ceph/src/boost/libs/accumulators/test/rolling_sum.cpp

   1 //  (C) Copyright Eric Niebler 2008.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #include <boost/test/unit_test.hpp>
   7 #include <boost/accumulators/accumulators.hpp>
   8 #include <boost/accumulators/statistics/stats.hpp>
   9 #include <boost/accumulators/statistics/rolling_sum.hpp>
  10 #include <sstream>
  11 #include <boost/archive/text_oarchive.hpp>
  12 #include <boost/archive/text_iarchive.hpp>
  13
  14 using namespace boost;
  15 using namespace unit_test;
  16 using namespace accumulators;
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 // test_stat
  20 //
  21 void test_stat()
  22 {
  23     accumulator_set<int, stats<tag::rolling_sum> > acc(tag::rolling_window::window_size = 3);
  24
  25     BOOST_CHECK_EQUAL(0, rolling_sum(acc));
  26
  27     acc(1);
  28     BOOST_CHECK_EQUAL(1, rolling_sum(acc));
  29
  30     acc(2);
  31     BOOST_CHECK_EQUAL(3, rolling_sum(acc));
  32
  33     acc(3);
  34     BOOST_CHECK_EQUAL(6, rolling_sum(acc));
  35
  36     acc(4);
  37     BOOST_CHECK_EQUAL(9, rolling_sum(acc));
  38
  39     acc(5);
  40     BOOST_CHECK_EQUAL(12, rolling_sum(acc));
  41 }
  42
  43 ///////////////////////////////////////////////////////////////////////////////
  44 // test_persistency
  45 //
  46 void test_persistency()
  47 {
  48     std::stringstream ss;
  49     {
  50         accumulator_set<int, stats<tag::rolling_sum> > acc(tag::rolling_window::window_size = 3);
  51         acc(1);
  52         acc(2);
  53         acc(3);
  54         acc(4);
  55         acc(5);
  56         BOOST_CHECK_EQUAL(12, rolling_sum(acc));
  57         boost::archive::text_oarchive oa(ss);
  58         acc.serialize(oa, 0);
  59     }
  60     accumulator_set<int, stats<tag::rolling_sum> > acc(tag::rolling_window::window_size = 3);
  61     boost::archive::text_iarchive ia(ss);
  62     acc.serialize(ia, 0);
  63     BOOST_CHECK_EQUAL(12, rolling_sum(acc));
  64 }
  65
  66 ///////////////////////////////////////////////////////////////////////////////
  67 // init_unit_test_suite
  68 //
  69 test_suite* init_unit_test_suite( int argc, char* argv[] )
  70 {
  71     test_suite *test = BOOST_TEST_SUITE("rolling sum test");
  72
  73     test->add(BOOST_TEST_CASE(&test_stat));
  74     test->add(BOOST_TEST_CASE(&test_persistency));
  75
  76     return test;
  77 }