icuSources/test/intltest/tzbdtest.cpp

   1 /***********************************************************************
   2  * COPYRIGHT:
   3  * Copyright (c) 1997-2004, 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 "tzbdtest.h"
  12 #include "unicode/timezone.h"
  13 #include "unicode/simpletz.h"
  14 #include "unicode/gregocal.h"
  15 #include "putilimp.h"
  16
  17 void TimeZoneBoundaryTest::runIndexedTest( int32_t index, UBool exec, const char* &name, char* /*par*/ )
  18 {
  19     if (exec) logln("TestSuite TestTimeZoneBoundary");
  20     switch (index) {
  21         case 0:
  22             name = "TestBoundaries";
  23             if (exec) {
  24                 logln("TestBoundaries---"); logln("");
  25                 TestBoundaries();
  26             }
  27             break;
  28         case 1:
  29             name = "TestNewRules";
  30             if (exec) {
  31                 logln("TestNewRules---"); logln("");
  32                 TestNewRules();
  33             }
  34             break;
  35         case 2:
  36             name = "TestStepwise";
  37             if (exec) {
  38                 logln("TestStepwise---"); logln("");
  39                 TestStepwise();
  40             }
  41             break;
  42         default: name = ""; break;
  43     }
  44 }
  45
  46 // *****************************************************************************
  47 // class TimeZoneBoundaryTest
  48 // *****************************************************************************
  49
  50 TimeZoneBoundaryTest::TimeZoneBoundaryTest()
  51 :
  52 ONE_SECOND(1000),
  53 ONE_MINUTE(60 * ONE_SECOND),
  54 ONE_HOUR(60 * ONE_MINUTE),
  55 ONE_DAY(24 * ONE_HOUR),
  56 ONE_YEAR(uprv_floor(365.25 * ONE_DAY)),
  57 SIX_MONTHS(ONE_YEAR / 2)
  58 {
  59 }
  60
  61 const int32_t TimeZoneBoundaryTest::MONTH_LENGTH[] = {
  62     31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
  63 };
  64
  65 const UDate TimeZoneBoundaryTest::PST_1997_BEG = 860320800000.0;
  66
  67 const UDate TimeZoneBoundaryTest::PST_1997_END = 877856400000.0;
  68
  69 const UDate TimeZoneBoundaryTest::INTERVAL = 10;
  70
  71 // -------------------------------------
  72
  73 void
  74 TimeZoneBoundaryTest::findDaylightBoundaryUsingDate(UDate d, const char* startMode, UDate expectedBoundary)
  75 {
  76     UnicodeString str;
  77     if (dateToString(d, str).indexOf(startMode) == - 1) {
  78         logln(UnicodeString("Error: ") + startMode + " not present in " + str);
  79     }
  80     UDate min = d;
  81     UDate max = min + SIX_MONTHS;
  82     while ((max - min) > INTERVAL) {
  83         UDate mid = (min + max) / 2;
  84         UnicodeString* s = &dateToString(mid, str);
  85         if (s->indexOf(startMode) != - 1) {
  86             min = mid;
  87         }
  88         else {
  89             max = mid;
  90         }
  91     }
  92     logln("Date Before: " + showDate(min));
  93     logln("Date After:  " + showDate(max));
  94     UDate mindelta = expectedBoundary - min;
  95     UDate maxdelta = max - expectedBoundary;
  96     if (mindelta >= 0 &&
  97         mindelta <= INTERVAL &&
  98         maxdelta >= 0 &&
  99         maxdelta <= INTERVAL) logln(UnicodeString("PASS: Expected boundary at ") + expectedBoundary);
