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
name() const26 virtual const char * name() const BOOST_NOEXCEPT
27 {
28 return "user";
29 }
30
message(int ev) const31 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
main()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 }
83