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system/test/error_code_test.cpp

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// error_code_test.cpp -----------------------------------------------------//
// Copyright Beman Dawes 2006
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See library home page at http://www.boost.org/libs/system
//----------------------------------------------------------------------------//
// VC++ 8.0 warns on usage of certain Standard Library and API functions that
// can cause buffer overruns or other possible security issues if misused.
// See http://msdn.microsoft.com/msdnmag/issues/05/05/SafeCandC/default.aspx
// But the wording of the warning is misleading and unsettling, there are no
// portable alternative functions, and VC++ 8.0's own libraries use the
// functions in question. So turn off the warnings.
#define _CRT_SECURE_NO_DEPRECATE
#define _SCL_SECURE_NO_DEPRECATE
#include <boost/test/minimal.hpp>
#include <boost/system/error_code.hpp>
#include <iostream>
#include <sstream>
#include <string>
#include <cstring>
#include <functional>
#include <boost/cerrno.hpp>
// Although using directives are not the best programming practice, testing
// with a boost::system using directive increases use scenario coverage.
using namespace boost::system;
# if defined( BOOST_WINDOWS_API )
# include "winerror.h"
# define BOOST_ACCESS_ERROR_MACRO ERROR_ACCESS_DENIED
# elif defined( BOOST_POSIX_API )
# define BOOST_ACCESS_ERROR_MACRO EACCES
# else
# error "Only supported for POSIX and Windows"
# endif
namespace
{
void check_ostream( error_code ec, const char * expected )
{
std::stringstream ss;
std::string s;
ss << ec;
ss >> s;
BOOST_CHECK( s == expected );
}
}
// test_main ---------------------------------------------------------------//
// TODO: add hash_value tests
int test_main( int, char ** )
{
std::cout << "General tests...\n";
// unit tests:
BOOST_CHECK( posix_category == posix_category );
BOOST_CHECK( system_category == system_category );
BOOST_CHECK( posix_category != system_category );
BOOST_CHECK( system_category != posix_category );
if ( std::less<const error_category*>()( &posix_category, &system_category ) )
{
BOOST_CHECK( posix_category < system_category );
BOOST_CHECK( !(system_category < posix_category) );
}
else
{
BOOST_CHECK( system_category < posix_category );
BOOST_CHECK( !(posix_category < system_category) );
}
error_code ec;
error_condition dec;
BOOST_CHECK( !ec );
BOOST_CHECK( ec.value() == 0 );
dec = ec.default_error_condition();
BOOST_CHECK( dec.value() == 0 );
BOOST_CHECK( dec.category() == posix_category );
BOOST_CHECK( ec == posix::success );
BOOST_CHECK( ec.category() == system_category );
BOOST_CHECK( std::strcmp( ec.category().name(), "system") == 0 );
BOOST_CHECK( !(ec < error_code( 0, system_category )) );
BOOST_CHECK( !(error_code( 0, system_category ) < ec) );
BOOST_CHECK( ec < error_code( 1, system_category ) );
BOOST_CHECK( !(error_code( 1, system_category ) < ec) );
error_code ec_0_system( 0, system_category );
BOOST_CHECK( !ec_0_system );
BOOST_CHECK( ec_0_system.value() == 0 );
dec = ec_0_system.default_error_condition();
BOOST_CHECK( dec.value() == 0 );
BOOST_CHECK( dec.category() == posix_category );
BOOST_CHECK( ec_0_system == posix::success );
BOOST_CHECK( ec_0_system.category() == system_category );
BOOST_CHECK( std::strcmp( ec_0_system.category().name(), "system") == 0 );
check_ostream( ec_0_system, "system:0" );
BOOST_CHECK( ec_0_system == ec );
error_code ec_1_system( 1, system_category );
BOOST_CHECK( ec_1_system );
BOOST_CHECK( ec_1_system.value() == 1 );
BOOST_CHECK( ec_1_system.value() != 0 );
BOOST_CHECK( ec != ec_1_system );
BOOST_CHECK( ec_0_system != ec_1_system );
check_ostream( ec_1_system, "system:1" );
ec = error_code( BOOST_ACCESS_ERROR_MACRO, system_category );
BOOST_CHECK( ec );
BOOST_CHECK( ec.value() == BOOST_ACCESS_ERROR_MACRO );
dec = ec.default_error_condition();
BOOST_CHECK( dec.value() == static_cast<int>(posix::permission_denied) );
BOOST_CHECK( dec.category() == posix_category );
BOOST_CHECK( dec == error_condition( posix::permission_denied, posix_category ) );
