/********************************************************************
 * COPYRIGHT: 
 * Copyright (c) 1997-2005, International Business Machines Corporation and
 * others. All Rights Reserved.
 ********************************************************************/
 
#include "unicode/utypes.h"

#if !UCONFIG_NO_FORMATTING

#include "dtfmttst.h"
#include "unicode/timezone.h"
#include "unicode/gregocal.h"
#include "unicode/smpdtfmt.h"
#include "unicode/datefmt.h"
#include "unicode/simpletz.h"
#include "unicode/strenum.h"
#include "unicode/dtfmtsym.h"
#include "cmemory.h"
#include "cstring.h"
#include "caltest.h"  // for fieldName

// *****************************************************************************
// class DateFormatTest
// *****************************************************************************

void DateFormatTest::runIndexedTest( int32_t index, UBool exec, const char* &name, char* /*par*/ )
{
    // if (exec) logln((UnicodeString)"TestSuite DateFormatTest");
    switch (index) {
        TESTCASE(0,TestEquals);
        TESTCASE(1,TestTwoDigitYearDSTParse);
        TESTCASE(2,TestFieldPosition);
        TESTCASE(3,TestPartialParse994);
        TESTCASE(4,TestRunTogetherPattern985);
        TESTCASE(5,TestRunTogetherPattern917);
        TESTCASE(6,TestCzechMonths459);
        TESTCASE(7,TestLetterDPattern212);
        TESTCASE(8,TestDayOfYearPattern195);
        TESTCASE(9,TestQuotePattern161);
        TESTCASE(10,TestBadInput135);
        TESTCASE(11,TestBadInput135a);
        TESTCASE(12,TestTwoDigitYear);
        TESTCASE(13,TestDateFormatZone061);
        TESTCASE(14,TestDateFormatZone146);
        TESTCASE(15,TestLocaleDateFormat);
        TESTCASE(16,TestWallyWedel);
        TESTCASE(17,TestDateFormatCalendar);
        TESTCASE(18,TestSpaceParsing);
        TESTCASE(19,TestExactCountFormat);
        TESTCASE(20,TestWhiteSpaceParsing);
        TESTCASE(21,TestInvalidPattern);
        TESTCASE(22,TestGeneral);
        TESTCASE(23,TestGreekMay);
        TESTCASE(24,TestGenericTime);
        TESTCASE(25,TestGenericTimeZoneOrder);
        default: name = ""; break;
    }
}

// Test written by Wally Wedel and emailed to me.
void DateFormatTest::TestWallyWedel()
{
    UErrorCode status = U_ZERO_ERROR;
    /*
     * Instantiate a TimeZone so we can get the ids.
     */
    TimeZone *tz = new SimpleTimeZone(7,"");
    /*
     * Computational variables.
     */
    int32_t offset, hours, minutes;
    /*
     * Instantiate a SimpleDateFormat set up to produce a full time
     zone name.
     */
    SimpleDateFormat *sdf = new SimpleDateFormat((UnicodeString)"zzzz", status);
    /*
     * A String array for the time zone ids.
     */
    int32_t ids_length;
    StringEnumeration* ids = TimeZone::createEnumeration();
    ids_length = ids->count(status);
    /*
     * How many ids do we have?
     */
    logln("Time Zone IDs size: %d", ids_length);
    /*
     * Column headings (sort of)
     */
    logln("Ordinal ID offset(h:m) name");
    /*
     * Loop through the tzs.
     */
    UDate today = Calendar::getNow();
    Calendar *cal = Calendar::createInstance(status);
    for (int32_t i = 0; i < ids_length; i++) {
        // logln(i + " " + ids[i]);
        const UnicodeString* id = ids->snext(status);
        TimeZone *ttz = TimeZone::createTimeZone(*id);
        // offset = ttz.getRawOffset();
        cal->setTimeZone(*ttz);
        cal->setTime(today, status);
        offset = cal->get(UCAL_ZONE_OFFSET, status) + cal->get(UCAL_DST_OFFSET, status);
        // logln(i + " " + ids[i] + " offset " + offset);
        const char* sign = "+";
        if (offset < 0) {
            sign = "-";
            offset = -offset;
        }
        hours = offset/3600000;
        minutes = (offset%3600000)/60000;
        UnicodeString dstOffset = (UnicodeString)"" + sign + (hours < 10 ? "0" : "") +
            (int32_t)hours + ":" + (minutes < 10 ? "0" : "") + (int32_t)minutes;
        /*
         * Instantiate a date so we can display the time zone name.
         */
        sdf->setTimeZone(*ttz);
        /*
         * Format the output.
         */
        UnicodeString fmtOffset;
        FieldPosition pos(0);
        sdf->format(today,fmtOffset, pos);
        // UnicodeString fmtOffset = tzS.toString();
        UnicodeString *fmtDstOffset = 0;
        if (fmtOffset.startsWith("GMT"))
        {
            //fmtDstOffset = fmtOffset->substring(3);
            fmtDstOffset = new UnicodeString();
            fmtOffset.extract(3, fmtOffset.length(), *fmtDstOffset);
        }
        /*
         * Show our result.
         */
        UBool ok = fmtDstOffset == 0 || *fmtDstOffset == dstOffset;
        if (ok)
        {
            logln(UnicodeString() + i + " " + *id + " " + dstOffset +
                  " " + fmtOffset +
                  (fmtDstOffset != 0 ? " ok" : " ?"));
        }
        else
        {
            errln(UnicodeString() + i + " " + *id + " " + dstOffset +
                  " " + fmtOffset + " *** FAIL ***");
        }
        delete ttz;
        delete fmtDstOffset;
    }
    delete cal;
    //  delete ids;   // TODO:  BAD API
    delete ids;
    delete sdf;
    delete tz;
}

// -------------------------------------
 
/**
 * Test operator==
 */
void
DateFormatTest::TestEquals()
{
    DateFormat* fmtA = DateFormat::createDateTimeInstance(DateFormat::MEDIUM, DateFormat::FULL);
    DateFormat* fmtB = DateFormat::createDateTimeInstance(DateFormat::MEDIUM, DateFormat::FULL);
    if (!(*fmtA == *fmtB)) errln((UnicodeString)"FAIL");
    delete fmtA;
    delete fmtB;
}
 
// -------------------------------------

/**
 * Test the parsing of 2-digit years.
 */
void
DateFormatTest::TestTwoDigitYearDSTParse(void)
{
    UErrorCode status = U_ZERO_ERROR;
    SimpleDateFormat* fullFmt = new SimpleDateFormat((UnicodeString)"EEE MMM dd HH:mm:ss.SSS zzz yyyy G", status);
    SimpleDateFormat *fmt = new SimpleDateFormat((UnicodeString)"dd-MMM-yy h:mm:ss 'o''clock' a z", Locale::getEnglish(), status);
    //DateFormat* fmt = DateFormat::createDateTimeInstance(DateFormat::MEDIUM, DateFormat::FULL, Locale::ENGLISH);
    UnicodeString* s = new UnicodeString("03-Apr-04 2:20:47 o'clock AM PST", "");
    int32_t hour = 2;

    UnicodeString str;
    UDate d = fmt->parse(*s, status);
    logln(*s + " P> " + ((DateFormat*)fullFmt)->format(d, str));
    int32_t y, m, day, hr, min, sec;
    dateToFields(d, y, m, day, hr, min, sec);
    if (hr != hour)
        errln((UnicodeString)"FAIL: Should parse to hour " + hour + " but got " + hr);

    if (U_FAILURE(status))
        errln((UnicodeString)"FAIL: " + (int32_t)status);

    delete s;
    delete fmt;
    delete fullFmt;
}
 
// -------------------------------------
 
UChar toHexString(int32_t i) { return (UChar)(i + (i < 10 ? 0x30 : (0x41 - 10))); }

UnicodeString&
DateFormatTest::escape(UnicodeString& s)
{
    UnicodeString buf;
    for (int32_t i=0; i<s.length(); ++i)
    {
        UChar c = s[(int32_t)i];
        if (c <= (UChar)0x7F) buf += c;
        else {
            buf += (UChar)0x5c; buf += (UChar)0x55;
            buf += toHexString((c & 0xF000) >> 12);
            buf += toHexString((c & 0x0F00) >> 8);
            buf += toHexString((c & 0x00F0) >> 4);
            buf += toHexString(c & 0x000F);
        }
    }
    return (s = buf);
}
 
