/********************************************************************
 * Copyright (c) 1997-2007, International Business Machines
 * Corporation and others. All Rights Reserved.
 ********************************************************************
 *
 * File CCALTST.C
 *
 * Modification History:
 *        Name                     Description            
 *     Madhu Katragadda               Creation
 ********************************************************************
 */

/* C API AND FUNCTIONALITY TEST FOR CALENDAR (ucol.h)*/

#include "unicode/utypes.h"

#if !UCONFIG_NO_FORMATTING

#include <stdlib.h>

#include "unicode/uloc.h"
#include "unicode/ucal.h"
#include "unicode/udat.h"
#include "unicode/ustring.h"
#include "cintltst.h"
#include "ccaltst.h"
#include "cformtst.h"
#include "cstring.h"

void TestGregorianChange(void);

void addCalTest(TestNode** root);

void addCalTest(TestNode** root)
{

    addTest(root, &TestCalendar, "tsformat/ccaltst/TestCalendar");
    addTest(root, &TestGetSetDateAPI, "tsformat/ccaltst/TestGetSetDateAPI");
    addTest(root, &TestFieldGetSet, "tsformat/ccaltst/TestFieldGetSet");
    addTest(root, &TestAddRollExtensive, "tsformat/ccaltst/TestAddRollExtensive");
    addTest(root, &TestGetLimits, "tsformat/ccaltst/TestGetLimits");
    addTest(root, &TestDOWProgression, "tsformat/ccaltst/TestDOWProgression");
    addTest(root, &TestGMTvsLocal, "tsformat/ccaltst/TestGMTvsLocal");
    addTest(root, &TestGregorianChange, "tsformat/ccaltst/TestGregorianChange");
}

/* "GMT" */
static const UChar fgGMTID [] = { 0x0047, 0x004d, 0x0054, 0x0000 };

/* "PST" */
static const UChar PST[] = {0x50, 0x53, 0x54, 0x00}; /* "PST" */

static const UChar EUROPE_PARIS[] = {0x45, 0x75, 0x72, 0x6F, 0x70, 0x65, 0x2F, 0x50, 0x61, 0x72, 0x69, 0x73, 0x00}; /* "Europe/Paris" */

static void TestCalendar()
{
    UCalendar *caldef = 0, *caldef2 = 0, *calfr = 0, *calit = 0;
    UEnumeration* uenum = NULL;
    int32_t count, count2, i,j;
    UChar *tzID = 0;
    UChar *tzdname = 0;
    UErrorCode status = U_ZERO_ERROR;
    UDate now;
    UDateFormat *datdef = 0;
    UChar *result = 0;
    int32_t resultlength, resultlengthneeded;
    char tempMsgBuf[256];
    UChar zone1[32], zone2[32];
    const char *tzver = 0;

#ifdef U_USE_UCAL_OBSOLETE_2_8
    /*Testing countAvailableTimeZones*/
    int32_t offset=0;
    log_verbose("\nTesting ucal_countAvailableTZIDs\n");
    count=ucal_countAvailableTZIDs(offset);
    log_verbose("The number of timezone id's present with offset 0 are %d:\n", count);
    if(count < 5) /* Don't hard code an exact == test here! */
        log_err("FAIL: error in the ucal_countAvailableTZIDs - got %d expected at least 5 total\n", count);

    /*Testing getAvailableTZIDs*/
    log_verbose("\nTesting ucal_getAvailableTZIDs");
    for(i=0;i<count;i++){
        ucal_getAvailableTZIDs(offset, i, &status);
        if(U_FAILURE(status)){
            log_err("FAIL: ucal_getAvailableTZIDs returned %s\n", u_errorName(status));
        }
        log_verbose("%s\n", u_austrcpy(tempMsgBuf, ucal_getAvailableTZIDs(offset, i, &status)));
    }
    /*get Illegal TZID where index >= count*/
    ucal_getAvailableTZIDs(offset, i, &status);
    if(status != U_INDEX_OUTOFBOUNDS_ERROR){
        log_err("FAIL:for TZID index >= count Expected INDEX_OUTOFBOUNDS_ERROR Got %s\n", u_errorName(status));
    }
    status=U_ZERO_ERROR;
#endif
    
    /*Test ucal_openTimeZones & ucal_openCountryTimeZones*/
    for (j=0; j<2; ++j) {
        const char* api = (j==0) ? "ucal_openTimeZones()" :
            "ucal_openCountryTimeZones(US)";
        uenum = (j==0) ? ucal_openTimeZones(&status) :
            ucal_openCountryTimeZones("US", &status);
        if (U_FAILURE(status)) {
            log_err("FAIL: %s failed with %s", api,
                    u_errorName(status));
        } else {
            const char* id;
            int32_t len;
            count = uenum_count(uenum, &status);
            log_verbose("%s returned %d timezone id's:\n", api, count);
            if (count < 5) { /* Don't hard code an exact == test here! */
                log_err("FAIL: in %s, got %d, expected at least 5\n", api, count);
            }
            uenum_reset(uenum, &status);    
            if (U_FAILURE(status)){
                log_err("FAIL: uenum_reset for %s returned %s\n",
                        api, u_errorName(status));
            }
            for (i=0; i<count; i++) {
                id = uenum_next(uenum, &len, &status);
                if (U_FAILURE(status)){
                    log_err("FAIL: uenum_next for %s returned %s\n",
                            api, u_errorName(status));
                } else {
                    log_verbose("%s\n", id);
                }
            }
            /* Next one should be NULL */
            id = uenum_next(uenum, &len, &status);
            if (id != NULL) {
                log_err("FAIL: uenum_next for %s returned %s, expected NULL\n",
                        api, id);
            }
        }
        uenum_close(uenum);
    }

    /*Test ucal_getDSTSavings*/
    status = U_ZERO_ERROR;
    i = ucal_getDSTSavings(fgGMTID, &status);
    if (U_FAILURE(status)) {
        log_err("FAIL: ucal_getDSTSavings(GMT) => %s\n",
                u_errorName(status));
    } else if (i != 0) {
        log_err("FAIL: ucal_getDSTSavings(GMT) => %d, expect 0\n", i);
    }
    i = ucal_getDSTSavings(PST, &status);
    if (U_FAILURE(status)) {
        log_err("FAIL: ucal_getDSTSavings(PST) => %s\n",
                u_errorName(status));
    } else if (i != 1*60*60*1000) {
        log_err("FAIL: ucal_getDSTSavings(PST) => %d, expect %d\n", i, 1*60*60*1000);
    }

    /*Test ucal_set/getDefaultTimeZone*/
    status = U_ZERO_ERROR;
    i = ucal_getDefaultTimeZone(zone1, sizeof(zone1)/sizeof(zone1[0]), &status);
    if (U_FAILURE(status)) {
        log_err("FAIL: ucal_getDefaultTimeZone() => %s\n",
                u_errorName(status));
    } else {
        ucal_setDefaultTimeZone(EUROPE_PARIS, &status);
        if (U_FAILURE(status)) {
            log_err("FAIL: ucal_setDefaultTimeZone(Europe/Paris) => %s\n",
                    u_errorName(status));
        } else {
            i = ucal_getDefaultTimeZone(zone2, sizeof(zone2)/sizeof(zone2[0]), &status);
            if (U_FAILURE(status)) {
                log_err("FAIL: ucal_getDefaultTimeZone() => %s\n",
                        u_errorName(status));
            } else {
                if (u_strcmp(zone2, EUROPE_PARIS) != 0) {
                    log_err("FAIL: ucal_getDefaultTimeZone() did not return Europe/Paris\n");
                }
            }
        }
        status = U_ZERO_ERROR;
        ucal_setDefaultTimeZone(zone1, &status);
    }
    
    /*Test ucal_getTZDataVersion*/
    status = U_ZERO_ERROR;
    tzver = ucal_getTZDataVersion(&status);
    if (U_FAILURE(status)) {
        log_err("FAIL: ucal_getTZDataVersion() => %s\n", u_errorName(status));
    } else if (uprv_strlen(tzver) != 5 /*4 digits + 1 letter*/) {
        log_err("FAIL: Bad version string was returned by ucal_getTZDataVersion\n");
    } else {
        log_verbose("PASS: ucal_getTZDataVersion returned %s\n", tzver);
    }
    

