1 files changed, 123 insertions, 0 deletions
diff --git a/src/boost/libs/accumulators/test/mean.cpp b/src/boost/libs/accumulators/test/mean.cpp
new file mode 100644
index 00000000..29d48776
--- /dev/null
+++ b/src/boost/libs/accumulators/test/mean.cpp
@@ -0,0 +1,123 @@
+//  (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/weighted_mean.hpp>
+#include <boost/accumulators/statistics/variates/covariate.hpp>
+#include <sstream>
+#include <boost/archive/text_oarchive.hpp>
+#include <boost/archive/text_iarchive.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>));
+}
+
+typedef accumulator_set<int, stats<tag::mean, 
+        tag::mean_of_variates<int, tag::covariate1> > > mean_t;
+
+typedef accumulator_set<int, stats<tag::mean(immediate), 
+        tag::mean_of_variates<int, tag::covariate1>(immediate) > > immediate_mean_t;
+
+///////////////////////////////////////////////////////////////////////////////
+// test_stat
+//
+void test_stat()
+{
+    mean_t acc, test_acc(sample = 0);
+
+    acc(1, covariate1 = 3);
+    BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
+    BOOST_CHECK_EQUAL(1u, count(acc));
+    BOOST_CHECK_EQUAL(1, sum(acc));
+    BOOST_CHECK_CLOSE(3., (accumulators::mean_of_variates<int, tag::covariate1>(acc)), 1e-5);
+
+    acc(0, covariate1 = 4);
+    BOOST_CHECK_CLOSE(0.5, mean(acc), 1e-5);
+    BOOST_CHECK_EQUAL(2u, count(acc));
+    BOOST_CHECK_EQUAL(1, sum(acc));
+    BOOST_CHECK_CLOSE(3.5, (accumulators::mean_of_variates<int, tag::covariate1>(acc)), 1e-5);
+
+    acc(2, covariate1 = 8);
+    BOOST_CHECK_CLOSE(1., mean(acc), 1e-5);
+    BOOST_CHECK_EQUAL(3u, count(acc));
+    BOOST_CHECK_EQUAL(3, sum(acc));
+    BOOST_CHECK_CLOSE(5., (accumulators::mean_of_variates<int, tag::covariate1>(acc)), 1e-5);
+
+    assert_is_double(mean(acc));
+
+    immediate_mean_t acc2, test_acc2(sample = 0);
+
+    acc2(1, covariate1 = 3);
+    BOOST_CHECK_CLOSE(1., mean(acc2), 1e-5);
+    BOOST_CHECK_EQUAL(1u, count(acc2));
+    BOOST_CHECK_CLOSE(3., (accumulators::mean_of_variates<int, tag::covariate1>(acc2)), 1e-5);
+
+    acc2(0, covariate1 = 4);
+    BOOST_CHECK_CLOSE(0.5, mean(acc2), 1e-5);
+    BOOST_CHECK_EQUAL(2u, count(acc2));
+    BOOST_CHECK_CLOSE(3.5, (accumulators::mean_of_variates<int, tag::covariate1>(acc2)), 1e-5);
+
+    acc2(2, covariate1 = 8);
+    BOOST_CHECK_CLOSE(1., mean(acc2), 1e-5);
+    BOOST_CHECK_EQUAL(3u, count(acc2));
+    BOOST_CHECK_CLOSE(5., (accumulators::mean_of_variates<int, tag::covariate1>(acc2)), 1e-5);
+
+    assert_is_double(mean(acc2));
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// test_persistency
+//
+void test_persistency()
+{
+    std::stringstream ss;
+    {
+        mean_t acc1;
+        immediate_mean_t acc2;
+
+        acc1(1, covariate1 = 3);
+        acc1(0, covariate1 = 4);
+        acc1(2, covariate1 = 8);
+        acc2(1, covariate1 = 3);
+        acc2(0, covariate1 = 4);
+        acc2(2, covariate1 = 8);
+        BOOST_CHECK_CLOSE(1., mean(acc1), 1e-5);
+        BOOST_CHECK_CLOSE(5., (accumulators::mean_of_variates<int, tag::covariate1>(acc1)), 1e-5);
+        BOOST_CHECK_CLOSE(1., mean(acc2), 1e-5);
+        BOOST_CHECK_CLOSE(5., (accumulators::mean_of_variates<int, tag::covariate1>(acc2)), 1e-5);
+        boost::archive::text_oarchive oa(ss);
+        acc1.serialize(oa, 0);
+        acc2.serialize(oa, 0);
+    }
+    mean_t acc1;
+    immediate_mean_t acc2;
+    boost::archive::text_iarchive ia(ss);
+    acc1.serialize(ia, 0);
+    acc2.serialize(ia, 0);
+    BOOST_CHECK_CLOSE(1., mean(acc1), 1e-5);
+    BOOST_CHECK_CLOSE(5., (accumulators::mean_of_variates<int, tag::covariate1>(acc2)), 1e-5);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// init_unit_test_suite
+//
+test_suite* init_unit_test_suite( int argc, char* argv[] )
+{
+    test_suite *test = BOOST_TEST_SUITE("mean test");
+
+    test->add(BOOST_TEST_CASE(&test_stat));
+    test->add(BOOST_TEST_CASE(&test_persistency));
+
+    return test;
+}