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 #if wxUSE_UNICODE_UTF8
 196     // This string has 3 characters (<h>, <e'> and <l>), not 4 when using UTF-8
 197     // locale!
 198     if ( wxConvLibc.IsUTF8() )
 199     {
 200         wxString s3("h\xc3\xa9llo", 4);
 201         CPPUNIT_ASSERT_EQUAL( 3, s3.length() );
 202         CPPUNIT_ASSERT_EQUAL( 'l', (char)s3[2] );
 203     }
 204 #endif // wxUSE_UNICODE_UTF8
 205
 206
 207     static const char *s = "?really!";
 208     const char *start = wxStrchr(s, 'r');
 209     const char *end = wxStrchr(s, '!');
 210     CPPUNIT_ASSERT_EQUAL( "really", wxString(start, end) );
 211
 212     // test if creating string from NULL C pointer works:
 213     CPPUNIT_ASSERT_EQUAL( "", wxString((const char *)NULL) );
 214 }
 215
 216 void StringTestCase::StaticConstructors()
 217 {
 218     CPPUNIT_ASSERT_EQUAL( "", wxString::FromAscii("") );
 219     CPPUNIT_ASSERT_EQUAL( "", wxString::FromAscii("Hello", 0) );
 220     CPPUNIT_ASSERT_EQUAL( "Hell", wxString::FromAscii("Hello", 4) );
 221     CPPUNIT_ASSERT_EQUAL( "Hello", wxString::FromAscii("Hello", 5) );
 222     CPPUNIT_ASSERT_EQUAL( "Hello", wxString::FromAscii("Hello") );
 223
 224     // FIXME: this doesn't work currently but should!
 225     //CPPUNIT_ASSERT_EQUAL( 1, wxString::FromAscii("", 1).length() );
 226
 227
 228     CPPUNIT_ASSERT_EQUAL( "", wxString::FromUTF8("") );
 229     CPPUNIT_ASSERT_EQUAL( "", wxString::FromUTF8("Hello", 0) );
 230     CPPUNIT_ASSERT_EQUAL( "Hell", wxString::FromUTF8("Hello", 4) );
 231     CPPUNIT_ASSERT_EQUAL( "Hello", wxString::FromUTF8("Hello", 5) );
 232     CPPUNIT_ASSERT_EQUAL( "Hello", wxString::FromUTF8("Hello") );
 233
 234     CPPUNIT_ASSERT_EQUAL( 2, wxString::FromUTF8("h\xc3\xa9llo", 3).length() );
 235
 236
 237     //CPPUNIT_ASSERT_EQUAL( 1, wxString::FromUTF8("", 1).length() );
 238 }
 239
 240 void StringTestCase::Extraction()
 241 {
 242     wxString s(wxT("Hello, world!"));
 243
 244     CPPUNIT_ASSERT( wxStrcmp( s.c_str() , wxT("Hello, world!") ) == 0 );
 245     CPPUNIT_ASSERT( wxStrcmp( s.Left(5).c_str() , wxT("Hello") ) == 0 );
 246     CPPUNIT_ASSERT( wxStrcmp( s.Right(6).c_str() , wxT("world!") ) == 0 );
 247     CPPUNIT_ASSERT( wxStrcmp( s(3, 5).c_str() , wxT("lo, w") ) == 0 );
 248     CPPUNIT_ASSERT( wxStrcmp( s.Mid(3).c_str() , wxT("lo, world!") ) == 0 );
 249     CPPUNIT_ASSERT( wxStrcmp( s.substr(3, 5).c_str() , wxT("lo, w") ) == 0 );
 250     CPPUNIT_ASSERT( wxStrcmp( s.substr(3).c_str() , wxT("lo, world!") ) == 0 );
 251
 252 #if wxUSE_UNICODE
 253     static const char *germanUTF8 = "Oberfl\303\244che";
 254     wxString strUnicode(wxString::FromUTF8(germanUTF8));
 255
 256     CPPUNIT_ASSERT( strUnicode.Mid(0, 10) == strUnicode );
 257     CPPUNIT_ASSERT( strUnicode.Mid(7, 2) == "ch" );
 258 #endif // wxUSE_UNICODE
 259
 260     wxString rest;
 261
 262     #define TEST_STARTS_WITH(prefix, correct_rest, result)                    \
 263         CPPUNIT_ASSERT_EQUAL(result, s.StartsWith(prefix, &rest));            \
 264         if ( result )                                                         \
 265             CPPUNIT_ASSERT_EQUAL(correct_rest, rest)
 266
 267     TEST_STARTS_WITH( wxT("Hello"),           wxT(", world!"),      true  );
 268     TEST_STARTS_WITH( wxT("Hello, "),         wxT("world!"),        true  );
 269     TEST_STARTS_WITH( wxT("Hello, world!"),   wxT(""),              true  );
 270     TEST_STARTS_WITH( wxT("Hello, world!!!"), wxT(""),              false );
 271     TEST_STARTS_WITH( wxT(""),                wxT("Hello, world!"), true  );
 272     TEST_STARTS_WITH( wxT("Goodbye"),         wxT(""),              false );
 273     TEST_STARTS_WITH( wxT("Hi"),              wxT(""),              false );
 274
 275     #undef TEST_STARTS_WITH
 276
 277     rest = "Hello world";
 278     CPPUNIT_ASSERT( rest.StartsWith("Hello ", &rest) );
 279     CPPUNIT_ASSERT_EQUAL("world", rest);
 280
 281     #define TEST_ENDS_WITH(suffix, correct_rest, result)                      \
 282         CPPUNIT_ASSERT_EQUAL(result, s.EndsWith(suffix, &rest));              \
 283         if ( result )                                                         \
 284             CPPUNIT_ASSERT_EQUAL(correct_rest, rest)
