icuSources/test/intltest/dtfmtrtts.cpp

   1 /***********************************************************************
   2  * COPYRIGHT:
   3  * Copyright (c) 1997-2010, International Business Machines Corporation
   4  * and others. All Rights Reserved.
   5  ***********************************************************************/
   6
   7 #include "unicode/utypes.h"
   8
   9 #if !UCONFIG_NO_FORMATTING
  10
  11 #include "unicode/datefmt.h"
  12 #include "unicode/smpdtfmt.h"
  13 #include "unicode/gregocal.h"
  14 #include "dtfmtrtts.h"
  15 #include "caltest.h"
  16
  17 #include <stdio.h>
  18 #include <string.h>
  19
  20 // *****************************************************************************
  21 // class DateFormatRoundTripTest
  22 // *****************************************************************************
  23
  24 // Useful for turning up subtle bugs: Change the following to TRUE, recompile,
  25 // and run while at lunch.
  26 // Warning -- makes test run infinite loop!!!
  27 #ifndef INFINITE
  28 #define INFINITE 0
  29 #endif
  30
  31 static const UVersionInfo ICU_452 = {4,5,2,0};
  32
  33 // Define this to test just a single locale
  34 //#define TEST_ONE_LOC  "cs_CZ"
  35
  36 // If SPARSENESS is > 0, we don't run each exhaustive possibility.
  37 // There are 24 total possible tests per each locale.  A SPARSENESS
  38 // of 12 means we run half of them.  A SPARSENESS of 23 means we run
  39 // 1 of them.  SPARSENESS _must_ be in the range 0..23.
  40 int32_t DateFormatRoundTripTest::SPARSENESS = 0;
  41 int32_t DateFormatRoundTripTest::TRIALS = 4;
  42 int32_t DateFormatRoundTripTest::DEPTH = 5;
  43
  44 DateFormatRoundTripTest::DateFormatRoundTripTest() : dateFormat(0) {
  45 }
  46
  47 DateFormatRoundTripTest::~DateFormatRoundTripTest() {
  48     delete dateFormat;
  49 }
  50
  51 #define CASE(id,test) case id: name = #test; if (exec) { logln(#test "---"); logln((UnicodeString)""); test(); } break;
  52
  53 void
  54 DateFormatRoundTripTest::runIndexedTest( int32_t index, UBool exec, const char* &name, char* par )
  55 {
  56     optionv = (par && *par=='v');
  57     switch (index) {
  58         CASE(0,TestDateFormatRoundTrip)
  59         CASE(1, TestCentury)
  60         default: name = ""; break;
  61     }
  62 }
  63
  64 UBool
  65 DateFormatRoundTripTest::failure(UErrorCode status, const char* msg)
  66 {
  67     if(U_FAILURE(status)) {
  68         errln(UnicodeString("FAIL: ") + msg + " failed, error " + u_errorName(status));
  69         return TRUE;
  70     }
  71
  72     return FALSE;
  73 }
  74
  75 UBool
  76 DateFormatRoundTripTest::failure(UErrorCode status, const char* msg, const UnicodeString& str)
  77 {
  78     if(U_FAILURE(status)) {
  79         UnicodeString escaped;
  80         escape(str,escaped);
  81         errln(UnicodeString("FAIL: ") + msg + " failed, error " + u_errorName(status) + ", str=" + escaped);
  82         return TRUE;
  83     }
  84
  85     return FALSE;
  86 }
  87
  88 void DateFormatRoundTripTest::TestCentury()
  89 {
  90     UErrorCode status = U_ZERO_ERROR;
  91     Locale locale("es_PA");
  92     UnicodeString pattern = "MM/dd/yy hh:mm:ss a z";
  93     SimpleDateFormat fmt(pattern, locale, status);
  94     if (U_FAILURE(status)) {
  95         dataerrln("Fail: construct SimpleDateFormat: %s", u_errorName(status));
  96         return;
  97     }
  98     UDate date[] = {-55018555891590.05, 0, 0};
  99     UnicodeString result[2];
 100
 101     fmt.format(date[0], result[0]);
 102     date[1] = fmt.parse(result[0], status);
 103     fmt.format(date[1], result[1]);
 104     date[2] = fmt.parse(result[1], status);
 105
 106     /* This test case worked OK by accident before.  date[1] != date[0],
 107      * because we use -80/+20 year window for 2-digit year parsing.
