tests/strings/stdstrings.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/strings/stdstrings.cpp
   3 // Purpose:     wxString unit test
   4 // Author:      Vadim Zeitlin, Wlodzimierz ABX Skiba
   5 // Created:     2004-05-07
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2004 Vadim Zeitlin, Wlodzimierz Skiba
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 #include "testprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20 #ifndef WX_PRECOMP
  21     #include "wx/wx.h"
  22 #endif // WX_PRECOMP
  23
  24 // ----------------------------------------------------------------------------
  25 // test class
  26 // ----------------------------------------------------------------------------
  27
  28 class StdStringTestCase : public CppUnit::TestCase
  29 {
  30 public:
  31     StdStringTestCase();
  32
  33 private:
  34     CPPUNIT_TEST_SUITE( StdStringTestCase );
  35         CPPUNIT_TEST( StdConstructors );
  36         CPPUNIT_TEST( StdAppend );
  37         CPPUNIT_TEST( StdAssign );
  38         CPPUNIT_TEST( StdCompare );
  39         CPPUNIT_TEST( StdErase );
  40         CPPUNIT_TEST( StdFind );
  41         CPPUNIT_TEST( StdFindFirst );
  42         CPPUNIT_TEST( StdFindLast );
  43         CPPUNIT_TEST( StdInsert );
  44         CPPUNIT_TEST( StdReplace );
  45         CPPUNIT_TEST( StdRFind );
  46         CPPUNIT_TEST( StdResize );
  47         CPPUNIT_TEST( StdSubstr );
  48     CPPUNIT_TEST_SUITE_END();
  49
  50     void StdConstructors();
  51     void StdAppend();
  52     void StdAssign();
  53     void StdCompare();
  54     void StdErase();
  55     void StdFind();
  56     void StdFindFirst();
  57     void StdFindLast();
  58     void StdInsert();
  59     void StdReplace();
  60     void StdRFind();
  61     void StdResize();
  62     void StdSubstr();
  63
  64     DECLARE_NO_COPY_CLASS(StdStringTestCase)
  65 };
  66
  67 // register in the unnamed registry so that these tests are run by default
  68 CPPUNIT_TEST_SUITE_REGISTRATION( StdStringTestCase );
  69
  70 // also include in it's own registry so that these tests can be run alone
  71 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( StdStringTestCase, "StdStringTestCase" );
  72
  73 StdStringTestCase::StdStringTestCase()
  74 {
  75 }
  76
  77 void StdStringTestCase::StdConstructors()
  78 {
  79     wxString s1(_T("abcdefgh")),
  80              s2(_T("abcdefghijklm"), 8),
  81              s3(_T("abcdefghijklm")),
  82              s4(8, _T('a'));
  83     wxString s5(s1),
  84              s6(s3, 0, 8),
  85              s7(s3.begin(), s3.begin() + 8);
  86     wxString s8(s1, 4, 8);
  87
  88     CPPUNIT_ASSERT( s1 == _T("abcdefgh") );
  89     CPPUNIT_ASSERT( s2 == s1 );
  90     CPPUNIT_ASSERT( s4 == _T("aaaaaaaa") );
  91     CPPUNIT_ASSERT( s5 == _T("abcdefgh") );
  92     CPPUNIT_ASSERT( s6 == s1 );
  93     CPPUNIT_ASSERT( s7 == s1 );
