// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/********************************************************************
 * COPYRIGHT:
 * Copyright (c) 1997-2016, International Business Machines Corporation and
 * others. All Rights Reserved.
 ********************************************************************/

#include "unicode/utypes.h"

#if !UCONFIG_NO_FORMATTING


//TODO: define it in compiler flag
//#define DTIFMTTS_DEBUG 1


#ifdef DTIFMTTS_DEBUG
#include <iostream>
#endif

#include "dtifmtts.h"

#include "cmemory.h"
#include "cstr.h"
#include "cstring.h"
#include "simplethread.h"
#include "japancal.h"
#include "unicode/gregocal.h"
#include "unicode/dtintrv.h"
#include "unicode/dtitvinf.h"
#include "unicode/dtitvfmt.h"
#include "unicode/localpointer.h"
#include "unicode/timezone.h"



#ifdef DTIFMTTS_DEBUG
//#define PRINTMESG(msg) { std::cout << "(" << __FILE__ << ":" << __LINE__ << ") " << msg << "\n"; }
#define PRINTMESG(msg) { std::cout << msg; }
#endif

#include <stdio.h>


void DateIntervalFormatTest::runIndexedTest( int32_t index, UBool exec, const char* &name, char* /*par*/ ) {
    if (exec) logln("TestSuite DateIntervalFormat");
    TESTCASE_AUTO_BEGIN;
    TESTCASE_AUTO(testAPI);
    TESTCASE_AUTO(testFormat);
    TESTCASE_AUTO(testFormatUserDII);
    TESTCASE_AUTO(testSetIntervalPatternNoSideEffect);
    TESTCASE_AUTO(testYearFormats);
    TESTCASE_AUTO(testStress);
    TESTCASE_AUTO(testTicket11583_2);
    TESTCASE_AUTO(testTicket11985);
    TESTCASE_AUTO(testTicket11669);
    TESTCASE_AUTO(testTicket12065);
    TESTCASE_AUTO(testFormattedDateInterval);
    TESTCASE_AUTO(testCreateInstanceForAllLocales);
    TESTCASE_AUTO(testTicket20707);
    TESTCASE_AUTO(testFormatMillisecond);
    TESTCASE_AUTO(testHourMetacharacters);
    TESTCASE_AUTO(testContext);
    TESTCASE_AUTO(testTicket21222GregorianEraDiff);
    TESTCASE_AUTO(testTicket21222ROCEraDiff);
    TESTCASE_AUTO(testTicket21222JapaneseEraDiff);
    TESTCASE_AUTO(testTicket21939);
    TESTCASE_AUTO(testTicket20710_FieldIdentity);
    TESTCASE_AUTO(testTicket20710_IntervalIdentity);
    TESTCASE_AUTO_END;
}

/**
 * Test various generic API methods of DateIntervalFormat for API coverage.
 */
void DateIntervalFormatTest::testAPI() {

    /* ====== Test create interval instance with default locale and skeleton
     */
    UErrorCode status = U_ZERO_ERROR;
    logln("Testing DateIntervalFormat create instance with default locale and skeleton");

    DateIntervalFormat* dtitvfmt = DateIntervalFormat::createInstance(UDAT_YEAR_MONTH_DAY, status);
    if(U_FAILURE(status)) {
        dataerrln("ERROR: Could not create DateIntervalFormat (skeleton + default locale) - exiting");
        return;
    } else {
        delete dtitvfmt;
    }


    /* ====== Test create interval instance with given locale and skeleton
     */
    status = U_ZERO_ERROR;
    logln("Testing DateIntervalFormat create instance with given locale and skeleton");

    dtitvfmt = DateIntervalFormat::createInstance(UDAT_YEAR_MONTH_DAY, Locale::getJapanese(), status);
    if(U_FAILURE(status)) {
        dataerrln("ERROR: Could not create DateIntervalFormat (skeleton + locale) - exiting");
        return;
    } else {
        delete dtitvfmt;
    }


    /* ====== Test create interval instance with dateIntervalInfo and skeleton
     */
    status = U_ZERO_ERROR;
    logln("Testing DateIntervalFormat create instance with dateIntervalInfo  and skeleton");

    DateIntervalInfo* dtitvinf = new DateIntervalInfo(Locale::getSimplifiedChinese(), status);

    dtitvfmt = DateIntervalFormat::createInstance("EEEdMMMyhms", *dtitvinf, status);
    delete dtitvinf;

    if(U_FAILURE(status)) {
        dataerrln("ERROR: Could not create DateIntervalFormat (skeleton + DateIntervalInfo + default locale) - exiting");
        return;
    } else {
        delete dtitvfmt;
    }


    /* ====== Test create interval instance with dateIntervalInfo and skeleton
     */
    status = U_ZERO_ERROR;
    logln("Testing DateIntervalFormat create instance with dateIntervalInfo  and skeleton");

    dtitvinf = new DateIntervalInfo(Locale::getSimplifiedChinese(), status);

    dtitvfmt = DateIntervalFormat::createInstance("EEEdMMMyhms", Locale::getSimplifiedChinese(), *dtitvinf, status);
    delete dtitvinf;
    if(U_FAILURE(status)) {
        dataerrln("ERROR: Could not create DateIntervalFormat (skeleton + DateIntervalInfo + locale) - exiting");
        return;
    }
    // not deleted, test clone


    // ====== Test clone()
    status = U_ZERO_ERROR;
    logln("Testing DateIntervalFormat clone");

    DateIntervalFormat* another = dtitvfmt->clone();
    if ( (*another) != (*dtitvfmt) ) {
        dataerrln("%s:%d ERROR: clone failed", __FILE__, __LINE__);
    }


    // ====== Test getDateIntervalInfo, setDateIntervalInfo, adoptDateIntervalInfo
    status = U_ZERO_ERROR;
    logln("Testing DateIntervalFormat getDateIntervalInfo");
    const DateIntervalInfo* inf = another->getDateIntervalInfo();
    dtitvfmt->setDateIntervalInfo(*inf, status);
    const DateIntervalInfo* anotherInf = dtitvfmt->getDateIntervalInfo();
    if ( (*inf) != (*anotherInf) || U_FAILURE(status) ) {
        dataerrln("ERROR: getDateIntervalInfo/setDateIntervalInfo failed");
    }

    {
        // We make sure that setDateIntervalInfo does not corrupt the cache. See ticket 9919.
        status = U_ZERO_ERROR;
        logln("Testing DateIntervalFormat setDateIntervalInfo");
        const Locale &enLocale = Locale::getEnglish();
        LocalPointer<DateIntervalFormat> dif(DateIntervalFormat::createInstance("yMd", enLocale, status));
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        UnicodeString expected;
        LocalPointer<Calendar> fromTime(Calendar::createInstance(enLocale, status));
        LocalPointer<Calendar> toTime(Calendar::createInstance(enLocale, status));
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        FieldPosition pos(FieldPosition::DONT_CARE);
        fromTime->set(2013, 3, 26);
        toTime->set(2013, 3, 28);
        dif->format(*fromTime, *toTime, expected, pos, status);
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        LocalPointer<DateIntervalInfo> dii(new DateIntervalInfo(Locale::getEnglish(), status), status);
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        dii->setIntervalPattern(ctou("yMd"), UCAL_DATE, ctou("M/d/y \\u2013 d"), status);
        dif->setDateIntervalInfo(*dii, status);
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        dif.adoptInstead(DateIntervalFormat::createInstance("yMd", enLocale, status));
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        UnicodeString actual;
        pos = 0;
        dif->format(*fromTime, *toTime, actual, pos, status);
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        if (expected != actual) {
            errln("DateIntervalFormat.setIntervalInfo should have no side effects.");
        }
    }

    /*
    status = U_ZERO_ERROR;
    DateIntervalInfo* nonConstInf = inf->clone();
    dtitvfmt->adoptDateIntervalInfo(nonConstInf, status);
    anotherInf = dtitvfmt->getDateIntervalInfo();
    if ( (*inf) != (*anotherInf) || U_FAILURE(status) ) {
        dataerrln("ERROR: adoptDateIntervalInfo failed");
    }
    */

    // ====== Test getDateFormat, setDateFormat, adoptDateFormat

    status = U_ZERO_ERROR;
    logln("Testing DateIntervalFormat getDateFormat");
    /*
    const DateFormat* fmt = another->getDateFormat();
    dtitvfmt->setDateFormat(*fmt, status);
    const DateFormat* anotherFmt = dtitvfmt->getDateFormat();
    if ( (*fmt) != (*anotherFmt) || U_FAILURE(status) ) {
        dataerrln("ERROR: getDateFormat/setDateFormat failed");
    }

    status = U_ZERO_ERROR;
    DateFormat* nonConstFmt = fmt->clone();
    dtitvfmt->adoptDateFormat(nonConstFmt, status);
    anotherFmt = dtitvfmt->getDateFormat();
    if ( (*fmt) != (*anotherFmt) || U_FAILURE(status) ) {
        dataerrln("ERROR: adoptDateFormat failed");
    }
    delete fmt;
    */


    // ======= Test getStaticClassID()

    logln("Testing getStaticClassID()");


    if(dtitvfmt->getDynamicClassID() != DateIntervalFormat::getStaticClassID()) {
        errln("ERROR: getDynamicClassID() didn't return the expected value");
    }

    delete another;

    // ====== test constructor/copy constructor and assignment
    /* they are protected, no test
    logln("Testing DateIntervalFormat constructor and assignment operator");
    status = U_ZERO_ERROR;

    DateFormat* constFmt = dtitvfmt->getDateFormat()->clone();
    inf = dtitvfmt->getDateIntervalInfo()->clone();


    DateIntervalFormat* dtifmt = new DateIntervalFormat(fmt, inf, status);
    if(U_FAILURE(status)) {
        dataerrln("ERROR: Could not create DateIntervalFormat (default) - exiting");
        return;
    }

    DateIntervalFormat* dtifmt2 = new(dtifmt);
    if ( (*dtifmt) != (*dtifmt2) ) {
        dataerrln("ERROR: Could not create DateIntervalFormat (default) - exiting");
        return;
    }

    DateIntervalFormat dtifmt3 = (*dtifmt);
    if ( (*dtifmt) != dtifmt3 ) {
        dataerrln("ERROR: Could not create DateIntervalFormat (default) - exiting");
        return;
    }

    delete dtifmt2;
    delete dtifmt3;
    delete dtifmt;
    */


    //===== test format and parse ==================
    Formattable formattable;
    formattable.setInt64(10);
    UnicodeString res;
    FieldPosition pos(FieldPosition::DONT_CARE);
    status = U_ZERO_ERROR;
    dtitvfmt->format(formattable, res, pos, status);
    if ( status != U_ILLEGAL_ARGUMENT_ERROR ) {
        dataerrln("ERROR: format non-date-interval object should set U_ILLEGAL_ARGUMENT_ERROR - exiting");
        return;
    }

    DateInterval* dtitv = new DateInterval(3600*24*365, 3600*24*366);
    formattable.adoptObject(dtitv);
    res.remove();
    pos = 0;
    status = U_ZERO_ERROR;
    dtitvfmt->format(formattable, res, pos, status);
    if ( U_FAILURE(status) ) {
        dataerrln("ERROR: format date interval failed - exiting");
        return;
    }

    const DateFormat* dfmt = dtitvfmt->getDateFormat();
    Calendar* fromCal = dfmt->getCalendar()->clone();
    Calendar* toCal = dfmt->getCalendar()->clone();
    res.remove();
    pos = 0;
    status = U_ZERO_ERROR;
    dtitvfmt->format(*fromCal, *toCal, res, pos, status);
    if ( U_FAILURE(status) ) {
        dataerrln("ERROR: format date interval failed - exiting");
        return;
    }
    delete fromCal;
    delete toCal;


    Formattable fmttable;
    status = U_ZERO_ERROR;
    // TODO: why do I need cast?
    (dynamic_cast<Format*>(dtitvfmt))->parseObject(res, fmttable, status);
    if ( status != U_INVALID_FORMAT_ERROR ) {
        dataerrln("ERROR: parse should set U_INVALID_FORMAT_ERROR - exiting");
        return;
    }

    delete dtitvfmt;

    //====== test setting time zone
    logln("Testing DateIntervalFormat set & format with different time zones, get time zone");
    status = U_ZERO_ERROR;
    dtitvfmt = DateIntervalFormat::createInstance("MMMdHHmm", Locale::getEnglish(), status);
    if ( U_SUCCESS(status) ) {
        UDate date1 = 1299090600000.0; // 2011-Mar-02 1030 in US/Pacific, 2011-Mar-03 0330 in Asia/Tokyo
        UDate date2 = 1299115800000.0; // 2011-Mar-02 1730 in US/Pacific, 2011-Mar-03 1030 in Asia/Tokyo

        DateInterval * dtitv12 = new DateInterval(date1, date2);
        TimeZone * tzCalif = TimeZone::createTimeZone("US/Pacific");
        TimeZone * tzTokyo = TimeZone::createTimeZone("Asia/Tokyo");
        UnicodeString fmtCalif = UnicodeString(u"Mar 2, 10:30\u2009\u2013\u200917:30", -1);
        UnicodeString fmtTokyo = UnicodeString(u"Mar 3, 03:30\u2009\u2013\u200910:30", -1);

        dtitvfmt->adoptTimeZone(tzCalif);
        res.remove();
        pos = 0;
        status = U_ZERO_ERROR;
        dtitvfmt->format(dtitv12, res, pos, status);
        if ( U_SUCCESS(status) ) {
            if ( res.compare(fmtCalif) != 0 ) {
                errln("ERROR: DateIntervalFormat::format for tzCalif, expect " + fmtCalif + ", get " + res);
            }
        } else {
            errln("ERROR: DateIntervalFormat::format for tzCalif, status %s", u_errorName(status));
        }

        dtitvfmt->setTimeZone(*tzTokyo);
        res.remove();
        pos = 0;
        status = U_ZERO_ERROR;
        dtitvfmt->format(dtitv12, res, pos, status);
        if ( U_SUCCESS(status) ) {
            if ( res.compare(fmtTokyo) != 0 ) {
                errln("ERROR: DateIntervalFormat::format for tzTokyo, expect " + fmtTokyo + ", get " + res);
            }
        } else {
            errln("ERROR: DateIntervalFormat::format for tzTokyo, status %s", u_errorName(status));
        }

        if ( dtitvfmt->getTimeZone() != *tzTokyo ) {
            errln("ERROR: DateIntervalFormat::getTimeZone returns mismatch.");
        }

        delete tzTokyo; // tzCalif was owned by dtitvfmt which should have deleted it
        delete dtitv12;
        delete dtitvfmt;
    } else {
        errln("ERROR: DateIntervalFormat::createInstance(\"MdHH\", Locale::getEnglish(), ...), status %s", u_errorName(status));
    }
    //====== test format  in testFormat()

