basic_cstring_test.cpp

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//  (C) Copyright Gennadiy Rozental 2001-2008.
//  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: 49313 $
//
//  Description : basic_cstring unit test
// *****************************************************************************

#ifdef _MSC_VER
#pragma warning(disable: 4996)
#endif

// Boost.Test
#include <boost/test/unit_test.hpp>
#include <boost/test/test_case_template.hpp>

#include <boost/test/utils/basic_cstring/basic_cstring.hpp>
#include <boost/test/utils/basic_cstring/compare.hpp>
#include <boost/test/utils/basic_cstring/io.hpp>
#include <boost/test/output_test_stream.hpp>
namespace utf = boost::unit_test;
namespace tt  = boost::test_tools;
using utf::const_string;

// Boost
#include <boost/mpl/list.hpp>
#include <boost/mpl/joint_view.hpp>
#include <boost/mpl/transform.hpp>
#include <boost/type_traits/add_const.hpp>

// STL
#include <cctype>
#include <ctime>
#include <iomanip>
#include <iostream>
#include <stdexcept>

namespace mpl = boost::mpl;

#if defined(BOOST_NO_STD_WSTRING)
typedef mpl::list1<char const>                                              base_const_char_types;
typedef mpl::list2<char,unsigned char>                                      mutable_char_types;
#else
typedef mpl::list2<char const,wchar_t const>                                base_const_char_types;
typedef mpl::list3<char,unsigned char,wchar_t>                              mutable_char_types;
#endif
typedef mpl::transform<mutable_char_types,boost::add_const<mpl::_1> >::type const_char_types;
typedef mpl::joint_view<const_char_types,mutable_char_types>                char_types;
typedef mpl::list2<char,const char>                                         io_test_types;

//____________________________________________________________________________//

template<typename CharT>
struct string_literal
{
    typedef typename boost::remove_const<CharT>::type   mutable_char;

    string_literal( char const* orig, std::size_t orig_size )
    {
        std::copy( orig, orig + orig_size, buff );

        buff[orig_size] = 0;
    }

    mutable_char buff[100];
};

#define LITERAL( s ) (CharT*)string_literal<CharT>( s, sizeof( s ) ).buff
#define LOCAL_DEF( name, s )                                                \
string_literal<CharT> BOOST_JOIN( sl, __LINE__)(s, sizeof( s ));            \
utf::basic_cstring<CharT> name( (CharT*)(BOOST_JOIN( sl, __LINE__).buff) )  \
/**/

#define TEST_STRING test_string<CharT>( (CharT*)0 )

template<typename CharT>
CharT*
test_string( CharT* = 0 )
{
    static string_literal<CharT> l( "test_string", 11 );

    return l.buff;
}

//____________________________________________________________________________//

BOOST_TEST_CASE_TEMPLATE_FUNCTION( constructors_test, CharT )
{
    {
        utf::basic_cstring<CharT> bcs;
        BOOST_CHECK_EQUAL( bcs.size(), (unsigned)0 );
        BOOST_CHECK( bcs.is_empty() );
    }

    {
        utf::basic_cstring<CharT> bcs( utf::basic_cstring<CharT>::null_str() );
        BOOST_CHECK_EQUAL( bcs.size(), (unsigned)0 );
        BOOST_CHECK( bcs.is_empty() );
    }

    {
        utf::basic_cstring<CharT> bcs( 0 );
        BOOST_CHECK_EQUAL( bcs.size(), (unsigned)0 );
        BOOST_CHECK( bcs.is_empty() );
    }

    {
        typedef typename utf::basic_cstring<CharT>::traits_type traits;

        utf::basic_cstring<CharT> bcs( TEST_STRING );
        BOOST_CHECK_EQUAL( traits::compare( bcs.begin(), TEST_STRING, bcs.size() ), 0 );
        BOOST_CHECK_EQUAL( bcs.size(), traits::length( TEST_STRING ) );

        utf::basic_cstring<CharT> bcs1( bcs );
        BOOST_CHECK_EQUAL( traits::compare( bcs1.begin(), TEST_STRING, bcs1.size() ), 0 );
    }

    {
        typedef typename utf::basic_cstring<CharT>::traits_type traits;

        utf::basic_cstring<CharT> bcs( TEST_STRING, 4 );
        BOOST_CHECK_EQUAL( traits::compare( bcs.begin(), LITERAL( "test" ), bcs.size() ), 0 );
    }

    {
        typedef typename utf::basic_cstring<CharT>::traits_type traits;

        utf::basic_cstring<CharT> bcs( TEST_STRING, TEST_STRING + 6 );
        BOOST_CHECK_EQUAL( traits::compare( bcs.begin(), LITERAL( "test_s" ), bcs.size() ), 0 );
    }
}

