tests/strings/strings.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/strings/strings.cpp
   3 // Purpose:     wxString unit test
   4 // Author:      Vadim Zeitlin, Wlodzimierz ABX Skiba
   5 // Created:     2004-04-19
   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 StringTestCase : public CppUnit::TestCase
  29 {
  30 public:
  31     StringTestCase();
  32
  33 private:
  34     CPPUNIT_TEST_SUITE( StringTestCase );
  35         CPPUNIT_TEST( String );
  36         CPPUNIT_TEST( PChar );
  37         CPPUNIT_TEST( Format );
  38         CPPUNIT_TEST( Constructors );
  39         CPPUNIT_TEST( StaticConstructors );
  40         CPPUNIT_TEST( Extraction );
  41         CPPUNIT_TEST( Trim );
  42         CPPUNIT_TEST( Find );
  43         CPPUNIT_TEST( Replace );
  44         CPPUNIT_TEST( Match );
  45         CPPUNIT_TEST( CaseChanges );
  46         CPPUNIT_TEST( Compare );
  47         CPPUNIT_TEST( CompareNoCase );
  48         CPPUNIT_TEST( Contains );
  49         CPPUNIT_TEST( ToLong );
  50         CPPUNIT_TEST( ToULong );
  51 #ifdef wxLongLong_t
  52         CPPUNIT_TEST( ToLongLong );
  53         CPPUNIT_TEST( ToULongLong );
  54 #endif // wxLongLong_t
  55         CPPUNIT_TEST( ToDouble );
  56         CPPUNIT_TEST( FromDouble );
  57         CPPUNIT_TEST( StringBuf );
  58         CPPUNIT_TEST( UTF8Buf );
  59         CPPUNIT_TEST( CStrDataTernaryOperator );
  60         CPPUNIT_TEST( CStrDataOperators );
  61         CPPUNIT_TEST( CStrDataImplicitConversion );
  62         CPPUNIT_TEST( ExplicitConversion );
  63         CPPUNIT_TEST( IndexedAccess );
  64         CPPUNIT_TEST( BeforeAndAfter );
  65         CPPUNIT_TEST( ScopedBuffers );
  66     CPPUNIT_TEST_SUITE_END();
  67
  68     void String();
  69     void PChar();
  70     void Format();
  71     void Constructors();
  72     void StaticConstructors();
  73     void Extraction();
  74     void Trim();
  75     void Find();
  76     void Replace();
  77     void Match();
  78     void CaseChanges();
  79     void Compare();
  80     void CompareNoCase();
  81     void Contains();
  82     void ToLong();
  83     void ToULong();
  84 #ifdef wxLongLong_t
  85     void ToLongLong();
  86     void ToULongLong();
  87 #endif // wxLongLong_t
  88     void ToDouble();
  89     void FromDouble();
  90     void StringBuf();
  91     void UTF8Buf();
  92     void CStrDataTernaryOperator();
  93     void DoCStrDataTernaryOperator(bool cond);
  94     void CStrDataOperators();
  95     void CStrDataImplicitConversion();
  96     void ExplicitConversion();
  97     void IndexedAccess();
  98     void BeforeAndAfter();
  99     void ScopedBuffers();
 100
 101     DECLARE_NO_COPY_CLASS(StringTestCase)
 102 };
 103
 104 // register in the unnamed registry so that these tests are run by default
 105 CPPUNIT_TEST_SUITE_REGISTRATION( StringTestCase );
 106
 107 // also include in its own registry so that these tests can be run alone
 108 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( StringTestCase, "StringTestCase" );
 109
 110 StringTestCase::StringTestCase()
 111 {
 112 }
 113
 114 void StringTestCase::String()
 115 {
 116     wxString a, b, c;
 117
 118     a.reserve (128);
 119     b.reserve (128);
 120     c.reserve (128);
 121
 122     for (int i = 0; i < 2; ++i)
 123     {
 124         a = wxT("Hello");
 125         b = wxT(" world");
 126         c = wxT("! How'ya doin'?");
 127         a += b;
 128         a += c;
 129         c = wxT("Hello world! What's up?");
 130         CPPUNIT_ASSERT( c != a );
 131     }
 132 }
 133
 134 void StringTestCase::PChar()
 135 {
 136     wxChar a [128];
 137     wxChar b [128];
 138     wxChar c [128];
 139
 140     for (int i = 0; i < 2; ++i)
 141     {
 142         wxStrcpy (a, wxT("Hello"));
 143         wxStrcpy (b, wxT(" world"));
 144         wxStrcpy (c, wxT("! How'ya doin'?"));
 145         wxStrcat (a, b);
 146         wxStrcat (a, c);
 147         wxStrcpy (c, wxT("Hello world! What's up?"));
 148         CPPUNIT_ASSERT( wxStrcmp (c, a) != 0 );
 149     }
 150 }
 151
 152 void StringTestCase::Format()
 153 {
 154     wxString s1,s2;
 155     s1.Printf(wxT("%03d"), 18);
 156     CPPUNIT_ASSERT( s1 == wxString::Format(wxT("%03d"), 18) );
 157     s2.Printf(wxT("Number 18: %s\n"), s1.c_str());
 158     CPPUNIT_ASSERT( s2 == wxString::Format(wxT("Number 18: %s\n"), s1.c_str()) );
 159
 160     static const size_t lengths[] = { 1, 512, 1024, 1025, 2048, 4096, 4097 };
 161     for ( size_t n = 0; n < WXSIZEOF(lengths); n++ )
 162     {
 163         const size_t len = lengths[n];
 164
 165         wxString s(wxT('Z'), len);