    //====== test DateInterval class (better coverage)
    DateInterval dtitv1(3600*24*365, 3600*24*366);
    DateInterval dtitv2(dtitv1);

    if (!(dtitv1 == dtitv2)) {
        errln("ERROR: Copy constructor failed for DateInterval.");
    }

    DateInterval dtitv3(3600*365, 3600*366);
    dtitv3 = dtitv1;
    if (!(dtitv3 == dtitv1)) {
        errln("ERROR: Equal operator failed for DateInterval.");
    }

    DateInterval *dtitv4 = dtitv1.clone();
    if (*dtitv4 != dtitv1) {
        errln("ERROR: Equal operator failed for DateInterval.");
    }
    delete dtitv4;
}


/**
 * Test format
 */
void DateIntervalFormatTest::testFormat() {
    // first item is date pattern
    // followed by a group of locale/from_data/to_data/skeleton/interval_data
    // Note that from_data/to_data are specified using era names from root, for the calendar specified by locale.
    const char* DATA[] = {
        "GGGGG y MM dd HH:mm:ss", // pattern for from_data/to_data
        // test root
        "root", "CE 2007 11 10 10:10:10", "CE 2007 12 10 10:10:10", "yM", "2007-11 \\u2013 2007-12",

        // test 'H' and 'h', using availableFormat in fallback
        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 10 15:10:10", "Hms", "10:10:10\\u2009\\u2013\\u200915:10:10",
        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 10 15:10:10", "hms", "10:10:10\\u202FAM\\u2009\\u2013\\u20093:10:10\\u202FPM",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "MMMM", "October 2007\\u2009\\u2013\\u2009October 2008",
        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "MMM", "Oct 2007\\u2009\\u2013\\u2009Oct 2008",
        // test skeleton with both date and time
        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dMMMyhm", "Nov 10, 2007, 10:10\\u202FAM\\u2009\\u2013\\u2009Nov 20, 2007, 10:10\\u202FAM",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 10 11:10:10", "dMMMyhm", "Nov 10, 2007, 10:10\\u2009\\u2013\\u200911:10\\u202FAM",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 10 11:10:10", "hms", "10:10:10\\u202FAM\\u2009\\u2013\\u200911:10:10\\u202FAM",
        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 10 11:10:10", "Hms", "10:10:10\\u2009\\u2013\\u200911:10:10",
        "en", "CE 2007 11 10 20:10:10", "CE 2007 11 10 21:10:10", "Hms", "20:10:10\\u2009\\u2013\\u200921:10:10",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EEEEdMMMMy", "Wednesday, October 10, 2007\\u2009\\u2013\\u2009Friday, October 10, 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "dMMMMy", "October 10, 2007\\u2009\\u2013\\u2009October 10, 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "dMMMM", "October 10, 2007\\u2009\\u2013\\u2009October 10, 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "MMMMy", "October 2007\\u2009\\u2013\\u2009October 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EEEEdMMMM", "Wednesday, October 10, 2007\\u2009\\u2013\\u2009Friday, October 10, 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EdMMMy", "Wed, Oct 10, 2007\\u2009\\u2013\\u2009Fri, Oct 10, 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "dMMMy", "Oct 10, 2007\\u2009\\u2013\\u2009Oct 10, 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "dMMM", "Oct 10, 2007\\u2009\\u2013\\u2009Oct 10, 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "MMMy", "Oct 2007\\u2009\\u2013\\u2009Oct 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EdMMM", "Wed, Oct 10, 2007\\u2009\\u2013\\u2009Fri, Oct 10, 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EdMy", "Wed, 10/10/2007\\u2009\\u2013\\u2009Fri, 10/10/2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "dMy", "10/10/2007\\u2009\\u2013\\u200910/10/2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "dM", "10/10/2007\\u2009\\u2013\\u200910/10/2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "My", "10/2007\\u2009\\u2013\\u200910/2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EdM", "Wed, 10/10/2007\\u2009\\u2013\\u2009Fri, 10/10/2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "d", "10/10/2007\\u2009\\u2013\\u200910/10/2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "Ed", "10 Wed\\u2009\\u2013\\u200910 Fri",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "y", "2007\\u2009\\u2013\\u20092008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "M", "10/2007\\u2009\\u2013\\u200910/2008",



        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "hm", "10/10/2007, 10:10\\u202FAM\\u2009\\u2013\\u200910/10/2008, 10:10\\u202FAM",
        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "Hm", "10/10/2007, 10:10\\u2009\\u2013\\u200910/10/2008, 10:10",
        "en", "CE 2007 10 10 20:10:10", "CE 2008 10 10 20:10:10", "Hm", "10/10/2007, 20:10\\u2009\\u2013\\u200910/10/2008, 20:10",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "hmv", "10/10/2007, 10:10\\u202FAM PT\\u2009\\u2013\\u200910/10/2008, 10:10\\u202FAM PT",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "hmz", "10/10/2007, 10:10\\u202FAM PDT\\u2009\\u2013\\u200910/10/2008, 10:10\\u202FAM PDT",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "h", "10/10/2007, 10\\u202FAM\\u2009\\u2013\\u200910/10/2008, 10\\u202FAM",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "hv", "10/10/2007, 10\\u202FAM PT\\u2009\\u2013\\u200910/10/2008, 10\\u202FAM PT",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "hz", "10/10/2007, 10\\u202FAM PDT\\u2009\\u2013\\u200910/10/2008, 10\\u202FAM PDT",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EEddMMyyyy", "Wed, 10/10/2007\\u2009\\u2013\\u2009Fri, 10/10/2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EddMMy", "Wed, 10/10/2007\\u2009\\u2013\\u2009Fri, 10/10/2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "hhmm", "10/10/2007, 10:10\\u202FAM\\u2009\\u2013\\u200910/10/2008, 10:10\\u202FAM",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "hhmmzz", "10/10/2007, 10:10\\u202FAM PDT\\u2009\\u2013\\u200910/10/2008, 10:10\\u202FAM PDT",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "hms", "10/10/2007, 10:10:10\\u202FAM\\u2009\\u2013\\u200910/10/2008, 10:10:10\\u202FAM",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "dMMMMMy", "O 10, 2007\\u2009\\u2013\\u2009O 10, 2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EEEEEdM", "W, 10/10/2007\\u2009\\u2013\\u2009F, 10/10/2008",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EEEEdMMMMy", "Wednesday, October 10\\u2009\\u2013\\u2009Saturday, November 10, 2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "dMMMMy", "October 10\\u2009\\u2013\\u2009November 10, 2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "dMMMM", "October 10\\u2009\\u2013\\u2009November 10",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "MMMMy", "October\\u2009\\u2013\\u2009November 2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EEEEdMMMM", "Wednesday, October 10\\u2009\\u2013\\u2009Saturday, November 10",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EdMMMy", "Wed, Oct 10\\u2009\\u2013\\u2009Sat, Nov 10, 2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "dMMMy", "Oct 10\\u2009\\u2013\\u2009Nov 10, 2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "dMMM", "Oct 10\\u2009\\u2013\\u2009Nov 10",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "MMMy", "Oct\\u2009\\u2013\\u2009Nov 2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EdMMM", "Wed, Oct 10\\u2009\\u2013\\u2009Sat, Nov 10",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EdMy", "Wed, 10/10/2007\\u2009\\u2013\\u2009Sat, 11/10/2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "dMy", "10/10/2007\\u2009\\u2013\\u200911/10/2007",


        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "My", "10/2007\\u2009\\u2013\\u200911/2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EdM", "Wed, 10/10\\u2009\\u2013\\u2009Sat, 11/10",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "d", "10/10\\u2009\\u2013\\u200911/10",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "Ed", "10 Wed\\u2009\\u2013\\u200910 Sat",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "y", "2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "M", "10\\u2009\\u2013\\u200911",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "MMM", "Oct\\u2009\\u2013\\u2009Nov",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "MMMM", "October\\u2009\\u2013\\u2009November",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "hm", "10/10/2007, 10:10\\u202FAM\\u2009\\u2013\\u200911/10/2007, 10:10\\u202FAM",
        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "Hm", "10/10/2007, 10:10\\u2009\\u2013\\u200911/10/2007, 10:10",
        "en", "CE 2007 10 10 20:10:10", "CE 2007 11 10 20:10:10", "Hm", "10/10/2007, 20:10\\u2009\\u2013\\u200911/10/2007, 20:10",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "hmv", "10/10/2007, 10:10\\u202FAM PT\\u2009\\u2013\\u200911/10/2007, 10:10\\u202FAM PT",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "hmz", "10/10/2007, 10:10\\u202FAM PDT\\u2009\\u2013\\u200911/10/2007, 10:10\\u202FAM PST",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "h", "10/10/2007, 10\\u202FAM\\u2009\\u2013\\u200911/10/2007, 10\\u202FAM",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "hv", "10/10/2007, 10\\u202FAM PT\\u2009\\u2013\\u200911/10/2007, 10\\u202FAM PT",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "hz", "10/10/2007, 10\\u202FAM PDT\\u2009\\u2013\\u200911/10/2007, 10\\u202FAM PST",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EEddMMyyyy", "Wed, 10/10/2007\\u2009\\u2013\\u2009Sat, 11/10/2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EddMMy", "Wed, 10/10/2007\\u2009\\u2013\\u2009Sat, 11/10/2007",


        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "hhmmzz", "10/10/2007, 10:10\\u202FAM PDT\\u2009\\u2013\\u200911/10/2007, 10:10\\u202FAM PST",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "hms", "10/10/2007, 10:10:10\\u202FAM\\u2009\\u2013\\u200911/10/2007, 10:10:10\\u202FAM",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "dMMMMMy", "O 10\\u2009\\u2013\\u2009N 10, 2007",

        "en", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EEEEEdM", "W, 10/10\\u2009\\u2013\\u2009S, 11/10",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EEEEdMMMMy", "Saturday, November 10\\u2009\\u2013\\u2009Tuesday, November 20, 2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dMMMMy", "November 10\\u2009\\u2013\\u200920, 2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dMMMM", "November 10\\u2009\\u2013\\u200920",


        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EEEEdMMMM", "Saturday, November 10\\u2009\\u2013\\u2009Tuesday, November 20",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EdMMMy", "Sat, Nov 10\\u2009\\u2013\\u2009Tue, Nov 20, 2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dMMMy", "Nov 10\\u2009\\u2013\\u200920, 2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dMMM", "Nov 10\\u2009\\u2013\\u200920",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "MMMy", "Nov 2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EdMMM", "Sat, Nov 10\\u2009\\u2013\\u2009Tue, Nov 20",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EdMy", "Sat, 11/10/2007\\u2009\\u2013\\u2009Tue, 11/20/2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dMy", "11/10/2007\\u2009\\u2013\\u200911/20/2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dM", "11/10\\u2009\\u2013\\u200911/20",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "My", "11/2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EdM", "Sat, 11/10\\u2009\\u2013\\u2009Tue, 11/20",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "d", "10\\u2009\\u2013\\u200920",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "Ed", "10 Sat\\u2009\\u2013\\u200920 Tue",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "y", "2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "M", "11",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "MMM", "Nov",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "MMMM", "November",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "hm", "11/10/2007, 10:10\\u202FAM\\u2009\\u2013\\u200911/20/2007, 10:10\\u202FAM",
        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "Hm", "11/10/2007, 10:10\\u2009\\u2013\\u200911/20/2007, 10:10",
        "en", "CE 2007 11 10 20:10:10", "CE 2007 11 20 20:10:10", "Hm", "11/10/2007, 20:10\\u2009\\u2013\\u200911/20/2007, 20:10",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "hmv", "11/10/2007, 10:10\\u202FAM PT\\u2009\\u2013\\u200911/20/2007, 10:10\\u202FAM PT",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "hmz", "11/10/2007, 10:10\\u202FAM PST\\u2009\\u2013\\u200911/20/2007, 10:10\\u202FAM PST",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "h", "11/10/2007, 10\\u202FAM\\u2009\\u2013\\u200911/20/2007, 10\\u202FAM",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "hv", "11/10/2007, 10\\u202FAM PT\\u2009\\u2013\\u200911/20/2007, 10\\u202FAM PT",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "hz", "11/10/2007, 10\\u202FAM PST\\u2009\\u2013\\u200911/20/2007, 10\\u202FAM PST",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EEddMMyyyy", "Sat, 11/10/2007\\u2009\\u2013\\u2009Tue, 11/20/2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EddMMy", "Sat, 11/10/2007\\u2009\\u2013\\u2009Tue, 11/20/2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "hhmm", "11/10/2007, 10:10\\u202FAM\\u2009\\u2013\\u200911/20/2007, 10:10\\u202FAM",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "hhmmzz", "11/10/2007, 10:10\\u202FAM PST\\u2009\\u2013\\u200911/20/2007, 10:10\\u202FAM PST",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "hms", "11/10/2007, 10:10:10\\u202FAM\\u2009\\u2013\\u200911/20/2007, 10:10:10\\u202FAM",
        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "Hms", "11/10/2007, 10:10:10\\u2009\\u2013\\u200911/20/2007, 10:10:10",
        "en", "CE 2007 11 10 20:10:10", "CE 2007 11 20 20:10:10", "Hms", "11/10/2007, 20:10:10\\u2009\\u2013\\u200911/20/2007, 20:10:10",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dMMMMMy", "N 10\\u2009\\u2013\\u200920, 2007",

        "en", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EEEEEdM", "S, 11/10\\u2009\\u2013\\u2009T, 11/20",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EEEEdMMMMy", "Wednesday, January 10, 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "dMMMMy", "January 10, 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "dMMMM", "January 10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "MMMMy", "January 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EEEEdMMMM", "Wednesday, January 10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EdMMMy", "Wed, Jan 10, 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "dMMMy", "Jan 10, 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "dMMM", "Jan 10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "MMMy", "Jan 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EdMMM", "Wed, Jan 10",


