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// -----------------------------------------------------------
// Copyright (c) 2001 Jeremy Siek
// Copyright (c) 2003-2006, 2025 Gennaro Prota
//
// 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)
//
// -----------------------------------------------------------
#include "bitset_test.hpp"
#include "boost/config.hpp"
#include "boost/dynamic_bitset/dynamic_bitset.hpp"
#include <assert.h>
#include <cstddef>
#include <fstream>
#include <stdexcept>
#include <string>
#if ! defined( BOOST_NO_STRINGSTREAM )
# include <sstream>
#endif
#if defined BOOST_NO_STD_WSTRING
# define BOOST_DYNAMIC_BITSET_NO_WCHAR_T_TESTS
#endif
#if ! defined BOOST_DYNAMIC_BITSET_NO_WCHAR_T_TESTS
std::wstring
widen_string( const std::string & str, const std::locale & loc = std::locale() )
{
std::wstring result;
const std::string::size_type len = str.length();
if ( len != 0 ) {
typedef std::ctype< wchar_t > ct_type;
typedef std::wstring::traits_type tr_type;
const ct_type & ct = std::use_facet< ct_type >( loc );
result.resize( len );
for ( std::size_t i = 0; i < len; ++i )
tr_type::assign( result[ i ], ct.widen( str[ i ] ) );
}
return result;
}
#endif
template< typename Block, typename AllocatorOrContainer = std::allocator< Block > >
void
run_test_cases()
{
typedef boost::dynamic_bitset< Block, AllocatorOrContainer > bitset_type;
typedef bitset_test< bitset_type > Tests;
//=====================================================================
// Test stream operator<<
{
// The test "variables" are: the stream type and its state, the
// exception mask, the width, the fill char and the padding side (left/right)
std::ios::iostate masks[] = {
std::ios::goodbit,
std::ios::eofbit,
std::ios::failbit,
std::ios::eofbit | std::ios::failbit
};
static std::string strings[] = {
std::string( "" ),
std::string( "0" ),
std::string( "1" ),
std::string( "11100" ),
get_long_string()
};
char fill_chars[] = { '*', 'x', ' ' };
std::size_t num_masks = sizeof( masks ) / sizeof( masks[ 0 ] );
std::size_t num_strings = sizeof( strings ) / sizeof( strings[ 0 ] );
std::size_t num_chars = sizeof( fill_chars ) / sizeof( fill_chars[ 0 ] );
std::fstream not_good_stream( "dynamic_bitset_tests - this file shouldn't exist", std::ios::in );
for ( std::size_t mi = 0; mi < num_masks; ++mi ) {
for ( std::size_t si = 0; si < num_strings; ++si ) {
std::streamsize slen = (std::streamsize)( strings[ si ].length() );
assert( ( std::numeric_limits< std::streamsize >::max )() >= (std::streamsize)( 1 + slen * 2 ) );
for ( std::size_t ci = 0; ci < num_chars; ++ci ) {
// note how "negative widths" are tested too
const std::streamsize widths[] = { -1 - slen / 2, 0, slen / 2, 1 + slen * 2 };
std::size_t num_widths = sizeof( widths ) / sizeof( widths[ 0 ] );
for ( std::size_t wi = 0; wi < num_widths; ++wi ) {
std::streamsize w = widths[ wi ];
{
// test 0 - stream !good()
if ( not_good_stream.good() )
throw std::logic_error( "Error in operator << tests"
" - please, double check" );
bitset_type b( strings[ si ] );
not_good_stream.width( w );
not_good_stream.fill( fill_chars[ ci ] );
try {
not_good_stream.exceptions( masks[ mi ] );
} catch ( ... ) {
}
Tests::stream_inserter( b, not_good_stream, "<unused_string>" );
}
{
// test 1a - file stream
scoped_temp_file stf;
bitset_type b( strings[ si ] );
std::ofstream file( stf.path().string().c_str(), std::ios::trunc );
file.width( w );
file.fill( fill_chars[ ci ] );
file.exceptions( masks[ mi ] );
Tests::stream_inserter( b, file, stf.path().string().c_str() );
}
{
// NOTE: there are NO string stream tests
}
#if ! defined( BOOST_DYNAMIC_BITSET_NO_WCHAR_T_TESTS )
{
// test 1b - wide file stream
scoped_temp_file stf;
bitset_type b( strings[ si ] );
std::wofstream file( stf.path().string().c_str() );
file.width( w );
file.fill( fill_chars[ ci ] );
file.exceptions( masks[ mi ] );
Tests::stream_inserter( b, file, stf.path().string().c_str() );
}
#endif
}
}
}
} // for (; mi..)
}
//=====================================================================
// Test stream operator>>
{
// The test "variables" are: the stream type, the exception mask,
// the actual contents (and/or state) of the stream, and width.