  94     CPPUNIT_ASSERT( s8 == _T("efgh") );
  95 }
  96
  97 void StdStringTestCase::StdAppend()
  98 {
  99     wxString s1, s2, s3, s4, s5, s6, s7, s8;
 100
 101     s1 = s2 = s3 = s4 = s5 = s6 = _T("abc");
 102     s1.append(_T("def"));
 103     s2.append(_T("defgh"), 3);
 104     s3.append(wxString(_T("abcdef")), 3, 6);
 105     s4.append(s1);
 106     s5.append(3, _T('a'));
 107     s6.append(s1.begin() + 3, s1.end());
 108
 109     CPPUNIT_ASSERT( s1 == _T("abcdef") );
 110     CPPUNIT_ASSERT( s2 == _T("abcdef") );
 111     CPPUNIT_ASSERT( s3 == _T("abcdef") );
 112     CPPUNIT_ASSERT( s4 == _T("abcabcdef") );
 113     CPPUNIT_ASSERT( s5 == _T("abcaaa") );
 114     CPPUNIT_ASSERT( s6 == _T("abcdef") );
 115
 116     s7 = s8 = wxString(_T("null\0time"), 9);
 117
 118     s7.append(_T("def"));
 119     s8.append(_T("defgh"), 3);
 120
 121     CPPUNIT_ASSERT( s7 == wxString(_T("null\0timedef"), 12) );
 122     CPPUNIT_ASSERT( s8 == wxString(_T("null\0timedef"), 12) );
 123 }
 124
 125 void StdStringTestCase::StdAssign()
 126 {
 127     wxString s1, s2, s3, s4, s5, s6, s7, s8;
 128
 129     s1 = s2 = s3 = s4 = s5 = s6 = s7 = s8 = _T("abc");
 130     s1.assign(_T("def"));
 131     s2.assign(_T("defgh"), 3);
 132     s3.assign(wxString(_T("abcdef")), 3, 6);
 133     s4.assign(s1);
 134     s5.assign(3, _T('a'));
 135     s6.assign(s1.begin() + 1, s1.end());
 136
 137     CPPUNIT_ASSERT( s1 == _T("def") );
 138     CPPUNIT_ASSERT( s2 == _T("def") );
 139     CPPUNIT_ASSERT( s3 == _T("def") );
 140     CPPUNIT_ASSERT( s4 == _T("def") );
 141     CPPUNIT_ASSERT( s5 == _T("aaa") );
 142     CPPUNIT_ASSERT( s6 == _T("ef") );
 143 }
 144
 145 void StdStringTestCase::StdCompare()
 146 {
 147     wxString s1, s2, s3, s4, s5, s6, s7, s8;
 148
 149     s1 = _T("abcdefgh");
 150     s2 = _T("abcdefgh");
 151     s3 = _T("abc");
 152     s4 = _T("abcdefghi");
 153     s5 = _T("aaa");
 154     s6 = _T("zzz");
 155
 156     CPPUNIT_ASSERT( s1.compare(s2) == 0 );
 157     CPPUNIT_ASSERT( s1.compare(s3) > 0 );
 158     CPPUNIT_ASSERT( s1.compare(s4) < 0 );
 159     CPPUNIT_ASSERT( s1.compare(s5) > 0 );
 160     CPPUNIT_ASSERT( s1.compare(s6) < 0 );
 161     CPPUNIT_ASSERT( s1.compare(1, 12, s1) > 0);
 162     CPPUNIT_ASSERT( s1.compare(_T("abcdefgh")) == 0);
 163     CPPUNIT_ASSERT( s1.compare(1, 7, _T("bcdefgh")) == 0);
 164     CPPUNIT_ASSERT( s1.compare(1, 7, _T("bcdefgh"), 7) == 0);
 165 }
 166
 167 void StdStringTestCase::StdErase()
 168 {
 169     wxString s1, s2, s3, s4, s5, s6, s7;
 170
 171     s1 = _T("abcdefgh");
 172     s2 = _T("abcdefgh");
 173     s3 = _T("abc");
 174     s4 = _T("abcdefghi");
 175     s5 = _T("aaa");
 176     s6 = _T("zzz");
 177     s7 = _T("zabcdefg");
 178
 179     s1.erase(1, 1);
 180     s2.erase(4, 12);
 181     wxString::iterator it = s3.erase(s3.begin() + 1);
 182     wxString::iterator it2 = s4.erase(s4.begin() + 4, s4.begin() + 6);