// -------------------------------------

/**
 * This MUST be kept in sync with DateFormatSymbols.gPatternChars.
 */
static const char* PATTERN_CHARS = "GyMdkHmsSEDFwWahKzYeugAZvcL";

/**
 * A list of the names of all the fields in DateFormat.
 * This MUST be kept in sync with DateFormat.
 */
static const char* DATEFORMAT_FIELD_NAMES[] = {
    "ERA_FIELD",
    "YEAR_FIELD",
    "MONTH_FIELD",
    "DATE_FIELD",
    "HOUR_OF_DAY1_FIELD",
    "HOUR_OF_DAY0_FIELD",
    "MINUTE_FIELD",
    "SECOND_FIELD",
    "MILLISECOND_FIELD",
    "DAY_OF_WEEK_FIELD",
    "DAY_OF_YEAR_FIELD",
    "DAY_OF_WEEK_IN_MONTH_FIELD",
    "WEEK_OF_YEAR_FIELD",
    "WEEK_OF_MONTH_FIELD",
    "AM_PM_FIELD",
    "HOUR1_FIELD",
    "HOUR0_FIELD",
    "TIMEZONE_FIELD",
    "YEAR_WOY_FIELD",
    "DOW_LOCAL_FIELD",
    "EXTENDED_YEAR_FIELD",
    "JULIAN_DAY_FIELD",
    "MILLISECONDS_IN_DAY_FIELD",
    "TIMEZONE_RFC_FIELD",
    "GENERIC_TIMEZONE_FIELD",
    "STAND_ALONE_DAY_FIELD",
    "STAND_ALONE_MONTH_FIELD"
};

static const int32_t DATEFORMAT_FIELD_NAMES_LENGTH =
    sizeof(DATEFORMAT_FIELD_NAMES) / sizeof(DATEFORMAT_FIELD_NAMES[0]);

/**
 * Verify that returned field position indices are correct.
 */
void DateFormatTest::TestFieldPosition() {
    UErrorCode ec = U_ZERO_ERROR;
    int32_t i, j, exp;
    UnicodeString buf;

    // Verify data
    DateFormatSymbols rootSyms(Locale(""), ec);
    assertSuccess("DateFormatSymbols", ec);
    assertEquals("patternChars", PATTERN_CHARS, rootSyms.getLocalPatternChars(buf));
    assertEquals("patternChars", PATTERN_CHARS, DateFormatSymbols::getPatternUChars());
    assertTrue("DATEFORMAT_FIELD_NAMES", DATEFORMAT_FIELD_NAMES_LENGTH == UDAT_FIELD_COUNT);
    assertTrue("Data", UDAT_FIELD_COUNT == uprv_strlen(PATTERN_CHARS));

    // Create test formatters
    const int32_t COUNT = 4;
    DateFormat* dateFormats[COUNT];
    dateFormats[0] = DateFormat::createDateTimeInstance(DateFormat::kFull, DateFormat::kFull, Locale::getUS());
    dateFormats[1] = DateFormat::createDateTimeInstance(DateFormat::kFull, DateFormat::kFull, Locale::getFrance());
    // Make the pattern "G y M d..."
    buf.remove().append(PATTERN_CHARS);
    for (j=buf.length()-1; j>=0; --j) buf.insert(j, (UChar)32/*' '*/);
    dateFormats[2] = new SimpleDateFormat(buf, Locale::getUS(), ec);
    // Make the pattern "GGGG yyyy MMMM dddd..."
    for (j=buf.length()-1; j>=0; j-=2) {
        for (i=0; i<3; ++i) {
            buf.insert(j, buf.charAt(j));
        }
    }
    dateFormats[3] = new SimpleDateFormat(buf, Locale::getUS(), ec);
    if(U_FAILURE(ec)){
        errln(UnicodeString("Could not create SimpleDateFormat object for locale en_US. Error: " )+ UnicodeString(u_errorName(ec)));
        return;
    }
    UDate aug13 = 871508052513.0;

    // Expected output field values for above DateFormats on aug13
    // Fields are given in order of DateFormat field number
    const char* EXPECTED[] = {
        "", "1997", "August", "13", "", "", "34", "12", "",
        "Wednesday", "", "", "", "", "PM", "2", "", "PDT", "", "", "", "", "", "", "", "","",

        "", "1997", "ao\\u00FBt", "13", "", "14", "34", "", "",
        "mercredi", "", "", "", "", "", "", "", "HAP (\\u00C9UA)", "", "", "", "", "", "", "",  "","",

        "AD", "1997", "8", "13", "14", "14", "34", "12", "5",
        "Wed", "225", "2", "33", "3", "PM", "2", "2", "PDT", "1997", "4", "1997", "2450674", "52452513", "-0700", "PT",  "4","7",

        "AD", "1997", "August", "0013", "0014", "0014", "0034", "0012", "5130",
        "Wednesday", "0225", "0002", "0033", "0003", "PM", "0002", "0002", "Pacific Daylight Time", "1997", "0004", "1997", "2450674", "52452513", "-0700", "Pacific Time",  "0004", "0007"
    };

    const int32_t EXPECTED_LENGTH = sizeof(EXPECTED)/sizeof(EXPECTED[0]);

    assertTrue("data size", EXPECTED_LENGTH == COUNT * UDAT_FIELD_COUNT);

    TimeZone* PT = TimeZone::createTimeZone("America/Los_Angeles");
    for (j = 0, exp = 0; j < COUNT; ++j) {
        //  String str;
        DateFormat* df = dateFormats[j];
        df->setTimeZone(*PT);
        if (df->getDynamicClassID() == SimpleDateFormat::getStaticClassID()) {
            logln(" Pattern = " + ((SimpleDateFormat*) df)->toPattern(buf.remove()));
        } else {
            logln(" Pattern = ? (not a SimpleDateFormat)");
        }
        logln((UnicodeString)"  Result = " + df->format(aug13, buf.remove()));

        for (i = 0; i < UDAT_FIELD_COUNT; ++i, ++exp) {
            FieldPosition pos(i);
            df->format(aug13, buf.remove(), pos);    
            UnicodeString field;
            buf.extractBetween(pos.getBeginIndex(), pos.getEndIndex(), field);
            assertEquals((UnicodeString)"field #" + i + " " + DATEFORMAT_FIELD_NAMES[i],
                         ctou(EXPECTED[exp]), field);
        }
    }

    for (i=0; i<COUNT; ++i) {
        delete dateFormats[i];
    }
    delete PT;
}

// -------------------------------------

/**
 * General parse/format tests.  Add test cases as needed.
 */
void DateFormatTest::TestGeneral() {
    const char* DATA[] = {
        "yyyy MM dd HH:mm:ss.SSS",

        // Milliseconds are left-justified, since they format as fractions of a second
        "y/M/d H:mm:ss.S", "fp", "2004 03 10 16:36:31.567", "2004/3/10 16:36:31.6", "2004 03 10 16:36:31.600",
        "y/M/d H:mm:ss.SS", "fp", "2004 03 10 16:36:31.567", "2004/3/10 16:36:31.57", "2004 03 10 16:36:31.570",
        "y/M/d H:mm:ss.SSS", "F", "2004 03 10 16:36:31.567", "2004/3/10 16:36:31.567",
        "y/M/d H:mm:ss.SSSS", "pf", "2004/3/10 16:36:31.5679", "2004 03 10 16:36:31.568", "2004/3/10 16:36:31.5680",
    };
    expect(DATA, sizeof(DATA)/sizeof(DATA[0]), Locale("en", "", ""));
}
 