 166         CPPUNIT_ASSERT_EQUAL( len, wxString::Format(wxT("%s"), s.c_str()).length());
 167     }
 168
 169
 170     CPPUNIT_ASSERT_EQUAL
 171     (
 172         "two one",
 173         wxString::Format(wxT("%2$s %1$s"), wxT("one"), wxT("two"))
 174     );
 175 }
 176
 177 void StringTestCase::Constructors()
 178 {
 179     CPPUNIT_ASSERT_EQUAL( "", wxString('Z', 0) );
 180     CPPUNIT_ASSERT_EQUAL( "Z", wxString('Z') );
 181     CPPUNIT_ASSERT_EQUAL( "ZZZZ", wxString('Z', 4) );
 182     CPPUNIT_ASSERT_EQUAL( "Hell", wxString("Hello", 4) );
 183     CPPUNIT_ASSERT_EQUAL( "Hello", wxString("Hello", 5) );
 184
 185 #if wxUSE_UNICODE
 186     CPPUNIT_ASSERT_EQUAL( L"", wxString(L'Z', 0) );
 187     CPPUNIT_ASSERT_EQUAL( L"Z", wxString(L'Z') );
 188     CPPUNIT_ASSERT_EQUAL( L"ZZZZ", wxString(L'Z', 4) );
 189     CPPUNIT_ASSERT_EQUAL( L"Hell", wxString(L"Hello", 4) );
 190     CPPUNIT_ASSERT_EQUAL( L"Hello", wxString(L"Hello", 5) );
 191 #endif // wxUSE_UNICODE
 192
 193     CPPUNIT_ASSERT_EQUAL( 0, wxString(wxString(), 17).length() );
 194
 195     static const char *s = "?really!";
 196     const char *start = wxStrchr(s, 'r');
 197     const char *end = wxStrchr(s, '!');
 198     CPPUNIT_ASSERT_EQUAL( "really", wxString(start, end) );
 199
 200     // test if creating string from NULL C pointer works:
 201     CPPUNIT_ASSERT_EQUAL( "", wxString((const char *)NULL) );
 202 }
 203
 204 void StringTestCase::StaticConstructors()
 205 {
 206     CPPUNIT_ASSERT_EQUAL( "", wxString::FromAscii("") );
 207     CPPUNIT_ASSERT_EQUAL( "", wxString::FromAscii("Hello", 0) );
 208     CPPUNIT_ASSERT_EQUAL( "Hell", wxString::FromAscii("Hello", 4) );
 209     CPPUNIT_ASSERT_EQUAL( "Hello", wxString::FromAscii("Hello", 5) );
 210     CPPUNIT_ASSERT_EQUAL( "Hello", wxString::FromAscii("Hello") );
 211
 212     // FIXME: this doesn't work currently but should!
 213     //CPPUNIT_ASSERT_EQUAL( 1, wxString::FromAscii("", 1).length() );
 214
 215
 216     CPPUNIT_ASSERT_EQUAL( "", wxString::FromUTF8("") );
 217     CPPUNIT_ASSERT_EQUAL( "", wxString::FromUTF8("Hello", 0) );
 218     CPPUNIT_ASSERT_EQUAL( "Hell", wxString::FromUTF8("Hello", 4) );
 219     CPPUNIT_ASSERT_EQUAL( "Hello", wxString::FromUTF8("Hello", 5) );
 220     CPPUNIT_ASSERT_EQUAL( "Hello", wxString::FromUTF8("Hello") );
 221
 222     //CPPUNIT_ASSERT_EQUAL( 1, wxString::FromUTF8("", 1).length() );
 223 }
 224
 225 void StringTestCase::Extraction()
 226 {
 227     wxString s(wxT("Hello, world!"));
 228
 229     CPPUNIT_ASSERT( wxStrcmp( s.c_str() , wxT("Hello, world!") ) == 0 );
 230     CPPUNIT_ASSERT( wxStrcmp( s.Left(5).c_str() , wxT("Hello") ) == 0 );
 231     CPPUNIT_ASSERT( wxStrcmp( s.Right(6).c_str() , wxT("world!") ) == 0 );
 232     CPPUNIT_ASSERT( wxStrcmp( s(3, 5).c_str() , wxT("lo, w") ) == 0 );
 233     CPPUNIT_ASSERT( wxStrcmp( s.Mid(3).c_str() , wxT("lo, world!") ) == 0 );
 234     CPPUNIT_ASSERT( wxStrcmp( s.substr(3, 5).c_str() , wxT("lo, w") ) == 0 );
 235     CPPUNIT_ASSERT( wxStrcmp( s.substr(3).c_str() , wxT("lo, world!") ) == 0 );
 236
 237 #if wxUSE_UNICODE
 238     static const char *germanUTF8 = "Oberfl\303\244che";
 239     wxString strUnicode(wxString::FromUTF8(germanUTF8));
 240
 241     CPPUNIT_ASSERT( strUnicode.Mid(0, 10) == strUnicode );
 242     CPPUNIT_ASSERT( strUnicode.Mid(7, 2) == "ch" );
 243 #endif // wxUSE_UNICODE
 244
 245     wxString rest;
 246
 247     #define TEST_STARTS_WITH(prefix, correct_rest, result)                    \
 248         CPPUNIT_ASSERT_EQUAL(result, s.StartsWith(prefix, &rest));            \
 249         if ( result )                                                         \
 250             CPPUNIT_ASSERT_EQUAL(correct_rest, rest)
 251
 252     TEST_STARTS_WITH( wxT("Hello"),           wxT(", world!"),      true  );
 253     TEST_STARTS_WITH( wxT("Hello, "),         wxT("world!"),        true  );
 254     TEST_STARTS_WITH( wxT("Hello, world!"),   wxT(""),              true  );
 255     TEST_STARTS_WITH( wxT("Hello, world!!!"), wxT(""),              false );
 256     TEST_STARTS_WITH( wxT(""),                wxT("Hello, world!"), true  );
 257     TEST_STARTS_WITH( wxT("Goodbye"),         wxT(""),              false );
 258     TEST_STARTS_WITH( wxT("Hi"),              wxT(""),              false );
 259
 260     #undef TEST_STARTS_WITH
 261
 262     rest = "Hello world";
 263     CPPUNIT_ASSERT( rest.StartsWith("Hello ", &rest) );
 264     CPPUNIT_ASSERT_EQUAL("world", rest);
 265
 266     #define TEST_ENDS_WITH(suffix, correct_rest, result)                      \
 267         CPPUNIT_ASSERT_EQUAL(result, s.EndsWith(suffix, &rest));              \
 268         if ( result )                                                         \