 183     wxString::iterator it3 = s7.erase(s7.begin() + 4, s7.begin() + 8);
 184
 185     CPPUNIT_ASSERT( s1 == _T("acdefgh") );
 186     CPPUNIT_ASSERT( s2 == _T("abcd") );
 187     CPPUNIT_ASSERT( s3 == _T("ac") );
 188     CPPUNIT_ASSERT( s4 == _T("abcdghi") );
 189     CPPUNIT_ASSERT( s7 == _T("zabc") );
 190     CPPUNIT_ASSERT( *it == _T('c') );
 191     CPPUNIT_ASSERT( *it2 == _T('g') );
 192     CPPUNIT_ASSERT( it3 == s7.end() );
 193 }
 194
 195 void StdStringTestCase::StdFind()
 196 {
 197     //                0         1         2
 198     //                01234567890123456789012345
 199     wxString s1 = _T("abcdefgABCDEFGabcABCabcABC");
 200     wxString s2 = _T("gAB");
 201
 202     CPPUNIT_ASSERT( s1.find(_T('A')) == 7u );
 203     CPPUNIT_ASSERT( s1.find(_T('A'), 7) == 7u );
 204     CPPUNIT_ASSERT( s1.find(_T('Z')) == wxString::npos );
 205     CPPUNIT_ASSERT( s1.find(_T('C'), 22) == 25u );
 206
 207     CPPUNIT_ASSERT( s1.find(_T("gAB")) == 6u );
 208     CPPUNIT_ASSERT( s1.find(_T("gAB"), 7) == wxString::npos );
 209     CPPUNIT_ASSERT( s1.find(_T("gAB"), 6) == 6u );
 210
 211     CPPUNIT_ASSERT( s1.find(_T("gABZZZ"), 2, 3) == 6u );
 212     CPPUNIT_ASSERT( s1.find(_T("gABZZZ"), 7, 3) == wxString::npos );
 213
 214     CPPUNIT_ASSERT( s1.find(s2) == 6u );
 215     CPPUNIT_ASSERT( s1.find(s2, 7) == wxString::npos );
 216     CPPUNIT_ASSERT( s1.find(s2, 6) == 6u );
 217
 218     //                   0          1          2
 219     //                   0123456 78901234567 8901234567
 220     //wxString _s1 = _T("abcdefg\0ABCDEFGabc\0ABCabcABC");
 221     //wxString _s2 = _T("g\0AB");
 222     wxString _s1 = _T("abcdefgABCDEFGabcABCabcABC");
 223     wxString _s2 = _T("gAB");
 224
 225     _s1.insert(7, 1, '\0');
 226     _s1.insert(18, 1, '\0');
 227     _s2.insert(1, 1, '\0');
 228
 229     CPPUNIT_ASSERT( _s1.find(_T('A')) == 8u );
 230     CPPUNIT_ASSERT( _s1.find(_T('A'), 8) == 8u );
 231     CPPUNIT_ASSERT( _s1.find(_T('Z')) == wxString::npos );
 232     CPPUNIT_ASSERT( _s1.find(_T('C'), 22) == 27u );
 233
 234     CPPUNIT_ASSERT( _s1.find(_T("AB")) == 8u );
 235     CPPUNIT_ASSERT( _s1.find(_T("AB"), 26) == wxString::npos );
 236     CPPUNIT_ASSERT( _s1.find(_T("AB"), 23) == 25u );
 237
 238     CPPUNIT_ASSERT( _s1.find(_T("ABZZZ"), 2, 2) == 8u );
 239     CPPUNIT_ASSERT( _s1.find(_T("ABZZZ"), 26, 2) == wxString::npos );
 240
 241     CPPUNIT_ASSERT( _s1.find(_s2) == 6u );
 242     CPPUNIT_ASSERT( _s1.find(_s2, 7) == wxString::npos );
 243     CPPUNIT_ASSERT( _s1.find(_s2, 6) == 6u );
 244 }
 245
 246 void StdStringTestCase::StdFindFirst()
 247 {
 248     //                0         1         2         3
 249     //                01234567890123456789012345678901234
 250     wxString s1 = _T("aaaaaabcdefghlkjiaaaaaabcdbcdbcdbcd");
 251     wxString s2 = _T("aaaaaa");
 252
 253     CPPUNIT_ASSERT( s1.find_first_not_of(_T('a')) == 6u );