    /*Testing the  ucal_open() function*/
    status = U_ZERO_ERROR;
    log_verbose("\nTesting the ucal_open()\n");
    tzID=(UChar*)malloc(sizeof(UChar) * 4);
    u_uastrcpy(tzID, "PST");
    caldef=ucal_open(tzID, u_strlen(tzID), "en_US", UCAL_TRADITIONAL, &status);
    if(U_FAILURE(status)){
        log_err("FAIL: error in ucal_open caldef : %s\n", u_errorName(status));
    }
    
    caldef2=ucal_open(tzID, u_strlen(tzID), "en_US", UCAL_TRADITIONAL, &status);
    if(U_FAILURE(status)){
        log_err("FAIL: error in ucal_open caldef : %s\n", u_errorName(status));
    }
    u_strcpy(tzID, fgGMTID);
    calfr=ucal_open(tzID, u_strlen(tzID), "fr_FR", UCAL_TRADITIONAL, &status);
    if(U_FAILURE(status)){
        log_err("FAIL: error in ucal_open calfr : %s\n", u_errorName(status));
    }
    calit=ucal_open(tzID, u_strlen(tzID), "it_IT", UCAL_TRADITIONAL, &status);
    if(U_FAILURE(status))    {
        log_err("FAIL: error in ucal_open calit : %s\n", u_errorName(status));
    }
    
    
    /*Testing udat_getAvailable() and udat_countAvailable()*/ 
    log_verbose("\nTesting getAvailableLocales and countAvailable()\n");
    count=ucal_countAvailable();
    /* use something sensible w/o hardcoding the count */
    if(count > 0) {
        log_verbose("PASS: ucal_countAvailable() works fine\n");
        log_verbose("The no: of locales for which calendars are avilable are %d\n", count);
    } else {
        log_data_err("FAIL: Error in countAvailable()\n");
    }

    for(i=0;i<count;i++) {
       log_verbose("%s\n", ucal_getAvailable(i)); 
    }
    

    /*Testing the equality between calendar's*/
    log_verbose("\nTesting ucal_equivalentTo()\n");
    if(caldef && caldef2 && calfr && calit) { 
      if(ucal_equivalentTo(caldef, caldef2) == FALSE || ucal_equivalentTo(caldef, calfr)== TRUE || 
        ucal_equivalentTo(caldef, calit)== TRUE) {
          log_err("FAIL: Error. equivalentTo test failed\n");
      } else {
          log_verbose("PASS: equivalentTo test passed\n");
      }
    }
    

    /*Testing the current time and date using ucal_getnow()*/
    log_verbose("\nTesting the ucal_getNow function to check if it is fetching tbe current time\n");
    now=ucal_getNow();
    /* open the date format and format the date to check the output */
    datdef=udat_open(UDAT_FULL,UDAT_FULL ,NULL, NULL, 0,NULL,0,&status);
    if(U_FAILURE(status)){
        log_err("FAIL: error in creating the dateformat : %s\n", u_errorName(status));
        return;
    }
    log_verbose("PASS: The current date and time fetched is %s\n", u_austrcpy(tempMsgBuf, myDateFormat(datdef, now)) );
    
    
    /*Testing the TimeZoneDisplayName */
    log_verbose("\nTesting the fetching of time zone display name\n");
    /*for the US locale */
    resultlength=0;
    resultlengthneeded=ucal_getTimeZoneDisplayName(caldef, UCAL_DST, "en_US", NULL, resultlength, &status);
    
    if(status==U_BUFFER_OVERFLOW_ERROR)
    {
        status=U_ZERO_ERROR;
        resultlength=resultlengthneeded+1;
        result=(UChar*)malloc(sizeof(UChar) * resultlength);
        ucal_getTimeZoneDisplayName(caldef, UCAL_DST, "en_US", result, resultlength, &status);
    }
    if(U_FAILURE(status))    {
        log_err("FAIL: Error in getting the timezone display name : %s\n", u_errorName(status));
    }
    else{    
        log_verbose("PASS: getting the time zone display name successful : %s, %d needed \n",
            u_errorName(status), resultlengthneeded);
    }
    

#define expectPDT "Pacific Daylight Time"

    tzdname=(UChar*)malloc(sizeof(UChar) * (sizeof(expectPDT)+1));
    u_uastrcpy(tzdname, expectPDT);
    if(u_strcmp(tzdname, result)==0){
        log_verbose("PASS: got the correct time zone display name %s\n", u_austrcpy(tempMsgBuf, result) );
    }
    else{
        log_err("FAIL: got the wrong time zone(DST) display name %s, wanted %s\n", austrdup(result) , expectPDT);
    }
    
    ucal_getTimeZoneDisplayName(caldef, UCAL_SHORT_DST, "en_US", result, resultlength, &status);
    u_uastrcpy(tzdname, "PDT");
    if(u_strcmp(tzdname, result) != 0){
        log_err("FAIL: got the wrong time zone(SHORT_DST) display name %s, wanted %s\n", austrdup(result), austrdup(tzdname));
    }

    ucal_getTimeZoneDisplayName(caldef, UCAL_STANDARD, "en_US", result, resultlength, &status);
    u_uastrcpy(tzdname, "Pacific Standard Time");
    if(u_strcmp(tzdname, result) != 0){
        log_err("FAIL: got the wrong time zone(STANDARD) display name %s, wanted %s\n", austrdup(result), austrdup(tzdname));
    }

    ucal_getTimeZoneDisplayName(caldef, UCAL_SHORT_STANDARD, "en_US", result, resultlength, &status);
    u_uastrcpy(tzdname, "PST");
    if(u_strcmp(tzdname, result) != 0){
        log_err("FAIL: got the wrong time zone(SHORT_STANDARD) display name %s, wanted %s\n", austrdup(result), austrdup(tzdname));
    }
    
    
    /*testing the setAttributes and getAttributes of a UCalendar*/
    log_verbose("\nTesting the getAttributes and set Attributes\n");
    count=ucal_getAttribute(calit, UCAL_LENIENT);
    count2=ucal_getAttribute(calfr, UCAL_LENIENT);
    ucal_setAttribute(calit, UCAL_LENIENT, 0);
    ucal_setAttribute(caldef, UCAL_LENIENT, count2);
    if( ucal_getAttribute(calit, UCAL_LENIENT) !=0 || 
        ucal_getAttribute(calfr, UCAL_LENIENT)!=ucal_getAttribute(caldef, UCAL_LENIENT) )
        log_err("FAIL: there is an error in getAttributes or setAttributes\n");
    else
        log_verbose("PASS: attribute set and got successfully\n");
        /*set it back to orginal value */
    log_verbose("Setting it back to normal\n");
    ucal_setAttribute(calit, UCAL_LENIENT, count);
    if(ucal_getAttribute(calit, UCAL_LENIENT)!=count)
        log_err("FAIL: Error in setting the attribute back to normal\n");
    
    /*setting the first day of the week to other values  */
    count=ucal_getAttribute(calit, UCAL_FIRST_DAY_OF_WEEK);
    for (i=1; i<=7; ++i) {
        ucal_setAttribute(calit, UCAL_FIRST_DAY_OF_WEEK,i);
        if (ucal_getAttribute(calit, UCAL_FIRST_DAY_OF_WEEK) != i) 
            log_err("FAIL: set/getFirstDayOfWeek failed\n");
    }
    /*get bogus Attribute*/
    count=ucal_getAttribute(calit, (UCalendarAttribute)99); /* BOGUS_ATTRIBUTE */
    if(count != -1){
        log_err("FAIL: get/bogus attribute should return -1\n");
    }