 108      * (date[0] is in year 1926, date[1] is in year 2026.)  result[1] set
 109      * by the first format call returns "07/13/26 07:48:28 p.m. PST",
 110      * which is correct, because DST was not used in year 1926 in zone
 111      * America/Los_Angeles.  When this is parsed, date[1] becomes a time
 112      * in 2026, which is "07/13/26 08:48:28 p.m. PDT".  There was a zone
 113      * offset calculation bug that observed DST in 1926, which was resolved.
 114      * Before the bug was resolved, result[0] == result[1] was true,
 115      * but after the bug fix, the expected result is actually
 116      * result[0] != result[1]. -Yoshito
 117      */
 118     /* TODO: We need to review this code and clarify what we really
 119      * want to test here.
 120      */
 121     //if (date[1] != date[2] || result[0] != result[1]) {
 122     if (date[1] != date[2]) {
 123         errln("Round trip failure: \"%S\" (%f), \"%S\" (%f)", result[0].getBuffer(), date[1], result[1].getBuffer(), date[2]);
 124     }
 125 }
 126
 127 // ==
 128 void DateFormatRoundTripTest::TestDateFormatRoundTrip()
 129 {
 130     UErrorCode status = U_ZERO_ERROR;
 131
 132     getFieldCal = Calendar::createInstance(status);
 133     if (U_FAILURE(status)) {
 134         dataerrln("Fail: Calendar::createInstance: %s", u_errorName(status));
 135         return;
 136     }
 137
 138
 139     int32_t locCount = 0;
 140     const Locale *avail = DateFormat::getAvailableLocales(locCount);
 141     logln("DateFormat available locales: %d", locCount);
 142     if(quick) {
 143         SPARSENESS = 18;
 144         logln("Quick mode: only testing SPARSENESS = 18");
 145     }
 146     TimeZone *tz = TimeZone::createDefault();
 147     UnicodeString temp;
 148     logln("Default TimeZone:             " + tz->getID(temp));
 149     delete tz;
 150
 151 #ifdef TEST_ONE_LOC // define this to just test ONE locale.
 152     Locale loc(TEST_ONE_LOC);
 153     test(loc);
 154 #if INFINITE
 155     for(;;) {
 156       test(loc);
 157     }
 158 #endif
 159
 160 #else
 161 # if INFINITE
 162     // Special infinite loop test mode for finding hard to reproduce errors
 163     Locale loc = Locale::getDefault();
 164     logln("ENTERING INFINITE TEST LOOP FOR Locale: " + loc.getDisplayName(temp));
 165     for(;;)
 166         test(loc);
 167 # else
 168     test(Locale::getDefault());
 169
 170 #if 1
 171     // installed locales
 172     for (int i=0; i < locCount; ++i) {
 173             test(avail[i]);
 174     }
 175 #endif
 176
 177 #if 1
 178     // special locales
 179     int32_t jCount = CalendarTest::testLocaleCount();
 180     for (int32_t j=0; j < jCount; ++j) {
 181         test(Locale(CalendarTest::testLocaleID(j)));
 182     }
 183 #endif
 184
 185 # endif
 186 #endif
 187
 188     delete getFieldCal;
 189 }
 190
 191 static const char *styleName(DateFormat::EStyle s)
 192 {
 193     switch(s)
 194     {
 195     case DateFormat::SHORT: return "SHORT";
 196     case DateFormat::MEDIUM: return "MEDIUM";
 197     case DateFormat::LONG: return "LONG";
 198     case DateFormat::FULL: return "FULL";
 199 //  case DateFormat::DEFAULT: return "DEFAULT";
 200     case DateFormat::DATE_OFFSET: return "DATE_OFFSET";
 201     case DateFormat::NONE: return "NONE";
 202     case DateFormat::DATE_TIME: return "DATE_TIME";
 203     default: return "Unknown";
 204     }
 205 }
 206
 207 void DateFormatRoundTripTest::test(const Locale& loc)
 208 {
 209     UnicodeString temp;
 210 #if !INFINITE
 211     logln("Locale: " + loc.getDisplayName(temp));
 212 #endif
 213
 214     // Total possibilities = 24
 215     //  4 date
 216     //  4 time
 217     //  16 date-time
 218     UBool TEST_TABLE [24];//= new boolean[24];
 219     int32_t i = 0;
 220     for(i = 0; i < 24; ++i)
 221         TEST_TABLE[i] = TRUE;
 222
 223     // If we have some sparseness, implement it here.  Sparseness decreases
 224     // test time by eliminating some tests, up to 23.