 100     else errln(UnicodeString("FAIL: Expected boundary at ") + expectedBoundary);
 101 }
 102
 103 // -------------------------------------
 104
 105 void
 106 TimeZoneBoundaryTest::findDaylightBoundaryUsingTimeZone(UDate d, UBool startsInDST, UDate expectedBoundary)
 107 {
 108     TimeZone *zone = TimeZone::createDefault();
 109     findDaylightBoundaryUsingTimeZone(d, startsInDST, expectedBoundary, zone);
 110     delete zone;
 111 }
 112
 113 // -------------------------------------
 114
 115 void
 116 TimeZoneBoundaryTest::findDaylightBoundaryUsingTimeZone(UDate d, UBool startsInDST, UDate expectedBoundary, TimeZone* tz)
 117 {
 118     UErrorCode status = U_ZERO_ERROR;
 119     UnicodeString str;
 120     UDate min = d;
 121     UDate max = min + SIX_MONTHS;
 122     if (tz->inDaylightTime(d, status) != startsInDST) {
 123         errln("FAIL: " + tz->getID(str) + " inDaylightTime(" + dateToString(d) + ") != " + (startsInDST ? "true" : "false"));
 124         startsInDST = !startsInDST;
 125     }
 126     if (failure(status, "TimeZone::inDaylightTime")) return;
 127     if (tz->inDaylightTime(max, status) == startsInDST) {
 128         errln("FAIL: " + tz->getID(str) + " inDaylightTime(" + dateToString(max) + ") != " + (startsInDST ? "false" : "true"));
 129         return;
 130     }
 131     if (failure(status, "TimeZone::inDaylightTime")) return;
 132     while ((max - min) > INTERVAL) {
 133         UDate mid = (min + max) / 2;
 134         UBool isIn = tz->inDaylightTime(mid, status);
 135         if (failure(status, "TimeZone::inDaylightTime")) return;
 136         if (isIn == startsInDST) {
 137             min = mid;
 138         }
 139         else {
 140             max = mid;
 141         }
 142     }
 143     logln(tz->getID(str) + " Before: " + showDate(min));
 144     logln(tz->getID(str) + " After:  " + showDate(max));
 145     UDate mindelta = expectedBoundary - min;
 146     UDate maxdelta = max - expectedBoundary;
 147     if (mindelta >= 0 &&
 148         mindelta <= INTERVAL &&
 149         maxdelta >= 0 &&
 150         maxdelta <= INTERVAL) logln(UnicodeString("PASS: Expected boundary at ") + expectedBoundary);
 151     else errln(UnicodeString("FAIL: Expected boundary at ") + expectedBoundary);
 152 }
 153
 154 // -------------------------------------
 155 /*
 156 UnicodeString*
 157 TimeZoneBoundaryTest::showDate(int32_t l)
 158 {
 159     return showDate(new Date(l));
 160 }
 161 */
 162 // -------------------------------------
 163
 164 UnicodeString
 165 TimeZoneBoundaryTest::showDate(UDate d)
 166 {
 167     int32_t y, m, day, h, min, sec;
 168     dateToFields(d, y, m, day, h, min, sec);
 169     return UnicodeString("") + y + "/" + showNN(m + 1) + "/" +
 170         showNN(day) + " " + showNN(h) + ":" + showNN(min) +
 171         " \"" + dateToString(d) + "\" = " + uprv_floor(d+0.5);
 172 }
 173
 174 // -------------------------------------
 175
 176 UnicodeString
 177 TimeZoneBoundaryTest::showNN(int32_t n)
 178 {
 179     UnicodeString nStr;
 180     if (n < 10) {
 181         nStr += UnicodeString("0", "");
 182     }
 183     return nStr + n;
 184 }
 185
 186 // -------------------------------------
 187
 188 void
