ceph/src/boost/libs/log/test/run/attr_value_visitation.cpp

   1 /*
   2  *          Copyright Andrey Semashev 2007 - 2015.
   3  * Distributed under the Boost Software License, Version 1.0.
   4  *    (See accompanying file LICENSE_1_0.txt or copy at
   5  *          http://www.boost.org/LICENSE_1_0.txt)
   6  */
   7 /*!
   8  * \file   attr_value_visitation.cpp
   9  * \author Andrey Semashev
  10  * \date   21.01.2009
  11  *
  12  * \brief  This header contains tests for the attribute value extraction helpers.
  13  */
  14
  15 #define BOOST_TEST_MODULE attr_value_visitation
  16
  17 #include <string>
  18 #include <boost/mpl/vector.hpp>
  19 #include <boost/test/unit_test.hpp>
  20 #include <boost/test/tools/floating_point_comparison.hpp>
  21 #include <boost/log/attributes/value_visitation.hpp>
  22 #include <boost/log/attributes/constant.hpp>
  23 #include <boost/log/attributes/attribute_set.hpp>
  24 #include <boost/log/attributes/attribute_value_set.hpp>
  25 #include "char_definitions.hpp"
  26
  27 namespace mpl = boost::mpl;
  28 namespace logging = boost::log;
  29 namespace attrs = logging::attributes;
  30
  31 namespace {
  32
  33     // The receiver functional object that verifies the extracted attribute values
  34     struct my_receiver
  35     {
  36         typedef void result_type;
  37
  38         enum type_expected
  39         {
  40             none_expected,
  41             int_expected,
  42             double_expected,
  43             string_expected
  44         };
  45
  46         my_receiver() : m_Expected(none_expected), m_Int(0), m_Double(0.0) {}
  47
  48         void set_expected()
  49         {
  50             m_Expected = none_expected;
  51         }
  52         void set_expected(int value)
  53         {
  54             m_Expected = int_expected;
  55             m_Int = value;
  56         }
  57         void set_expected(double value)
  58         {
  59             m_Expected = double_expected;
  60             m_Double = value;
  61         }
  62         void set_expected(std::string const& value)
  63         {
  64             m_Expected = string_expected;
  65             m_String = value;
  66         }
  67
  68         // Implement visitation logic for all supported types
  69         void operator() (int const& value)
  70         {
  71             BOOST_CHECK_EQUAL(m_Expected, int_expected);
  72             BOOST_CHECK_EQUAL(m_Int, value);
  73         }
  74         void operator() (double const& value)
  75         {
  76             BOOST_CHECK_EQUAL(m_Expected, double_expected);
  77             BOOST_CHECK_CLOSE(m_Double, value, 0.001);
  78         }
  79         void operator() (std::string const& value)
  80         {
  81             BOOST_CHECK_EQUAL(m_Expected, string_expected);
  82             BOOST_CHECK_EQUAL(m_String, value);
  83         }
  84         void operator() (char value)
  85         {
  86             // This one should not be called
  87             BOOST_ERROR("The unexpected operator() has been called");
  88         }
  89
  90     private:
  91         type_expected m_Expected;
  92         int m_Int;
  93         double m_Double;
  94         std::string m_String;
  95     };
  96
  97 } // namespace
  98
  99 // The test checks invokers specialized on a single attribute value type
 100 BOOST_AUTO_TEST_CASE(single_type)
 101 {
 102     typedef logging::attribute_set attr_set;
 103     typedef logging::attribute_value_set attr_values;
 104     typedef test_data< char > data;
 105
 106     attrs::constant< int > attr1(10);
 107     attrs::constant< double > attr2(5.5);
 108     attrs::constant< std::string > attr3("Hello, world!");
 109
 110     attr_set set1, set2, set3;
 111     set1[data::attr1()] = attr1;
 112     set1[data::attr2()] = attr2;
 113
 114     attr_values values1(set1, set2, set3);
 115     values1.freeze();
 116
 117     my_receiver recv;
 118
 119     logging::value_visitor_invoker< int > invoker1;
 120     logging::value_visitor_invoker< double > invoker2;
 121     logging::value_visitor_invoker< std::string > invoker3;