 225     for(i = 0; i < SPARSENESS; ) {
 226         int random = (int)(randFraction() * 24);
 227         if (random >= 0 && random < 24 && TEST_TABLE[i]) {
 228             TEST_TABLE[i] = FALSE;
 229             ++i;
 230         }
 231     }
 232
 233     int32_t itable = 0;
 234     int32_t style = 0;
 235     for(style = DateFormat::FULL; style <= DateFormat::SHORT; ++style) {
 236         if(TEST_TABLE[itable++]) {
 237             logln("Testing style " + UnicodeString(styleName((DateFormat::EStyle)style)));
 238             DateFormat *df = DateFormat::createDateInstance((DateFormat::EStyle)style, loc);
 239             if(df == NULL) {
 240               errln(UnicodeString("Could not DF::createDateInstance ") + UnicodeString(styleName((DateFormat::EStyle)style)) +      " Locale: " + loc.getDisplayName(temp));
 241             } else {
 242               test(df, loc);
 243               delete df;
 244             }
 245         }
 246     }
 247
 248     for(style = DateFormat::FULL; style <= DateFormat::SHORT; ++style) {
 249         if (TEST_TABLE[itable++]) {
 250           logln("Testing style " + UnicodeString(styleName((DateFormat::EStyle)style)));
 251             DateFormat *df = DateFormat::createTimeInstance((DateFormat::EStyle)style, loc);
 252             if(df == NULL) {
 253               errln(UnicodeString("Could not DF::createTimeInstance ") + UnicodeString(styleName((DateFormat::EStyle)style)) + " Locale: " + loc.getDisplayName(temp));
 254             } else {
 255               test(df, loc, TRUE);
 256               delete df;
 257             }
 258         }
 259     }
 260
 261     for(int32_t dstyle = DateFormat::FULL; dstyle <= DateFormat::SHORT; ++dstyle) {
 262         for(int32_t tstyle = DateFormat::FULL; tstyle <= DateFormat::SHORT; ++tstyle) {
 263             if(TEST_TABLE[itable++]) {
 264                 logln("Testing dstyle" + UnicodeString(styleName((DateFormat::EStyle)dstyle)) + ", tstyle" + UnicodeString(styleName((DateFormat::EStyle)tstyle)) );
 265                 DateFormat *df = DateFormat::createDateTimeInstance((DateFormat::EStyle)dstyle, (DateFormat::EStyle)tstyle, loc);
 266                 if(df == NULL) {
 267                     dataerrln(UnicodeString("Could not DF::createDateTimeInstance ") + UnicodeString(styleName((DateFormat::EStyle)dstyle)) + ", tstyle" + UnicodeString(styleName((DateFormat::EStyle)tstyle))    + "Locale: " + loc.getDisplayName(temp));
 268                 } else {
 269                     test(df, loc);
 270                     delete df;
 271                 }
 272             }
 273         }
 274     }
 275 }
 276
 277 void DateFormatRoundTripTest::test(DateFormat *fmt, const Locale &origLocale, UBool timeOnly)
 278 {
 279     UnicodeString pat;
 280     if(fmt->getDynamicClassID() != SimpleDateFormat::getStaticClassID()) {
 281         errln("DateFormat wasn't a SimpleDateFormat");
 282         return;
 283     }
 284
 285     UBool isGregorian = FALSE;
 286     UErrorCode minStatus = U_ZERO_ERROR;
 287     UDate minDate = CalendarTest::minDateOfCalendar(*fmt->getCalendar(), isGregorian, minStatus);
 288     if(U_FAILURE(minStatus)) {
 289       errln((UnicodeString)"Failure getting min date for " + origLocale.getName());
 290       return;
 291     }
 292     //logln(UnicodeString("Min date is ") + fullFormat(minDate)  + " for " + origLocale.getName());
 293
 294     pat = ((SimpleDateFormat*)fmt)->toPattern(pat);
 295
 296     // NOTE TO MAINTAINER
 297     // This indexOf check into the pattern needs to be refined to ignore
 298     // quoted characters.  Currently, this isn't a problem with the locale
 299     // patterns we have, but it may be a problem later.
