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( StdRiter );
  48         CPPUNIT_TEST( StdSubstr );
  49     CPPUNIT_TEST_SUITE_END();
  50
  51     void StdConstructors();
  52     void StdAppend();
  53     void StdAssign();
  54     void StdCompare();
  55     void StdErase();
  56     void StdFind();
  57     void StdFindFirst();
  58     void StdFindLast();
  59     void StdInsert();
  60     void StdReplace();
  61     void StdRFind();
  62     void StdResize();
  63     void StdRiter();
  64     void StdSubstr();
  65
  66     DECLARE_NO_COPY_CLASS(StdStringTestCase)
  67 };
  68
  69 // register in the unnamed registry so that these tests are run by default
  70 CPPUNIT_TEST_SUITE_REGISTRATION( StdStringTestCase );
  71
  72 // also include in it's own registry so that these tests can be run alone
  73 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( StdStringTestCase, "StdStringTestCase" );
  74
  75 StdStringTestCase::StdStringTestCase()
  76 {
  77 }
  78
  79 void StdStringTestCase::StdConstructors()
  80 {
  81     wxString s1(_T("abcdefgh")),
  82              s2(_T("abcdefghijklm"), 8),
  83              s3(_T("abcdefghijklm")),
  84              s4(8, _T('a'));
  85     wxString s5(s1),
  86              s6(s3, 0, 8),
  87              s7(s3.begin(), s3.begin() + 8);
  88     wxString s8(s1, 4, 8);
  89
  90     CPPUNIT_ASSERT( s1 == _T("abcdefgh") );
  91     CPPUNIT_ASSERT( s2 == s1 );
  92     CPPUNIT_ASSERT( s4 == _T("aaaaaaaa") );
  93     CPPUNIT_ASSERT( s5 == _T("abcdefgh") );
  94     CPPUNIT_ASSERT( s6 == s1 );
  95     CPPUNIT_ASSERT( s7 == s1 );
  96     CPPUNIT_ASSERT( s8 == _T("efgh") );
  97 }
  98
  99 void StdStringTestCase::StdAppend()
 100 {
 101     wxString s1, s2, s3, s4, s5, s6, s7, s8;
 102
 103     s1 = s2 = s3 = s4 = s5 = s6 = s7 = _T("abc");
 104     s1.append(_T("def"));
 105     s2.append(_T("defgh"), 3);
 106     s3.append(wxString(_T("abcdef")), 3, 6);
 107     s4.append(s1);
 108     s5.append(3, _T('a'));
 109     s5.append(2, 'x');
 110     s5.append(1, (unsigned char)'y');
 111     s6.append(s1.begin() + 3, s1.end());
 112
 113     CPPUNIT_ASSERT( s1 == _T("abcdef") );
 114     CPPUNIT_ASSERT( s2 == _T("abcdef") );
 115     CPPUNIT_ASSERT( s3 == _T("abcdef") );
 116     CPPUNIT_ASSERT( s4 == _T("abcabcdef") );
 117     CPPUNIT_ASSERT( s5 == _T("abcaaaxxy") );
 118     CPPUNIT_ASSERT( s6 == _T("abcdef") );
 119
 120     s7 = s8 = wxString(_T("null\0time"), 9);
 121
 122     s7.append(_T("def"));
 123     s8.append(_T("defgh"), 3);
 124
 125     CPPUNIT_ASSERT( s7 == wxString(_T("null\0timedef"), 12) );
 126     CPPUNIT_ASSERT( s8 == wxString(_T("null\0timedef"), 12) );
 127 }
 128
 129 void StdStringTestCase::StdAssign()
 130 {
