }
161
162
BOOST_AUTO_TEST_CASE_TEMPLATE(copy_algorithm,Stepper,dummy_steppers)163 BOOST_AUTO_TEST_CASE_TEMPLATE( copy_algorithm , Stepper , dummy_steppers )
164 {
165 typedef times_iterator< Stepper , empty_system , state_type , time_iterator_type> stepper_iterator;
166 state_type x = {{ 1.0 }};
167 std::vector< state_type > res;
168 stepper_iterator first( Stepper() , empty_system() , x , times.begin() , times.end() , 0.1 );
169 stepper_iterator last( Stepper() , empty_system() , x );
170
171 std::copy( first , last , std::back_insert_iterator< std::vector< state_type > >( res ) );
172
173 BOOST_CHECK_EQUAL( res.size() , size_t( 4 ) );
174 BOOST_CHECK_CLOSE( res[0][0] , 1.0 , 1.0e-13 );
175 BOOST_CHECK_CLOSE( res[1][0] , 1.25 , 1.0e-13 );
176 BOOST_CHECK_CLOSE( res[2][0] , 1.5 , 1.0e-13 );
177 BOOST_CHECK_CLOSE( res[3][0] , 1.75 , 1.0e-13 );
178
179 BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-13 ); // the iterator should not iterate over the end
180 }
181
BOOST_AUTO_TEST_CASE_TEMPLATE(copy_algorithm_negative_time_step,Stepper,dummy_steppers)182 BOOST_AUTO_TEST_CASE_TEMPLATE( copy_algorithm_negative_time_step , Stepper , dummy_steppers )
183 {
184 typedef times_iterator< Stepper , empty_system , state_type , time_iterator_type > stepper_iterator;
185 state_type x = {{ 1.0 }};
186 std::vector< state_type > res;
187 boost::array<double,4> neg_times = {{ 0.0 , -0.1, -0.2, -0.3 }};
188 stepper_iterator first( Stepper() , empty_system() , x , neg_times.begin() , neg_times.end() , -0.1 );
189 stepper_iterator last( Stepper() , empty_system() , x );
190
191 std::copy( first , last , std::back_insert_iterator< std::vector< state_type > >( res ) );
192
193 BOOST_CHECK_EQUAL( res.size() , size_t( 4 ) );
194 BOOST_CHECK_CLOSE( res[0][0] , 1.0 , 1.0e-13 );
195 BOOST_CHECK_CLOSE( res[1][0] , 1.25 , 1.0e-13 );
196 BOOST_CHECK_CLOSE( res[2][0] , 1.5 , 1.0e-13 );
197 BOOST_CHECK_CLOSE( res[3][0] , 1.75 , 1.0e-13 );
198
199 BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-13 );
200 }
201
202
BOOST_AUTO_TEST_CASE_TEMPLATE(copy_algorithm_with_factory,Stepper,dummy_steppers)203 BOOST_AUTO_TEST_CASE_TEMPLATE( copy_algorithm_with_factory , Stepper , dummy_steppers )
204 {
205 state_type x = {{ 1.0 }};
206 std::vector< state_type > res;
207 std::copy( make_times_iterator_begin( Stepper() , empty_system() , x , times.begin() , times.end() , 0.1 ) ,
208 make_times_iterator_end<time_iterator_type>( Stepper() , empty_system() , x ) ,
209 std::back_insert_iterator< std::vector< state_type > >( res ) );
210
211 BOOST_CHECK_EQUAL( res.size() , size_t( 4 ) );
212 BOOST_CHECK_CLOSE( res[0][0] , 1.0 , 1.0e-13 );
213 BOOST_CHECK_CLOSE( res[1][0] , 1.25 , 1.0e-13 );
214 BOOST_CHECK_CLOSE( res[2][0] , 1.5 , 1.0e-13 );
215 BOOST_CHECK_CLOSE( res[3][0] , 1.75 , 1.0e-13 );
216
217 BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-13 );
218 }
219
BOOST_AUTO_TEST_CASE_TEMPLATE(copy_algorithm_with_range_factory,Stepper,dummy_steppers)220 BOOST_AUTO_TEST_CASE_TEMPLATE( copy_algorithm_with_range_factory , Stepper , dummy_steppers )
221 {
222 state_type x = {{ 1.0 }};
223 std::vector< state_type > res;
224 boost::range::copy( make_times_range( Stepper() , empty_system() , x , times.begin() , times.end() , 0.1 ) ,
225 std::back_insert_iterator< std::vector< state_type > >( res ) );
226
227 BOOST_CHECK_EQUAL( res.size() , size_t( 4 ) );
228 BOOST_CHECK_CLOSE( res[0][0] , 1.0 , 1.0e-13 );
229 BOOST_CHECK_CLOSE( res[1][0] , 1.25 , 1.0e-13 );
230 BOOST_CHECK_CLOSE( res[2][0] , 1.5 , 1.0e-13 );
231 BOOST_CHECK_CLOSE( res[3][0] , 1.75 , 1.0e-13 );
232
233 BOOST_CHECK_CLOSE( x[0] , 1.75 , 1.0e-13 );
234 }
235
236
237 BOOST_AUTO_TEST_SUITE_END()
238