 285
 286     TEST_ENDS_WITH( wxT(""),                 wxT("Hello, world!"), true  );
 287     TEST_ENDS_WITH( wxT("!"),                wxT("Hello, world"),  true  );
 288     TEST_ENDS_WITH( wxT(", world!"),         wxT("Hello"),         true  );
 289     TEST_ENDS_WITH( wxT("ello, world!"),     wxT("H"),             true  );
 290     TEST_ENDS_WITH( wxT("Hello, world!"),    wxT(""),              true  );
 291     TEST_ENDS_WITH( wxT("very long string"), wxT(""),              false );
 292     TEST_ENDS_WITH( wxT("?"),                wxT(""),              false );
 293     TEST_ENDS_WITH( wxT("Hello, world"),     wxT(""),              false );
 294     TEST_ENDS_WITH( wxT("Gello, world!"),    wxT(""),              false );
 295
 296     #undef TEST_ENDS_WITH
 297 }
 298
 299 void StringTestCase::Trim()
 300 {
 301     #define TEST_TRIM( str , dir , result )  \
 302         CPPUNIT_ASSERT( wxString(str).Trim(dir) == result )
 303
 304     TEST_TRIM( wxT("  Test  "),  true, wxT("  Test") );
 305     TEST_TRIM( wxT("    "),      true, wxT("")       );
 306     TEST_TRIM( wxT(" "),         true, wxT("")       );
 307     TEST_TRIM( wxT(""),          true, wxT("")       );
 308
 309     TEST_TRIM( wxT("  Test  "),  false, wxT("Test  ") );
 310     TEST_TRIM( wxT("    "),      false, wxT("")       );
 311     TEST_TRIM( wxT(" "),         false, wxT("")       );
 312     TEST_TRIM( wxT(""),          false, wxT("")       );
 313
 314     #undef TEST_TRIM
 315 }
 316
 317 void StringTestCase::Find()
 318 {
 319     #define TEST_FIND( str , start , result )  \
 320         CPPUNIT_ASSERT( wxString(str).find(wxT("ell"), start) == result );
 321
 322     TEST_FIND( wxT("Well, hello world"),  0, 1              );
 323     TEST_FIND( wxT("Well, hello world"),  6, 7              );
 324     TEST_FIND( wxT("Well, hello world"),  9, wxString::npos );
 325
 326     #undef TEST_FIND
 327 }
 328
 329 void StringTestCase::Replace()
 330 {
 331     #define TEST_REPLACE( original , pos , len , replacement , result ) \
 332         { \
 333             wxString s = original; \
 334             s.replace( pos , len , replacement ); \
 335             CPPUNIT_ASSERT_EQUAL( result, s ); \
 336         }
 337
 338     TEST_REPLACE( wxT("012-AWORD-XYZ"), 4, 5, wxT("BWORD"),  wxT("012-BWORD-XYZ") );
 339     TEST_REPLACE( wxT("increase"),      0, 2, wxT("de"),     wxT("decrease")      );
 340     TEST_REPLACE( wxT("wxWindow"),      8, 0, wxT("s"),      wxT("wxWindows")     );
 341     TEST_REPLACE( wxT("foobar"),        3, 0, wxT("-"),      wxT("foo-bar")       );
 342     TEST_REPLACE( wxT("barfoo"),        0, 6, wxT("foobar"), wxT("foobar")        );
 343
 344
 345     #define TEST_NULLCHARREPLACE( o , olen, pos , len , replacement , r, rlen ) \
 346         { \
 347             wxString s(o,olen); \
 348             s.replace( pos , len , replacement ); \
 349             CPPUNIT_ASSERT_EQUAL( wxString(r,rlen), s ); \
 350         }
 351
 352     TEST_NULLCHARREPLACE( wxT("null\0char"), 9, 5, 1, wxT("d"),
 353                           wxT("null\0dhar"), 9 );
 354
 355     #define TEST_WXREPLACE( o , olen, olds, news, all, r, rlen ) \
 356         { \
 357             wxString s(o,olen); \
 358             s.Replace( olds, news, all ); \
 359             CPPUNIT_ASSERT_EQUAL( wxString(r,rlen), s ); \
 360         }
 361
 362     TEST_WXREPLACE( wxT("null\0char"), 9, wxT("c"), wxT("de"), true,
 363                           wxT("null\0dehar"), 10 );
 364
 365     TEST_WXREPLACE( wxT("null\0dehar"), 10, wxT("de"), wxT("c"), true,
 366                           wxT("null\0char"), 9 );
 367
 368     TEST_WXREPLACE( "life", 4, "f", "", false, "lie", 3 );
 369     TEST_WXREPLACE( "life", 4, "f", "", true, "lie", 3 );
 370     TEST_WXREPLACE( "life", 4, "fe", "ve", true, "live", 4 );
 371     TEST_WXREPLACE( "xx", 2, "x", "yy", true, "yyyy", 4 );
 372     TEST_WXREPLACE( "xxx", 3, "xx", "z", true, "zx", 2 );
 373
 374     #undef TEST_WXREPLACE
 375     #undef TEST_NULLCHARREPLACE
 376     #undef TEST_REPLACE
 377 }
 378
 379 void StringTestCase::Match()
 380 {
 381     #define TEST_MATCH( s1 , s2 , result ) \
 382         CPPUNIT_ASSERT( wxString(s1).Matches(s2) == result )
 383