 131     wxString s1, s2, s3, s4, s5, s6, s7, s8;
 132
 133     s1 = s2 = s3 = s4 = s5 = s6 = s7 = s8 = _T("abc");
 134     s1.assign(_T("def"));
 135     s2.assign(_T("defgh"), 3);
 136     s3.assign(wxString(_T("abcdef")), 3, 6);
 137     s4.assign(s1);
 138     s5.assign(3, _T('a'));
 139     s6.assign(s1.begin() + 1, s1.end());
 140
 141     CPPUNIT_ASSERT( s1 == _T("def") );
 142     CPPUNIT_ASSERT( s2 == _T("def") );
 143     CPPUNIT_ASSERT( s3 == _T("def") );
 144     CPPUNIT_ASSERT( s4 == _T("def") );
 145     CPPUNIT_ASSERT( s5 == _T("aaa") );
 146     CPPUNIT_ASSERT( s6 == _T("ef") );
 147 }
 148
 149 void StdStringTestCase::StdCompare()
 150 {
 151     wxString s1, s2, s3, s4, s5, s6, s7, s8;
 152
 153     s1 = _T("abcdefgh");
 154     s2 = _T("abcdefgh");
 155     s3 = _T("abc");
 156     s4 = _T("abcdefghi");
 157     s5 = _T("aaa");
 158     s6 = _T("zzz");
 159
 160     CPPUNIT_ASSERT( s1.compare(s2) == 0 );
 161     CPPUNIT_ASSERT( s1.compare(s3) > 0 );
 162     CPPUNIT_ASSERT( s1.compare(s4) < 0 );
 163     CPPUNIT_ASSERT( s1.compare(s5) > 0 );
 164     CPPUNIT_ASSERT( s1.compare(s6) < 0 );
 165     CPPUNIT_ASSERT( s1.compare(1, 12, s1) > 0);
 166     CPPUNIT_ASSERT( s1.compare(_T("abcdefgh")) == 0);
 167     CPPUNIT_ASSERT( s1.compare(1, 7, _T("bcdefgh")) == 0);
 168     CPPUNIT_ASSERT( s1.compare(1, 7, _T("bcdefgh"), 7) == 0);
 169 }
 170
 171 void StdStringTestCase::StdErase()
 172 {
 173     wxString s1, s2, s3, s4, s5, s6, s7;
 174
 175     s1 = _T("abcdefgh");
 176     s2 = _T("abcdefgh");
 177     s3 = _T("abc");
 178     s4 = _T("abcdefghi");
 179     s5 = _T("aaa");
 180     s6 = _T("zzz");
 181     s7 = _T("zabcdefg");
 182
 183     s1.erase(1, 1);
 184     s2.erase(4, 12);
 185     wxString::iterator it = s3.erase(s3.begin() + 1);
 186     wxString::iterator it2 = s4.erase(s4.begin() + 4, s4.begin() + 6);
 187     wxString::iterator it3 = s7.erase(s7.begin() + 4, s7.begin() + 8);
 188
 189     CPPUNIT_ASSERT( s1 == _T("acdefgh") );
 190     CPPUNIT_ASSERT( s2 == _T("abcd") );
 191     CPPUNIT_ASSERT( s3 == _T("ac") );
 192     CPPUNIT_ASSERT( s4 == _T("abcdghi") );
 193     CPPUNIT_ASSERT( s7 == _T("zabc") );
 194     CPPUNIT_ASSERT( *it == _T('c') );
 195     CPPUNIT_ASSERT( *it2 == _T('g') );
 196     CPPUNIT_ASSERT( it3 == s7.end() );
 197 }
 198
 199 void StdStringTestCase::StdFind()
 200 {
 201     //                0         1         2
 202     //                01234567890123456789012345
 203     wxString s1 = _T("abcdefgABCDEFGabcABCabcABC");
 204     wxString s2 = _T("gAB");
 205
 206     CPPUNIT_ASSERT( s1.find(_T('A')) == 7u );
 207     CPPUNIT_ASSERT( s1.find(_T('A'), 7) == 7u );
 208     CPPUNIT_ASSERT( s1.find(_T('Z')) == wxString::npos );
 209     CPPUNIT_ASSERT( s1.find(_T('C'), 22) == 25u );
