tests/base64/base64.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/base64/base64.cpp
   3 // Purpose:     wxBase64Encode/Decode unit test
   4 // Author:      Charles Reimers
   5 // Created:     2007-06-22
   6 // RCS-ID:      $Id$
   7 ///////////////////////////////////////////////////////////////////////////////
   8
   9 // ----------------------------------------------------------------------------
  10 // headers
  11 // ----------------------------------------------------------------------------
  12
  13 #include "testprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/wx.h"
  21 #endif // WX_PRECOMP
  22
  23 #if wxUSE_BASE64
  24
  25 #include "wx/base64.h"
  26
  27 static const char encoded0to255[] =
  28     "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIj"
  29     "JCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZH"
  30     "SElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWpr"
  31     "bG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6P"
  32     "kJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq+wsbKz"
  33     "tLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX"
  34     "2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7"
  35     "/P3+/w==";
  36
  37 static void
  38 generatePatternedData(void* buff, size_t len, unsigned char startVal,
  39                       unsigned char addVal, unsigned char multVal = 1,
  40                       unsigned char xorMask = 0, unsigned char andMask = 255)
  41 {
  42     unsigned char *cbuff = (unsigned char *)buff;
  43     unsigned char curval = startVal;
  44     while(len--)
  45     {
  46         *(cbuff++) = curval;
  47         curval = (((curval + addVal) * multVal) ^ xorMask) & andMask;
  48     }
  49 }
  50
  51 static void generateRandomData(void* buff, size_t len)
  52 {
  53     unsigned char *cbuff = (unsigned char *)buff;
  54     while(len--)
  55     {
  56         *(cbuff++) = (unsigned char)(((rand() * 255) / RAND_MAX));
  57     }
  58 }
  59
  60 static void generateGibberish(void* buff, size_t len)
  61 {
  62     static const unsigned char cb64[] =
  63         "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  64
  65     unsigned char *cbuff = (unsigned char *)buff;
  66     while(len--)
  67     {
  68         *(cbuff++) = cb64[((rand() * 64) / RAND_MAX)];
  69     }
  70 }
  71
  72 // --------------------------------------------------------------------------
  73 // test class
  74 // --------------------------------------------------------------------------
  75
  76 class Base64TestCase : public CppUnit::TestCase
  77 {
  78 public:
  79     Base64TestCase() { }
  80
  81 private:
  82     CPPUNIT_TEST_SUITE( Base64TestCase );
  83         CPPUNIT_TEST( EncodeDecodeEmpty );
  84         CPPUNIT_TEST( EncodeDecodeA );
  85         CPPUNIT_TEST( EncodeDecodeAB );
  86         CPPUNIT_TEST( EncodeDecodeABC );
  87         CPPUNIT_TEST( EncodeDecodeABCD );
  88         CPPUNIT_TEST( EncodeDecode0to255 );
  89         CPPUNIT_TEST( EncodeDecodePatternA );
  90         CPPUNIT_TEST( EncodeDecodePatternB );
  91         CPPUNIT_TEST( EncodeDecodePatternC );
  92         CPPUNIT_TEST( EncodeDecodeRandom );
  93         CPPUNIT_TEST( DecodeInvalid );
  94     CPPUNIT_TEST_SUITE_END();
  95
  96     void EncodeDecodeEmpty();
  97     void EncodeDecodeA();
  98     void EncodeDecodeAB();
  99     void EncodeDecodeABC();
 100     void EncodeDecodeABCD();
 101     void EncodeDecode0to255();
 102     void EncodeDecodePatternA();
 103     void EncodeDecodePatternB();
 104     void EncodeDecodePatternC();
 105     void EncodeDecodeRandom();
 106     void DecodeInvalid();
 107
 108     DECLARE_NO_COPY_CLASS(Base64TestCase)
 109 };
 110
 111 // register in the unnamed registry so that these tests are run by default
 112 CPPUNIT_TEST_SUITE_REGISTRATION( Base64TestCase );
