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wxwidgets/tests/base64/base64.cpp
Vadim Zeitlin 4f4c5fcfdf Use nullptr instead of NULL in the code and documentation 
This is a combination of running clang-tidy with modernize-use-nullptr
check for some ports (GTK, X11, OSX) and manual changes to the ports for
which it couldn't be used easily (MSW, DFB) and also manually updating
the docs.

Also replace NULL with null or nullptr in the comments as this is more
consistent with the use of nullptr in the code and makes it simpler to
grep for the remaining occurrences of NULL itself.

And also use null in the assert messages.

Only a few occurrences of "NULL" are still left in non-C files, mostly
corresponding to unclear comments or string output which it might not be
safe to change.
2022-10-18 01:25:25 +02:00

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9.9 KiB
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///////////////////////////////////////////////////////////////////////////////
// Name: tests/base64/base64.cpp
// Purpose: wxBase64Encode/Decode unit test
// Author: Charles Reimers
// Created: 2007-06-22
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "testprec.h"
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif // WX_PRECOMP
#if wxUSE_BASE64
#include "wx/base64.h"
static const char encoded0to255[] =
"AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIj"
"JCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZH"
"SElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWpr"
"bG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6P"
"kJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq+wsbKz"
"tLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX"
"2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7"
"/P3+/w==";
static void
generatePatternedData(void* buff, size_t len, unsigned char startVal,
unsigned char addVal, unsigned char multVal = 1,
unsigned char xorMask = 0, unsigned char andMask = 255)
{
unsigned char *cbuff = (unsigned char *)buff;
unsigned char curval = startVal;
while(len--)
{
*(cbuff++) = curval;
curval = (((curval + addVal) * multVal) ^ xorMask) & andMask;
}
}
static void generateRandomData(void* buff, size_t len)
{
unsigned char *cbuff = (unsigned char *)buff;
while(len--)
{
*(cbuff++) = (unsigned char)(((rand() * 255) / RAND_MAX));
}
}
static void generateGibberish(void* buff, size_t len)
{
static const unsigned char cb64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
unsigned char *cbuff = (unsigned char *)buff;
while(len--)
{
*(cbuff++) = cb64[((rand() * 64) / RAND_MAX)];
}
}
// --------------------------------------------------------------------------
// test class
// --------------------------------------------------------------------------
class Base64TestCase : public CppUnit::TestCase
{
public:
Base64TestCase() { }
private:
CPPUNIT_TEST_SUITE( Base64TestCase );
CPPUNIT_TEST( EncodeDecodeEmpty );
CPPUNIT_TEST( EncodeDecodeA );
CPPUNIT_TEST( EncodeDecodeAB );
CPPUNIT_TEST( EncodeDecodeABC );
CPPUNIT_TEST( EncodeDecodeABCD );
CPPUNIT_TEST( EncodeDecode0to255 );
CPPUNIT_TEST( EncodeDecodePatternA );
CPPUNIT_TEST( EncodeDecodePatternB );
CPPUNIT_TEST( EncodeDecodePatternC );
CPPUNIT_TEST( EncodeDecodeRandom );
CPPUNIT_TEST( DecodeInvalid );
CPPUNIT_TEST_SUITE_END();
void EncodeDecodeEmpty();