 384     TEST_MATCH( wxT("foobar"),    wxT("foo*"),   true  );
 385     TEST_MATCH( wxT("foobar"),    wxT("*oo*"),   true  );
 386     TEST_MATCH( wxT("foobar"),    wxT("*bar"),   true  );
 387     TEST_MATCH( wxT("foobar"),    wxT("??????"), true  );
 388     TEST_MATCH( wxT("foobar"),    wxT("f??b*"),  true  );
 389     TEST_MATCH( wxT("foobar"),    wxT("f?b*"),   false );
 390     TEST_MATCH( wxT("foobar"),    wxT("*goo*"),  false );
 391     TEST_MATCH( wxT("foobar"),    wxT("*foo"),   false );
 392     TEST_MATCH( wxT("foobarfoo"), wxT("*foo"),   true  );
 393     TEST_MATCH( wxT(""),          wxT("*"),      true  );
 394     TEST_MATCH( wxT(""),          wxT("?"),      false );
 395
 396     #undef TEST_MATCH
 397 }
 398
 399
 400 void StringTestCase::CaseChanges()
 401 {
 402     wxString s1(wxT("Hello!"));
 403     wxString s1u(s1);
 404     wxString s1l(s1);
 405     s1u.MakeUpper();
 406     s1l.MakeLower();
 407
 408     CPPUNIT_ASSERT_EQUAL( wxT("HELLO!"), s1u );
 409     CPPUNIT_ASSERT_EQUAL( wxT("hello!"), s1l );
 410
 411     wxString s2u, s2l;
 412     s2u.MakeUpper();
 413     s2l.MakeLower();
 414
 415     CPPUNIT_ASSERT_EQUAL( "", s2u );
 416     CPPUNIT_ASSERT_EQUAL( "", s2l );
 417
 418
 419     wxString s3("good bye");
 420     CPPUNIT_ASSERT_EQUAL( "Good bye", s3.Capitalize() );
 421     s3.MakeCapitalized();
 422     CPPUNIT_ASSERT_EQUAL( "Good bye", s3 );
 423
 424     CPPUNIT_ASSERT_EQUAL( "Abc", wxString("ABC").Capitalize() );
 425
 426     CPPUNIT_ASSERT_EQUAL( "", wxString().Capitalize() );
 427 }
 428
 429 void StringTestCase::Compare()
 430 {
 431     wxString s1 = wxT("AHH");
 432     wxString eq = wxT("AHH");
 433     wxString neq1 = wxT("HAH");
 434     wxString neq2 = wxT("AH");
 435     wxString neq3 = wxT("AHHH");
 436     wxString neq4 = wxT("AhH");
 437
 438     CPPUNIT_ASSERT( s1 == eq );
 439     CPPUNIT_ASSERT( s1 != neq1 );
 440     CPPUNIT_ASSERT( s1 != neq2 );
 441     CPPUNIT_ASSERT( s1 != neq3 );
 442     CPPUNIT_ASSERT( s1 != neq4 );
 443
 444     CPPUNIT_ASSERT( s1 == wxT("AHH") );
 445     CPPUNIT_ASSERT( s1 != wxT("no") );
 446     CPPUNIT_ASSERT( s1 < wxT("AZ") );
 447     CPPUNIT_ASSERT( s1 <= wxT("AZ") );
 448     CPPUNIT_ASSERT( s1 <= wxT("AHH") );
 449     CPPUNIT_ASSERT( s1 > wxT("AA") );
 450     CPPUNIT_ASSERT( s1 >= wxT("AA") );
 451     CPPUNIT_ASSERT( s1 >= wxT("AHH") );
 452
 453     // test comparison with C strings in Unicode build (must work in ANSI as
 454     // well, of course):
 455     CPPUNIT_ASSERT( s1 == "AHH" );
 456     CPPUNIT_ASSERT( s1 != "no" );
 457     CPPUNIT_ASSERT( s1 < "AZ" );
 458     CPPUNIT_ASSERT( s1 <= "AZ" );
 459     CPPUNIT_ASSERT( s1 <= "AHH" );
 460     CPPUNIT_ASSERT( s1 > "AA" );
 461     CPPUNIT_ASSERT( s1 >= "AA" );
 462     CPPUNIT_ASSERT( s1 >= "AHH" );
 463
 464 //    wxString _s1 = wxT("A\0HH");
 465 //    wxString _eq = wxT("A\0HH");
 466 //    wxString _neq1 = wxT("H\0AH");
 467 //    wxString _neq2 = wxT("A\0H");
 468 //    wxString _neq3 = wxT("A\0HHH");
 469 //    wxString _neq4 = wxT("A\0hH");
 470     s1.insert(1,1,'\0');
 471     eq.insert(1,1,'\0');
 472     neq1.insert(1,1,'\0');
 473     neq2.insert(1,1,'\0');
 474     neq3.insert(1,1,'\0');
 475     neq4.insert(1,1,'\0');
 476
 477     CPPUNIT_ASSERT( s1 == eq );
 478     CPPUNIT_ASSERT( s1 != neq1 );
 479     CPPUNIT_ASSERT( s1 != neq2 );
 480     CPPUNIT_ASSERT( s1 != neq3 );
 481     CPPUNIT_ASSERT( s1 != neq4 );
 482
 483     CPPUNIT_ASSERT( wxString("\n").Cmp(" ") < 0 );
 484     CPPUNIT_ASSERT( wxString("'").Cmp("!") > 0 );
 485     CPPUNIT_ASSERT( wxString("!").Cmp("z") < 0 );
 486 }
 487
 488 void StringTestCase::CompareNoCase()
 489 {
 490     wxString s1 = wxT("AHH");
 491     wxString eq = wxT("AHH");
 492     wxString eq2 = wxT("AhH");
 493     wxString eq3 = wxT("ahh");
 494     wxString neq = wxT("HAH");
 495     wxString neq2 = wxT("AH");
 496     wxString neq3 = wxT("AHHH");
 497
 498     #define CPPUNIT_CNCEQ_ASSERT(s1, s2) CPPUNIT_ASSERT( s1.CmpNoCase(s2) == 0)
 499     #define CPPUNIT_CNCNEQ_ASSERT(s1, s2) CPPUNIT_ASSERT( s1.CmpNoCase(s2) != 0)
 500
 501     CPPUNIT_CNCEQ_ASSERT( s1, eq );
 502     CPPUNIT_CNCEQ_ASSERT( s1, eq2 );
 503     CPPUNIT_CNCEQ_ASSERT( s1, eq3 );
 504
 505     CPPUNIT_CNCNEQ_ASSERT( s1, neq );