    /*set it back to normal */
    ucal_setAttribute(calit, UCAL_FIRST_DAY_OF_WEEK,count);
    /*setting minimal days of the week to other values */
    count=ucal_getAttribute(calit, UCAL_MINIMAL_DAYS_IN_FIRST_WEEK);
    for (i=1; i<=7; ++i) {
        ucal_setAttribute(calit, UCAL_MINIMAL_DAYS_IN_FIRST_WEEK,i);
        if (ucal_getAttribute(calit, UCAL_MINIMAL_DAYS_IN_FIRST_WEEK) != i) 
            log_err("FAIL: set/getMinimalDaysInFirstWeek failed\n");
    }
    /*set it back to normal */
    ucal_setAttribute(calit, UCAL_MINIMAL_DAYS_IN_FIRST_WEEK,count);
    
    
    /*testing if the UCalendar's timezone is currently in day light saving's time*/
    log_verbose("\nTesting if the UCalendar is currently in daylight saving's time\n");
    ucal_setDateTime(caldef, 1999, UCAL_MARCH, 3, 10, 45, 20, &status); 
    ucal_inDaylightTime(caldef, &status );
    if(U_FAILURE(status))    {
        log_err("Error in ucal_inDaylightTime: %s\n", u_errorName(status));
    }
    if(!ucal_inDaylightTime(caldef, &status))
        log_verbose("PASS: It is  not in daylight saving's time\n");
    else
        log_err("FAIL: It is not in daylight saving's time\n");

    
    /*closing the UCalendar*/
    ucal_close(caldef);
    ucal_close(caldef2);
    ucal_close(calfr);
    ucal_close(calit);
    /*closing the UDateFormat used */
    udat_close(datdef);
    free(tzID);
    free(result);
    free(tzdname);
}

/*------------------------------------------------------*/
/*Testing the getMillis, setMillis, setDate and setDateTime functions extensively*/

static void TestGetSetDateAPI()
{
    UCalendar *caldef = 0, *caldef2 = 0;
    UChar *tzID =0;
    UDate d1;
    int32_t hour;
    int32_t zoneOffset;
    UDateFormat *datdef = 0;
    UErrorCode status=U_ZERO_ERROR;
    UDate d2= 837039928046.0;
    UChar temp[30];

    log_verbose("\nOpening the calendars()\n");
    tzID=(UChar*)malloc(sizeof(UChar) * 4);
    u_strcpy(tzID, fgGMTID);
    /*open the calendars used */
    caldef=ucal_open(tzID, u_strlen(tzID), "en_US", UCAL_TRADITIONAL, &status);
    caldef2=ucal_open(tzID, u_strlen(tzID), "en_US", UCAL_TRADITIONAL, &status);
    /*open the dateformat */
    /* this is supposed to open default date format, but later on it treats it like it is "en_US" 
       - very bad if you try to run the tests on machine where default locale is NOT "en_US" */
    /*datdef=udat_open(UDAT_DEFAULT,UDAT_DEFAULT ,NULL,fgGMTID,-1, &status);*/
    datdef=udat_open(UDAT_DEFAULT,UDAT_DEFAULT ,"en_US",fgGMTID,-1,NULL,0, &status);
    if(U_FAILURE(status))
    {
        log_err("error in creating the dateformat : %s\n", u_errorName(status));
        return;
    }
    

    /*Testing getMillis and setMillis */
    log_verbose("\nTesting the date and time fetched in millis for a calendar using getMillis\n");
    d1=ucal_getMillis(caldef, &status);
    if(U_FAILURE(status)){
        log_err("Error in getMillis : %s\n", u_errorName(status));
    }
    
    /*testing setMillis */
    log_verbose("\nTesting the set date and time function using setMillis\n");
    ucal_setMillis(caldef, d2, &status);
    if(U_FAILURE(status)){
        log_err("Error in setMillis : %s\n", u_errorName(status));
    }

    /*testing if the calendar date is set properly or not  */
    d1=ucal_getMillis(caldef, &status);
    if(u_strcmp(myDateFormat(datdef, d1), myDateFormat(datdef, d2))!=0)
        log_err("error in setMillis or getMillis\n");
    /*-------------------*/
    
    
    ctest_setTimeZone(NULL, &status);

    /*testing ucal_setTimeZone() function*/
    log_verbose("\nTesting if the function ucal_setTimeZone() works fine\n");
    ucal_setMillis(caldef2, d2, &status); 
    if(U_FAILURE(status)){
        log_err("Error in getMillis : %s\n", u_errorName(status));;
    }
    hour=ucal_get(caldef2, UCAL_HOUR_OF_DAY, &status);
        
    u_uastrcpy(tzID, "PST");
    ucal_setTimeZone(caldef2,tzID, 3, &status);
    if(U_FAILURE(status)){
        log_err("Error in setting the time zone using ucal_setTimeZone(): %s\n", u_errorName(status));
    }
    else
        log_verbose("ucal_setTimeZone worked fine\n");
    if(hour == ucal_get(caldef2, UCAL_HOUR_OF_DAY, &status))
        log_err("FAIL: Error setting the time zone doesn't change the represented time\n");
    else if((hour-8 + 1) != ucal_get(caldef2, UCAL_HOUR_OF_DAY, &status)) /*because it is not in daylight savings time */
        log_err("FAIL: Error setTimeZone doesn't change the represented time correctly with 8 hour offset\n");
    else
        log_verbose("PASS: setTimeZone works fine\n");
        
    /*testing setTimeZone roundtrip */
    log_verbose("\nTesting setTimeZone() roundtrip\n");
    u_strcpy(tzID, fgGMTID);
    ucal_setTimeZone(caldef2, tzID, 3, &status);
    if(U_FAILURE(status)){
        log_err("Error in setting the time zone using ucal_setTimeZone(): %s\n", u_errorName(status));
    }
    if(d2==ucal_getMillis(caldef2, &status))
        log_verbose("PASS: setTimeZone roundtrip test passed\n");
    else
        log_err("FAIL: setTimeZone roundtrip test failed\n");

    zoneOffset = ucal_get(caldef2, UCAL_ZONE_OFFSET, &status);
    if(U_FAILURE(status)){
        log_err("Error in getting the time zone using ucal_get() after using ucal_setTimeZone(): %s\n", u_errorName(status));
    }
    else if (zoneOffset != 0) {
        log_err("Error in getting the time zone using ucal_get() after using ucal_setTimeZone() offset=%d\n", zoneOffset);
    }

    ucal_setTimeZone(caldef2, NULL, -1, &status);
    if(U_FAILURE(status)){
        log_err("Error in setting the time zone using ucal_setTimeZone(): %s\n", u_errorName(status));
    }
    if(ucal_getMillis(caldef2, &status))
        log_verbose("PASS: setTimeZone roundtrip test passed\n");
    else
        log_err("FAIL: setTimeZone roundtrip test failed\n");

    zoneOffset = ucal_get(caldef2, UCAL_ZONE_OFFSET, &status);
    if(U_FAILURE(status)){
        log_err("Error in getting the time zone using ucal_get() after using ucal_setTimeZone(): %s\n", u_errorName(status));
    }
    else if (zoneOffset != -28800000) {
        log_err("Error in getting the time zone using ucal_get() after using ucal_setTimeZone() offset=%d\n", zoneOffset);
    }

    ctest_resetTimeZone();

/*----------------------------*     */
    
    
    /*Testing  if setDate works fine  */
    log_verbose("\nTesting the ucal_setDate() function \n");
    u_uastrcpy(temp, "Dec 17, 1971 11:05:28 PM");
    ucal_setDate(caldef,1971, UCAL_DECEMBER, 17, &status);
    if(U_FAILURE(status)){
        log_err("error in setting the calendar date : %s\n", u_errorName(status));
    }
    /*checking if the calendar date is set properly or not  */
    d1=ucal_getMillis(caldef, &status);
    if(u_strcmp(myDateFormat(datdef, d1), temp)==0)
        log_verbose("PASS:setDate works fine\n");
    else
        log_err("FAIL:Error in setDate()\n");