 210
 211     CPPUNIT_ASSERT( s1.find(_T("gAB")) == 6u );
 212     CPPUNIT_ASSERT( s1.find(_T("gAB"), 7) == wxString::npos );
 213     CPPUNIT_ASSERT( s1.find(_T("gAB"), 6) == 6u );
 214
 215     CPPUNIT_ASSERT( s1.find(_T("gABZZZ"), 2, 3) == 6u );
 216     CPPUNIT_ASSERT( s1.find(_T("gABZZZ"), 7, 3) == wxString::npos );
 217
 218     CPPUNIT_ASSERT( s1.find(s2) == 6u );
 219     CPPUNIT_ASSERT( s1.find(s2, 7) == wxString::npos );
 220     CPPUNIT_ASSERT( s1.find(s2, 6) == 6u );
 221
 222     //                   0          1          2
 223     //                   0123456 78901234567 8901234567
 224     //wxString _s1 = _T("abcdefg\0ABCDEFGabc\0ABCabcABC");
 225     //wxString _s2 = _T("g\0AB");
 226     wxString _s1 = _T("abcdefgABCDEFGabcABCabcABC");
 227     wxString _s2 = _T("gAB");
 228
 229     _s1.insert(7, 1, '\0');
 230     _s1.insert(18, 1, '\0');
 231     _s2.insert(1, 1, '\0');
 232
 233     CPPUNIT_ASSERT( _s1.find(_T('A')) == 8u );
 234     CPPUNIT_ASSERT( _s1.find(_T('A'), 8) == 8u );
 235     CPPUNIT_ASSERT( _s1.find(_T('Z')) == wxString::npos );
 236     CPPUNIT_ASSERT( _s1.find(_T('C'), 22) == 27u );
 237
 238     CPPUNIT_ASSERT( _s1.find(_T("AB")) == 8u );
 239     CPPUNIT_ASSERT( _s1.find(_T("AB"), 26) == wxString::npos );
 240     CPPUNIT_ASSERT( _s1.find(_T("AB"), 23) == 25u );
 241
 242     CPPUNIT_ASSERT( _s1.find(_T("ABZZZ"), 2, 2) == 8u );
 243     CPPUNIT_ASSERT( _s1.find(_T("ABZZZ"), 26, 2) == wxString::npos );
 244
 245     CPPUNIT_ASSERT( _s1.find(_s2) == 6u );
 246     CPPUNIT_ASSERT( _s1.find(_s2, 7) == wxString::npos );
 247     CPPUNIT_ASSERT( _s1.find(_s2, 6) == 6u );
 248 }
 249
 250 void StdStringTestCase::StdFindFirst()
 251 {
 252     //                0         1         2         3
 253     //                01234567890123456789012345678901234
 254     wxString s1 = _T("aaaaaabcdefghlkjiaaaaaabcdbcdbcdbcd");
 255     wxString s2 = _T("aaaaaa");
 256
 257     CPPUNIT_ASSERT( s1.find_first_not_of(_T('a')) == 6u );
 258     CPPUNIT_ASSERT( s1.find_first_not_of(_T('a'), 7) == 7u );
 259     CPPUNIT_ASSERT( s2.find_first_not_of(_T('a')) == wxString::npos );
 260
 261     CPPUNIT_ASSERT( s1.find_first_not_of(_T("abde"), 4) == 7u );
 262     CPPUNIT_ASSERT( s1.find_first_not_of(_T("abde"), 7) == 7u );
 263     CPPUNIT_ASSERT( s1.find_first_not_of(_T("abcdefghijkl")) == wxString::npos );
 264
 265     CPPUNIT_ASSERT( s1.find_first_not_of(_T("abcdefghi"), 0, 4) == 9u );
 266
 267     CPPUNIT_ASSERT( s1.find_first_of(_T('c')) == 7u );
 268     CPPUNIT_ASSERT( s1.find_first_of(_T('v')) == wxString::npos );
 269     CPPUNIT_ASSERT( s1.find_first_of(_T('c'), 10) == 24u );
 270
 271     CPPUNIT_ASSERT( s1.find_first_of(_T("ijkl")) == 13u );
 272     CPPUNIT_ASSERT( s1.find_first_of(_T("ddcfg"), 17) == 24u );
