a4940bf696
This will allow using this class in the library code too. No real changes yet, this is a pure refactoring. This commit is best viewed using git --color-moved option.
548 lines
18 KiB
C++
548 lines
18 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: tests/strings/vsnprintf.cpp
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// Purpose: wxVsnprintf unit test
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// Author: Francesco Montorsi
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// (part of this file was taken from CMP.c of TRIO package
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// written by Bjorn Reese and Daniel Stenberg)
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// Created: 2006-04-01
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// Copyright: (c) 2006 Francesco Montorsi, Bjorn Reese and Daniel Stenberg
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///////////////////////////////////////////////////////////////////////////////
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "testprec.h"
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#include "wx/crt.h"
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#if wxUSE_WXVSNPRINTF
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#include "wx/wxchar.h"
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#endif // WX_PRECOMP
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#include "wx/private/localeset.h"
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// NOTE: for more info about the specification of wxVsnprintf() behaviour you can
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// refer to the following page of the GNU libc manual:
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// http://www.gnu.org/software/libc/manual/html_node/Formatted-Output.html
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// ----------------------------------------------------------------------------
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// global utilities for testing
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// ----------------------------------------------------------------------------
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#define MAX_TEST_LEN 1024
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// temporary buffers
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static wxChar buf[MAX_TEST_LEN];
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int r;
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// Helper macro verifying both the return value of wxSnprintf() and its output.
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//
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// NOTE: the expected string length with this macro must not exceed MAX_TEST_LEN
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#define CMP(expected, fmt, ...) \
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r=wxSnprintf(buf, MAX_TEST_LEN, fmt, ##__VA_ARGS__); \
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CHECK( r == (int)wxStrlen(buf) ); \
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CHECK( buf == wxString(expected) )
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// Another helper which takes the size explicitly instead of using MAX_TEST_LEN
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//
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// NOTE: this macro is used also with too-small buffers (see Miscellaneous())
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// test function, thus the return value can be either -1 or > size and we
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// cannot check if r == (int)wxStrlen(buf)
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#define CMPTOSIZE(buffer, size, failuremsg, expected, fmt, ...) \
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r=wxSnprintf(buffer, size, fmt, ##__VA_ARGS__); \
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INFO(failuremsg); \
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CHECK( buffer == wxString(expected).Left(size - 1) )
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// this is the same as wxSnprintf() but it passes the format string to
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// wxVsnprintf() without using WX_ATTRIBUTE_PRINTF and thus suppresses the gcc
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// checks (and resulting warnings) for the format string
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//
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// use with extreme care and only when you're really sure the warnings must be
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// suppressed!
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template<typename T>
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static int
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wxUnsafeSnprintf(T *buf, size_t len, const wxChar *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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int rc = wxVsnprintf(buf, len, fmt, args);
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va_end(args);
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return rc;
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}
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// ----------------------------------------------------------------------------
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// test fixture
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// ----------------------------------------------------------------------------
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// Explicitly set C locale to avoid check failures when running on machines
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// with a locale where the decimal point is not '.'
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class VsnprintfTestCase : wxCLocaleSetter
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{
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public:
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VsnprintfTestCase() : wxCLocaleSetter() { }
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protected:
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template<typename T>
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void DoBigToSmallBuffer(T *buffer, int size);
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// compares the expectedString and the result of wxVsnprintf() char by char
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// for all its length (not only for first expectedLen chars) and also
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// checks the return value
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void DoMisc(int expectedLen, const wxString& expectedString,
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size_t max, const wxChar *format, ...);
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wxDECLARE_NO_COPY_CLASS(VsnprintfTestCase);
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};
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::C", "[vsnprintf]")
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{
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CMP("hi!", "%c%c%c", wxT('h'), wxT('i'), wxT('!'));
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// NOTE:
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// the NULL characters _can_ be passed to %c to e.g. create strings
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// with embedded NULs (because strings are not always supposed to be
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// NUL-terminated).