    
    /* Testing setDate Extensively with various input values */
    log_verbose("\nTesting ucal_setDate() extensively\n");
    ucal_setDate(caldef, 1999, UCAL_JANUARY, 10, &status);
    verify1("1999  10th day of January  is :", caldef, datdef, 1999, UCAL_JANUARY, 10);
    ucal_setDate(caldef, 1999, UCAL_DECEMBER, 3, &status);
    verify1("1999 3rd day of December  is :", caldef, datdef, 1999, UCAL_DECEMBER, 3);
    ucal_setDate(caldef, 2000, UCAL_MAY, 3, &status);
    verify1("2000 3rd day of May is :", caldef, datdef, 2000, UCAL_MAY, 3);
    ucal_setDate(caldef, 1999, UCAL_AUGUST, 32, &status);
    verify1("1999 32th day of August is :", caldef, datdef, 1999, UCAL_SEPTEMBER, 1);
    ucal_setDate(caldef, 1999, UCAL_MARCH, 0, &status); 
    verify1("1999 0th day of March is :", caldef, datdef, 1999, UCAL_FEBRUARY, 28);
    ucal_setDate(caldef, 0, UCAL_MARCH, 12, &status);
    
    /*--------------------*/

    /*Testing if setDateTime works fine */
    log_verbose("\nTesting the ucal_setDateTime() function \n");
    u_uastrcpy(temp, "May 3, 1972 4:30:42 PM");
    ucal_setDateTime(caldef,1972, UCAL_MAY, 3, 16, 30, 42, &status);
    if(U_FAILURE(status)){
        log_err("error in setting the calendar date : %s\n", u_errorName(status));
    }
    /*checking  if the calendar date is set properly or not  */
    d1=ucal_getMillis(caldef, &status);
    if(u_strcmp(myDateFormat(datdef, d1), temp)==0)
        log_verbose("PASS: setDateTime works fine\n");
    else
        log_err("FAIL: Error in setDateTime\n");

    
    /*Testing setDateTime extensively with various input values*/
    log_verbose("\nTesting ucal_setDateTime() function extensively\n");
    ucal_setDateTime(caldef, 1999, UCAL_OCTOBER, 10, 6, 45, 30, &status);
    verify2("1999  10th day of October  at 6:45:30 is :", caldef, datdef, 1999, UCAL_OCTOBER, 10, 6, 45, 30, 0 );
    ucal_setDateTime(caldef, 1999, UCAL_MARCH, 3, 15, 10, 55, &status);
    verify2("1999 3rd day of March   at 15:10:55 is :", caldef, datdef, 1999, UCAL_MARCH, 3, 3, 10, 55, 1);
    ucal_setDateTime(caldef, 1999, UCAL_MAY, 3, 25, 30, 45, &status);
    verify2("1999 3rd day of May at 25:30:45 is :", caldef, datdef, 1999, UCAL_MAY, 4, 1, 30, 45, 0);
    ucal_setDateTime(caldef, 1999, UCAL_AUGUST, 32, 22, 65, 40, &status);
    verify2("1999 32th day of August at 22:65:40 is :", caldef, datdef, 1999, UCAL_SEPTEMBER, 1, 11, 5, 40,1);
    ucal_setDateTime(caldef, 1999, UCAL_MARCH, 12, 0, 0, 0,&status);
    verify2("1999 12th day of March at 0:0:0 is :", caldef, datdef, 1999, UCAL_MARCH, 12, 0, 0, 0, 0);
    ucal_setDateTime(caldef, 1999, UCAL_MARCH, 12, -10, -10,0, &status);
    verify2("1999 12th day of March is at -10:-10:0 :", caldef, datdef, 1999, UCAL_MARCH, 11, 1, 50, 0, 1);
    
    
    /*close caldef and datdef*/
    ucal_close(caldef);
    ucal_close(caldef2);
    udat_close(datdef);
    free(tzID);

}

/*----------------------------------------------------------- */
/**
 * Confirm the functioning of the calendar field related functions.
 */
static void TestFieldGetSet()
{
    UCalendar *cal = 0;
    UChar *tzID = 0;
    UDateFormat *datdef = 0;
    UDate d1;
    UErrorCode status=U_ZERO_ERROR;
    log_verbose("\nFetching pointer to UCalendar using the ucal_open()\n");
    tzID=(UChar*)malloc(sizeof(UChar) * 4);
    u_strcpy(tzID, fgGMTID);
    /*open the calendar used */
    cal=ucal_open(tzID, u_strlen(tzID), "en_US", UCAL_TRADITIONAL, &status);
    if (U_FAILURE(status)) {
        log_err("ucal_open failed: %s\n", u_errorName(status));
        return; 
    }
    datdef=udat_open(UDAT_SHORT,UDAT_SHORT ,NULL,fgGMTID,-1,NULL, 0, &status);
    if(U_FAILURE(status))
    {
        log_err("error in creating the dateformat : %s\n", u_errorName(status));
    }
    
    /*Testing ucal_get()*/
    log_verbose("\nTesting the ucal_get() function of Calendar\n");
    ucal_setDateTime(cal, 1999, UCAL_MARCH, 12, 5, 25, 30, &status);
    if(U_FAILURE(status)){
        log_err("error in the setDateTime() : %s\n", u_errorName(status));
    }
    if(ucal_get(cal, UCAL_YEAR, &status)!=1999 || ucal_get(cal, UCAL_MONTH, &status)!=2 || 
        ucal_get(cal, UCAL_DATE, &status)!=12 || ucal_get(cal, UCAL_HOUR, &status)!=5)
        log_err("error in ucal_get()\n");    
    else if(ucal_get(cal, UCAL_DAY_OF_WEEK_IN_MONTH, &status)!=2 || ucal_get(cal, UCAL_DAY_OF_WEEK, &status)!=6
        || ucal_get(cal, UCAL_WEEK_OF_MONTH, &status)!=2 || ucal_get(cal, UCAL_WEEK_OF_YEAR, &status)!= 11)
        log_err("FAIL: error in ucal_get()\n");
    else
        log_verbose("PASS: ucal_get() works fine\n");

    /*Testing the ucal_set() , ucal_clear() functions of calendar*/
    log_verbose("\nTesting the set, and clear  field functions of calendar\n");
    ucal_setAttribute(cal, UCAL_LENIENT, 0);
    ucal_clear(cal);
    ucal_set(cal, UCAL_YEAR, 1997);
    ucal_set(cal, UCAL_MONTH, UCAL_JUNE);
    ucal_set(cal, UCAL_DATE, 3);
    verify1("1997 third day of June = ", cal, datdef, 1997, UCAL_JUNE, 3);
    ucal_clear(cal);
    ucal_set(cal, UCAL_YEAR, 1997);
    ucal_set(cal, UCAL_DAY_OF_WEEK, UCAL_TUESDAY);
    ucal_set(cal, UCAL_MONTH, UCAL_JUNE);
    ucal_set(cal, UCAL_DAY_OF_WEEK_IN_MONTH, 1);
    verify1("1997 first Tuesday in June = ", cal, datdef, 1997, UCAL_JUNE, 3);
    ucal_clear(cal);
    ucal_set(cal, UCAL_YEAR, 1997);
    ucal_set(cal, UCAL_DAY_OF_WEEK, UCAL_TUESDAY);
    ucal_set(cal, UCAL_MONTH, UCAL_JUNE);
    ucal_set(cal, UCAL_DAY_OF_WEEK_IN_MONTH, - 1);
    verify1("1997 last Tuesday in June = ", cal, datdef,1997,   UCAL_JUNE, 24);
    /*give undesirable input    */
    status = U_ZERO_ERROR;
        ucal_clear(cal);
        ucal_set(cal, UCAL_YEAR, 1997);
        ucal_set(cal, UCAL_DAY_OF_WEEK, UCAL_TUESDAY);
        ucal_set(cal, UCAL_MONTH, UCAL_JUNE);
        ucal_set(cal, UCAL_DAY_OF_WEEK_IN_MONTH, 0);
        d1=ucal_getMillis(cal,&status);
        if (status != U_ILLEGAL_ARGUMENT_ERROR){ 
            log_err("FAIL: No IllegalArgumentError for :");
            log_err("1997 zero-th Tuesday in June \n");
        }
        else 
            log_verbose("PASS: IllegalArgumentError as expected\n");
   