void EncodeDecodeA();
void EncodeDecodeAB();
void EncodeDecodeABC();
void EncodeDecodeABCD();
void EncodeDecode0to255();
void EncodeDecodePatternA();
void EncodeDecodePatternB();
void EncodeDecodePatternC();
void EncodeDecodeRandom();
void DecodeInvalid();
wxDECLARE_NO_COPY_CLASS(Base64TestCase);
};
// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( Base64TestCase );
// also include in its own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( Base64TestCase, "Base64TestCase" );
void Base64TestCase::EncodeDecodeEmpty()
{
char shouldBeEmpty[10];
shouldBeEmpty[0] = '\0';
size_t len = 10;
CPPUNIT_ASSERT(wxBase64Encode(shouldBeEmpty, len, "", 0) != wxCONV_FAILED);
CPPUNIT_ASSERT_EQUAL('\0', shouldBeEmpty[0]);
CPPUNIT_ASSERT(wxBase64Decode(shouldBeEmpty, len, "") != wxCONV_FAILED);
CPPUNIT_ASSERT_EQUAL('\0', shouldBeEmpty[0]);
wxMemoryBuffer bufmt;
wxString resultEmpty = wxBase64Encode(bufmt);
CPPUNIT_ASSERT(resultEmpty.empty());
bufmt = wxBase64Decode(resultEmpty);
CPPUNIT_ASSERT_EQUAL(0, bufmt.GetDataLen());
}
void Base64TestCase::EncodeDecodeA()
{
const wxString str = wxBase64Encode("A", 1);
CPPUNIT_ASSERT_EQUAL(wxString("QQ=="), str);
wxMemoryBuffer buf = wxBase64Decode(str);
CPPUNIT_ASSERT_EQUAL(1, buf.GetDataLen());
CPPUNIT_ASSERT_EQUAL('A', *(char *)buf.GetData());
char cbuf[10];
memset(cbuf, (char)-1, sizeof(cbuf));
CPPUNIT_ASSERT_EQUAL( 1, wxBase64Decode(cbuf, 1, str) );
CPPUNIT_ASSERT_EQUAL( 'A', cbuf[0] );
CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[1] );
CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[2] );
}
void Base64TestCase::EncodeDecodeAB()
{
const wxString str = wxBase64Encode("AB", 2);
CPPUNIT_ASSERT_EQUAL(wxString("QUI="), str);
wxMemoryBuffer buf = wxBase64Decode(str);
CPPUNIT_ASSERT_EQUAL(2, buf.GetDataLen());
CPPUNIT_ASSERT_EQUAL('A', buf[0]);
CPPUNIT_ASSERT_EQUAL('B', buf[1]);
char cbuf[10];
memset(cbuf, (char)-1, sizeof(cbuf));
CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, wxBase64Decode(cbuf, 1, str) );
CPPUNIT_ASSERT_EQUAL( 2, wxBase64Decode(cbuf, 2, str) );
CPPUNIT_ASSERT_EQUAL( 'A', cbuf[0] );
CPPUNIT_ASSERT_EQUAL( 'B', cbuf[1] );
CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[2] );
CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[3] );
}
void Base64TestCase::EncodeDecodeABC()
{
const wxString str = wxBase64Encode("ABC", 3);
CPPUNIT_ASSERT_EQUAL(wxString("QUJD"), str);
wxMemoryBuffer buf = wxBase64Decode(str);
CPPUNIT_ASSERT_EQUAL(3, buf.GetDataLen());
CPPUNIT_ASSERT_EQUAL('A', buf[0]);
CPPUNIT_ASSERT_EQUAL('B', buf[1]);
CPPUNIT_ASSERT_EQUAL('C', buf[2]);
char cbuf[10];
memset(cbuf, (char)-1, sizeof(cbuf));
CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, wxBase64Decode(cbuf, 2, str) );
CPPUNIT_ASSERT_EQUAL( 3, wxBase64Decode(cbuf, 3, str) );
CPPUNIT_ASSERT_EQUAL( 'A', cbuf[0] );
CPPUNIT_ASSERT_EQUAL( 'B', cbuf[1] );
CPPUNIT_ASSERT_EQUAL( 'C', cbuf[2] );
CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[3] );
CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[4] );
}
void Base64TestCase::EncodeDecodeABCD()
{
const wxString str = wxBase64Encode("ABCD", 4);
CPPUNIT_ASSERT_EQUAL(wxString("QUJDRA=="), str);
wxMemoryBuffer buf = wxBase64Decode(str);
CPPUNIT_ASSERT_EQUAL(4, buf.GetDataLen());
CPPUNIT_ASSERT_EQUAL('A', buf[0]);
CPPUNIT_ASSERT_EQUAL('B', buf[1]);
CPPUNIT_ASSERT_EQUAL('C', buf[2]);