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DoMisc(14, wxT("Hello \0 World!"), 16, wxT("Hello %c World!"), wxT('\0'));
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::D", "[vsnprintf]")
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{
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CMP("+123456", "%+d", 123456);
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CMP("-123456", "%d", -123456);
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CMP(" 123456", "% d", 123456);
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CMP(" 123456", "%10d", 123456);
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CMP("0000123456", "%010d", 123456);
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CMP("-123456 ", "%-10d", -123456);
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::X", "[vsnprintf]")
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{
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CMP("ABCD", "%X", 0xABCD);
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CMP("0XABCD", "%#X", 0xABCD);
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CMP("0xabcd", "%#x", 0xABCD);
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::O", "[vsnprintf]")
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{
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CMP("1234567", "%o", 01234567);
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CMP("01234567", "%#o", 01234567);
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::P", "[vsnprintf]")
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{
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// The exact format used for "%p" is not specified by the standard and so
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// varies among different platforms, so we need to expect different results
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// here (remember that while we test our own wxPrintf() code here, it uses
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// the system sprintf() for actual formatting so the results are still
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// different under different systems).
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#if defined(__VISUALC__) || (defined(__MINGW32__) && \
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(!defined(__USE_MINGW_ANSI_STDIO) || !__USE_MINGW_ANSI_STDIO))
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#if SIZEOF_VOID_P == 4
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CMP("00ABCDEF", "%p", (void*)0xABCDEF);
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CMP("00000000", "%p", (void*)NULL);
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#elif SIZEOF_VOID_P == 8
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CMP("0000ABCDEFABCDEF", "%p", (void*)0xABCDEFABCDEF);
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CMP("0000000000000000", "%p", (void*)NULL);
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#endif
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#elif defined(__MINGW32__)
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#if SIZEOF_VOID_P == 4
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CMP("00abcdef", "%p", (void*)0xABCDEF);
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CMP("00000000", "%p", (void*)NULL);
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#elif SIZEOF_VOID_P == 8
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CMP("0000abcdefabcdef", "%p", (void*)0xABCDEFABCDEF);
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CMP("0000000000000000", "%p", (void*)NULL);
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#endif
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#elif defined(__GNUG__)
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// glibc prints pointers as %#x except for NULL pointers which are printed
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// as '(nil)'.
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CMP("0xabcdef", "%p", (void*)0xABCDEF);
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CMP("(nil)", "%p", (void*)NULL);
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#endif
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::N", "[vsnprintf]")
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{
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int nchar;
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wxSnprintf(buf, MAX_TEST_LEN, wxT("%d %s%n\n"), 3, wxT("bears"), &nchar);
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CHECK( nchar == 7 );
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::E", "[vsnprintf]")
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{
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// NB: Use at least three digits for the exponent to workaround
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// differences between MSVC, MinGW and GNU libc.
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// See wxUSING_MANTISSA_SIZE_3 in testprec.h as well.
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//
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// Some examples:
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// printf("%e",2.342E+02);
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// -> under MSVC7.1 prints: 2.342000e+002
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// -> under GNU libc 2.4 prints: 2.342000e+02
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CMP("2.342000e+112", "%e",2.342E+112);
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CMP("-2.3420e-112", "%10.4e",-2.342E-112);
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CMP("-2.3420e-112", "%11.4e",-2.342E-112);
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CMP(" -2.3420e-112", "%15.4e",-2.342E-112);
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CMP("-0.02342", "%G",-2.342E-02);
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CMP("3.1415E-116", "%G",3.1415e-116);
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CMP("0003.141500e+103", "%016e", 3141.5e100);
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CMP(" 3.141500e+103", "%16e", 3141.5e100);
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CMP("3.141500e+103 ", "%-16e", 3141.5e100);
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CMP("3.142e+103", "%010.3e", 3141.5e100);
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::F", "[vsnprintf]")
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{
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CMP("3.300000", "%5f", 3.3);
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CMP("3.000000", "%5f", 3.0);
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CMP("0.000100", "%5f", .999999E-4);
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CMP("0.000990", "%5f", .99E-3);
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CMP("3333.000000", "%5f", 3333.0);
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::G", "[vsnprintf]")
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{
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// NOTE: the same about E() testcase applies here...
