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[wxWidgets.git] / tests / strings / unicode.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        tests/strings/unicode.cpp
// Purpose:     Unicode unit test
// Author:      Vadim Zeitlin, Wlodzimierz ABX Skiba
// Created:     2004-04-28
// RCS-ID:      $Id$
// Copyright:   (c) 2004 Vadim Zeitlin, Wlodzimierz Skiba
///////////////////////////////////////////////////////////////////////////////

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#include "testprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#ifndef WX_PRECOMP
    #include "wx/wx.h"
#endif // WX_PRECOMP

// helper class holding the matching MB and WC strings
//
// either str or wcs (but not both) may be NULL, this means that the conversion
// to it should fail
struct StringConversionData
{
    StringConversionData(const char *str_, const wchar_t *wcs_, int flags_ = 0)
        : str(str_), wcs(wcs_), flags(flags_)
    {
    }

    const char * const str;
    const wchar_t * const wcs;

    enum
    {
        TEST_BOTH  = 0, // test both str -> wcs and wcs -> str
        ONLY_MB2WC = 1  // only test str -> wcs conversion
    };

    const int flags;

    // test that the conversion between str and wcs (subject to flags) succeeds
    //
    // the first argument is the index in the test array and is used solely for
    // diagnostics
    void Test(size_t n, wxMBConv& conv) const
    {
        if ( str )
        {
            wxWCharBuffer wbuf = conv.cMB2WC(str);

            if ( wcs )
            {
                CPPUNIT_ASSERT_MESSAGE
                (
                    Message(n, "MB2WC failed"),
                    wbuf.data()
                );

                CPPUNIT_ASSERT_MESSAGE
                (
                    Message(n, "MB2WC", wbuf, wcs),
                    wxStrcmp(wbuf, wcs) == 0
                );
            }
            else // conversion is supposed to fail
            {
                CPPUNIT_ASSERT_MESSAGE
                (
                    Message(n, "MB2WC succeeded"),
                    !wbuf.data()
                );
            }
        }

        if ( wcs && !(flags & ONLY_MB2WC) )
        {
            wxCharBuffer buf = conv.cWC2MB(wcs);

            if ( str )
            {
                CPPUNIT_ASSERT_MESSAGE
                (
                    Message(n, "WC2MB failed"),
                    buf.data()
                );

                CPPUNIT_ASSERT_MESSAGE
                (
                    Message(n, "WC2MB", buf, str),
                    strcmp(buf, str) == 0
                );
            }
            else
            {
                CPPUNIT_ASSERT_MESSAGE
                (
                    Message(n, "WC2MB succeeded"),
                    !buf.data()
                );
            }
        }
    }

private:
    static std::string
    Message(size_t n, const wxString& msg)
    {
        return std::string(wxString::Format("#%lu: %s", (unsigned long)n, msg));
    }

    template <typename T>
    static std::string
    Message(size_t n,
            const char *func,
            const wxCharTypeBuffer<T>& actual,
            const T *expected)
    {
        return Message(n,
                       wxString::Format("%s returned \"%s\", expected \"%s\"",
                                        func, actual.data(), expected));
    }
};

// ----------------------------------------------------------------------------
// test class
// ----------------------------------------------------------------------------

class UnicodeTestCase : public CppUnit::TestCase
{
public:
    UnicodeTestCase();

private:
    CPPUNIT_TEST_SUITE( UnicodeTestCase );
        CPPUNIT_TEST( ToFromAscii );
        CPPUNIT_TEST( ConstructorsWithConversion );
        CPPUNIT_TEST( ConversionEmpty );
        CPPUNIT_TEST( ConversionWithNULs );
        CPPUNIT_TEST( ConversionUTF7 );
        CPPUNIT_TEST( ConversionUTF8 );
        CPPUNIT_TEST( ConversionUTF16 );
        CPPUNIT_TEST( ConversionUTF32 );
        CPPUNIT_TEST( IsConvOk );
#if wxUSE_UNICODE
        CPPUNIT_TEST( Iteration );
#endif
    CPPUNIT_TEST_SUITE_END();

    void ToFromAscii();
    void ConstructorsWithConversion();
    void ConversionEmpty();
    void ConversionWithNULs();
    void ConversionUTF7();
    void ConversionUTF8();
    void ConversionUTF16();
    void ConversionUTF32();
    void IsConvOk();
#if wxUSE_UNICODE
    void Iteration();
#endif

    DECLARE_NO_COPY_CLASS(UnicodeTestCase)
};

// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( UnicodeTestCase );

// also include in it's own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( UnicodeTestCase, "UnicodeTestCase" );

UnicodeTestCase::UnicodeTestCase()
{
}

void UnicodeTestCase::ToFromAscii()
{

#define TEST_TO_FROM_ASCII(txt)                              \
    {                                                        \
        static const char *msg = txt;                        \
        wxString s = wxString::FromAscii(msg);               \
        CPPUNIT_ASSERT( strcmp( s.ToAscii() , msg ) == 0 );  \
    }

    TEST_TO_FROM_ASCII( "Hello, world!" );
    TEST_TO_FROM_ASCII( "additional \" special \t test \\ component \n :-)" );
}

void UnicodeTestCase::ConstructorsWithConversion()
{