 269             CPPUNIT_ASSERT_EQUAL(correct_rest, rest)
 270
 271     TEST_ENDS_WITH( wxT(""),                 wxT("Hello, world!"), true  );
 272     TEST_ENDS_WITH( wxT("!"),                wxT("Hello, world"),  true  );
 273     TEST_ENDS_WITH( wxT(", world!"),         wxT("Hello"),         true  );
 274     TEST_ENDS_WITH( wxT("ello, world!"),     wxT("H"),             true  );
 275     TEST_ENDS_WITH( wxT("Hello, world!"),    wxT(""),              true  );
 276     TEST_ENDS_WITH( wxT("very long string"), wxT(""),              false );
 277     TEST_ENDS_WITH( wxT("?"),                wxT(""),              false );
 278     TEST_ENDS_WITH( wxT("Hello, world"),     wxT(""),              false );
 279     TEST_ENDS_WITH( wxT("Gello, world!"),    wxT(""),              false );
 280
 281     #undef TEST_ENDS_WITH
 282 }
 283
 284 void StringTestCase::Trim()
 285 {
 286     #define TEST_TRIM( str , dir , result )  \
 287         CPPUNIT_ASSERT( wxString(str).Trim(dir) == result )
 288
 289     TEST_TRIM( wxT("  Test  "),  true, wxT("  Test") );
 290     TEST_TRIM( wxT("    "),      true, wxT("")       );
 291     TEST_TRIM( wxT(" "),         true, wxT("")       );
 292     TEST_TRIM( wxT(""),          true, wxT("")       );
 293
 294     TEST_TRIM( wxT("  Test  "),  false, wxT("Test  ") );
 295     TEST_TRIM( wxT("    "),      false, wxT("")       );
 296     TEST_TRIM( wxT(" "),         false, wxT("")       );
 297     TEST_TRIM( wxT(""),          false, wxT("")       );
 298
 299     #undef TEST_TRIM
 300 }
 301
 302 void StringTestCase::Find()
 303 {
 304     #define TEST_FIND( str , start , result )  \
 305         CPPUNIT_ASSERT( wxString(str).find(wxT("ell"), start) == result );
 306
 307     TEST_FIND( wxT("Well, hello world"),  0, 1              );
 308     TEST_FIND( wxT("Well, hello world"),  6, 7              );
 309     TEST_FIND( wxT("Well, hello world"),  9, wxString::npos );
 310
 311     #undef TEST_FIND
 312 }
 313
 314 void StringTestCase::Replace()
 315 {
 316     #define TEST_REPLACE( original , pos , len , replacement , result ) \
 317         { \
 318             wxString s = original; \
 319             s.replace( pos , len , replacement ); \
 320             CPPUNIT_ASSERT_EQUAL( result, s ); \
 321         }
 322
 323     TEST_REPLACE( wxT("012-AWORD-XYZ"), 4, 5, wxT("BWORD"),  wxT("012-BWORD-XYZ") );
 324     TEST_REPLACE( wxT("increase"),      0, 2, wxT("de"),     wxT("decrease")      );
 325     TEST_REPLACE( wxT("wxWindow"),      8, 0, wxT("s"),      wxT("wxWindows")     );
 326     TEST_REPLACE( wxT("foobar"),        3, 0, wxT("-"),      wxT("foo-bar")       );
 327     TEST_REPLACE( wxT("barfoo"),        0, 6, wxT("foobar"), wxT("foobar")        );
 328
 329
 330     #define TEST_NULLCHARREPLACE( o , olen, pos , len , replacement , r, rlen ) \
 331         { \
 332             wxString s(o,olen); \
 333             s.replace( pos , len , replacement ); \
 334             CPPUNIT_ASSERT_EQUAL( wxString(r,rlen), s ); \
 335         }
 336
 337     TEST_NULLCHARREPLACE( wxT("null\0char"), 9, 5, 1, wxT("d"),
 338                           wxT("null\0dhar"), 9 );
 339
 340     #define TEST_WXREPLACE( o , olen, olds, news, all, r, rlen ) \
 341         { \
 342             wxString s(o,olen); \
 343             s.Replace( olds, news, all ); \
 344             CPPUNIT_ASSERT_EQUAL( wxString(r,rlen), s ); \
 345         }
 346
 347     TEST_WXREPLACE( wxT("null\0char"), 9, wxT("c"), wxT("de"), true,
 348                           wxT("null\0dehar"), 10 );
 349
 350     TEST_WXREPLACE( wxT("null\0dehar"), 10, wxT("de"), wxT("c"), true,
 351                           wxT("null\0char"), 9 );
 352
 353     TEST_WXREPLACE( "life", 4, "f", "", false, "lie", 3 );
 354     TEST_WXREPLACE( "life", 4, "f", "", true, "lie", 3 );
 355     TEST_WXREPLACE( "life", 4, "fe", "ve", true, "live", 4 );
 356     TEST_WXREPLACE( "xx", 2, "x", "yy", true, "yyyy", 4 );
 357     TEST_WXREPLACE( "xxx", 3, "xx", "z", true, "zx", 2 );
 358
 359     #undef TEST_WXREPLACE
 360     #undef TEST_NULLCHARREPLACE
 361     #undef TEST_REPLACE
 362 }
 363
 364 void StringTestCase::Match()
 365 {
 366     #define TEST_MATCH( s1 , s2 , result ) \
 367         CPPUNIT_ASSERT( wxString(s1).Matches(s2) == result )
 368
 369     TEST_MATCH( wxT("foobar"),    wxT("foo*"),   true  );
 370     TEST_MATCH( wxT("foobar"),    wxT("*oo*"),   true  );
 371     TEST_MATCH( wxT("foobar"),    wxT("*bar"),   true  );
 372     TEST_MATCH( wxT("foobar"),    wxT("??????"), true  );
 373     TEST_MATCH( wxT("foobar"),    wxT("f??b*"),  true  );