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CMP(" 3.3", "%5g", 3.3);
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CMP(" 3", "%5g", 3.0);
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CMP("9.99999e-115", "%5g", .999999E-114);
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CMP("0.00099", "%5g", .99E-3);
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CMP(" 3333", "%5g", 3333.0);
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CMP(" 0.01", "%5g", 0.01);
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CMP(" 3", "%5.g", 3.3);
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CMP(" 3", "%5.g", 3.0);
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CMP("1e-114", "%5.g", .999999E-114);
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CMP("0.0001", "%5.g", 1.0E-4);
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CMP("0.001", "%5.g", .99E-3);
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CMP("3e+103", "%5.g", 3333.0E100);
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CMP(" 0.01", "%5.g", 0.01);
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CMP(" 3.3", "%5.2g", 3.3);
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CMP(" 3", "%5.2g", 3.0);
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CMP("1e-114", "%5.2g", .999999E-114);
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CMP("0.00099", "%5.2g", .99E-3);
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CMP("3.3e+103", "%5.2g", 3333.0E100);
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CMP(" 0.01", "%5.2g", 0.01);
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::S", "[vsnprintf]")
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{
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CMP(" abc", "%5s", wxT("abc"));
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CMP(" a", "%5s", wxT("a"));
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CMP("abcdefghi", "%5s", wxT("abcdefghi"));
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CMP("abc ", "%-5s", wxT("abc"));
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CMP("abcdefghi", "%-5s", wxT("abcdefghi"));
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CMP("abcde", "%.5s", wxT("abcdefghi"));
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// do the same tests but with Unicode characters:
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#if wxUSE_UNICODE
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// Unicode code points from U+03B1 to U+03B9 are the greek letters alpha-iota;
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// UTF8 encoding of such code points is 0xCEB1 to 0xCEB9
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#define ALPHA "\xCE\xB1"
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// alpha
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#define ABC "\xCE\xB1\xCE\xB2\xCE\xB3"
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// alpha+beta+gamma
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#define ABCDE "\xCE\xB1\xCE\xB2\xCE\xB3\xCE\xB4\xCE\xB5"
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// alpha+beta+gamma+delta+epsilon
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#define ABCDEFGHI "\xCE\xB1\xCE\xB2\xCE\xB3\xCE\xB4\xCE\xB5\xCE\xB6\xCE\xB7\xCE\xB8\xCE\xB9"
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// alpha+beta+gamma+delta+epsilon+zeta+eta+theta+iota
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// the 'expected' and 'arg' parameters of this macro are supposed to be
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// UTF-8 strings
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#define CMP_UTF8(expected, fmt, arg) \
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CHECK \
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( \
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(int)wxString::FromUTF8(expected).length() == \
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wxSnprintf(buf, MAX_TEST_LEN, fmt, wxString::FromUTF8(arg)) \
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); \
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CHECK( wxString::FromUTF8(expected) == buf )
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CMP_UTF8(" " ABC, "%5s", ABC);
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CMP_UTF8(" " ALPHA, "%5s", ALPHA);
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CMP_UTF8(ABCDEFGHI, "%5s", ABCDEFGHI);
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CMP_UTF8(ABC " ", "%-5s", ABC);
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CMP_UTF8(ABCDEFGHI, "%-5s", ABCDEFGHI);
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CMP_UTF8(ABCDE, "%.5s", ABCDEFGHI);
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#endif // wxUSE_UNICODE
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// test a string which has a NULL character after "ab";
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// obviously it should be handled exactly like just as "ab"
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CMP(" ab", "%5s", wxT("ab\0cdefghi"));
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::Asterisk", "[vsnprintf]")
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{
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CMP(" 0.1", "%*.*f", 10, 1, 0.123);
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CMP(" 0.1230", "%*.*f", 10, 4, 0.123);
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CMP("0.1", "%*.*f", 3, 1, 0.123);
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CMP("%0.002", "%%%.*f", 3, 0.0023456789);
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CMP(" a", "%*c", 8, 'a');
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CMP(" four", "%*s", 8, "four");
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CMP(" four four", "%*s %*s", 8, "four", 6, "four");
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::Percent", "[vsnprintf]")
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{
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// some tests without any argument passed through ...
