| // Copyright (C) Eric Niebler 2008. |
| // Copyright (C) Pieter Bastiaan Ober 2014. |
| // Use, modification and distribution are subject to 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) |
| |
| #include <boost/test/unit_test.hpp> |
| #include <boost/test/floating_point_comparison.hpp> |
| #include <boost/mpl/assert.hpp> |
| #include <boost/type_traits/is_same.hpp> |
| #include <boost/accumulators/accumulators.hpp> |
| #include <boost/accumulators/statistics/stats.hpp> |
| #include <boost/accumulators/statistics/rolling_mean.hpp> |
| |
| using namespace boost; |
| using namespace unit_test; |
| using namespace accumulators; |
| |
| template<typename T> |
| void assert_is_double(T const &) |
| { |
| BOOST_MPL_ASSERT((is_same<T, double>)); |
| } |
| |
| // test_rolling_mean_test_impl |
| // implements a test for window_size = 5 |
| size_t window_size = 5; |
| |
| template<typename accumulator_set_type> |
| void |
| test_rolling_mean_test_impl(accumulator_set_type& acc) |
| { |
| acc(1); |
| BOOST_CHECK_CLOSE(1., rolling_mean(acc), 1e-5); |
| |
| acc(2); |
| BOOST_CHECK_CLOSE(1.5, rolling_mean(acc), 1e-5); |
| |
| acc(3); |
| BOOST_CHECK_CLOSE(2., rolling_mean(acc), 1e-5); |
| |
| acc(4); |
| BOOST_CHECK_CLOSE(2.5, rolling_mean(acc), 1e-5); |
| |
| acc(5); |
| BOOST_CHECK_CLOSE(3., rolling_mean(acc), 1e-5); |
| |
| acc(6); |
| BOOST_CHECK_CLOSE(4., rolling_mean(acc), 1e-5); |
| |
| acc(7); |
| BOOST_CHECK_CLOSE(5., rolling_mean(acc), 1e-5); |
| |
| assert_is_double(rolling_mean(acc)); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // test_rolling_mean |
| void test_rolling_mean() |
| { |
| accumulator_set<int,stats<tag::immediate_rolling_mean> > |
| acc_immediate_rolling_mean(tag::immediate_rolling_mean::window_size = window_size), |
| acc_immediate_rolling_mean2(tag::immediate_rolling_mean::window_size = window_size, sample = 0); |
| |
| accumulator_set<int,stats<tag::rolling_mean(immediate)> > |
| acc_immediate_rolling_mean3(tag::immediate_rolling_mean::window_size = window_size); |
| |
| accumulator_set<int,stats<tag::lazy_rolling_mean> > |
| acc_lazy_rolling_mean(tag::lazy_rolling_mean::window_size = window_size), |
| acc_lazy_rolling_mean2(tag::lazy_rolling_mean::window_size = window_size, sample = 0); |
| |
| accumulator_set<int,stats<tag::rolling_mean(lazy)> > |
| acc_lazy_rolling_mean3(tag::lazy_rolling_mean::window_size = window_size); |
| |
| accumulator_set<int,stats<tag::rolling_mean> > |
| acc_default_rolling_mean(tag::rolling_mean::window_size = window_size), |
| acc_default_rolling_mean2(tag::rolling_mean::window_size = window_size, sample = 0); |
| |
| //// test the different implementations |
| test_rolling_mean_test_impl(acc_lazy_rolling_mean); |
| test_rolling_mean_test_impl(acc_default_rolling_mean); |
| test_rolling_mean_test_impl(acc_immediate_rolling_mean); |
| |
| test_rolling_mean_test_impl(acc_lazy_rolling_mean2); |
| test_rolling_mean_test_impl(acc_default_rolling_mean2); |
| test_rolling_mean_test_impl(acc_immediate_rolling_mean2); |
| |
| test_rolling_mean_test_impl(acc_lazy_rolling_mean3); |
| test_rolling_mean_test_impl(acc_immediate_rolling_mean3); |
| |
| //// test that the default implementation is the 'immediate' computation |
| BOOST_REQUIRE(sizeof(acc_lazy_rolling_mean) != sizeof(acc_immediate_rolling_mean)); |
| BOOST_CHECK (sizeof(acc_default_rolling_mean) == sizeof(acc_immediate_rolling_mean)); |
| |
| //// test the equivalence of the different ways to indicate a feature |
| BOOST_CHECK (sizeof(acc_lazy_rolling_mean) == sizeof(acc_lazy_rolling_mean2)); |
| BOOST_CHECK (sizeof(acc_lazy_rolling_mean) == sizeof(acc_lazy_rolling_mean3)); |
| BOOST_CHECK (sizeof(acc_immediate_rolling_mean) == sizeof(acc_immediate_rolling_mean2)); |
| BOOST_CHECK (sizeof(acc_immediate_rolling_mean) == sizeof(acc_immediate_rolling_mean3)); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // init_unit_test_suite |
| // |
| test_suite* init_unit_test_suite( int argc, char* argv[] ) |
| { |
| test_suite *test = BOOST_TEST_SUITE("rolling mean test"); |
| |
| test->add(BOOST_TEST_CASE(&test_rolling_mean)); |
| |
| return test; |
| } |