 113
 114 // also include in its own registry so that these tests can be run alone
 115 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( Base64TestCase, "Base64TestCase" );
 116
 117 void Base64TestCase::EncodeDecodeEmpty()
 118 {
 119     char shouldBeEmpty[10];
 120     shouldBeEmpty[0] = '\0';
 121     size_t len = 10;
 122
 123     CPPUNIT_ASSERT(wxBase64Encode(shouldBeEmpty, len, "", 0) != wxCONV_FAILED);
 124     CPPUNIT_ASSERT_EQUAL('\0', shouldBeEmpty[0]);
 125
 126     CPPUNIT_ASSERT(wxBase64Decode(shouldBeEmpty, len, "") != wxCONV_FAILED);
 127     CPPUNIT_ASSERT_EQUAL('\0', shouldBeEmpty[0]);
 128
 129     wxMemoryBuffer bufmt;
 130     wxString resultEmpty = wxBase64Encode(bufmt);
 131     CPPUNIT_ASSERT(resultEmpty.empty());
 132
 133     bufmt = wxBase64Decode(resultEmpty);
 134     CPPUNIT_ASSERT_EQUAL(0, bufmt.GetDataLen());
 135 }
 136
 137 void Base64TestCase::EncodeDecodeA()
 138 {
 139     const wxString str = wxBase64Encode("A", 1);
 140     CPPUNIT_ASSERT_EQUAL(wxString("QQ=="), str);
 141
 142     wxMemoryBuffer buf = wxBase64Decode(str);
 143     CPPUNIT_ASSERT_EQUAL(1, buf.GetDataLen());
 144     CPPUNIT_ASSERT_EQUAL('A', *(char *)buf.GetData());
 145
 146     char cbuf[10];
 147     memset(cbuf, (char)-1, sizeof(cbuf));
 148     CPPUNIT_ASSERT_EQUAL( 1, wxBase64Decode(cbuf, 1, str) );
 149     CPPUNIT_ASSERT_EQUAL( 'A', cbuf[0] );
 150     CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[1] );
 151     CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[2] );
 152 }
 153
 154 void Base64TestCase::EncodeDecodeAB()
 155 {
 156     const wxString str = wxBase64Encode("AB", 2);
 157     CPPUNIT_ASSERT_EQUAL(wxString("QUI="), str);
 158
 159     wxMemoryBuffer buf = wxBase64Decode(str);
 160     CPPUNIT_ASSERT_EQUAL(2, buf.GetDataLen());
 161     CPPUNIT_ASSERT_EQUAL('A', buf[0]);
 162     CPPUNIT_ASSERT_EQUAL('B', buf[1]);
 163
 164     char cbuf[10];
 165     memset(cbuf, (char)-1, sizeof(cbuf));
 166     CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, wxBase64Decode(cbuf, 1, str) );
 167     CPPUNIT_ASSERT_EQUAL( 2, wxBase64Decode(cbuf, 2, str) );
 168     CPPUNIT_ASSERT_EQUAL( 'A', cbuf[0] );
 169     CPPUNIT_ASSERT_EQUAL( 'B', cbuf[1] );
 170     CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[2] );
 171     CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[3] );
 172 }
 173
 174 void Base64TestCase::EncodeDecodeABC()
 175 {
 176     const wxString str = wxBase64Encode("ABC", 3);
 177     CPPUNIT_ASSERT_EQUAL(wxString("QUJD"), str);
 178
 179     wxMemoryBuffer buf = wxBase64Decode(str);
 180     CPPUNIT_ASSERT_EQUAL(3, buf.GetDataLen());
 181     CPPUNIT_ASSERT_EQUAL('A', buf[0]);
 182     CPPUNIT_ASSERT_EQUAL('B', buf[1]);
 183     CPPUNIT_ASSERT_EQUAL('C', buf[2]);
 184
 185     char cbuf[10];
 186     memset(cbuf, (char)-1, sizeof(cbuf));
 187     CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, wxBase64Decode(cbuf, 2, str) );
 188     CPPUNIT_ASSERT_EQUAL( 3, wxBase64Decode(cbuf, 3, str) );
 189     CPPUNIT_ASSERT_EQUAL( 'A', cbuf[0] );
 190     CPPUNIT_ASSERT_EQUAL( 'B', cbuf[1] );
 191     CPPUNIT_ASSERT_EQUAL( 'C', cbuf[2] );
 192     CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[3] );
 193     CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[4] );
 194 }
 195
 196 void Base64TestCase::EncodeDecodeABCD()
 197 {
 198     const wxString str = wxBase64Encode("ABCD", 4);
 199     CPPUNIT_ASSERT_EQUAL(wxString("QUJDRA=="), str);
 200
 201     wxMemoryBuffer buf = wxBase64Decode(str);
 202     CPPUNIT_ASSERT_EQUAL(4, buf.GetDataLen());
 203     CPPUNIT_ASSERT_EQUAL('A', buf[0]);
 204     CPPUNIT_ASSERT_EQUAL('B', buf[1]);
 205     CPPUNIT_ASSERT_EQUAL('C', buf[2]);
 206     CPPUNIT_ASSERT_EQUAL('D', buf[3]);
 207
 208     char cbuf[10];
 209     memset(cbuf, (char)-1, sizeof(cbuf));
