1 /***********************************************************************
2 * COPYRIGHT:
3 * Copyright (c) 1997-2009, 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 // Define this to test just a single locale
32 //#define TEST_ONE_LOC "cs_CZ"
33
34 // If SPARSENESS is > 0, we don't run each exhaustive possibility.
35 // There are 24 total possible tests per each locale. A SPARSENESS
36 // of 12 means we run half of them. A SPARSENESS of 23 means we run
37 // 1 of them. SPARSENESS _must_ be in the range 0..23.
38 int32_t DateFormatRoundTripTest::SPARSENESS = 0;
39 int32_t DateFormatRoundTripTest::TRIALS = 4;
40 int32_t DateFormatRoundTripTest::DEPTH = 5;
41
DateFormatRoundTripTest()42 DateFormatRoundTripTest::DateFormatRoundTripTest() : dateFormat(0) {
43 }
44
~DateFormatRoundTripTest()45 DateFormatRoundTripTest::~DateFormatRoundTripTest() {
46 delete dateFormat;
47 }
48
49 #define CASE(id,test) case id: name = #test; if (exec) { logln(#test "---"); logln((UnicodeString)""); test(); } break;
50
51 void
runIndexedTest(int32_t index,UBool exec,const char * & name,char * par)52 DateFormatRoundTripTest::runIndexedTest( int32_t index, UBool exec, const char* &name, char* par )
53 {
54 optionv = (par && *par=='v');
55 switch (index) {
56 CASE(0,TestDateFormatRoundTrip)
57 CASE(1, TestCentury)
58 default: name = ""; break;
59 }
60 }
61
62 UBool
failure(UErrorCode status,const char * msg)63 DateFormatRoundTripTest::failure(UErrorCode status, const char* msg)
64 {
65 if(U_FAILURE(status)) {
66 errln(UnicodeString("FAIL: ") + msg + " failed, error " + u_errorName(status));
67 return TRUE;
68 }
69
70 return FALSE;
71 }
72
73 UBool
failure(UErrorCode status,const char * msg,const UnicodeString & str)74 DateFormatRoundTripTest::failure(UErrorCode status, const char* msg, const UnicodeString& str)
75 {
76 if(U_FAILURE(status)) {
77 UnicodeString escaped;
78 escape(str,escaped);
79 errln(UnicodeString("FAIL: ") + msg + " failed, error " + u_errorName(status) + ", str=" + escaped);
80 return TRUE;
81 }
82
83 return FALSE;
84 }
85
TestCentury()86 void DateFormatRoundTripTest::TestCentury()
87 {
88 UErrorCode status = U_ZERO_ERROR;
89 Locale locale("es_PA");
90 UnicodeString pattern = "MM/dd/yy hh:mm:ss a z";
91 SimpleDateFormat fmt(pattern, locale, status);
92 if(!assertSuccess("trying to construct", status))return;
93 UDate date[] = {-55018555891590.05, 0, 0};
94 UnicodeString result[2];
95
96 fmt.format(date[0], result[0]);
97 date[1] = fmt.parse(result[0], status);
98 fmt.format(date[1], result[1]);
99 date[2] = fmt.parse(result[1], status);
100
101 /* This test case worked OK by accident before. date[1] != date[0],
102 * because we use -80/+20 year window for 2-digit year parsing.
103 * (date[0] is in year 1926, date[1] is in year 2026.) result[1] set
104 * by the first format call returns "07/13/26 07:48:28 p.m. PST",
105 * which is correct, because DST was not used in year 1926 in zone
106 * America/Los_Angeles. When this is parsed, date[1] becomes a time
107 * in 2026, which is "07/13/26 08:48:28 p.m. PDT". There was a zone
108 * offset calculation bug that observed DST in 1926, which was resolved.
109 * Before the bug was resolved, result[0] == result[1] was true,
110 * but after the bug fix, the expected result is actually
111 * result[0] != result[1]. -Yoshito
112 */
113 /* TODO: We need to review this code and clarify what we really
114 * want to test here.