 374     TEST_MATCH( wxT("foobar"),    wxT("f?b*"),   false );
 375     TEST_MATCH( wxT("foobar"),    wxT("*goo*"),  false );
 376     TEST_MATCH( wxT("foobar"),    wxT("*foo"),   false );
 377     TEST_MATCH( wxT("foobarfoo"), wxT("*foo"),   true  );
 378     TEST_MATCH( wxT(""),          wxT("*"),      true  );
 379     TEST_MATCH( wxT(""),          wxT("?"),      false );
 380
 381     #undef TEST_MATCH
 382 }
 383
 384
 385 void StringTestCase::CaseChanges()
 386 {
 387     wxString s1(wxT("Hello!"));
 388     wxString s1u(s1);
 389     wxString s1l(s1);
 390     s1u.MakeUpper();
 391     s1l.MakeLower();
 392
 393     CPPUNIT_ASSERT_EQUAL( wxT("HELLO!"), s1u );
 394     CPPUNIT_ASSERT_EQUAL( wxT("hello!"), s1l );
 395
 396     wxString s2u, s2l;
 397     s2u.MakeUpper();
 398     s2l.MakeLower();
 399
 400     CPPUNIT_ASSERT_EQUAL( "", s2u );
 401     CPPUNIT_ASSERT_EQUAL( "", s2l );
 402
 403
 404     wxString s3("good bye");
 405     CPPUNIT_ASSERT_EQUAL( "Good bye", s3.Capitalize() );
 406     s3.MakeCapitalized();
 407     CPPUNIT_ASSERT_EQUAL( "Good bye", s3 );
 408
 409     CPPUNIT_ASSERT_EQUAL( "Abc", wxString("ABC").Capitalize() );
 410
 411     CPPUNIT_ASSERT_EQUAL( "", wxString().Capitalize() );
 412 }
 413
 414 void StringTestCase::Compare()
 415 {
 416     wxString s1 = wxT("AHH");
 417     wxString eq = wxT("AHH");
 418     wxString neq1 = wxT("HAH");
 419     wxString neq2 = wxT("AH");
 420     wxString neq3 = wxT("AHHH");
 421     wxString neq4 = wxT("AhH");
 422
 423     CPPUNIT_ASSERT( s1 == eq );
 424     CPPUNIT_ASSERT( s1 != neq1 );
 425     CPPUNIT_ASSERT( s1 != neq2 );
 426     CPPUNIT_ASSERT( s1 != neq3 );
 427     CPPUNIT_ASSERT( s1 != neq4 );
 428
 429     CPPUNIT_ASSERT( s1 == wxT("AHH") );
 430     CPPUNIT_ASSERT( s1 != wxT("no") );
 431     CPPUNIT_ASSERT( s1 < wxT("AZ") );
 432     CPPUNIT_ASSERT( s1 <= wxT("AZ") );
 433     CPPUNIT_ASSERT( s1 <= wxT("AHH") );
 434     CPPUNIT_ASSERT( s1 > wxT("AA") );
 435     CPPUNIT_ASSERT( s1 >= wxT("AA") );
 436     CPPUNIT_ASSERT( s1 >= wxT("AHH") );
 437
 438     // test comparison with C strings in Unicode build (must work in ANSI as
 439     // well, of course):
 440     CPPUNIT_ASSERT( s1 == "AHH" );
 441     CPPUNIT_ASSERT( s1 != "no" );
 442     CPPUNIT_ASSERT( s1 < "AZ" );
 443     CPPUNIT_ASSERT( s1 <= "AZ" );
 444     CPPUNIT_ASSERT( s1 <= "AHH" );
 445     CPPUNIT_ASSERT( s1 > "AA" );
 446     CPPUNIT_ASSERT( s1 >= "AA" );
 447     CPPUNIT_ASSERT( s1 >= "AHH" );
 448
 449 //    wxString _s1 = wxT("A\0HH");
 450 //    wxString _eq = wxT("A\0HH");
 451 //    wxString _neq1 = wxT("H\0AH");
 452 //    wxString _neq2 = wxT("A\0H");
 453 //    wxString _neq3 = wxT("A\0HHH");
 454 //    wxString _neq4 = wxT("A\0hH");
 455     s1.insert(1,1,'\0');
 456     eq.insert(1,1,'\0');
 457     neq1.insert(1,1,'\0');
 458     neq2.insert(1,1,'\0');
 459     neq3.insert(1,1,'\0');
 460     neq4.insert(1,1,'\0');
 461
 462     CPPUNIT_ASSERT( s1 == eq );
 463     CPPUNIT_ASSERT( s1 != neq1 );
 464     CPPUNIT_ASSERT( s1 != neq2 );
 465     CPPUNIT_ASSERT( s1 != neq3 );
 466     CPPUNIT_ASSERT( s1 != neq4 );
 467
 468     CPPUNIT_ASSERT( wxString("\n").Cmp(" ") < 0 );
 469     CPPUNIT_ASSERT( wxString("'").Cmp("!") > 0 );
 470     CPPUNIT_ASSERT( wxString("!").Cmp("z") < 0 );
 471 }
 472
 473 void StringTestCase::CompareNoCase()
 474 {
 475     wxString s1 = wxT("AHH");
 476     wxString eq = wxT("AHH");
 477     wxString eq2 = wxT("AhH");
 478     wxString eq3 = wxT("ahh");
 479     wxString neq = wxT("HAH");
 480     wxString neq2 = wxT("AH");
 481     wxString neq3 = wxT("AHHH");
 482
 483     #define CPPUNIT_CNCEQ_ASSERT(s1, s2) CPPUNIT_ASSERT( s1.CmpNoCase(s2) == 0)
 484     #define CPPUNIT_CNCNEQ_ASSERT(s1, s2) CPPUNIT_ASSERT( s1.CmpNoCase(s2) != 0)
 485
 486     CPPUNIT_CNCEQ_ASSERT( s1, eq );
 487     CPPUNIT_CNCEQ_ASSERT( s1, eq2 );
 488     CPPUNIT_CNCEQ_ASSERT( s1, eq3 );
 489
 490     CPPUNIT_CNCNEQ_ASSERT( s1, neq );
 491     CPPUNIT_CNCNEQ_ASSERT( s1, neq2 );
 492     CPPUNIT_CNCNEQ_ASSERT( s1, neq3 );
 493
 494
 495 //    wxString _s1 = wxT("A\0HH");
 496 //    wxString _eq = wxT("A\0HH");
 497 //    wxString _eq2 = wxT("A\0hH");
 498 //    wxString _eq3 = wxT("a\0hh");
 499 //    wxString _neq = wxT("H\0AH");
 500 //    wxString _neq2 = wxT("A\0H");
 501 //    wxString _neq3 = wxT("A\0HHH");
 502
 503     s1.insert(1,1,'\0');
 504     eq.insert(1,1,'\0');
 505     eq2.insert(1,1,'\0');
 506     eq3.insert(1,1,'\0');
 507     neq.insert(1,1,'\0');
 508     neq2.insert(1,1,'\0');
 509     neq3.insert(1,1,'\0');
 510
 511     CPPUNIT_CNCEQ_ASSERT( s1, eq );
 512     CPPUNIT_CNCEQ_ASSERT( s1, eq2 );
 513     CPPUNIT_CNCEQ_ASSERT( s1, eq3 );
