tests/formatconverter/formatconvertertest.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/formatconverter/formatconverter.cpp
   3 // Purpose:     Test wxFormatConverter
   4 // Author:      Mike Wetherell
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 2004 Mike Wetherell
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 //
  11 // Notes:
  12 //
  13 // The conversions wxFormatConverter currently does are as follows:
  14 //
  15 //    %s, %lS   ->  %ls
  16 //    %S, %hS   ->  %s
  17 //    %c, %lC   ->  %lc
  18 //    %C, %hC   ->  %c
  19 //
  20 // %hs and %hc stay the same.
  21 //
  22 // %S and %C aren't actually in the ISO C or C++ standards, but they can be
  23 // avoided when writing portable code.
  24 //
  25 // Nor are %hs or %hc in the standards, which means wxWidgets currently doesn't
  26 // have a specifier for 'char' types that is ok for all builds and platforms.
  27 //
  28 // The effect of using %hs/%hc is undefined, though RTLs are quite likely
  29 // to just ignore the 'h', so maybe it works as required even though it's
  30 // not legal.
  31 //
  32 // I've put in some checks, such as this which will flag up any platforms
  33 // where this is not the case:
  34 //
  35 //  CPPUNIT_ASSERT(wxString::Format(wxT("%hs"), "test") == wxT("test"));
  36 //
  37
  38 // For compilers that support precompilation, includes "wx/wx.h".
  39 #include "testprec.h"
  40
  41 #ifdef __BORLANDC__
  42     #pragma hdrstop
  43 #endif
  44
  45 // for all others, include the necessary headers
  46 #ifndef WX_PRECOMP
  47     #include "wx/wx.h"
  48 #endif
  49
  50
  51 using CppUnit::TestCase;
  52 using std::string;
  53
  54 ///////////////////////////////////////////////////////////////////////////////
  55 // The test case
  56 //
  57 // wxFormatConverter only changes %s, %c, %S and %C, all others are treated
  58 // equally, therefore it is enough to choose just one other for testing, %d
  59 // will do.
  60
  61 class FormatConverterTestCase : public TestCase
  62 {
  63     CPPUNIT_TEST_SUITE(FormatConverterTestCase);
  64         CPPUNIT_TEST(format_d);
  65         CPPUNIT_TEST(format_hd);
  66         CPPUNIT_TEST(format_ld);
  67         CPPUNIT_TEST(format_s);
  68         CPPUNIT_TEST(format_hs);
  69         CPPUNIT_TEST(format_ls);
  70         CPPUNIT_TEST(format_c);
  71         CPPUNIT_TEST(format_hc);
  72         CPPUNIT_TEST(format_lc);
  73         CPPUNIT_TEST(format_S);
  74         CPPUNIT_TEST(format_hS);
  75         CPPUNIT_TEST(format_lS);
  76         CPPUNIT_TEST(format_C);
  77         CPPUNIT_TEST(format_hC);
  78         CPPUNIT_TEST(format_lC);
  79         CPPUNIT_TEST(testLonger);
  80     CPPUNIT_TEST_SUITE_END();
  81
  82     void format_d();
  83     void format_hd();
  84     void format_ld();
  85     void format_s();
  86     void format_hs();
  87     void format_ls();
  88     void format_c();
  89     void format_hc();
  90     void format_lc();
  91
  92     void format_S();
  93     void format_hS();
  94     void format_lS();
  95     void format_C();
  96     void format_hC();
  97     void format_lC();
  98     void testLonger();
  99
 100     void doTest(const char *input, const char *expectedScanf,
 101                                    const char *expectedUtf8,
 102                                    const char *expectedWcharUnix,
 103                                    const char *expectedWcharWindows);
 104     void check(const wxString& input, const wxString& expectedScanf,
 105                                       const wxString& expectedUtf8,
 106                                       const wxString& expectedWcharUnix,