115 */
116 //if (date[1] != date[2] || result[0] != result[1]) {
117 if (date[1] != date[2]) {
118 errln("Round trip failure: \"%S\" (%f), \"%S\" (%f)", result[0].getBuffer(), date[1], result[1].getBuffer(), date[2]);
119 }
120 }
121
122 // ==
123
TestDateFormatRoundTrip()124 void DateFormatRoundTripTest::TestDateFormatRoundTrip()
125 {
126 UErrorCode status = U_ZERO_ERROR;
127
128 getFieldCal = Calendar::createInstance(status);
129 failure(status, "Calendar::createInstance");
130 if(!assertSuccess("trying to construct", status))return;
131
132
133 int32_t locCount = 0;
134 const Locale *avail = DateFormat::getAvailableLocales(locCount);
135 logln("DateFormat available locales: %d", locCount);
136 if(quick) {
137 SPARSENESS = 18;
138 logln("Quick mode: only testing SPARSENESS = 18");
139 }
140 TimeZone *tz = TimeZone::createDefault();
141 UnicodeString temp;
142 logln("Default TimeZone: " + tz->getID(temp));
143 delete tz;
144
145 #ifdef TEST_ONE_LOC // define this to just test ONE locale.
146 Locale loc(TEST_ONE_LOC);
147 test(loc);
148 #if INFINITE
149 for(;;) {
150 test(loc);
151 }
152 #endif
153
154 #else
155 # if INFINITE
156 // Special infinite loop test mode for finding hard to reproduce errors
157 Locale loc = Locale::getDefault();
158 logln("ENTERING INFINITE TEST LOOP FOR Locale: " + loc.getDisplayName(temp));
159 for(;;)
160 test(loc);
161 # else
162 test(Locale::getDefault());
163
164 #if 1
165 // installed locales
166 for (int i=0; i < locCount; ++i) {
167 test(avail[i]);
168 }
169 #endif
170
171 #if 1
172 // special locales
173 int32_t jCount = CalendarTest::testLocaleCount();
174 for (int32_t j=0; j < jCount; ++j) {
175 test(Locale(CalendarTest::testLocaleID(j)));
176 }
177 #endif
178
179 # endif
180 #endif
181
182 delete getFieldCal;
183 }
184
styleName(DateFormat::EStyle s)185 static const char *styleName(DateFormat::EStyle s)
186 {
187 switch(s)
188 {
189 case DateFormat::SHORT: return "SHORT";
190 case DateFormat::MEDIUM: return "MEDIUM";
191 case DateFormat::LONG: return "LONG";
192 case DateFormat::FULL: return "FULL";
193 // case DateFormat::DEFAULT: return "DEFAULT";
194 case DateFormat::DATE_OFFSET: return "DATE_OFFSET";
195 case DateFormat::NONE: return "NONE";
196 case DateFormat::DATE_TIME: return "DATE_TIME";
197 default: return "Unknown";
198 }
199 }
200
test(const Locale & loc)201 void DateFormatRoundTripTest::test(const Locale& loc)
202 {
203 UnicodeString temp;
204 #if !INFINITE
205 logln("Locale: " + loc.getDisplayName(temp));
206 #endif
207
208 // Total possibilities = 24
209 // 4 date
210 // 4 time
211 // 16 date-time
212 UBool TEST_TABLE [24];//= new boolean[24];
213 int32_t i = 0;
214 for(i = 0; i < 24; ++i)
215 TEST_TABLE[i] = TRUE;
216
217 // If we have some sparseness, implement it here. Sparseness decreases
218 // test time by eliminating some tests, up to 23.