// -------------------------------------

/**
 * Verify that strings which contain incomplete specifications are parsed
 * correctly.  In some instances, this means not being parsed at all, and
 * returning an appropriate error.
 */
void
DateFormatTest::TestPartialParse994()
{
    UErrorCode status = U_ZERO_ERROR;
    SimpleDateFormat* f = new SimpleDateFormat(status);
    UDate null = 0;
    tryPat994(f, "yy/MM/dd HH:mm:ss", "97/01/17 10:11:42", date(97, 1 - 1, 17, 10, 11, 42));
    tryPat994(f, "yy/MM/dd HH:mm:ss", "97/01/17 10:", null);
    tryPat994(f, "yy/MM/dd HH:mm:ss", "97/01/17 10", null);
    tryPat994(f, "yy/MM/dd HH:mm:ss", "97/01/17 ", null);
    tryPat994(f, "yy/MM/dd HH:mm:ss", "97/01/17", null);
    if (U_FAILURE(status)) errln((UnicodeString)"FAIL: UErrorCode received during test: " + (int32_t)status);
    delete f;
}
 
// -------------------------------------
 
void
DateFormatTest::tryPat994(SimpleDateFormat* format, const char* pat, const char* str, UDate expected)
{
    UErrorCode status = U_ZERO_ERROR;
    UDate null = 0;
    logln(UnicodeString("Pattern \"") + pat + "\"   String \"" + str + "\"");
    //try {
        format->applyPattern(pat);
        UDate date = format->parse(str, status);
        if (U_FAILURE(status) || date == null)
        {
            logln((UnicodeString)"ParseException: " + (int32_t)status);
            if (expected != null) errln((UnicodeString)"FAIL: Expected " + dateToString(expected));
        }
        else
        {
            UnicodeString f;
            ((DateFormat*)format)->format(date, f);
            logln(UnicodeString(" parse(") + str + ") -> " + dateToString(date));
            logln((UnicodeString)" format -> " + f);
            if (expected == null ||
                !(date == expected)) errln((UnicodeString)"FAIL: Expected null");//" + expected);
            if (!(f == str)) errln(UnicodeString("FAIL: Expected ") + str);
        }
    //}
    //catch(ParseException e) {
    //    logln((UnicodeString)"ParseException: " + e.getMessage());
    //    if (expected != null) errln((UnicodeString)"FAIL: Expected " + dateToString(expected));
    //}
    //catch(Exception e) {
    //    errln((UnicodeString)"*** Exception:");
    //    e.printStackTrace();
    //}
}
 
// -------------------------------------
 
/**
 * Verify the behavior of patterns in which digits for different fields run together
 * without intervening separators.
 */
void
DateFormatTest::TestRunTogetherPattern985()
{
    UErrorCode status = U_ZERO_ERROR;
    UnicodeString format("yyyyMMddHHmmssSSS");
    UnicodeString now, then;
    //UBool flag;
    SimpleDateFormat *formatter = new SimpleDateFormat(format, status);
    UDate date1 = Calendar::getNow();
    ((DateFormat*)formatter)->format(date1, now);
    logln(now);
    ParsePosition pos(0);
    UDate date2 = formatter->parse(now, pos);
    if (date2 == 0) then = "Parse stopped at " + pos.getIndex();
    else ((DateFormat*)formatter)->format(date2, then);
    logln(then);
    if (!(date2 == date1)) errln((UnicodeString)"FAIL");
    delete formatter;
    if (U_FAILURE(status)) errln((UnicodeString)"FAIL: UErrorCode received during test: " + (int32_t)status);
}
 
// -------------------------------------
 
/**
 * Verify the behavior of patterns in which digits for different fields run together
 * without intervening separators.
 */
void
DateFormatTest::TestRunTogetherPattern917()
{
    UErrorCode status = U_ZERO_ERROR;
    SimpleDateFormat* fmt;
    UnicodeString myDate;
    fmt = new SimpleDateFormat((UnicodeString)"yyyy/MM/dd", status);
    myDate = "1997/02/03";
    testIt917(fmt, myDate, date(97, 2 - 1, 3));
    delete fmt;
    fmt = new SimpleDateFormat((UnicodeString)"yyyyMMdd", status);
    myDate = "19970304";
    testIt917(fmt, myDate, date(97, 3 - 1, 4));
    delete fmt;
    if (U_FAILURE(status)) errln((UnicodeString)"FAIL: UErrorCode received during test: " + (int32_t)status);
}
 
// -------------------------------------
 
void
DateFormatTest::testIt917(SimpleDateFormat* fmt, UnicodeString& str, UDate expected)
{
    UErrorCode status = U_ZERO_ERROR;
    UnicodeString pattern;
    logln((UnicodeString)"pattern=" + fmt->toPattern(pattern) + "   string=" + str);
    Formattable o;
    //try {
        ((Format*)fmt)->parseObject(str, o, status);
    //}
    if (U_FAILURE(status)) return;
    //catch(ParseException e) {
    //    e.printStackTrace();
    //    return;
    //}
    logln((UnicodeString)"Parsed object: " + dateToString(o.getDate()));
    if (!(o.getDate() == expected)) errln((UnicodeString)"FAIL: Expected " + dateToString(expected));
    UnicodeString formatted; ((Format*)fmt)->format(o, formatted, status);
    logln((UnicodeString)"Formatted string: " + formatted);
    if (!(formatted == str)) errln((UnicodeString)"FAIL: Expected " + str);
    if (U_FAILURE(status)) errln((UnicodeString)"FAIL: UErrorCode received during test: " + (int32_t)status);
}
 
// -------------------------------------
 
/**
 * Verify the handling of Czech June and July, which have the unique attribute that
 * one is a proper prefix substring of the other.
 */
void
DateFormatTest::TestCzechMonths459()
{
    UErrorCode status = U_ZERO_ERROR;
    DateFormat* fmt = DateFormat::createDateInstance(DateFormat::FULL, Locale("cs", "", ""));
    UnicodeString pattern;
    logln((UnicodeString)"Pattern " + ((SimpleDateFormat*) fmt)->toPattern(pattern));
    UDate june = date(97, UCAL_JUNE, 15);
    UDate july = date(97, UCAL_JULY, 15);
    UnicodeString juneStr; fmt->format(june, juneStr);
    UnicodeString julyStr; fmt->format(july, julyStr);
    //try {
        logln((UnicodeString)"format(June 15 1997) = " + juneStr);
        UDate d = fmt->parse(juneStr, status);
        UnicodeString s; fmt->format(d, s);
        int32_t month,yr,day,hr,min,sec; dateToFields(d,yr,month,day,hr,min,sec);
        logln((UnicodeString)"  -> parse -> " + s + " (month = " + month + ")");
        if (month != UCAL_JUNE) errln((UnicodeString)"FAIL: Month should be June");
        logln((UnicodeString)"format(July 15 1997) = " + julyStr);
        d = fmt->parse(julyStr, status);
        fmt->format(d, s);
        dateToFields(d,yr,month,day,hr,min,sec);
        logln((UnicodeString)"  -> parse -> " + s + " (month = " + month + ")");
        if (month != UCAL_JULY) errln((UnicodeString)"FAIL: Month should be July");
    //}
    //catch(ParseException e) {
    if (U_FAILURE(status))
        errln((UnicodeString)"Exception: " + (int32_t)status);
    //}
    delete fmt;
}
 
// -------------------------------------

/**
 * Test the handling of 'D' in patterns.
 */
void
DateFormatTest::TestLetterDPattern212()
{
    UErrorCode status = U_ZERO_ERROR;
    UnicodeString dateString("1995-040.05:01:29");
    UnicodeString bigD("yyyy-DDD.hh:mm:ss");
    UnicodeString littleD("yyyy-ddd.hh:mm:ss");
    UDate expLittleD = date(95, 0, 1, 5, 1, 29);
    UDate expBigD = expLittleD + 39 * 24 * 3600000.0;
    expLittleD = expBigD; // Expect the same, with default lenient parsing
    logln((UnicodeString)"dateString= " + dateString);
    SimpleDateFormat *formatter = new SimpleDateFormat(bigD, status);
    ParsePosition pos(0);
    UDate myDate = formatter->parse(dateString, pos);
    logln((UnicodeString)"Using " + bigD + " -> " + myDate);
    if (myDate != expBigD) errln((UnicodeString)"FAIL: Expected " + dateToString(expBigD));
    delete formatter;
    formatter = new SimpleDateFormat(littleD, status);
    pos = ParsePosition(0);
    myDate = formatter->parse(dateString, pos);
    logln((UnicodeString)"Using " + littleD + " -> " + dateToString(myDate));
    if (myDate != expLittleD) errln((UnicodeString)"FAIL: Expected " + dateToString(expLittleD));
    delete formatter;
    if (U_FAILURE(status)) errln((UnicodeString)"FAIL: UErrorCode received during test: " + (int32_t)status);
}
 