 107                                       const wxString& expectedWcharWindows);
 108 };
 109
 110 void FormatConverterTestCase::format_d()
 111 {
 112     doTest("d", "d", "d", "d", "d");
 113     CPPUNIT_ASSERT(wxString::Format(wxT("%d"), 255) == wxT("255"));
 114     CPPUNIT_ASSERT(wxString::Format(wxT("%05d"), 255) == wxT("00255"));
 115     CPPUNIT_ASSERT(wxString::Format(wxT("% 5d"), 255) == wxT("  255"));
 116     CPPUNIT_ASSERT(wxString::Format(wxT("% 5d"), -255) == wxT(" -255"));
 117     CPPUNIT_ASSERT(wxString::Format(wxT("%-5d"), -255) == wxT("-255 "));
 118     CPPUNIT_ASSERT(wxString::Format(wxT("%+5d"), 255) == wxT(" +255"));
 119     CPPUNIT_ASSERT(wxString::Format(wxT("%*d"), 5, 255) == wxT("  255"));
 120 }
 121
 122 void FormatConverterTestCase::format_hd()
 123 {
 124     doTest("hd", "hd", "hd", "hd", "hd");
 125     short s = 32767;
 126     CPPUNIT_ASSERT(wxString::Format(wxT("%hd"), s) == wxT("32767"));
 127 }
 128
 129 void FormatConverterTestCase::format_ld()
 130 {
 131     doTest("ld", "ld", "ld", "ld", "ld");
 132     long l = 2147483647L;
 133     CPPUNIT_ASSERT(wxString::Format(wxT("%ld"), l) == wxT("2147483647"));
 134 }
 135
 136 void FormatConverterTestCase::format_s()
 137 {
 138     doTest("s", "ls", "s", "ls", "s");
 139     CPPUNIT_ASSERT(wxString::Format(wxT("%s!"), wxT("test")) == wxT("test!"));
 140     CPPUNIT_ASSERT(wxString::Format(wxT("%6s!"), wxT("test")) == wxT("  test!"));
 141     CPPUNIT_ASSERT(wxString::Format(wxT("%-6s!"), wxT("test")) == wxT("test  !"));
 142     CPPUNIT_ASSERT(wxString::Format(wxT("%.6s!"), wxT("test")) == wxT("test!"));
 143     CPPUNIT_ASSERT(wxString::Format(wxT("%6.4s!"), wxT("testing")) == wxT("  test!"));
 144 }
 145
 146 void FormatConverterTestCase::format_hs()
 147 {
 148     doTest("hs", "hs", "s", "ls", "s");
 149     CPPUNIT_ASSERT(wxString::Format(wxString(wxT("%hs!")), "test") == wxT("test!"));
 150     CPPUNIT_ASSERT(wxString::Format(wxString(wxT("%6hs!")), "test") == wxT("  test!"));
 151     CPPUNIT_ASSERT(wxString::Format(wxString(wxT("%-6hs!")), "test") == wxT("test  !"));
 152     CPPUNIT_ASSERT(wxString::Format(wxString(wxT("%.6hs!")), "test") == wxT("test!"));
 153     CPPUNIT_ASSERT(wxString::Format(wxString(wxT("%6.4hs!")), "testing") == wxT("  test!"));
 154 }
 155
 156 void FormatConverterTestCase::format_ls()
 157 {
 158     doTest("ls", "ls", "s", "ls", "s");
 159     CPPUNIT_ASSERT(wxString::Format(wxT("%ls!"), L"test") == wxT("test!"));
 160     CPPUNIT_ASSERT(wxString::Format(wxT("%6ls!"), L"test") == wxT("  test!"));
 161     CPPUNIT_ASSERT(wxString::Format(wxT("%-6ls!"), L"test") == wxT("test  !"));
 162     CPPUNIT_ASSERT(wxString::Format(wxT("%.6ls!"), L"test") == wxT("test!"));
 163     CPPUNIT_ASSERT(wxString::Format(wxT("%6.4ls!"), L"testing") == wxT("  test!"));
 164 }
 165
 166 void FormatConverterTestCase::format_c()
 167 {
 168     doTest("c", "lc", "lc", "lc", "c");
 169     CPPUNIT_ASSERT(wxString::Format(wxT("%c"), wxT('x')) == wxT("x"));
 170     CPPUNIT_ASSERT(wxString::Format(wxT("%2c"), wxT('x')) == wxT(" x"));
 171     CPPUNIT_ASSERT(wxString::Format(wxT("%-2c"), wxT('x')) == wxT("x "));
 172 }
 173
 174 void FormatConverterTestCase::format_hc()
 175 {
 176     doTest("hc", "hc", "lc", "lc", "c");
 177     CPPUNIT_ASSERT(wxString::Format(wxString(wxT("%hc")), 'x') == wxT("x"));
 178     CPPUNIT_ASSERT(wxString::Format(wxString(wxT("%2hc")), 'x') == wxT(" x"));
 179     CPPUNIT_ASSERT(wxString::Format(wxString(wxT("%-2hc")), 'x') == wxT("x "));
 180 }
 181
 182 void FormatConverterTestCase::format_lc()
 183 {
 184     doTest("lc", "lc", "lc", "lc", "c");
 185     CPPUNIT_ASSERT(wxString::Format(wxT("%lc"), L'x') == wxT("x"));