    ucal_clear(cal);
    ucal_set(cal, UCAL_YEAR, 1997);
    ucal_set(cal, UCAL_DAY_OF_WEEK, UCAL_TUESDAY);
    ucal_set(cal, UCAL_MONTH, UCAL_JUNE);
    ucal_set(cal, UCAL_WEEK_OF_MONTH, 1);
    verify1("1997 Tuesday in week 1 of June = ", cal,datdef, 1997, UCAL_JUNE, 3);
    ucal_clear(cal);
    ucal_set(cal, UCAL_YEAR, 1997);
    ucal_set(cal, UCAL_DAY_OF_WEEK, UCAL_TUESDAY);
    ucal_set(cal, UCAL_MONTH, UCAL_JUNE);
    ucal_set(cal, UCAL_WEEK_OF_MONTH, 5);
    verify1("1997 Tuesday in week 5 of June = ", cal,datdef, 1997, UCAL_JULY, 1);
    status = U_ZERO_ERROR;
    ucal_clear(cal);
    ucal_set(cal, UCAL_YEAR, 1997);
    ucal_set(cal, UCAL_DAY_OF_WEEK, UCAL_TUESDAY);
    ucal_set(cal, UCAL_MONTH, UCAL_JUNE);
    ucal_set(cal, UCAL_WEEK_OF_MONTH, 0);
    verify1("1997 Tuesday in week 0 of June = ", cal, datdef , 1997, UCAL_MAY, 27);
    ucal_clear(cal);
    ucal_set(cal, UCAL_YEAR_WOY, 1997);
    ucal_set(cal, UCAL_DAY_OF_WEEK, UCAL_TUESDAY);
    ucal_set(cal, UCAL_WEEK_OF_YEAR, 1);
    verify1("1997 Tuesday in week 1 of year = ", cal, datdef,1996, UCAL_DECEMBER, 31);
    ucal_clear(cal);
    ucal_set(cal, UCAL_YEAR, 1997);
    ucal_set(cal, UCAL_DAY_OF_WEEK, UCAL_TUESDAY);
    ucal_set(cal, UCAL_WEEK_OF_YEAR, 10);
    verify1("1997 Tuesday in week 10 of year = ", cal,datdef, 1997, UCAL_MARCH, 4);
    ucal_clear(cal);
    ucal_set(cal, UCAL_YEAR, 1999);
    ucal_set(cal, UCAL_DAY_OF_YEAR, 1);
    verify1("1999 1st day of the year =", cal, datdef, 1999, UCAL_JANUARY, 1);
    ucal_set(cal, UCAL_MONTH, -3);
    d1=ucal_getMillis(cal,&status);
        if (status != U_ILLEGAL_ARGUMENT_ERROR){ 
            log_err("FAIL: No IllegalArgumentError for :\"1999 -3th month \" ");
        }
        else 
            log_verbose("PASS: IllegalArgumentError as expected\n");
    
    ucal_setAttribute(cal, UCAL_LENIENT, 1);
    
    ucal_set(cal, UCAL_MONTH, -3);
    verify1("1999 -3th month should be", cal, datdef, 1998, UCAL_OCTOBER, 1);


    /*testing isSet and clearField()*/
    if(!ucal_isSet(cal, UCAL_WEEK_OF_YEAR))
        log_err("FAIL: error in isSet\n");
    else
        log_verbose("PASS: isSet working fine\n");
    ucal_clearField(cal, UCAL_WEEK_OF_YEAR);
    if(ucal_isSet(cal, UCAL_WEEK_OF_YEAR))
        log_err("FAIL: there is an error in clearField or isSet\n");
    else
        log_verbose("PASS :clearField working fine\n");

    /*-------------------------------*/

    ucal_close(cal);
    udat_close(datdef);
    free(tzID);
    
}
 

/* ------------------------------------- */
/**
 * Execute adding and rolling in Calendar extensively,
 */
static void TestAddRollExtensive()
{
    UCalendar *cal = 0;
    int32_t i,limit;
    UChar* tzID = 0;
    UCalendarDateFields e;
    int32_t y,m,d,hr,min,sec,ms;
    int32_t maxlimit = 40;
    UErrorCode status = U_ZERO_ERROR;
    y = 1997; m = UCAL_FEBRUARY; d = 1; hr = 1; min = 1; sec = 0; ms = 0;
   
    log_verbose("Testing add and roll extensively\n");
    
    tzID=(UChar*)malloc(sizeof(UChar) * 4);
    u_uastrcpy(tzID, "PST");
    /*open the calendar used */
    cal=ucal_open(tzID, u_strlen(tzID), "en_US", UCAL_GREGORIAN, &status);;
    if (U_FAILURE(status)) {
        log_err("ucal_open() failed : %s\n", u_errorName(status)); 
        return; 
    }

    ucal_set(cal, UCAL_YEAR, y);
    ucal_set(cal, UCAL_MONTH, m);
    ucal_set(cal, UCAL_DATE, d);

    /* Confirm that adding to various fields works.*/
    log_verbose("\nTesting to confirm that adding to various fields works with ucal_add()\n");
    checkDate(cal, y, m, d);
    ucal_add(cal,UCAL_YEAR, 1, &status);
    if (U_FAILURE(status)) { log_err("ucal_add failed: %s\n", u_errorName(status)); return; }
    y++;
    checkDate(cal, y, m, d);
    ucal_add(cal,UCAL_MONTH, 12, &status);
    if (U_FAILURE(status)) { log_err("ucal_add failed: %s\n", u_errorName(status) ); return; }
    y+=1;
    checkDate(cal, y, m, d);
    ucal_add(cal,UCAL_DATE, 1, &status);
    if (U_FAILURE(status)) { log_err("ucal_add failed: %s\n", u_errorName(status) ); return; }
    d++;
    checkDate(cal, y, m, d);
    ucal_add(cal,UCAL_DATE, 2, &status);
    if (U_FAILURE(status)) { log_err("ucal_add failed: %s\n", u_errorName(status) ); return; }
    d += 2;
    checkDate(cal, y, m, d);
    ucal_add(cal,UCAL_DATE, 28, &status);
    if (U_FAILURE(status)) { log_err("ucal_add failed: %s\n", u_errorName(status) ); return; }
    ++m;
    checkDate(cal, y, m, d);
    ucal_add(cal, (UCalendarDateFields)-1, 10, &status);
    if(status==U_ILLEGAL_ARGUMENT_ERROR)
        log_verbose("Pass: Illegal argument error as expected\n");
    else{
        log_err("Fail: No, illegal argument error as expected. Got....: %s\n", u_errorName(status));
    }
    status=U_ZERO_ERROR;
    

    /*confirm that applying roll to various fields works fine*/
    log_verbose("\nTesting to confirm that ucal_roll() works\n");
    ucal_roll(cal, UCAL_DATE, -1, &status);
    if (U_FAILURE(status)) { log_err("ucal_roll failed: %s\n", u_errorName(status) ); return; }
    d -=1;
    checkDate(cal, y, m, d);
    ucal_roll(cal, UCAL_MONTH, -2, &status);
    if (U_FAILURE(status)) { log_err("ucal_roll failed: %s\n", u_errorName(status) ); return; }
    m -=2;
    checkDate(cal, y, m, d);
    ucal_roll(cal, UCAL_DATE, 1, &status);
    if (U_FAILURE(status)) { log_err("ucal_roll failed: %s\n", u_errorName(status) ); return; }
    d +=1;
    checkDate(cal, y, m, d);
    ucal_roll(cal, UCAL_MONTH, -12, &status);
    if (U_FAILURE(status)) { log_err("ucal_roll failed: %s\n", u_errorName(status) ); return; }
    checkDate(cal, y, m, d);
    ucal_roll(cal, UCAL_YEAR, -1, &status);
    if (U_FAILURE(status)) { log_err("ucal_roll failed: %s\n", u_errorName(status) ); return; }
    y -=1;
    checkDate(cal, y, m, d);
    ucal_roll(cal, UCAL_DATE, 29, &status);
    if (U_FAILURE(status)) { log_err("ucal_roll failed: %s\n", u_errorName(status) ); return; }
    d = 2;
    checkDate(cal, y, m, d);
    ucal_roll(cal, (UCalendarDateFields)-1, 10, &status);
    if(status==U_ILLEGAL_ARGUMENT_ERROR)
        log_verbose("Pass: illegal arguement error as expected\n");
    else{
        log_err("Fail: no illegal argument error got..: %s\n", u_errorName(status));
        return;
    }
    status=U_ZERO_ERROR;
    ucal_clear(cal);
    ucal_setDateTime(cal, 1999, UCAL_FEBRUARY, 28, 10, 30, 45,  &status);
    if(U_FAILURE(status)){
        log_err("error is setting the datetime: %s\n", u_errorName(status));
    }
    ucal_add(cal, UCAL_MONTH, 1, &status);
    checkDate(cal, 1999, UCAL_MARCH, 28);
    ucal_add(cal, UCAL_MILLISECOND, 1000, &status);
    checkDateTime(cal, 1999, UCAL_MARCH, 28, 10, 30, 46, 0, UCAL_MILLISECOND);