 300
 301     UBool hasEra = (pat.indexOf(UnicodeString("G")) != -1);
 302     UBool hasZoneDisplayName = (pat.indexOf(UnicodeString("z")) != -1) || (pat.indexOf(UnicodeString("v")) != -1)
 303         || (pat.indexOf(UnicodeString("V")) != -1);
 304
 305     // Because patterns contain incomplete data representing the Date,
 306     // we must be careful of how we do the roundtrip.  We start with
 307     // a randomly generated Date because they're easier to generate.
 308     // From this we get a string.  The string is our real starting point,
 309     // because this string should parse the same way all the time.  Note
 310     // that it will not necessarily parse back to the original date because
 311     // of incompleteness in patterns.  For example, a time-only pattern won't
 312     // parse back to the same date.
 313
 314     //try {
 315         for(int i = 0; i < TRIALS; ++i) {
 316             UDate *d                = new UDate    [DEPTH];
 317             UnicodeString *s    = new UnicodeString[DEPTH];
 318
 319             if(isGregorian == TRUE) {
 320               d[0] = generateDate();
 321             } else {
 322               d[0] = generateDate(minDate);
 323             }
 324
 325             UErrorCode status = U_ZERO_ERROR;
 326
 327             // We go through this loop until we achieve a match or until
 328             // the maximum loop count is reached.  We record the points at
 329             // which the date and the string starts to match.  Once matching
 330             // starts, it should continue.
 331             int loop;
 332             int dmatch = 0; // d[dmatch].getTime() == d[dmatch-1].getTime()
 333             int smatch = 0; // s[smatch].equals(s[smatch-1])
 334             for(loop = 0; loop < DEPTH; ++loop) {
 335                 if (loop > 0)  {
 336                     d[loop] = fmt->parse(s[loop-1], status);
 337                     failure(status, "fmt->parse", s[loop-1]+" in locale: " + origLocale.getName());
 338                     status = U_ZERO_ERROR; /* any error would have been reported */
 339                 }
 340
 341                 s[loop] = fmt->format(d[loop], s[loop]);
 342
 343                 // For displaying which date is being tested
 344                 //logln(s[loop] + " = " + fullFormat(d[loop]));
 345
 346                 if(s[loop].length() == 0) {
 347                   errln("FAIL: fmt->format gave 0-length string in " + pat + " with number " + d[loop] + " in locale " + origLocale.getName());
 348                 }
 349
 350                 if(loop > 0) {
 351                     if(smatch == 0) {
 352                         UBool match = s[loop] == s[loop-1];
 353                         if(smatch == 0) {
 354                             if(match)
 355                                 smatch = loop;
 356                         }
 357                         else if( ! match)
 358                             errln("FAIL: String mismatch after match");
 359                     }
 360
 361                     if(dmatch == 0) {
 362                         // {sfb} watch out here, this might not work
 363                         UBool match = d[loop]/*.getTime()*/ == d[loop-1]/*.getTime()*/;
 364                         if(dmatch == 0) {
 365                             if(match)
 366                                 dmatch = loop;
 367                         }
 368                         else if( ! match)
 369                             errln("FAIL: Date mismatch after match");
 370                     }
 371
 372                     if(smatch != 0 && dmatch != 0)
 373                         break;
 374                 }
 375             }
 376             // At this point loop == DEPTH if we've failed, otherwise loop is the
 377             // max(smatch, dmatch), that is, the index at which we have string and
 378             // date matching.
 379
 380             // Date usually matches in 2.  Exceptions handled below.