 514
 515     CPPUNIT_CNCNEQ_ASSERT( s1, neq );
 516     CPPUNIT_CNCNEQ_ASSERT( s1, neq2 );
 517     CPPUNIT_CNCNEQ_ASSERT( s1, neq3 );
 518
 519     CPPUNIT_ASSERT( wxString("\n").CmpNoCase(" ") < 0 );
 520     CPPUNIT_ASSERT( wxString("'").CmpNoCase("!") > 0);
 521     CPPUNIT_ASSERT( wxString("!").Cmp("Z") < 0 );
 522 }
 523
 524 void StringTestCase::Contains()
 525 {
 526     static const struct ContainsData
 527     {
 528         const wxChar *hay;
 529         const wxChar *needle;
 530         bool contains;
 531     } containsData[] =
 532     {
 533         { wxT(""),       wxT(""),         true  },
 534         { wxT(""),       wxT("foo"),      false },
 535         { wxT("foo"),    wxT(""),         true  },
 536         { wxT("foo"),    wxT("f"),        true  },
 537         { wxT("foo"),    wxT("o"),        true  },
 538         { wxT("foo"),    wxT("oo"),       true  },
 539         { wxT("foo"),    wxT("ooo"),      false },
 540         { wxT("foo"),    wxT("oooo"),     false },
 541         { wxT("foo"),    wxT("fooo"),     false },
 542     };
 543
 544     for ( size_t n = 0; n < WXSIZEOF(containsData); n++ )
 545     {
 546         const ContainsData& cd = containsData[n];
 547         CPPUNIT_ASSERT_EQUAL( cd.contains, wxString(cd.hay).Contains(cd.needle) );
 548     }
 549 }
 550
 551 // flags used in ToLongData.flags
 552 enum
 553 {
 554     Number_Ok       = 0,
 555     Number_Invalid  = 1,
 556     Number_Unsigned = 2,    // if not specified, works for signed conversion
 557     Number_Signed   = 4,    // if not specified, works for unsigned
 558     Number_LongLong = 8,    // only for long long tests
 559     Number_Long     = 16    // only for long tests
 560 };
 561
 562 static const struct ToLongData
 563 {
 564     const wxChar *str;
 565 #ifdef wxLongLong_t
 566     wxLongLong_t value;
 567 #else
 568     long value;
 569 #endif // wxLongLong_t
 570     int flags;
 571
 572     long LValue() const { return value; }
 573     unsigned long ULValue() const { return value; }
 574 #ifdef wxLongLong_t
 575     wxLongLong_t LLValue() const { return value; }
 576     wxULongLong_t ULLValue() const { return (wxULongLong_t)value; }
 577 #endif // wxLongLong_t
 578
 579     bool IsOk() const { return !(flags & Number_Invalid); }
 580 } longData[] =
 581 {
 582     { wxT("1"), 1, Number_Ok },
 583     { wxT("0"), 0, Number_Ok },
 584     { wxT("a"), 0, Number_Invalid },
 585     { wxT("12345"), 12345, Number_Ok },
 586     { wxT("--1"), 0, Number_Invalid },
 587
 588     { wxT("-1"), -1, Number_Signed | Number_Long },
 589     // this is surprising but consistent with strtoul() behaviour
 590     { wxT("-1"), ULONG_MAX, Number_Unsigned | Number_Long },
 591
 592     // this must overflow, even with 64 bit long
 593     { wxT("922337203685477580711"), 0, Number_Invalid },
 594
 595 #ifdef wxLongLong_t
 596     { wxT("2147483648"), wxLL(2147483648), Number_LongLong },
 597     { wxT("-2147483648"), wxLL(-2147483648), Number_LongLong | Number_Signed },
 598     { wxT("9223372036854775808"), wxULL(9223372036854775808), Number_LongLong |
 599                                                              Number_Unsigned },
 600 #endif // wxLongLong_t
 601 };
 602
 603 void StringTestCase::ToLong()
 604 {
 605     long l;
 606     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 607     {
 608         const ToLongData& ld = longData[n];
 609
 610         if ( ld.flags & (Number_LongLong | Number_Unsigned) )
 611             continue;
 612
 613         // NOTE: unless you're using some exotic locale, ToCLong and ToLong
 614         //       should behave the same for our test data set:
 615
 616         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToCLong(&l) );
 617         if ( ld.IsOk() )
 618             CPPUNIT_ASSERT_EQUAL( ld.LValue(), l );
 619
 620         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToLong(&l) );
 621         if ( ld.IsOk() )
 622             CPPUNIT_ASSERT_EQUAL( ld.LValue(), l );
 623     }
 624
 625     // special case: check that the output is not modified if the parsing
 626     // failed completely
 627     l = 17;
 628     CPPUNIT_ASSERT( !wxString("foo").ToLong(&l) );
 629     CPPUNIT_ASSERT_EQUAL( 17, l );
 630
 631     // also check that it is modified if we did parse something successfully in
 632     // the beginning of the string
 633     CPPUNIT_ASSERT( !wxString("9 cats").ToLong(&l) );
 634     CPPUNIT_ASSERT_EQUAL( 9, l );
 635 }
 636
 637 void StringTestCase::ToULong()
 638 {
 639     unsigned long ul;
 640     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 641     {
