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( Extraction );
  40         CPPUNIT_TEST( Trim );
  41         CPPUNIT_TEST( Find );
  42         CPPUNIT_TEST( Replace );
  43         CPPUNIT_TEST( Match );
  44         CPPUNIT_TEST( CaseChanges );
  45         CPPUNIT_TEST( Compare );
  46         CPPUNIT_TEST( CompareNoCase );
  47         CPPUNIT_TEST( Contains );
  48         CPPUNIT_TEST( ToLong );
  49         CPPUNIT_TEST( ToULong );
  50 #ifdef wxLongLong_t
  51         CPPUNIT_TEST( ToLongLong );
  52         CPPUNIT_TEST( ToULongLong );
  53 #endif // wxLongLong_t
  54         CPPUNIT_TEST( ToDouble );
  55         CPPUNIT_TEST( WriteBuf );
  56     CPPUNIT_TEST_SUITE_END();
  57
  58     void String();
  59     void PChar();
  60     void Format();
  61     void Constructors();
  62     void Extraction();
  63     void Trim();
  64     void Find();
  65     void Replace();
  66     void Match();
  67     void CaseChanges();
  68     void Compare();
  69     void CompareNoCase();
  70     void Contains();
  71     void ToLong();
  72     void ToULong();
  73 #ifdef wxLongLong_t
  74     void ToLongLong();
  75     void ToULongLong();
  76 #endif // wxLongLong_t
  77     void ToDouble();
  78     void WriteBuf();
  79
  80     DECLARE_NO_COPY_CLASS(StringTestCase)
  81 };
  82
  83 // register in the unnamed registry so that these tests are run by default
  84 CPPUNIT_TEST_SUITE_REGISTRATION( StringTestCase );
  85
  86 // also include in it's own registry so that these tests can be run alone
  87 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( StringTestCase, "StringTestCase" );
  88
  89 StringTestCase::StringTestCase()
  90 {
  91 }
  92
  93 void StringTestCase::String()
  94 {
  95     wxString a, b, c;
  96
  97     a.reserve (128);
  98     b.reserve (128);
  99     c.reserve (128);
 100
 101     for (int i = 0; i < 2; ++i)
 102     {
 103         a = _T("Hello");
 104         b = _T(" world");
 105         c = _T("! How'ya doin'?");
 106         a += b;
 107         a += c;
 108         c = _T("Hello world! What's up?");
 109         CPPUNIT_ASSERT( c != a );
 110     }
 111 }
 112
 113 void StringTestCase::PChar()
 114 {
 115     wxChar a [128];
 116     wxChar b [128];
 117     wxChar c [128];
 118
 119     for (int i = 0; i < 2; ++i)
 120     {
 121         wxStrcpy (a, _T("Hello"));
 122         wxStrcpy (b, _T(" world"));
 123         wxStrcpy (c, _T("! How'ya doin'?"));
 124         wxStrcat (a, b);
 125         wxStrcat (a, c);
 126         wxStrcpy (c, _T("Hello world! What's up?"));
 127         CPPUNIT_ASSERT( wxStrcmp (c, a) != 0 );
 128     }
 129 }
 130
 131 void StringTestCase::Format()
 132 {
 133     wxString s1,s2;
 134     s1.Printf(_T("%03d"), 18);
 135     CPPUNIT_ASSERT( s1 == wxString::Format(_T("%03d"), 18) );
 136     s2.Printf(_T("Number 18: %s\n"), s1.c_str());
 137     CPPUNIT_ASSERT( s2 == wxString::Format(_T("Number 18: %s\n"), s1.c_str()) );
 138
 139     static const size_t lengths[] = { 1, 512, 1024, 1025, 2048, 4096, 4097 };
 140     for ( size_t n = 0; n < WXSIZEOF(lengths); n++ )
 141     {
 142         const size_t len = lengths[n];
 143
 144         wxString s(_T('Z'), len);
 145         CPPUNIT_ASSERT_EQUAL( len, wxString::Format(_T("%s"), s.c_str()).length());
 146     }
 147 }
 148
 149 void StringTestCase::Constructors()
 150 {
 151     #define TEST_CTOR(args, res)                                               \
 152         {                                                                      \