 381             int maxDmatch = 2;
 382             int maxSmatch = 1;
 383             if (dmatch > maxDmatch) {
 384                 // Time-only pattern with zone information and a starting date in PST.
 385                 if(timeOnly && hasZoneDisplayName) {
 386                     int32_t startRaw, startDst;
 387                     fmt->getTimeZone().getOffset(d[0], FALSE, startRaw, startDst, status);
 388                     failure(status, "TimeZone::getOffset");
 389                     // if the start offset is greater than the offset on Jan 1, 1970
 390                     // in PST, then need one more round trip.  There are two cases
 391                     // fall into this category.  The start date is 1) DST or
 392                     // 2) LMT (GMT-07:52:58).
 393                     if (startRaw + startDst > -28800000) {
 394                         maxDmatch = 3;
 395                         maxSmatch = 2;
 396                     }
 397                 }
 398             }
 399
 400             // String usually matches in 1.  Exceptions are checked for here.
 401             if(smatch > maxSmatch) { // Don't compute unless necessary
 402                 UBool in0;
 403                 // Starts in BC, with no era in pattern
 404                 if( ! hasEra && getField(d[0], UCAL_ERA) == GregorianCalendar::BC)
 405                     maxSmatch = 2;
 406                 // Starts in DST, no year in pattern
 407                 else if((in0=fmt->getTimeZone().inDaylightTime(d[0], status)) && ! failure(status, "gettingDaylightTime") &&
 408                          pat.indexOf(UnicodeString("yyyy")) == -1)
 409                     maxSmatch = 2;
 410                 // If we start not in DST, but transition into DST
 411                 else if (!in0 &&
 412                          fmt->getTimeZone().inDaylightTime(d[1], status) && !failure(status, "gettingDaylightTime"))
 413                     maxSmatch = 2;
 414                 // Two digit year with no time zone change,
 415                 // unless timezone isn't used or we aren't close to the DST changover
 416                 else if (pat.indexOf(UnicodeString("y")) != -1
 417                         && pat.indexOf(UnicodeString("yyyy")) == -1
 418                         && getField(d[0], UCAL_YEAR)
 419                             != getField(d[dmatch], UCAL_YEAR)
 420                         && !failure(status, "error status [smatch>maxSmatch]")
 421                         && ((hasZoneDisplayName
 422                          && (fmt->getTimeZone().inDaylightTime(d[0], status)
 423                                 == fmt->getTimeZone().inDaylightTime(d[dmatch], status)
 424                             || getField(d[0], UCAL_MONTH) == UCAL_APRIL
 425                             || getField(d[0], UCAL_MONTH) == UCAL_OCTOBER))
 426                          || !hasZoneDisplayName)
 427                          )
 428                 {
 429                     maxSmatch = 2;
 430                 }
 431                 // If zone display name is used, fallback format might be used before 1970
 432                 else if (hasZoneDisplayName && d[0] < 0) {
 433                     maxSmatch = 2;
 434                 }
 435             }
 436
 437             if(dmatch > maxDmatch || smatch > maxSmatch) { // Special case for Japanese and Islamic (could have large negative years)
 438               const char *type = fmt->getCalendar()->getType();
 439               if(!strcmp(type,"japanese") || (!strcmp(type,"buddhist"))) {
 440                 maxSmatch = 4;
 441                 maxDmatch = 4;
 442               }
 443             }
 444
 445             // Use @v to see verbose results on successful cases
 446             UBool fail = (dmatch > maxDmatch || smatch > maxSmatch);
 447             if (optionv || fail) {
 448                 if (fail) {
 449                     errln(UnicodeString("\nFAIL: Pattern: ") + pat +
 450                           " in Locale: " + origLocale.getName());
