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

   1 //  (C) Copyright Eric Niebler 2005.
   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_count.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_count> > acc(tag::rolling_window::window_size = 3);
  24
  25     BOOST_CHECK_EQUAL(0u, rolling_count(acc));
  26
  27     acc(1);
  28     BOOST_CHECK_EQUAL(1u, rolling_count(acc));
  29
  30     acc(1);
  31     BOOST_CHECK_EQUAL(2u, rolling_count(acc));
  32
  33     acc(1);
  34     BOOST_CHECK_EQUAL(3u, rolling_count(acc));
  35
  36     acc(1);
  37     BOOST_CHECK_EQUAL(3u, rolling_count(acc));
  38
  39     acc(1);
  40     BOOST_CHECK_EQUAL(3u, rolling_count(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_count> > acc(tag::rolling_window::window_size = 3);
  51         acc(1);
  52         acc(1);
  53         acc(1);
  54         acc(1);
  55         acc(1);
  56         acc(1);
  57         BOOST_CHECK_EQUAL(3u, rolling_count(acc));
  58         boost::archive::text_oarchive oa(ss);
  59         acc.serialize(oa, 0);
  60     }
  61     accumulator_set<int, stats<tag::rolling_count> > acc(tag::rolling_window::window_size = 3);
  62     boost::archive::text_iarchive ia(ss);
  63     acc.serialize(ia, 0);
  64     BOOST_CHECK_EQUAL(3u, rolling_count(acc));
  65 }
  66
  67 ///////////////////////////////////////////////////////////////////////////////
  68 // init_unit_test_suite
  69 //
  70 test_suite* init_unit_test_suite( int argc, char* argv[] )
  71 {
  72     test_suite *test = BOOST_TEST_SUITE("rolling count test");
  73
  74     test->add(BOOST_TEST_CASE(&test_stat));
  75     test->add(BOOST_TEST_CASE(&test_persistency));
  76
  77     return test;
  78 }