1 | // (C) Copyright Eric Niebler 2005. |
2 | // Use, modification and distribution are subject to the |
3 | // Boost Software License, Version 1.0. (See accompanying file |
4 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
5 | |
6 | #include <boost/test/unit_test.hpp> |
7 | #include <boost/test/tools/floating_point_comparison.hpp> |
8 | #include <boost/accumulators/accumulators.hpp> |
9 | #include <boost/accumulators/statistics/stats.hpp> |
10 | #include <boost/accumulators/statistics/mean.hpp> |
11 | |
12 | using namespace boost; |
13 | using namespace unit_test; |
14 | using namespace accumulators; |
15 | |
16 | template<typename T> |
17 | void assert_is_double(T const &) |
18 | { |
19 | BOOST_MPL_ASSERT((is_same<T, double>)); |
20 | } |
21 | |
22 | /////////////////////////////////////////////////////////////////////////////// |
23 | // test_stat |
24 | // |
25 | void test_stat() |
26 | { |
27 | accumulator_set<int, stats<droppable<tag::mean> > > acc, test_acc(sample = 0); |
28 | |
29 | acc(1); |
30 | BOOST_CHECK_CLOSE(1., mean(acc), 1e-5); |
31 | BOOST_CHECK_EQUAL(1u, count(acc)); |
32 | BOOST_CHECK_EQUAL(1, sum(acc)); |
33 | |
34 | acc(0); |
35 | BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5); |
36 | BOOST_CHECK_EQUAL(2u, count(acc)); |
37 | BOOST_CHECK_EQUAL(1, sum(acc)); |
38 | |
39 | acc.drop<tag::mean>(); |
40 | |
41 | acc(2); |
42 | BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5); |
43 | BOOST_CHECK_EQUAL(2u, count(acc)); |
44 | BOOST_CHECK_EQUAL(1, sum(acc)); |
45 | |
46 | assert_is_double(mean(acc)); |
47 | |
48 | |
49 | accumulator_set<int, stats<droppable<tag::mean(immediate)> > > acc2, test_acc2(sample = 0); |
50 | |
51 | acc2(1); |
52 | BOOST_CHECK_CLOSE(1., mean(acc2), 1e-5); |
53 | BOOST_CHECK_EQUAL(1u, count(acc2)); |
54 | |
55 | acc2(0); |
56 | BOOST_CHECK_CLOSE(0.5, mean(acc2), 1e-5); |
57 | BOOST_CHECK_EQUAL(2u, count(acc2)); |
58 | |
59 | acc2.drop<tag::mean>(); |
60 | |
61 | acc2(2); |
62 | BOOST_CHECK_CLOSE(0.5, mean(acc2), 1e-5); |
63 | BOOST_CHECK_EQUAL(2u, count(acc2)); |
64 | |
65 | assert_is_double(mean(acc2)); |
66 | } |
67 | |
68 | /////////////////////////////////////////////////////////////////////////////// |
69 | // test_stat2 |
70 | // |
71 | void test_stat2() |
72 | { |
73 | accumulator_set<int, stats<droppable<tag::sum>, droppable<tag::mean> > > acc, test_acc(sample = 0); |
74 | |
75 | acc(1); |
76 | BOOST_CHECK_CLOSE(1., mean(acc), 1e-5); |
77 | BOOST_CHECK_EQUAL(1u, count(acc)); |
78 | BOOST_CHECK_EQUAL(1, sum(acc)); |
79 | |
80 | acc(0); |
81 | BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5); |
82 | BOOST_CHECK_EQUAL(2u, count(acc)); |
83 | BOOST_CHECK_EQUAL(1, sum(acc)); |
84 | |
85 | acc.drop<tag::mean>(); |
86 | acc.drop<tag::sum>(); |
87 | |
88 | acc(2); |
89 | BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5); |
90 | BOOST_CHECK_EQUAL(2u, count(acc)); |
91 | BOOST_CHECK_EQUAL(1, sum(acc)); |
92 | |
93 | assert_is_double(mean(acc)); |
94 | } |
95 | |
96 | /////////////////////////////////////////////////////////////////////////////// |
97 | // test_stat3 |
98 | // |
99 | void test_stat3() |
100 | { |
101 | accumulator_set<int, stats<droppable<tag::sum>, droppable<tag::count>, droppable<tag::mean> > > acc, test_acc(sample = 0); |
102 | |
103 | acc(1); |
104 | BOOST_CHECK_CLOSE(1., mean(acc), 1e-5); |
105 | BOOST_CHECK_EQUAL(1u, count(acc)); |
106 | BOOST_CHECK_EQUAL(1, sum(acc)); |
107 | |
108 | acc(0); |
109 | BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5); |
110 | BOOST_CHECK_EQUAL(2u, count(acc)); |
111 | BOOST_CHECK_EQUAL(1, sum(acc)); |
112 | |
113 | acc.drop<tag::mean>(); |
114 | acc.drop<tag::sum>(); |
115 | |
116 | acc(2); |
117 | BOOST_CHECK_CLOSE(1./3., mean(acc), 1e-5); |
118 | BOOST_CHECK_EQUAL(3u, count(acc)); |
119 | BOOST_CHECK_EQUAL(1, sum(acc)); |
120 | |
121 | acc.drop<tag::count>(); |
122 | acc(3); |
123 | BOOST_CHECK_CLOSE(1./3., mean(acc), 1e-5); |
124 | BOOST_CHECK_EQUAL(3u, count(acc)); |
125 | BOOST_CHECK_EQUAL(1, sum(acc)); |
126 | |
127 | assert_is_double(mean(acc)); |
128 | } |
129 | |
130 | /////////////////////////////////////////////////////////////////////////////// |
131 | // init_unit_test_suite |
132 | // |
133 | test_suite* init_unit_test_suite( int argc, char* argv[] ) |
134 | { |
135 | test_suite *test = BOOST_TEST_SUITE("droppable test" ); |
136 | |
137 | test->add(BOOST_TEST_CASE(&test_stat)); |
138 | test->add(BOOST_TEST_CASE(&test_stat2)); |
139 | test->add(BOOST_TEST_CASE(&test_stat3)); |
140 | |
141 | return test; |
142 | } |
143 | |