 189 TimeZoneBoundaryTest::verifyDST(UDate d, TimeZone* time_zone, UBool expUseDaylightTime, UBool expInDaylightTime, UDate expZoneOffset, UDate expDSTOffset)
 190 {
 191     UnicodeString str;
 192     UErrorCode status = U_ZERO_ERROR;
 193     logln("-- Verifying time " + dateToString(d) + " in zone " + time_zone->getID(str));
 194     if (time_zone->inDaylightTime(d, status) == expInDaylightTime)
 195         logln(UnicodeString("PASS: inDaylightTime = ") + (time_zone->inDaylightTime(d, status)?"true":"false"));
 196     else errln(UnicodeString("FAIL: inDaylightTime = ") + (time_zone->inDaylightTime(d, status)?"true":"false"));
 197     if (failure(status, "TimeZone::inDaylightTime")) return;
 198     if (time_zone->useDaylightTime() == expUseDaylightTime)
 199         logln(UnicodeString("PASS: useDaylightTime = ") + (time_zone->useDaylightTime()?"true":"false"));
 200     else errln(UnicodeString("FAIL: useDaylightTime = ") + (time_zone->useDaylightTime()?"true":"false"));
 201     if (time_zone->getRawOffset() == expZoneOffset) logln(UnicodeString("PASS: getRawOffset() = ") + (expZoneOffset / ONE_HOUR));
 202     else errln(UnicodeString("FAIL: getRawOffset() = ") + (time_zone->getRawOffset() / ONE_HOUR) + "; expected " + (expZoneOffset / ONE_HOUR));
 203     GregorianCalendar *gc = new GregorianCalendar(time_zone->clone(), status);
 204     gc->setTime(d, status);
 205     if (failure(status, "GregorianCalendar::setTime")) return;
 206     int32_t offset = time_zone->getOffset((uint8_t)gc->get(UCAL_ERA, status),
 207         gc->get(UCAL_YEAR, status), gc->get(UCAL_MONTH, status),
 208         gc->get(UCAL_DATE, status), (uint8_t)gc->get(UCAL_DAY_OF_WEEK, status),
 209         ((gc->get(UCAL_HOUR_OF_DAY, status) * 60 + gc->get(UCAL_MINUTE, status)) * 60 + gc->get(UCAL_SECOND, status)) * 1000 + gc->get(UCAL_MILLISECOND, status),
 210         status);
 211     if (failure(status, "GregorianCalendar::get")) return;
 212     if (offset == expDSTOffset) logln(UnicodeString("PASS: getOffset() = ") + (offset / ONE_HOUR));
 213     else errln(UnicodeString("FAIL: getOffset() = ") + (offset / ONE_HOUR) + "; expected " + (expDSTOffset / ONE_HOUR));
 214     delete gc;
 215 }
 216
 217 // -------------------------------------
 218
 219 /**
 220  * Test the behavior of SimpleTimeZone at the transition into and out of DST.
 221  * Use a binary search to find boundaries.
 222  */
 223 void
 224 TimeZoneBoundaryTest::TestBoundaries()
 225 {
 226 #if 1
 227     {
 228         logln("--- Test a ---");
 229         UDate d = date(97, UCAL_APRIL, 6);
 230         TimeZone *z = TimeZone::createTimeZone("PST");
 231         for (int32_t i = 60; i <= 180; i += 15) {
 232             UBool inDST = (i >= 120);
 233             UDate e = d + i * 60 * 1000;
 234             verifyDST(e, z, TRUE, inDST, - 8 * ONE_HOUR, inDST ? - 7 * ONE_HOUR: - 8 * ONE_HOUR);
 235         }
 236         delete z;
 237     }
 238 #endif
 239 #if 1
 240     {
 241         logln("--- Test b ---");
 242         TimeZone *tz;
 243         TimeZone::setDefault(*(tz = TimeZone::createTimeZone("PST")));
 244         delete tz;
 245         logln("========================================");
 246         findDaylightBoundaryUsingDate(date(97, 0, 1), "PST", PST_1997_BEG);