 153             wxString s args ;                                                  \
 154             CPPUNIT_ASSERT( s == res );                                        \
 155         }
 156
 157     TEST_CTOR((_T('Z'), 4), _T("ZZZZ"));
 158     TEST_CTOR((_T("Hello"), 4), _T("Hell"));
 159     TEST_CTOR((_T("Hello"), 5), _T("Hello"));
 160
 161     static const wxChar *s = _T("?really!");
 162     const wxChar *start = wxStrchr(s, _T('r'));
 163     const wxChar *end = wxStrchr(s, _T('!'));
 164     TEST_CTOR((start, end), _T("really"));
 165 }
 166
 167
 168 void StringTestCase::Extraction()
 169 {
 170     wxString s(_T("Hello, world!"));
 171
 172     CPPUNIT_ASSERT( wxStrcmp( s.c_str() , _T("Hello, world!") ) == 0 );
 173     CPPUNIT_ASSERT( wxStrcmp( s.Left(5).c_str() , _T("Hello") ) == 0 );
 174     CPPUNIT_ASSERT( wxStrcmp( s.Right(6).c_str() , _T("world!") ) == 0 );
 175     CPPUNIT_ASSERT( wxStrcmp( s(3, 5).c_str() , _T("lo, w") ) == 0 );
 176     CPPUNIT_ASSERT( wxStrcmp( s.Mid(3).c_str() , _T("lo, world!") ) == 0 );
 177     CPPUNIT_ASSERT( wxStrcmp( s.substr(3, 5).c_str() , _T("lo, w") ) == 0 );
 178     CPPUNIT_ASSERT( wxStrcmp( s.substr(3).c_str() , _T("lo, world!") ) == 0 );
 179
 180     wxString rest;
 181
 182     #define TEST_STARTS_WITH(prefix, correct_rest, result)                    \
 183         CPPUNIT_ASSERT_EQUAL(result, s.StartsWith(prefix, &rest));            \
 184         if ( result )                                                         \
 185             CPPUNIT_ASSERT_EQUAL(wxString(correct_rest), rest)
 186
 187     TEST_STARTS_WITH( _T("Hello"),           _T(", world!"),      true  );
 188     TEST_STARTS_WITH( _T("Hello, "),         _T("world!"),        true  );
 189     TEST_STARTS_WITH( _T("Hello, world!"),   _T(""),              true  );
 190     TEST_STARTS_WITH( _T("Hello, world!!!"), _T(""),              false );
 191     TEST_STARTS_WITH( _T(""),                _T("Hello, world!"), true  );
 192     TEST_STARTS_WITH( _T("Goodbye"),         _T(""),              false );
 193     TEST_STARTS_WITH( _T("Hi"),              _T(""),              false );
 194
 195     #undef TEST_STARTS_WITH
 196
 197     #define TEST_ENDS_WITH(suffix, correct_rest, result)                      \
 198         CPPUNIT_ASSERT_EQUAL(result, s.EndsWith(suffix, &rest));              \
 199         if ( result )                                                         \
 200             CPPUNIT_ASSERT_EQUAL(wxString(correct_rest), rest)
 201
 202     TEST_ENDS_WITH( _T(""),                 _T("Hello, world!"), true  );
 203     TEST_ENDS_WITH( _T("!"),                _T("Hello, world"),  true  );
 204     TEST_ENDS_WITH( _T(", world!"),         _T("Hello"),         true  );
 205     TEST_ENDS_WITH( _T("ello, world!"),     _T("H"),             true  );
 206     TEST_ENDS_WITH( _T("Hello, world!"),    _T(""),              true  );
 207     TEST_ENDS_WITH( _T("very long string"), _T(""),              false );
 208     TEST_ENDS_WITH( _T("?"),                _T(""),              false );
 209     TEST_ENDS_WITH( _T("Hello, world"),     _T(""),              false );
 210     TEST_ENDS_WITH( _T("Gello, world!"),    _T(""),              false );
 211
 212     #undef TEST_ENDS_WITH
 213 }
 214
 215 void StringTestCase::Trim()
 216 {
 217     #define TEST_TRIM( str , dir , result )  \
 218         CPPUNIT_ASSERT( wxString(str).Trim(dir) == result )
 219
 220     TEST_TRIM( _T("  Test  "),  true, _T("  Test") );