        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "dMy", "1/10/2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "dM", "1/10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "My", "1/2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EdM", "Wed, 1/10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "d", "10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "Ed", "10 Wed",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "y", "2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "M", "1",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "MMM", "Jan",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "MMMM", "January",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "hm", "10:00\\u202FAM\\u2009\\u2013\\u20092:10\\u202FPM",
        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "Hm", "10:00\\u2009\\u2013\\u200914:10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "hmv", "10:00\\u202FAM\\u2009\\u2013\\u20092:10\\u202FPM PT",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "hmz", "10:00\\u202FAM\\u2009\\u2013\\u20092:10\\u202FPM PST",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "h", "10\\u202FAM\\u2009\\u2013\\u20092\\u202FPM",
        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "H", "10\\u2009\\u2013\\u200914",


        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "hz", "10\\u202FAM\\u2009\\u2013\\u20092\\u202FPM PST",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EEddMMyyyy", "Wed, 01/10/2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EddMMy", "Wed, 01/10/2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "hhmm", "10:00\\u202FAM\\u2009\\u2013\\u20092:10\\u202FPM",
        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "HHmm", "10:00\\u2009\\u2013\\u200914:10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "hhmmzz", "10:00\\u202FAM\\u2009\\u2013\\u20092:10\\u202FPM PST",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "hms", "10:00:10\\u202FAM\\u2009\\u2013\\u20092:10:10\\u202FPM",
        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "Hms", "10:00:10\\u2009\\u2013\\u200914:10:10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "dMMMMMy", "J 10, 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EEEEEdM", "W, 1/10",
        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "dMMMMy", "January 10, 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "dMMMM", "January 10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "MMMMy", "January 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "EEEEdMMMM", "Wednesday, January 10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "EdMMMy", "Wed, Jan 10, 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "dMMMy", "Jan 10, 2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "dMMM", "Jan 10",


        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "EdMMM", "Wed, Jan 10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "EdMy", "Wed, 1/10/2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "dMy", "1/10/2007",


        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "My", "1/2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "EdM", "Wed, 1/10",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "d", "10",


        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "y", "2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "M", "1",



        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hm", "10:00\\u2009\\u2013\\u200910:20\\u202FAM",
        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "Hm", "10:00\\u2009\\u2013\\u200910:20",


        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hmz", "10:00\\u2009\\u2013\\u200910:20\\u202FAM PST",


        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hv", "10\\u202FAM PT",



        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "EddMMy", "Wed, 01/10/2007",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hhmm", "10:00\\u2009\\u2013\\u200910:20\\u202FAM",
        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "HHmm", "10:00\\u2009\\u2013\\u200910:20",

        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hhmmzz", "10:00\\u2009\\u2013\\u200910:20\\u202FAM PST",


        "en", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "dMMMMMy", "J 10, 2007",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "EEEEdMMMMy", "Wednesday, January 10, 2007",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "dMMMMy", "January 10, 2007",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "MMMMy", "January 2007",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "EEEEdMMMM", "Wednesday, January 10",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "dMMMy", "Jan 10, 2007",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "dMMM", "Jan 10",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "EdMMM", "Wed, Jan 10",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "EdMy", "Wed, 1/10/2007",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "dMy", "1/10/2007",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "My", "1/2007",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "EdM", "Wed, 1/10",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "d", "10",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "y", "2007",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "M", "1",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "MMMM", "January",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "hm", "10:10\\u202FAM",
        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "Hm", "10:10",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "hmz", "10:10\\u202FAM PST",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "h", "10\\u202FAM",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "hv", "10\\u202FAM PT",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "EEddMMyyyy", "Wed, 01/10/2007",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "hhmm", "10:10\\u202FAM",
        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "HHmm", "10:10",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "hhmmzz", "10:10\\u202FAM PST",


        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "dMMMMMy", "J 10, 2007",

        "en", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "EEEEEdM", "W, 1/10",

        "zh", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EEEEdMMMMy", "2007\\u5e7410\\u670810\\u65e5\\u661f\\u671f\\u4e09\\u81f32008\\u5e7410\\u670810\\u65e5\\u661f\\u671f\\u4e94",


        "zh", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "dMMMMy", "2007\\u5e7410\\u670810\\u65e5\\u81f311\\u670810\\u65e5",


        "zh", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "MMMMy", "2007\\u5e7410\\u6708\\u81f311\\u6708",


        "zh", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "hmv", "2007/10/10 \\u6D1B\\u6749\\u77F6\\u65F6\\u95F4 \\u4E0A\\u534810:10 \\u2013 2007/11/10 \\u6D1B\\u6749\\u77F6\\u65F6\\u95F4 \\u4E0A\\u534810:10",

        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EEEEdMMMMy", "2007\\u5e7411\\u670810\\u65e5\\u661f\\u671f\\u516d\\u81f320\\u65e5\\u661f\\u671f\\u4e8c",


        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dMMMM", "11\\u670810\\u65e5\\u81f320\\u65e5",

        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "MMMMy", "2007\\u5E7411\\u6708", // (fixed expected result per ticket:6626:)

        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EEEEdMMMM", "11\\u670810\\u65e5\\u661f\\u671f\\u516d\\u81f320\\u65e5\\u661f\\u671f\\u4e8c",


        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EdMy", "2007/11/10\\u5468\\u516d\\u81f32007/11/20\\u5468\\u4e8c",


        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dM", "11/10 \\u2013 11/20",

        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "My", "2007/11",

        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EdM", "11/10\\u5468\\u516d\\u81f311/20\\u5468\\u4e8c",


        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "y", "2007\\u5E74", // (fixed expected result per ticket:6626:)

        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "M", "11\\u6708",

        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "MMM", "11\\u6708", // (fixed expected result per ticket:6626: and others)


        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "hmz", "2007/11/10 GMT-8 \\u4e0a\\u534810:10 \\u2013 2007/11/20 GMT-8 \\u4e0a\\u534810:10",

        "zh", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "h", "2007/11/10 \\u4e0a\\u534810\\u65f6 \\u2013 2007/11/20 \\u4e0a\\u534810\\u65f6",

        "zh", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EEEEdMMMMy", "2007\\u5e741\\u670810\\u65e5\\u661f\\u671f\\u4e09", // (fixed expected result per ticket:6626:)

        "zh", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "hm", "\\u4e0a\\u534810:00\\u81f3\\u4e0b\\u53482:10",


        "zh", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "hmz", "GMT-8\\u4e0a\\u534810:00\\u81f3\\u4e0b\\u53482:10",

        "zh", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "h", "\\u4e0a\\u534810\\u65F6\\u81f3\\u4e0b\\u53482\\u65f6",

        "zh", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "hv", "\\u6D1B\\u6749\\u77F6\\u65F6\\u95F4\\u4E0A\\u534810\\u65F6\\u81F3\\u4E0B\\u53482\\u65F6",

        "zh", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hm", "\\u4e0a\\u534810:00\\u81f310:20",

        "zh", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hmv", "\\u6D1B\\u6749\\u77F6\\u65F6\\u95F4\\u4E0A\\u534810:00\\u81F310:20",

        "zh", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hz", "GMT-8\\u4e0a\\u534810\\u65f6",

        "zh", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "hm", "\\u4e0a\\u534810:10",

        "zh", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "h", "\\u4e0a\\u534810\\u65f6",

        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EEEEdMMMy", "Mittwoch, 10. Okt. 2007\\u2009\\u2013\\u2009Freitag, 10. Okt. 2008",


        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "dMMM", "10. Okt. 2007\\u2009\\u2013\\u200910. Okt. 2008",

        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "MMMy", "Okt. 2007\\u2009\\u2013\\u2009Okt. 2008",


        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EdMy", "Mi., 10.10.2007\\u2009\\u2013\\u2009Fr., 10.10.2008",

        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "dMy", "10.10.2007\\u2009\\u2013\\u200910.10.2008",


        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "My", "10/2007\\u2009\\u2013\\u200910/2008",

        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "EdM", "Mi., 10.10.2007\\u2009\\u2013\\u2009Fr., 10.10.2008",


        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "y", "2007\\u20132008",

        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "M", "10/2007\\u2009\\u2013\\u200910/2008",


        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "hm", "10.10.2007, 10:10\\u202FAM\\u2009\\u2013\\u200910.10.2008, 10:10\\u202FAM",
        "de", "CE 2007 10 10 10:10:10", "CE 2008 10 10 10:10:10", "Hm", "10.10.2007, 10:10\\u2009\\u2013\\u200910.10.2008, 10:10",

        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EEEEdMMMy", "Mittwoch, 10. Okt.\\u2009\\u2013\\u2009Samstag, 10. Nov. 2007",


        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "dMMM", "10. Okt.\\u2009\\u2013\\u200910. Nov.",

        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "MMMy", "Okt.\\u2013Nov. 2007",

        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "EEEEdMMM", "Mittwoch, 10. Okt.\\u2009\\u2013\\u2009Samstag, 10. Nov.",


        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "dM", "10.10.\\u2009\\u2013\\u200910.11.",

        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "My", "10/2007\\u2009\\u2013\\u200911/2007",


        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "d", "10.10.\\u2009\\u2013\\u200910.11.",

        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "y", "2007",


        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "MMM", "Okt.\\u2013Nov.",


        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "hms", "10.10.2007, 10:10:10\\u202FAM\\u2009\\u2013\\u200910.11.2007, 10:10:10\\u202FAM",
        "de", "CE 2007 10 10 10:10:10", "CE 2007 11 10 10:10:10", "Hms", "10.10.2007, 10:10:10\\u2009\\u2013\\u200910.11.2007, 10:10:10",

        "de", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EEEEdMMMy", "Samstag, 10.\\u2009\\u2013\\u2009Dienstag, 20. Nov. 2007",

        "de", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dMMMy", "10.\\u201320. Nov. 2007",


        "de", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "MMMy", "Nov. 2007",

        "de", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EEEEdMMM", "Samstag, 10.\\u2009\\u2013\\u2009Dienstag, 20. Nov.",

        "de", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "EdMy", "Sa., 10.\\u2009\\u2013\\u2009Di., 20.11.2007",


        "de", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "dM", "10.\\u201320.11.",

        "de", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "My", "11/2007",


        "de", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "d", "10.\\u201320.",

        "de", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "y", "2007",


        "de", "CE 2007 11 10 10:10:10", "CE 2007 11 20 10:10:10", "hmv", "10.11.2007, 10:10\\u202FAM Los Angeles (Ortszeit)\\u2009\\u2013\\u200920.11.2007, 10:10\\u202FAM Los Angeles (Ortszeit)",

        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EEEEdMMMy", "Mittwoch, 10. Jan. 2007",


        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "dMMM", "10. Jan.",

        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "MMMy", "Jan. 2007",

        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "EEEEdMMM", "Mittwoch, 10. Jan.",

        /* Following is an important test, because the 'h' in 'Uhr' is interpreted as a pattern
           if not escaped properly. */
        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "h", "10 Uhr AM\\u2009\\u2013\\u20092 Uhr PM",
        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 14:10:10", "H", "10\\u201314 Uhr",

        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "EEEEdMMM", "Mittwoch, 10. Jan.",


        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hmv", "10:00\\u201310:20\\u202FAM Los Angeles (Ortszeit)",

        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hmz", "10:00\\u201310:20\\u202FAM GMT-8",

        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "h", "10 Uhr AM",
        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "H", "10 Uhr",


        "de", "CE 2007 01 10 10:00:10", "CE 2007 01 10 10:20:10", "hz", "10 Uhr AM GMT-8",

        "de", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "EEEEdMMMy", "Mittwoch, 10. Jan. 2007",


        "de", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "hmv", "10:10\\u202FAM Los Angeles (Ortszeit)",

        "de", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "hmz", "10:10\\u202FAM GMT-8",


        "de", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "hv", "10 Uhr AM Los Angeles (Ortszeit)",

        "de", "CE 2007 01 10 10:10:10", "CE 2007 01 10 10:10:20", "hz", "10 Uhr AM GMT-8",

        // Thai (default calendar buddhist)

        "th", "BE 2550 10 10 10:10:10", "BE 2551 10 10 10:10:10", "EEEEdMMMy", "\\u0E27\\u0E31\\u0E19\\u0E1E\\u0E38\\u0E18\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. 2550 \\u2013 \\u0E27\\u0E31\\u0E19\\u0E28\\u0E38\\u0E01\\u0E23\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. 2551",


        "th", "BE 2550 10 10 10:10:10", "BE 2551 10 10 10:10:10", "dMMM", "10 \\u0E15.\\u0E04. 2550 \\u2013 10 \\u0E15.\\u0E04. 2551",

        "th", "BE 2550 10 10 10:10:10", "BE 2551 10 10 10:10:10", "MMMy", "\\u0E15.\\u0E04. 2550 \\u2013 \\u0E15.\\u0E04. 2551",


        "th", "BE 2550 10 10 10:10:10", "BE 2551 10 10 10:10:10", "EdMy", "\\u0E1E. 10/10/2550 \\u2013 \\u0E28. 10/10/2551",

        "th", "BE 2550 10 10 10:10:10", "BE 2551 10 10 10:10:10", "dMy", "10/10/2550 \\u2013 10/10/2551",


        "th", "BE 2550 10 10 10:10:10", "BE 2551 10 10 10:10:10", "My", "10/2550 \\u2013 10/2551",

        "th", "BE 2550 10 10 10:10:10", "BE 2551 10 10 10:10:10", "EdM", "\\u0E1E. 10/10/2550 \\u2013 \\u0E28. 10/10/2551",


        "th", "BE 2550 10 10 10:10:10", "BE 2551 10 10 10:10:10", "y", "2550\\u20132551",

        "th", "BE 2550 10 10 10:10:10", "BE 2551 10 10 10:10:10", "M", "10/2550 \\u2013 10/2551",


        "th", "BE 2550 10 10 10:10:10", "BE 2550 11 10 10:10:10", "EEEEdMMMy", "\\u0E27\\u0E31\\u0E19\\u0E1E\\u0E38\\u0E18\\u0E17\\u0E35\\u0E48 10 \\u0E15.\\u0E04. \\u2013 \\u0E27\\u0E31\\u0E19\\u0E40\\u0E2A\\u0E32\\u0E23\\u0E4C\\u0E17\\u0E35\\u0E48 10 \\u0E1E.\\u0E22. 2550",