 642         const ToLongData& ld = longData[n];
 643
 644         if ( ld.flags & (Number_LongLong | Number_Signed) )
 645             continue;
 646
 647         // NOTE: unless you're using some exotic locale, ToCLong and ToLong
 648         //       should behave the same for our test data set:
 649
 650         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToCULong(&ul) );
 651         if ( ld.IsOk() )
 652             CPPUNIT_ASSERT_EQUAL( ld.ULValue(), ul );
 653
 654         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToULong(&ul) );
 655         if ( ld.IsOk() )
 656             CPPUNIT_ASSERT_EQUAL( ld.ULValue(), ul );
 657     }
 658 }
 659
 660 #ifdef wxLongLong_t
 661
 662 void StringTestCase::ToLongLong()
 663 {
 664     wxLongLong_t l;
 665     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 666     {
 667         const ToLongData& ld = longData[n];
 668
 669         if ( ld.flags & (Number_Long | Number_Unsigned) )
 670             continue;
 671
 672         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToLongLong(&l) );
 673         if ( ld.IsOk() )
 674             CPPUNIT_ASSERT_EQUAL( ld.LLValue(), l );
 675     }
 676 }
 677
 678 void StringTestCase::ToULongLong()
 679 {
 680     wxULongLong_t ul;
 681     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 682     {
 683         const ToLongData& ld = longData[n];
 684
 685         if ( ld.flags & (Number_Long | Number_Signed) )
 686             continue;
 687
 688         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToULongLong(&ul) );
 689         if ( ld.IsOk() )
 690             CPPUNIT_ASSERT_EQUAL( ld.ULLValue(), ul );
 691     }
 692 }
 693
 694 #endif // wxLongLong_t
 695
 696 void StringTestCase::ToDouble()
 697 {
 698     double d;
 699     static const struct ToDoubleData
 700     {
 701         const wxChar *str;
 702         double value;
 703         bool ok;
 704     } doubleData[] =
 705     {
 706         { wxT("1"), 1, true },
 707         { wxT("1.23"), 1.23, true },
 708         { wxT(".1"), .1, true },
 709         { wxT("1."), 1, true },
 710         { wxT("1.."), 0, false },
 711         { wxT("0"), 0, true },
 712         { wxT("a"), 0, false },
 713         { wxT("12345"), 12345, true },
 714         { wxT("-1"), -1, true },
 715         { wxT("--1"), 0, false },
 716         { wxT("-3E-5"), -3E-5, true },
 717         { wxT("-3E-abcde5"), 0, false },
 718     };
 719
 720     // test ToCDouble() first:
 721
 722     size_t n;
 723     for ( n = 0; n < WXSIZEOF(doubleData); n++ )
 724     {
 725         const ToDoubleData& ld = doubleData[n];
 726         CPPUNIT_ASSERT_EQUAL( ld.ok, wxString(ld.str).ToCDouble(&d) );
 727         if ( ld.ok )
 728             CPPUNIT_ASSERT_EQUAL( ld.value, d );
 729     }
 730
 731
 732     // test ToDouble() now:
 733     // NOTE: for the test to be reliable, we need to set the locale explicitly
 734     //       so that we know the decimal point character to use
 735
 736     if (!wxLocale::IsAvailable(wxLANGUAGE_FRENCH))
 737         return;     // you should have french support installed to continue this test!
 738
 739     wxLocale locale;
 740
 741     // don't load default catalog, it may be unavailable:
 742     CPPUNIT_ASSERT( locale.Init(wxLANGUAGE_FRENCH, wxLOCALE_DONT_LOAD_DEFAULT) );
 743
 744     static const struct ToDoubleData doubleData2[] =
 745     {
 746         { wxT("1"), 1, true },
 747         { wxT("1,23"), 1.23, true },
 748         { wxT(",1"), .1, true },
 749         { wxT("1,"), 1, true },
 750         { wxT("1,,"), 0, false },
 751         { wxT("0"), 0, true },
 752         { wxT("a"), 0, false },
 753         { wxT("12345"), 12345, true },
 754         { wxT("-1"), -1, true },
 755         { wxT("--1"), 0, false },
 756         { wxT("-3E-5"), -3E-5, true },
 757         { wxT("-3E-abcde5"), 0, false },
 758     };
 759
 760     for ( n = 0; n < WXSIZEOF(doubleData2); n++ )
 761     {
 762         const ToDoubleData& ld = doubleData2[n];
 763         CPPUNIT_ASSERT_EQUAL( ld.ok, wxString(ld.str).ToDouble(&d) );
 764         if ( ld.ok )
 765             CPPUNIT_ASSERT_EQUAL( ld.value, d );
 766     }
 767 }
 768
 769 void StringTestCase::FromDouble()
 770 {
 771     static const struct FromDoubleTestData
 772     {
 773         double value;
 774         int prec;
 775         const char *str;
 776     } testData[] =
 777     {
 778         { 1.23,             -1, "1.23" },
 779         // NB: there are no standards about the minimum exponent width
 780         //     and newer MSVC versions use 3 digits as minimum exponent
 781         //     width while GNU libc uses 2 digits as minimum width...