// -------------------------------------

/**
 * Test the day of year pattern.
 */
void
DateFormatTest::TestDayOfYearPattern195()
{
    UErrorCode status = U_ZERO_ERROR;
    UDate today = Calendar::getNow();
    int32_t year,month,day,hour,min,sec; dateToFields(today,year,month,day,hour,min,sec);
    UDate expected = date(year, month, day);
    logln((UnicodeString)"Test Date: " + dateToString(today));
    SimpleDateFormat* sdf = (SimpleDateFormat*)DateFormat::createDateInstance();
    tryPattern(*sdf, today, 0, expected);
    tryPattern(*sdf, today, "G yyyy DDD", expected);
    delete sdf;
    if (U_FAILURE(status)) errln((UnicodeString)"FAIL: UErrorCode received during test: " + (int32_t)status);
}
 
// -------------------------------------
 
void
DateFormatTest::tryPattern(SimpleDateFormat& sdf, UDate d, const char* pattern, UDate expected)
{
    UErrorCode status = U_ZERO_ERROR;
    if (pattern != 0) sdf.applyPattern(pattern);
    UnicodeString thePat;
    logln((UnicodeString)"pattern: " + sdf.toPattern(thePat));
    UnicodeString formatResult; (*(DateFormat*)&sdf).format(d, formatResult);
    logln((UnicodeString)" format -> " + formatResult);
    // try {
        UDate d2 = sdf.parse(formatResult, status);
        logln((UnicodeString)" parse(" + formatResult + ") -> " + dateToString(d2));
        if (d2 != expected) errln((UnicodeString)"FAIL: Expected " + dateToString(expected));
        UnicodeString format2; (*(DateFormat*)&sdf).format(d2, format2);
        logln((UnicodeString)" format -> " + format2);
        if (!(formatResult == format2)) errln((UnicodeString)"FAIL: Round trip drift");
    //}
    //catch(Exception e) {
    if (U_FAILURE(status))
        errln((UnicodeString)"Error: " + (int32_t)status);
    //}
}
 
// -------------------------------------

/**
 * Test the handling of single quotes in patterns.
 */
void
DateFormatTest::TestQuotePattern161()
{
    UErrorCode status = U_ZERO_ERROR;
    SimpleDateFormat* formatter = new SimpleDateFormat((UnicodeString)"MM/dd/yyyy 'at' hh:mm:ss a zzz", status);
    UDate currentTime_1 = date(97, UCAL_AUGUST, 13, 10, 42, 28);
    UnicodeString dateString; ((DateFormat*)formatter)->format(currentTime_1, dateString);
    UnicodeString exp("08/13/1997 at 10:42:28 AM ");
    logln((UnicodeString)"format(" + dateToString(currentTime_1) + ") = " + dateString);
    if (0 != dateString.compareBetween(0, exp.length(), exp, 0, exp.length())) errln((UnicodeString)"FAIL: Expected " + exp);
    delete formatter;
    if (U_FAILURE(status)) errln((UnicodeString)"FAIL: UErrorCode received during test: " + (int32_t)status);
}
 
// -------------------------------------

/**
 * Verify the correct behavior when handling invalid input strings.
 */
void
DateFormatTest::TestBadInput135()
{
    UErrorCode status = U_ZERO_ERROR;
    DateFormat::EStyle looks[] = {
        DateFormat::SHORT, DateFormat::MEDIUM, DateFormat::LONG, DateFormat::FULL
    };
    int32_t looks_length = (int32_t)(sizeof(looks) / sizeof(looks[0]));
    const char* strings[] = {
        "Mar 15", "Mar 15 1997", "asdf", "3/1/97 1:23:", "3/1/00 1:23:45 AM"
    };
    int32_t strings_length = (int32_t)(sizeof(strings) / sizeof(strings[0]));
    DateFormat *full = DateFormat::createDateTimeInstance(DateFormat::LONG, DateFormat::LONG);
    UnicodeString expected("March 1, 2000 1:23:45 AM ");
    for (int32_t i = 0; i < strings_length;++i) {
        const char* text = strings[i];
        for (int32_t j = 0; j < looks_length;++j) {
            DateFormat::EStyle dateLook = looks[j];
            for (int32_t k = 0; k < looks_length;++k) {
                DateFormat::EStyle timeLook = looks[k];
                DateFormat *df = DateFormat::createDateTimeInstance(dateLook, timeLook);
                UnicodeString prefix = UnicodeString(text) + ", " + dateLook + "/" + timeLook + ": ";
                //try {
                    UDate when = df->parse(text, status);
                    if (when == 0 && U_SUCCESS(status)) {
                        errln(prefix + "SHOULD NOT HAPPEN: parse returned 0.");
                        continue;
                    }
                    if (U_SUCCESS(status))
                    {
                        UnicodeString format;
                        full->format(when, format);
                        logln(prefix + "OK: " + format);
                        if (0!=format.compareBetween(0, expected.length(), expected, 0, expected.length()))
                            errln((UnicodeString)"FAIL: Expected " + expected + " got " + format);
                    }
                //}
                //catch(ParseException e) {
                    else
                        status = U_ZERO_ERROR;
                //}
                //catch(StringIndexOutOfBoundsException e) {
                //    errln(prefix + "SHOULD NOT HAPPEN: " + (int)status);
                //}
                delete df;
            }
        }
    }
    delete full;
    if (U_FAILURE(status))
        errln((UnicodeString)"FAIL: UErrorCode received during test: " + (int32_t)status);
}
 
const char* DateFormatTest::parseFormats[] = {
    "MMMM d, yyyy",
    "MMMM d yyyy",
    "M/d/yy",
    "d MMMM, yyyy",
    "d MMMM yyyy",
    "d MMMM",
    "MMMM d",
    "yyyy",
    "h:mm a MMMM d, yyyy"
};
 
const char* DateFormatTest::inputStrings[] = {
    "bogus string", 0, 0, 0, 0, 0, 0, 0, 0, 0,
    "April 1, 1997", "April 1, 1997", 0, 0, 0, 0, 0, "April 1", 0, 0,
    "Jan 1, 1970", "January 1, 1970", 0, 0, 0, 0, 0, "January 1", 0, 0,
    "Jan 1 2037", 0, "January 1 2037", 0, 0, 0, 0, "January 1", 0, 0,
    "1/1/70", 0, 0, "1/1/70", 0, 0, 0, 0, "0001", 0,
    "5 May 1997", 0, 0, 0, 0, "5 May 1997", "5 May", 0, "0005", 0,
    "16 May", 0, 0, 0, 0, 0, "16 May", 0, "0016", 0,
    "April 30", 0, 0, 0, 0, 0, 0, "April 30", 0, 0,
    "1998", 0, 0, 0, 0, 0, 0, 0, "1998", 0,
    "1", 0, 0, 0, 0, 0, 0, 0, "0001", 0,
    "3:00 pm Jan 1, 1997", 0, 0, 0, 0, 0, 0, 0, "0003", "3:00 PM January 1, 1997",
};
 