        "th", "BE 2550 10 10 10:10:10", "BE 2550 11 10 10:10:10", "dMMM", "10 \\u0E15.\\u0E04. \\u2013 10 \\u0E1E.\\u0E22.",

        "th", "BE 2550 10 10 10:10:10", "BE 2550 11 10 10:10:10", "MMMy", "\\u0E15.\\u0E04.\\u2013\\u0E1E.\\u0E22. 2550",

        "th", "2550 10 10 10:10:10", "2550 11 10 10:10:10", "dM", "10/10 \\u2013 10/11",

        "th", "BE 2550 10 10 10:10:10", "BE 2550 11 10 10:10:10", "My", "10/2550 \\u2013 11/2550",


        "th", "BE 2550 10 10 10:10:10", "BE 2550 11 10 10:10:10", "d", "10/10 \\u2013 10/11",

        "th", "BE 2550 10 10 10:10:10", "BE 2550 11 10 10:10:10", "y", "\\u0E1E.\\u0E28. 2550",


        "th", "BE 2550 10 10 10:10:10", "BE 2550 11 10 10:10:10", "MMM", "\\u0E15.\\u0E04.\\u2013\\u0E1E.\\u0E22.",

        // Tests for Japanese calendar with eras, including new era in 2019 (Heisei 31 through April 30, then new era)

        "en-u-ca-japanese", "H 31 03 15 09:00:00", "H 31 04 15 09:00:00", "GyMMMd", "Mar 15\\u2009\\u2013\\u2009Apr 15, 31 Heisei",

        "en-u-ca-japanese", "H 31 03 15 09:00:00", "H 31 04 15 09:00:00", "GGGGGyMd", "3/15/31\\u2009\\u2013\\u20094/15/31 H",

        "en-u-ca-japanese", "S 64 01 05 09:00:00", "H 1 01 15 09:00:00",  "GyMMMd", "Jan 5, 64 Sh\\u014Dwa\\u2009\\u2013\\u2009Jan 15, 1 Heisei",

        "en-u-ca-japanese", "S 64 01 05 09:00:00", "H 1 01 15 09:00:00",  "GGGGGyMd", "1/5/64 S\\u2009\\u2013\\u20091/15/1 H",
 
        "en-u-ca-japanese", "H 31 04 15 09:00:00", JP_ERA_2019_NARROW " 1 05 15 09:00:00",  "GyMMMd", "Apr 15, 31 Heisei\\u2009\\u2013\\u2009May 15, 1 " JP_ERA_2019_ROOT,

        "en-u-ca-japanese", "H 31 04 15 09:00:00", JP_ERA_2019_NARROW " 1 05 15 09:00:00",  "GGGGGyMd", "4/15/31 H\\u2009\\u2013\\u20095/15/1 " JP_ERA_2019_NARROW,
 
 
        "ja-u-ca-japanese", "H 31 03 15 09:00:00", "H 31 04 15 09:00:00", "GyMMMd", "\\u5E73\\u621031\\u5E743\\u670815\\u65E5\\uFF5E4\\u670815\\u65E5",

        "ja-u-ca-japanese", "H 31 03 15 09:00:00", "H 31 04 15 09:00:00", "GGGGGyMd", "H31/03/15\\uFF5E31/04/15",

        "ja-u-ca-japanese", "S 64 01 05 09:00:00", "H 1 01 15 09:00:00",  "GyMMMd", "\\u662D\\u548C64\\u5E741\\u67085\\u65E5\\uFF5E\\u5E73\\u6210\\u5143\\u5E741\\u670815\\u65E5",

        "ja-u-ca-japanese", "S 64 01 05 09:00:00", "H 1 01 15 09:00:00",  "GGGGGyMd", "S64/01/05\\uFF5EH1/01/15",

        "ja-u-ca-japanese", "H 31 04 15 09:00:00", JP_ERA_2019_NARROW " 1 05 15 09:00:00", "GGGGGyMd", "H31/04/15\\uFF5E" JP_ERA_2019_NARROW "1/05/15",

    };
    expect(DATA, UPRV_LENGTHOF(DATA));
}


/**
 * Test handling of hour and day period metacharacters
 */
void DateIntervalFormatTest::testHourMetacharacters() {
    // first item is date pattern
    // followed by a group of locale/from_data/to_data/skeleton/interval_data
    // Note that from_data/to_data are specified using era names from root, for the calendar specified by locale.
    const char* DATA[] = {
        "GGGGG y MM dd HH:mm:ss", // pattern for from_data/to_data
        
        // This test is for tickets ICU-21154, ICU-21155, and ICU-21156 and is intended to verify
        // that all of the special skeleton characters for hours and day periods work as expected
        // with date intervals:
        // - If a, b, or B is included in the skeleton, it correctly sets the length of the day-period field
        // - If k or K is included, it behaves the same as H or h, except for the difference in the actual
        //   number used for the hour.
        // - If j is included, it behaves the same as either h or H as appropriate, and multiple j's have the
        //   intended effect on the length of the day period field (if there is one)
        // - If J is included, it correctly suppresses the day period field if j would include it
        // - If C is included, it behaves the same as j and brings up the correct day period field
        // - In all cases, if the day period of both ends of the range is the same, you only see it once

        // baseline (h and H)
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "hh", "12\\u2009\\u2013\\u20091\\u202FAM",
        "de", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "HH", "00\\u201301 Uhr",
        
        // k and K (ICU-21154 and ICU-21156)
        // (should behave the same as h and H if not overridden in locale ID)
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "KK", "12\\u2009\\u2013\\u20091\\u202FAM",
        "de", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "kk", "00\\u201301 Uhr",
        // (overriding hour cycle in locale ID should affect both h and K [or both H and k])
        "en-u-hc-h11", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "hh", "0\\u2009\\u2013\\u20091\\u202FAM",
        "en-u-hc-h11", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "KK", "0\\u2009\\u2013\\u20091\\u202FAM",
        "de-u-hc-h24", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "HH", "24\\u201301 Uhr",
        "de-u-hc-h24", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "kk", "24\\u201301 Uhr",
        // (overriding hour cycle to h11 should NOT affect H and k; overriding to h24 should NOT affect h and K)
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "HH", "00\\u2009\\u2013\\u200901",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "kk", "00\\u2009\\u2013\\u200901",
        "en-u-hc-h11", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "HH", "00\\u2009\\u2013\\u200901",
        "en-u-hc-h11", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "kk", "00\\u2009\\u2013\\u200901",
        "de", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "hh", "12\\u2009\\u2013\\u20091 Uhr AM",
        "de", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "KK", "12\\u2009\\u2013\\u20091 Uhr AM",
        "de-u-hc-h24", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "hh", "12\\u2009\\u2013\\u20091 Uhr AM",
        "de-u-hc-h24", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "KK", "12\\u2009\\u2013\\u20091 Uhr AM",

        // different lengths of the 'a' field
        "en", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "ha", "10\\u202FAM\\u2009\\u2013\\u20091\\u202FPM",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "ha", "12\\u2009\\u2013\\u20091\\u202FAM",
        "en", "CE 2010 09 27 10:00:00", "CE 2010 09 27 12:00:00", "haaaaa", "10\\u202Fa\\u2009\\u2013\\u200912\\u202Fp",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "haaaaa", "12\\u2009\\u2013\\u20091\\u202Fa",
        
        // j (ICU-21155)
        "en", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "jj", "10\\u202FAM\\u2009\\u2013\\u20091\\u202FPM",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "jj", "12\\u2009\\u2013\\u20091\\u202FAM",
        "en", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "jjjjj", "10\\u202Fa\\u2009\\u2013\\u20091\\u202Fp",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "jjjjj", "12\\u2009\\u2013\\u20091\\u202Fa",
        "de", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "jj", "10\\u201313 Uhr",
        "de", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "jj", "00\\u201301 Uhr",
        "de", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "jjjjj", "10\\u201313 Uhr",
        "de", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "jjjjj", "00\\u201301 Uhr",
        
        // b and B
        "en", "CE 2010 09 27 10:00:00", "CE 2010 09 27 12:00:00", "hb", "10\\u202FAM\\u2009\\u2013\\u200912\\u202Fnoon",
        "en", "CE 2010 09 27 10:00:00", "CE 2010 09 27 12:00:00", "hbbbbb", "10\\u202Fa\\u2009\\u2013\\u200912\\u202Fn",
        "en", "CE 2010 09 27 13:00:00", "CE 2010 09 27 14:00:00", "hb", "1\\u2009\\u2013\\u20092\\u202FPM",
        "en", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "hB", "10 in the morning\\u2009\\u2013\\u20091 in the afternoon",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "hB", "12\\u2009\\u2013\\u20091 at night",
        
        // J
        "en", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "J", "10\\u2009\\u2013\\u20091",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "J", "12\\u2009\\u2013\\u20091",
        "de", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "J", "10\\u201313 Uhr",
        "de", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "J", "00\\u201301 Uhr",
        
        // C
        // (for English and German, C should do the same thing as j)
        "en", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "CC", "10\\u202FAM\\u2009\\u2013\\u20091\\u202FPM",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "CC", "12\\u2009\\u2013\\u20091\\u202FAM",
        "en", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "CCCCC", "10\\u202Fa\\u2009\\u2013\\u20091\\u202Fp",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "CCCCC", "12\\u2009\\u2013\\u20091\\u202Fa",
        "de", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "CC", "10\\u201313 Uhr",
        "de", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "CC", "00\\u201301 Uhr",
        "de", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "CCCCC", "10\\u201313 Uhr",
        "de", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "CCCCC", "00\\u201301 Uhr",
        // (for zh_HK and hi_IN, j maps to ha, but C maps to hB)
        "zh_HK", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "jj", "\\u4E0A\\u534810\\u6642\\u81F3\\u4E0B\\u53481\\u6642",
        "zh_HK", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "jj", "\\u4E0A\\u534812\\u6642\\u81F31\\u6642",
        "zh_HK", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "hB", "\\u4E0A\\u534810\\u6642 \\u2013 \\u4E0B\\u53481\\u6642",
        "zh_HK", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "hB", "\\u51CC\\u666812\\u20131\\u6642",
        "zh_HK", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "CC", "\\u4E0A\\u534810\\u6642\\u81F3\\u4E0B\\u53481\\u6642",
        "zh_HK", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "CC", "\\u4E0A\\u534812\\u6642\\u81F31\\u6642",
        "hi_IN", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "jj", "10 am \\u2013 1 pm",
        "hi_IN", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "jj", "12\\u20131 am",
        "hi_IN", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "hB", "\\u0938\\u0941\\u092C\\u0939 10 \\u2013 \\u0926\\u094B\\u092A\\u0939\\u0930 1",
        "hi_IN", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "hB", "\\u0930\\u093E\\u0924 12\\u20131",
        "hi_IN", "CE 2010 09 27 10:00:00", "CE 2010 09 27 13:00:00", "CC", "\\u0938\\u0941\\u092C\\u0939 10 \\u2013 \\u0926\\u094B\\u092A\\u0939\\u0930 1",
        "hi_IN", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "CC", "\\u0930\\u093E\\u0924 12\\u20131",

        // regression test for ICU-21342
        "en-gb-u-hc-h24", "CE 2010 09 27 00:00:00", "CE 2010 09 27 10:00:00", "kk", "24\\u201310",
        "en-gb-u-hc-h24", "CE 2010 09 27 00:00:00", "CE 2010 09 27 11:00:00", "kk", "24\\u201311",
        "en-gb-u-hc-h24", "CE 2010 09 27 00:00:00", "CE 2010 09 27 12:00:00", "kk", "24\\u201312",
        "en-gb-u-hc-h24", "CE 2010 09 27 00:00:00", "CE 2010 09 27 13:00:00", "kk", "24\\u201313",

        // regression test for ICU-21343
        "de", "CE 2010 09 27 01:00:00", "CE 2010 09 27 10:00:00", "KK", "1\\u2009\\u2013\\u200910 Uhr AM",
        
        // regression test for ICU-21154 (single-date ranges should use the same hour cycle as multi-date ranges)
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 00:00:00", "hh", "12\\u202FAM",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "hh", "12\\u2009\\u2013\\u20091\\u202FAM",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 00:00:00", "KK", "12\\u202FAM",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "KK", "12\\u2009\\u2013\\u20091\\u202FAM", // (this was producing "0 - 1\\u202FAM" before)
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 00:00:00", "jj", "12\\u202FAM",
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "jj", "12\\u2009\\u2013\\u20091\\u202FAM",
        
        // regression test for ICU-21984 (multiple day-period characters in date-interval patterns)
        "en", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "MMMdhhmma", "Sep 27, 12:00\\u2009\\u2013\\u20091:00\\u202FAM",
        "sq", "CE 2010 09 27 00:00:00", "CE 2010 09 27 01:00:00", "Bhm", "12:00\\u2009\\u2013\\u20091:00 e nat\\u00EBs",
    };
    expect(DATA, UPRV_LENGTHOF(DATA));
}


void DateIntervalFormatTest::expect(const char** data, int32_t data_length) {
    int32_t i = 0;
    UErrorCode ec = U_ZERO_ERROR;
    UnicodeString str, str2;
    const char* pattern = data[i++];

    while (i<data_length) {
        const char* locName = data[i++];
        const char* datestr = data[i++];
        const char* datestr_2 = data[i++];

        Locale loc(locName);
        LocalPointer<Calendar> defCal(Calendar::createInstance(loc, ec));
        if (U_FAILURE(ec)) {
            dataerrln("Calendar::createInstance fails for loc %s with: %s", locName, u_errorName(ec));
            return;
        }
        const char* calType = defCal->getType();
 
        Locale refLoc("root");
        if (calType) {
            refLoc.setKeywordValue("calendar", calType, ec);
        }
        SimpleDateFormat ref(pattern, refLoc, ec);
        logln( "case %d, locale: %s\n", (i-1)/5, locName);
        if (U_FAILURE(ec)) {
            dataerrln("contruct SimpleDateFormat in expect failed: %s", u_errorName(ec));
            return;
        }

        // 'f'
        logln("original date: %s - %s\n", datestr, datestr_2);
        UDate date = ref.parse(ctou(datestr), ec);
        if (!assertSuccess("parse 1st data in expect", ec)) return;
        UDate date_2 = ref.parse(ctou(datestr_2), ec);
        if (!assertSuccess("parse 2nd data in expect", ec)) return;
        DateInterval dtitv(date, date_2);

        const UnicodeString& oneSkeleton(ctou(data[i++]));