    ucal_close(cal);
/*--------------- */
    status=U_ZERO_ERROR;
    /* Testing add and roll extensively */
    log_verbose("\nTesting the ucal_add() and ucal_roll() functions extensively\n");
    y = 1997; m = UCAL_FEBRUARY; d = 1; hr = 1; min = 1; sec = 0; ms = 0;
    cal=ucal_open(tzID, u_strlen(tzID), "en_US", UCAL_TRADITIONAL, &status);
    if (U_FAILURE(status)) {
        log_err("ucal_open failed: %s\n", u_errorName(status));
        return; 
    }
    ucal_set(cal, UCAL_YEAR, y);
    ucal_set(cal, UCAL_MONTH, m);
    ucal_set(cal, UCAL_DATE, d);
    ucal_set(cal, UCAL_HOUR, hr);
    ucal_set(cal, UCAL_MINUTE, min);
    ucal_set(cal, UCAL_SECOND,sec);
    ucal_set(cal, UCAL_MILLISECOND, ms);
    status=U_ZERO_ERROR;

    log_verbose("\nTesting UCalendar add...\n");
    for(e = UCAL_YEAR;e < UCAL_FIELD_COUNT; e=(UCalendarDateFields)((int32_t)e + 1)) {
        limit = maxlimit;
        status = U_ZERO_ERROR;
        for (i = 0; i < limit; i++) {
            ucal_add(cal, e, 1, &status);
            if (U_FAILURE(status)) { limit = i; status = U_ZERO_ERROR; }
        }
        for (i = 0; i < limit; i++) {
            ucal_add(cal, e, -1, &status);
            if (U_FAILURE(status)) { 
                log_err("ucal_add -1 failed: %s\n", u_errorName(status));
                return; 
            }
        }
        checkDateTime(cal, y, m, d, hr, min, sec, ms, e);
    }
    log_verbose("\nTesting calendar ucal_roll()...\n");
    for(e = UCAL_YEAR;e < UCAL_FIELD_COUNT; e=(UCalendarDateFields)((int32_t)e + 1)) {
        limit = maxlimit;
        status = U_ZERO_ERROR;
        for (i = 0; i < limit; i++) {
            ucal_roll(cal, e, 1, &status);
            if (U_FAILURE(status)) {
                limit = i;
                status = U_ZERO_ERROR;
            }
        }
        for (i = 0; i < limit; i++) {
            ucal_roll(cal, e, -1, &status);
            if (U_FAILURE(status)) { 
                log_err("ucal_roll -1 failed: %s\n", u_errorName(status));
                return; 
            }
        }
        checkDateTime(cal, y, m, d, hr, min, sec, ms, e);
    }

    ucal_close(cal);
    free(tzID);
}

/*------------------------------------------------------ */
/*Testing the Limits for various Fields of Calendar*/
static void TestGetLimits()
{
    UCalendar *cal = 0;
    int32_t min, max, gr_min, le_max, ac_min, ac_max, val;
    UChar* tzID = 0;
    UErrorCode status = U_ZERO_ERROR;
    
    
    tzID=(UChar*)malloc(sizeof(UChar) * 4);
    u_uastrcpy(tzID, "PST");
    /*open the calendar used */
    cal=ucal_open(tzID, u_strlen(tzID), "en_US", UCAL_GREGORIAN, &status);;
    if (U_FAILURE(status)) {
        log_err("ucal_open() for gregorian calendar failed in TestGetLimits: %s\n", u_errorName(status));
        return; 
    }
    
    log_verbose("\nTesting the getLimits function for various fields\n");
    
    
    ucal_setDate(cal, 1999, UCAL_MARCH, 5, &status); /* Set the date to be March 5, 1999 */
    val = ucal_get(cal, UCAL_DAY_OF_WEEK, &status);
    min = ucal_getLimit(cal, UCAL_DAY_OF_WEEK, UCAL_MINIMUM, &status);
    max = ucal_getLimit(cal, UCAL_DAY_OF_WEEK, UCAL_MAXIMUM, &status);
    if ( (min != UCAL_SUNDAY || max != UCAL_SATURDAY ) && (min > val && val > max)  && (val != UCAL_FRIDAY)){
           log_err("FAIL: Min/max bad\n");
           log_err("FAIL: Day of week %d out of range\n", val);
           log_err("FAIL: FAIL: Day of week should be SUNDAY Got %d\n", val);
    }
    else
        log_verbose("getLimits successful\n");

    val = ucal_get(cal, UCAL_DAY_OF_WEEK_IN_MONTH, &status);
    min = ucal_getLimit(cal, UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_MINIMUM, &status);
    max = ucal_getLimit(cal, UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_MAXIMUM, &status);
    if ( (min != 0 || max != 5 ) && (min > val && val > max)  && (val != 1)){
           log_err("FAIL: Min/max bad\n");
           log_err("FAIL: Day of week in month %d out of range\n", val);
           log_err("FAIL: FAIL: Day of week in month should be SUNDAY Got %d\n", val);
        
    }
    else
        log_verbose("getLimits successful\n");
    
    min=ucal_getLimit(cal, UCAL_MONTH, UCAL_MINIMUM, &status);
    max=ucal_getLimit(cal, UCAL_MONTH, UCAL_MAXIMUM, &status);
    gr_min=ucal_getLimit(cal, UCAL_MONTH, UCAL_GREATEST_MINIMUM, &status);
    le_max=ucal_getLimit(cal, UCAL_MONTH, UCAL_LEAST_MAXIMUM, &status);
    ac_min=ucal_getLimit(cal, UCAL_MONTH, UCAL_ACTUAL_MINIMUM, &status);
    ac_max=ucal_getLimit(cal, UCAL_MONTH, UCAL_ACTUAL_MAXIMUM, &status);
    if(U_FAILURE(status)){
        log_err("Error in getLimits: %s\n", u_errorName(status));
    }
    if(min!=0 || max!=11 || gr_min!=0 || le_max!=11 || ac_min!=0 || ac_max!=11)
        log_err("There is and error in getLimits in fetching the values\n");
    else
        log_verbose("getLimits successful\n");

    ucal_setDateTime(cal, 1999, UCAL_MARCH, 5, 4, 10, 35, &status);
    val=ucal_get(cal, UCAL_HOUR_OF_DAY, &status);
    min=ucal_getLimit(cal, UCAL_HOUR_OF_DAY, UCAL_MINIMUM, &status);
    max=ucal_getLimit(cal, UCAL_HOUR_OF_DAY, UCAL_MAXIMUM, &status);
    gr_min=ucal_getLimit(cal, UCAL_MINUTE, UCAL_GREATEST_MINIMUM, &status);
    le_max=ucal_getLimit(cal, UCAL_MINUTE, UCAL_LEAST_MAXIMUM, &status);
    ac_min=ucal_getLimit(cal, UCAL_MINUTE, UCAL_ACTUAL_MINIMUM, &status);
    ac_max=ucal_getLimit(cal, UCAL_SECOND, UCAL_ACTUAL_MAXIMUM, &status);
    if( (min!=0 || max!= 11 || gr_min!=0 || le_max!=60 || ac_min!=0 || ac_max!=60) &&
        (min>val && val>max) && val!=4){
                
        log_err("FAIL: Min/max bad\n");
        log_err("FAIL: Hour of Day %d out of range\n", val);
        log_err("FAIL: HOUR_OF_DAY should be 4 Got %d\n", val);
    }
    else
        log_verbose("getLimits successful\n");    

