bacd54f604
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39478 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
239 lines
7.4 KiB
C++
239 lines
7.4 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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// RCS-ID: $Id$
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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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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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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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// if 1 then instead of the hard-coded expected strings, the obtained results will be
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// compared to the output of the system's vsnprintf() implementation.
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// NOTE: this requires a vsnprintf() implementation which supports positional parameters.
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#define USE_LIBC 0
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// this makes it possible to write all tests without repeating a lot of times wxT() macro
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#define CMP(x, y, z) Compare(wxT(x), wxT(y), z)
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// ----------------------------------------------------------------------------
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// test class
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// ----------------------------------------------------------------------------
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class VsnprintfTestCase : public CppUnit::TestCase
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{
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public:
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VsnprintfTestCase();
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private:
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CPPUNIT_TEST_SUITE( VsnprintfTestCase );
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CPPUNIT_TEST( E );
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CPPUNIT_TEST( F );
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CPPUNIT_TEST( G );
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CPPUNIT_TEST( S );
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CPPUNIT_TEST( BigToSmallBuffer );
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CPPUNIT_TEST_SUITE_END();
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void E();
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void F();
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void G();
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void S();
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void BigToSmallBuffer();
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// some helpers
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void Misc(wxChar *buffer, int size);
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void Compare(const wxChar *expected, const wxChar *format, ...) const;
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void CompareV(wxChar *buf, wxChar *buf2, size_t len, const wxChar *format, va_list argptr) const;
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DECLARE_NO_COPY_CLASS(VsnprintfTestCase)
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};
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// register in the unnamed registry so that these tests are run by default
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CPPUNIT_TEST_SUITE_REGISTRATION( VsnprintfTestCase );
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// also include in it's own registry so that these tests can be run alone
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( VsnprintfTestCase, "VsnprintfTestCase" );
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VsnprintfTestCase::VsnprintfTestCase()
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{
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}
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void VsnprintfTestCase::CompareV(wxChar *buf, wxChar *buf2, size_t len,
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const wxChar *format, va_list argptr) const
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{
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#if USE_LIBC
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va_list argptr2;
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wxVaCopy(argptr2, argptr);
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#endif
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wxVsnprintf( buf, len, format, argptr );
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va_end(argptr);
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#if USE_LIBC
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vsnprintf( buf2, len, format, argptr2 ); // use system's implementation
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va_end(argptr2);
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#else
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wxUnusedVar(buf2);
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#endif
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}
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void VsnprintfTestCase::Compare(const wxChar *expected, const wxChar *format, ...) const
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{
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static wxChar buf[1024],
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buf2[1024];
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va_list argptr;
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va_start( argptr, format );
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CompareV( buf, buf2, 1024, format, argptr );
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va_end(argptr);
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#if USE_LIBC
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CPPUNIT_ASSERT_STR_EQUAL( buf2, buf );
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#else
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CPPUNIT_ASSERT_STR_EQUAL( expected, buf );
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#endif
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}
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void VsnprintfTestCase::E()
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{
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// NB: there are no standards about the minimum exponent width
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// (and the width of the %e conversion specifier refers to the
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// mantissa, not to the exponent).
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// Since newer MSVC versions use 3 digits as minimum exponent
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// width while GNU libc uses 2 digits as minimum width, here we
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// workaround this problem using for the exponent values with at
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// least three digits.
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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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void VsnprintfTestCase::F()
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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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void VsnprintfTestCase::G()
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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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void VsnprintfTestCase::S()
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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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}
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void VsnprintfTestCase::Misc(wxChar *buffer, int size)
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{
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int ret;
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// test without positionals
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ret = wxSnprintf(buffer, size,
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wxT("\n\n%s %e %le %i %li - test - %d %i %% -%*.*f-\n\n"), wxT("aa"), 123.123e100,
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123123123123123123123123.123123123123e100, 456, (long int)33333333, 789, 999, 10, 1, 0.123);
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if (ret >= 0)
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{
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CPPUNIT_ASSERT_STR_EQUAL(
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wxT("\n\naa 1.231230e+102 1.231231e+123 456 33333333 - test - 789 999 %% - 0.1-\n\n"),
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buffer);
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}
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// test woth positional
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ret = wxSnprintf(buffer, size,
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wxT("\n\n%8$s %2$e %3$le %4$i %5$li - test - %6$d %7$i %% %1$.4f\n\n"), 0.123123123, 123.123e100,
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123123123123123123123123.123123123123e100, 456, (long int)33333333, 789, 999, wxT("aa"));
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if (ret >= 0)
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{
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CPPUNIT_ASSERT_STR_EQUAL(
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wxT("\n\naa 1.231230e+102 1.231231e+123 456 33333333 - test - 789 999 %% 0.1231\n\n"),
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buffer);
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}
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// test unicode/ansi conversion specifiers
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// NB: this line will output two warnings like these, on GCC:
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// warning: use of ‘h’ length modifier with ‘s’ type character
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// (i.e. GCC warns you that 'h' is not legal on 's' conv spec) but they must be ignored
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// as here we explicitely want to test the wxSnprintf() behaviour in such case
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ret = wxSnprintf(buffer, size,
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wxT("\n\nunicode string: %ls %lc - ansi string: %hs %hc\n\n"), L"unicode!!", L'W', "ansi!!", 'w');
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if (ret >= 0)
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{
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CPPUNIT_ASSERT_STR_EQUAL(
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wxT("\n\nunicode string: unicode!! W - ansi string: ansi!! w\n\n"),
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buffer);
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}
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}
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void VsnprintfTestCase::BigToSmallBuffer()
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{
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wxChar buf[1024], buf2[16], buf3[4], buf4;
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Misc(buf, 1024);
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Misc(buf2, 16);
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Misc(buf3, 4);
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Misc(&buf4, 1);
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}
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