test_tools.ipp

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//  (C) Copyright Gennadiy Rozental 2005-2008.
//  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 http://www.boost.org/libs/test for the library home page.
//
//  File        : $RCSfile$
//
//  Version     : $Revision: 49312 $
//
//  Description : supplies offline implementation for the Test Tools
// ***************************************************************************

#ifndef BOOST_TEST_TEST_TOOLS_IPP_012205GER
#define BOOST_TEST_TEST_TOOLS_IPP_012205GER

// Boost.Test
#include <boost/test/test_tools.hpp>
#include <boost/test/unit_test_log.hpp>
#include <boost/test/output_test_stream.hpp>
#include <boost/test/framework.hpp>
#include <boost/test/execution_monitor.hpp> // execution_aborted
#include <boost/test/unit_test_suite_impl.hpp>

// Boost
#include <boost/config.hpp>

// STL
#include <fstream>
#include <string>
#include <cstring>
#include <cctype>
#include <cwchar>
#include <stdexcept>
#include <ios>

// !! should we use #include <cstdarg>
#include <stdarg.h>

#include <boost/test/detail/suppress_warnings.hpp>

//____________________________________________________________________________//

# ifdef BOOST_NO_STDC_NAMESPACE
namespace std { using ::strcmp; using ::strlen; using ::isprint; }
#if !defined( BOOST_NO_CWCHAR )
namespace std { using ::wcscmp; }
#endif
# endif

namespace boost {

namespace test_tools {

// ************************************************************************** //
// **************                print_log_value               ************** //
// ************************************************************************** //

void
print_log_value<char>::operator()( std::ostream& ostr, char t )
{
    if( (std::isprint)( (unsigned char)t ) )
        ostr << '\'' << t << '\'';
    else
        ostr << std::hex
#if BOOST_TEST_USE_STD_LOCALE
        << std::showbase
#else
        << "0x"
#endif
        << (int)t;
}

//____________________________________________________________________________//

void
print_log_value<unsigned char>::operator()( std::ostream& ostr, unsigned char t )
{
    ostr << std::hex
        // showbase is only available for new style streams:
#if BOOST_TEST_USE_STD_LOCALE
        << std::showbase
#else
        << "0x"
#endif
        << (int)t;
}

//____________________________________________________________________________//

void
print_log_value<char const*>::operator()( std::ostream& ostr, char const* t )
{
    ostr << ( t ? t : "null string" );
}

//____________________________________________________________________________//

void
print_log_value<wchar_t const*>::operator()( std::ostream& ostr, wchar_t const* t )
{
    ostr << ( t ? t : L"null string" );
}

//____________________________________________________________________________//

namespace tt_detail {

// ************************************************************************** //
// **************            TOOL BOX Implementation           ************** //
// ************************************************************************** //

using ::boost::unit_test::lazy_ostream;

bool
check_impl( predicate_result const& pr, lazy_ostream const& check_descr,
            const_string file_name, std::size_t line_num,
            tool_level tl, check_type ct,
            std::size_t num_of_args, ... )
{
    using namespace unit_test;

    if( !framework::is_initialized() )
        throw std::runtime_error( "can't use testing tools before framework is initialized" );

    if( !!pr )
        tl = PASS;

    log_level    ll;
    char const*  prefix;
    char const*  suffix;
       
    switch( tl ) {
    case PASS:
        ll      = log_successful_tests;
        prefix  = "check ";
        suffix  = " passed";
        break;
    case WARN:
        ll      = log_warnings;
        prefix  = "condition ";
        suffix  = " is not satisfied";
        break;
    case CHECK:
        ll      = log_all_errors;
        prefix  = "check ";
        suffix  = " failed";
        break;
    case REQUIRE:
        ll      = log_fatal_errors;
        prefix  = "critical check ";
        suffix  = " failed";
        break;
    default:
        return true;
    }

    switch( ct ) {
    case CHECK_PRED:
        unit_test_log << unit_test::log::begin( file_name, line_num ) 
                      << ll << prefix << check_descr << suffix;
        
        if( !pr.has_empty_message() )
            unit_test_log << ". " << pr.message();
        
        unit_test_log << unit_test::log::end();
        break;

    case CHECK_MSG:
        unit_test_log << unit_test::log::begin( file_name, line_num ) << ll;
        
        if( tl == PASS )
            unit_test_log << prefix << "'" << check_descr << "'" << suffix;
        else
            unit_test_log << check_descr;
        
        if( !pr.has_empty_message() )
            unit_test_log << ". " << pr.message();

        unit_test_log << unit_test::log::end();
        break;