// -------------------------------------

/**
 * Verify the correct behavior when parsing an array of inputs against an
 * array of patterns, with known results.  The results are encoded after
 * the input strings in each row.
 */
void
DateFormatTest::TestBadInput135a()
{
  UErrorCode status = U_ZERO_ERROR;
  SimpleDateFormat* dateParse = new SimpleDateFormat(status);
  if(U_FAILURE(status)) {
    errln("Failed creating SimpleDateFormat with %s. Quitting test", u_errorName(status));
    delete dateParse;
    return;
  }
  const char* s;
  UDate date;
  const uint32_t PF_LENGTH = (int32_t)(sizeof(parseFormats)/sizeof(parseFormats[0]));
  const uint32_t INPUT_LENGTH = (int32_t)(sizeof(inputStrings)/sizeof(inputStrings[0]));

  dateParse->applyPattern("d MMMM, yyyy");
  dateParse->adoptTimeZone(TimeZone::createDefault());
  s = "not parseable";
  UnicodeString thePat;
  logln(UnicodeString("Trying to parse \"") + s + "\" with " + dateParse->toPattern(thePat));
  //try {
  date = dateParse->parse(s, status);
  if (U_SUCCESS(status))
    errln((UnicodeString)"FAIL: Expected exception during parse");
  //}
  //catch(Exception ex) {
  else
    logln((UnicodeString)"Exception during parse: " + (int32_t)status);
  status = U_ZERO_ERROR;
  //}
  for (uint32_t i = 0; i < INPUT_LENGTH; i += (PF_LENGTH + 1)) {
    ParsePosition parsePosition(0);
    UnicodeString s( inputStrings[i]);
    for (uint32_t index = 0; index < PF_LENGTH;++index) {
      const char* expected = inputStrings[i + 1 + index];
      dateParse->applyPattern(parseFormats[index]);
      dateParse->adoptTimeZone(TimeZone::createDefault());
      //try {
      parsePosition.setIndex(0);
      date = dateParse->parse(s, parsePosition);
      if (parsePosition.getIndex() != 0) {
        UnicodeString s1, s2;
        s.extract(0, parsePosition.getIndex(), s1);
        s.extract(parsePosition.getIndex(), s.length(), s2);
        if (date == 0) {
          errln((UnicodeString)"ERROR: null result fmt=\"" +
                     parseFormats[index] +
                     "\" pos=" + parsePosition.getIndex() + " " +
                     s1 + "|" + s2);
        }
        else {
          UnicodeString result;
          ((DateFormat*)dateParse)->format(date, result);
          logln((UnicodeString)"Parsed \"" + s + "\" using \"" + dateParse->toPattern(thePat) + "\" to: " + result);
          if (expected == 0)
            errln((UnicodeString)"FAIL: Expected parse failure");
          else if (!(result == expected))
            errln(UnicodeString("FAIL: Expected ") + expected);
        }
      }
      else if (expected != 0) {
        errln(UnicodeString("FAIL: Expected ") + expected + " from \"" +
                     s + "\" with \"" + dateParse->toPattern(thePat) + "\"");
      }
      //}
      //catch(Exception ex) {
      if (U_FAILURE(status))
        errln((UnicodeString)"An exception was thrown during parse: " + (int32_t)status);
      //}
    }
  }
  delete dateParse;
  if (U_FAILURE(status))
    errln((UnicodeString)"FAIL: UErrorCode received during test: " + (int32_t)status);
}
 
// -------------------------------------

/**
 * Test the parsing of two-digit years.
 */
void
DateFormatTest::TestTwoDigitYear()
{
    UErrorCode ec = U_ZERO_ERROR;
    SimpleDateFormat fmt("dd/MM/yy", Locale::getUK(), ec);
    if (U_FAILURE(ec)) {
        errln("FAIL: SimpleDateFormat constructor");
        return;
    }
    parse2DigitYear(fmt, "5/6/17", date(117, UCAL_JUNE, 5));
    parse2DigitYear(fmt, "4/6/34", date(34, UCAL_JUNE, 4));
}
 
// -------------------------------------
 
void
DateFormatTest::parse2DigitYear(DateFormat& fmt, const char* str, UDate expected)
{
    UErrorCode status = U_ZERO_ERROR;
    //try {
        UDate d = fmt.parse(str, status);
        UnicodeString thePat;
        logln(UnicodeString("Parsing \"") + str + "\" with " + ((SimpleDateFormat*)&fmt)->toPattern(thePat) +
            "  => " + dateToString(d));
        if (d != expected) errln((UnicodeString)"FAIL: Expected " + expected);
    //}
    //catch(ParseException e) {
        if (U_FAILURE(status))
        errln((UnicodeString)"FAIL: Got exception");
    //}
}
 
// -------------------------------------

/**
 * Test the formatting of time zones.
 */
void
DateFormatTest::TestDateFormatZone061()
{
    UErrorCode status = U_ZERO_ERROR;
    UDate date;
    DateFormat *formatter;
    date= 859248000000.0;
    logln((UnicodeString)"Date 1997/3/25 00:00 GMT: " + date);
    formatter = new SimpleDateFormat((UnicodeString)"dd-MMM-yyyyy HH:mm", Locale::getUK(), status);
    if(U_FAILURE(status)) {
      errln("Failed creating SimpleDateFormat with %s. Quitting test", u_errorName(status));
      delete formatter;
      return;
    }
    formatter->adoptTimeZone(TimeZone::createTimeZone("GMT"));
    UnicodeString temp; formatter->format(date, temp);
    logln((UnicodeString)"Formatted in GMT to: " + temp);
    //try {
        UDate tempDate = formatter->parse(temp, status);
        logln((UnicodeString)"Parsed to: " + dateToString(tempDate));
        if (tempDate != date) errln((UnicodeString)"FAIL: Expected " + dateToString(date));
    //}
    //catch(Throwable t) {
    if (U_FAILURE(status))
        errln((UnicodeString)"Date Formatter throws: " + (int32_t)status);
    //}
    delete formatter;
}
 
// -------------------------------------
 
/**
 * Test the formatting of time zones.
 */
void
DateFormatTest::TestDateFormatZone146()
{
    TimeZone *saveDefault = TimeZone::createDefault();

        //try {
    TimeZone *thedefault = TimeZone::createTimeZone("GMT");
    TimeZone::setDefault(*thedefault);
            // java.util.Locale.setDefault(new java.util.Locale("ar", "", ""));

            // check to be sure... its GMT all right
        TimeZone *testdefault = TimeZone::createDefault();
        UnicodeString testtimezone;
        testdefault->getID(testtimezone);
        if (testtimezone == "GMT")
            logln("Test timezone = " + testtimezone);
        else
            errln("Test timezone should be GMT, not " + testtimezone);

        UErrorCode status = U_ZERO_ERROR;
        // now try to use the default GMT time zone
        GregorianCalendar *greenwichcalendar =
            new GregorianCalendar(1997, 3, 4, 23, 0, status);
        failure(status, "new GregorianCalendar");
        //*****************************greenwichcalendar.setTimeZone(TimeZone.getDefault());
        //greenwichcalendar.set(1997, 3, 4, 23, 0);
        // try anything to set hour to 23:00 !!!
        greenwichcalendar->set(UCAL_HOUR_OF_DAY, 23);
        // get time
        UDate greenwichdate = greenwichcalendar->getTime(status);
        // format every way
        UnicodeString DATA [] = {
            UnicodeString("simple format:  "), UnicodeString("04/04/97 23:00 GMT+00:00"),
                UnicodeString("MM/dd/yy HH:mm z"),
            UnicodeString("full format:    "), UnicodeString("Friday, April 4, 1997 11:00:00 o'clock PM GMT+00:00"),
                UnicodeString("EEEE, MMMM d, yyyy h:mm:ss 'o''clock' a z"),
            UnicodeString("long format:    "), UnicodeString("April 4, 1997 11:00:00 PM GMT+00:00"),
                UnicodeString("MMMM d, yyyy h:mm:ss a z"),
            UnicodeString("default format: "), UnicodeString("04-Apr-97 11:00:00 PM"),
                UnicodeString("dd-MMM-yy h:mm:ss a"),
            UnicodeString("short format:   "), UnicodeString("4/4/97 11:00 PM"),
                UnicodeString("M/d/yy h:mm a")
        };
        int32_t DATA_length = (int32_t)(sizeof(DATA) / sizeof(DATA[0]));

        for (int32_t i=0; i<DATA_length; i+=3) {
            DateFormat *fmt = new SimpleDateFormat(DATA[i+2], Locale::getEnglish(), status);
            if(failure(status, "new SimpleDateFormat")) break;
            fmt->setCalendar(*greenwichcalendar);
            UnicodeString result;
            result = fmt->format(greenwichdate, result);
            logln(DATA[i] + result);
            if (result != DATA[i+1]) 
                errln("FAIL: Expected " + DATA[i+1] + ", got " + result);
            delete fmt;
        }
    //}
    //finally {
        TimeZone::adoptDefault(saveDefault);
    //}
        delete testdefault;
        delete greenwichcalendar;
        delete thedefault;