 451                 } else {
 452                     errln(UnicodeString("\nOk: Pattern: ") + pat +
 453                           " in Locale: " + origLocale.getName());
 454                 }
 455
 456                 logln("Date iters until match=%d (max allowed=%d), string iters until match=%d (max allowed=%d)",
 457                       dmatch,maxDmatch, smatch, maxSmatch);
 458
 459                 for(int j = 0; j <= loop && j < DEPTH; ++j) {
 460                     UnicodeString temp;
 461                     FieldPosition pos(FieldPosition::DONT_CARE);
 462                     errln((j>0?" P> ":"    ") + fullFormat(d[j]) + " F> " +
 463                           escape(s[j], temp) + UnicodeString(" d=") + d[j] +
 464                           (j > 0 && d[j]/*.getTime()*/==d[j-1]/*.getTime()*/?" d==":"") +
 465                           (j > 0 && s[j] == s[j-1]?" s==":""));
 466                 }
 467             }
 468             delete[] d;
 469             delete[] s;
 470         }
 471     /*}
 472     catch (ParseException e) {
 473         errln("Exception: " + e.getMessage());
 474         logln(e.toString());
 475     }*/
 476 }
 477
 478 const UnicodeString& DateFormatRoundTripTest::fullFormat(UDate d) {
 479     UErrorCode ec = U_ZERO_ERROR;
 480     if (dateFormat == 0) {
 481         dateFormat = new SimpleDateFormat((UnicodeString)"EEE MMM dd HH:mm:ss.SSS zzz yyyy G", ec);
 482         if (U_FAILURE(ec) || dateFormat == 0) {
 483             fgStr = "[FAIL: SimpleDateFormat constructor]";
 484             delete dateFormat;
 485             dateFormat = 0;
 486             return fgStr;
 487         }
 488     }
 489     fgStr.truncate(0);
 490     dateFormat->format(d, fgStr);
 491     return fgStr;
 492 }
 493
 494 /**
 495  * Return a field of the given date
 496  */
 497 int32_t DateFormatRoundTripTest::getField(UDate d, int32_t f) {
 498     // Should be synchronized, but we're single threaded so it's ok
 499     UErrorCode status = U_ZERO_ERROR;
 500     getFieldCal->setTime(d, status);
 501     failure(status, "getfieldCal->setTime");
 502     int32_t ret = getFieldCal->get((UCalendarDateFields)f, status);
 503     failure(status, "getfieldCal->get");
 504     return ret;
 505 }
 506
 507 UnicodeString& DateFormatRoundTripTest::escape(const UnicodeString& src, UnicodeString& dst )
 508 {
 509     dst.remove();
 510     for (int32_t i = 0; i < src.length(); ++i) {
 511         UChar c = src[i];
 512         if(c < 0x0080)
 513             dst += c;
 514         else {
 515             dst += UnicodeString("[");
 516             char buf [8];
 517             sprintf(buf, "%#x", c);
 518             dst += UnicodeString(buf);
 519             dst += UnicodeString("]");
 520         }
 521     }
 522
 523     return dst;
 524 }
 525
 526 #define U_MILLIS_PER_YEAR (365.25 * 24 * 60 * 60 * 1000)
 527
 528 UDate DateFormatRoundTripTest::generateDate(UDate minDate)
 529 {
 530   // Bring range in conformance to generateDate() below.
 531   if(minDate < (U_MILLIS_PER_YEAR * -(4000-1970))) {
 532     minDate = (U_MILLIS_PER_YEAR * -(4000-1970));
 533   }
 534   for(int i=0;i<8;i++) {
 535     double a = randFraction();
 536
 537     // Range from (min) to  (8000-1970) AD
 538     double dateRange = (0.0 - minDate) + (U_MILLIS_PER_YEAR + (8000-1970));
 539
 540     a *= dateRange;
 541
 542     // Now offset from minDate
 543     a += minDate;
 544
 545     // Last sanity check
 546     if(a>=minDate) {
 547       return a;
 548     }
 549   }
 550   return minDate;
 551 }
 552
 553 UDate DateFormatRoundTripTest::generateDate()
 554 {
 555     double a = randFraction();
 556
 557     // Now 'a' ranges from 0..1; scale it to range from 0 to 8000 years
 558     a *= 8000;
 559
 560     // Range from (4000-1970) BC to (8000-1970) AD
 561     a -= 4000;
 562
 563     // Now scale up to ms
 564     a *= 365.25 * 24 * 60 * 60 * 1000;
 565
 566     //return new Date((long)a);
 567     return a;
 568 }
 569
 570 #endif /* #if !UCONFIG_NO_FORMATTING */
 571
 572 //eof