CPPUNIT_ASSERT_EQUAL('D', buf[3]);
char cbuf[10];
memset(cbuf, (char)-1, sizeof(cbuf));
CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, wxBase64Decode(cbuf, 3, str) );
CPPUNIT_ASSERT_EQUAL( 4, wxBase64Decode(cbuf, 4, str) );
CPPUNIT_ASSERT_EQUAL( 'A', cbuf[0] );
CPPUNIT_ASSERT_EQUAL( 'B', cbuf[1] );
CPPUNIT_ASSERT_EQUAL( 'C', cbuf[2] );
CPPUNIT_ASSERT_EQUAL( 'D', cbuf[3] );
CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[4] );
CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[5] );
}
void Base64TestCase::EncodeDecode0to255()
{
unsigned char buff[256];
generatePatternedData(buff, 256, 0, 1);
wxString str = wxBase64Encode(buff, 256);
wxMemoryBuffer mbuff = wxBase64Decode(str);
CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
mbuff = wxBase64Decode(encoded0to255);
CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
}
void Base64TestCase::EncodeDecodePatternA()
{
unsigned char buff[350];
generatePatternedData(buff, 350, 24, 5, 3);
wxString str = wxBase64Encode(buff, 350);
wxMemoryBuffer mbuff = wxBase64Decode(str);
CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
}
void Base64TestCase::EncodeDecodePatternB()
{
unsigned char buff[350];
generatePatternedData(buff, 350, 0, 1, 1, 0xAA);
wxString str = wxBase64Encode(buff, 350);
wxMemoryBuffer mbuff = wxBase64Decode(str);
CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
}
void Base64TestCase::EncodeDecodePatternC()
{
unsigned char buff[11];
generatePatternedData(buff, 11, 1, 0, 2);
wxString str = wxBase64Encode(buff, 11);
wxMemoryBuffer mbuff = wxBase64Decode(str);
CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
}
void Base64TestCase::EncodeDecodeRandom()
{
size_t size = rand() * 3000 / RAND_MAX + 11;
unsigned char *buff = new unsigned char[size];
generateRandomData(buff, size);
wxString str = wxBase64Encode(buff, size);
wxMemoryBuffer mbuff = wxBase64Decode(str);
CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
generateGibberish(buff, size);
char *buff2 = new char[size];
size_t realsize = size;
CPPUNIT_ASSERT(wxBase64Decode(buff2, realsize, (char *)buff, size));
CPPUNIT_ASSERT(wxBase64Encode(buff2, size, buff2, realsize));
delete[] buff2;
delete[] buff;
}
void Base64TestCase::DecodeInvalid()
{
size_t rc, posErr;
rc = wxBase64Decode(nullptr, 0, "one two!", wxNO_LEN,
wxBase64DecodeMode_Strict, &posErr);
CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, rc);
CPPUNIT_ASSERT_EQUAL( 3, posErr );
rc = wxBase64Decode(nullptr, 0, "one two!", wxNO_LEN,
wxBase64DecodeMode_SkipWS, &posErr);
CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, rc);
CPPUNIT_ASSERT_EQUAL( 7, posErr );
rc = wxBase64Decode(nullptr, 0, "? QQ==", wxNO_LEN,
wxBase64DecodeMode_SkipWS, &posErr);
CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, rc);
CPPUNIT_ASSERT_EQUAL( 0, posErr );
const size_t POS_INVALID = (size_t)-1;
posErr = POS_INVALID;
rc = wxBase64Decode(nullptr, 0, " QQ==", wxNO_LEN,
wxBase64DecodeMode_SkipWS, &posErr);
CPPUNIT_ASSERT_EQUAL( 1, rc );
CPPUNIT_ASSERT_EQUAL( POS_INVALID, posErr );
rc = wxBase64Decode(nullptr, 0, "? QQ==", wxNO_LEN,
wxBase64DecodeMode_Relaxed, &posErr);
CPPUNIT_ASSERT_EQUAL( 1, rc );
CPPUNIT_ASSERT_EQUAL( POS_INVALID, posErr );
CPPUNIT_ASSERT( !wxBase64Decode("wxGetApp()").GetDataLen() );
}
#endif // wxUSE_BASE64
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