}
 
// -------------------------------------
 
/**
 * Test the formatting of dates in different locales.
 */
void
DateFormatTest::TestLocaleDateFormat() // Bug 495
{
    UDate testDate = date(97, UCAL_SEPTEMBER, 15);
    DateFormat *dfFrench = DateFormat::createDateTimeInstance(DateFormat::FULL, 
        DateFormat::FULL, Locale::getFrench());
    DateFormat *dfUS = DateFormat::createDateTimeInstance(DateFormat::FULL, 
        DateFormat::FULL, Locale::getUS());
    UnicodeString expectedFRENCH ( "lundi 15 septembre 1997 00 h 00 HAP (\\u00C9UA)" );
    expectedFRENCH = expectedFRENCH.unescape();
    //UnicodeString expectedUS ( "Monday, September 15, 1997 12:00:00 o'clock AM PDT" );
    UnicodeString expectedUS ( "Monday, September 15, 1997 12:00:00 AM PDT" );
    logln((UnicodeString)"Date set to : " + dateToString(testDate));
    UnicodeString out; 
    dfFrench->format(testDate, out);
    logln((UnicodeString)"Date Formated with French Locale " + out);
    if (!(out == expectedFRENCH))
        errln((UnicodeString)"FAIL: Expected " + expectedFRENCH);
    out.truncate(0);
    dfUS->format(testDate, out);
    logln((UnicodeString)"Date Formated with US Locale " + out);
    if (!(out == expectedUS))
        errln((UnicodeString)"FAIL: Expected " + expectedUS);
    delete dfUS;
    delete dfFrench;
}

/**
 * Test DateFormat(Calendar) API
 */
void DateFormatTest::TestDateFormatCalendar() {
    DateFormat *date=0, *time=0, *full=0;
    Calendar *cal=0;
    UnicodeString str;
    ParsePosition pos;
    UDate when;
    UErrorCode ec = U_ZERO_ERROR;

    /* Create a formatter for date fields. */
    date = DateFormat::createDateInstance(DateFormat::kShort, Locale::getUS());
    if (date == NULL) {
        errln("FAIL: createDateInstance failed");
        goto FAIL;
    }

    /* Create a formatter for time fields. */
    time = DateFormat::createTimeInstance(DateFormat::kShort, Locale::getUS());
    if (time == NULL) {
        errln("FAIL: createTimeInstance failed");
        goto FAIL;
    }

    /* Create a full format for output */
    full = DateFormat::createDateTimeInstance(DateFormat::kFull, DateFormat::kFull,
                                              Locale::getUS());
    if (full == NULL) {
        errln("FAIL: createInstance failed");
        goto FAIL;
    }

    /* Create a calendar */
    cal = Calendar::createInstance(Locale::getUS(), ec);
    if (cal == NULL || U_FAILURE(ec)) {
        errln((UnicodeString)"FAIL: Calendar::createInstance failed with " + 
              u_errorName(ec));
        goto FAIL;
    }

    /* Parse the date */
    cal->clear();
    str = UnicodeString("4/5/2001", "");
    pos.setIndex(0);
    date->parse(str, *cal, pos);
    if (pos.getIndex() != str.length()) {
        errln((UnicodeString)"FAIL: DateFormat::parse(4/5/2001) failed at " +
              pos.getIndex());
        goto FAIL;
    }

    /* Parse the time */
    str = UnicodeString("5:45 PM", "");
    pos.setIndex(0);
    time->parse(str, *cal, pos);
    if (pos.getIndex() != str.length()) {
        errln((UnicodeString)"FAIL: DateFormat::parse(17:45) failed at " +
              pos.getIndex());
        goto FAIL;
    }
    
    /* Check result */
    when = cal->getTime(ec);
    if (U_FAILURE(ec)) {
        errln((UnicodeString)"FAIL: cal->getTime() failed with " + u_errorName(ec));
        goto FAIL;
    }
    str.truncate(0);
    full->format(when, str);
    // Thursday, April 5, 2001 5:45:00 PM PDT 986517900000
    if (when == 986517900000.0) {
        logln("Ok: Parsed result: " + str);
    } else {
        errln("FAIL: Parsed result: " + str + ", exp 4/5/2001 5:45 PM");
    }

 FAIL:    
    delete date;
    delete time;
    delete full;
    delete cal;
}

/**
 * Test DateFormat's parsing of space characters.  See jitterbug 1916.
 */
void DateFormatTest::TestSpaceParsing() {
    const char* DATA[] = {
        "yyyy MM dd HH:mm:ss",

        // pattern, input, expected parse or NULL if expect parse failure
        "MMMM d yy", " 04 05 06",  NULL, // MMMM wants Apr/April
        NULL,        "04 05 06",   NULL,
        "MM d yy",   " 04 05 06",  "2006 04 05 00:00:00",
        NULL,        "04 05 06",   "2006 04 05 00:00:00",
        "MMMM d yy", " Apr 05 06", "2006 04 05 00:00:00",
        NULL,        "Apr 05 06",  "2006 04 05 00:00:00",
    };
    const int32_t DATA_len = sizeof(DATA)/sizeof(DATA[0]);

    expectParse(DATA, DATA_len, Locale("en"));
}

/**
 * Test handling of "HHmmss" pattern.
 */
void DateFormatTest::TestExactCountFormat() {
    const char* DATA[] = {
        "yyyy MM dd HH:mm:ss",

        // pattern, input, expected parse or NULL if expect parse failure
        "HHmmss", "123456", "1970 01 01 12:34:56",
        NULL,     "12345",  "1970 01 01 01:23:45",
        NULL,     "1234",   NULL,
        NULL,     "00-05",  NULL,
        NULL,     "12-34",  NULL,
        NULL,     "00+05",  NULL,
        "ahhmm",  "PM730",  "1970 01 01 19:30:00",
    };
    const int32_t DATA_len = sizeof(DATA)/sizeof(DATA[0]);

    expectParse(DATA, DATA_len, Locale("en"));
}

/**
 * Test handling of white space.
 */
void DateFormatTest::TestWhiteSpaceParsing() {
    const char* DATA[] = {
        "yyyy MM dd",
        
        // pattern, input, expected parse or null if expect parse failure
        
        // Pattern space run should parse input text space run
        "MM   d yy",   " 04 01 03",    "2003 04 01",
        NULL,          " 04  01   03 ", "2003 04 01",
    };
    const int32_t DATA_len = sizeof(DATA)/sizeof(DATA[0]);
    
    expectParse(DATA, DATA_len, Locale("en"));
}


void DateFormatTest::TestInvalidPattern() {
    UErrorCode ec = U_ZERO_ERROR;
    SimpleDateFormat f(UnicodeString("Yesterday"), ec);
    UnicodeString out;
    FieldPosition pos;
    f.format((UDate)0, out, pos);
    logln(out);
    // The bug is that the call to format() will crash.  By not
    // crashing, the test passes.
}

void DateFormatTest::TestGreekMay() {
    UErrorCode ec = U_ZERO_ERROR;
    UDate date = -9896080848000.0;
    SimpleDateFormat fmt("EEEE, dd MMMM yyyy h:mm:ss a", Locale("el", "", ""), ec);
    if (!assertSuccess("SimpleDateFormat::ct", ec)) return;
    UnicodeString str;
    fmt.format(date, str);
    ParsePosition pos(0);
    UDate d2 = fmt.parse(str, pos);
    if (date != d2) {
        errln("FAIL: unable to parse strings where case-folding changes length");
    }
}

/**
 * Test parsing.  Input is an array that starts with the following
 * header:
 *
 * [0]   = pattern string to parse [i+2] with
 *
 * followed by test cases, each of which is 3 array elements:
 *
 * [i]   = pattern, or NULL to reuse prior pattern
 * [i+1] = input string
 * [i+2] = expected parse result (parsed with pattern [0])
 *
 * If expect parse failure, then [i+2] should be NULL.
 */
void DateFormatTest::expectParse(const char** data, int32_t data_length,
                                 const Locale& loc) {
    const UDate FAIL = (UDate) -1;
    const UnicodeString FAIL_STR("parse failure");
    int32_t i = 0;