 506     CPPUNIT_CNCNEQ_ASSERT( s1, neq2 );
 507     CPPUNIT_CNCNEQ_ASSERT( s1, neq3 );
 508
 509
 510 //    wxString _s1 = wxT("A\0HH");
 511 //    wxString _eq = wxT("A\0HH");
 512 //    wxString _eq2 = wxT("A\0hH");
 513 //    wxString _eq3 = wxT("a\0hh");
 514 //    wxString _neq = wxT("H\0AH");
 515 //    wxString _neq2 = wxT("A\0H");
 516 //    wxString _neq3 = wxT("A\0HHH");
 517
 518     s1.insert(1,1,'\0');
 519     eq.insert(1,1,'\0');
 520     eq2.insert(1,1,'\0');
 521     eq3.insert(1,1,'\0');
 522     neq.insert(1,1,'\0');
 523     neq2.insert(1,1,'\0');
 524     neq3.insert(1,1,'\0');
 525
 526     CPPUNIT_CNCEQ_ASSERT( s1, eq );
 527     CPPUNIT_CNCEQ_ASSERT( s1, eq2 );
 528     CPPUNIT_CNCEQ_ASSERT( s1, eq3 );
 529
 530     CPPUNIT_CNCNEQ_ASSERT( s1, neq );
 531     CPPUNIT_CNCNEQ_ASSERT( s1, neq2 );
 532     CPPUNIT_CNCNEQ_ASSERT( s1, neq3 );
 533
 534     CPPUNIT_ASSERT( wxString("\n").CmpNoCase(" ") < 0 );
 535     CPPUNIT_ASSERT( wxString("'").CmpNoCase("!") > 0);
 536     CPPUNIT_ASSERT( wxString("!").Cmp("Z") < 0 );
 537 }
 538
 539 void StringTestCase::Contains()
 540 {
 541     static const struct ContainsData
 542     {
 543         const wxChar *hay;
 544         const wxChar *needle;
 545         bool contains;
 546     } containsData[] =
 547     {
 548         { wxT(""),       wxT(""),         true  },
 549         { wxT(""),       wxT("foo"),      false },
 550         { wxT("foo"),    wxT(""),         true  },
 551         { wxT("foo"),    wxT("f"),        true  },
 552         { wxT("foo"),    wxT("o"),        true  },
 553         { wxT("foo"),    wxT("oo"),       true  },
 554         { wxT("foo"),    wxT("ooo"),      false },
 555         { wxT("foo"),    wxT("oooo"),     false },
 556         { wxT("foo"),    wxT("fooo"),     false },
 557     };
 558
 559     for ( size_t n = 0; n < WXSIZEOF(containsData); n++ )
 560     {
 561         const ContainsData& cd = containsData[n];
 562         CPPUNIT_ASSERT_EQUAL( cd.contains, wxString(cd.hay).Contains(cd.needle) );
 563     }
 564 }
 565
 566 // flags used in ToLongData.flags
 567 enum
 568 {
 569     Number_Ok       = 0,
 570     Number_Invalid  = 1,
 571     Number_Unsigned = 2,    // if not specified, works for signed conversion
 572     Number_Signed   = 4,    // if not specified, works for unsigned
 573     Number_LongLong = 8,    // only for long long tests
 574     Number_Long     = 16    // only for long tests
 575 };
 576
 577 static const struct ToLongData
 578 {
 579     const wxChar *str;
 580 #ifdef wxLongLong_t
 581     wxLongLong_t value;
 582 #else
 583     long value;
 584 #endif // wxLongLong_t
 585     int flags;
 586
 587     long LValue() const { return value; }
 588     unsigned long ULValue() const { return value; }
 589 #ifdef wxLongLong_t
 590     wxLongLong_t LLValue() const { return value; }
 591     wxULongLong_t ULLValue() const { return (wxULongLong_t)value; }
 592 #endif // wxLongLong_t
 593
 594     bool IsOk() const { return !(flags & Number_Invalid); }
 595 } longData[] =
 596 {
 597     { wxT("1"), 1, Number_Ok },
 598     { wxT("0"), 0, Number_Ok },
 599     { wxT("a"), 0, Number_Invalid },
 600     { wxT("12345"), 12345, Number_Ok },
 601     { wxT("--1"), 0, Number_Invalid },
 602
 603     { wxT("-1"), -1, Number_Signed | Number_Long },
 604     // this is surprising but consistent with strtoul() behaviour
 605     { wxT("-1"), ULONG_MAX, Number_Unsigned | Number_Long },
 606
 607     // this must overflow, even with 64 bit long
 608     { wxT("922337203685477580711"), 0, Number_Invalid },
 609
 610 #ifdef wxLongLong_t
 611     { wxT("2147483648"), wxLL(2147483648), Number_LongLong },
 612     { wxT("-2147483648"), wxLL(-2147483648), Number_LongLong | Number_Signed },
 613     { wxT("9223372036854775808"), wxULL(9223372036854775808), Number_LongLong |
 614                                                              Number_Unsigned },
 615 #endif // wxLongLong_t
 616 };
 617
 618 void StringTestCase::ToLong()
 619 {
 620     long l;
 621     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 622     {
 623         const ToLongData& ld = longData[n];
 624
 625         if ( ld.flags & (Number_LongLong | Number_Unsigned) )
 626             continue;
 627