 221     TEST_TRIM( _T("    "),      true, _T("")       );
 222     TEST_TRIM( _T(" "),         true, _T("")       );
 223     TEST_TRIM( _T(""),          true, _T("")       );
 224
 225     TEST_TRIM( _T("  Test  "),  false, _T("Test  ") );
 226     TEST_TRIM( _T("    "),      false, _T("")       );
 227     TEST_TRIM( _T(" "),         false, _T("")       );
 228     TEST_TRIM( _T(""),          false, _T("")       );
 229
 230     #undef TEST_TRIM
 231 }
 232
 233 void StringTestCase::Find()
 234 {
 235     #define TEST_FIND( str , start , result )  \
 236         CPPUNIT_ASSERT( wxString(str).find(_T("ell"), start) == result );
 237
 238     TEST_FIND( _T("Well, hello world"),  0, 1              );
 239     TEST_FIND( _T("Well, hello world"),  6, 7              );
 240     TEST_FIND( _T("Well, hello world"),  9, wxString::npos );
 241
 242     #undef TEST_FIND
 243 }
 244
 245 void StringTestCase::Replace()
 246 {
 247     #define TEST_REPLACE( original , pos , len , replacement , result ) \
 248         { \
 249             wxString s = original; \
 250             s.replace( pos , len , replacement ); \
 251             CPPUNIT_ASSERT( s == result ); \
 252         }
 253
 254     TEST_REPLACE( _T("012-AWORD-XYZ"), 4, 5, _T("BWORD"),  _T("012-BWORD-XYZ") );
 255     TEST_REPLACE( _T("increase"),      0, 2, _T("de"),     _T("decrease")      );
 256     TEST_REPLACE( _T("wxWindow"),      8, 0, _T("s"),      _T("wxWindows")     );
 257     TEST_REPLACE( _T("foobar"),        3, 0, _T("-"),      _T("foo-bar")       );
 258     TEST_REPLACE( _T("barfoo"),        0, 6, _T("foobar"), _T("foobar")        );
 259
 260
 261     #define TEST_NULLCHARREPLACE( o , olen, pos , len , replacement , r, rlen ) \
 262         { \
 263             wxString s(o,olen); \
 264             s.replace( pos , len , replacement ); \
 265             CPPUNIT_ASSERT( s == wxString(r,rlen) ); \
 266         }
 267
 268     TEST_NULLCHARREPLACE( _T("null\0char"), 9, 5, 1, _T("d"),
 269                           _T("null\0dhar"), 9 );
 270
 271     #define TEST_WXREPLACE( o , olen, olds, news, all, r, rlen ) \
 272         { \
 273             wxString s(o,olen); \
 274             s.Replace( olds, news, all ); \
 275             CPPUNIT_ASSERT( s == wxString(r,rlen) ); \
 276         }
 277
 278     TEST_WXREPLACE( _T("null\0char"), 9, _T("c"), _T("de"), true,
 279                           _T("null\0dehar"), 10 );
 280
 281     TEST_WXREPLACE( _T("null\0dehar"), 10, _T("de"), _T("c"), true,
 282                           _T("null\0char"), 9 );
 283
 284     #undef TEST_WXREPLACE
 285     #undef TEST_NULLCHARREPLACE
 286     #undef TEST_REPLACE
 287 }
 288
 289 void StringTestCase::Match()
 290 {
 291     #define TEST_MATCH( s1 , s2 , result ) \
 292         CPPUNIT_ASSERT( wxString(s1).Matches(s2) == result )
 293
 294     TEST_MATCH( _T("foobar"),    _T("foo*"),   true  );
 295     TEST_MATCH( _T("foobar"),    _T("*oo*"),   true  );
 296     TEST_MATCH( _T("foobar"),    _T("*bar"),   true  );
 297     TEST_MATCH( _T("foobar"),    _T("??????"), true  );
 298     TEST_MATCH( _T("foobar"),    _T("f??b*"),  true  );
 299     TEST_MATCH( _T("foobar"),    _T("f?b*"),   false );
 300     TEST_MATCH( _T("foobar"),    _T("*goo*"),  false );
 301     TEST_MATCH( _T("foobar"),    _T("*foo"),   false );
 302     TEST_MATCH( _T("foobarfoo"), _T("*foo"),   true  );
 303     TEST_MATCH( _T(""),          _T("*"),      true  );
 304     TEST_MATCH( _T(""),          _T("?"),      false );
 305