//
// With few exceptions, each test case consists of writing a different
// assortment of digits and "whitespaces" to a text stream and then checking
// that what was written gets read back unchanged. That's NOT guaranteed by
// the standard, unless the assortment always ends with a '\n' and satisfies
// other conditions (see C99, 7.19.2/2), however it works in practice and is
// a good "real life" test. Some characters, such as '\v' and '\f', are not
// used exactly because they are the ones which will most likely give problems
// on some systems (for instance '\f' could actually be written as a sequence
// of new-lines, and we could never be able to read it back)
//
// Note how the bitset object is not initially empty. That helps checking
// that it isn't erroneously clear()ed by operator>>.
std::ios::iostate masks[] = {
std::ios::goodbit,
std::ios::eofbit,
std::ios::failbit,
std::ios::eofbit | std::ios::failbit
};
const std::string spaces = "\t\n "; //"\t\n\v\f ";
const std::string long_string = get_long_string();
const static std::string strings[] = {
// empty string
std::string( "" ),
// no bitset
spaces,
// no bitset
std::string( "x" ),
std::string( "\t xyz" ),
// bitset of size 1
std::string( "0" ),
std::string( "1" ),
std::string( " 0 " ),
std::string( " 1 " ),
spaces + "1",
"1" + spaces,
spaces + "1" + spaces,
std::string( " x1x " ),
std::string( " 1x " ),
// long bitset
long_string,
" " + long_string + " xyz",
spaces + long_string,
spaces + long_string + spaces
};
//-----------------------------------------------------
std::stringstream not_good_stream;
not_good_stream << "test";
std::string sink;
not_good_stream >> sink; // now the stream should be in eof state
const std::size_t num_masks = sizeof( masks ) / sizeof( masks[ 0 ] );
const std::size_t num_strings = sizeof( strings ) / sizeof( strings[ 0 ] );
for ( std::size_t mi = 0; mi < num_masks; ++mi ) {
for ( std::size_t si = 0; si < num_strings; ++si ) {
const std::streamsize slen = (std::streamsize)( strings[ si ].length() );
assert( ( std::numeric_limits< std::streamsize >::max )() >= (std::streamsize)( 1 + slen * 2 ) );
std::streamsize widths[] = { -1, 0, slen / 2, slen, 1 + slen * 2 };
std::size_t num_widths = sizeof( widths ) / sizeof( widths[ 0 ] );
for ( std::size_t wi = 0; wi < num_widths; ++wi ) {
const std::streamsize w = widths[ wi ];
// test 0 - !good() stream
{
if ( not_good_stream.good() )
throw std::logic_error( "Error in operator >> tests"
" - please, double check" );
bitset_type b( 1, 15ul ); // note: b is not empty
not_good_stream.width( w );
try {
not_good_stream.exceptions( masks[ mi ] );
} catch ( ... ) {
}
std::string irrelevant;
Tests::stream_extractor( b, not_good_stream, irrelevant );
}
// test 1a - (narrow) file stream
{
scoped_temp_file stf;
bitset_type b( 1, 255ul );
{
std::ofstream f( stf.path().string().c_str() );
f << strings[ si ];
}
std::ifstream f( stf.path().string().c_str() );
f.width( w );
f.exceptions( masks[ mi ] );
Tests::stream_extractor( b, f, strings[ si ] );
}
#if ! defined( BOOST_NO_STRINGSTREAM )
// test 2a - stringstream
{
bitset_type b( 1, 255ul );
std::istringstream stream( strings[ si ] );
stream.width( w );
stream.exceptions( masks[ mi ] );
Tests::stream_extractor( b, stream, strings[ si ] );
}
#endif
#if ! defined( BOOST_DYNAMIC_BITSET_NO_WCHAR_T_TESTS )
// test 1b - wchar_t file stream
{
scoped_temp_file stf;
std::wstring wstr = widen_string( strings[ si ] );
bitset_type b( 1, 255ul );
{
std::basic_ofstream< wchar_t > of( stf.path().string().c_str() );
of << wstr;
}
std::basic_ifstream< wchar_t > f( stf.path().string().c_str() );
f.width( w );
f.exceptions( masks[ mi ] );
Tests::stream_extractor( b, f, wstr );
}
// test 2b - wstringstream
{
bitset_type b( 1, 255ul );
std::wstring wstr = widen_string( strings[ si ] );
std::wistringstream wstream( wstr );
wstream.width( w );
wstream.exceptions( masks[ mi ] );
Tests::stream_extractor( b, wstream, wstr );
}
#endif // BOOST_DYNAMIC_BITSET_NO_WCHAR_T_TESTS
}
}
} // for ( mi = 0; ...)
}
//=====================================================================
// << Any other tests go here >>
// .....
}
int
main()
{
run_test_cases< unsigned char >();
run_test_cases< unsigned char, small_vector< unsigned char > >();
run_test_cases< unsigned short >();
run_test_cases< unsigned short, small_vector< unsigned short > >();
run_test_cases< unsigned int >();
run_test_cases< unsigned int, small_vector< unsigned int > >();
run_test_cases< unsigned long >();
run_test_cases< unsigned long, small_vector< unsigned long > >();
run_test_cases< unsigned long long >();
run_test_cases< unsigned long long, small_vector< unsigned long long > >();
return boost::report_errors();
}
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