        DateIntervalFormat* dtitvfmt = DateIntervalFormat::createInstance(oneSkeleton, loc, ec);
        if (!assertSuccess("createInstance(skeleton) in expect", ec)) return;
        FieldPosition pos(FieldPosition::DONT_CARE);
        dtitvfmt->format(&dtitv, str.remove(), pos, ec);
        if (!assertSuccess("format in expect", ec)) return;
        assertEquals((UnicodeString)"\"" + locName + "\\" + oneSkeleton + "\\" + ctou(datestr) + "\\" + ctou(datestr_2) + "\"", ctou(data[i++]), str);

        logln("interval date:" + str + "\"" + locName + "\", "
                 + "\"" + datestr + "\", "
              + "\"" + datestr_2 + "\", " + oneSkeleton);
        delete dtitvfmt;
    }
}


/*
 * Test format using user defined DateIntervalInfo
 */
void DateIntervalFormatTest::testFormatUserDII() {
    // first item is date pattern
    const char* DATA[] = {
        "yyyy MM dd HH:mm:ss",
        "en", "2007 10 10 10:10:10", "2008 10 10 10:10:10", "Oct 10, 2007 --- Oct 10, 2008",

        "en", "2007 10 10 10:10:10", "2007 11 10 10:10:10", "2007 Oct 10 - Nov 2007",

        "en", "2007 11 10 10:10:10", "2007 11 20 10:10:10", "Nov 10, 2007 --- Nov 20, 2007",

        "en", "2007 01 10 10:00:10", "2007 01 10 14:10:10", "Jan 10, 2007",

        "en", "2007 01 10 10:00:10", "2007 01 10 10:20:10", "Jan 10, 2007",

        "en", "2007 01 10 10:10:10", "2007 01 10 10:10:20", "Jan 10, 2007",

        "zh", "2007 10 10 10:10:10", "2008 10 10 10:10:10", "2007\\u5e7410\\u670810\\u65e5 --- 2008\\u5e7410\\u670810\\u65e5",

        "zh", "2007 10 10 10:10:10", "2007 11 10 10:10:10", "2007 10\\u6708 10 - 11\\u6708 2007",

        "zh", "2007 11 10 10:10:10", "2007 11 20 10:10:10", "2007\\u5e7411\\u670810\\u65e5 --- 2007\\u5e7411\\u670820\\u65e5",

        "zh", "2007 01 10 10:00:10", "2007 01 10 14:10:10", "2007\\u5e741\\u670810\\u65e5", // (fixed expected result per ticket:6626:)

        "zh", "2007 01 10 10:00:10", "2007 01 10 10:20:10", "2007\\u5e741\\u670810\\u65e5", // (fixed expected result per ticket:6626:)

        "zh", "2007 01 10 10:10:10", "2007 01 10 10:10:20", "2007\\u5e741\\u670810\\u65e5", // (fixed expected result per ticket:6626:)

        "de", "2007 10 10 10:10:10", "2008 10 10 10:10:10", "10. Okt. 2007 --- 10. Okt. 2008",


        "de", "2007 11 10 10:10:10", "2007 11 20 10:10:10", "10. Nov. 2007 --- 20. Nov. 2007",

        "de", "2007 01 10 10:00:10", "2007 01 10 14:10:10", "10. Jan. 2007",

        "de", "2007 01 10 10:00:10", "2007 01 10 10:20:10", "10. Jan. 2007",


        "es", "2007 10 10 10:10:10", "2008 10 10 10:10:10", "10 oct 2007 --- 10 oct 2008",

        "es", "2007 10 10 10:10:10", "2007 11 10 10:10:10", "2007 oct 10 - nov 2007",

        "es", "2007 11 10 10:10:10", "2007 11 20 10:10:10", "10 nov 2007 --- 20 nov 2007",

        "es", "2007 01 10 10:00:10", "2007 01 10 14:10:10", "10 ene 2007",

        "es", "2007 01 10 10:00:10", "2007 01 10 10:20:10", "10 ene 2007",

        "es", "2007 01 10 10:10:10", "2007 01 10 10:10:20", "10 ene 2007",
    };
    expectUserDII(DATA, UPRV_LENGTHOF(DATA));
}

/*
 * Test format using UDisplayContext
 */
#define CAP_NONE  UDISPCTX_CAPITALIZATION_NONE
#define CAP_BEGIN UDISPCTX_CAPITALIZATION_FOR_BEGINNING_OF_SENTENCE
#define CAP_LIST  UDISPCTX_CAPITALIZATION_FOR_UI_LIST_OR_MENU
#define CAP_ALONE UDISPCTX_CAPITALIZATION_FOR_STANDALONE
#define _DAY    (24.0*60.0*60.0*1000.0)

void DateIntervalFormatTest::testContext() {
    static const UDate startDate = 1285599629000.0; // 2010-Sep-27 0800 in America/Los_Angeles
    typedef struct {
        const char * locale;
        const char * skeleton;
        UDisplayContext context;
        const UDate  deltaDate;
        const char16_t* expectResult;
    } DateIntervalContextItem;
    static const DateIntervalContextItem testItems[] = {
        { "cs",    "MMMEd",    CAP_NONE,  60.0*_DAY,  u"po 27. 9.\u2009–\u2009pá 26. 11." },
        { "cs",    "yMMMM",    CAP_NONE,  60.0*_DAY,  u"září–listopad 2010" },
        { "cs",    "yMMMM",    CAP_NONE,  1.0*_DAY,   u"září 2010" },
#if !UCONFIG_NO_BREAK_ITERATION
        { "cs",    "MMMEd",    CAP_BEGIN, 60.0*_DAY,  u"Po 27. 9.\u2009–\u2009pá 26. 11." },
        { "cs",    "yMMMM",    CAP_BEGIN, 60.0*_DAY,  u"Září–listopad 2010" },
        { "cs",    "yMMMM",    CAP_BEGIN, 1.0*_DAY,   u"Září 2010" },
        { "cs",    "MMMEd",    CAP_LIST,  60.0*_DAY,  u"Po 27. 9.\u2009–\u2009pá 26. 11." },
        { "cs",    "yMMMM",    CAP_LIST,  60.0*_DAY,  u"Září–listopad 2010" },
        { "cs",    "yMMMM",    CAP_LIST,  1.0*_DAY,   u"Září 2010" },
#endif
        { "cs",    "MMMEd",    CAP_ALONE, 60.0*_DAY,  u"po 27. 9.\u2009–\u2009pá 26. 11." },
        { "cs",    "yMMMM",    CAP_ALONE, 60.0*_DAY,  u"září–listopad 2010" },
        { "cs",    "yMMMM",    CAP_ALONE, 1.0*_DAY,   u"září 2010" },
        { nullptr, nullptr,    CAP_NONE,  0,          nullptr }
    };
    const DateIntervalContextItem* testItemPtr;
    for ( testItemPtr = testItems; testItemPtr->locale != nullptr; ++testItemPtr ) {
        UErrorCode status = U_ZERO_ERROR;
        Locale locale(testItemPtr->locale);
        UnicodeString skeleton(testItemPtr->skeleton, -1, US_INV);
        LocalPointer<DateIntervalFormat> fmt(DateIntervalFormat::createInstance(skeleton, locale, status));
        if (U_FAILURE(status)) {
            errln("createInstance failed for locale %s skeleton %s: %s",
                    testItemPtr->locale, testItemPtr->skeleton, u_errorName(status));
            continue;
        }
        fmt->adoptTimeZone(TimeZone::createTimeZone("America/Los_Angeles"));

        fmt->setContext(testItemPtr->context, status);
        if (U_FAILURE(status)) {
            errln("setContext failed for locale %s skeleton %s context %04X: %s",
                    testItemPtr->locale, testItemPtr->skeleton, (unsigned)testItemPtr->context, u_errorName(status));
        } else {
            UDisplayContext getContext = fmt->getContext(UDISPCTX_TYPE_CAPITALIZATION, status);
            if (U_FAILURE(status)) {
                errln("getContext failed for locale %s skeleton %s context %04X: %s",
                        testItemPtr->locale, testItemPtr->skeleton, (unsigned)testItemPtr->context, u_errorName(status));
            } else if (getContext != testItemPtr->context) {
                errln("getContext failed for locale %s skeleton %s context %04X: got context %04X",
                        testItemPtr->locale, testItemPtr->skeleton, (unsigned)testItemPtr->context, (unsigned)getContext);
            }
        }

        status = U_ZERO_ERROR;
        DateInterval interval(startDate, startDate + testItemPtr->deltaDate);
        UnicodeString getResult;
        FieldPosition pos(FieldPosition::DONT_CARE);
        fmt->format(&interval, getResult, pos, status);
        if (U_FAILURE(status)) {
            errln("format failed for locale %s skeleton %s context %04X: %s",
                    testItemPtr->locale, testItemPtr->skeleton, (unsigned)testItemPtr->context, u_errorName(status));
            continue;
        }
        UnicodeString expectResult(true, testItemPtr->expectResult, -1);
        if (getResult != expectResult) {
            errln(UnicodeString("format expected ") + expectResult + UnicodeString(" but got ") + getResult);
        }
    }
}

void DateIntervalFormatTest::testSetIntervalPatternNoSideEffect() {
    UErrorCode ec = U_ZERO_ERROR;
    LocalPointer<DateIntervalInfo> dtitvinf(new DateIntervalInfo(ec), ec);
    if (U_FAILURE(ec)) {
        errln("Failure encountered: %s", u_errorName(ec));
        return;
    }
    UnicodeString expected;
    dtitvinf->getIntervalPattern(ctou("yMd"), UCAL_DATE, expected, ec);
    dtitvinf->setIntervalPattern(ctou("yMd"), UCAL_DATE, ctou("M/d/y\\u2009\\u2013\\u2009d"), ec);
    if (U_FAILURE(ec)) {
        errln("Failure encountered: %s", u_errorName(ec));
        return;
    }
    dtitvinf.adoptInsteadAndCheckErrorCode(new DateIntervalInfo(ec), ec);
    if (U_FAILURE(ec)) {
        errln("Failure encountered: %s", u_errorName(ec));
        return;
    }
    UnicodeString actual;
    dtitvinf->getIntervalPattern(ctou("yMd"), UCAL_DATE, actual, ec);
    if (U_FAILURE(ec)) {
        errln("Failure encountered: %s", u_errorName(ec));
        return;
    }
    if (expected != actual) {
        errln("DateIntervalInfo.setIntervalPattern should have no side effects.");
    }
}

void DateIntervalFormatTest::testYearFormats() {
    const Locale &enLocale = Locale::getEnglish();
    UErrorCode status = U_ZERO_ERROR;
    LocalPointer<Calendar> fromTime(Calendar::createInstance(enLocale, status));
    LocalPointer<Calendar> toTime(Calendar::createInstance(enLocale, status));
    if (U_FAILURE(status)) {
        errln("Failure encountered: %s", u_errorName(status));
        return;
    }
    // April 26, 113. Three digit year so that we can test 2 digit years;
    // 4 digit years with padded 0's and full years.
    fromTime->set(113, 3, 26);
    // April 28, 113.
    toTime->set(113, 3, 28);
    {
        LocalPointer<DateIntervalFormat> dif(DateIntervalFormat::createInstance("yyyyMd", enLocale, status));
        if (U_FAILURE(status)) {
            dataerrln("Failure encountered: %s", u_errorName(status));
            return;
        }
        UnicodeString actual;
        UnicodeString expected(ctou("4/26/0113\\u2009\\u2013\\u20094/28/0113"));
        FieldPosition pos;
        dif->format(*fromTime, *toTime, actual, pos, status);
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        if (actual != expected) {
            errln("Expected " + expected + ", got: " + actual);
        }
    }
    {
        LocalPointer<DateIntervalFormat> dif(DateIntervalFormat::createInstance("yyMd", enLocale, status));
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        UnicodeString actual;
        UnicodeString expected(ctou("4/26/13\\u2009\\u2013\\u20094/28/13"));
        FieldPosition pos(FieldPosition::DONT_CARE);
        dif->format(*fromTime, *toTime, actual, pos, status);
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        if (actual != expected) {
            errln("Expected " + expected + ", got: " + actual);
        }
    }
    {
        LocalPointer<DateIntervalFormat> dif(DateIntervalFormat::createInstance("yMd", enLocale, status));
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        UnicodeString actual;
        UnicodeString expected(ctou("4/26/113\\u2009\\u2013\\u20094/28/113"));
        FieldPosition pos(FieldPosition::DONT_CARE);
        dif->format(*fromTime, *toTime, actual, pos, status);
        if (U_FAILURE(status)) {
            errln("Failure encountered: %s", u_errorName(status));
            return;
        }
        if (actual != expected) {
            errln("Expected " + expected + ", got: " + actual);
        }
    }
}

void DateIntervalFormatTest::expectUserDII(const char** data,
                                           int32_t data_length) {
    int32_t i = 0;
    UnicodeString str;
    UErrorCode ec = U_ZERO_ERROR;
    const char* pattern = data[0];
    i++;

    while ( i < data_length ) {
        const char* locName = data[i++];
        Locale loc(locName);
        SimpleDateFormat ref(pattern, loc, ec);
        if (U_FAILURE(ec)) {
            dataerrln("contruct SimpleDateFormat in expectUserDII failed: %s", u_errorName(ec));
            return;
        }
        const char* datestr = data[i++];
        const char* datestr_2 = data[i++];
        UDate date = ref.parse(ctou(datestr), ec);
        if (!assertSuccess("parse in expectUserDII", ec)) return;
        UDate date_2 = ref.parse(ctou(datestr_2), ec);
        if (!assertSuccess("parse in expectUserDII", ec)) return;
        DateInterval dtitv(date, date_2);

