/////////////////////////////////////////////////////////////////////////////// // Name: tests/strings/vsnprintf.cpp // Purpose: wxVsnprintf unit test // Author: Francesco Montorsi // (part of this file was taken from CMP.c of TRIO package // written by Bjorn Reese and Daniel Stenberg) // Created: 2006-04-01 // RCS-ID: $Id$ // Copyright: (c) 2006 Francesco Montorsi, Bjorn Reese and Daniel Stenberg /////////////////////////////////////////////////////////////////////////////// // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- #include "testprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #ifndef WX_PRECOMP #include "wx/wx.h" #include "wx/wxchar.h" #endif // WX_PRECOMP #define MAX_TEST_LEN 1024 // temporary buffers static wxChar buf[MAX_TEST_LEN]; // these macros makes it possible to write all tests without repeating a lot of times wxT() macro #define ASSERT_STR_EQUAL( a, b ) \ CPPUNIT_ASSERT_EQUAL( wxString(a), wxString(b) ); #define CMP5(expected, x, y, z, w) \ wxSnprintf(buf, MAX_TEST_LEN, wxT(x), y, z, w); \ \ ASSERT_STR_EQUAL( wxT(expected), buf ); #define CMP4(expected, x, y, z) \ wxSnprintf(buf, MAX_TEST_LEN, wxT(x), y, z); \ \ ASSERT_STR_EQUAL( wxT(expected), buf ); #define CMP3(expected, x, y) \ wxSnprintf(buf, MAX_TEST_LEN, wxT(x), y); \ \ ASSERT_STR_EQUAL( wxT(expected), buf ); #define CMP2(expected, x) \ wxSnprintf(buf, MAX_TEST_LEN, wxT(x)); \ \ ASSERT_STR_EQUAL( wxT(expected), buf ); #define CMPTOSIZE(buffer, size, expected, fmt, x, y, z, w) \ wxSnprintf(buffer, size, wxT(fmt), x, y, z, w); \ \ CPPUNIT_ASSERT_EQUAL( wxString(wxT(expected)).Left(size - 1), \ wxString(buffer) ) // ---------------------------------------------------------------------------- // test class // ---------------------------------------------------------------------------- class VsnprintfTestCase : public CppUnit::TestCase { public: VsnprintfTestCase(); private: CPPUNIT_TEST_SUITE( VsnprintfTestCase ); CPPUNIT_TEST( E ); CPPUNIT_TEST( F ); CPPUNIT_TEST( G ); CPPUNIT_TEST( S ); CPPUNIT_TEST( Asterisk ); CPPUNIT_TEST( Percent ); CPPUNIT_TEST( LongLong ); CPPUNIT_TEST( BigToSmallBuffer ); CPPUNIT_TEST_SUITE_END(); void E(); void F(); void G(); void S(); void Asterisk(); void Percent(); void LongLong(); void Unicode(); void BigToSmallBuffer(); void Misc(wxChar *buffer, int size); DECLARE_NO_COPY_CLASS(VsnprintfTestCase) }; // register in the unnamed registry so that these tests are run by default CPPUNIT_TEST_SUITE_REGISTRATION( VsnprintfTestCase ); // also include in it's own registry so that these tests can be run alone CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( VsnprintfTestCase, "VsnprintfTestCase" ); VsnprintfTestCase::VsnprintfTestCase() { } 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() { 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() { // 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() { 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 #define ALPHA "\x3B1" #define BETA "\x3B2" #define GAMMA "\x3B3" #define DELTA "\x3B4" #define EPSILON "\x3B5" #define ZETA "\x3B6" #define ETA "\x3B7" #define THETA "\x3B8" #define IOTA "\x3B9" #define ABC ALPHA BETA GAMMA #define ABCDE ALPHA BETA GAMMA DELTA EPSILON #define ABCDEFGHI ALPHA BETA GAMMA DELTA EPSILON ZETA ETA THETA IOTA CMP3(" " ABC, "%5s", wxT(ABC)); CMP3(" " ALPHA, "%5s", wxT(ALPHA)); CMP3(ABCDEFGHI, "%5s", wxT(ABCDEFGHI)); CMP3(ABC " ", "%-5s", wxT(ABC)); CMP3(ABCDEFGHI, "%-5s", wxT(ABCDEFGHI)); CMP3(ABCDE, "%.5s", wxT(ABCDEFGHI)); #endif } void VsnprintfTestCase::Asterisk() { 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); } 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("%%%")); } void VsnprintfTestCase::LongLong() { CMP3("123456789", "%lld", (long long int)123456789); CMP3("-123456789", "%lld", (long long int)-123456789); CMP3("123456789", "%llu", (unsigned long long int)123456789); } void VsnprintfTestCase::Misc(wxChar *buffer, int size) { // NB: 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). Fortunately, in all implementations, when the // output buffer is too small, it's nonetheless filled up to its max // size. // test without positionals CMPTOSIZE(buffer, size, "123 444444444 - test - 555 -0.666", "%i %li - test - %d %.3f", 123, (long int)444444444, 555, -0.666); #if wxUSE_PRINTF_POS_PARAMS // test with positional CMPTOSIZE(buffer, size, "-0.666 123 - test - 444444444 555", "%4$.3f %1$i - test - %2$li %3$d", 123, (long int)444444444, 555, -0.666); #endif // test unicode/ansi conversion specifiers // NB: this line will output two warnings like these, on GCC: // warning: use of 'h' length modifier with 's' type character (i.e. // GCC warns you that 'h' is not legal on 's' conv spec) but they must // be ignored as here we explicitely want to test the wxSnprintf() // behaviour in such case CMPTOSIZE(buffer, size, "unicode string: unicode!! W - ansi string: ansi!! w\n\n", "unicode string: %ls %lc - ansi string: %hs %hc\n\n", L"unicode!!", L'W', "ansi!!", 'w'); } void VsnprintfTestCase::BigToSmallBuffer() { wxChar buf[1024], buf2[16], buf3[4], buf4; Misc(buf, 1024); Misc(buf2, 16); Misc(buf3, 4); Misc(&buf4, 1); }