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CMP("%", "%%");
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CMP("%%%", "%%%%%%");
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CMP("% abc", "%%%5s", wxT("abc"));
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CMP("% abc%", "%%%5s%%", wxT("abc"));
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// do not test odd number of '%' symbols as different implementations
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// of snprintf() give different outputs as this situation is not considered
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// by any standard (in fact, GCC will also warn you about a spurious % if
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// you write %%% as argument of some *printf function !)
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// Compare(wxT("%"), wxT("%%%"));
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}
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#ifdef wxLongLong_t
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::LongLong", "[vsnprintf]")
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{
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CMP("123456789", "%lld", (wxLongLong_t)123456789);
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CMP("-123456789", "%lld", (wxLongLong_t)-123456789);
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CMP("123456789", "%llu", (wxULongLong_t)123456789);
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#ifdef __WINDOWS__
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CMP("123456789", "%I64d", (wxLongLong_t)123456789);
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CMP("123456789abcdef", "%I64x", wxLL(0x123456789abcdef));
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#endif
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}
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#endif
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::WrongFormatStrings", "[vsnprintf]")
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{
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// test how wxVsnprintf() behaves with wrong format string:
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// a missing positional arg should result in an assert
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WX_ASSERT_FAILS_WITH_ASSERT(
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wxSnprintf(buf, MAX_TEST_LEN, wxT("%1$d %3$d"), 1, 2, 3) );
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// positional and non-positionals in the same format string:
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errno = 0;
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r = wxSnprintf(buf, MAX_TEST_LEN, wxT("%1$d %d %3$d"), 1, 2, 3);
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CHECK( r == -1 );
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CHECK( errno == EINVAL );
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}
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// BigToSmallBuffer() test case helper:
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template<typename T>
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void VsnprintfTestCase::DoBigToSmallBuffer(T *buffer, int size)
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{
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// Remember that wx*printf could be mapped either to system
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// implementation or to wx implementation.
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// In the first case, when the output buffer is too small, the returned
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// value can be the number of characters required for the output buffer
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// (conforming to ISO C99; implemented in e.g. GNU libc >= 2.1), or
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// just a negative number, usually -1; (this is how e.g. MSVC's
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// *printf() behaves). Luckily, in all implementations, when the
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// output buffer is too small, it's nonetheless filled up to its max size.
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//
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// Note that in the second case (i.e. when we're using our own implementation),
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// wxVsnprintf() will return the number of characters written in the standard
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// output or
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// -1 if there was an error in the format string
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// maxSize+1 if the output buffer is too small
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wxString errStr;
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errStr << "The size of the buffer was " << size;
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std::string errMsg(errStr.mb_str());
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// test without positionals
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CMPTOSIZE(buffer, size, errMsg,
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"123456789012 - test - 123 -4.567",
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"%i%li - test - %d %.3f",
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123, (long int)456789012, 123, -4.567);
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#if wxUSE_PRINTF_POS_PARAMS
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// test with positional
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CMPTOSIZE(buffer, size, errMsg,
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"-4.567 123 - test - 456789012 123",
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"%4$.3f %1$i - test - %2$li %3$d",
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123, (long int)456789012, 123, -4.567);
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#endif
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// test unicode/ansi conversion specifiers
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//
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// NB: we use wxUnsafeSnprintf() as %hs and %hc are invalid in printf
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// format and gcc would warn about this otherwise
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r = wxUnsafeSnprintf(buffer, size,
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wxT("unicode string/char: %ls/%lc -- ansi string/char: %hs/%hc"),
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L"unicode", L'U', "ansi", 'A');
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wxString expected =
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wxString(wxT("unicode string/char: unicode/U -- ansi string/char: ansi/A")).Left(size - 1);
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CHECK( expected == buffer );
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}
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TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::BigToSmallBuffer", "[vsnprintf]")
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{
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#if wxUSE_UNICODE
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wchar_t bufw[1024], bufw2[16], bufw3[4], bufw4;
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DoBigToSmallBuffer(bufw, 1024);
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DoBigToSmallBuffer(bufw2, 16);
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DoBigToSmallBuffer(bufw3, 4);
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DoBigToSmallBuffer(&bufw4, 1);
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#endif // wxUSE_UNICODE
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char bufa[1024], bufa2[16], bufa3[4], bufa4;
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DoBigToSmallBuffer(bufa, 1024);
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DoBigToSmallBuffer(bufa2, 16);
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DoBigToSmallBuffer(bufa3, 4);
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DoBigToSmallBuffer(&bufa4, 1);
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}
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// Miscellaneous() test case helper:
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void VsnprintfTestCase::DoMisc(
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int expectedLen,
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const wxString& expectedString,
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size_t max,
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const wxChar *format, ...)