 306     #undef TEST_MATCH
 307 }
 308
 309
 310 void StringTestCase::CaseChanges()
 311 {
 312     wxString s1(_T("Hello!"));
 313     wxString s1u(s1);
 314     wxString s1l(s1);
 315     s1u.MakeUpper();
 316     s1l.MakeLower();
 317     wxString s2u, s2l;
 318     s2u.MakeUpper();
 319     s2l.MakeLower();
 320
 321     CPPUNIT_ASSERT( s1u == _T("HELLO!") );
 322     CPPUNIT_ASSERT( s1l == _T("hello!") );
 323     CPPUNIT_ASSERT( s2u == wxEmptyString );
 324     CPPUNIT_ASSERT( s2l == wxEmptyString );
 325
 326 #if !wxUSE_UNICODE
 327     wxLocale locRu(wxLANGUAGE_RUSSIAN, 0 /* flags */);
 328     if ( locRu.IsOk() )
 329     {
 330         // try upper casing 8bit strings
 331         const wchar_t capital_ya[] = { 0x42f, 0 },
 332                       small_ya[]   = { 0x44f, 0 };
 333
 334         wxString sUpper(wxConvLibc.cWC2MB(capital_ya)),
 335                  sLower(wxConvLibc.cWC2MB(small_ya));
 336
 337         CPPUNIT_ASSERT( sUpper.Lower() == sLower );
 338         CPPUNIT_ASSERT( sLower.Upper() == sUpper );
 339     }
 340 #endif // !wxUSE_UNICODE
 341 }
 342
 343 void StringTestCase::Compare()
 344 {
 345     wxString s1 = wxT("AHH");
 346     wxString eq = wxT("AHH");
 347     wxString neq1 = wxT("HAH");
 348     wxString neq2 = wxT("AH");
 349     wxString neq3 = wxT("AHHH");
 350     wxString neq4 = wxT("AhH");
 351
 352     CPPUNIT_ASSERT( s1 == eq );
 353     CPPUNIT_ASSERT( s1 != neq1 );
 354     CPPUNIT_ASSERT( s1 != neq2 );
 355     CPPUNIT_ASSERT( s1 != neq3 );
 356     CPPUNIT_ASSERT( s1 != neq4 );
 357
 358 //    wxString _s1 = wxT("A\0HH");
 359 //    wxString _eq = wxT("A\0HH");
 360 //    wxString _neq1 = wxT("H\0AH");
 361 //    wxString _neq2 = wxT("A\0H");
 362 //    wxString _neq3 = wxT("A\0HHH");
 363 //    wxString _neq4 = wxT("A\0hH");
 364     s1.insert(1,1,'\0');
 365     eq.insert(1,1,'\0');
 366     neq1.insert(1,1,'\0');
 367     neq2.insert(1,1,'\0');
 368     neq3.insert(1,1,'\0');
 369     neq4.insert(1,1,'\0');
 370
 371     CPPUNIT_ASSERT( s1 == eq );
 372     CPPUNIT_ASSERT( s1 != neq1 );
 373     CPPUNIT_ASSERT( s1 != neq2 );
 374     CPPUNIT_ASSERT( s1 != neq3 );
 375     CPPUNIT_ASSERT( s1 != neq4 );
 376 }
 377
 378 void StringTestCase::CompareNoCase()
 379 {
 380     wxString s1 = wxT("AHH");
 381     wxString eq = wxT("AHH");
 382     wxString eq2 = wxT("AhH");
 383     wxString eq3 = wxT("ahh");
 384     wxString neq = wxT("HAH");
 385     wxString neq2 = wxT("AH");
 386     wxString neq3 = wxT("AHHH");
 387
 388     #define CPPUNIT_CNCEQ_ASSERT(s1, s2) CPPUNIT_ASSERT( s1.CmpNoCase(s2) == 0)
 389     #define CPPUNIT_CNCNEQ_ASSERT(s1, s2) CPPUNIT_ASSERT( s1.CmpNoCase(s2) != 0)
 390
 391     CPPUNIT_CNCEQ_ASSERT( s1, eq );
 392     CPPUNIT_CNCEQ_ASSERT( s1, eq2 );
 393     CPPUNIT_CNCEQ_ASSERT( s1, eq3 );
 394
 395     CPPUNIT_CNCNEQ_ASSERT( s1, neq );
 396     CPPUNIT_CNCNEQ_ASSERT( s1, neq2 );
 397     CPPUNIT_CNCNEQ_ASSERT( s1, neq3 );
 398
 399
 400 //    wxString _s1 = wxT("A\0HH");
 401 //    wxString _eq = wxT("A\0HH");
 402 //    wxString _eq2 = wxT("A\0hH");
 403 //    wxString _eq3 = wxT("a\0hh");
 404 //    wxString _neq = wxT("H\0AH");
 405 //    wxString _neq2 = wxT("A\0H");
 406 //    wxString _neq3 = wxT("A\0HHH");
 407
 408     s1.insert(1,1,'\0');
 409     eq.insert(1,1,'\0');
 410     eq2.insert(1,1,'\0');
 411     eq3.insert(1,1,'\0');
 412     neq.insert(1,1,'\0');
 413     neq2.insert(1,1,'\0');
 414     neq3.insert(1,1,'\0');
 415
 416     CPPUNIT_CNCEQ_ASSERT( s1, eq );