219 for(i = 0; i < SPARSENESS; ) {
220 int random = (int)(randFraction() * 24);
221 if (random >= 0 && random < 24 && TEST_TABLE[i]) {
222 TEST_TABLE[i] = FALSE;
223 ++i;
224 }
225 }
226
227 int32_t itable = 0;
228 int32_t style = 0;
229 for(style = DateFormat::FULL; style <= DateFormat::SHORT; ++style) {
230 if(TEST_TABLE[itable++]) {
231 logln("Testing style " + UnicodeString(styleName((DateFormat::EStyle)style)));
232 DateFormat *df = DateFormat::createDateInstance((DateFormat::EStyle)style, loc);
233 if(df == NULL) {
234 errln(UnicodeString("Could not DF::createDateInstance ") + UnicodeString(styleName((DateFormat::EStyle)style)) + " Locale: " + loc.getDisplayName(temp));
235 } else {
236 test(df, loc);
237 delete df;
238 }
239 }
240 }
241
242 for(style = DateFormat::FULL; style <= DateFormat::SHORT; ++style) {
243 if (TEST_TABLE[itable++]) {
244 logln("Testing style " + UnicodeString(styleName((DateFormat::EStyle)style)));
245 DateFormat *df = DateFormat::createTimeInstance((DateFormat::EStyle)style, loc);
246 if(df == NULL) {
247 errln(UnicodeString("Could not DF::createTimeInstance ") + UnicodeString(styleName((DateFormat::EStyle)style)) + " Locale: " + loc.getDisplayName(temp));
248 } else {
249 test(df, loc, TRUE);
250 delete df;
251 }
252 }
253 }
254
255 for(int32_t dstyle = DateFormat::FULL; dstyle <= DateFormat::SHORT; ++dstyle) {
256 for(int32_t tstyle = DateFormat::FULL; tstyle <= DateFormat::SHORT; ++tstyle) {
257 if(TEST_TABLE[itable++]) {
258 logln("Testing dstyle" + UnicodeString(styleName((DateFormat::EStyle)dstyle)) + ", tstyle" + UnicodeString(styleName((DateFormat::EStyle)tstyle)) );
259 DateFormat *df = DateFormat::createDateTimeInstance((DateFormat::EStyle)dstyle, (DateFormat::EStyle)tstyle, loc);
260 if(df == NULL) {
261 dataerrln(UnicodeString("Could not DF::createDateTimeInstance ") + UnicodeString(styleName((DateFormat::EStyle)dstyle)) + ", tstyle" + UnicodeString(styleName((DateFormat::EStyle)tstyle)) + "Locale: " + loc.getDisplayName(temp));
262 } else {
263 test(df, loc);
264 delete df;
265 }
266 }
267 }
268 }
269 }
270
test(DateFormat * fmt,const Locale & origLocale,UBool timeOnly)271 void DateFormatRoundTripTest::test(DateFormat *fmt, const Locale &origLocale, UBool timeOnly)
272 {
273 UnicodeString pat;
274 if(fmt->getDynamicClassID() != SimpleDateFormat::getStaticClassID()) {
275 errln("DateFormat wasn't a SimpleDateFormat");
276 return;
277 }
278
279 UBool isGregorian = FALSE;
280 UErrorCode minStatus = U_ZERO_ERROR;
281 UDate minDate = CalendarTest::minDateOfCalendar(*fmt->getCalendar(), isGregorian, minStatus);
282 if(U_FAILURE(minStatus)) {
283 errln((UnicodeString)"Failure getting min date for " + origLocale.getName());
284 return;
285 }
286 //logln(UnicodeString("Min date is ") + fullFormat(minDate) + " for " + origLocale.getName());
287
288 pat = ((SimpleDateFormat*)fmt)->toPattern(pat);
289
290 // NOTE TO MAINTAINER
291 // This indexOf check into the pattern needs to be refined to ignore
292 // quoted characters. Currently, this isn't a problem with the locale
293 // patterns we have, but it may be a problem later.
294
295 UBool hasEra = (pat.indexOf(UnicodeString("G")) != -1);
296 UBool hasZoneDisplayName = (pat.indexOf(UnicodeString("z")) != -1) || (pat.indexOf(UnicodeString("v")) != -1)
297 || (pat.indexOf(UnicodeString("V")) != -1);
298
299 // Because patterns contain incomplete data representing the Date,
300 // we must be careful of how we do the roundtrip. We start with
301 // a randomly generated Date because they're easier to generate.
302 // From this we get a string. The string is our real starting point,
303 // because this string should parse the same way all the time. Note
304 // that it will not necessarily parse back to the original date because
305 // of incompleteness in patterns. For example, a time-only pattern won't
306 // parse back to the same date.
307
308 //try {
309 for(int i = 0; i < TRIALS; ++i) {
310 UDate *d = new UDate [DEPTH];
311 UnicodeString *s = new UnicodeString[DEPTH];
312
313 if(isGregorian == TRUE) {
314 d[0] = generateDate();
315 } else {
316 d[0] = generateDate(minDate);
317 }
318
319 UErrorCode status = U_ZERO_ERROR;
320
321 // We go through this loop until we achieve a match or until
322 // the maximum loop count is reached. We record the points at
323 // which the date and the string starts to match. Once matching
324 // starts, it should continue.
