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
  11 using namespace boost;
  12 using namespace unit_test;
  13 using namespace accumulators;
  14
  15 ///////////////////////////////////////////////////////////////////////////////
  16 // test_stat
  17 //
  18 void test_stat()
  19 {
  20     accumulator_set<int, stats<tag::rolling_sum> > acc(tag::rolling_window::window_size = 3);
  21
  22     BOOST_CHECK_EQUAL(0, rolling_sum(acc));
  23
  24     acc(1);
  25     BOOST_CHECK_EQUAL(1, rolling_sum(acc));
  26
  27     acc(2);
  28     BOOST_CHECK_EQUAL(3, rolling_sum(acc));
  29
  30     acc(3);
  31     BOOST_CHECK_EQUAL(6, rolling_sum(acc));
  32
  33     acc(4);
  34     BOOST_CHECK_EQUAL(9, rolling_sum(acc));
  35
  36     acc(5);
  37     BOOST_CHECK_EQUAL(12, rolling_sum(acc));
  38 }
  39
  40 ///////////////////////////////////////////////////////////////////////////////
  41 // init_unit_test_suite
  42 //
  43 test_suite* init_unit_test_suite( int argc, char* argv[] )
  44 {
  45     test_suite *test = BOOST_TEST_SUITE("rolling sum test");
  46
  47     test->add(BOOST_TEST_CASE(&test_stat));
  48
  49     return test;
  50 }