 254     CPPUNIT_ASSERT( s1.find_first_not_of(_T('a'), 7) == 7u );
 255     CPPUNIT_ASSERT( s2.find_first_not_of(_T('a')) == wxString::npos );
 256
 257     CPPUNIT_ASSERT( s1.find_first_not_of(_T("abde"), 4) == 7u );
 258     CPPUNIT_ASSERT( s1.find_first_not_of(_T("abde"), 7) == 7u );
 259     CPPUNIT_ASSERT( s1.find_first_not_of(_T("abcdefghijkl")) == wxString::npos );
 260
 261     CPPUNIT_ASSERT( s1.find_first_not_of(_T("abcdefghi"), 0, 4) == 9u );
 262
 263     CPPUNIT_ASSERT( s1.find_first_of(_T('c')) == 7u );
 264     CPPUNIT_ASSERT( s1.find_first_of(_T('v')) == wxString::npos );
 265     CPPUNIT_ASSERT( s1.find_first_of(_T('c'), 10) == 24u );
 266
 267     CPPUNIT_ASSERT( s1.find_first_of(_T("ijkl")) == 13u );
 268     CPPUNIT_ASSERT( s1.find_first_of(_T("ddcfg"), 17) == 24u );
 269     CPPUNIT_ASSERT( s1.find_first_of(_T("ddcfga"), 17, 5) == 24u );
 270 }
 271
 272 void StdStringTestCase::StdFindLast()
 273 {
 274     //                0         1         2         3
 275     //                01234567890123456789012345678901234
 276     wxString s1 = _T("aaaaaabcdefghlkjiaaaaaabcdbcdbcdbcd");
 277     wxString s2 = _T("aaaaaa");
 278
 279     CPPUNIT_ASSERT( s2.find_last_not_of(_T('a')) == wxString::npos );
 280     CPPUNIT_ASSERT( s1.find_last_not_of(_T('d')) == 33u );
 281     CPPUNIT_ASSERT( s1.find_last_not_of(_T('d'), 25) == 24u );
 282
 283     CPPUNIT_ASSERT( s1.find_last_not_of(_T("bcd")) == 22u );
 284     CPPUNIT_ASSERT( s1.find_last_not_of(_T("abc"), 24) == 16u );
 285
 286     CPPUNIT_ASSERT( s1.find_last_not_of(_T("abcdefghijklmnopqrstuv"), 24, 3) == 16u );
 287
 288     CPPUNIT_ASSERT( s2.find_last_of(_T('c')) == wxString::npos );
 289     CPPUNIT_ASSERT( s1.find_last_of(_T('a')) == 22u );
 290     CPPUNIT_ASSERT( s1.find_last_of(_T('b'), 24) == 23u );
 291
 292     CPPUNIT_ASSERT( s1.find_last_of(_T("ijklm")) == 16u );
 293     CPPUNIT_ASSERT( s1.find_last_of(_T("ijklma"), 33, 4) == 16u );
 294     CPPUNIT_ASSERT( s1.find_last_of(_T("a"), 17) == 17u );
 295
 296
 297
 298     //                  0          1          2         3
 299     //                  012345 67890123456789 01234567890123456
 300 //    wxString s1 = _T("aaaaaa\0bcdefghlkjiaa\0aaaabcdbcdbcdbcd");
 301 //    wxString s2 = _T("aaaaaa\0");
 302     s1.insert(6,1,'\0');
 303     s1.insert(20,1,'\0');
 304     s2.insert(6,1,'\0');
 305
 306     CPPUNIT_ASSERT( s2.find_last_not_of(_T('a')) == 6u );
 307     CPPUNIT_ASSERT( s1.find_last_not_of(_T('d')) == 35u );
 308     CPPUNIT_ASSERT( s1.find_last_not_of(_T('d'), 27) == 26u );
 309
 310     CPPUNIT_ASSERT( s1.find_last_not_of(_T("bcd")) == 24u );
 311     CPPUNIT_ASSERT( s1.find_last_not_of(_T("abc"), 26) == 20u );
 312
 313     CPPUNIT_ASSERT( s1.find_last_not_of(_T("abcdefghijklmnopqrstuv"), 26, 3) == 20u );
 314
 315     CPPUNIT_ASSERT( s2.find_last_of(_T('c')) == wxString::npos );
