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- // (C) Copyright Eric Niebler 2005.
- // 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/accumulators/accumulators.hpp>
- #include <boost/accumulators/statistics/stats.hpp>
- #include <boost/accumulators/statistics/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_stat
- //
- void test_stat()
- {
- accumulator_set<int, stats<droppable<tag::mean> > > acc, test_acc(sample = 0);
- acc(1);
- BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
- BOOST_CHECK_EQUAL(1u, count(acc));
- BOOST_CHECK_EQUAL(1, sum(acc));
- acc(0);
- BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
- BOOST_CHECK_EQUAL(2u, count(acc));
- BOOST_CHECK_EQUAL(1, sum(acc));
- acc.drop<tag::mean>();
- acc(2);
- BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
- BOOST_CHECK_EQUAL(2u, count(acc));
- BOOST_CHECK_EQUAL(1, sum(acc));
- assert_is_double(mean(acc));
- accumulator_set<int, stats<droppable<tag::mean(immediate)> > > acc2, test_acc2(sample = 0);
- acc2(1);
- BOOST_CHECK_CLOSE(1., mean(acc2), 1e-5);
- BOOST_CHECK_EQUAL(1u, count(acc2));
- acc2(0);
- BOOST_CHECK_CLOSE(0.5, mean(acc2), 1e-5);
- BOOST_CHECK_EQUAL(2u, count(acc2));
- acc2.drop<tag::mean>();
- acc2(2);
- BOOST_CHECK_CLOSE(0.5, mean(acc2), 1e-5);
- BOOST_CHECK_EQUAL(2u, count(acc2));
- assert_is_double(mean(acc2));
- }
- ///////////////////////////////////////////////////////////////////////////////
- // test_stat2
- //
- void test_stat2()
- {
- accumulator_set<int, stats<droppable<tag::sum>, droppable<tag::mean> > > acc, test_acc(sample = 0);
- acc(1);
- BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
- BOOST_CHECK_EQUAL(1u, count(acc));
- BOOST_CHECK_EQUAL(1, sum(acc));
- acc(0);
- BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
- BOOST_CHECK_EQUAL(2u, count(acc));
- BOOST_CHECK_EQUAL(1, sum(acc));
- acc.drop<tag::mean>();
- acc.drop<tag::sum>();
- acc(2);
- BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
- BOOST_CHECK_EQUAL(2u, count(acc));
- BOOST_CHECK_EQUAL(1, sum(acc));
- assert_is_double(mean(acc));
- }
- ///////////////////////////////////////////////////////////////////////////////
- // test_stat3
- //
- void test_stat3()
- {
- accumulator_set<int, stats<droppable<tag::sum>, droppable<tag::count>, droppable<tag::mean> > > acc, test_acc(sample = 0);
- acc(1);
- BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
- BOOST_CHECK_EQUAL(1u, count(acc));
- BOOST_CHECK_EQUAL(1, sum(acc));
- acc(0);
- BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
- BOOST_CHECK_EQUAL(2u, count(acc));
- BOOST_CHECK_EQUAL(1, sum(acc));
- acc.drop<tag::mean>();
- acc.drop<tag::sum>();
- acc(2);
- BOOST_CHECK_CLOSE(1./3., mean(acc), 1e-5);
- BOOST_CHECK_EQUAL(3u, count(acc));
- BOOST_CHECK_EQUAL(1, sum(acc));
- acc.drop<tag::count>();
- acc(3);
- BOOST_CHECK_CLOSE(1./3., mean(acc), 1e-5);
- BOOST_CHECK_EQUAL(3u, count(acc));
- BOOST_CHECK_EQUAL(1, sum(acc));
- assert_is_double(mean(acc));
- }
- ///////////////////////////////////////////////////////////////////////////////
- // init_unit_test_suite
- //
- test_suite* init_unit_test_suite( int argc, char* argv[] )
- {
- test_suite *test = BOOST_TEST_SUITE("droppable test");
- test->add(BOOST_TEST_CASE(&test_stat));
- test->add(BOOST_TEST_CASE(&test_stat2));
- test->add(BOOST_TEST_CASE(&test_stat3));
- return test;
- }
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