325 int loop;
326 int dmatch = 0; // d[dmatch].getTime() == d[dmatch-1].getTime()
327 int smatch = 0; // s[smatch].equals(s[smatch-1])
328 for(loop = 0; loop < DEPTH; ++loop) {
329 if (loop > 0) {
330 d[loop] = fmt->parse(s[loop-1], status);
331 failure(status, "fmt->parse", s[loop-1]+" in locale: " + origLocale.getName());
332 status = U_ZERO_ERROR; /* any error would have been reported */
333 }
334
335 s[loop] = fmt->format(d[loop], s[loop]);
336
337 // For displaying which date is being tested
338 //logln(s[loop] + " = " + fullFormat(d[loop]));
339
340 if(s[loop].length() == 0) {
341 errln("FAIL: fmt->format gave 0-length string in " + pat + " with number " + d[loop] + " in locale " + origLocale.getName());
342 }
343
344 if(loop > 0) {
345 if(smatch == 0) {
346 UBool match = s[loop] == s[loop-1];
347 if(smatch == 0) {
348 if(match)
349 smatch = loop;
350 }
351 else if( ! match)
352 errln("FAIL: String mismatch after match");
353 }
354
355 if(dmatch == 0) {
356 // {sfb} watch out here, this might not work
357 UBool match = d[loop]/*.getTime()*/ == d[loop-1]/*.getTime()*/;
358 if(dmatch == 0) {
359 if(match)
360 dmatch = loop;
361 }
362 else if( ! match)
363 errln("FAIL: Date mismatch after match");
364 }
365
366 if(smatch != 0 && dmatch != 0)
367 break;
368 }
369 }
370 // At this point loop == DEPTH if we've failed, otherwise loop is the
371 // max(smatch, dmatch), that is, the index at which we have string and
372 // date matching.
373
374 // Date usually matches in 2. Exceptions handled below.
375 int maxDmatch = 2;
376 int maxSmatch = 1;
377 if (dmatch > maxDmatch) {
378 // Time-only pattern with zone information and a starting date in PST.
379 if(timeOnly && hasZoneDisplayName
380 && fmt->getTimeZone().inDaylightTime(d[0], status) && ! failure(status, "TimeZone::inDST()")) {
381 maxDmatch = 3;
382 maxSmatch = 2;
383 }
384 }
385
386 // String usually matches in 1. Exceptions are checked for here.
387 if(smatch > maxSmatch) { // Don't compute unless necessary
388 UBool in0;
389 // Starts in BC, with no era in pattern
390 if( ! hasEra && getField(d[0], UCAL_ERA) == GregorianCalendar::BC)
391 maxSmatch = 2;
392 // Starts in DST, no year in pattern
393 else if((in0=fmt->getTimeZone().inDaylightTime(d[0], status)) && ! failure(status, "gettingDaylightTime") &&
394 pat.indexOf(UnicodeString("yyyy")) == -1)
395 maxSmatch = 2;
396 // If we start not in DST, but transition into DST
397 else if (!in0 &&
398 fmt->getTimeZone().inDaylightTime(d[1], status) && !failure(status, "gettingDaylightTime"))
399 maxSmatch = 2;
400 // Two digit year with no time zone change,
401 // unless timezone isn't used or we aren't close to the DST changover
402 else if (pat.indexOf(UnicodeString("y")) != -1
403 && pat.indexOf(UnicodeString("yyyy")) == -1
404 && getField(d[0], UCAL_YEAR)
405 != getField(d[dmatch], UCAL_YEAR)
406 && !failure(status, "error status [smatch>maxSmatch]")
407 && ((hasZoneDisplayName
408 && (fmt->getTimeZone().inDaylightTime(d[0], status)
409 == fmt->getTimeZone().inDaylightTime(d[dmatch], status)
410 || getField(d[0], UCAL_MONTH) == UCAL_APRIL
411 || getField(d[0], UCAL_MONTH) == UCAL_OCTOBER))
412 || !hasZoneDisplayName)
413 )
414 {
415 maxSmatch = 2;
416 }
417 // If zone display name is used, fallback format might be used before 1970
418 else if (hasZoneDisplayName && d[0] < 0) {
419 maxSmatch = 2;
420 }
421 }
422
423 if(dmatch > maxDmatch || smatch > maxSmatch) { // Special case for Japanese and Islamic (could have large negative years)
424 const char *type = fmt->getCalendar()->getType();
425 if(!strcmp(type,"japanese")) {
426 maxSmatch = 4;
427 maxDmatch = 4;
428 }
429 }