    UErrorCode ec = U_ZERO_ERROR;
    SimpleDateFormat fmt("", loc, ec);
    SimpleDateFormat ref(data[i++], loc, ec);
    SimpleDateFormat gotfmt("G yyyy MM dd HH:mm:ss z", loc, ec);
    if (U_FAILURE(ec)) {
        errln("FAIL: SimpleDateFormat constructor");
        return;
    }

    const char* currentPat = NULL;
    while (i<data_length) {
        const char* pattern  = data[i++];
        const char* input    = data[i++];
        const char* expected = data[i++];

        ec = U_ZERO_ERROR;
        if (pattern != NULL) {
            fmt.applyPattern(pattern);
            currentPat = pattern;
        }
        UDate got = fmt.parse(input, ec);
        UnicodeString gotstr(FAIL_STR);
        if (U_FAILURE(ec)) {
            got = FAIL;
        } else {
            gotstr.remove();
            gotfmt.format(got, gotstr);
        }

        UErrorCode ec2 = U_ZERO_ERROR;
        UDate exp = FAIL;
        UnicodeString expstr(FAIL_STR);
        if (expected != NULL) {
            expstr = expected;
            exp = ref.parse(expstr, ec2);
            if (U_FAILURE(ec2)) {
                // This only happens if expected is in wrong format --
                // should never happen once test is debugged.
                errln("FAIL: Internal test error");
                return;
            }
        }

        if (got == exp) {
            logln((UnicodeString)"Ok: " + input + " x " +
                  currentPat + " => " + gotstr);                
        } else {
            errln((UnicodeString)"FAIL: " + input + " x " +
                  currentPat + " => " + gotstr + ", expected " +
                  expstr);
        }
    }    
}

/**
 * Test formatting and parsing.  Input is an array that starts
 * with the following header:
 *
 * [0]   = pattern string to parse [i+2] with
 *
 * followed by test cases, each of which is 3 array elements:
 *
 * [i]   = pattern, or null to reuse prior pattern
 * [i+1] = control string, either "fp", "pf", or "F".
 * [i+2..] = data strings
 *
 * The number of data strings depends on the control string.
 * Examples:
 * 1. "y/M/d H:mm:ss.SS", "fp", "2004 03 10 16:36:31.567", "2004/3/10 16:36:31.56", "2004 03 10 16:36:31.560",
 * 'f': Format date [i+2] (as parsed using pattern [0]) and expect string [i+3].
 * 'p': Parse string [i+3] and expect date [i+4].
 *
 * 2. "y/M/d H:mm:ss.SSS", "F", "2004 03 10 16:36:31.567", "2004/3/10 16:36:31.567"
 * 'F': Format date [i+2] and expect string [i+3],
 *      then parse string [i+3] and expect date [i+2].
 *
 * 3. "y/M/d H:mm:ss.SSSS", "pf", "2004/3/10 16:36:31.5679", "2004 03 10 16:36:31.567", "2004/3/10 16:36:31.5670",
 * 'p': Parse string [i+2] and expect date [i+3].
 * 'f': Format date [i+3] and expect string [i+4].
 */
void DateFormatTest::expect(const char** data, int32_t data_length,
                            const Locale& loc) {
    int32_t i = 0;
    UErrorCode ec = U_ZERO_ERROR;
    UnicodeString str, str2;
    SimpleDateFormat fmt("", loc, ec);
    SimpleDateFormat ref(data[i++], loc, ec);
    SimpleDateFormat univ("EE G yyyy MM dd HH:mm:ss.SSS z", loc, ec);
    if (!assertSuccess("construct SimpleDateFormat", ec)) return;

    UnicodeString currentPat;
    while (i<data_length) {
        const char* pattern  = data[i++];
        if (pattern != NULL) {
            fmt.applyPattern(pattern);
            currentPat = pattern;
        }

        const char* control = data[i++];

        if (uprv_strcmp(control, "fp") == 0) {
            // 'f'
            const char* datestr = data[i++];
            const char* string = data[i++];
            UDate date = ref.parse(datestr, ec);
            if (!assertSuccess("parse", ec)) return;
            assertEquals((UnicodeString)"\"" + currentPat + "\".format(" + datestr + ")",
                         string,
                         fmt.format(date, str.remove()));
            // 'p'
            datestr = data[i++];
            date = ref.parse(datestr, ec);
            if (!assertSuccess("parse", ec)) return;
            UDate parsedate = fmt.parse(string, ec);
            if (assertSuccess((UnicodeString)"\"" + currentPat + "\".parse(" + string + ")", ec)) {
                assertEquals((UnicodeString)"\"" + currentPat + "\".parse(" + string + ")",
                             univ.format(date, str.remove()),
                             univ.format(parsedate, str2.remove()));
            }
        }

        else if (uprv_strcmp(control, "pf") == 0) {
            // 'p'
            const char* string = data[i++];
            const char* datestr = data[i++];
            UDate date = ref.parse(datestr, ec);
            if (!assertSuccess("parse", ec)) return;
            UDate parsedate = fmt.parse(string, ec);
            if (assertSuccess((UnicodeString)"\"" + currentPat + "\".parse(" + string + ")", ec)) {
                assertEquals((UnicodeString)"\"" + currentPat + "\".parse(" + string + ")",
                             univ.format(date, str.remove()),
                             univ.format(parsedate, str2.remove()));
            }
            // 'f'
            string = data[i++];
            assertEquals((UnicodeString)"\"" + currentPat + "\".format(" + datestr + ")",
                         string,
                         fmt.format(date, str.remove()));
        }

        else if (uprv_strcmp(control, "F") == 0) {
            const char* datestr  = data[i++];
            const char* string   = data[i++];
            UDate date = ref.parse(datestr, ec);
            if (!assertSuccess("parse", ec)) return;
            assertEquals((UnicodeString)"\"" + currentPat + "\".format(" + datestr + ")",
                         string,
                         fmt.format(date, str.remove()));

            UDate parsedate = fmt.parse(string, ec);
            if (assertSuccess((UnicodeString)"\"" + currentPat + "\".parse(" + string + ")", ec)) {
                assertEquals((UnicodeString)"\"" + currentPat + "\".parse(" + string + ")",
                             univ.format(date, str.remove()),
                             univ.format(parsedate, str2.remove()));
            }
        }

        else {
            errln((UnicodeString)"FAIL: Invalid control string " + control);
            return;
        }
    }
}

void DateFormatTest::TestGenericTime() {
#if U_ICU_VERSION_MAJOR_NUM > 3 || U_ICU_VERSION_MINOR_NUM > 4
# define FIX_FAILING_WALLTIME_TESTS
#else
  logln("Warning, skipping some tests here!");
#endif