 273     CPPUNIT_ASSERT( s1.find_first_of(_T("ddcfga"), 17, 5) == 24u );
 274 }
 275
 276 void StdStringTestCase::StdFindLast()
 277 {
 278     //                0         1         2         3
 279     //                01234567890123456789012345678901234
 280     wxString s1 = _T("aaaaaabcdefghlkjiaaaaaabcdbcdbcdbcd");
 281     wxString s2 = _T("aaaaaa");
 282
 283     CPPUNIT_ASSERT( s2.find_last_not_of(_T('a')) == wxString::npos );
 284     CPPUNIT_ASSERT( s1.find_last_not_of(_T('d')) == 33u );
 285     CPPUNIT_ASSERT( s1.find_last_not_of(_T('d'), 25) == 24u );
 286
 287     CPPUNIT_ASSERT( s1.find_last_not_of(_T("bcd")) == 22u );
 288     CPPUNIT_ASSERT( s1.find_last_not_of(_T("abc"), 24) == 16u );
 289
 290     CPPUNIT_ASSERT( s1.find_last_not_of(_T("abcdefghijklmnopqrstuv"), 24, 3) == 16u );
 291
 292     CPPUNIT_ASSERT( s2.find_last_of(_T('c')) == wxString::npos );
 293     CPPUNIT_ASSERT( s1.find_last_of(_T('a')) == 22u );
 294     CPPUNIT_ASSERT( s1.find_last_of(_T('b'), 24) == 23u );
 295
 296     CPPUNIT_ASSERT( s1.find_last_of(_T("ijklm")) == 16u );
 297     CPPUNIT_ASSERT( s1.find_last_of(_T("ijklma"), 33, 4) == 16u );
 298     CPPUNIT_ASSERT( s1.find_last_of(_T("a"), 17) == 17u );
 299
 300
 301
 302     //                  0          1          2         3
 303     //                  012345 67890123456789 01234567890123456
 304 //    wxString s1 = _T("aaaaaa\0bcdefghlkjiaa\0aaaabcdbcdbcdbcd");
 305 //    wxString s2 = _T("aaaaaa\0");
 306     s1.insert(6,1,'\0');
 307     s1.insert(20,1,'\0');
 308     s2.insert(6,1,'\0');
 309
 310     CPPUNIT_ASSERT( s2.find_last_not_of(_T('a')) == 6u );
 311     CPPUNIT_ASSERT( s1.find_last_not_of(_T('d')) == 35u );
 312     CPPUNIT_ASSERT( s1.find_last_not_of(_T('d'), 27) == 26u );
 313
 314     CPPUNIT_ASSERT( s1.find_last_not_of(_T("bcd")) == 24u );
 315     CPPUNIT_ASSERT( s1.find_last_not_of(_T("abc"), 26) == 20u );
 316
 317     CPPUNIT_ASSERT( s1.find_last_not_of(_T("abcdefghijklmnopqrstuv"), 26, 3) == 20u );
 318
 319     CPPUNIT_ASSERT( s2.find_last_of(_T('c')) == wxString::npos );
 320     CPPUNIT_ASSERT( s1.find_last_of(_T('a')) == 24u );
 321     CPPUNIT_ASSERT( s1.find_last_of(_T('b'), 26) == 25u );
 322
 323     CPPUNIT_ASSERT( s1.find_last_of(_T("ijklm")) == 17u );
 324     CPPUNIT_ASSERT( s1.find_last_of(_T("ijklma"), 35, 4) == 17u );
 325     CPPUNIT_ASSERT( s1.find_last_of(_T("a"), 18) == 18u );
 326 }
 327
 328 void StdStringTestCase::StdInsert()
 329 {
 330     wxString s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
 331
 332     s1 = s2 = s3 = s4 = s5 = s6 = s7 = s8 = _T("aaaa");
 333     s9 = s10 = _T("cdefg");
 334
 335     s1.insert(1, _T("cc") );
 336     s2.insert(2, _T("cdef"), 3);
 337     s3.insert(2, s10);
