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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;
namespace my
{
BOOST_PARAMETER_KEYWORD(tag, sum_acc)
}
///////////////////////////////////////////////////////////////////////////////
// test_stat
//
void test_stat()
{
accumulator_set<int, stats<tag::mean, tag::external<tag::sum, my::tag::sum_acc> > > acc;
accumulator_set<int, stats<tag::sum> > sum_acc;
acc(1);
sum_acc(1);
BOOST_CHECK_CLOSE(1., mean(acc, my::sum_acc = sum_acc), 1e-5);
BOOST_CHECK_EQUAL(1u, count(acc));
BOOST_CHECK_EQUAL(1, sum(sum_acc));
acc(0);
sum_acc(0);
BOOST_CHECK_CLOSE(0.5, mean(acc, my::sum_acc = sum_acc), 1e-5);
BOOST_CHECK_EQUAL(2u, count(acc));
BOOST_CHECK_EQUAL(1, sum(acc, my::sum_acc = sum_acc));
acc(2);
sum_acc(2);
BOOST_CHECK_CLOSE(1., mean(acc, my::sum_acc = sum_acc), 1e-5);
BOOST_CHECK_EQUAL(3u, count(acc));
BOOST_CHECK_EQUAL(3, sum(acc, my::sum_acc = sum_acc));
}
///////////////////////////////////////////////////////////////////////////////
// test_reference
//
void test_reference()
{
typedef accumulator_set<int, stats<tag::sum> > sum_acc_type;
sum_acc_type sum_acc;
accumulator_set<
int
, stats<
tag::mean
, tag::external<tag::sum, my::tag::sum_acc>
, tag::reference<sum_acc_type, my::tag::sum_acc>
>
> acc(my::sum_acc = sum_acc);
acc(1);
sum_acc(1);
BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
BOOST_CHECK_EQUAL(1u, count(acc));
BOOST_CHECK_EQUAL(1, sum(sum_acc));
acc(0);
sum_acc(0);
BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
BOOST_CHECK_EQUAL(2u, count(acc));
BOOST_CHECK_EQUAL(1, sum(acc));
acc(2);
sum_acc(2);
BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
BOOST_CHECK_EQUAL(3u, count(acc));
BOOST_CHECK_EQUAL(3, sum(acc));
}
///////////////////////////////////////////////////////////////////////////////
// test_reference2
//
void test_reference2()
{
typedef accumulator_set<int, stats<tag::sum> > sum_acc_type;
sum_acc_type sum_acc;
accumulator_set<
int
, stats<
tag::mean
, tag::external<tag::sum, my::tag::sum_acc, sum_acc_type>
>
> acc(my::sum_acc = sum_acc);
acc(1);
sum_acc(1);
BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
BOOST_CHECK_EQUAL(1u, count(acc));
BOOST_CHECK_EQUAL(1, sum(sum_acc));
acc(0);
sum_acc(0);
BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
BOOST_CHECK_EQUAL(2u, count(acc));
BOOST_CHECK_EQUAL(1, sum(acc));
acc(2);
sum_acc(2);
BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
BOOST_CHECK_EQUAL(3u, count(acc));
BOOST_CHECK_EQUAL(3, sum(acc));
}
///////////////////////////////////////////////////////////////////////////////
// init_unit_test_suite
//
test_suite* init_unit_test_suite( int argc, char* argv[] )
{
test_suite *test = BOOST_TEST_SUITE("external_accumulator test");
test->add(BOOST_TEST_CASE(&test_stat));
test->add(BOOST_TEST_CASE(&test_reference));
test->add(BOOST_TEST_CASE(&test_reference2));
return test;
}
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