        ec = U_ZERO_ERROR;
        // test user created DateIntervalInfo
        DateIntervalInfo* dtitvinf = new DateIntervalInfo(ec);
        dtitvinf->setFallbackIntervalPattern("{0} --- {1}", ec);
        dtitvinf->setIntervalPattern(UDAT_YEAR_ABBR_MONTH_DAY, UCAL_MONTH, "yyyy MMM d - MMM y",ec);
        if (!assertSuccess("DateIntervalInfo::setIntervalPattern", ec)) return;
        dtitvinf->setIntervalPattern(UDAT_YEAR_ABBR_MONTH_DAY, UCAL_HOUR_OF_DAY, "yyyy MMM d HH:mm - HH:mm", ec);
        if (!assertSuccess("DateIntervalInfo::setIntervalPattern", ec)) return;
        DateIntervalFormat* dtitvfmt = DateIntervalFormat::createInstance(UDAT_YEAR_ABBR_MONTH_DAY, loc, *dtitvinf, ec);
        delete dtitvinf;
        if (!assertSuccess("createInstance(skeleton,dtitvinf) in expectUserDII", ec)) return;
        FieldPosition pos(FieldPosition::DONT_CARE);
        dtitvfmt->format(&dtitv, str.remove(), pos, ec);
        if (!assertSuccess("format in expectUserDII", ec)) return;
        assertEquals((UnicodeString)"\"" + locName + "\\" + datestr + "\\" + datestr_2 + "\"", ctou(data[i++]), str);
#ifdef DTIFMTTS_DEBUG
        char result[1000];
        char mesg[1000];
        PRINTMESG("interval format using user defined DateIntervalInfo\n");
        str.extract(0,  str.length(), result, "UTF-8");
        snprintf(mesg, sizeof(mesg), "interval date: %s\n", result);
        PRINTMESG(mesg);
#endif
        delete dtitvfmt;
    }
}


void DateIntervalFormatTest::testStress() {
    if(quick){
    	logln("Quick mode: Skipping test");
    	return;
    }
	const char* DATA[] = {
        "yyyy MM dd HH:mm:ss",
        "2007 10 10 10:10:10", "2008 10 10 10:10:10",
        "2007 10 10 10:10:10", "2007 11 10 10:10:10",
        "2007 11 10 10:10:10", "2007 11 20 10:10:10",
        "2007 01 10 10:00:10", "2007 01 10 14:10:10",
        "2007 01 10 10:00:10", "2007 01 10 10:20:10",
        "2007 01 10 10:10:10", "2007 01 10 10:10:20",
    };

    const char* testLocale[][3] = {
        //{"th", "", ""},
        {"en", "", ""},
        {"zh", "", ""},
        {"de", "", ""},
        {"ar", "", ""},
        {"en", "GB",  ""},
        {"fr", "", ""},
        {"it", "", ""},
        {"nl", "", ""},
        {"zh", "TW",  ""},
        {"ja", "", ""},
        {"pt", "BR", ""},
        {"ru", "", ""},
        {"pl", "", ""},
        {"tr", "", ""},
        {"es", "", ""},
        {"ko", "", ""},
        {"sv", "", ""},
        {"fi", "", ""},
        {"da", "", ""},
        {"pt", "PT", ""},
        {"ro", "", ""},
        {"hu", "", ""},
        {"he", "", ""},
        {"in", "", ""},
        {"cs", "", ""},
        {"el", "", ""},
        {"no", "", ""},
        {"vi", "", ""},
        {"bg", "", ""},
        {"hr", "", ""},
        {"lt", "", ""},
        {"sk", "", ""},
        {"sl", "", ""},
        {"sr", "", ""},
        {"ca", "", ""},
        {"lv", "", ""},
        {"uk", "", ""},
        {"hi", "", ""},
    };

    uint32_t localeIndex;
    for ( localeIndex = 0; localeIndex < UPRV_LENGTHOF(testLocale); ++localeIndex ) {
        char locName[32];
        uprv_strcpy(locName, testLocale[localeIndex][0]);
        uprv_strcat(locName, testLocale[localeIndex][1]);
        stress(DATA, UPRV_LENGTHOF(DATA), Locale(testLocale[localeIndex][0], testLocale[localeIndex][1], testLocale[localeIndex][2]), locName);
    }
}


void DateIntervalFormatTest::stress(const char** data, int32_t data_length,
                                    const Locale& loc, const char* locName) {
    UnicodeString skeleton[] = {
        "EEEEdMMMMy",
        "dMMMMy",
        "dMMMM",
        "MMMMy",
        "EEEEdMMMM",
        "EdMMMy",
        "dMMMy",
        "dMMM",
        "MMMy",
        "EdMMM",
        "EdMy",
        "dMy",
        "dM",
        "My",
        "EdM",
        "d",
        "Ed",
        "y",
        "M",
        "MMM",
        "MMMM",
        "hm",
        "hmv",
        "hmz",
        "h",
        "hv",
        "hz",
        "EEddMMyyyy", // following could be normalized
        "EddMMy",
        "hhmm",
        "hhmmzz",
        "hms",  // following could not be normalized
        "dMMMMMy",
        "EEEEEdM",
    };

    int32_t i = 0;
    UErrorCode ec = U_ZERO_ERROR;
    UnicodeString str, str2;
    SimpleDateFormat ref(data[i++], loc, ec);
    if (!assertSuccess("construct SimpleDateFormat", ec)) return;

#ifdef DTIFMTTS_DEBUG
    char result[1000];
    char mesg[1000];
    snprintf(mesg, sizeof(mesg), "locale: %s\n", locName);
    PRINTMESG(mesg);
#endif

    while (i<data_length) {

        // 'f'
        const char* datestr = data[i++];
        const char* datestr_2 = data[i++];
#ifdef DTIFMTTS_DEBUG
        snprintf(mesg, sizeof(mesg), "original date: %s - %s\n", datestr, datestr_2);
        PRINTMESG(mesg)
#endif
        UDate date = ref.parse(ctou(datestr), ec);
        if (!assertSuccess("parse", ec)) return;
        UDate date_2 = ref.parse(ctou(datestr_2), ec);
        if (!assertSuccess("parse", ec)) return;
        DateInterval dtitv(date, date_2);

        for ( uint32_t skeletonIndex = 0;
              skeletonIndex < UPRV_LENGTHOF(skeleton);
              ++skeletonIndex ) {
            const UnicodeString& oneSkeleton = skeleton[skeletonIndex];
            DateIntervalFormat* dtitvfmt = DateIntervalFormat::createInstance(oneSkeleton, loc, ec);
            if (!assertSuccess("createInstance(skeleton)", ec)) return;
            /*
            // reset the calendar to be Gregorian calendar for "th"
            if ( uprv_strcmp(locName, "th") == 0 ) {
                GregorianCalendar* gregCal = new GregorianCalendar(loc, ec);
                if (!assertSuccess("GregorianCalendar()", ec)) return;
                const DateFormat* dformat = dtitvfmt->getDateFormat();
                DateFormat* newOne = dformat->clone();
                newOne->adoptCalendar(gregCal);
                //dtitvfmt->adoptDateFormat(newOne, ec);
                dtitvfmt->setDateFormat(*newOne, ec);
                delete newOne;
                if (!assertSuccess("adoptDateFormat()", ec)) return;
            }
            */
            FieldPosition pos(FieldPosition::DONT_CARE);
            dtitvfmt->format(&dtitv, str.remove(), pos, ec);
            if (!assertSuccess("format", ec)) return;
#ifdef DTIFMTTS_DEBUG
            oneSkeleton.extract(0,  oneSkeleton.length(), result, "UTF-8");
            snprintf(mesg, sizeof(mesg), "interval by skeleton: %s\n", result);
            PRINTMESG(mesg)
            str.extract(0,  str.length(), result, "UTF-8");
            snprintf(mesg, sizeof(mesg), "interval date: %s\n", result);
            PRINTMESG(mesg)
#endif
            delete dtitvfmt;
        }

        // test user created DateIntervalInfo
        ec = U_ZERO_ERROR;
        DateIntervalInfo* dtitvinf = new DateIntervalInfo(ec);
        dtitvinf->setFallbackIntervalPattern("{0} --- {1}", ec);
        dtitvinf->setIntervalPattern(UDAT_YEAR_ABBR_MONTH_DAY, UCAL_MONTH, "yyyy MMM d - MMM y",ec);
        if (!assertSuccess("DateIntervalInfo::setIntervalPattern", ec)) return;
        dtitvinf->setIntervalPattern(UDAT_YEAR_ABBR_MONTH_DAY, UCAL_HOUR_OF_DAY, "yyyy MMM d HH:mm - HH:mm", ec);
        if (!assertSuccess("DateIntervalInfo::setIntervalPattern", ec)) return;
        DateIntervalFormat* dtitvfmt = DateIntervalFormat::createInstance(UDAT_YEAR_ABBR_MONTH_DAY, loc, *dtitvinf, ec);
        delete dtitvinf;
        if (!assertSuccess("createInstance(skeleton,dtitvinf)", ec)) return;
        FieldPosition pos(FieldPosition::DONT_CARE);
        dtitvfmt->format(&dtitv, str.remove(), pos, ec);
        if ( uprv_strcmp(locName, "th") ) {
            if (!assertSuccess("format", ec)) return;
#ifdef DTIFMTTS_DEBUG
            PRINTMESG("interval format using user defined DateIntervalInfo\n");
            str.extract(0,  str.length(), result, "UTF-8");
            snprintf(mesg, sizeof(mesg), "interval date: %s\n", result);
            PRINTMESG(mesg)
#endif
        } else {
            // for "th", the default calendar is Budhist,
            // not Gregorian.
            assertTrue("Default calendar for \"th\" is Budhist", ec == U_ILLEGAL_ARGUMENT_ERROR);
            ec = U_ZERO_ERROR;
        }
        delete dtitvfmt;
    }
}

void DateIntervalFormatTest::testTicket11583_2() {
    UErrorCode status = U_ZERO_ERROR;
    LocalPointer<DateIntervalFormat> fmt(
            DateIntervalFormat::createInstance("yMMM", "es-US", status));
    if (!assertSuccess("Error create format object", status)) {
        return;
    }
    DateInterval interval((UDate) 1232364615000.0, (UDate) 1328787015000.0);
    UnicodeString appendTo;
    FieldPosition fpos(FieldPosition::DONT_CARE);
    UnicodeString expected("ene de 2009\\u2009\\u2013\\u2009feb de 2012");
    assertEquals(
            "",
            expected.unescape(),
            fmt->format(&interval, appendTo, fpos, status));
    if (!assertSuccess("Error formatting", status)) {
        return;
    }
}


void DateIntervalFormatTest::testTicket11985() {
    UErrorCode status = U_ZERO_ERROR;
    LocalPointer<DateIntervalFormat> fmt(
            DateIntervalFormat::createInstance(UDAT_HOUR_MINUTE, Locale::getEnglish(), status));
    if (!assertSuccess("createInstance", status)) {
        return;
    }
    UnicodeString pattern;
    dynamic_cast<const SimpleDateFormat*>(fmt->getDateFormat())->toPattern(pattern);
    assertEquals("Format pattern", u"h:mm\u202Fa", pattern);
}

// Ticket 11669 - thread safety of DateIntervalFormat::format(). This test failed before
//                the implementation was fixed.

static const DateIntervalFormat *gIntervalFormatter = nullptr;      // The Formatter to be used concurrently by test threads.
static const DateInterval *gInterval = nullptr;                     // The date interval to be formatted concurrently.
static const UnicodeString *gExpectedResult = nullptr;

void DateIntervalFormatTest::threadFunc11669(int32_t threadNum) {
    (void)threadNum;
    for (int loop=0; loop<1000; ++loop) {
        UErrorCode status = U_ZERO_ERROR;
        FieldPosition pos(FieldPosition::DONT_CARE);
        UnicodeString result;
        gIntervalFormatter->format(gInterval, result, pos, status);
        if (U_FAILURE(status)) {
            errln("%s:%d %s", __FILE__, __LINE__, u_errorName(status));
            return;
        }
        if (result != *gExpectedResult) {
            errln("%s:%d Expected \"%s\", got \"%s\"", __FILE__, __LINE__, CStr(*gExpectedResult)(), CStr(result)());
            return;
        }
    }
}

void DateIntervalFormatTest::testTicket11669() {
    UErrorCode status = U_ZERO_ERROR;
    LocalPointer<DateIntervalFormat> formatter(DateIntervalFormat::createInstance(UDAT_YEAR_MONTH_DAY, Locale::getEnglish(), status), status);
    LocalPointer<TimeZone> tz(TimeZone::createTimeZone("America/Los_Angleles"), status);
    LocalPointer<Calendar> intervalStart(Calendar::createInstance(*tz, Locale::getEnglish(), status), status);
    LocalPointer<Calendar> intervalEnd(Calendar::createInstance(*tz, Locale::getEnglish(), status), status);
    if (U_FAILURE(status)) {
        errcheckln(status, "%s:%d %s", __FILE__, __LINE__, u_errorName(status));
        return;
    }

    intervalStart->set(2009, 6, 1, 14, 0);
    intervalEnd->set(2009, 6, 2, 14, 0);
    DateInterval interval(intervalStart->getTime(status), intervalEnd->getTime(status));
    FieldPosition pos(FieldPosition::DONT_CARE);
    UnicodeString expectedResult;
    formatter->format(&interval, expectedResult, pos, status);
    if (U_FAILURE(status)) {
        errln("%s:%d %s", __FILE__, __LINE__, u_errorName(status));
        return;
    }

    gInterval = &interval;
    gIntervalFormatter = formatter.getAlias();
    gExpectedResult = &expectedResult;

    ThreadPool<DateIntervalFormatTest> threads(this, 4, &DateIntervalFormatTest::threadFunc11669);
    threads.start();
    threads.join();

    gInterval = nullptr;             // Don't leave dangling pointers lying around. Not strictly necessary.
    gIntervalFormatter = nullptr;
    gExpectedResult = nullptr;
}


// testTicket12065
//    Using a DateIntervalFormat to format shouldn't change its state in any way
//    that changes how the behavior of operator ==.
void DateIntervalFormatTest::testTicket12065() {
    UErrorCode status = U_ZERO_ERROR;
    LocalPointer<DateIntervalFormat> formatter(DateIntervalFormat::createInstance(UDAT_YEAR_MONTH_DAY, Locale::getEnglish(), status), status);
    if (formatter.isNull()) {
        dataerrln("FAIL: DateIntervalFormat::createInstance failed for Locale::getEnglish()");
        return;
    }
    LocalPointer<DateIntervalFormat> clone(formatter->clone());
    if (*formatter != *clone) {
        errln("%s:%d DateIntervalFormat and clone are not equal.", __FILE__, __LINE__);
        return;
    }
    DateInterval interval((UDate) 1232364615000.0, (UDate) 1328787015000.0);
    UnicodeString appendTo;
    FieldPosition fpos(FieldPosition::DONT_CARE);
    formatter->format(&interval, appendTo, fpos, status);
    if (*formatter != *clone) {
        errln("%s:%d DateIntervalFormat and clone are not equal after formatting.", __FILE__, __LINE__);
        return;
    }
    if (U_FAILURE(status)) {
        errln("%s:%d %s", __FILE__, __LINE__, u_errorName(status));
    }
}


void DateIntervalFormatTest::testFormattedDateInterval() {
    IcuTestErrorCode status(*this, "testFormattedDateInterval");
    LocalPointer<DateIntervalFormat> fmt(DateIntervalFormat::createInstance(u"dMMMMy", "en-US", status), status);