 417     CPPUNIT_CNCEQ_ASSERT( s1, eq2 );
 418     CPPUNIT_CNCEQ_ASSERT( s1, eq3 );
 419
 420     CPPUNIT_CNCNEQ_ASSERT( s1, neq );
 421     CPPUNIT_CNCNEQ_ASSERT( s1, neq2 );
 422     CPPUNIT_CNCNEQ_ASSERT( s1, neq3 );
 423 }
 424
 425 void StringTestCase::Contains()
 426 {
 427     static const struct ContainsData
 428     {
 429         const wxChar *hay;
 430         const wxChar *needle;
 431         bool contains;
 432     } containsData[] =
 433     {
 434         { _T(""),       _T(""),         true  },
 435         { _T(""),       _T("foo"),      false },
 436         { _T("foo"),    _T(""),         true  },
 437         { _T("foo"),    _T("f"),        true  },
 438         { _T("foo"),    _T("o"),        true  },
 439         { _T("foo"),    _T("oo"),       true  },
 440         { _T("foo"),    _T("ooo"),      false },
 441         { _T("foo"),    _T("oooo"),     false },
 442         { _T("foo"),    _T("fooo"),     false },
 443     };
 444
 445     for ( size_t n = 0; n < WXSIZEOF(containsData); n++ )
 446     {
 447         const ContainsData& cd = containsData[n];
 448         CPPUNIT_ASSERT_EQUAL( cd.contains, wxString(cd.hay).Contains(cd.needle) );
 449     }
 450 }
 451
 452 // flags used in ToLongData.flags
 453 enum
 454 {
 455     Number_Ok       = 0,
 456     Number_Invalid  = 1,
 457     Number_Unsigned = 2,    // if not specified, works for signed conversion
 458     Number_Signed   = 4,    // if not specified, works for unsigned
 459     Number_LongLong = 8,    // only for long long tests
 460     Number_Long     = 16,   // only for long tests
 461 };
 462
 463 static const struct ToLongData
 464 {
 465     const wxChar *str;
 466 #ifdef wxLongLong_t
 467     wxLongLong_t value;
 468 #else
 469     long value;
 470 #endif // wxLongLong_t
 471     int flags;
 472
 473     long LValue() const { return value; }
 474     unsigned long ULValue() const { return value; }
 475 #ifdef wxLongLong_t
 476     wxLongLong_t LLValue() const { return value; }
 477     wxULongLong_t ULLValue() const { return (wxULongLong_t)value; }
 478 #endif // wxLongLong_t
 479
 480     bool IsOk() const { return !(flags & Number_Invalid); }
 481 } longData[] =
 482 {
 483     { _T("1"), 1, Number_Ok },
 484     { _T("0"), 0, Number_Ok },
 485     { _T("a"), 0, Number_Invalid },
 486     { _T("12345"), 12345, Number_Ok },
 487     { _T("--1"), 0, Number_Invalid },
 488
 489     { _T("-1"), -1, Number_Signed | Number_Long },
 490     // this is surprizing but consistent with strtoul() behaviour
 491     { _T("-1"), ULONG_MAX, Number_Unsigned | Number_Long },
 492
 493     // this must overflow, even with 64 bit long
 494     { _T("922337203685477580711"), 0, Number_Invalid },
 495
 496 #ifdef wxLongLong_t
 497     { _T("2147483648"), wxLL(2147483648), Number_LongLong },
 498     { _T("-2147483648"), wxLL(-2147483648), Number_LongLong | Number_Signed },
 499     { _T("9223372036854775808"), wxULL(9223372036854775808), Number_LongLong |
 500                                                              Number_Unsigned },
 501 #endif // wxLongLong_t
 502 };
 503
 504 void StringTestCase::ToLong()
 505 {
 506     long l;
 507     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 508     {
 509         const ToLongData& ld = longData[n];
 510
 511         if ( ld.flags & (Number_LongLong | Number_Unsigned) )
 512             continue;
 513
 514         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToLong(&l) );
 515         if ( ld.IsOk() )