 338     s4.insert(2, s10, 3, 7);
 339     s5.insert(1, 2, _T('c'));
 340     s6.insert(s6.begin() + 3, _T('X'));
 341     s7.insert(s7.begin(), s9.begin(), s9.end() - 1);
 342     s8.insert(s8.begin(), 2, _T('c'));
 343
 344     CPPUNIT_ASSERT( s1 == _T("accaaa") );
 345     CPPUNIT_ASSERT( s2 == _T("aacdeaa") );
 346     CPPUNIT_ASSERT( s3 == _T("aacdefgaa") );
 347     CPPUNIT_ASSERT( s4 == _T("aafgaa") );
 348     CPPUNIT_ASSERT( s5 == _T("accaaa") );
 349     CPPUNIT_ASSERT( s6 == _T("aaaXa") );
 350     CPPUNIT_ASSERT( s7 == _T("cdefaaaa") );
 351     CPPUNIT_ASSERT( s8 == _T("ccaaaa") );
 352
 353     s1 = s2 = s3 = _T("aaaa");
 354     s1.insert(0, _T("ccc"), 2);
 355     s2.insert(4, _T("ccc"), 2);
 356
 357     CPPUNIT_ASSERT( s1 == _T("ccaaaa") );
 358     CPPUNIT_ASSERT( s2 == _T("aaaacc") );
 359 }
 360
 361 void StdStringTestCase::StdReplace()
 362 {
 363     wxString s1, s2, s3, s4, s5, s6, s7, s8, s9;
 364
 365     s1 = s2 = s3 = s4 = s5 = s6 = s7 = s8 = _T("QWERTYUIOP");
 366     s9 = _T("werty");
 367
 368     s1.replace(3, 4, _T("rtyu"));
 369     s1.replace(8, 7, _T("opopop"));
 370     s2.replace(10, 12, _T("WWWW"));
 371     s3.replace(1, 5, s9);
 372     s4.replace(1, 4, s9, 0, 4);
 373     s5.replace(1, 2, s9, 1, 12);
 374     s6.replace(0, 123, s9, 0, 123);
 375     s7.replace(2, 7, s9);
 376
 377     CPPUNIT_ASSERT( s1 == _T("QWErtyuIopopop") );
 378     CPPUNIT_ASSERT( s2 == _T("QWERTYUIOPWWWW") );
 379     CPPUNIT_ASSERT( s3 == _T("QwertyUIOP") );
 380     CPPUNIT_ASSERT( s4 == _T("QwertYUIOP") );
 381     CPPUNIT_ASSERT( s5 == _T("QertyRTYUIOP") );
 382     CPPUNIT_ASSERT( s6 == s9);
 383     CPPUNIT_ASSERT( s7 == _T("QWwertyP") );
 384 }
 385
 386 void StdStringTestCase::StdRFind()
 387 {
 388     //                0         1         2
 389     //                01234567890123456789012345
 390     wxString s1 = _T("abcdefgABCDEFGabcABCabcABC");
 391     wxString s2 = _T("gAB");
 392     wxString s3 = _T("ab");
 393
 394     CPPUNIT_ASSERT( s1.rfind(_T('A')) == 23u );
 395     CPPUNIT_ASSERT( s1.rfind(_T('A'), 7) == 7u );
 396     CPPUNIT_ASSERT( s1.rfind(_T('Z')) == wxString::npos );
 397     CPPUNIT_ASSERT( s1.rfind(_T('C'), 22) == 19u );
 398
 399     CPPUNIT_ASSERT( s1.rfind(_T("cAB")) == 22u );
 400     CPPUNIT_ASSERT( s1.rfind(_T("cAB"), 15) == wxString::npos );
 401     CPPUNIT_ASSERT( s1.rfind(_T("cAB"), 21) == 16u );
 402
 403     CPPUNIT_ASSERT( s1.rfind(_T("gABZZZ"), 7, 3) == 6u );
 404     CPPUNIT_ASSERT( s1.rfind(_T("gABZZZ"), 5, 3) == wxString::npos );
 405
 406     CPPUNIT_ASSERT( s1.rfind(s2) == 6u );
 407     CPPUNIT_ASSERT( s1.rfind(s2, 5) == wxString::npos );
 408     CPPUNIT_ASSERT( s1.rfind(s2, 6) == 6u );
 409     CPPUNIT_ASSERT( s1.rfind(s3, 1) == 0u );