 628         // NOTE: unless you're using some exotic locale, ToCLong and ToLong
 629         //       should behave the same for our test data set:
 630
 631         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToCLong(&l) );
 632         if ( ld.IsOk() )
 633             CPPUNIT_ASSERT_EQUAL( ld.LValue(), l );
 634
 635         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToLong(&l) );
 636         if ( ld.IsOk() )
 637             CPPUNIT_ASSERT_EQUAL( ld.LValue(), l );
 638     }
 639
 640     // special case: check that the output is not modified if the parsing
 641     // failed completely
 642     l = 17;
 643     CPPUNIT_ASSERT( !wxString("foo").ToLong(&l) );
 644     CPPUNIT_ASSERT_EQUAL( 17, l );
 645
 646     // also check that it is modified if we did parse something successfully in
 647     // the beginning of the string
 648     CPPUNIT_ASSERT( !wxString("9 cats").ToLong(&l) );
 649     CPPUNIT_ASSERT_EQUAL( 9, l );
 650 }
 651
 652 void StringTestCase::ToULong()
 653 {
 654     unsigned long ul;
 655     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 656     {
 657         const ToLongData& ld = longData[n];
 658
 659         if ( ld.flags & (Number_LongLong | Number_Signed) )
 660             continue;
 661
 662         // NOTE: unless you're using some exotic locale, ToCLong and ToLong
 663         //       should behave the same for our test data set:
 664
 665         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToCULong(&ul) );
 666         if ( ld.IsOk() )
 667             CPPUNIT_ASSERT_EQUAL( ld.ULValue(), ul );
 668
 669         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToULong(&ul) );
 670         if ( ld.IsOk() )
 671             CPPUNIT_ASSERT_EQUAL( ld.ULValue(), ul );
 672     }
 673 }
 674
 675 #ifdef wxLongLong_t
 676
 677 void StringTestCase::ToLongLong()
 678 {
 679     wxLongLong_t l;
 680     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 681     {
 682         const ToLongData& ld = longData[n];
 683
 684         if ( ld.flags & (Number_Long | Number_Unsigned) )
 685             continue;
 686
 687         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToLongLong(&l) );
 688         if ( ld.IsOk() )
 689             CPPUNIT_ASSERT_EQUAL( ld.LLValue(), l );
 690     }
 691 }
 692
 693 void StringTestCase::ToULongLong()
 694 {
 695     wxULongLong_t ul;
 696     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 697     {
 698         const ToLongData& ld = longData[n];
 699
 700         if ( ld.flags & (Number_Long | Number_Signed) )
 701             continue;
 702
 703         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToULongLong(&ul) );
 704         if ( ld.IsOk() )
 705             CPPUNIT_ASSERT_EQUAL( ld.ULLValue(), ul );
 706     }
 707 }
 708
 709 #endif // wxLongLong_t
 710
 711 void StringTestCase::ToDouble()
 712 {
 713     double d;
 714     static const struct ToDoubleData
 715     {
 716         const wxChar *str;
 717         double value;
 718         bool ok;
 719     } doubleData[] =
 720     {
 721         { wxT("1"), 1, true },
 722         { wxT("1.23"), 1.23, true },
 723         { wxT(".1"), .1, true },
 724         { wxT("1."), 1, true },
 725         { wxT("1.."), 0, false },
 726         { wxT("0"), 0, true },
 727         { wxT("a"), 0, false },
 728         { wxT("12345"), 12345, true },
 729         { wxT("-1"), -1, true },
 730         { wxT("--1"), 0, false },
 731         { wxT("-3E-5"), -3E-5, true },
 732         { wxT("-3E-abcde5"), 0, false },
 733     };
 734
 735     // test ToCDouble() first:
 736
 737     size_t n;
 738     for ( n = 0; n < WXSIZEOF(doubleData); n++ )
 739     {
 740         const ToDoubleData& ld = doubleData[n];
 741         CPPUNIT_ASSERT_EQUAL( ld.ok, wxString(ld.str).ToCDouble(&d) );
 742         if ( ld.ok )
 743             CPPUNIT_ASSERT_EQUAL( ld.value, d );
 744     }
 745
 746
 747     // test ToDouble() now:
 748     // NOTE: for the test to be reliable, we need to set the locale explicitly
 749     //       so that we know the decimal point character to use
 750
 751     if (!wxLocale::IsAvailable(wxLANGUAGE_FRENCH))
 752         return;     // you should have french support installed to continue this test!