 782 #ifdef wxUSING_VC_CRT_IO
 783         { -3e-10,           -1, "-3e-010" },
 784 #else
 785         { -3e-10,           -1, "-3e-10" },
 786 #endif
 787         { -0.45678,         -1, "-0.45678" },
 788         { 1.2345678,         0, "1" },
 789         { 1.2345678,         1, "1.2" },
 790         { 1.2345678,         2, "1.23" },
 791         { 1.2345678,         3, "1.235" },
 792     };
 793
 794     for ( unsigned n = 0; n < WXSIZEOF(testData); n++ )
 795     {
 796         const FromDoubleTestData& td = testData[n];
 797         CPPUNIT_ASSERT_EQUAL( td.str, wxString::FromCDouble(td.value, td.prec) );
 798     }
 799
 800     if ( !wxLocale::IsAvailable(wxLANGUAGE_FRENCH) )
 801         return;
 802
 803     wxLocale locale;
 804     CPPUNIT_ASSERT( locale.Init(wxLANGUAGE_FRENCH, wxLOCALE_DONT_LOAD_DEFAULT) );
 805
 806     for ( unsigned m = 0; m < WXSIZEOF(testData); m++ )
 807     {
 808         const FromDoubleTestData& td = testData[m];
 809
 810         wxString str(td.str);
 811         str.Replace(".", ",");
 812         CPPUNIT_ASSERT_EQUAL( str, wxString::FromDouble(td.value, td.prec) );
 813     }
 814 }
 815
 816 void StringTestCase::StringBuf()
 817 {
 818     // check that buffer can be used to write into the string
 819     wxString s;
 820     wxStrcpy(wxStringBuffer(s, 10), wxT("foo"));
 821
 822     CPPUNIT_ASSERT_EQUAL(3, s.length());
 823     CPPUNIT_ASSERT(wxT('f') == s[0u]);
 824     CPPUNIT_ASSERT(wxT('o') == s[1]);
 825     CPPUNIT_ASSERT(wxT('o') == s[2]);
 826
 827     {
 828         // also check that the buffer initially contains the original string
 829         // contents
 830         wxStringBuffer buf(s, 10);
 831         CPPUNIT_ASSERT_EQUAL( wxT('f'), buf[0] );
 832         CPPUNIT_ASSERT_EQUAL( wxT('o'), buf[1] );
 833         CPPUNIT_ASSERT_EQUAL( wxT('o'), buf[2] );
 834         CPPUNIT_ASSERT_EQUAL( wxT('\0'), buf[3] );
 835     }
 836
 837     {
 838         wxStringBufferLength buf(s, 10);
 839         CPPUNIT_ASSERT_EQUAL( wxT('f'), buf[0] );
 840         CPPUNIT_ASSERT_EQUAL( wxT('o'), buf[1] );
 841         CPPUNIT_ASSERT_EQUAL( wxT('o'), buf[2] );
 842         CPPUNIT_ASSERT_EQUAL( wxT('\0'), buf[3] );
 843
 844         // and check that it can be used to write only the specified number of
 845         // characters to the string
 846         wxStrcpy(buf, wxT("barrbaz"));
 847         buf.SetLength(4);
 848     }
 849
 850     CPPUNIT_ASSERT_EQUAL(4, s.length());
 851     CPPUNIT_ASSERT(wxT('b') == s[0u]);
 852     CPPUNIT_ASSERT(wxT('a') == s[1]);
 853     CPPUNIT_ASSERT(wxT('r') == s[2]);
 854     CPPUNIT_ASSERT(wxT('r') == s[3]);
 855
 856     // check that creating buffer of length smaller than string works, i.e. at
 857     // least doesn't crash (it would if we naively copied the entire original
 858     // string contents in the buffer)
 859     *wxStringBuffer(s, 1) = '!';
 860 }
 861
 862 void StringTestCase::UTF8Buf()
 863 {
 864 #if wxUSE_UNICODE
 865     // "czech" in Czech ("cestina"):
 866     static const char *textUTF8 = "\304\215e\305\241tina";
 867     static const wchar_t textUTF16[] = {0x10D, 0x65, 0x161, 0x74, 0x69, 0x6E, 0x61, 0};
 868
 869     wxString s;
 870     wxStrcpy(wxUTF8StringBuffer(s, 9), textUTF8);
 871     CPPUNIT_ASSERT(s == textUTF16);
 872
 873     {
 874         wxUTF8StringBufferLength buf(s, 20);
 875         wxStrcpy(buf, textUTF8);
 876         buf.SetLength(5);
 877     }
 878     CPPUNIT_ASSERT(s == wxString(textUTF16, 0, 3));
 879 #endif // wxUSE_UNICODE
 880 }
 881
 882
 883
 884 void StringTestCase::CStrDataTernaryOperator()
 885 {
 886     DoCStrDataTernaryOperator(true);
 887     DoCStrDataTernaryOperator(false);
 888 }
 889
 890 template<typename T> bool CheckStr(const wxString& expected, T s)
 891 {
 892     return expected == wxString(s);
 893 }
 894
 895 void StringTestCase::DoCStrDataTernaryOperator(bool cond)
 896 {
 897     // test compilation of wxCStrData when used with operator?: (the asserts
 898     // are not very important, we're testing if the code compiles at all):
 899
 900     wxString s("foo");
 901
 902     const wchar_t *wcStr = L"foo";
 903     CPPUNIT_ASSERT( CheckStr(s, (cond ? s.c_str() : wcStr)) );
 904     CPPUNIT_ASSERT( CheckStr(s, (cond ? s.c_str() : L"foo")) );
 905     CPPUNIT_ASSERT( CheckStr(s, (cond ? wcStr : s.c_str())) );
 906     CPPUNIT_ASSERT( CheckStr(s, (cond ? L"foo" : s.c_str())) );
 907
 908     const char *mbStr = "foo";
 909     CPPUNIT_ASSERT( CheckStr(s, (cond ? s.c_str() : mbStr)) );
 910     CPPUNIT_ASSERT( CheckStr(s, (cond ? s.c_str() : "foo")) );
 911     CPPUNIT_ASSERT( CheckStr(s, (cond ? mbStr : s.c_str())) );
 912     CPPUNIT_ASSERT( CheckStr(s, (cond ? "foo" : s.c_str())) );
 913
 914     wxString empty("");
 915     CPPUNIT_ASSERT( CheckStr(empty, (cond ? empty.c_str() : wxEmptyString)) );
 916     CPPUNIT_ASSERT( CheckStr(empty, (cond ? wxEmptyString : empty.c_str())) );
 917 }
 918
 919 void StringTestCase::CStrDataOperators()
 920 {
 921     wxString s("hello");
 922
 923     CPPUNIT_ASSERT( s.c_str()[0] == 'h' );
 924     CPPUNIT_ASSERT( s.c_str()[1] == 'e' );
 925