    {
        const char16_t* message = u"FormattedDateInterval test 1";
        const char16_t* expectedString = u"July 20\u2009\u2013\u200925, 2018";
        LocalPointer<Calendar> input1(Calendar::createInstance("en-GB", status));
        if (status.errIfFailureAndReset()) { return; }
        LocalPointer<Calendar> input2(Calendar::createInstance("en-GB", status));
        if (status.errIfFailureAndReset()) { return; }
        input1->set(2018, 6, 20);
        input2->set(2018, 6, 25);
        FormattedDateInterval result = fmt->formatToValue(*input1, *input2, status);
        static const UFieldPositionWithCategory expectedFieldPositions[] = {
            // field, begin index, end index
            {UFIELD_CATEGORY_DATE, UDAT_MONTH_FIELD, 0, 4},
            {UFIELD_CATEGORY_DATE_INTERVAL_SPAN, 0, 5, 7},
            {UFIELD_CATEGORY_DATE, UDAT_DATE_FIELD, 5, 7},
            {UFIELD_CATEGORY_DATE_INTERVAL_SPAN, 1, 10, 12},
            {UFIELD_CATEGORY_DATE, UDAT_DATE_FIELD, 10, 12},
            {UFIELD_CATEGORY_DATE, UDAT_YEAR_FIELD, 14, 18}};
        checkMixedFormattedValue(
            message,
            result,
            expectedString,
            expectedFieldPositions,
            UPRV_LENGTHOF(expectedFieldPositions));
    }

    {
        const char16_t* message = u"FormattedDateInterval identical dates test: no span field";
        const char16_t* expectedString = u"July 20, 2018";
        LocalPointer<Calendar> input1(Calendar::createInstance("en-GB", status));
        input1->set(2018, 6, 20);
        FormattedDateInterval result = fmt->formatToValue(*input1, *input1, status);
        static const UFieldPositionWithCategory expectedFieldPositions[] = {
            // field, begin index, end index
            {UFIELD_CATEGORY_DATE, UDAT_MONTH_FIELD, 0, 4},
            {UFIELD_CATEGORY_DATE, UDAT_DATE_FIELD, 5, 7},
            {UFIELD_CATEGORY_DATE, UDAT_YEAR_FIELD, 9, 13}};
        checkMixedFormattedValue(
            message,
            result,
            expectedString,
            expectedFieldPositions,
            UPRV_LENGTHOF(expectedFieldPositions));
    }

    // Test sample code
    {
        LocalPointer<Calendar> input1(Calendar::createInstance("en-GB", status));
        LocalPointer<Calendar> input2(Calendar::createInstance("en-GB", status));
        input1->set(2018, 6, 20);
        input2->set(2018, 7, 3);

        // Let fmt be a DateIntervalFormat for locale en-US and skeleton dMMMMy
        // Let input1 be July 20, 2018 and input2 be August 3, 2018:
        FormattedDateInterval result = fmt->formatToValue(*input1, *input2, status);
        assertEquals("Expected output from format",
            u"July 20\u2009\u2013\u2009August 3, 2018", result.toString(status));
        ConstrainedFieldPosition cfpos;
        cfpos.constrainField(UFIELD_CATEGORY_DATE_INTERVAL_SPAN, 0);
        if (result.nextPosition(cfpos, status)) {
            assertEquals("Expect start index", 0, cfpos.getStart());
            assertEquals("Expect end index", 7, cfpos.getLimit());
        } else {
            // No such span: can happen if input dates are equal.
        }
        assertFalse("No more than one occurrence of the field",
            result.nextPosition(cfpos, status));
    }

    // To test the fallback pattern behavior, make a custom DateIntervalInfo.
    DateIntervalInfo dtitvinf(status);
    dtitvinf.setFallbackIntervalPattern("<< {1} --- {0} >>", status);
    fmt.adoptInsteadAndCheckErrorCode(
        DateIntervalFormat::createInstance(u"dMMMMy", "en-US", dtitvinf, status),
        status);

    {
        const char16_t* message = u"FormattedDateInterval with fallback format test 1";
        const char16_t* expectedString = u"<< July 25, 2018 --- July 20, 2018 >>";
        LocalPointer<Calendar> input1(Calendar::createInstance("en-GB", status));
        if (status.errIfFailureAndReset()) { return; }
        LocalPointer<Calendar> input2(Calendar::createInstance("en-GB", status));
        if (status.errIfFailureAndReset()) { return; }
        input1->set(2018, 6, 20);
        input2->set(2018, 6, 25);
        FormattedDateInterval result = fmt->formatToValue(*input1, *input2, status);
        static const UFieldPositionWithCategory expectedFieldPositions[] = {
            // field, begin index, end index
            {UFIELD_CATEGORY_DATE_INTERVAL_SPAN, 1, 3, 16},
            {UFIELD_CATEGORY_DATE, UDAT_MONTH_FIELD, 3, 7},
            {UFIELD_CATEGORY_DATE, UDAT_DATE_FIELD, 8, 10},
            {UFIELD_CATEGORY_DATE, UDAT_YEAR_FIELD, 12, 16},
            {UFIELD_CATEGORY_DATE_INTERVAL_SPAN, 0, 21, 34},
            {UFIELD_CATEGORY_DATE, UDAT_MONTH_FIELD, 21, 25},
            {UFIELD_CATEGORY_DATE, UDAT_DATE_FIELD, 26, 28},
            {UFIELD_CATEGORY_DATE, UDAT_YEAR_FIELD, 30, 34}};
        checkMixedFormattedValue(
            message,
            result,
            expectedString,
            expectedFieldPositions,
            UPRV_LENGTHOF(expectedFieldPositions));
    }
}

void DateIntervalFormatTest::testCreateInstanceForAllLocales() {
    IcuTestErrorCode status(*this, "testCreateInstanceForAllLocales");
    int32_t locale_count = 0;
    const Locale* locales = icu::Locale::getAvailableLocales(locale_count);
    // Iterate through all locales
    for (int32_t i = 0; i < locale_count; i++) {
        std::unique_ptr<icu::StringEnumeration> calendars(
            icu::Calendar::getKeywordValuesForLocale(
                "calendar", locales[i], false, status));
        int32_t calendar_count = calendars->count(status);
        if (status.errIfFailureAndReset()) { break; }
        // In quick mode, only run 1/5 of locale combination
        // to make the test run faster.
        if (quick && (i % 5 != 0)) continue;
        LocalPointer<DateIntervalFormat> fmt(
            DateIntervalFormat::createInstance(u"dMMMMy", locales[i], status),
            status);
        if (status.errIfFailureAndReset(locales[i].getName())) {
            continue;
        }
        // Iterate through all calendars in this locale
        for (int32_t j = 0; j < calendar_count; j++) {
            // In quick mode, only run 1/7 of locale/calendar combination
            // to make the test run faster.
            if (quick && ((i * j) % 7 != 0)) continue;
            const char* calendar = calendars->next(nullptr, status);
            Locale locale(locales[i]);
            locale.setKeywordValue("calendar", calendar, status);
            fmt.adoptInsteadAndCheckErrorCode(
                DateIntervalFormat::createInstance(u"dMMMMy", locale, status),
                status);
            status.errIfFailureAndReset(locales[i].getName());
        }
    }
}

void DateIntervalFormatTest::testFormatMillisecond() {
    struct
    {
        int year;
        int month;
        int day;
        int from_hour;
        int from_miniute;
        int from_second;
        int from_millisecond;
        int to_hour;
        int to_miniute;
        int to_second;
        int to_millisecond;
        const char* skeleton;
        const char16_t* expected;
    }
    kTestCases [] =
    {
        //           From            To
        //   y  m  d   h  m   s   ms   h  m   s   ms   skeleton  expected
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "ms",     u"23:45"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "msS",    u"23:45.3"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "msSS",   u"23:45.32"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "msSSS",  u"23:45.321"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "ms",     u"23:45"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "msS",    u"23:45.3\u2009\u2013\u200923:45.9"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "msSS",   u"23:45.32\u2009\u2013\u200923:45.98"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "msSSS",  u"23:45.321\u2009\u2013\u200923:45.987"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "ms",     u"23:45\u2009\u2013\u200923:46"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "msS",    u"23:45.3\u2009\u2013\u200923:46.9"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "msSS",   u"23:45.32\u2009\u2013\u200923:46.98"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "msSSS",  u"23:45.321\u2009\u2013\u200923:46.987"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "ms",     u"23:45\u2009\u2013\u200924:45"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "msS",    u"23:45.3\u2009\u2013\u200924:45.9"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "msSS",   u"23:45.32\u2009\u2013\u200924:45.98"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "msSSS",  u"23:45.321\u2009\u2013\u200924:45.987"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "s",      u"45"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "sS",     u"45.3"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "sSS",    u"45.32"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "sSSS",   u"45.321"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "s",      u"45"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "sS",     u"45.3\u2009\u2013\u200945.9"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "sSS",    u"45.32\u2009\u2013\u200945.98"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "sSSS",   u"45.321\u2009\u2013\u200945.987"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "s",      u"45\u2009\u2013\u200946"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "sS",     u"45.3\u2009\u2013\u200946.9"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "sSS",    u"45.32\u2009\u2013\u200946.98"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "sSSS",   u"45.321\u2009\u2013\u200946.987"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "s",      u"45\u2009\u2013\u200945"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "sS",     u"45.3\u2009\u2013\u200945.9"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "sSS",    u"45.32\u2009\u2013\u200945.98"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "sSSS",   u"45.321\u2009\u2013\u200945.987"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "S",      u"3"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "SS",     u"32"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 321, "SSS",    u"321"},

        // Same millisecond but in different second.
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 321, "S",      u"3\u2009\u2013\u20093"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 321, "SS",     u"32\u2009\u2013\u200932"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 321, "SSS",    u"321\u2009\u2013\u2009321"},

        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "S",      u"3\u2009\u2013\u20099"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "SS",     u"32\u2009\u2013\u200998"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 45, 987, "SSS",    u"321\u2009\u2013\u2009987"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "S",      u"3\u2009\u2013\u20099"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "SS",     u"32\u2009\u2013\u200998"},
        { 2019, 2, 10, 1, 23, 45, 321, 1, 23, 46, 987, "SSS",    u"321\u2009\u2013\u2009987"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "S",      u"3\u2009\u2013\u20099"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "SS",     u"32\u2009\u2013\u200998"},
        { 2019, 2, 10, 1, 23, 45, 321, 2, 24, 45, 987, "SSS",    u"321\u2009\u2013\u2009987"},
        { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, nullptr, nullptr},
    };

    const Locale &enLocale = Locale::getEnglish();
    IcuTestErrorCode status(*this, "testFormatMillisecond");
    LocalPointer<Calendar> calendar(Calendar::createInstance(enLocale, status));
    if (status.errIfFailureAndReset()) { return; }

    for (int32_t i = 0; kTestCases[i].year > 0; i++) {
        LocalPointer<DateIntervalFormat> fmt(DateIntervalFormat::createInstance(
            kTestCases[i].skeleton, enLocale, status));
        if (status.errIfFailureAndReset()) { continue; }

        calendar->clear();
        calendar->set(kTestCases[i].year, kTestCases[i].month, kTestCases[i].day,
                      kTestCases[i].from_hour, kTestCases[i].from_miniute, kTestCases[i].from_second);
        UDate from = calendar->getTime(status) + kTestCases[i].from_millisecond;
        if (status.errIfFailureAndReset()) { continue; }

        calendar->clear();
        calendar->set(kTestCases[i].year, kTestCases[i].month, kTestCases[i].day,
                      kTestCases[i].to_hour, kTestCases[i].to_miniute, kTestCases[i].to_second);
        UDate to = calendar->getTime(status) + kTestCases[i].to_millisecond;
        FormattedDateInterval  res = fmt->formatToValue(DateInterval(from, to), status);
        if (status.errIfFailureAndReset()) { continue; }

        UnicodeString formatted = res.toString(status);
        if (status.errIfFailureAndReset()) { continue; }
        if (formatted != kTestCases[i].expected) {
            std::string tmp1;
            std::string tmp2;
            errln("Case %d for skeleton %s : Got %s but expect %s",
                  i, kTestCases[i].skeleton, formatted.toUTF8String<std::string>(tmp1).c_str(),
                  UnicodeString(kTestCases[i].expected).toUTF8String<std::string>(tmp2).c_str());
        }
    }
}

void DateIntervalFormatTest::testTicket20707() {
    IcuTestErrorCode status(*this, "testTicket20707");

    const char16_t timeZone[] = u"UTC";
    Locale locales[] = {"en-u-hc-h24", "en-u-hc-h23", "en-u-hc-h12", "en-u-hc-h11", "en", "en-u-hc-h25", "hi-IN-u-hc-h11"};

