1// Copyright 2017, 2021 Peter Dimov.
2// Distributed under the Boost Software License, Version 1.0.
3// https://www.boost.org/LICENSE_1_0.txt
4
5// See library home page at http://www.boost.org/libs/system
6
7#include <boost/system.hpp>
8#include <boost/core/lightweight_test.hpp>
9#include <cerrno>
10
11int main()
12{
13 boost::system::error_category const & bt = boost::system::generic_category();
14
15 int ev = ENOENT;
16
17 boost::system::error_code bc( ev, bt );
18
19 BOOST_TEST_EQ( bc.value(), ev );
20 BOOST_TEST_EQ( &bc.category(), &bt );
21
22 boost::system::error_condition bn = bt.default_error_condition( ev );
23
24 BOOST_TEST_EQ( bn.value(), ev );
25 BOOST_TEST_EQ( &bn.category(), &bt );
26
27 BOOST_TEST( bt.equivalent( ev, bn ) );
28
29 BOOST_TEST( bc == bn );
30
31 boost::system::error_code bc2 = make_error_code( e: boost::system::errc::no_such_file_or_directory );
32
33 BOOST_TEST_EQ( bc2, bc );
34 BOOST_TEST_EQ( bc2.value(), ev );
35 BOOST_TEST_EQ( &bc.category(), &bt );
36
37 boost::system::system_error x( bc, "prefix" );
38
39 BOOST_TEST_EQ( x.code(), bc );
40 BOOST_TEST_EQ( std::string( x.what() ), "prefix: " + bc.what() );
41
42 return boost::report_errors();
43}
44

source code of boost/libs/system/test/quick.cpp