829d1102d2
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40584 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
250 lines
8.4 KiB
C++
250 lines
8.4 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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#define MAX_TEST_LEN 1024
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// temporary buffers
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static wxChar buf[MAX_TEST_LEN], buf2[MAX_TEST_LEN];
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// these macros makes it possible to write all tests without repeating a lot of times wxT() macro
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#define CMP5(expected, x, y, z, w) \
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wxSnprintf(buf, MAX_TEST_LEN, wxT(x), y, z, w); \
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snprintf(buf2, MAX_TEST_LEN, wxT(x), y, z, w); \
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\
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CPPUNIT_ASSERT_STR_EQUAL( buf2, buf ); \
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CPPUNIT_ASSERT_STR_EQUAL( expected, buf );
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#define CMP4(expected, x, y, z) \
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wxSnprintf(buf, MAX_TEST_LEN, wxT(x), y, z); \
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snprintf(buf2, MAX_TEST_LEN, wxT(x), y, z); \
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\
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CPPUNIT_ASSERT_STR_EQUAL( buf2, buf ); \
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CPPUNIT_ASSERT_STR_EQUAL( expected, buf );
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#define CMP3(expected, x, y) \
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wxSnprintf(buf, MAX_TEST_LEN, wxT(x), y); \
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snprintf(buf2, MAX_TEST_LEN, wxT(x), y); \
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\
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CPPUNIT_ASSERT_STR_EQUAL( buf2, buf ); \
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CPPUNIT_ASSERT_STR_EQUAL( expected, buf );
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#define CMP2(expected, x) \
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wxSnprintf(buf, MAX_TEST_LEN, wxT(x)); \
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snprintf(buf2, MAX_TEST_LEN, wxT(x)); \
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\
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CPPUNIT_ASSERT_STR_EQUAL( buf2, buf ); \
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CPPUNIT_ASSERT_STR_EQUAL( expected, buf );
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#define CMPTOSIZE(buffer, size, fmt, x, y, z, w) \
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wxSnprintf(buf, MAX_TEST_LEN, wxT(fmt), x, y, z, w); \
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snprintf(buf2, MAX_TEST_LEN, wxT(fmt), x, y, z, w); \
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\
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CPPUNIT_ASSERT_EQUAL( wxString(buf2, size), wxString(buf, size) );
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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( Asterisk );
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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 Asterisk();
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void BigToSmallBuffer();
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void Misc(wxChar *buffer, int size);
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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::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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CMP3("2.342000e+112", "%e",2.342E+112);
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CMP3("-2.3420e-112", "%10.4e",-2.342E-112);
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CMP3("-2.3420e-112", "%11.4e",-2.342E-112);
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CMP3(" -2.3420e-112", "%15.4e",-2.342E-112);
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CMP3("-0.02342", "%G",-2.342E-02);
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CMP3("3.1415E-116", "%G",3.1415e-116);
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CMP3("0003.141500e+103", "%016e", 3141.5e100);
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CMP3(" 3.141500e+103", "%16e", 3141.5e100);
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CMP3("3.141500e+103 ", "%-16e", 3141.5e100);
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CMP3("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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CMP3("3.300000", "%5f", 3.3);
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CMP3("3.000000", "%5f", 3.0);
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CMP3("0.000100", "%5f", .999999E-4);
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CMP3("0.000990", "%5f", .99E-3);
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CMP3("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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CMP3(" 3.3", "%5g", 3.3);
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CMP3(" 3", "%5g", 3.0);
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CMP3("9.99999e-115", "%5g", .999999E-114);
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CMP3("0.00099", "%5g", .99E-3);
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CMP3(" 3333", "%5g", 3333.0);
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CMP3(" 0.01", "%5g", 0.01);
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CMP3(" 3", "%5.g", 3.3);
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CMP3(" 3", "%5.g", 3.0);
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CMP3("1e-114", "%5.g", .999999E-114);
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CMP3("0.0001", "%5.g", 1.0E-4);
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CMP3("0.001", "%5.g", .99E-3);
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CMP3("3e+103", "%5.g", 3333.0E100);
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CMP3(" 0.01", "%5.g", 0.01);
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CMP3(" 3.3", "%5.2g", 3.3);
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CMP3(" 3", "%5.2g", 3.0);
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CMP3("1e-114", "%5.2g", .999999E-114);
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CMP3("0.00099", "%5.2g", .99E-3);
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CMP3("3.3e+103", "%5.2g", 3333.0E100);
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CMP3(" 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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CMP3(" abc", "%5s", wxT("abc"));
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CMP3(" a", "%5s", wxT("a"));
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CMP3("abcdefghi", "%5s", wxT("abcdefghi"));
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CMP3("abc ", "%-5s", wxT("abc"));
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CMP3("abcdefghi", "%-5s", wxT("abcdefghi"));
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CMP3("abcde", "%.5s", wxT("abcdefghi"));
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// some tests without any argument passed through ...
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CMP2(wxT("%"), wxT("%%"));
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CMP2(wxT("%%%"), wxT("%%%%%%"));
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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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void VsnprintfTestCase::Asterisk()
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{
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CMP5(" 0.1", "%*.*f", 10, 1, 0.123);
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CMP5(" 0.1230", "%*.*f", 10, 4, 0.123);
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CMP5("0.1", "%*.*f", 3, 1, 0.123);
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CMP4("%0.002", "%%%.*f", 3, 0.0023456789);
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}
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void VsnprintfTestCase::Misc(wxChar *buffer, int size)
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{
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// NB: remember that wx*printf could be mapped either to system implementation or to
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// wx implementation.
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// In the first case, when the output buffer is too small, the returned value can
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// be the number of characters required for the output buffer (conforming to ISO C99;
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// implemented in e.g. GNU libc >= 2.1), or just a negative number, usually -1;
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// (this is how e.g. MSVC's *printf() behaves).
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// Fortunately, in all implementations, when the output buffer is too small, it's
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// nonetheless filled up to its max size.
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// test without positionals
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CMPTOSIZE(buffer, size,
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wxT("%i %li - test - %d %.3f"),
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123, (long int)444444444, 555, -0.666);
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#if wxUSE_PRINTF_POS_PARAMS
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// test with positional
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CMPTOSIZE(buffer, size,
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wxT("%4$.3f %1$i - test - %2$li %3$d"),
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123, (long int)444444444, 555, -0.666);
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#endif
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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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CMPTOSIZE(buffer, size,
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wxT("unicode string: %ls %lc - ansi string: %hs %hc\n\n"),
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L"unicode!!", L'W', "ansi!!", 'w');
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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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