//____________________________________________________________________________//

BOOST_TEST_CASE_TEMPLATE_FUNCTION( constructors_std_string_test, CharT )
{
    typedef typename utf::basic_cstring<CharT>::traits_type traits;

    {
        typename utf::basic_cstring<CharT>::std_string l( TEST_STRING );

        utf::basic_cstring<CharT> bcs( l );
        BOOST_CHECK_EQUAL( traits::compare( bcs.begin(), TEST_STRING, bcs.size() ), 0 );
    }

}

//____________________________________________________________________________//

void array_construction_test()
{
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x600))
    const_string bcs_array[] = { "str1", "str2" };

    BOOST_CHECK_EQUAL( const_string::traits_type::compare( bcs_array[0].begin(), "str1", bcs_array[0].size() ), 0 );
    BOOST_CHECK_EQUAL( const_string::traits_type::compare( bcs_array[1].begin(), "str2", bcs_array[1].size() ), 0 );

    const_string bcs( "abc" );
    BOOST_CHECK_EQUAL( const_string::traits_type::compare( bcs.begin(), "abc", bcs.size() ), 0 );
#endif
}

//____________________________________________________________________________//

BOOST_TEST_CASE_TEMPLATE_FUNCTION( data_access_test, CharT )
{
    typedef typename utf::basic_cstring<CharT>::traits_type traits_type;

    utf::basic_cstring<CharT> bcs1( TEST_STRING );
    BOOST_CHECK_EQUAL( traits_type::compare( bcs1.begin(), TEST_STRING, bcs1.size() ), 0 );
    BOOST_CHECK_EQUAL( traits_type::compare( bcs1.begin(), bcs1.begin(), bcs1.size() ), 0 );

    BOOST_CHECK_EQUAL( bcs1[0], 't' );
    BOOST_CHECK_EQUAL( bcs1[4], '_' );
    BOOST_CHECK_EQUAL( bcs1[bcs1.size()-1], 'g' );

    BOOST_CHECK_EQUAL( bcs1[0], bcs1.at( 0 ) );
    BOOST_CHECK_EQUAL( bcs1[2], bcs1.at( 5 ) );
    BOOST_CHECK_EQUAL( bcs1.at( bcs1.size() - 1 ), 'g' );
    BOOST_CHECK_EQUAL( bcs1.at( bcs1.size() ), 0 );
    BOOST_CHECK_EQUAL( bcs1.at( bcs1.size()+1 ), 0 );

    BOOST_CHECK_EQUAL( utf::first_char( bcs1 ), 't' );
    BOOST_CHECK_EQUAL( utf::last_char( bcs1 ) , 'g' );

    BOOST_CHECK_EQUAL( utf::first_char( utf::basic_cstring<CharT>() ), 0 );
    BOOST_CHECK_EQUAL( utf::last_char( utf::basic_cstring<CharT>() ), 0 );
}

//____________________________________________________________________________//

BOOST_TEST_CASE_TEMPLATE_FUNCTION( size_test, CharT )
{
    utf::basic_cstring<CharT> bcs1;

    BOOST_CHECK_EQUAL( bcs1.size(), (unsigned)0 );
    BOOST_CHECK( bcs1.is_empty() );

    bcs1 = TEST_STRING;
    BOOST_CHECK_EQUAL( bcs1.size(), (unsigned)11 );

    bcs1.clear();
    BOOST_CHECK_EQUAL( bcs1.size(), (unsigned)0 );
    BOOST_CHECK( bcs1.is_empty() );

    bcs1 = utf::basic_cstring<CharT>( TEST_STRING, 4 );
    BOOST_CHECK_EQUAL( bcs1.size(), (unsigned)4 );

    bcs1.resize( 5 );
    BOOST_CHECK_EQUAL( bcs1.size(), (unsigned)4 );

    bcs1.resize( 3 );
    BOOST_CHECK_EQUAL( bcs1.size(), (unsigned)3 );
}

//____________________________________________________________________________//

BOOST_TEST_CASE_TEMPLATE_FUNCTION( asignment_test, CharT )
{
    typedef typename utf::basic_cstring<CharT>::traits_type traits_type;

    utf::basic_cstring<CharT> bcs1;
    string_literal<CharT> l( "test", 4 );

    bcs1 = l.buff;
    BOOST_CHECK_EQUAL( traits_type::compare( bcs1.begin(), LITERAL( "test" ), bcs1.size() ), 0 );

    utf::basic_cstring<CharT> bcs2( TEST_STRING );
    bcs1 = bcs2;
    BOOST_CHECK_EQUAL( traits_type::compare( bcs1.begin(), TEST_STRING, bcs1.size() ), 0 );

    bcs1.assign( l.buff );