ceph/src/boost/libs/accumulators/test/tail.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/foreach.hpp>
   7 #include <boost/test/unit_test.hpp>
   8 #include <boost/accumulators/accumulators.hpp>
   9 #include <boost/accumulators/statistics/stats.hpp>
  10 #include <boost/accumulators/statistics/tail.hpp>
  11 #include <boost/accumulators/statistics/tail_variate.hpp>
  12 #include <boost/accumulators/statistics/variates/covariate.hpp>
  13
  14 using namespace boost;
  15 using namespace unit_test;
  16 using namespace accumulators;
  17
  18 template<typename Range>
  19 void check_tail(Range const &rng, char const *expected)
  20 {
  21     BOOST_FOREACH(int i, rng)
  22     {
  23         if(!*expected)
  24         {
  25             BOOST_CHECK(false);
  26             return;
  27         }
  28         BOOST_CHECK_EQUAL(i, *expected++);
  29     }
  30     BOOST_CHECK(!*expected);
  31 }
  32
  33 ///////////////////////////////////////////////////////////////////////////////
  34 // test_right_tail
  35 //
  36 void test_right_tail()
  37 {
  38     accumulator_set<int, stats<tag::tail_weights<right>, tag::tail_variate<int, tag::covariate1, right> >, int > acc(
  39         right_tail_cache_size = 4
  40     );
  41
  42     acc(010, weight = 2, covariate1 = 3);
  43     check_tail(tail(acc), "\10");
  44     check_tail(tail_variate(acc), "\3");
  45     check_tail(tail_weights(acc), "\2");
  46
  47     acc(020, weight = 7, covariate1 = 1);
  48     check_tail(tail(acc), "\20\10");
  49     check_tail(tail_variate(acc), "\1\3");
  50     check_tail(tail_weights(acc), "\7\2");
  51
  52     acc(014, weight = 6, covariate1 = 4);
  53     check_tail(tail(acc), "\20\14\10");
  54     check_tail(tail_variate(acc), "\1\4\3");
  55     check_tail(tail_weights(acc), "\7\6\2");
  56
  57     acc(030, weight = 4, covariate1 = 5);
  58     check_tail(tail(acc), "\30\20\14\10");
  59     check_tail(tail_variate(acc), "\5\1\4\3");
  60     check_tail(tail_weights(acc), "\4\7\6\2");
  61
  62     acc(001, weight = 1, covariate1 = 9);
  63     check_tail(tail(acc), "\30\20\14\10");
  64     check_tail(tail_variate(acc), "\5\1\4\3");
  65     check_tail(tail_weights(acc), "\4\7\6\2");
  66
  67     acc(011, weight = 3, covariate1 = 7);
  68     check_tail(tail(acc), "\30\20\14\11");
  69     check_tail(tail_variate(acc), "\5\1\4\7");
  70     check_tail(tail_weights(acc), "\4\7\6\3");
  71
  72 }
  73
  74 ///////////////////////////////////////////////////////////////////////////////
  75 // test_left_tail
  76 //
  77 void test_left_tail()
  78 {
  79     accumulator_set<int, stats<tag::tail_weights<left>, tag::tail_variate<int, tag::covariate1, left> >, int > acc(
  80         left_tail_cache_size = 4
  81     );
  82
  83     acc(010, weight = 2, covariate1 = 3);
  84     check_tail(tail(acc), "\10");
  85     check_tail(tail_variate(acc), "\3");
  86     check_tail(tail_weights(acc), "\2");
  87
  88     acc(020, weight = 7, covariate1 = 1);
  89     check_tail(tail(acc), "\10\20");
  90     check_tail(tail_variate(acc), "\3\1");
  91     check_tail(tail_weights(acc), "\2\7");
  92
  93     acc(014, weight = 6, covariate1 = 4);
  94     check_tail(tail(acc), "\10\14\20");
  95     check_tail(tail_variate(acc), "\3\4\1");
  96     check_tail(tail_weights(acc), "\2\6\7");
  97
  98     acc(030, weight = 4, covariate1 = 5);
  99     check_tail(tail(acc), "\10\14\20\30");
 100     check_tail(tail_variate(acc), "\3\4\1\5");
 101     check_tail(tail_weights(acc), "\2\6\7\4");
 102
 103     acc(001, weight = 1, covariate1 = 9);
 104     check_tail(tail(acc), "\1\10\14\20");
 105     check_tail(tail_variate(acc), "\x9\3\4\1");
 106     check_tail(tail_weights(acc), "\1\2\6\7");
 107
 108     acc(011, weight = 3, covariate1 = 7);
 109     check_tail(tail(acc), "\1\10\11\14");
 110     check_tail(tail_variate(acc), "\x9\3\7\4");
 111     check_tail(tail_weights(acc), "\1\2\3\6");
 112 }
 113
 114 ///////////////////////////////////////////////////////////////////////////////
 115 // init_unit_test_suite
 116 //
 117 test_suite* init_unit_test_suite( int argc, char* argv[] )
 118 {
 119     test_suite *test = BOOST_TEST_SUITE("tail test");
 120
 121     test->add(BOOST_TEST_CASE(&test_right_tail));
 122     test->add(BOOST_TEST_CASE(&test_left_tail));
 123
 124     return test;
 125 }
 126