 247         logln("========================================");
 248         findDaylightBoundaryUsingDate(date(97, 6, 1), "PDT", PST_1997_END);
 249     }
 250 #endif
 251 #if 1
 252     {
 253         logln("--- Test c ---");
 254         logln("========================================");
 255         TimeZone* z = TimeZone::createTimeZone("Australia/Adelaide");
 256         findDaylightBoundaryUsingTimeZone(date(97, 0, 1), TRUE, 859653000000.0, z);
 257         logln("========================================");
 258         findDaylightBoundaryUsingTimeZone(date(97, 6, 1), FALSE, 877797000000.0, z);
 259         delete z;
 260     }
 261 #endif
 262 #if 1
 263     {
 264         logln("--- Test d ---");
 265         logln("========================================");
 266         findDaylightBoundaryUsingTimeZone(date(97, 0, 1), FALSE, PST_1997_BEG);
 267         logln("========================================");
 268         findDaylightBoundaryUsingTimeZone(date(97, 6, 1), TRUE, PST_1997_END);
 269     }
 270 #endif
 271 #if 0
 272     {
 273         logln("--- Test e ---");
 274         TimeZone *z = TimeZone::createDefault();
 275         logln(UnicodeString("") + z->getOffset(1, 97, 3, 4, 6, 0) + " " + date(97, 3, 4));
 276         logln(UnicodeString("") + z->getOffset(1, 97, 3, 5, 7, 0) + " " + date(97, 3, 5));
 277         logln(UnicodeString("") + z->getOffset(1, 97, 3, 6, 1, 0) + " " + date(97, 3, 6));
 278         logln(UnicodeString("") + z->getOffset(1, 97, 3, 7, 2, 0) + " " + date(97, 3, 7));
 279         delete z;
 280     }
 281 #endif
 282 }
 283
 284 // -------------------------------------
 285
 286 void
 287 TimeZoneBoundaryTest::testUsingBinarySearch(SimpleTimeZone* tz, UDate d, UDate expectedBoundary)
 288 {
 289     UErrorCode status = U_ZERO_ERROR;
 290     UDate min = d;
 291     UDate max = min + SIX_MONTHS;
 292     UBool startsInDST = tz->inDaylightTime(d, status);
 293     if (failure(status, "SimpleTimeZone::inDaylightTime")) return;
 294     if (tz->inDaylightTime(max, status) == startsInDST) {
 295         logln("Error: inDaylightTime(" + dateToString(max) + ") != " + ((!startsInDST)?"true":"false"));
 296     }
 297     if (failure(status, "SimpleTimeZone::inDaylightTime")) return;
 298     while ((max - min) > INTERVAL) {
 299         UDate mid = (min + max) / 2;
 300         if (tz->inDaylightTime(mid, status) == startsInDST) {
 301             min = mid;
 302         }
 303         else {
 304             max = mid;
 305         }
 306         if (failure(status, "SimpleTimeZone::inDaylightTime")) return;
 307     }
 308     logln("Binary Search Before: " + showDate(min));
 309     logln("Binary Search After:  " + showDate(max));
 310     UDate mindelta = expectedBoundary - min;
 311     UDate maxdelta = max - expectedBoundary;
 312     if (mindelta >= 0 &&
 313         mindelta <= INTERVAL &&
 314         maxdelta >= 0 &&
 315         maxdelta <= INTERVAL) logln(UnicodeString("PASS: Expected boundary at ") + expectedBoundary);
 316     else errln(UnicodeString("FAIL: Expected boundary at ") + expectedBoundary);
 317 }
 318
 319 // -------------------------------------
 320
 321 /**
 322  * Test the handling of the "new" rules; that is, rules other than nth Day of week.