 316     CPPUNIT_ASSERT( s1.find_last_of(_T('a')) == 24u );
 317     CPPUNIT_ASSERT( s1.find_last_of(_T('b'), 26) == 25u );
 318
 319     CPPUNIT_ASSERT( s1.find_last_of(_T("ijklm")) == 17u );
 320     CPPUNIT_ASSERT( s1.find_last_of(_T("ijklma"), 35, 4) == 17u );
 321     CPPUNIT_ASSERT( s1.find_last_of(_T("a"), 18) == 18u );
 322 }
 323
 324 void StdStringTestCase::StdInsert()
 325 {
 326     wxString s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
 327
 328     s1 = s2 = s3 = s4 = s5 = s6 = s7 = s8 = _T("aaaa");
 329     s9 = s10 = _T("cdefg");
 330
 331     s1.insert(1, _T("cc") );
 332     s2.insert(2, _T("cdef"), 3);
 333     s3.insert(2, s10);
 334     s4.insert(2, s10, 3, 7);
 335     s5.insert(1, 2, _T('c'));
 336     s6.insert(s6.begin() + 3, _T('X'));
 337     s7.insert(s7.begin(), s9.begin(), s9.end() - 1);
 338     s8.insert(s8.begin(), 2, _T('c'));
 339
 340     CPPUNIT_ASSERT( s1 == _T("accaaa") );
 341     CPPUNIT_ASSERT( s2 == _T("aacdeaa") );
 342     CPPUNIT_ASSERT( s3 == _T("aacdefgaa") );
 343     CPPUNIT_ASSERT( s4 == _T("aafgaa") );
 344     CPPUNIT_ASSERT( s5 == _T("accaaa") );
 345     CPPUNIT_ASSERT( s6 == _T("aaaXa") );
 346     CPPUNIT_ASSERT( s7 == _T("cdefaaaa") );
 347     CPPUNIT_ASSERT( s8 == _T("ccaaaa") );
 348
 349     s1 = s2 = s3 = _T("aaaa");
 350     s1.insert(0, _T("ccc"), 2);
 351     s2.insert(4, _T("ccc"), 2);
 352
 353     CPPUNIT_ASSERT( s1 == _T("ccaaaa") );
 354     CPPUNIT_ASSERT( s2 == _T("aaaacc") );
 355 }
 356
 357 void StdStringTestCase::StdReplace()
 358 {
 359     wxString s1, s2, s3, s4, s5, s6, s7, s8, s9;
 360
 361     s1 = s2 = s3 = s4 = s5 = s6 = s7 = s8 = _T("QWERTYUIOP");
 362     s9 = _T("werty");
 363
 364     s1.replace(3, 4, _T("rtyu"));
 365     s1.replace(8, 7, _T("opopop"));
 366     s2.replace(10, 12, _T("WWWW"));
 367     s3.replace(1, 5, s9);
 368     s4.replace(1, 4, s9, 0, 4);
 369     s5.replace(1, 2, s9, 1, 12);
 370     s6.replace(0, 123, s9, 0, 123);
 371     s7.replace(2, 7, s9);
 372
 373     CPPUNIT_ASSERT( s1 == _T("QWErtyuIopopop") );
 374     CPPUNIT_ASSERT( s2 == _T("QWERTYUIOPWWWW") );
 375     CPPUNIT_ASSERT( s3 == _T("QwertyUIOP") );
 376     CPPUNIT_ASSERT( s4 == _T("QwertYUIOP") );
 377     CPPUNIT_ASSERT( s5 == _T("QertyRTYUIOP") );
 378     CPPUNIT_ASSERT( s6 == s9);
 379     CPPUNIT_ASSERT( s7 == _T("QWwertyP") );
 380 }
 381
 382 void StdStringTestCase::StdRFind()
 383 {
 384     //                0         1         2
 385     //                01234567890123456789012345
 386     wxString s1 = _T("abcdefgABCDEFGabcABCabcABC");
 387     wxString s2 = _T("gAB");
 388     wxString s3 = _T("ab");
 389
 390     CPPUNIT_ASSERT( s1.rfind(_T('A')) == 23u );
 391     CPPUNIT_ASSERT( s1.rfind(_T('A'), 7) == 7u );
 392     CPPUNIT_ASSERT( s1.rfind(_T('Z')) == wxString::npos );
 393     CPPUNIT_ASSERT( s1.rfind(_T('C'), 22) == 19u );
 394
 395     CPPUNIT_ASSERT( s1.rfind(_T("cAB")) == 22u );