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{
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const size_t BUFSIZE = MAX_TEST_LEN - 1;
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size_t i;
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static int count = 0;
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wxASSERT(max <= BUFSIZE);
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for (i = 0; i < BUFSIZE; i++)
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buf[i] = '*';
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buf[BUFSIZE] = 0;
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va_list ap;
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va_start(ap, format);
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int n = wxVsnprintf(buf, max, format, ap);
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va_end(ap);
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// Prepare messages so that it is possible to see from the error which
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// test was running.
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wxString errStr, overflowStr;
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errStr << wxT("No.: ") << ++count << wxT(", expected: ") << expectedLen
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<< wxT(" '") << expectedString << wxT("', result: ");
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overflowStr << errStr << wxT("buffer overflow");
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errStr << n << wxT(" '") << buf << wxT("'");
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|
// turn them into std::strings
|
|
std::string errMsg(errStr.mb_str());
|
|
std::string overflowMsg(overflowStr.mb_str());
|
|
|
|
INFO(errMsg);
|
|
if ( size_t(n) < max )
|
|
CHECK(expectedLen == n);
|
|
else
|
|
CHECK(expectedLen == -1);
|
|
|
|
CHECK(expectedString == buf);
|
|
|
|
for (i = max; i < BUFSIZE; i++)
|
|
{
|
|
INFO(overflowMsg);
|
|
CHECK(buf[i] == '*');
|
|
}
|
|
}
|
|
|
|
TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::Miscellaneous", "[vsnprintf]")
|
|
{
|
|
// 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);
|
|
}
|
|
|
|
|
|
/* (C) Copyright C E Chew
|
|
*
|
|
* Feel free to copy, use and distribute this software provided:
|
|
*
|
|
* 1. you do not pretend that you wrote it
|
|
* 2. you leave this copyright notice intact.
|
|
*/
|
|
|
|
TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::GlibcMisc1", "[vsnprintf]")
|
|
{
|
|
CMP(" ", "%5.s", "xyz");
|
|
CMP(" 33", "%5.f", 33.3);
|
|
#if defined(wxDEFAULT_MANTISSA_SIZE_3)
|
|
CMP(" 3e+008", "%8.e", 33.3e7);
|
|
CMP(" 3E+008", "%8.E", 33.3e7);
|
|
CMP("3e+001", "%.g", 33.3);
|
|
CMP("3E+001", "%.G", 33.3);
|
|
#else
|
|
CMP(" 3e+08", "%8.e", 33.3e7);
|
|
CMP(" 3E+08", "%8.E", 33.3e7);
|
|
CMP("3e+01", "%.g", 33.3);
|
|
CMP("3E+01", "%.G", 33.3);
|
|
#endif
|
|
}
|
|
|
|
TEST_CASE_METHOD(VsnprintfTestCase, "Vsnprintf::GlibcMisc2", "[vsnprintf]")
|
|
{
|
|
int prec;
|
|
wxString test_format;
|
|
|
|
prec = 0;
|
|
CMP("3", "%.*g", prec, 3.3);
|
|
|
|
prec = 0;
|
|
CMP("3", "%.*G", prec, 3.3);
|
|
|
|
prec = 0;
|
|
CMP(" 3", "%7.*G", prec, 3.33);
|
|
|
|
prec = 3;
|
|
CMP(" 041", "%04.*o", prec, 33);
|
|
|
|
prec = 7;
|
|
CMP(" 0000033", "%09.*u", prec, 33);
|
|
|
|
prec = 3;
|
|
CMP(" 021", "%04.*x", prec, 33);
|
|
|
|
prec = 3;
|
|
CMP(" 021", "%04.*X", prec, 33);
|
|
}
|
|
|
|
#endif // wxUSE_WXVSNPRINTF
|
|
|