143 lines
3.7 KiB
C++
143 lines
3.7 KiB
C++
// (C) Copyright Eric Niebler 2005.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/test/unit_test.hpp>
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#include <boost/test/tools/floating_point_comparison.hpp>
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#include <boost/accumulators/accumulators.hpp>
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#include <boost/accumulators/statistics/stats.hpp>
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#include <boost/accumulators/statistics/mean.hpp>
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using namespace boost;
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using namespace unit_test;
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using namespace accumulators;
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template<typename T>
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void assert_is_double(T const &)
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{
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BOOST_MPL_ASSERT((is_same<T, double>));
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}
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///////////////////////////////////////////////////////////////////////////////
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// test_stat
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//
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void test_stat()
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{
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accumulator_set<int, stats<droppable<tag::mean> > > acc, test_acc(sample = 0);
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acc(1);
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BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
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BOOST_CHECK_EQUAL(1u, count(acc));
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BOOST_CHECK_EQUAL(1, sum(acc));
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acc(0);
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BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
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BOOST_CHECK_EQUAL(2u, count(acc));
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BOOST_CHECK_EQUAL(1, sum(acc));
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acc.drop<tag::mean>();
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acc(2);
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BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
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BOOST_CHECK_EQUAL(2u, count(acc));
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BOOST_CHECK_EQUAL(1, sum(acc));
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assert_is_double(mean(acc));
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accumulator_set<int, stats<droppable<tag::mean(immediate)> > > acc2, test_acc2(sample = 0);
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acc2(1);
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BOOST_CHECK_CLOSE(1., mean(acc2), 1e-5);
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BOOST_CHECK_EQUAL(1u, count(acc2));
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acc2(0);
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BOOST_CHECK_CLOSE(0.5, mean(acc2), 1e-5);
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BOOST_CHECK_EQUAL(2u, count(acc2));
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acc2.drop<tag::mean>();
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acc2(2);
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BOOST_CHECK_CLOSE(0.5, mean(acc2), 1e-5);
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BOOST_CHECK_EQUAL(2u, count(acc2));
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assert_is_double(mean(acc2));
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}
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///////////////////////////////////////////////////////////////////////////////
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// test_stat2
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//
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void test_stat2()
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{
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accumulator_set<int, stats<droppable<tag::sum>, droppable<tag::mean> > > acc, test_acc(sample = 0);
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acc(1);
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BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
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BOOST_CHECK_EQUAL(1u, count(acc));
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BOOST_CHECK_EQUAL(1, sum(acc));
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acc(0);
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BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
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BOOST_CHECK_EQUAL(2u, count(acc));
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BOOST_CHECK_EQUAL(1, sum(acc));
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acc.drop<tag::mean>();
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acc.drop<tag::sum>();
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acc(2);
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BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
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BOOST_CHECK_EQUAL(2u, count(acc));
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BOOST_CHECK_EQUAL(1, sum(acc));
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assert_is_double(mean(acc));
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}
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///////////////////////////////////////////////////////////////////////////////
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// test_stat3
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//
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void test_stat3()
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{
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accumulator_set<int, stats<droppable<tag::sum>, droppable<tag::count>, droppable<tag::mean> > > acc, test_acc(sample = 0);
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acc(1);
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BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
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BOOST_CHECK_EQUAL(1u, count(acc));
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BOOST_CHECK_EQUAL(1, sum(acc));
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acc(0);
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BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
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BOOST_CHECK_EQUAL(2u, count(acc));
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BOOST_CHECK_EQUAL(1, sum(acc));
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acc.drop<tag::mean>();
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acc.drop<tag::sum>();
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acc(2);
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BOOST_CHECK_CLOSE(1./3., mean(acc), 1e-5);
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BOOST_CHECK_EQUAL(3u, count(acc));
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BOOST_CHECK_EQUAL(1, sum(acc));
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acc.drop<tag::count>();
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acc(3);
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BOOST_CHECK_CLOSE(1./3., mean(acc), 1e-5);
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BOOST_CHECK_EQUAL(3u, count(acc));
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BOOST_CHECK_EQUAL(1, sum(acc));
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assert_is_double(mean(acc));
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}
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///////////////////////////////////////////////////////////////////////////////
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// init_unit_test_suite
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//
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test_suite* init_unit_test_suite( int argc, char* argv[] )
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{
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test_suite *test = BOOST_TEST_SUITE("droppable test");
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test->add(BOOST_TEST_CASE(&test_stat));
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test->add(BOOST_TEST_CASE(&test_stat2));
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test->add(BOOST_TEST_CASE(&test_stat3));
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return test;
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}
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