 323  */
 324 void
 325 TimeZoneBoundaryTest::TestNewRules()
 326 {
 327 #if 1
 328     {
 329         UErrorCode status = U_ZERO_ERROR;
 330         SimpleTimeZone *tz;
 331         logln("-----------------------------------------------------------------");
 332         logln("Aug 2ndTues .. Mar 15");
 333         tz = new SimpleTimeZone(- 8 * (int32_t)ONE_HOUR, "Test_1", UCAL_AUGUST, 2, UCAL_TUESDAY, 2 * (int32_t)ONE_HOUR, UCAL_MARCH, 15, 0, 2 * (int32_t)ONE_HOUR, status);
 334         logln("========================================");
 335         testUsingBinarySearch(tz, date(97, 0, 1), 858416400000.0);
 336         logln("========================================");
 337         testUsingBinarySearch(tz, date(97, 6, 1), 871380000000.0);
 338         delete tz;
 339         logln("-----------------------------------------------------------------");
 340         logln("Apr Wed>=14 .. Sep Sun<=20");
 341         tz = new SimpleTimeZone(- 8 * (int32_t)ONE_HOUR, "Test_2", UCAL_APRIL, 14, - UCAL_WEDNESDAY, 2 *(int32_t)ONE_HOUR, UCAL_SEPTEMBER, - 20, - UCAL_SUNDAY, 2 * (int32_t)ONE_HOUR, status);
 342         logln("========================================");
 343         testUsingBinarySearch(tz, date(97, 0, 1), 861184800000.0);
 344         logln("========================================");
 345         testUsingBinarySearch(tz, date(97, 6, 1), 874227600000.0);
 346         delete tz;
 347     }
 348 #endif
 349 }
 350
 351 // -------------------------------------
 352
 353 void
 354 TimeZoneBoundaryTest::findBoundariesStepwise(int32_t year, UDate interval, TimeZone* z, int32_t expectedChanges)
 355 {
 356     UErrorCode status = U_ZERO_ERROR;
 357     UnicodeString str;
 358     UDate d = date(year - 1900, UCAL_JANUARY, 1);
 359     UDate time = d;
 360     UDate limit = time + ONE_YEAR + ONE_DAY;
 361     UBool lastState = z->inDaylightTime(d, status);
 362     if (failure(status, "TimeZone::inDaylightTime")) return;
 363     int32_t changes = 0;
 364     logln(UnicodeString("-- Zone ") + z->getID(str) + " starts in " + year + " with DST = " + (lastState?"true":"false"));
 365     logln(UnicodeString("useDaylightTime = ") + (z->useDaylightTime()?"true":"false"));
 366     while (time < limit) {
 367         d = time;
 368         UBool state = z->inDaylightTime(d, status);
 369         if (failure(status, "TimeZone::inDaylightTime")) return;
 370         if (state != lastState) {
 371             logln(UnicodeString(state ? "Entry ": "Exit ") + "at " + d);
 372             lastState = state;++changes;
 373         }
 374         time += interval;
 375     }
 376     if (changes == 0) {
 377         if (!lastState &&
 378             !z->useDaylightTime()) logln("No DST");
 379         else errln("FAIL: DST all year, or no DST with true useDaylightTime");
 380     }
 381     else if (changes != 2) {
 382         errln(UnicodeString("FAIL: ") + changes + " changes seen; should see 0 or 2");
 383     }
 384     else if (!z->useDaylightTime()) {
 385         errln("FAIL: useDaylightTime false but 2 changes seen");
 386     }
 387     if (changes != expectedChanges) {
 388         errln(UnicodeString("FAIL: ") + changes + " changes seen; expected " + expectedChanges);
 389     }
 390 }
 391
 392 // -------------------------------------
 393
 394 /**
 395  * This test is problematic. It makes assumptions about the behavior
 396  * of specific zones. Since ICU's zone table is based on the Olson
 397  * zones (the UNIX zones), and those change from time to time, this
 398  * test can fail after a zone table update. If that happens, the
 399  * selected zones need to be updated to have the behavior
 400  * expected. That is, they should have DST, not have DST, and have DST
 401  * -- other than that this test isn't picky. 12/3/99 aliu
 402  *
 403  * Test the behavior of SimpleTimeZone at the transition into and out of DST.
 404  * Use a stepwise march to find boundaries.
 405  */
 406 void
 407 TimeZoneBoundaryTest::TestStepwise()
 408 {
 409     TimeZone *zone =  TimeZone::createTimeZone("America/New_York");
 410     findBoundariesStepwise(1997, ONE_DAY, zone, 2);
 411     delete zone;
 412     zone = TimeZone::createTimeZone("UTC"); // updated 12/3/99 aliu
 413     findBoundariesStepwise(1997, ONE_DAY, zone, 0);
 414     delete zone;
 415     zone = TimeZone::createTimeZone("Australia/Adelaide");
 416     findBoundariesStepwise(1997, ONE_DAY, zone, 2);
 417     delete zone;
 418 }
 419
 420 #endif /* #if !UCONFIG_NO_FORMATTING */