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Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>
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Peter Siegmund
2025-10-31 23:37:30 +01:00
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libs/wxWidgets-3.3.1/tests/strings/unicode.cpp Normal file
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///////////////////////////////////////////////////////////////////////////////
// Name: tests/strings/unicode.cpp
// Purpose: Unicode unit test
// Author: Vadim Zeitlin, Wlodzimierz ABX Skiba
// Created: 2004-04-28
// Copyright: (c) 2004 Vadim Zeitlin, Wlodzimierz Skiba
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "testprec.h"
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif // WX_PRECOMP
#include "wx/encconv.h"
// ----------------------------------------------------------------------------
// helper class holding the matching MB and WC strings
// ----------------------------------------------------------------------------
struct StringConversionData
{
// either str or wcs (but not both) may be null, this means that the conversion
// to it should fail
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 wxString::Format("#%lu: %s", (unsigned long)n, msg).ToStdString();
}
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( ConversionFixed );
CPPUNIT_TEST( ConversionWithNULs );
CPPUNIT_TEST( ConversionUTF7 );
CPPUNIT_TEST( ConversionUTF8 );
CPPUNIT_TEST( ConversionUTF16 );
CPPUNIT_TEST( ConversionUTF32 );
CPPUNIT_TEST( IsConvOk );
CPPUNIT_TEST( Iteration );
CPPUNIT_TEST_SUITE_END();
void ToFromAscii();
void ConstructorsWithConversion();
void ConversionFixed();
void ConversionWithNULs();
void ConversionUTF7();
void ConversionUTF8();
void ConversionUTF16();
void ConversionUTF32();
void IsConvOk();
void Iteration();
wxDECLARE_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 its 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()
{
const unsigned char utf8Buf[] = "Déjà";
const unsigned char utf8subBuf[] = "Déj";
const char* utf8 = reinterpret_cast<const char*>(utf8Buf);
const char* utf8sub = reinterpret_cast<const char*>(utf8subBuf);
wxString s1(utf8, wxConvUTF8);
const wchar_t wchar[] = {0x44,0xE9,0x6A,0xE0,0};
CPPUNIT_ASSERT_EQUAL( wchar, s1 );
wxString s2(wchar);
CPPUNIT_ASSERT_EQUAL( wchar, s2 );
CPPUNIT_ASSERT_EQUAL( wxString::FromUTF8(utf8), s2 );
wxString sub(utf8sub, wxConvUTF8); // "Dej" substring
wxString s3(utf8, wxConvUTF8, 4);
CPPUNIT_ASSERT_EQUAL( sub, s3 );
wxString s4(wchar, 3);
CPPUNIT_ASSERT_EQUAL( sub, s4 );
// conversion should stop with failure at pos 35
wxString s("\t[pl]open.format.Sformatuj dyskietk\xea=gfloppy %f", wxConvUTF8);
CPPUNIT_ASSERT( s.empty() );
// test using Unicode strings together with char* strings (this must work
// in ANSI mode as well, of course):
wxString s5("ascii");
CPPUNIT_ASSERT_EQUAL( "ascii", s5 );
s5 += " value";
CPPUNIT_ASSERT( strcmp(s5.mb_str(), "ascii value") == 0 );
CPPUNIT_ASSERT_EQUAL( "ascii value", s5 );
CPPUNIT_ASSERT( s5 != "SomethingElse" );
}
void UnicodeTestCase::ConversionFixed()
{
size_t len;
wxConvLibc.cWC2MB(L"", 0, &len);
CPPUNIT_ASSERT_EQUAL( 0, len );
// check that when we convert a fixed number of characters we obtain the
// expected return value
CPPUNIT_ASSERT_EQUAL( 0, wxConvLibc.ToWChar(nullptr, 0, "", 0) );
CPPUNIT_ASSERT_EQUAL( 1, wxConvLibc.ToWChar(nullptr, 0, "x", 1) );
CPPUNIT_ASSERT_EQUAL( 2, wxConvLibc.ToWChar(nullptr, 0, "x", 2) );
CPPUNIT_ASSERT_EQUAL( 2, wxConvLibc.ToWChar(nullptr, 0, "xy", 2) );
}
void UnicodeTestCase::ConversionWithNULs()
{
static const size_t lenNulString = 10;
wxString szTheString(L"The\0String", lenNulString);