    
    /*get BOGUS_LIMIT type*/
    val=ucal_getLimit(cal, UCAL_SECOND, (UCalendarLimitType)99, &status);
    if(val != -1){
        log_err("FAIL: ucal_getLimit() with BOGUS type should return -1\n");
    }
    status=U_ZERO_ERROR;


    ucal_close(cal);
    free(tzID);
}


/* ------------------------------------- */
 
/**
 * Test that the days of the week progress properly when add is called repeatedly
 * for increments of 24 days.
 */
static void TestDOWProgression()
{
    int32_t initialDOW, DOW, newDOW, expectedDOW;
    UCalendar *cal = 0;
    UDateFormat *datfor = 0;
    UDate date1;
    int32_t delta=24;
    UErrorCode status = U_ZERO_ERROR;
    UChar* tzID = 0;
    char tempMsgBuf[256];
    tzID=(UChar*)malloc(sizeof(UChar) * 4);
    u_strcpy(tzID, fgGMTID);
    /*open the calendar used */
    cal=ucal_open(tzID, u_strlen(tzID), "en_US", UCAL_TRADITIONAL, &status);;
    if (U_FAILURE(status)) {
        log_err("ucal_open failed: %s\n", u_errorName(status));
        return; 
    }

    datfor=udat_open(UDAT_MEDIUM,UDAT_MEDIUM ,NULL, fgGMTID,-1,NULL, 0, &status);
    if(U_FAILURE(status)){
        log_err("error in creating the dateformat : %s\n", u_errorName(status));
    }
    

    ucal_setDate(cal, 1999, UCAL_JANUARY, 1, &status);

    log_verbose("\nTesting the DOW progression\n");
    
    initialDOW = ucal_get(cal, UCAL_DAY_OF_WEEK, &status);
    if (U_FAILURE(status)) { log_err("ucal_get() failed: %s\n", u_errorName(status) ); return; }
    newDOW = initialDOW;
    do {
        DOW = newDOW;
        log_verbose("DOW = %d...\n", DOW);
        date1=ucal_getMillis(cal, &status);
        if(U_FAILURE(status)){ log_err("ucal_getMiilis() failed: %s\n", u_errorName(status)); return;}
        log_verbose("%s\n", u_austrcpy(tempMsgBuf, myDateFormat(datfor, date1)));
        
        ucal_add(cal,UCAL_DAY_OF_WEEK, delta, &status);
        if (U_FAILURE(status)) { log_err("ucal_add() failed: %s\n", u_errorName(status)); return; }
        
        newDOW = ucal_get(cal, UCAL_DAY_OF_WEEK, &status);
        if (U_FAILURE(status)) { log_err("ucal_get() failed: %s\n", u_errorName(status)); return; }
        expectedDOW = 1 + (DOW + delta - 1) % 7;
        date1=ucal_getMillis(cal, &status);
        if(U_FAILURE(status)){ log_err("ucal_getMiilis() failed: %s\n", u_errorName(status)); return;}
        if (newDOW != expectedDOW) {
            log_err("Day of week should be %d instead of %d on %s", expectedDOW, newDOW, 
                u_austrcpy(tempMsgBuf, myDateFormat(datfor, date1)) );    
            return; 
        }
    }
    while (newDOW != initialDOW);
    
    ucal_close(cal);
    udat_close(datfor);
    free(tzID);
    
}
 
/* ------------------------------------- */
 
/**
 * Confirm that the offset between local time and GMT behaves as expected.
 */
static void TestGMTvsLocal()
{
    log_verbose("\nTesting the offset between the GMT and local time\n");
    testZones(1999, 1, 1, 12, 0, 0);
    testZones(1999, 4, 16, 18, 30, 0);
    testZones(1998, 12, 17, 19, 0, 0);
}
 
/* ------------------------------------- */
 
static void testZones(int32_t yr, int32_t mo, int32_t dt, int32_t hr, int32_t mn, int32_t sc)
{
    int32_t offset,utc, expected;
    UCalendar *gmtcal = 0, *cal = 0;
    UDate date1;
    double temp;
    UDateFormat *datfor = 0;
    UErrorCode status = U_ZERO_ERROR;
    UChar* tzID = 0;
    char tempMsgBuf[256];

    tzID=(UChar*)malloc(sizeof(UChar) * 4);
    u_strcpy(tzID, fgGMTID);
    gmtcal=ucal_open(tzID, 3, "en_US", UCAL_TRADITIONAL, &status);;
    if (U_FAILURE(status)) {
        log_err("ucal_open failed: %s\n", u_errorName(status)); 
        return; 
    }
    u_uastrcpy(tzID, "PST");
    cal = ucal_open(tzID, 3, "en_US", UCAL_TRADITIONAL, &status);
    if (U_FAILURE(status)) {
        log_err("ucal_open failed: %s\n", u_errorName(status));
        return; 
    }
    
    datfor=udat_open(UDAT_MEDIUM,UDAT_MEDIUM ,NULL, fgGMTID,-1,NULL, 0, &status);
    if(U_FAILURE(status)){
        log_err("error in creating the dateformat : %s\n", u_errorName(status));
    }
   
    ucal_setDateTime(gmtcal, yr, mo - 1, dt, hr, mn, sc, &status);
    if (U_FAILURE(status)) {
        log_err("ucal_setDateTime failed: %s\n", u_errorName(status));
        return; 
    }
    ucal_set(gmtcal, UCAL_MILLISECOND, 0);
    date1 = ucal_getMillis(gmtcal, &status);
    if (U_FAILURE(status)) {
        log_err("ucal_getMillis failed: %s\n", u_errorName(status));
        return;
    }
    log_verbose("date = %s\n", u_austrcpy(tempMsgBuf, myDateFormat(datfor, date1)) );

    
    ucal_setMillis(cal, date1, &status);
    if (U_FAILURE(status)) {
        log_err("ucal_setMillis() failed: %s\n", u_errorName(status));
        return;
    }

    offset = ucal_get(cal, UCAL_ZONE_OFFSET, &status);
    offset += ucal_get(cal, UCAL_DST_OFFSET, &status);
   
    if (U_FAILURE(status)) {
        log_err("ucal_get() failed: %s\n", u_errorName(status));
        return;
    }
    temp=(double)((double)offset / 1000.0 / 60.0 / 60.0);
    /*printf("offset for %s %f hr\n", austrdup(myDateFormat(datfor, date1)), temp);*/
       
    utc = ((ucal_get(cal, UCAL_HOUR_OF_DAY, &status) * 60 +
                    ucal_get(cal, UCAL_MINUTE, &status)) * 60 +
                   ucal_get(cal, UCAL_SECOND, &status)) * 1000 +
                    ucal_get(cal, UCAL_MILLISECOND, &status) - offset;
    if (U_FAILURE(status)) {
        log_err("ucal_get() failed: %s\n", u_errorName(status));
        return;
    }
    
    expected = ((hr * 60 + mn) * 60 + sc) * 1000;
    if (utc != expected) {
        temp=(double)(utc - expected)/ 1000 / 60 / 60.0;
        log_err("FAIL: Discrepancy of %d  millis = %fhr\n", utc-expected, temp );
    }
    else
        log_verbose("PASS: the offset between local and GMT is correct\n");
    ucal_close(gmtcal);
    ucal_close(cal);
    udat_close(datfor);
    free(tzID);
}
 
/* ------------------------------------- */


/* INTERNAL FUNCTIONS USED */
/*------------------------------------------------------------------------------------------- */
 
/* ------------------------------------- */
static void checkDateTime(UCalendar* c, 
                        int32_t y, int32_t m, int32_t d, 
                        int32_t hr, int32_t min, int32_t sec, 
                        int32_t ms, UCalendarDateFields field)