 210     CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, wxBase64Decode(cbuf, 3, str) );
 211     CPPUNIT_ASSERT_EQUAL( 4, wxBase64Decode(cbuf, 4, str) );
 212     CPPUNIT_ASSERT_EQUAL( 'A', cbuf[0] );
 213     CPPUNIT_ASSERT_EQUAL( 'B', cbuf[1] );
 214     CPPUNIT_ASSERT_EQUAL( 'C', cbuf[2] );
 215     CPPUNIT_ASSERT_EQUAL( 'D', cbuf[3] );
 216     CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[4] );
 217     CPPUNIT_ASSERT_EQUAL( (char)-1, cbuf[5] );
 218 }
 219
 220 void Base64TestCase::EncodeDecode0to255()
 221 {
 222     unsigned char buff[256];
 223     generatePatternedData(buff, 256, 0, 1);
 224     wxString str = wxBase64Encode(buff, 256);
 225     wxMemoryBuffer mbuff = wxBase64Decode(str);
 226     CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
 227
 228     mbuff = wxBase64Decode(encoded0to255);
 229     CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
 230 }
 231
 232 void Base64TestCase::EncodeDecodePatternA()
 233 {
 234     unsigned char buff[350];
 235     generatePatternedData(buff, 350, 24, 5, 3);
 236     wxString str = wxBase64Encode(buff, 350);
 237     wxMemoryBuffer mbuff = wxBase64Decode(str);
 238     CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
 239 }
 240
 241 void Base64TestCase::EncodeDecodePatternB()
 242 {
 243     unsigned char buff[350];
 244     generatePatternedData(buff, 350, 0, 1, 1, 0xAA);
 245     wxString str = wxBase64Encode(buff, 350);
 246     wxMemoryBuffer mbuff = wxBase64Decode(str);
 247     CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
 248 }
 249
 250 void Base64TestCase::EncodeDecodePatternC()
 251 {
 252     unsigned char buff[11];
 253     generatePatternedData(buff, 11, 1, 0, 2);
 254     wxString str = wxBase64Encode(buff, 11);
 255     wxMemoryBuffer mbuff = wxBase64Decode(str);
 256     CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
 257 }
 258
 259 void Base64TestCase::EncodeDecodeRandom()
 260 {
 261     size_t size = rand() * 3000 / RAND_MAX + 11;
 262     unsigned char *buff = new unsigned char[size];
 263     generateRandomData(buff, size);
 264     wxString str = wxBase64Encode(buff, size);
 265     wxMemoryBuffer mbuff = wxBase64Decode(str);
 266     CPPUNIT_ASSERT(memcmp(mbuff.GetData(), buff, mbuff.GetDataLen()) == 0);
 267
 268     generateGibberish(buff, size);
 269     char *buff2 = new char[size];
 270     size_t realsize = size;
 271     CPPUNIT_ASSERT(wxBase64Decode(buff2, realsize, (char *)buff, size));
 272     CPPUNIT_ASSERT(wxBase64Encode(buff2, size, buff2, realsize));
 273 }
 274
 275 void Base64TestCase::DecodeInvalid()
 276 {
 277     size_t rc, posErr;
 278     rc = wxBase64Decode(NULL, 0, "one two!", wxNO_LEN,
 279                         wxBase64DecodeMode_Strict, &posErr);
 280     CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, rc);
 281     CPPUNIT_ASSERT_EQUAL( 3, posErr );
 282
 283     rc = wxBase64Decode(NULL, 0, "one two!", wxNO_LEN,
 284                         wxBase64DecodeMode_SkipWS, &posErr);
 285     CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, rc);
 286     CPPUNIT_ASSERT_EQUAL( 7, posErr );
 287
 288     rc = wxBase64Decode(NULL, 0, "? QQ==", wxNO_LEN,
 289                         wxBase64DecodeMode_SkipWS, &posErr);
 290     CPPUNIT_ASSERT_EQUAL( wxCONV_FAILED, rc);
 291     CPPUNIT_ASSERT_EQUAL( 0, posErr );
 292
 293     posErr = (size_t)-1;
 294     rc = wxBase64Decode(NULL, 0, " QQ==", wxNO_LEN,
 295                         wxBase64DecodeMode_SkipWS, &posErr);
 296     CPPUNIT_ASSERT_EQUAL( 1, rc );
 297     CPPUNIT_ASSERT_EQUAL( -1, posErr );
 298
 299     rc = wxBase64Decode(NULL, 0, "? QQ==", wxNO_LEN,
 300                         wxBase64DecodeMode_Relaxed, &posErr);
 301     CPPUNIT_ASSERT_EQUAL( 1, rc );
 302     CPPUNIT_ASSERT_EQUAL( -1, posErr );
 303
 304     CPPUNIT_ASSERT( !wxBase64Decode("wxGetApp()").GetDataLen() );
 305 }
 306
 307 #endif // wxUSE_BASE64