 186     CPPUNIT_ASSERT(wxString::Format(wxT("%2lc"), L'x') == wxT(" x"));
 187     CPPUNIT_ASSERT(wxString::Format(wxT("%-2lc"), L'x') == wxT("x "));
 188 }
 189
 190
 191 void FormatConverterTestCase::format_S()
 192     { doTest("S",  "s", "s", "ls", "s");  }
 193 void FormatConverterTestCase::format_hS()
 194     { doTest("hS", "s", "s", "ls", "s");  }
 195 void FormatConverterTestCase::format_lS()
 196     { doTest("lS", "ls", "s", "ls", "s"); }
 197
 198 void FormatConverterTestCase::format_C()
 199     { doTest("C",  "c", "lc", "lc", "c");  }
 200 void FormatConverterTestCase::format_hC()
 201     { doTest("hC", "c", "lc", "lc", "c");  }
 202 void FormatConverterTestCase::format_lC()
 203     { doTest("lC", "lc", "lc", "lc", "c"); }
 204
 205 // It's possible that although a format converts correctly alone, it leaves
 206 // the converter in a bad state that will affect subsequent formats, so
 207 // check with a selection of longer patterns.
 208 //
 209 void FormatConverterTestCase::testLonger()
 210 {
 211     struct {
 212         const char *input;
 213         const char *expectedScanf;
 214         const char *expectedWcharUnix;
 215         const char *expectedWcharWindows;
 216         const char *expectedUtf8;
 217     } formats[] = {
 218         { "%d",     "%d",     "%d",     "%d",    "%d"    },
 219         { "%*hd",   "%*hd",   "%*hd",   "%*hd",  "%*hd"  },
 220         { "%.4ld",  "%.4ld",  "%.4ld",  "%.4ld", "%.4ld" },
 221         { "%-.*s",  "%-.*ls", "%-.*ls", "%-.*s", "%-.*s" },
 222         { "%.*hs",  "%.*hs",  "%.*ls",  "%.*s",  "%.*s"  },
 223         { "%-.9ls", "%-.9ls", "%-.9ls", "%-.9s", "%-.9s" },
 224         { "%-*c",   "%-*lc",  "%-*lc",  "%-*c",  "%-*lc" },
 225         { "%3hc",   "%3hc",   "%3lc",   "%3c",   "%3lc"  },
 226         { "%-5lc",  "%-5lc",  "%-5lc",  "%-5c",  "%-5lc" }
 227     };
 228     size_t i, j;
 229
 230     // test all possible pairs of the above patterns
 231     for (i = 0; i < WXSIZEOF(formats); i++) {
 232         if (formats[i].input) {
 233             wxString input(formats[i].input);
 234             wxString expectedScanf(formats[i].expectedScanf);
 235             wxString expectedUtf8(formats[i].expectedUtf8);
 236             wxString expectedWcharUnix(formats[i].expectedWcharUnix);
 237             wxString expectedWcharWindows(formats[i].expectedWcharWindows);
 238
 239             for (j = 0; j < WXSIZEOF(formats); j++)
 240                 if (formats[j].input)
 241                     check(input + formats[j].input,
 242                           expectedScanf + formats[j].expectedScanf,
 243                           expectedUtf8 + formats[j].expectedUtf8,
 244                           expectedWcharUnix + formats[j].expectedWcharUnix,
 245                           expectedWcharWindows + formats[j].expectedWcharWindows);
 246         }
 247     }
 248 }
 249
 250 void FormatConverterTestCase::doTest(const char *input,
 251                                      const char *expectedScanf,
 252                                      const char *expectedUtf8,
 253                                      const char *expectedWcharUnix,
 254                                      const char *expectedWcharWindows)
 255 {
 256     static const wxChar *flag_width[] =
 257         { wxT(""), wxT("*"), wxT("10"), wxT("-*"), wxT("-10"), NULL };
 258     static const wxChar *precision[] =
 259         { wxT(""), wxT(".*"), wxT(".10"), NULL };
 260     static const wxChar *empty[] =
 261         { wxT(""), NULL };
 262
 263     // no precision for %c or %C
 264     const wxChar **precs = wxTolower(input[wxStrlen(input)-1]) == wxT('c') ?
