ceph/src/boost/libs/system/test/error_category_test.cpp

   1
   2 // Copyright 2018 Peter Dimov.
   3 //
   4 // Distributed under the Boost Software License, Version 1.0.
   5 //
   6 // See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt
   8
   9 // See library home page at http://www.boost.org/libs/system
  10
  11 // Avoid spurious VC++ warnings
  12 # define _CRT_SECURE_NO_WARNINGS
  13
  14 #include <boost/system/error_code.hpp>
  15 #include <boost/core/lightweight_test.hpp>
  16 #include <cstdio>
  17
  18 //
  19
  20 namespace sys = boost::system;
  21
  22 class user_category: public sys::error_category
  23 {
  24 public:
  25
  26     virtual const char * name() const BOOST_NOEXCEPT
  27     {
  28         return "user";
  29     }
  30
  31     virtual std::string message( int ev ) const
  32     {
  33         char buffer[ 256 ];
  34         std::sprintf( buffer, "user message %d", ev );
  35
  36         return buffer;
  37     }
  38
  39     using sys::error_category::message;
  40 };
  41
  42 static user_category s_cat_1;
  43 static user_category s_cat_2;
  44
  45 int main()
  46 {
  47     // default_error_condition
  48
  49     BOOST_TEST( s_cat_1.default_error_condition( 1 ) == sys::error_condition( 1, s_cat_1 ) );
  50     BOOST_TEST( s_cat_2.default_error_condition( 2 ) == sys::error_condition( 2, s_cat_2 ) );
  51
  52     // equivalent
  53
  54     BOOST_TEST( s_cat_1.equivalent( 1, sys::error_condition( 1, s_cat_1 ) ) );
  55     BOOST_TEST( !s_cat_1.equivalent( 1, sys::error_condition( 2, s_cat_1 ) ) );
  56     BOOST_TEST( !s_cat_1.equivalent( 1, sys::error_condition( 2, s_cat_2 ) ) );
  57
  58     // the other equivalent
  59
  60     BOOST_TEST( s_cat_1.equivalent( sys::error_code( 1, s_cat_1 ), 1 ) );
  61     BOOST_TEST( !s_cat_1.equivalent( sys::error_code( 1, s_cat_1 ), 2 ) );
  62     BOOST_TEST( !s_cat_1.equivalent( sys::error_code( 1, s_cat_2 ), 1 ) );
  63
  64     // message
  65
  66     {
  67         char buffer[ 256 ];
  68         BOOST_TEST_CSTR_EQ( s_cat_1.message( 1, buffer, sizeof( buffer ) ), s_cat_1.message( 1 ).c_str() );
  69     }
  70
  71     {
  72         char buffer[ 4 ];
  73         BOOST_TEST_CSTR_EQ( s_cat_1.message( 1, buffer, sizeof( buffer ) ), "use" );
  74     }
  75
  76     // ==
  77
  78     BOOST_TEST_NOT( s_cat_1 == s_cat_2 );
  79     BOOST_TEST( s_cat_1 != s_cat_2 );
  80
  81     return boost::report_errors();
  82 }