X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7a828c7ffb2e77f6e8c65b3d72f7364826131d1f..b5fe7ca67bf3121959a0b5a59afd00c1708f2f03:/tests/strings/vsnprintf.cpp diff --git a/tests/strings/vsnprintf.cpp b/tests/strings/vsnprintf.cpp index 9486ee180d..8353178303 100644 --- a/tests/strings/vsnprintf.cpp +++ b/tests/strings/vsnprintf.cpp @@ -19,19 +19,95 @@ #pragma hdrstop #endif +#include "wx/crt.h" + +#if wxUSE_WXVSNPRINTF + #ifndef WX_PRECOMP #include "wx/wx.h" #include "wx/wxchar.h" #endif // WX_PRECOMP -// if 1 then instead of the hard-coded expected strings, the obtained results will be -// compared to the output of the system's vsnprintf() implementation. -// NOTE: this requires a vsnprintf() implementation which supports positional parameters. -#define USE_LIBC 0 +// NOTE: for more info about the specification of wxVsnprintf() behaviour you can +// refer to the following page of the GNU libc manual: +// http://www.gnu.org/software/libc/manual/html_node/Formatted-Output.html + -// this makes it possible to write all tests without repeating a lot of times wxT() macro -#define CMP(x, y, z) Compare(wxT(x), wxT(y), z) + +// ---------------------------------------------------------------------------- +// global utilities for testing +// ---------------------------------------------------------------------------- + +#define MAX_TEST_LEN 1024 + +// temporary buffers +static wxChar buf[MAX_TEST_LEN]; +int r; + +// these macros makes it possible to write all tests without repeating a lot +// of times the wxT() macro +// NOTE: you should use expected strings with these macros which do not exceed +// MAX_TEST_LEN as these macro do check if the return value is == (int)wxStrlen(buf) + +#define ASSERT_STR_EQUAL( a, b ) \ + CPPUNIT_ASSERT_EQUAL( wxString(a), wxString(b) ); + +#define CMP6(expected, fmt, y, z, w, t) \ + r=wxSnprintf(buf, MAX_TEST_LEN, wxT(fmt), y, z, w, t); \ + CPPUNIT_ASSERT( r == (int)wxStrlen(buf) ); \ + ASSERT_STR_EQUAL( wxT(expected), buf ); + +#define CMP5(expected, fmt, y, z, w) \ + r=wxSnprintf(buf, MAX_TEST_LEN, wxT(fmt), y, z, w); \ + CPPUNIT_ASSERT( r == (int)wxStrlen(buf) ); \ + ASSERT_STR_EQUAL( wxT(expected), buf ); + +#define CMP4(expected, fmt, y, z) \ + r=wxSnprintf(buf, MAX_TEST_LEN, wxT(fmt), y, z); \ + CPPUNIT_ASSERT( r == (int)wxStrlen(buf) ); \ + ASSERT_STR_EQUAL( wxT(expected), buf ); + +#define CMP3(expected, fmt, y) \ + r=wxSnprintf(buf, MAX_TEST_LEN, wxT(fmt), y); \ + CPPUNIT_ASSERT( r == (int)wxStrlen(buf) ); \ + ASSERT_STR_EQUAL( wxT(expected), buf ); + +#define CMP2(expected, fmt) \ + r=wxSnprintf(buf, MAX_TEST_LEN, wxT(fmt)); \ + CPPUNIT_ASSERT( r == (int)wxStrlen(buf) ); \ + ASSERT_STR_EQUAL( wxT(expected), buf ); + +// NOTE: this macro is used also with too-small buffers (see Miscellaneous()) +// test function, thus the return value can be > size and thus we +// cannot check if r == (int)wxStrlen(buf) +#define CMPTOSIZE(buffer, size, failuremsg, expected, fmt, x, y, z, w) \ + r=wxSnprintf(buffer, size, wxT(fmt), x, y, z, w); \ + CPPUNIT_ASSERT( r > 0 ); \ + CPPUNIT_ASSERT_EQUAL_MESSAGE( \ + failuremsg, \ + wxString(wxT(expected)).Left(size - 1), \ + wxString(buffer)) + +// this is the same as wxSnprintf() but it passes the format string to +// wxVsnprintf() without using WX_ATTRIBUTE_PRINTF and thus suppresses the gcc +// checks (and resulting warnings) for the format string +// +// use with extreme care and only when you're really sure the warnings must be +// suppressed! +template +static int +wxUnsafeSnprintf(T *buf, size_t len, const wxChar *fmt, ...) +{ + va_list args; + va_start(args, fmt); + + int rc = wxVsnprintf(buf, len, fmt, args); + + va_end(args); + + return rc; +} // ---------------------------------------------------------------------------- // test class @@ -44,25 +120,60 @@ public: private: CPPUNIT_TEST_SUITE( VsnprintfTestCase ); + CPPUNIT_TEST( C ); + CPPUNIT_TEST( D ); + CPPUNIT_TEST( X ); + CPPUNIT_TEST( O ); + CPPUNIT_TEST( P ); + CPPUNIT_TEST( N ); CPPUNIT_TEST( E ); CPPUNIT_TEST( F ); CPPUNIT_TEST( G ); CPPUNIT_TEST( S ); + CPPUNIT_TEST( Asterisk ); + CPPUNIT_TEST( Percent ); +#ifdef wxLongLong_t + CPPUNIT_TEST( LongLong ); +#endif CPPUNIT_TEST( BigToSmallBuffer ); +#if wxUSE_WXVSNPRINTF + CPPUNIT_TEST( WrongFormatStrings ); +#endif // wxUSE_WXVSNPRINTF + CPPUNIT_TEST( Miscellaneous ); CPPUNIT_TEST_SUITE_END(); + void C(); + void D(); + void X(); + void O(); + void P(); + void N(); void E(); void F(); void G(); void S(); + void Asterisk(); + void Percent(); +#ifdef wxLongLong_t + void LongLong(); +#endif + void Unicode(); + template + void DoBigToSmallBuffer(T *buffer, int size); void BigToSmallBuffer(); - // some helpers - void Misc(wxChar *buffer, int size); - void Compare(const wxChar *expected, const wxChar *format, ...) const; - void CompareV(wxChar *buf, wxChar *buf2, size_t len, const wxChar *format, va_list argptr) const; +#if wxUSE_WXVSNPRINTF + void WrongFormatStrings(); +#endif // wxUSE_WXVSNPRINTF + + // compares the expectedString and the result of wxVsnprintf() char by char + // for all its lenght (not only for first expectedLen chars) and also + // checks the return value + void DoMisc(int expectedLen, const wxString& expectedString, + size_t max, const wxChar *format, ...); + void Miscellaneous(); DECLARE_NO_COPY_CLASS(VsnprintfTestCase) }; @@ -75,147 +186,405 @@ CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( VsnprintfTestCase, "VsnprintfTestCase" ); VsnprintfTestCase::VsnprintfTestCase() { + // this call is required to avoid check failures when running on machines + // with a locale where the decimal point is not '.' + wxSetlocale(LC_NUMERIC, "English"); } -void VsnprintfTestCase::CompareV(wxChar *buf, wxChar *buf2, size_t len, - const wxChar *format, va_list argptr) const +void VsnprintfTestCase::C() { -#if USE_LIBC - va_list argptr2; - wxVaCopy(argptr2, argptr); -#endif + CMP5("hi!", "%c%c%c", wxT('h'), wxT('i'), wxT('!')); - wxVsnprintf( buf, len, format, argptr ); - va_end(argptr); + // NOTE: + // the NULL characters _can_ be passed to %c to e.g. create strings + // with embedded NULs (because strings are not always supposed to be + // NUL-terminated). -#if USE_LIBC - vsnprintf( buf2, len, format, argptr2 ); // use system's implementation - va_end(argptr2); -#else - wxUnusedVar(buf2); -#endif + DoMisc(14, wxT("Hello \0 World!"), 16, wxT("Hello %c World!"), wxT('\0')); } -void VsnprintfTestCase::Compare(const wxChar *expected, const wxChar *format, ...) const +void VsnprintfTestCase::D() { - static wxChar buf[1024], - buf2[1024]; + CMP3("+123456", "%+d", 123456); + CMP3("-123456", "%d", -123456); + CMP3(" 123456", "% d", 123456); + CMP3(" 123456", "%10d", 123456); + CMP3("0000123456", "%010d", 123456); + CMP3("-123456 ", "%-10d", -123456); +} - va_list argptr; - va_start( argptr, format ); - CompareV( buf, buf2, 1024, format, argptr ); - va_end(argptr); +void VsnprintfTestCase::X() +{ + CMP3("ABCD", "%X", 0xABCD); + CMP3("0XABCD", "%#X", 0xABCD); + CMP3("0xabcd", "%#x", 0xABCD); +} -#if USE_LIBC - CPPUNIT_ASSERT_STR_EQUAL( buf, buf2 ); -#else - CPPUNIT_ASSERT_STR_EQUAL( buf, expected ); +void VsnprintfTestCase::O() +{ + CMP3("1234567", "%o", 01234567); + CMP3("01234567", "%#o", 01234567); +} + +void VsnprintfTestCase::P() +{ + // WARNING: printing of pointers is not fully standard. + // GNU prints them as %#x except for NULL pointers which are + // printed as '(nil)'. + // MSVC always print them as %8X on 32 bit systems and as %16X + // on 64 bit systems +#ifdef __VISUALC__ + #if SIZEOF_VOID_P == 4 + CMP3("00ABCDEF", "%p", (void*)0xABCDEF); + CMP3("00000000", "%p", (void*)NULL); + #elif SIZEOF_VOID_P == 8 + CMP3("0000ABCDEFABCDEF", "%p", (void*)0xABCDEFABCDEF); + CMP3("0000000000000000", "%p", (void*)NULL); + #endif +#elif defined(__GNUG__) + CMP3("0xabcdef", "%p", (void*)0xABCDEF); + CMP3("(nil)", "%p", (void*)NULL); #endif } -void VsnprintfTestCase::E() +void VsnprintfTestCase::N() { - CMP("2.342000e+02", "%e",2.342E+02); - CMP("-2.3420e-02", "%10.4e",-2.342E-02); - CMP("-2.3420e-02", "%11.4e",-2.342E-02); - CMP(" -2.3420e-02", "%15.4e",-2.342E-02); + int nchar; + + wxSnprintf(buf, MAX_TEST_LEN, _T("%d %s%n\n"), 3, _T("bears"), &nchar); + CPPUNIT_ASSERT_EQUAL( 7, nchar ); +} - CMP("-0.02342", "%G",-2.342E-02); - CMP("3.1415E-06", "%G",3.1415e-6); - CMP("00003.141500e+03", "%016e", 3141.5); - CMP(" 3.141500e+03", "%16e", 3141.5); - CMP("3.141500e+03 ", "%-16e", 3141.5); - CMP("03.142e+03", "%010.3e", 3141.5); +void VsnprintfTestCase::E() +{ + // NB: there are no standards about the minimum exponent width + // (and the width of the %e conversion specifier refers to the + // mantissa, not to the exponent). + // Since newer MSVC versions use 3 digits as minimum exponent + // width while GNU libc uses 2 digits as minimum width, here we + // workaround this problem using for the exponent values with at + // least three digits. + // Some examples: + // printf("%e",2.342E+02); + // -> under MSVC7.1 prints: 2.342000e+002 + // -> under GNU libc 2.4 prints: 2.342000e+02 + CMP3("2.342000e+112", "%e",2.342E+112); + CMP3("-2.3420e-112", "%10.4e",-2.342E-112); + CMP3("-2.3420e-112", "%11.4e",-2.342E-112); + CMP3(" -2.3420e-112", "%15.4e",-2.342E-112); + + CMP3("-0.02342", "%G",-2.342E-02); + CMP3("3.1415E-116", "%G",3.1415e-116); + CMP3("0003.141500e+103", "%016e", 3141.5e100); + CMP3(" 3.141500e+103", "%16e", 3141.5e100); + CMP3("3.141500e+103 ", "%-16e", 3141.5e100); + CMP3("3.142e+103", "%010.3e", 3141.5e100); } void VsnprintfTestCase::F() { - CMP("3.300000", "%5f", 3.3); - CMP("3.000000", "%5f", 3.0); - CMP("0.000100", "%5f", .999999E-4); - CMP("0.000990", "%5f", .99E-3); - CMP("3333.000000", "%5f", 3333.0); + CMP3("3.300000", "%5f", 3.3); + CMP3("3.000000", "%5f", 3.0); + CMP3("0.000100", "%5f", .999999E-4); + CMP3("0.000990", "%5f", .99E-3); + CMP3("3333.000000", "%5f", 3333.0); } void VsnprintfTestCase::G() { - CMP(" 3.3", "%5g", 3.3); - CMP(" 3", "%5g", 3.0); - CMP("9.99999e-05", "%5g", .999999E-4); - CMP("0.00099", "%5g", .99E-3); - CMP(" 3333", "%5g", 3333.0); - CMP(" 0.01", "%5g", 0.01); - - CMP(" 3", "%5.g", 3.3); - CMP(" 3", "%5.g", 3.0); - CMP("1e-04", "%5.g", .999999E-4); - CMP("0.0001", "%5.g", 1.0E-4); - CMP("0.001", "%5.g", .99E-3); - CMP("3e+03", "%5.g", 3333.0); - CMP(" 0.01", "%5.g", 0.01); - - CMP(" 3.3", "%5.2g", 3.3); - CMP(" 3", "%5.2g", 3.0); - CMP("1e-04", "%5.2g", .999999E-4); - CMP("0.00099", "%5.2g", .99E-3); - CMP("3.3e+03", "%5.2g", 3333.0); - CMP(" 0.01", "%5.2g", 0.01); + // NOTE: the same about E() testcase applies here... + + CMP3(" 3.3", "%5g", 3.3); + CMP3(" 3", "%5g", 3.0); + CMP3("9.99999e-115", "%5g", .999999E-114); + CMP3("0.00099", "%5g", .99E-3); + CMP3(" 3333", "%5g", 3333.0); + CMP3(" 0.01", "%5g", 0.01); + + CMP3(" 3", "%5.g", 3.3); + CMP3(" 3", "%5.g", 3.0); + CMP3("1e-114", "%5.g", .999999E-114); + CMP3("0.0001", "%5.g", 1.0E-4); + CMP3("0.001", "%5.g", .99E-3); + CMP3("3e+103", "%5.g", 3333.0E100); + CMP3(" 0.01", "%5.g", 0.01); + + CMP3(" 3.3", "%5.2g", 3.3); + CMP3(" 3", "%5.2g", 3.0); + CMP3("1e-114", "%5.2g", .999999E-114); + CMP3("0.00099", "%5.2g", .99E-3); + CMP3("3.3e+103", "%5.2g", 3333.0E100); + CMP3(" 0.01", "%5.2g", 0.01); } void VsnprintfTestCase::S() { - CMP(" abc", "%5s", wxT("abc")); - CMP(" a", "%5s", wxT("a")); - CMP("abcdefghi", "%5s", wxT("abcdefghi")); - CMP("abc ", "%-5s", wxT("abc")); - CMP("abcdefghi", "%-5s", wxT("abcdefghi")); + CMP3(" abc", "%5s", wxT("abc")); + CMP3(" a", "%5s", wxT("a")); + CMP3("abcdefghi", "%5s", wxT("abcdefghi")); + CMP3("abc ", "%-5s", wxT("abc")); + CMP3("abcdefghi", "%-5s", wxT("abcdefghi")); + + CMP3("abcde", "%.5s", wxT("abcdefghi")); + + // do the same tests but with Unicode characters: +#if wxUSE_UNICODE + + // Unicode code points from U+03B1 to U+03B9 are the greek letters alpha-iota; + // UTF8 encoding of such code points is 0xCEB1 to 0xCEB9 + +#define ALPHA "\xCE\xB1" + // alpha +#define ABC "\xCE\xB1\xCE\xB2\xCE\xB3" + // alpha+beta+gamma +#define ABCDE "\xCE\xB1\xCE\xB2\xCE\xB3\xCE\xB4\xCE\xB5" + // alpha+beta+gamma+delta+epsilon +#define ABCDEFGHI "\xCE\xB1\xCE\xB2\xCE\xB3\xCE\xB4\xCE\xB5\xCE\xB6\xCE\xB7\xCE\xB8\xCE\xB9" + // alpha+beta+gamma+delta+epsilon+zeta+eta+theta+iota + +#define ALPHA_w wxT(ALPHA) +#define ABC_w wxT(ABC) +#define ABCDE_w wxT(ABCDE) +#define ABCDEFGHI_w wxT(ABCDEFGHI) + + // CMP3 uses wxT() on the first argument so we need to be careful + // when using string concatenation that all parts of the string after + // the first explicitely use wxT(): + CMP3(" " ABC_w, "%5s", ABC); + CMP3(" " ALPHA_w, "%5s", ALPHA); + CMP3(ABCDEFGHI, "%5s", ABCDEFGHI); + CMP3(ABC L" ", "%-5s", ABC); + CMP3(ABCDEFGHI, "%-5s", ABCDEFGHI); + CMP3(ABCDE, "%.5s", ABCDEFGHI); +#endif - CMP("abcde", "%.5s", wxT("abcdefghi")); + // test a string which has a NULL character after "ab"; + // obviously it should be handled exactly like just as "ab" + CMP3(" ab", "%5s", wxT("ab\0cdefghi")); } -void VsnprintfTestCase::Misc(wxChar *buffer, int size) +void VsnprintfTestCase::Asterisk() { - int ret; + CMP5(" 0.1", "%*.*f", 10, 1, 0.123); + CMP5(" 0.1230", "%*.*f", 10, 4, 0.123); + CMP5("0.1", "%*.*f", 3, 1, 0.123); + + CMP4("%0.002", "%%%.*f", 3, 0.0023456789); + + CMP4(" a", "%*c", 8, 'a'); + CMP4(" four", "%*s", 8, "four"); + CMP6(" four four", "%*s %*s", 8, "four", 6, "four"); +} + +void VsnprintfTestCase::Percent() +{ + // some tests without any argument passed through ... + CMP2("%", "%%"); + CMP2("%%%", "%%%%%%"); + + CMP3("% abc", "%%%5s", wxT("abc")); + CMP3("% abc%", "%%%5s%%", wxT("abc")); + + // do not test odd number of '%' symbols as different implementations + // of snprintf() give different outputs as this situation is not considered + // by any standard (in fact, GCC will also warn you about a spurious % if + // you write %%% as argument of some *printf function !) + // Compare(wxT("%"), wxT("%%%")); +} + +#ifdef wxLongLong_t +void VsnprintfTestCase::LongLong() +{ + CMP3("123456789", "%lld", (wxLongLong_t)123456789); + CMP3("-123456789", "%lld", (wxLongLong_t)-123456789); + + CMP3("123456789", "%llu", (wxULongLong_t)123456789); + +#ifdef __WXMSW__ + CMP3("123456789", "%I64d", (wxLongLong_t)123456789); + CMP3("123456789abcdef", "%I64x", wxLL(0x123456789abcdef)); +#endif +} +#endif + +// this test is only for our own implementation, the system implementation +// doesn't always give errors for invalid format strings (e.g. glibc doesn't) +// and as it's not required too (the behaviour is "undefined" according to the +// spec), there is really no sense in testing for it +#if wxUSE_WXVSNPRINTF + +void VsnprintfTestCase::WrongFormatStrings() +{ + // test how wxVsnprintf() behaves with wrong format string: + +#if 0 + // NB: the next 2 tests currently return an error but it would be nice + // if they didn't (see ticket #9367) + + // two positionals with the same index: + r = wxSnprintf(buf, MAX_TEST_LEN, wxT("%1$s %1$s"), "hello"); + CPPUNIT_ASSERT(r != -1); + + // three positionals with the same index mixed with other pos args: + r = wxSnprintf(buf, MAX_TEST_LEN, wxT("%4$d %2$f %1$s %2$s %3$d"), "hello", "world", 3, 4); + CPPUNIT_ASSERT(r != -1); +#endif + + // a missing positional arg: this should result in an error but not all + // implementations detect it (e.g. glibc doesn't) + r = wxSnprintf(buf, MAX_TEST_LEN, wxT("%1$d %3$d"), 1, 2, 3); + CPPUNIT_ASSERT_EQUAL(-1, r); + + // positional and non-positionals in the same format string: + r = wxSnprintf(buf, MAX_TEST_LEN, wxT("%1$d %d %3$d"), 1, 2, 3); + CPPUNIT_ASSERT_EQUAL(-1, r); +} + +#endif // wxUSE_WXVSNPRINTF + +// BigToSmallBuffer() test case helper: +template +void VsnprintfTestCase::DoBigToSmallBuffer(T *buffer, int size) +{ + // Remember that wx*printf could be mapped either to system + // implementation or to wx implementation. + // In the first case, when the output buffer is too small, the returned + // value can be the number of characters required for the output buffer + // (conforming to ISO C99; implemented in e.g. GNU libc >= 2.1), or + // just a negative number, usually -1; (this is how e.g. MSVC's + // *printf() behaves). Luckily, in all implementations, when the + // output buffer is too small, it's nonetheless filled up to its max size. + // + // Note that in the second case (i.e. when we're using our own implementation), + // wxVsnprintf() will return the number of characters written in the standard + // output or + // -1 if there was an error in the format string + // maxSize+1 if the output buffer is too small + + wxString errStr; + errStr << "The size of the buffer was " << size; + std::string errMsg(errStr.mb_str()); // test without positionals - ret = wxSnprintf(buffer, size, - wxT("\n\n%s %e %le %i %li - test - %d %i %% -%*.*f-\n\n"), wxT("aa"), 123.123, - 123123123123123123123123.123123123123, 456, (long int)33333333, 789, 999, 10, 1, 0.123); - if (ret >= 0) - { - CPPUNIT_ASSERT_STR_EQUAL( - wxT("\n\naa 1.231230e+02 1.231231e+23 456 33333333 - test - 789 999 %% - 0.1-\n\n"), - buffer); - } - - // test woth positional - ret = wxSnprintf(buffer, size, - wxT("\n\n%8$s %2$e %3$le %4$i %5$li - test - %6$d %7$i %% %1$.4f\n\n"), 0.123123123, 123.123, - 123123123123123123123123.123123123123, 456, (long int)33333333, 789, 999, wxT("aa")); - if (ret >= 0) - { - CPPUNIT_ASSERT_STR_EQUAL( - wxT("\n\naa 1.231230e+02 1.231231e+23 456 33333333 - test - 789 999 %% 0.1231\n\n"), - buffer); - } + CMPTOSIZE(buffer, size, errMsg, + "123456789012 - test - 123 -4.567", + "%i%li - test - %d %.3f", + 123, (long int)456789012, 123, -4.567); + +#if wxUSE_PRINTF_POS_PARAMS + // test with positional + CMPTOSIZE(buffer, size, errMsg, + "-4.567 123 - test - 456789012 123", + "%4$.3f %1$i - test - %2$li %3$d", + 123, (long int)456789012, 123, -4.567); +#endif // test unicode/ansi conversion specifiers - ret = wxSnprintf(buffer, size, - wxT("\n\nunicode string: %ls %lc - ansi string: %hs %hc\n\n"), L"unicode!!", L'W', "ansi!!", 'w'); - if (ret >= 0) - { - CPPUNIT_ASSERT_STR_EQUAL( - wxT("\n\nunicode string: unicode!! W - ansi string: ansi!! w\n\n"), - buffer); - } + // + // NB: we use wxUnsafeSnprintf() as %hs and %hc are invalid in printf + // format and gcc would warn about this otherwise + + r = wxUnsafeSnprintf(buffer, size, + _T("unicode string/char: %ls/%lc -- ansi string/char: %hs/%hc"), + L"unicode", L'U', "ansi", 'A'); + wxString expected = + wxString(wxT("unicode string/char: unicode/U -- ansi string/char: ansi/A")).Left(size - 1); + + CPPUNIT_ASSERT( r != -1 ); + CPPUNIT_ASSERT_EQUAL( + expected, + wxString(buffer) + ); } void VsnprintfTestCase::BigToSmallBuffer() { - wxChar buf[1024], buf2[16], buf3[4], buf4; + // VC6 can't compile this code +#if !defined(__VISUALC__) || (__VISUALC__ >= 1310) +#if wxUSE_UNICODE + wchar_t bufw[1024], bufw2[16], bufw3[4], bufw4; + DoBigToSmallBuffer(bufw, 1024); + DoBigToSmallBuffer(bufw2, 16); + DoBigToSmallBuffer(bufw3, 4); + DoBigToSmallBuffer(&bufw4, 1); +#endif // wxUSE_UNICODE + + char bufa[1024], bufa2[16], bufa3[4], bufa4; + DoBigToSmallBuffer(bufa, 1024); + DoBigToSmallBuffer(bufa2, 16); + DoBigToSmallBuffer(bufa3, 4); + DoBigToSmallBuffer(&bufa4, 1); +#endif // !VC6 +} + +// Miscellaneous() test case helper: +void VsnprintfTestCase::DoMisc( + int expectedLen, + const wxString& expectedString, + size_t max, + const wxChar *format, ...) +{ + const size_t BUFSIZE = MAX_TEST_LEN - 1; + size_t i; + static int count = 0; + + wxASSERT(max <= BUFSIZE); + + for (i = 0; i < BUFSIZE; i++) + buf[i] = '*'; + buf[BUFSIZE] = 0; + + va_list ap; + va_start(ap, format); + + int n = wxVsnprintf(buf, max, format, ap); - Misc(buf, 1024); - Misc(buf2, 16); - Misc(buf3, 4); - Misc(&buf4, 1); + va_end(ap); + + // Prepare messages so that it is possible to see from the error which + // test was running. + wxString errStr, overflowStr; + errStr << _T("No.: ") << ++count << _T(", expected: ") << expectedLen + << _T(" '") << expectedString << _T("', result: "); + overflowStr << errStr << _T("buffer overflow"); + errStr << n << _T(" '") << buf << _T("'"); + + // turn them into std::strings + std::string errMsg(errStr.mb_str()); + std::string overflowMsg(overflowStr.mb_str()); + + CPPUNIT_ASSERT_MESSAGE(errMsg, + (expectedLen == -1 && size_t(n) >= max) || expectedLen == n); + + CPPUNIT_ASSERT_MESSAGE(errMsg, expectedString == buf); + + for (i = max; i < BUFSIZE; i++) + CPPUNIT_ASSERT_MESSAGE(overflowMsg, buf[i] == '*'); } + +void VsnprintfTestCase::Miscellaneous() +{ + // expectedLen, expectedString, max, format, ... + DoMisc(5, wxT("-1234"), 8, wxT("%d"), -1234); + DoMisc(7, wxT("1234567"), 8, wxT("%d"), 1234567); + DoMisc(-1, wxT("1234567"), 8, wxT("%d"), 12345678); + DoMisc(-1, wxT("-123456"), 8, wxT("%d"), -1234567890); + + DoMisc(6, wxT("123456"), 8, wxT("123456")); + DoMisc(7, wxT("1234567"), 8, wxT("1234567")); + DoMisc(-1, wxT("1234567"), 8, wxT("12345678")); + + DoMisc(6, wxT("123450"), 8, wxT("12345%d"), 0); + DoMisc(7, wxT("1234560"), 8, wxT("123456%d"), 0); + DoMisc(-1, wxT("1234567"), 8, wxT("1234567%d"), 0); + DoMisc(-1, wxT("1234567"), 8, wxT("12345678%d"), 0); + + DoMisc(6, wxT("12%45%"), 8, wxT("12%%45%%")); + DoMisc(7, wxT("12%45%7"), 8, wxT("12%%45%%7")); + DoMisc(-1, wxT("12%45%7"), 8, wxT("12%%45%%78")); + + DoMisc(5, wxT("%%%%%"), 6, wxT("%%%%%%%%%%")); + DoMisc(6, wxT("%%%%12"), 7, wxT("%%%%%%%%%d"), 12); +} + +#endif // wxUSE_WXVSNPRINTF