| // (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/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; |
| |
| namespace my |
| { |
| BOOST_PARAMETER_KEYWORD(tag, int_ref) |
| BOOST_PARAMETER_KEYWORD(tag, sum_acc) |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // test_stat |
| // |
| void test_stat() |
| { |
| int i = 0; |
| accumulator_set<double, stats<tag::reference<int, my::tag::int_ref> > > acc( |
| my::int_ref = i); |
| |
| int &ref1 = accumulators::reference<int, my::tag::int_ref>(acc); |
| int &ref2 = accumulators::reference_tag<my::tag::int_ref>(acc); |
| |
| BOOST_CHECK_EQUAL(&i, &ref1); |
| BOOST_CHECK_EQUAL(&i, &ref2); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // test_external |
| // |
| void test_external() |
| { |
| typedef accumulator_set<int, stats<tag::sum> > sum_acc_type; |
| sum_acc_type sum_acc; // the sum accumulator |
| accumulator_set< |
| int |
| , stats< |
| tag::mean |
| , tag::external<tag::sum, my::tag::sum_acc> // make sum external |
| , tag::reference<sum_acc_type, my::tag::sum_acc> // and hold a reference to it |
| > |
| > acc_with_ref(my::sum_acc = sum_acc); // initialize the reference sum |
| |
| sum_acc(1); |
| sum_acc(2); // sum is now 3 for both |
| |
| BOOST_CHECK_EQUAL(sum(acc_with_ref), sum(sum_acc)); |
| BOOST_CHECK_EQUAL(sum(acc_with_ref), 3); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // test_external2 |
| // |
| void test_external2() |
| { |
| typedef accumulator_set<int, stats<tag::sum> > sum_acc_type; |
| sum_acc_type sum_acc; // the sum accumulator |
| accumulator_set< |
| int |
| , stats< |
| tag::mean |
| // make sum external and hold a reference to it |
| , tag::external<tag::sum, my::tag::sum_acc, sum_acc_type> |
| > |
| > acc_with_ref(my::sum_acc = sum_acc); // initialize the reference sum |
| |
| sum_acc(1); |
| sum_acc(2); // sum is now 3 for both |
| |
| BOOST_CHECK_EQUAL(sum(acc_with_ref), sum(sum_acc)); |
| BOOST_CHECK_EQUAL(sum(acc_with_ref), 3); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // init_unit_test_suite |
| // |
| test_suite* init_unit_test_suite( int argc, char* argv[] ) |
| { |
| test_suite *test = BOOST_TEST_SUITE("reference_accumulator test"); |
| |
| test->add(BOOST_TEST_CASE(&test_stat)); |
| test->add(BOOST_TEST_CASE(&test_external)); |
| test->add(BOOST_TEST_CASE(&test_external2)); |
| |
| return test; |
| } |