BOOST_CHECK( dec == posix::permission_denied );
BOOST_CHECK( posix::permission_denied == dec );
BOOST_CHECK( ec == posix::permission_denied );
BOOST_CHECK( ec.category() == system_category );
BOOST_CHECK( std::strcmp( ec.category().name(), "system") == 0 );
// test the explicit make_error_code conversion for posix
ec = make_error_code( posix::bad_message );
BOOST_CHECK( ec );
BOOST_CHECK( ec == posix::bad_message );
BOOST_CHECK( posix::bad_message == ec );
BOOST_CHECK( ec != posix::permission_denied );
BOOST_CHECK( posix::permission_denied != ec );
BOOST_CHECK( ec.category() == posix_category );
// test the deprecated predefined error_category synonyms
BOOST_CHECK( &system_category == &native_ecat );
BOOST_CHECK( &posix_category == &errno_ecat );
BOOST_CHECK( system_category == native_ecat );
BOOST_CHECK( posix_category == errno_ecat );
#ifdef BOOST_WINDOWS_API
std::cout << "Windows tests...\n";
// these tests probe the Windows posix decoder
// test the first entry in the decoder table:
ec = error_code( ERROR_ACCESS_DENIED, system_category );
BOOST_CHECK( ec.value() == ERROR_ACCESS_DENIED );
BOOST_CHECK( ec == posix::permission_denied );
BOOST_CHECK( ec.default_error_condition().value() == posix::permission_denied );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
// test the second entry in the decoder table:
ec = error_code( ERROR_ALREADY_EXISTS, system_category );
BOOST_CHECK( ec.value() == ERROR_ALREADY_EXISTS );
BOOST_CHECK( ec == posix::file_exists );
BOOST_CHECK( ec.default_error_condition().value() == posix::file_exists );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
// test the third entry in the decoder table:
ec = error_code( ERROR_BAD_UNIT, system_category );
BOOST_CHECK( ec.value() == ERROR_BAD_UNIT );
BOOST_CHECK( ec == posix::no_such_device );
BOOST_CHECK( ec.default_error_condition().value() == posix::no_such_device );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
// test the last non-Winsock entry in the decoder table:
ec = error_code( ERROR_WRITE_PROTECT, system_category );
BOOST_CHECK( ec.value() == ERROR_WRITE_PROTECT );
BOOST_CHECK( ec == posix::permission_denied );
BOOST_CHECK( ec.default_error_condition().value() == posix::permission_denied );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
// test the last Winsock entry in the decoder table:
ec = error_code( WSAEWOULDBLOCK, system_category );
BOOST_CHECK( ec.value() == WSAEWOULDBLOCK );
BOOST_CHECK( ec == posix::operation_would_block );
BOOST_CHECK( ec.default_error_condition().value() == posix::operation_would_block );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
// test not-in-table condition:
ec = error_code( 1234567890, system_category );
BOOST_CHECK( ec.value() == 1234567890 );
BOOST_CHECK( ec.default_error_condition().value() == 1234567890 );
BOOST_CHECK( ec.default_error_condition().category() == system_category );
#else // POSIX
std::cout << "POSIX tests...\n";
ec = error_code( EACCES, system_category );
BOOST_CHECK( ec == error_code( posix::permission_denied, system_category ) );
BOOST_CHECK( error_code( posix::permission_denied, system_category ) == ec );
BOOST_CHECK( ec == posix::permission_denied );
BOOST_CHECK( posix::permission_denied == ec );
BOOST_CHECK( ec.default_error_condition().value() == posix::permission_denied );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
# ifdef __CYGWIN__
std::cout << "Cygwin tests...\n";
ec = cygwin::no_package;
BOOST_CHECK( ec == cygwin::no_package );
BOOST_CHECK( ec == error_code( ENOPKG, system_category ) );
BOOST_CHECK( ec == error_code( cygwin::no_package, system_category ) );
BOOST_CHECK( ec.default_error_condition().category() == system_category );
# elif defined(linux) || defined(__linux) || defined(__linux__)
std::cout << "Linux tests...\n";
ec = Linux::dot_dot_error;
BOOST_CHECK( ec == Linux::dot_dot_error );
BOOST_CHECK( ec == error_code( EDOTDOT, system_category ) );
BOOST_CHECK( ec == error_code( Linux::dot_dot_error, system_category ) );
BOOST_CHECK( ec.default_error_condition().category() == system_category );
# endif
#endif
return 0;
}
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