 753
 754     wxLocale locale;
 755
 756     // don't load default catalog, it may be unavailable:
 757     CPPUNIT_ASSERT( locale.Init(wxLANGUAGE_FRENCH, wxLOCALE_DONT_LOAD_DEFAULT) );
 758
 759     static const struct ToDoubleData doubleData2[] =
 760     {
 761         { wxT("1"), 1, true },
 762         { wxT("1,23"), 1.23, true },
 763         { wxT(",1"), .1, true },
 764         { wxT("1,"), 1, true },
 765         { wxT("1,,"), 0, false },
 766         { wxT("0"), 0, true },
 767         { wxT("a"), 0, false },
 768         { wxT("12345"), 12345, true },
 769         { wxT("-1"), -1, true },
 770         { wxT("--1"), 0, false },
 771         { wxT("-3E-5"), -3E-5, true },
 772         { wxT("-3E-abcde5"), 0, false },
 773     };
 774
 775     for ( n = 0; n < WXSIZEOF(doubleData2); n++ )
 776     {
 777         const ToDoubleData& ld = doubleData2[n];
 778         CPPUNIT_ASSERT_EQUAL( ld.ok, wxString(ld.str).ToDouble(&d) );
 779         if ( ld.ok )
 780             CPPUNIT_ASSERT_EQUAL( ld.value, d );
 781     }
 782 }
 783
 784 void StringTestCase::FromDouble()
 785 {
 786     static const struct FromDoubleTestData
 787     {
 788         double value;
 789         int prec;
 790         const char *str;
 791     } testData[] =
 792     {
 793         { 1.23,             -1, "1.23" },
 794         // NB: there are no standards about the minimum exponent width
 795         //     and newer MSVC versions use 3 digits as minimum exponent
 796         //     width while GNU libc uses 2 digits as minimum width...
 797 #ifdef wxUSING_VC_CRT_IO
 798         { -3e-10,           -1, "-3e-010" },
 799 #else
 800         { -3e-10,           -1, "-3e-10" },
 801 #endif
 802         { -0.45678,         -1, "-0.45678" },
 803         { 1.2345678,         0, "1" },
 804         { 1.2345678,         1, "1.2" },
 805         { 1.2345678,         2, "1.23" },
 806         { 1.2345678,         3, "1.235" },
 807     };
 808
 809     for ( unsigned n = 0; n < WXSIZEOF(testData); n++ )
 810     {
 811         const FromDoubleTestData& td = testData[n];
 812         CPPUNIT_ASSERT_EQUAL( td.str, wxString::FromCDouble(td.value, td.prec) );
 813     }
 814
 815     if ( !wxLocale::IsAvailable(wxLANGUAGE_FRENCH) )
 816         return;
 817
 818     wxLocale locale;
 819     CPPUNIT_ASSERT( locale.Init(wxLANGUAGE_FRENCH, wxLOCALE_DONT_LOAD_DEFAULT) );
 820
 821     for ( unsigned m = 0; m < WXSIZEOF(testData); m++ )
 822     {
 823         const FromDoubleTestData& td = testData[m];
 824
 825         wxString str(td.str);
 826         str.Replace(".", ",");
 827         CPPUNIT_ASSERT_EQUAL( str, wxString::FromDouble(td.value, td.prec) );
 828     }
 829 }
 830
 831 void StringTestCase::StringBuf()
 832 {
 833     // check that buffer can be used to write into the string
 834     wxString s;
 835     wxStrcpy(wxStringBuffer(s, 10), wxT("foo"));
 836
 837     CPPUNIT_ASSERT_EQUAL(3, s.length());
 838     CPPUNIT_ASSERT(wxT('f') == s[0u]);
 839     CPPUNIT_ASSERT(wxT('o') == s[1]);
 840     CPPUNIT_ASSERT(wxT('o') == s[2]);
 841
 842     {
 843         // also check that the buffer initially contains the original string
 844         // contents
 845         wxStringBuffer buf(s, 10);
 846         CPPUNIT_ASSERT_EQUAL( wxT('f'), buf[0] );
 847         CPPUNIT_ASSERT_EQUAL( wxT('o'), buf[1] );
 848         CPPUNIT_ASSERT_EQUAL( wxT('o'), buf[2] );
 849         CPPUNIT_ASSERT_EQUAL( wxT('\0'), buf[3] );
 850     }
 851
 852     {
 853         wxStringBufferLength buf(s, 10);
 854         CPPUNIT_ASSERT_EQUAL( wxT('f'), buf[0] );
 855         CPPUNIT_ASSERT_EQUAL( wxT('o'), buf[1] );
 856         CPPUNIT_ASSERT_EQUAL( wxT('o'), buf[2] );
 857         CPPUNIT_ASSERT_EQUAL( wxT('\0'), buf[3] );
 858
 859         // and check that it can be used to write only the specified number of
 860         // characters to the string
 861         wxStrcpy(buf, wxT("barrbaz"));
 862         buf.SetLength(4);
 863     }
 864
