#endif // WX_PRECOMP
+// 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
+
-#define MAX_TEST_LEN 1024
+// ----------------------------------------------------------------------------
+// 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 wxT() macro
+// 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 CMP5(expected, x, y, z, w) \
r=wxSnprintf(buf, MAX_TEST_LEN, wxT(x), y, z, w); \
- CPPUNIT_ASSERT( r > 0 ); \
+ CPPUNIT_ASSERT( r == (int)wxStrlen(buf) ); \
ASSERT_STR_EQUAL( wxT(expected), buf );
#define CMP4(expected, x, y, z) \
r=wxSnprintf(buf, MAX_TEST_LEN, wxT(x), y, z); \
- CPPUNIT_ASSERT( r > 0 ); \
+ CPPUNIT_ASSERT( r == (int)wxStrlen(buf) ); \
ASSERT_STR_EQUAL( wxT(expected), buf );
#define CMP3(expected, x, y) \
r=wxSnprintf(buf, MAX_TEST_LEN, wxT(x), y); \
- CPPUNIT_ASSERT( r > 0 ); \
+ CPPUNIT_ASSERT( r == (int)wxStrlen(buf) ); \
ASSERT_STR_EQUAL( wxT(expected), buf );
#define CMP2(expected, x) \
r=wxSnprintf(buf, MAX_TEST_LEN, wxT(x)); \
- CPPUNIT_ASSERT( r > 0 ); \
+ 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, expected, fmt, x, y, z, w) \
r=wxSnprintf(buffer, size, wxT(fmt), x, y, z, w); \
CPPUNIT_ASSERT( r > 0 ); \
private:
CPPUNIT_TEST_SUITE( VsnprintfTestCase );
+ CPPUNIT_TEST( C );
CPPUNIT_TEST( D );
CPPUNIT_TEST( X );
CPPUNIT_TEST( O );
CPPUNIT_TEST( Miscellaneous );
CPPUNIT_TEST_SUITE_END();
+ void C();
void D();
void X();
void O();
void Miscellaneous();
void Misc(wxChar *buffer, int size);
+ // 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, ...);
+
DECLARE_NO_COPY_CLASS(VsnprintfTestCase)
};
{
}
+void VsnprintfTestCase::C()
+{
+ CMP5("hi!", "%c%c%c", wxT('h'), wxT('i'), wxT('!'));
+
+ // 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).
+
+ DoMisc(14, wxT("Hello \0 World!"), 16, wxT("Hello %c World!"), wxT('\0'));
+}
+
void VsnprintfTestCase::D()
{
CMP3("+123456", "%+d", 123456);
CMP3(ABCDE, "%.5s", wxT(ABCDEFGHI));
#endif
+
+ // test a string which have the NULL character after "ab";
+ // obviously it should be handled exactly like just as "ab"
+ CMP3(" ab", "%5s", wxT("ab\0cdefghi"));
}
void VsnprintfTestCase::Asterisk()
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). Luckily, in all implementations, when the
- // output buffer is too small, it's nonetheless filled up to its max
- // 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 always return the number of characters which
+ // 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
// test without positionals
CMPTOSIZE(buffer, size, "123 444444444 - test - 555 -0.666",
Misc(&buf4, 1);
}
-static void DoMisc(
+void VsnprintfTestCase::DoMisc(
int expectedLen,
const wxString& expectedString,
size_t max,
const wxChar *format, ...)
{
- const size_t BUFSIZE = 16;
- wxChar buf[BUFSIZE + 1];
+ const size_t BUFSIZE = MAX_TEST_LEN - 1;
size_t i;
static int count = 0;
projects / wxWidgets.git / commitdiff