 926     // IMPORTANT: at least with the CRT coming with MSVC++ 2008 trying to access
 927     //            the final character results in an assert failure (with debug CRT)
 928     //CPPUNIT_ASSERT( s.c_str()[5] == '\0' );
 929
 930     CPPUNIT_ASSERT( *s.c_str() == 'h' );
 931     CPPUNIT_ASSERT( *(s.c_str() + 2) == 'l' );
 932     //CPPUNIT_ASSERT( *(s.c_str() + 5) == '\0' );
 933 }
 934
 935 bool CheckStrChar(const wxString& expected, char *s)
 936     { return CheckStr(expected, s); }
 937 bool CheckStrWChar(const wxString& expected, wchar_t *s)
 938     { return CheckStr(expected, s); }
 939 bool CheckStrConstChar(const wxString& expected, const char *s)
 940     { return CheckStr(expected, s); }
 941 bool CheckStrConstWChar(const wxString& expected, const wchar_t *s)
 942     { return CheckStr(expected, s); }
 943
 944 void StringTestCase::CStrDataImplicitConversion()
 945 {
 946     wxString s("foo");
 947
 948     CPPUNIT_ASSERT( CheckStrConstWChar(s, s.c_str()) );
 949     CPPUNIT_ASSERT( CheckStrConstChar(s, s.c_str()) );
 950
 951     // implicit conversion of wxString is not available in STL build
 952 #if !wxUSE_STL
 953     CPPUNIT_ASSERT( CheckStrConstWChar(s, s) );
 954     CPPUNIT_ASSERT( CheckStrConstChar(s, s) );
 955 #endif
 956 }
 957
 958 void StringTestCase::ExplicitConversion()
 959 {
 960     wxString s("foo");
 961
 962     CPPUNIT_ASSERT( CheckStr(s, s.mb_str()) );
 963     CPPUNIT_ASSERT( CheckStrConstChar(s, s.mb_str()) );
 964     CPPUNIT_ASSERT( CheckStrChar(s, s.char_str()) );
 965
 966     CPPUNIT_ASSERT( CheckStr(s, s.wc_str()) );
 967     CPPUNIT_ASSERT( CheckStrConstWChar(s, s.wc_str()) );
 968     CPPUNIT_ASSERT( CheckStrWChar(s, s.wchar_str()) );
 969 }
 970
 971 void StringTestCase::IndexedAccess()
 972 {
 973     wxString s("bar");
 974     CPPUNIT_ASSERT_EQUAL( 'r', (char)s[2] );
 975
 976     // this tests for a possible bug in UTF-8 based wxString implementation:
 977     // the 3rd character of the underlying byte string is going to change, but
 978     // the 3rd character of wxString should remain the same
 979     s[0] = L'\xe9';
 980     CPPUNIT_ASSERT_EQUAL( 'r', (char)s[2] );
 981 }
 982
 983 void StringTestCase::BeforeAndAfter()
 984 {
 985     // Construct a string with 2 equal signs in it by concatenating its three
 986     // parts: before the first "=", in between the two "="s and after the last
 987     // one. This allows to avoid duplicating the string contents (which has to
 988     // be different for Unicode and ANSI builds) in the tests below.
 989 #if wxUSE_UNICODE
 990     #define FIRST_PART L"letter"
 991     #define MIDDLE_PART L"\xe9;\xe7a"
 992     #define LAST_PART L"l\xe0"
 993 #else // !wxUSE_UNICODE
 994     #define FIRST_PART "letter"
 995     #define MIDDLE_PART "e;ca"
 996     #define LAST_PART "la"
 997 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 998
 999     const wxString s(FIRST_PART wxT("=") MIDDLE_PART wxT("=") LAST_PART);
1000
1001     wxString r;
1002
1003     CPPUNIT_ASSERT_EQUAL( FIRST_PART, s.BeforeFirst('=', &r) );
1004     CPPUNIT_ASSERT_EQUAL( MIDDLE_PART wxT("=") LAST_PART, r );
1005
1006     CPPUNIT_ASSERT_EQUAL( s, s.BeforeFirst('!', &r) );
1007     CPPUNIT_ASSERT_EQUAL( "", r );
1008
1009
1010     CPPUNIT_ASSERT_EQUAL( FIRST_PART wxT("=") MIDDLE_PART, s.BeforeLast('=', &r) );
1011     CPPUNIT_ASSERT_EQUAL( LAST_PART, r );
1012
1013     CPPUNIT_ASSERT_EQUAL( "", s.BeforeLast('!', &r) );
1014     CPPUNIT_ASSERT_EQUAL( s, r );
1015
1016
1017     CPPUNIT_ASSERT_EQUAL( MIDDLE_PART wxT("=") LAST_PART, s.AfterFirst('=') );
1018     CPPUNIT_ASSERT_EQUAL( "", s.AfterFirst('!') );
1019
1020
1021     CPPUNIT_ASSERT_EQUAL( LAST_PART, s.AfterLast('=') );
1022     CPPUNIT_ASSERT_EQUAL( s, s.AfterLast('!') );
1023
1024     #undef LAST_PART
1025     #undef MIDDLE_PART
1026     #undef FIRST_PART
1027 }
1028
1029 void StringTestCase::ScopedBuffers()
1030 {
1031     // wxString relies on efficient buffers, verify they work as they should
1032
1033     const char *literal = "Hello World!";
1034
1035     // non-owned buffer points to the string passed to it
1036     wxScopedCharBuffer sbuf = wxScopedCharBuffer::CreateNonOwned(literal);
1037     CPPUNIT_ASSERT( sbuf.data() == literal );
1038
1039     // a copy of scoped non-owned buffer still points to the same string
1040     wxScopedCharBuffer sbuf2(sbuf);
1041     CPPUNIT_ASSERT( sbuf.data() == sbuf2.data() );
1042
1043     // but assigning it to wxCharBuffer makes a full copy
1044     wxCharBuffer buf(sbuf);
1045     CPPUNIT_ASSERT( buf.data() != literal );
1046     CPPUNIT_ASSERT_EQUAL( literal, buf.data() );
1047
1048     wxCharBuffer buf2 = sbuf;
1049     CPPUNIT_ASSERT( buf2.data() != literal );
1050     CPPUNIT_ASSERT_EQUAL( literal, buf.data() );
1051
1052     // Check that extending the buffer keeps it NUL-terminated.
1053     size_t len = 10;
1054
1055     wxCharBuffer buf3(len);
1056     CPPUNIT_ASSERT_EQUAL('\0', buf3.data()[len]);
1057
1058     wxCharBuffer buf4;
1059     buf4.extend(len);
1060     CPPUNIT_ASSERT_EQUAL('\0', buf4.data()[len]);
1061
1062     wxCharBuffer buf5(5);
1063     buf5.extend(len);
1064     CPPUNIT_ASSERT_EQUAL('\0', buf5.data()[len]);
1065 }