 865     CPPUNIT_ASSERT_EQUAL(4, s.length());
 866     CPPUNIT_ASSERT(wxT('b') == s[0u]);
 867     CPPUNIT_ASSERT(wxT('a') == s[1]);
 868     CPPUNIT_ASSERT(wxT('r') == s[2]);
 869     CPPUNIT_ASSERT(wxT('r') == s[3]);
 870
 871     // check that creating buffer of length smaller than string works, i.e. at
 872     // least doesn't crash (it would if we naively copied the entire original
 873     // string contents in the buffer)
 874     *wxStringBuffer(s, 1) = '!';
 875 }
 876
 877 void StringTestCase::UTF8Buf()
 878 {
 879 #if wxUSE_UNICODE
 880     // "czech" in Czech ("cestina"):
 881     static const char *textUTF8 = "\304\215e\305\241tina";
 882     static const wchar_t textUTF16[] = {0x10D, 0x65, 0x161, 0x74, 0x69, 0x6E, 0x61, 0};
 883
 884     wxString s;
 885     wxStrcpy(wxUTF8StringBuffer(s, 9), textUTF8);
 886     CPPUNIT_ASSERT(s == textUTF16);
 887
 888     {
 889         wxUTF8StringBufferLength buf(s, 20);
 890         wxStrcpy(buf, textUTF8);
 891         buf.SetLength(5);
 892     }
 893     CPPUNIT_ASSERT(s == wxString(textUTF16, 0, 3));
 894 #endif // wxUSE_UNICODE
 895 }
 896
 897
 898
 899 void StringTestCase::CStrDataTernaryOperator()
 900 {
 901     DoCStrDataTernaryOperator(true);
 902     DoCStrDataTernaryOperator(false);
 903 }
 904
 905 template<typename T> bool CheckStr(const wxString& expected, T s)
 906 {
 907     return expected == wxString(s);
 908 }
 909
 910 void StringTestCase::DoCStrDataTernaryOperator(bool cond)
 911 {
 912     // test compilation of wxCStrData when used with operator?: (the asserts
 913     // are not very important, we're testing if the code compiles at all):
 914
 915     wxString s("foo");
 916
 917     const wchar_t *wcStr = L"foo";
 918     CPPUNIT_ASSERT( CheckStr(s, (cond ? s.c_str() : wcStr)) );
 919     CPPUNIT_ASSERT( CheckStr(s, (cond ? s.c_str() : L"foo")) );
 920     CPPUNIT_ASSERT( CheckStr(s, (cond ? wcStr : s.c_str())) );
 921     CPPUNIT_ASSERT( CheckStr(s, (cond ? L"foo" : s.c_str())) );
 922
 923     const char *mbStr = "foo";
 924     CPPUNIT_ASSERT( CheckStr(s, (cond ? s.c_str() : mbStr)) );
 925     CPPUNIT_ASSERT( CheckStr(s, (cond ? s.c_str() : "foo")) );
 926     CPPUNIT_ASSERT( CheckStr(s, (cond ? mbStr : s.c_str())) );
 927     CPPUNIT_ASSERT( CheckStr(s, (cond ? "foo" : s.c_str())) );
 928
 929     wxString empty("");
 930     CPPUNIT_ASSERT( CheckStr(empty, (cond ? empty.c_str() : wxEmptyString)) );
 931     CPPUNIT_ASSERT( CheckStr(empty, (cond ? wxEmptyString : empty.c_str())) );
 932 }
 933
 934 void StringTestCase::CStrDataOperators()
 935 {
 936     wxString s("hello");
 937
 938     CPPUNIT_ASSERT( s.c_str()[0] == 'h' );
 939     CPPUNIT_ASSERT( s.c_str()[1] == 'e' );
 940
 941     // IMPORTANT: at least with the CRT coming with MSVC++ 2008 trying to access
 942     //            the final character results in an assert failure (with debug CRT)
 943     //CPPUNIT_ASSERT( s.c_str()[5] == '\0' );
 944
 945     CPPUNIT_ASSERT( *s.c_str() == 'h' );
 946     CPPUNIT_ASSERT( *(s.c_str() + 2) == 'l' );
 947     //CPPUNIT_ASSERT( *(s.c_str() + 5) == '\0' );
 948 }
 949
 950 bool CheckStrChar(const wxString& expected, char *s)
 951     { return CheckStr(expected, s); }
 952 bool CheckStrWChar(const wxString& expected, wchar_t *s)
 953     { return CheckStr(expected, s); }
 954 bool CheckStrConstChar(const wxString& expected, const char *s)
 955     { return CheckStr(expected, s); }
 956 bool CheckStrConstWChar(const wxString& expected, const wchar_t *s)
 957     { return CheckStr(expected, s); }
 958
 959 void StringTestCase::CStrDataImplicitConversion()
 960 {
 961     wxString s("foo");
 962
 963     CPPUNIT_ASSERT( CheckStrConstWChar(s, s.c_str()) );
 964     CPPUNIT_ASSERT( CheckStrConstChar(s, s.c_str()) );
 965
 966     // implicit conversion of wxString is not available in STL build
 967 #if !wxUSE_STL
 968     CPPUNIT_ASSERT( CheckStrConstWChar(s, s) );
 969     CPPUNIT_ASSERT( CheckStrConstChar(s, s) );