  // any zone pattern should parse any zone
  const Locale en("en");
  const char* ZDATA[] = {
        "yyyy MM dd HH:mm zzz",
        // round trip
        "y/M/d H:mm zzzz", "F", "2004 01 01 01:00 PST", "2004/1/1 1:00 Pacific Standard Time",
        "y/M/d H:mm zzz", "F", "2004 01 01 01:00 PST", "2004/1/1 1:00 PST",
        "y/M/d H:mm vvvv", "F", "2004 01 01 01:00 PST", "2004/1/1 1:00 Pacific Time",
        "y/M/d H:mm vvv", "F", "2004 01 01 01:00 PST", "2004/1/1 1:00 PT",
        // non-generic timezone string influences dst offset even if wrong for date/time
        "y/M/d H:mm zzz", "pf", "2004/1/1 1:00 PDT", "2004 01 01 01:00 PDT", "2004/1/1 0:00 PST",
        "y/M/d H:mm vvvv", "pf", "2004/1/1 1:00 PDT", "2004 01 01 01:00 PDT", "2004/1/1 0:00 Pacific Time",
        "y/M/d H:mm zzz", "pf", "2004/7/1 1:00 PST", "2004 07 01 02:00 PDT", "2004/7/1 2:00 PDT",
        "y/M/d H:mm vvvv", "pf", "2004/7/1 1:00 PST", "2004 07 01 02:00 PDT", "2004/7/1 2:00 Pacific Time",
        // generic timezone generates dst offset appropriate for local time
        "y/M/d H:mm zzz", "pf", "2004/1/1 1:00 PT", "2004 01 01 01:00 PST", "2004/1/1 1:00 PST",
        "y/M/d H:mm vvvv", "pf", "2004/1/1 1:00 PT", "2004 01 01 01:00 PST", "2004/1/1 1:00 Pacific Time",
        "y/M/d H:mm zzz", "pf", "2004/7/1 1:00 PT", "2004 07 01 01:00 PDT", "2004/7/1 1:00 PDT",
        "y/M/d H:mm vvvv", "pf", "2004/7/1 1:00 PT", "2004 07 01 01:00 PDT", "2004/7/1 1:00 Pacific Time",
        // daylight savings time transition edge cases.
        // time to parse does not really exist, PT interpreted as earlier time
        "y/M/d H:mm zzz", "pf", "2005/4/3 2:30 PT", "2005 04 03 01:30 PST", "2005/4/3 1:30 PST", // adjust earlier
        "y/M/d H:mm zzz", "pf", "2005/4/3 2:30 PST", "2005 04 03 03:30 PDT", "2005/4/3 3:30 PDT",
        "y/M/d H:mm zzz", "pf", "2005/4/3 2:30 PDT", "2005 04 03 01:30 PST", "2005/4/3 1:30 PST",
        "y/M/d H:mm vvv", "pf", "2005/4/3 2:30 PT", "2005 04 03 01:30 PST", "2005/4/3 1:30 PT", // adjust earlier
        "y/M/d H:mm vvv", "pf", "2005/4/3 2:30 PST", "2005 04 03 03:30 PDT", "2005/4/3 3:30 PT",
        "y/M/d H:mm vvv", "pf", "2005/4/3 2:30 PDT", "2005 04 03 01:30 PST", "2005/4/3 1:30 PT",
        "y/M/d H:mm", "pf", "2005/4/3 2:30", "2005 04 03 01:30 PST", "2005/4/3 1:30",
        // time to parse is ambiguous, PT interpreted as earlier time (?)
#if defined(FIX_FAILING_WALLTIME_TESTS)
        "y/M/d H:mm zzz", "pf", "2004/10/31 1:30 PT", "2004 10 31 01:30 PDT", "2004/10/31 1:30 PDT", // fail
#endif
        "y/M/d H:mm zzz", "pf", "2004/10/31 1:30 PST", "2004 10 31 01:30 PST", "2004/10/31 1:30 PST",
        "y/M/d H:mm zzz", "pf", "2004/10/31 1:30 PDT", "2004 10 31 01:30 PDT", "2004/10/31 1:30 PDT",
#if defined(FIX_FAILING_WALLTIME_TESTS)
        "y/M/d H:mm vvv", "pf", "2004/10/31 1:30 PT", "2004 10 31 01:30 PDT", "2004/10/31 1:30 PT", // fail
#endif
        "y/M/d H:mm vvv", "pf", "2004/10/31 1:30 PST", "2004 10 31 01:30 PST", "2004/10/31 1:30 PT",
        "y/M/d H:mm vvv", "pf", "2004/10/31 1:30 PDT", "2004 10 31 01:30 PDT", "2004/10/31 1:30 PT",
#if defined(FIX_FAILING_WALLTIME_TESTS)
        "y/M/d H:mm", "pf", "2004/10/31 1:30", "2004 10 31 01:30 PDT", "2004/10/31 1:30", // fail
#endif
  };
  const int32_t ZDATA_length = sizeof(ZDATA)/ sizeof(ZDATA[0]);
  expect(ZDATA, ZDATA_length, en);

  UErrorCode status = U_ZERO_ERROR;

  logln("cross format/parse tests");
  UnicodeString basepat("yy/MM/dd H:mm ");
  SimpleDateFormat formats[] = { 
    SimpleDateFormat(basepat + "vvv", en, status),
    SimpleDateFormat(basepat + "vvvv", en, status),
    SimpleDateFormat(basepat + "zzz", en, status),
    SimpleDateFormat(basepat + "zzzz", en, status)
  };
  const int32_t formats_length = sizeof(formats)/sizeof(formats[0]);

  UnicodeString test;
  SimpleDateFormat univ("yyyy MM dd HH:mm zzz", en, status);
  const UnicodeString times[] = { 
    "2004 01 02 03:04 PST", 
    "2004 07 08 09:10 PDT" 
  };
  int32_t times_length = sizeof(times)/sizeof(times[0]);
  for (int i = 0; i < times_length; ++i) {
    UDate d = univ.parse(times[i], status);
    logln(UnicodeString("\ntime: ") + d);
    for (int j = 0; j < formats_length; ++j) {
      test.remove();
      formats[j].format(d, test);
      logln("\ntest: '" + test + "'");
      for (int k = 0; k < formats_length; ++k) {
        UDate t = formats[k].parse(test, status);
        if (U_SUCCESS(status)) {
          if (d != t) {
            errln((UnicodeString)"FAIL: format " + k + 
                  " incorrectly parsed output of format " + j + 
                  " (" + test + "), returned " +
                  dateToString(t) + " instead of " + dateToString(d));
          } else {
            logln((UnicodeString)"OK: format " + k + " parsed ok");
          }
        } else if (status == U_PARSE_ERROR) {
          errln((UnicodeString)"FAIL: format " + k + 
                " could not parse output of format " + j + 
                " (" + test + ")");
        }
      }
    }
  }
}

void DateFormatTest::TestGenericTimeZoneOrder() {
  // generic times should parse the same no matter what the placement of the time zone string
  // should work for standard and daylight times

  const char* XDATA[] = {
    "yyyy MM dd HH:mm zzz",
    // standard time, explicit daylight/standard
    "y/M/d H:mm zzz", "pf", "2004/1/1 1:00 PT", "2004 01 01 01:00 PST", "2004/1/1 1:00 PST",
    "y/M/d zzz H:mm", "pf", "2004/1/1 PT 1:00", "2004 01 01 01:00 PST", "2004/1/1 PST 1:00",
    "zzz y/M/d H:mm", "pf", "PT 2004/1/1 1:00", "2004 01 01 01:00 PST", "PST 2004/1/1 1:00",

    // standard time, generic
    "y/M/d H:mm vvvv", "pf", "2004/1/1 1:00 PT", "2004 01 01 01:00 PST", "2004/1/1 1:00 Pacific Time",
    "y/M/d vvvv H:mm", "pf", "2004/1/1 PT 1:00", "2004 01 01 01:00 PST", "2004/1/1 Pacific Time 1:00",
    "vvvv y/M/d H:mm", "pf", "PT 2004/1/1 1:00", "2004 01 01 01:00 PST", "Pacific Time 2004/1/1 1:00",

    // dahylight time, explicit daylight/standard
    "y/M/d H:mm zzz", "pf", "2004/7/1 1:00 PT", "2004 07 01 01:00 PDT", "2004/7/1 1:00 PDT",
    "y/M/d zzz H:mm", "pf", "2004/7/1 PT 1:00", "2004 07 01 01:00 PDT", "2004/7/1 PDT 1:00",
    "zzz y/M/d H:mm", "pf", "PT 2004/7/1 1:00", "2004 07 01 01:00 PDT", "PDT 2004/7/1 1:00",

    // daylight time, generic
    "y/M/d H:mm vvvv", "pf", "2004/7/1 1:00 PT", "2004 07 01 01:00 PDT", "2004/7/1 1:00 Pacific Time",
    "y/M/d vvvv H:mm", "pf", "2004/7/1 PT 1:00", "2004 07 01 01:00 PDT", "2004/7/1 Pacific Time 1:00",
    "vvvv y/M/d H:mm", "pf", "PT 2004/7/1 1:00", "2004 07 01 01:00 PDT", "Pacific Time 2004/7/1 1:00",
  };
  const int32_t XDATA_length = sizeof(XDATA)/sizeof(XDATA[0]);
  Locale en("en");
  expect(XDATA, XDATA_length, en);
}

#endif /* #if !UCONFIG_NO_FORMATTING */

//eof