    // Clomuns: hh, HH, kk, KK, jj, JJs, CC
    UnicodeString expected[][7] = {
        // Hour-cycle: k
        {u"12\u202FAM", u"24", u"24", u"12\u202FAM", u"24", u"0 (hour: 24)", u"12\u202FAM"},
        // Hour-cycle: H
        {u"12\u202FAM", u"00", u"00", u"12\u202FAM", u"00", u"0 (hour: 00)", u"12\u202FAM"},
        // Hour-cycle: h
        {u"12\u202FAM", u"00", u"00", u"12\u202FAM", u"12\u202FAM", u"0 (hour: 12)", u"12\u202FAM"},
        // Hour-cycle: K
        {u"0\u202FAM", u"00", u"00", u"0\u202FAM", u"0\u202FAM", u"0 (hour: 00)", u"0\u202FAM"},
        {u"12\u202FAM", u"00", u"00", u"12\u202FAM", u"12\u202FAM", u"0 (hour: 12)", u"12\u202FAM"},
        {u"12\u202FAM", u"00", u"00", u"12\u202FAM", u"12\u202FAM", u"0 (hour: 12)", u"12\u202FAM"},
        // Hour-cycle: K
        {u"0 am", u"00", u"00", u"0 am", u"0 am", u"0 (\u0918\u0902\u091F\u093E: 00)", u"\u0930\u093E\u0924 0"}
    };

    int32_t i = 0;
    for (Locale locale : locales) {
        int32_t j = 0;
        for (const UnicodeString skeleton : {u"hh", u"HH", u"kk", u"KK", u"jj", u"JJs", u"CC"}) {
            LocalPointer<DateIntervalFormat> dtifmt(DateIntervalFormat::createInstance(skeleton, locale, status));
            if (status.errDataIfFailureAndReset()) {
                continue;
            }
            FieldPosition fposition;
            UnicodeString result;
            LocalPointer<Calendar> calendar(Calendar::createInstance(TimeZone::createTimeZone(timeZone), status));
            calendar->setTime(UDate(1563235200000), status);
            dtifmt->format(*calendar, *calendar, result, fposition, status);

            const char* localeID = locale.getName();
            assertEquals(localeID, expected[i][j++], result);
        }
        i++;
    }
}

void DateIntervalFormatTest::getCategoryAndField(
        const FormattedDateInterval& formatted,
        std::vector<int32_t>& categories,
        std::vector<int32_t>& fields,
        IcuTestErrorCode& status) {
    categories.clear();
    fields.clear();
    ConstrainedFieldPosition cfpos;
    while (formatted.nextPosition(cfpos, status)) {
        categories.push_back(cfpos.getCategory());
        fields.push_back(cfpos.getField());
    }
}

void DateIntervalFormatTest::verifyCategoryAndField(
        const FormattedDateInterval& formatted,
        const std::vector<int32_t>& categories,
        const std::vector<int32_t>& fields,
        IcuTestErrorCode& status) {
    ConstrainedFieldPosition cfpos;
    int32_t i = 0;
    while (formatted.nextPosition(cfpos, status)) {
        assertEquals("Category", cfpos.getCategory(), categories[i]);
        assertEquals("Field", cfpos.getField(), fields[i]);
        i++;
    }
}

void DateIntervalFormatTest::testTicket21222GregorianEraDiff() {
    IcuTestErrorCode status(*this, "   ");

    LocalPointer<Calendar> cal(Calendar::createInstance(*TimeZone::getGMT(), status));
    if (U_FAILURE(status)) {
        errln("Failure encountered: %s", u_errorName(status));
        return;
    }
    std::vector<int32_t> expectedCategory;
    std::vector<int32_t> expectedField;

    // Test Gregorian calendar
    LocalPointer<DateIntervalFormat> g(
        DateIntervalFormat::createInstance(
            u"h", Locale("en"), status));
    if (U_FAILURE(status)) {
        errln("Failure encountered: %s", u_errorName(status));
        return;
    }
    g->setTimeZone(*(TimeZone::getGMT()));
    cal->setTime(Calendar::getNow(), status);
    cal->set(123, UCAL_APRIL, 5, 6, 0);
    FormattedDateInterval formatted;

    UDate date0123Apr5AD = cal->getTime(status);

    cal->set(UCAL_YEAR, 124);
    UDate date0124Apr5AD = cal->getTime(status);

    cal->set(UCAL_ERA, 0);
    UDate date0124Apr5BC = cal->getTime(status);

    cal->set(UCAL_YEAR, 123);
    UDate date0123Apr5BC = cal->getTime(status);

    DateInterval bothAD(date0123Apr5AD, date0124Apr5AD);
    DateInterval bothBC(date0124Apr5BC, date0123Apr5BC);
    DateInterval BCtoAD(date0123Apr5BC, date0124Apr5AD);

    formatted = g->formatToValue(bothAD, status);
    assertEquals("Gregorian - calendar both dates in AD",
                 u"4/5/123, 6\u202FAM\u2009\u2013\u20094/5/124, 6\u202FAM",
                 formatted.toString(status));

    formatted = g->formatToValue(bothBC, status);
    assertEquals("Gregorian - calendar both dates in BC",
                 u"4/5/124, 6\u202FAM\u2009\u2013\u20094/5/123, 6\u202FAM",
                 formatted.toString(status));

    formatted = g->formatToValue(BCtoAD, status);
    assertEquals("Gregorian - BC to AD",
                 u"4/5/123 BC, 6\u202FAM\u2009\u2013\u20094/5/124 AD, 6\u202FAM",
                 formatted.toString(status));
}

void DateIntervalFormatTest::testTicket21222ROCEraDiff() {
    IcuTestErrorCode status(*this, "testTicket21222ROCEraDiff");

    LocalPointer<Calendar> cal(Calendar::createInstance(*TimeZone::getGMT(), status));
    if (U_FAILURE(status)) {
        errln("Failure encountered: %s", u_errorName(status));
        return;
    }
    std::vector<int32_t> expectedCategory;
    std::vector<int32_t> expectedField;

    // Test roc calendar
    LocalPointer<DateIntervalFormat> roc(
        DateIntervalFormat::createInstance(
            u"h", Locale("zh-Hant-TW@calendar=roc"), status));
    if (U_FAILURE(status)) {
        errln("Failure encountered: %s", u_errorName(status));
        return;
    }
    roc->setTimeZone(*(TimeZone::getGMT()));

    FormattedDateInterval formatted;
    // set date1910Jan2 to 1910/1/2 AD which is prior to MG
    cal->set(1910, UCAL_JANUARY, 2, 6, 0);
    UDate date1910Jan2 = cal->getTime(status);

    // set date1911Jan2 to 1911/1/2 AD which is also prior to MG
    cal->set(UCAL_YEAR, 1911);
    UDate date1911Jan2 = cal->getTime(status);

    // set date1912Jan2 to 1912/1/2 AD which is after MG
    cal->set(UCAL_YEAR, 1912);
    UDate date1912Jan2 = cal->getTime(status);

    // set date1913Jan2 to 1913/1/2 AD which is also after MG
    cal->set(UCAL_YEAR, 1913);
    UDate date1913Jan2 = cal->getTime(status);

    DateInterval bothBeforeMG(date1910Jan2, date1911Jan2);
    DateInterval beforeAfterMG(date1911Jan2, date1913Jan2);
    DateInterval bothAfterMG(date1912Jan2, date1913Jan2);

    formatted = roc->formatToValue(bothAfterMG, status);
    assertEquals("roc calendar - both dates in MG Era",
                 u"民國1/1/2 上午6時\u2009\u2013\u2009民國2/1/2 上午6時",
                 formatted.toString(status));
    getCategoryAndField(formatted, expectedCategory,
                        expectedField, status);

    formatted = roc->formatToValue(beforeAfterMG, status);
    assertEquals("roc calendar - prior MG Era and in MG Era",
                 u"民國前1/1/2 上午6時\u2009\u2013\u2009民國2/1/2 上午6時",
                 formatted.toString(status));
    verifyCategoryAndField(formatted, expectedCategory, expectedField, status);

    formatted = roc->formatToValue(bothBeforeMG, status);
    assertEquals("roc calendar - both dates prior MG Era",
                 u"民國前2/1/2 上午6時\u2009\u2013\u2009民國前1/1/2 上午6時",
                 formatted.toString(status));
    verifyCategoryAndField(formatted, expectedCategory, expectedField, status);
}

void DateIntervalFormatTest::testTicket21222JapaneseEraDiff() {
    IcuTestErrorCode status(*this, "testTicket21222JapaneseEraDiff");

    LocalPointer<Calendar> cal(Calendar::createInstance(*TimeZone::getGMT(), status));
    if (U_FAILURE(status)) {
        errln("Failure encountered: %s", u_errorName(status));
        return;
    }
    std::vector<int32_t> expectedCategory;
    std::vector<int32_t> expectedField;

    // Test roc calendar
    // Test Japanese calendar
    LocalPointer<DateIntervalFormat> japanese(
        DateIntervalFormat::createInstance(
            u"h", Locale("ja@calendar=japanese"), status));
    if (U_FAILURE(status)) {
        errln("Failure encountered: %s", u_errorName(status));
        return;
    }
    japanese->setTimeZone(*(TimeZone::getGMT()));

    FormattedDateInterval formatted;

    cal->set(2019, UCAL_MARCH, 2, 6, 0);
    UDate date2019Mar2 = cal->getTime(status);

    cal->set(UCAL_MONTH, UCAL_APRIL);
    cal->set(UCAL_DAY_OF_MONTH, 3);
    UDate date2019Apr3 = cal->getTime(status);

    cal->set(UCAL_MONTH, UCAL_MAY);
    cal->set(UCAL_DAY_OF_MONTH, 4);
    UDate date2019May4 = cal->getTime(status);

    cal->set(UCAL_MONTH, UCAL_JUNE);
    cal->set(UCAL_DAY_OF_MONTH, 5);
    UDate date2019Jun5 = cal->getTime(status);

    DateInterval bothBeforeReiwa(date2019Mar2, date2019Apr3);
    DateInterval beforeAfterReiwa(date2019Mar2, date2019May4);
    DateInterval bothAfterReiwa(date2019May4, date2019Jun5);

    formatted = japanese->formatToValue(bothAfterReiwa, status);
    assertEquals("japanese calendar - both dates in Reiwa",
                 u"R1/5/4 午前6時～R1/6/5 午前6時",
                 formatted.toString(status));
    getCategoryAndField(formatted, expectedCategory,
                        expectedField, status);

    formatted = japanese->formatToValue(bothBeforeReiwa, status);
    assertEquals("japanese calendar - both dates before Reiwa",
                 u"H31/3/2 午前6時～H31/4/3 午前6時",
                 formatted.toString(status));
    verifyCategoryAndField(formatted, expectedCategory, expectedField, status);

    formatted = japanese->formatToValue(beforeAfterReiwa, status);
    assertEquals("japanese calendar - date before and in Reiwa",
                 u"H31/3/2 午前6時～R1/5/4 午前6時",
                 formatted.toString(status));
    verifyCategoryAndField(formatted, expectedCategory, expectedField, status);
}

void DateIntervalFormatTest::testTicket21939() {
    IcuTestErrorCode err(*this, "testTicket21939");
    LocalPointer<DateIntervalFormat> dif(DateIntervalFormat::createInstance(u"rMdhm", Locale::forLanguageTag("en-u-ca-chinese", err), err));
    
    if (assertSuccess("Error creating DateIntervalFormat", err)) {
        const DateFormat* df = dif->getDateFormat();
        const SimpleDateFormat* sdf = dynamic_cast<const SimpleDateFormat*>(df);
        UnicodeString pattern;
        assertEquals("Wrong pattern", u"M/d/r, h:mm\u202Fa", sdf->toPattern(pattern));
    }
}

void DateIntervalFormatTest::testTicket20710_FieldIdentity() {
    IcuTestErrorCode status(*this, "testTicket20710_FieldIdentity");
    LocalPointer<DateIntervalFormat> dtifmt(DateIntervalFormat::createInstance("eeeeMMMddyyhhmma", "de-CH", status));
    LocalPointer<Calendar> calendar1(Calendar::createInstance(TimeZone::createTimeZone(u"CET"), status));
    calendar1->setTime(UDate(1563235200000), status);
    LocalPointer<Calendar> calendar2(Calendar::createInstance(TimeZone::createTimeZone(u"CET"), status));
    calendar2->setTime(UDate(1564235200000), status);

    {
        auto fv = dtifmt->formatToValue(*calendar1, *calendar2, status);
        ConstrainedFieldPosition cfp;
        cfp.constrainCategory(UFIELD_CATEGORY_DATE_INTERVAL_SPAN);
        assertTrue("Span field should be in non-identity formats", fv.nextPosition(cfp, status));
    }
    {
        auto fv = dtifmt->formatToValue(*calendar1, *calendar1, status);
        ConstrainedFieldPosition cfp;
        cfp.constrainCategory(UFIELD_CATEGORY_DATE_INTERVAL_SPAN);
        assertFalse("Span field should not be in identity formats", fv.nextPosition(cfp, status));
    }
}

void DateIntervalFormatTest::testTicket20710_IntervalIdentity() {
    IcuTestErrorCode status(*this, "testTicket20710_IntervalIdentity");

    const char16_t timeZone[] = u"PST";
    int32_t count = 0;
    const Locale* locales = Locale::getAvailableLocales(count);
    const UnicodeString skeletons[] = {
        u"EEEEMMMMdyhmmssazzzz",
        u"EEEEMMMMdyhhmmssazzzz",
        u"EEEEMMMMddyyyyhhmmssvvvva",
        u"EEEEMMMMddhmszza",
        u"EEMMMMddyyhhzza",
        u"eeeeMMMddyyhhmma",
        u"MMddyyyyhhmmazzzz",
        u"hhmmazzzz",
        u"hmmssazzzz",
        u"hhmmsszzzz",
        u"MMddyyyyhhmmzzzz"
    };

    Locale quickLocales[] = {
        {"en"}, {"es"}, {"sr"}, {"zh"}
    };
    if (quick) {
        locales = quickLocales;
        count = UPRV_LENGTHOF(quickLocales);
    }

    for (int32_t i = 0; i < count; i++) {
        const Locale locale = locales[i];
        LocalPointer<DateTimePatternGenerator> gen(DateTimePatternGenerator::createInstance(locale, status));
        LocalPointer<Calendar> calendar(Calendar::createInstance(TimeZone::createTimeZone(timeZone), status));
        calendar->setTime(UDate(1563235200000), status);
        for (auto skeleton : skeletons) {
            LocalPointer<DateIntervalFormat> dtifmt(DateIntervalFormat::createInstance(skeleton, locale, status));

            FieldPosition fposition;
            UnicodeString resultIntervalFormat;
            dtifmt->format(*calendar, *calendar, resultIntervalFormat, fposition, status);

            UnicodeString pattern = gen->getBestPattern(skeleton, status);
            SimpleDateFormat dateFormat(pattern, locale, status);

            FieldPositionIterator fpositer;
            UnicodeString resultDateFormat;

            dateFormat.format(*calendar, resultDateFormat, &fpositer, status);
            assertEquals("DateIntervalFormat should fall back to DateFormat in the identity format", resultDateFormat, resultIntervalFormat);
        }
    }
    
}

#endif /* #if !UCONFIG_NO_FORMATTING */