 516             CPPUNIT_ASSERT_EQUAL( ld.LValue(), l );
 517     }
 518 }
 519
 520 void StringTestCase::ToULong()
 521 {
 522     unsigned long ul;
 523     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 524     {
 525         const ToLongData& ld = longData[n];
 526
 527         if ( ld.flags & (Number_LongLong | Number_Signed) )
 528             continue;
 529
 530         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToULong(&ul) );
 531         if ( ld.IsOk() )
 532             CPPUNIT_ASSERT_EQUAL( ld.ULValue(), ul );
 533     }
 534 }
 535
 536 #ifdef wxLongLong_t
 537
 538 void StringTestCase::ToLongLong()
 539 {
 540     wxLongLong_t l;
 541     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 542     {
 543         const ToLongData& ld = longData[n];
 544
 545         if ( ld.flags & (Number_Long | Number_Unsigned) )
 546             continue;
 547
 548         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToLongLong(&l) );
 549         if ( ld.IsOk() )
 550             CPPUNIT_ASSERT_EQUAL( ld.LLValue(), l );
 551     }
 552 }
 553
 554 void StringTestCase::ToULongLong()
 555 {
 556     wxULongLong_t ul;
 557     for ( size_t n = 0; n < WXSIZEOF(longData); n++ )
 558     {
 559         const ToLongData& ld = longData[n];
 560
 561         if ( ld.flags & (Number_Long | Number_Signed) )
 562             continue;
 563
 564         CPPUNIT_ASSERT_EQUAL( ld.IsOk(), wxString(ld.str).ToULongLong(&ul) );
 565         if ( ld.IsOk() )
 566             CPPUNIT_ASSERT_EQUAL( ld.ULLValue(), ul );
 567     }
 568 }
 569
 570 #endif // wxLongLong_t
 571
 572 void StringTestCase::ToDouble()
 573 {
 574     double d;
 575     static const struct ToDoubleData
 576     {
 577         const wxChar *str;
 578         double value;
 579         bool ok;
 580     } doubleData[] =
 581     {
 582         { _T("1"), 1, true },
 583         { _T("1.23"), 1.23, true },
 584         { _T(".1"), .1, true },
 585         { _T("1."), 1, true },
 586         { _T("1.."), 0, false },
 587         { _T("0"), 0, true },
 588         { _T("a"), 0, false },
 589         { _T("12345"), 12345, true },
 590         { _T("-1"), -1, true },
 591         { _T("--1"), 0, false },
 592     };
 593
 594     // we need to use decimal point, not comma or whatever is its value for the
 595     // current locale
 596     wxSetlocale(LC_ALL, _T("C"));
 597
 598     size_t n;
 599     for ( n = 0; n < WXSIZEOF(doubleData); n++ )
 600     {
 601         const ToDoubleData& ld = doubleData[n];
 602         CPPUNIT_ASSERT_EQUAL( ld.ok, wxString(ld.str).ToDouble(&d) );
 603         if ( ld.ok )
 604             CPPUNIT_ASSERT_EQUAL( ld.value, d );
 605     }
 606 }
 607
 608 void StringTestCase::WriteBuf()
 609 {
 610     wxString s;
 611     wxStrcpy(wxStringBuffer(s, 10), _T("foo"));
 612
 613     CPPUNIT_ASSERT_EQUAL(_T('f'), s[0u]);
 614     CPPUNIT_ASSERT_EQUAL(_T('o'), s[1]);
 615     CPPUNIT_ASSERT_EQUAL(_T('o'), s[2]);
 616     CPPUNIT_ASSERT_EQUAL((size_t)3, s.length());
 617
 618     {
 619         wxChar *p = s.GetWriteBuf(10);
 620         wxStrcpy(p, _T("barrbaz"));
 621         s.UngetWriteBuf(4);
 622
 623         CPPUNIT_ASSERT_EQUAL(_T('b'), s[0u]);
 624         CPPUNIT_ASSERT_EQUAL(_T('a'), s[1]);
 625         CPPUNIT_ASSERT_EQUAL(_T('r'), s[2]);
 626         CPPUNIT_ASSERT_EQUAL(_T('r'), s[3]);
 627         CPPUNIT_ASSERT_EQUAL((size_t)4, s.length());
 628
 629         CPPUNIT_ASSERT_EQUAL( 0, wxStrcmp(_T("barr"), s) );
 630     }
 631 }
 632