430
431 // Use @v to see verbose results on successful cases
432 UBool fail = (dmatch > maxDmatch || smatch > maxSmatch);
433 if (optionv || fail) {
434 if (fail) {
435 errln(UnicodeString("\nFAIL: Pattern: ") + pat +
436 " in Locale: " + origLocale.getName());
437 } else {
438 errln(UnicodeString("\nOk: Pattern: ") + pat +
439 " in Locale: " + origLocale.getName());
440 }
441
442 logln("Date iters until match=%d (max allowed=%d), string iters until match=%d (max allowed=%d)",
443 dmatch,maxDmatch, smatch, maxSmatch);
444
445 for(int j = 0; j <= loop && j < DEPTH; ++j) {
446 UnicodeString temp;
447 FieldPosition pos(FieldPosition::DONT_CARE);
448 errln((j>0?" P> ":" ") + fullFormat(d[j]) + " F> " +
449 escape(s[j], temp) + UnicodeString(" d=") + d[j] +
450 (j > 0 && d[j]/*.getTime()*/==d[j-1]/*.getTime()*/?" d==":"") +
451 (j > 0 && s[j] == s[j-1]?" s==":""));
452 }
453 }
454 delete[] d;
455 delete[] s;
456 }
457 /*}
458 catch (ParseException e) {
459 errln("Exception: " + e.getMessage());
460 logln(e.toString());
461 }*/
462 }
463
fullFormat(UDate d)464 const UnicodeString& DateFormatRoundTripTest::fullFormat(UDate d) {
465 UErrorCode ec = U_ZERO_ERROR;
466 if (dateFormat == 0) {
467 dateFormat = new SimpleDateFormat((UnicodeString)"EEE MMM dd HH:mm:ss.SSS zzz yyyy G", ec);
468 if (U_FAILURE(ec) || dateFormat == 0) {
469 fgStr = "[FAIL: SimpleDateFormat constructor]";
470 delete dateFormat;
471 dateFormat = 0;
472 return fgStr;
473 }
474 }
475 fgStr.truncate(0);
476 dateFormat->format(d, fgStr);
477 return fgStr;
478 }
479
480 /**
481 * Return a field of the given date
482 */
getField(UDate d,int32_t f)483 int32_t DateFormatRoundTripTest::getField(UDate d, int32_t f) {
484 // Should be synchronized, but we're single threaded so it's ok
485 UErrorCode status = U_ZERO_ERROR;
486 getFieldCal->setTime(d, status);
487 failure(status, "getfieldCal->setTime");
488 int32_t ret = getFieldCal->get((UCalendarDateFields)f, status);
489 failure(status, "getfieldCal->get");
490 return ret;
491 }
492
escape(const UnicodeString & src,UnicodeString & dst)493 UnicodeString& DateFormatRoundTripTest::escape(const UnicodeString& src, UnicodeString& dst )
494 {
495 dst.remove();
496 for (int32_t i = 0; i < src.length(); ++i) {
497 UChar c = src[i];
498 if(c < 0x0080)
499 dst += c;
500 else {
501 dst += UnicodeString("[");
502 char buf [8];
503 sprintf(buf, "%#x", c);
504 dst += UnicodeString(buf);
505 dst += UnicodeString("]");
506 }
507 }
508
509 return dst;
510 }
511
512 #define U_MILLIS_PER_YEAR (365.25 * 24 * 60 * 60 * 1000)
513
generateDate(UDate minDate)514 UDate DateFormatRoundTripTest::generateDate(UDate minDate)
515 {
516 // Bring range in conformance to generateDate() below.
517 if(minDate < (U_MILLIS_PER_YEAR * -(4000-1970))) {
518 minDate = (U_MILLIS_PER_YEAR * -(4000-1970));
519 }
520 for(int i=0;i<8;i++) {
521 double a = randFraction();
522
523 // Range from (min) to (8000-1970) AD
524 double dateRange = (0.0 - minDate) + (U_MILLIS_PER_YEAR + (8000-1970));
525
526 a *= dateRange;
527
528 // Now offset from minDate
529 a += minDate;
530
531 // Last sanity check
532 if(a>=minDate) {
533 return a;
534 }
535 }
536 return minDate;
537 }
538
generateDate()539 UDate DateFormatRoundTripTest::generateDate()
540 {
541 double a = randFraction();
542
543 // Now 'a' ranges from 0..1; scale it to range from 0 to 8000 years
544 a *= 8000;
545
546 // Range from (4000-1970) BC to (8000-1970) AD
547 a -= 4000;
548
549 // Now scale up to ms
550 a *= 365.25 * 24 * 60 * 60 * 1000;
551
552 //return new Date((long)a);
553 return a;
554 }
555
556 #endif /* #if !UCONFIG_NO_FORMATTING */
557
558 //eof
559