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 | #include <boost/system/error_code.hpp> |
12 | #include <boost/core/lightweight_test.hpp> |
13 | #include <boost/core/snprintf.hpp> |
14 | #include <cstdio> |
15 | |
16 | // |
17 | |
18 | namespace sys = boost::system; |
19 | |
20 | class user_category: public sys::error_category |
21 | { |
22 | public: |
23 | |
24 | virtual const char * name() const noexcept |
25 | { |
26 | return "user" ; |
27 | } |
28 | |
29 | virtual std::string message( int ev ) const |
30 | { |
31 | char buffer[ 256 ]; |
32 | boost::core::snprintf( s: buffer, maxlen: sizeof( buffer ), format: "user message %d" , ev ); |
33 | |
34 | return buffer; |
35 | } |
36 | |
37 | using sys::error_category::message; |
38 | }; |
39 | |
40 | static user_category s_cat_1; |
41 | static user_category s_cat_2; |
42 | |
43 | int main() |
44 | { |
45 | // default_error_condition |
46 | |
47 | BOOST_TEST( s_cat_1.default_error_condition( 1 ) == sys::error_condition( 1, s_cat_1 ) ); |
48 | BOOST_TEST( s_cat_2.default_error_condition( 2 ) == sys::error_condition( 2, s_cat_2 ) ); |
49 | |
50 | // equivalent |
51 | |
52 | BOOST_TEST( s_cat_1.equivalent( 1, sys::error_condition( 1, s_cat_1 ) ) ); |
53 | BOOST_TEST( !s_cat_1.equivalent( 1, sys::error_condition( 2, s_cat_1 ) ) ); |
54 | BOOST_TEST( !s_cat_1.equivalent( 1, sys::error_condition( 2, s_cat_2 ) ) ); |
55 | |
56 | // the other equivalent |
57 | |
58 | BOOST_TEST( s_cat_1.equivalent( sys::error_code( 1, s_cat_1 ), 1 ) ); |
59 | BOOST_TEST( !s_cat_1.equivalent( sys::error_code( 1, s_cat_1 ), 2 ) ); |
60 | BOOST_TEST( !s_cat_1.equivalent( sys::error_code( 1, s_cat_2 ), 1 ) ); |
61 | |
62 | // message |
63 | |
64 | { |
65 | char buffer[ 256 ]; |
66 | BOOST_TEST_CSTR_EQ( s_cat_1.message( 1, buffer, sizeof( buffer ) ), s_cat_1.message( 1 ).c_str() ); |
67 | } |
68 | |
69 | { |
70 | char buffer[ 4 ]; |
71 | BOOST_TEST_CSTR_EQ( s_cat_1.message( 1, buffer, sizeof( buffer ) ), "use" ); |
72 | } |
73 | |
74 | // == |
75 | |
76 | BOOST_TEST_NOT( s_cat_1 == s_cat_2 ); |
77 | BOOST_TEST( s_cat_1 != s_cat_2 ); |
78 | |
79 | return boost::report_errors(); |
80 | } |
81 | |