{
    UErrorCode status = U_ZERO_ERROR;
    if (ucal_get(c, UCAL_YEAR, &status) != y ||
        ucal_get(c, UCAL_MONTH, &status) != m ||
        ucal_get(c, UCAL_DATE, &status) != d ||
        ucal_get(c, UCAL_HOUR, &status) != hr ||
        ucal_get(c, UCAL_MINUTE, &status) != min ||
        ucal_get(c, UCAL_SECOND, &status) != sec ||
        ucal_get(c, UCAL_MILLISECOND, &status) != ms) {
        log_err("U_FAILURE for field  %d, Expected y/m/d h:m:s:ms of %d/%d/%d %d:%d:%d:%d  got %d/%d/%d %d:%d:%d:%d\n",
            (int32_t)field, y, m + 1, d, hr, min, sec, ms, 
                    ucal_get(c, UCAL_YEAR, &status),
                    ucal_get(c, UCAL_MONTH, &status) + 1,
                    ucal_get(c, UCAL_DATE, &status),
                    ucal_get(c, UCAL_HOUR, &status),
                    ucal_get(c, UCAL_MINUTE, &status) + 1,
                    ucal_get(c, UCAL_SECOND, &status),
                    ucal_get(c, UCAL_MILLISECOND, &status) );

                    if (U_FAILURE(status)){
                    log_err("ucal_get failed: %s\n", u_errorName(status)); 
                    return; 
                    }
    
     }
    else 
        log_verbose("Confirmed: %d/%d/%d %d:%d:%d:%d\n", y, m + 1, d, hr, min, sec, ms);
        
}
 
/* ------------------------------------- */
static void checkDate(UCalendar* c, int32_t y, int32_t m, int32_t d)
{
    UErrorCode status = U_ZERO_ERROR;
    if (ucal_get(c,UCAL_YEAR, &status) != y ||
        ucal_get(c, UCAL_MONTH, &status) != m ||
        ucal_get(c, UCAL_DATE, &status) != d) {
        
        log_err("FAILURE: Expected y/m/d of %d/%d/%d  got %d/%d/%d\n", y, m + 1, d, 
                    ucal_get(c, UCAL_YEAR, &status),
                    ucal_get(c, UCAL_MONTH, &status) + 1,
                    ucal_get(c, UCAL_DATE, &status) );
        
        if (U_FAILURE(status)) { 
            log_err("ucal_get failed: %s\n", u_errorName(status));
            return; 
        }
    }
    else 
        log_verbose("Confirmed: %d/%d/%d\n", y, m + 1, d);


}

/* ------------------------------------- */
 
/* ------------------------------------- */
 
static void verify1(const char* msg, UCalendar* c, UDateFormat* dat, int32_t year, int32_t month, int32_t day)
{
    UDate d1;
    UErrorCode status = U_ZERO_ERROR;
    if (ucal_get(c, UCAL_YEAR, &status) == year &&
        ucal_get(c, UCAL_MONTH, &status) == month &&
        ucal_get(c, UCAL_DATE, &status) == day) {
        if (U_FAILURE(status)) { 
            log_err("FAIL: Calendar::get failed: %s\n", u_errorName(status));
            return; 
        }
        log_verbose("PASS: %s\n", msg);
        d1=ucal_getMillis(c, &status);
        if (U_FAILURE(status)) { 
            log_err("ucal_getMillis failed: %s\n", u_errorName(status));
            return;
        }
    /*log_verbose(austrdup(myDateFormat(dat, d1)) );*/
    }
    else {
        log_err("FAIL: %s\n", msg);
        d1=ucal_getMillis(c, &status);
        if (U_FAILURE(status)) { 
            log_err("ucal_getMillis failed: %s\n", u_errorName(status) );
            return;
        }
        log_err("Got %s  Expected %d/%d/%d \n", austrdup(myDateFormat(dat, d1)), year, month + 1, day );
        return;
    }

        
}
 
/* ------------------------------------ */
static void verify2(const char* msg, UCalendar* c, UDateFormat* dat, int32_t year, int32_t month, int32_t day, 
                                                                     int32_t hour, int32_t min, int32_t sec, int32_t am_pm)
{
    UDate d1;
    UErrorCode status = U_ZERO_ERROR;
    char tempMsgBuf[256];

    if (ucal_get(c, UCAL_YEAR, &status) == year &&
        ucal_get(c, UCAL_MONTH, &status) == month &&
        ucal_get(c, UCAL_DATE, &status) == day &&
        ucal_get(c, UCAL_HOUR, &status) == hour &&
        ucal_get(c, UCAL_MINUTE, &status) == min &&
        ucal_get(c, UCAL_SECOND, &status) == sec &&
        ucal_get(c, UCAL_AM_PM, &status) == am_pm ){
        if (U_FAILURE(status)) { 
            log_err("FAIL: Calendar::get failed: %s\n", u_errorName(status));
            return; 
        }
        log_verbose("PASS: %s\n", msg); 
        d1=ucal_getMillis(c, &status);
        if (U_FAILURE(status)) { 
            log_err("ucal_getMillis failed: %s\n", u_errorName(status));
            return;
        }
        log_verbose("%s\n" , u_austrcpy(tempMsgBuf, myDateFormat(dat, d1)) );
    }
    else {
        log_err("FAIL: %s\n", msg);
        d1=ucal_getMillis(c, &status);
        if (U_FAILURE(status)) { 
            log_err("ucal_getMillis failed: %s\n", u_errorName(status)); 
            return;
        }
        log_err("Got %s Expected %d/%d/%d/ %d:%d:%d  %s\n", austrdup(myDateFormat(dat, d1)), 
            year, month + 1, day, hour, min, sec, (am_pm==0) ? "AM": "PM");
        
        return;
    }

        
}

void TestGregorianChange() {
    static const UChar utc[] = { 0x45, 0x74, 0x63, 0x2f, 0x47, 0x4d, 0x54, 0 }; /* "Etc/GMT" */
    const int32_t dayMillis = 86400 * INT64_C(1000);    /* 1 day = 86400 seconds */
    UCalendar *cal;
    UDate date;
    UErrorCode errorCode = U_ZERO_ERROR;

    /* Test ucal_setGregorianChange() on a Gregorian calendar. */
    errorCode = U_ZERO_ERROR;
    cal = ucal_open(utc, -1, "", UCAL_GREGORIAN, &errorCode);
    if(U_FAILURE(errorCode)) {
        log_err("ucal_open(UTC) failed: %s\n", u_errorName(errorCode));
        return;
    }
    ucal_setGregorianChange(cal, -365 * (dayMillis * (UDate)1), &errorCode);
    if(U_FAILURE(errorCode)) {
        log_err("ucal_setGregorianChange(1969) failed: %s\n", u_errorName(errorCode));
    } else {
        date = ucal_getGregorianChange(cal, &errorCode);
        if(U_FAILURE(errorCode) || date != -365 * (dayMillis * (UDate)1)) {
            log_err("ucal_getGregorianChange() failed: %s, date = %f\n", u_errorName(errorCode), date);
        }
    }
    ucal_close(cal);

    /* Test ucal_setGregorianChange() on a non-Gregorian calendar where it should fail. */
    errorCode = U_ZERO_ERROR;
    cal = ucal_open(utc, -1, "th@calendar=buddhist", UCAL_TRADITIONAL, &errorCode);
    if(U_FAILURE(errorCode)) {
        log_err("ucal_open(UTC, non-Gregorian) failed: %s\n", u_errorName(errorCode));
        return;
    }
    ucal_setGregorianChange(cal, -730 * (dayMillis * (UDate)1), &errorCode);
    if(errorCode != U_UNSUPPORTED_ERROR) {
        log_err("ucal_setGregorianChange(non-Gregorian calendar) did not yield U_UNSUPPORTED_ERROR but %s\n",
                u_errorName(errorCode));
    }
    errorCode = U_ZERO_ERROR;
    date = ucal_getGregorianChange(cal, &errorCode);
    if(errorCode != U_UNSUPPORTED_ERROR) {
        log_err("ucal_getGregorianChange(non-Gregorian calendar) did not yield U_UNSUPPORTED_ERROR but %s\n",
                u_errorName(errorCode));
    }
    ucal_close(cal);
}

#endif /* #if !UCONFIG_NO_FORMATTING */