wxCharBuffer theBuffer = szTheString.mb_str(wxConvLibc);
CPPUNIT_ASSERT( memcmp(theBuffer.data(), "The\0String",
lenNulString + 1) == 0 );
wxString szTheString2("The\0String", wxConvLocal, lenNulString);
CPPUNIT_ASSERT_EQUAL( lenNulString, szTheString2.length() );
CPPUNIT_ASSERT( wxTmemcmp(szTheString2.c_str(), L"The\0String",
lenNulString) == 0 );
const char *null4buff = "\0\0\0\0";
wxString null4str(null4buff, 4);
CPPUNIT_ASSERT_EQUAL( 4, null4str.length() );
}
void UnicodeTestCase::ConversionUTF7()
{
static const StringConversionData utf7data[] =
{
// normal fragments
StringConversionData("+AKM-", L"\xa3"),
StringConversionData("+AOk-t+AOk-", L"\xe9t\xe9"),
// this one is an alternative valid encoding of the same string
StringConversionData("+AOk-t+AOk", L"\xe9t\xe9",
StringConversionData::ONLY_MB2WC),
// some special cases
StringConversionData("+-", L"+"),
StringConversionData("+--", L"+-"),
// the following are invalid UTF-7 sequences
StringConversionData("\xa3", nullptr),
StringConversionData("+", nullptr),
StringConversionData("+~", nullptr),
StringConversionData("a+", nullptr),
};
for ( size_t n = 0; n < WXSIZEOF(utf7data); n++ )
{
const StringConversionData& d = utf7data[n];
// converting to/from UTF-7 using iconv() currently doesn't work
// because of several problems:
// - GetMBNulLen() doesn't return correct result (iconv converts L'\0'
// to an incomplete and anyhow nonsensical "+AA" string)
// - iconv refuses to convert "+-" (although it converts "+-\n" just
// fine, go figure)
//
// I have no idea how to fix this so just disable the test for now
#ifdef __WINDOWS__
wxCSConv conv("utf-7");
d.Test(n, conv);
#endif
d.Test(n, wxConvUTF7);
}
}
void UnicodeTestCase::ConversionUTF8()
{
static const StringConversionData utf8data[] =
{
#ifdef wxMUST_USE_U_ESCAPE
StringConversionData("\xc2\xa3", L"\u00a3"),
#else
StringConversionData("£", L"£"),
#endif
};
wxCSConv conv(wxT("utf-8"));
for ( size_t n = 0; n < WXSIZEOF(utf8data); n++ )
{
const StringConversionData& d = utf8data[n];
d.Test(n, conv);
d.Test(n, wxConvUTF8);
}
static const char* const u25a6 = "\xe2\x96\xa6";
wxMBConvUTF8 c(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL);
CPPUNIT_ASSERT_EQUAL( 2, c.ToWChar(nullptr, 0, u25a6, wxNO_LEN) );
CPPUNIT_ASSERT_EQUAL( 0, c.ToWChar(nullptr, 0, u25a6, 0) );
CPPUNIT_ASSERT_EQUAL( 1, c.ToWChar(nullptr, 0, u25a6, 3) );
CPPUNIT_ASSERT_EQUAL( 2, c.ToWChar(nullptr, 0, u25a6, 4) );
// Verify that converting a string with embedded NULs works.
CPPUNIT_ASSERT_EQUAL( 5, wxString::FromUTF8("abc\0\x32", 5).length() );
// Verify that converting a string containing invalid UTF-8 does not work,
// even if it happens after an embedded NUL.
CPPUNIT_ASSERT( wxString::FromUTF8("abc\xff").empty() );
CPPUNIT_ASSERT( wxString::FromUTF8("abc\0\xff", 5).empty() );
}
void UnicodeTestCase::ConversionUTF16()
{
static const StringConversionData utf16data[] =
{
#ifdef wxMUST_USE_U_ESCAPE
StringConversionData(
"\x04\x1f\x04\x40\x04\x38\x04\x32\x04\x35\x04\x42\0\0",
L"\u041f\u0440\u0438\u0432\u0435\u0442"),
#else
StringConversionData(
"\x04\x1f\x04\x40\x04\x38\x04\x32\x04\x35\x04\x42\0\0",
L"Привет"),
#endif
};
wxCSConv conv(wxFONTENCODING_UTF16BE);
for ( size_t n = 0; n < WXSIZEOF(utf16data); n++ )
{
const StringConversionData& d = utf16data[n];
d.Test(n, conv);
}
// special case: this string has consecutive NULs inside it which don't
// terminate the string, this exposed a bug in our conversion code which
// got confused in this case
size_t len;
conv.cMB2WC("\x01\0\0B\0C" /* A macron BC */, 6, &len);
CPPUNIT_ASSERT_EQUAL( 3, len );
// When using UTF-16 internally (i.e. MSW), we don't have any surrogate
// support, so the length of the string below is 2, not 1.