 396     CPPUNIT_ASSERT( s1.rfind(_T("cAB"), 15) == wxString::npos );
 397     CPPUNIT_ASSERT( s1.rfind(_T("cAB"), 21) == 16u );
 398
 399     CPPUNIT_ASSERT( s1.rfind(_T("gABZZZ"), 7, 3) == 6u );
 400     CPPUNIT_ASSERT( s1.rfind(_T("gABZZZ"), 5, 3) == wxString::npos );
 401
 402     CPPUNIT_ASSERT( s1.rfind(s2) == 6u );
 403     CPPUNIT_ASSERT( s1.rfind(s2, 5) == wxString::npos );
 404     CPPUNIT_ASSERT( s1.rfind(s2, 6) == 6u );
 405     CPPUNIT_ASSERT( s1.rfind(s3, 1) == 0u );
 406
 407
 408     //                  0          1          2
 409     //                  01234 56789012 345678901234567
 410 //    wxString s1 = _T("abcde\0fgABCDE\0FGabcABCabcABC");
 411 //    wxString s2 = _T("gAB");
 412 //    wxString s3 = _T("ab");
 413
 414     s1.insert(5,1,'\0');
 415     s1.insert(13,1,'\0');
 416
 417     CPPUNIT_ASSERT( s1.rfind(_T('A')) == 25u );
 418     CPPUNIT_ASSERT( s1.rfind(_T('A'), 8) == 8u );
 419     CPPUNIT_ASSERT( s1.rfind(_T('Z')) == wxString::npos );
 420     CPPUNIT_ASSERT( s1.rfind(_T('C'), 22) == 21u );
 421
 422     CPPUNIT_ASSERT( s1.rfind(_T("cAB")) == 24u );
 423     CPPUNIT_ASSERT( s1.rfind(_T("cAB"), 15) == wxString::npos );
 424     CPPUNIT_ASSERT( s1.rfind(_T("cAB"), 21) == 18u );
 425
 426     CPPUNIT_ASSERT( s1.rfind(_T("gABZZZ"), 8, 3) == 7u );
 427     CPPUNIT_ASSERT( s1.rfind(_T("gABZZZ"), 5, 3) == wxString::npos );
 428 }
 429
 430 void StdStringTestCase::StdResize()
 431 {
 432     wxString s1, s2, s3, s4;
 433
 434     s1 = s2 = s3 = s4 = _T("abcABCdefDEF");
 435
 436     s1.resize( 12 );
 437     s2.resize( 10 );
 438     s3.resize( 14, _T(' ') );
 439     s4.resize( 14, _T('W') );
 440
 441     CPPUNIT_ASSERT( s1 == _T("abcABCdefDEF") );
 442     CPPUNIT_ASSERT( s2 == _T("abcABCdefD") );
 443     CPPUNIT_ASSERT( s3 == _T("abcABCdefDEF  ") );
 444     CPPUNIT_ASSERT( s4 == _T("abcABCdefDEFWW") );
 445 }
 446
 447 void StdStringTestCase::StdSubstr()
 448 {
 449     wxString s1 = _T("abcdefgABCDEFG");
 450
 451     CPPUNIT_ASSERT( s1.substr( 0, 14 ) == s1 );
 452     CPPUNIT_ASSERT( s1.substr( 1, 13 ) == _T("bcdefgABCDEFG") );
 453     CPPUNIT_ASSERT( s1.substr( 1, 20 ) == _T("bcdefgABCDEFG") );
 454     CPPUNIT_ASSERT( s1.substr( 14, 30 ) == _T("") );
 455
 456
 457 //                                                                  1
 458 //                                              012 34567 89012 3456
 459 //    wxString s1 = _T("abc\0defg\0ABCD\0EFG");
 460
 461     s1.insert(3,1,'\0');
 462     s1.insert(8,1,'\0');
 463     s1.insert(13,1,'\0');
 464
 465     wxString s2 = wxT("bcdefgABCDEFG");
 466     s2.insert(2,1,'\0');
 467     s2.insert(7,1,'\0');
 468     s2.insert(12,1,'\0');
 469
 470     CPPUNIT_ASSERT( s1.substr( 0, 17 ) == s1 );
 471     CPPUNIT_ASSERT( s1.substr( 1, 17 ) == s2 );
 472     CPPUNIT_ASSERT( s1.substr( 1, 20 ) == s2 );
 473     CPPUNIT_ASSERT( s1.substr( 17, 30 ) == _T("") );
 474 }
 475