    case CHECK_EQUAL: 
    case CHECK_NE: 
    case CHECK_LT: 
    case CHECK_LE: 
    case CHECK_GT: 
    case CHECK_GE: {
        static char const* check_str [] = { " == ", " != ", " < " , " <= ", " > " , " >= " };
        static char const* rever_str [] = { " != ", " == ", " >= ", " > " , " <= ", " < "  };

        va_list args;

        va_start( args, num_of_args );
        char const*         arg1_descr  = va_arg( args, char const* );
        lazy_ostream const* arg1_val    = va_arg( args, lazy_ostream const* );
        char const*         arg2_descr  = va_arg( args, char const* );
        lazy_ostream const* arg2_val    = va_arg( args, lazy_ostream const* );

        unit_test_log << unit_test::log::begin( file_name, line_num ) 
                      << ll << prefix << arg1_descr << check_str[ct-CHECK_EQUAL] << arg2_descr << suffix;

        if( tl != PASS )
            unit_test_log << " [" << *arg1_val << rever_str[ct-CHECK_EQUAL] << *arg2_val << "]" ;

        va_end( args );
        
        if( !pr.has_empty_message() )
            unit_test_log << ". " << pr.message();

        unit_test_log << unit_test::log::end();
        break;
    }

    case CHECK_CLOSE:
    case CHECK_CLOSE_FRACTION: {
        va_list args;

        va_start( args, num_of_args );
        char const*         arg1_descr  = va_arg( args, char const* );
        lazy_ostream const* arg1_val    = va_arg( args, lazy_ostream const* );
        char const*         arg2_descr  = va_arg( args, char const* );
        lazy_ostream const* arg2_val    = va_arg( args, lazy_ostream const* );
        /* toler_descr = */               va_arg( args, char const* );
        lazy_ostream const* toler_val   = va_arg( args, lazy_ostream const* );

        unit_test_log << unit_test::log::begin( file_name, line_num ) << ll;

        unit_test_log << "difference between " << arg1_descr << "{" << *arg1_val << "}" 
                      << " and "               << arg2_descr << "{" << *arg2_val << "}"
                      << ( tl == PASS ? " doesn't exceed " : " exceeds " )
                      << *toler_val;
        if( ct == CHECK_CLOSE )
            unit_test_log << "%";

        va_end( args );
        
        if( !pr.has_empty_message() )
            unit_test_log << ". " << pr.message();

        unit_test_log << unit_test::log::end();
        break;
    }
    case CHECK_SMALL: {
        va_list args;

        va_start( args, num_of_args );
        char const*         arg1_descr  = va_arg( args, char const* );
        lazy_ostream const* arg1_val    = va_arg( args, lazy_ostream const* );
        /* toler_descr = */               va_arg( args, char const* );
        lazy_ostream const* toler_val   = va_arg( args, lazy_ostream const* );

        unit_test_log << unit_test::log::begin( file_name, line_num ) << ll;

        unit_test_log << "absolute value of " << arg1_descr << "{" << *arg1_val << "}" 
                      << ( tl == PASS ? " doesn't exceed " : " exceeds " )
                      << *toler_val;

        va_end( args );
        
        if( !pr.has_empty_message() )
            unit_test_log << ". " << pr.message();

        unit_test_log << unit_test::log::end();
        break;
    }

    case CHECK_PRED_WITH_ARGS: {
        unit_test_log << unit_test::log::begin( file_name, line_num ) 
                      << ll << prefix << check_descr;

        // print predicate call description
        {
            va_list args;
            va_start( args, num_of_args );

            unit_test_log << "( ";
            for( std::size_t i = 0; i < num_of_args; ++i ) {
                unit_test_log << va_arg( args, char const* );
                va_arg( args, lazy_ostream const* ); // skip argument value;
                
                if( i != num_of_args-1 )
                    unit_test_log << ", ";
            }
            unit_test_log << " )" << suffix;
            va_end( args );
        }
                        
        if( tl != PASS ) {
            va_list args;
            va_start( args, num_of_args );

            unit_test_log << " for ( ";
            for( std::size_t i = 0; i < num_of_args; ++i ) {
                va_arg( args, char const* ); // skip argument description;            
                unit_test_log << *va_arg( args, lazy_ostream const* );
                
                if( i != num_of_args-1 )
                    unit_test_log << ", ";
            }
            unit_test_log << " )";
            va_end( args );
        }
       
        if( !pr.has_empty_message() )
            unit_test_log << ". " << pr.message();

        unit_test_log << unit_test::log::end();
        break;
    }

    case CHECK_EQUAL_COLL: {
        va_list args;

        va_start( args, num_of_args );