 410
 411
 412     //                  0          1          2
 413     //                  01234 56789012 345678901234567
 414 //    wxString s1 = _T("abcde\0fgABCDE\0FGabcABCabcABC");
 415 //    wxString s2 = _T("gAB");
 416 //    wxString s3 = _T("ab");
 417
 418     s1.insert(5,1,'\0');
 419     s1.insert(13,1,'\0');
 420
 421     CPPUNIT_ASSERT( s1.rfind(_T('A')) == 25u );
 422     CPPUNIT_ASSERT( s1.rfind(_T('A'), 8) == 8u );
 423     CPPUNIT_ASSERT( s1.rfind(_T('Z')) == wxString::npos );
 424     CPPUNIT_ASSERT( s1.rfind(_T('C'), 22) == 21u );
 425
 426     CPPUNIT_ASSERT( s1.rfind(_T("cAB")) == 24u );
 427     CPPUNIT_ASSERT( s1.rfind(_T("cAB"), 15) == wxString::npos );
 428     CPPUNIT_ASSERT( s1.rfind(_T("cAB"), 21) == 18u );
 429
 430     CPPUNIT_ASSERT( s1.rfind(_T("gABZZZ"), 8, 3) == 7u );
 431     CPPUNIT_ASSERT( s1.rfind(_T("gABZZZ"), 5, 3) == wxString::npos );
 432 }
 433
 434 void StdStringTestCase::StdResize()
 435 {
 436     wxString s1, s2, s3, s4;
 437
 438     s1 = s2 = s3 = s4 = _T("abcABCdefDEF");
 439
 440     s1.resize( 12 );
 441     s2.resize( 10 );
 442     s3.resize( 14, _T(' ') );
 443     s4.resize( 14, _T('W') );
 444
 445     CPPUNIT_ASSERT( s1 == _T("abcABCdefDEF") );
 446     CPPUNIT_ASSERT( s2 == _T("abcABCdefD") );
 447     CPPUNIT_ASSERT( s3 == _T("abcABCdefDEF  ") );
 448     CPPUNIT_ASSERT( s4 == _T("abcABCdefDEFWW") );
 449 }
 450
 451 void StdStringTestCase::StdRiter()
 452 {
 453     const wxString s(_T("fozbar"));
 454
 455     wxString::const_reverse_iterator ri(s.rbegin());
 456     CPPUNIT_ASSERT( _T('r') == *ri );
 457     CPPUNIT_ASSERT( _T('a') == *++ri );
 458     CPPUNIT_ASSERT( _T('r') == *--ri );
 459
 460     ri = s.rend();
 461     ri--;
 462     CPPUNIT_ASSERT( _T('f') == *ri );
 463
 464     --ri;
 465     CPPUNIT_ASSERT( _T('o') == *ri );
 466
 467     wxString::const_iterator i = ri.base();
 468     CPPUNIT_ASSERT( _T('z') == *i );
 469 }
 470
 471 void StdStringTestCase::StdSubstr()
 472 {
 473     wxString s1 = _T("abcdefgABCDEFG");
 474
 475     CPPUNIT_ASSERT( s1.substr( 0, 14 ) == s1 );
 476     CPPUNIT_ASSERT( s1.substr( 1, 13 ) == _T("bcdefgABCDEFG") );
 477     CPPUNIT_ASSERT( s1.substr( 1, 20 ) == _T("bcdefgABCDEFG") );
 478     CPPUNIT_ASSERT( s1.substr( 14, 30 ) == _T("") );
 479
 480     s1.insert(3,1,'\0');
 481     s1.insert(8,1,'\0');
 482     s1.insert(13,1,'\0');
 483
 484     wxString s2 = wxT("bcdefgABCDEFG");
 485     s2.insert(2,1,'\0');
 486     s2.insert(7,1,'\0');
 487     s2.insert(12,1,'\0');
 488
 489     CPPUNIT_ASSERT( s1.substr( 0, 17 ) == s1 );
 490     CPPUNIT_ASSERT( s1.substr( 1, 17 ) == s2 );
 491     CPPUNIT_ASSERT( s1.substr( 1, 20 ) == s2 );
 492     CPPUNIT_ASSERT( s1.substr( 17, 30 ) == _T("") );
 493 }
 494