 970 #endif
 971 }
 972
 973 void StringTestCase::ExplicitConversion()
 974 {
 975     wxString s("foo");
 976
 977     CPPUNIT_ASSERT( CheckStr(s, s.mb_str()) );
 978     CPPUNIT_ASSERT( CheckStrConstChar(s, s.mb_str()) );
 979     CPPUNIT_ASSERT( CheckStrChar(s, s.char_str()) );
 980
 981     CPPUNIT_ASSERT( CheckStr(s, s.wc_str()) );
 982     CPPUNIT_ASSERT( CheckStrConstWChar(s, s.wc_str()) );
 983     CPPUNIT_ASSERT( CheckStrWChar(s, s.wchar_str()) );
 984 }
 985
 986 void StringTestCase::IndexedAccess()
 987 {
 988     wxString s("bar");
 989     CPPUNIT_ASSERT_EQUAL( 'r', (char)s[2] );
 990
 991     // this tests for a possible bug in UTF-8 based wxString implementation:
 992     // the 3rd character of the underlying byte string is going to change, but
 993     // the 3rd character of wxString should remain the same
 994     s[0] = L'\xe9';
 995     CPPUNIT_ASSERT_EQUAL( 'r', (char)s[2] );
 996 }
 997
 998 void StringTestCase::BeforeAndAfter()
 999 {
1000     // Construct a string with 2 equal signs in it by concatenating its three
1001     // parts: before the first "=", in between the two "="s and after the last
1002     // one. This allows to avoid duplicating the string contents (which has to
1003     // be different for Unicode and ANSI builds) in the tests below.
1004 #if wxUSE_UNICODE
1005     #define FIRST_PART L"letter"
1006     #define MIDDLE_PART L"\xe9;\xe7a"
1007     #define LAST_PART L"l\xe0"
1008 #else // !wxUSE_UNICODE
1009     #define FIRST_PART "letter"
1010     #define MIDDLE_PART "e;ca"
1011     #define LAST_PART "la"
1012 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
1013
1014     const wxString s(FIRST_PART wxT("=") MIDDLE_PART wxT("=") LAST_PART);
1015
1016     wxString r;
1017
1018     CPPUNIT_ASSERT_EQUAL( FIRST_PART, s.BeforeFirst('=', &r) );
1019     CPPUNIT_ASSERT_EQUAL( MIDDLE_PART wxT("=") LAST_PART, r );
1020
1021     CPPUNIT_ASSERT_EQUAL( s, s.BeforeFirst('!', &r) );
1022     CPPUNIT_ASSERT_EQUAL( "", r );
1023
1024
1025     CPPUNIT_ASSERT_EQUAL( FIRST_PART wxT("=") MIDDLE_PART, s.BeforeLast('=', &r) );
1026     CPPUNIT_ASSERT_EQUAL( LAST_PART, r );
1027
1028     CPPUNIT_ASSERT_EQUAL( "", s.BeforeLast('!', &r) );
1029     CPPUNIT_ASSERT_EQUAL( s, r );
1030
1031
1032     CPPUNIT_ASSERT_EQUAL( MIDDLE_PART wxT("=") LAST_PART, s.AfterFirst('=') );
1033     CPPUNIT_ASSERT_EQUAL( "", s.AfterFirst('!') );
1034
1035
1036     CPPUNIT_ASSERT_EQUAL( LAST_PART, s.AfterLast('=') );
1037     CPPUNIT_ASSERT_EQUAL( s, s.AfterLast('!') );
1038
1039     #undef LAST_PART
1040     #undef MIDDLE_PART
1041     #undef FIRST_PART
1042 }
1043
1044 void StringTestCase::ScopedBuffers()
1045 {
1046     // wxString relies on efficient buffers, verify they work as they should
1047
1048     const char *literal = "Hello World!";
1049
1050     // non-owned buffer points to the string passed to it
1051     wxScopedCharBuffer sbuf = wxScopedCharBuffer::CreateNonOwned(literal);
1052     CPPUNIT_ASSERT( sbuf.data() == literal );
1053
1054     // a copy of scoped non-owned buffer still points to the same string
1055     wxScopedCharBuffer sbuf2(sbuf);
1056     CPPUNIT_ASSERT( sbuf.data() == sbuf2.data() );
1057
1058     // but assigning it to wxCharBuffer makes a full copy
1059     wxCharBuffer buf(sbuf);
1060     CPPUNIT_ASSERT( buf.data() != literal );
1061     CPPUNIT_ASSERT_EQUAL( literal, buf.data() );
1062
1063     wxCharBuffer buf2 = sbuf;
1064     CPPUNIT_ASSERT( buf2.data() != literal );
1065     CPPUNIT_ASSERT_EQUAL( literal, buf.data() );
1066
1067     // Check that extending the buffer keeps it NUL-terminated.
1068     size_t len = 10;
1069
1070     wxCharBuffer buf3(len);
1071     CPPUNIT_ASSERT_EQUAL('\0', buf3.data()[len]);
1072
1073     wxCharBuffer buf4;
1074     buf4.extend(len);
1075     CPPUNIT_ASSERT_EQUAL('\0', buf4.data()[len]);
1076
1077     wxCharBuffer buf5(5);
1078     buf5.extend(len);
1079     CPPUNIT_ASSERT_EQUAL('\0', buf5.data()[len]);
1080 }