#if SIZEOF_WCHAR_T == 4
// Another one: verify that the length of the resulting string is computed
// correctly when there is a surrogate in the input.
wxMBConvUTF16BE().cMB2WC("\xd8\x03\xdc\x01\0" /* OLD TURKIC LETTER YENISEI A */, wxNO_LEN, &len);
CPPUNIT_ASSERT_EQUAL( 1, len );
#endif // UTF-32 internal representation
#if SIZEOF_WCHAR_T == 2
// Verify that the length of UTF-32 string is correct even when converting
// to it from a longer UTF-16 string with surrogates.
// Construct CAT FACE U+1F431 without using \U which is not supported by
// ancient compilers and without using \u with surrogates which is
// (correctly) flagged as an error by the newer ones.
wchar_t ws[2];
ws[0] = 0xd83d;
ws[1] = 0xdc31;
CPPUNIT_ASSERT_EQUAL( 4, wxMBConvUTF32BE().FromWChar(nullptr, 0, ws, 2) );
#endif // UTF-16 internal representation
}
void UnicodeTestCase::ConversionUTF32()
{
static const StringConversionData utf32data[] =
{
#ifdef wxMUST_USE_U_ESCAPE
StringConversionData(
"\0\0\x04\x1f\0\0\x04\x40\0\0\x04\x38\0\0\x04\x32\0\0\x04\x35\0\0\x04\x42\0\0\0\0",
L"\u041f\u0440\u0438\u0432\u0435\u0442"),
#else
StringConversionData(
"\0\0\x04\x1f\0\0\x04\x40\0\0\x04\x38\0\0\x04\x32\0\0\x04\x35\0\0\x04\x42\0\0\0\0",
L"Привет"),
#endif
};
wxCSConv conv(wxFONTENCODING_UTF32BE);
for ( size_t n = 0; n < WXSIZEOF(utf32data); n++ )
{
const StringConversionData& d = utf32data[n];
d.Test(n, conv);
}
size_t len;
conv.cMB2WC("\0\0\x01\0\0\0\0B\0\0\0C" /* A macron BC */, 12, &len);
CPPUNIT_ASSERT_EQUAL( 3, len );
}
void UnicodeTestCase::IsConvOk()
{
CPPUNIT_ASSERT( wxCSConv(wxFONTENCODING_SYSTEM).IsOk() );
CPPUNIT_ASSERT( wxCSConv("US-ASCII").IsOk() );
CPPUNIT_ASSERT( wxCSConv("UTF-8").IsOk() );
CPPUNIT_ASSERT( !wxCSConv("NoSuchConversion").IsOk() );
#ifdef __WINDOWS__
CPPUNIT_ASSERT( wxCSConv("WINDOWS-437").IsOk() );
#endif
}
void UnicodeTestCase::Iteration()
{
static const char *textUTF8 = "čeština";// "czech" in Czech
static const wchar_t textUTF16[] = {0x10D, 0x65, 0x161, 0x74, 0x69, 0x6E, 0x61, 0};
wxString text(wxString::FromUTF8(textUTF8));
CPPUNIT_ASSERT( wxStrcmp(text.wc_str(), textUTF16) == 0 );
// verify the string was decoded correctly:
{
size_t idx = 0;
for ( auto c : text )
{
CPPUNIT_ASSERT( c == textUTF16[idx++] );
}
}
// overwrite the string with something that is shorter in UTF-8:
{
for ( auto c : text )
c = 'x';
}
// restore the original text now:
{
wxString::iterator end1 = text.end();
wxString::const_iterator end2 = text.end();
size_t idx = 0;
for ( auto c : text )
{
c = textUTF16[idx++];
CPPUNIT_ASSERT( end1 == text.end() );
CPPUNIT_ASSERT( end2 == text.end() );
}
CPPUNIT_ASSERT( end1 == text.end() );
CPPUNIT_ASSERT( end2 == text.end() );
}
// and verify it again:
{
size_t idx = 0;
for ( auto c : text )
{
CPPUNIT_ASSERT( c == textUTF16[idx++] );
}
}
}