 122     logging::value_visitor_invoker< char > invoker4;
 123
 124     // These two extractors will find their values in the set
 125     recv.set_expected(10);
 126     BOOST_CHECK(invoker1(data::attr1(), values1, recv));
 127
 128     recv.set_expected(5.5);
 129     BOOST_CHECK(invoker2(data::attr2(), values1, recv));
 130
 131     // This one will not
 132     recv.set_expected();
 133     BOOST_CHECK(!invoker3(data::attr3(), values1, recv));
 134
 135     // But it will find it in this set
 136     set1[data::attr3()] = attr3;
 137
 138     attr_values values2(set1, set2, set3);
 139     values2.freeze();
 140
 141     recv.set_expected("Hello, world!");
 142     BOOST_CHECK(invoker3(data::attr3(), values2, recv));
 143
 144     // This one will find the sought attribute value, but it will have an incorrect type
 145     recv.set_expected();
 146     BOOST_CHECK(!invoker4(data::attr1(), values1, recv));
 147
 148     // This one is the same, but there is a value of the requested type in the set
 149     BOOST_CHECK(!invoker1(data::attr2(), values1, recv));
 150 }
 151
 152
 153 // The test checks invokers specialized with type lists
 154 BOOST_AUTO_TEST_CASE(multiple_types)
 155 {
 156     typedef logging::attribute_set attr_set;
 157     typedef logging::attribute_value_set attr_values;
 158     typedef test_data< char > data;
 159     typedef mpl::vector< int, double, std::string, char >::type types;
 160
 161     attrs::constant< int > attr1(10);
 162     attrs::constant< double > attr2(5.5);
 163     attrs::constant< std::string > attr3("Hello, world!");
 164
 165     attr_set set1, set2, set3;
 166     set1[data::attr1()] = attr1;
 167     set1[data::attr2()] = attr2;
 168
 169     attr_values values1(set1, set2, set3);
 170     values1.freeze();
 171
 172     my_receiver recv;
 173
 174     logging::value_visitor_invoker< types > invoker;
 175
 176     // These two extractors will find their values in the set
 177     recv.set_expected(10);
 178     BOOST_CHECK(invoker(data::attr1(), values1, recv));
 179
 180     recv.set_expected(5.5);
 181     BOOST_CHECK(invoker(data::attr2(), values1, recv));
 182
 183     // This one will not
 184     recv.set_expected();
 185     BOOST_CHECK(!invoker(data::attr3(), values1, recv));
 186
 187     // But it will find it in this set
 188     set1[data::attr3()] = attr3;
 189
 190     attr_values values2(set1, set2, set3);
 191     values2.freeze();
 192
 193     recv.set_expected("Hello, world!");
 194     BOOST_CHECK(invoker(data::attr3(), values2, recv));
 195 }
 196
 197 // The test verifies the visit function
 198 BOOST_AUTO_TEST_CASE(visit_function)
 199 {
 200     typedef logging::attribute_set attr_set;
 201     typedef logging::attribute_value_set attr_values;
 202     typedef test_data< char > data;
 203     typedef mpl::vector< int, double, std::string, char >::type types;
 204
 205     attrs::constant< int > attr1(10);
 206     attrs::constant< double > attr2(5.5);
 207     attrs::constant< std::string > attr3("Hello, world!");
 208
 209     attr_set set1, set2, set3;
 210     set1[data::attr1()] = attr1;
 211     set1[data::attr2()] = attr2;
 212
 213     attr_values values1(set1, set2, set3);
 214     values1.freeze();
 215
 216     my_receiver recv;
 217
 218     // These two extractors will find their values in the set
 219     recv.set_expected(10);
 220     BOOST_CHECK(logging::visit< types >(data::attr1(), values1, recv));
 221
 222     recv.set_expected(5.5);
 223     BOOST_CHECK(logging::visit< double >(data::attr2(), values1, recv));
 224
 225     // These will not
 226     recv.set_expected();
 227     BOOST_CHECK(!logging::visit< types >(data::attr3(), values1, recv));
 228     BOOST_CHECK(!logging::visit< char >(data::attr1(), values1, recv));
 229
 230     // But it will find it in this set
 231     set1[data::attr3()] = attr3;
 232
 233     attr_values values2(set1, set2, set3);
 234     values2.freeze();
 235
 236     recv.set_expected("Hello, world!");
 237     BOOST_CHECK(logging::visit< std::string >(data::attr3(), values2, recv));
 238 }