 265         empty : precision;
 266
 267     wxString fmt(wxT("%"));
 268
 269     // try the test for a variety of combinations of flag, width and precision
 270     for (const wxChar **prec = precs; *prec; prec++)
 271         for (const wxChar **width = flag_width; *width; width++)
 272             check(fmt + *width + *prec + input,
 273                   fmt + *width + *prec + expectedScanf,
 274                   fmt + *width + *prec + expectedUtf8,
 275                   fmt + *width + *prec + expectedWcharUnix,
 276                   fmt + *width + *prec + expectedWcharWindows);
 277 }
 278
 279 void FormatConverterTestCase::check(const wxString& input,
 280                                     const wxString& expectedScanf,
 281                                     const wxString& expectedUtf8,
 282                                     const wxString& expectedWcharUnix,
 283                                     const wxString& expectedWcharWindows)
 284 {
 285     // all of them are unused in some build configurations
 286     wxUnusedVar(expectedScanf);
 287     wxUnusedVar(expectedUtf8);
 288     wxUnusedVar(expectedWcharUnix);
 289     wxUnusedVar(expectedWcharWindows);
 290
 291     wxString result, msg;
 292
 293 #ifndef __WINDOWS__
 294     // on windows, wxScanf() string needs no modifications
 295     result = wxScanfConvertFormatW(input.wc_str());
 296
 297     msg = wxT("input: '") + input +
 298           wxT("', result (scanf): '") + result +
 299           wxT("', expected: '") + expectedScanf + wxT("'");
 300     CPPUNIT_ASSERT_MESSAGE(string(msg.mb_str()), result == expectedScanf);
 301 #endif // !__WINDOWS__
 302
 303 #if wxUSE_UNICODE_UTF8
 304     result = (const char*)wxFormatString(input);
 305
 306     msg = wxT("input: '") + input +
 307           wxT("', result (UTF-8): '") + result +
 308           wxT("', expected: '") + expectedUtf8 + wxT("'");
 309     CPPUNIT_ASSERT_MESSAGE(string(msg.mb_str()), result == expectedUtf8);
 310 #endif // wxUSE_UNICODE_UTF8
 311
 312 #if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
 313     result = (const wchar_t*)wxFormatString(input);
 314
 315 #ifdef __WINDOWS__
 316     wxString expectedWchar(expectedWcharWindows);
 317 #else
 318     wxString expectedWchar(expectedWcharUnix);
 319 #endif
 320
 321     msg = wxT("input: '") + input +
 322           wxT("', result (wchar_t): '") + result +
 323           wxT("', expected: '") + expectedWchar + wxT("'");
 324     CPPUNIT_ASSERT_MESSAGE(string(msg.mb_str()), result == expectedWchar);
 325 #endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
 326 }
 327
 328
 329 // register in the unnamed registry so that these tests are run by default
 330 CPPUNIT_TEST_SUITE_REGISTRATION(FormatConverterTestCase);
 331
 332 // also include in it's own registry so that these tests can be run alone
 333 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION(FormatConverterTestCase,
 334                                       "FormatConverterTestCase");
 335