/*
 *******************************************************************************
 * Copyright (C) 2001, International Business Machines Corporation and         *
 * others. All Rights Reserved.                                                *
 *******************************************************************************
 * $Source: /xsrl/Nsvn/icu/icu4j/src/com/ibm/icu/dev/test/format/DateFormatTest.java,v $ 
 * $Date: 2003/05/14 19:03:16 $ 
 * $Revision: 1.16 $
 *
 *****************************************************************************************
 */

/** 
 * Port From:   ICU4C v1.8.1 : format : DateFormatTest
 * Source File: $ICU4CRoot/source/test/intltest/dtfmttst.cpp
 **/

package com.ibm.icu.dev.test.format;

import com.ibm.icu.text.*;
import com.ibm.icu.util.*;
import com.ibm.icu.impl.*;
import java.util.Date;
import java.util.ResourceBundle;
import java.text.ParseException;
import java.text.ParsePosition;
import java.util.Locale;
import java.text.FieldPosition;

public class DateFormatTest extends com.ibm.icu.dev.test.TestFmwk {
    
    public static void main(String[] args) throws Exception {
        new DateFormatTest().run(args);
    }
    
    // Test written by Wally Wedel and emailed to me.
    public void TestWallyWedel() {
        /*
         * Instantiate a TimeZone so we can get the ids.
         */
        //TimeZone tz = new SimpleTimeZone(7, ""); //The variable is never used
        /*
         * Computational variables.
         */
        int offset, hours, minutes;
        /*
         * Instantiate a SimpleDateFormat set up to produce a full time
         zone name.
         */
        SimpleDateFormat sdf = new SimpleDateFormat("zzzz");
        /*
         * A String array for the time zone ids.
         */
    
        final String[] ids = TimeZone.getAvailableIDs();
        int ids_length = ids.length; //when fixed the bug should comment it out
    
        /*
         * How many ids do we have?
         */
        logln("Time Zone IDs size:" + ids_length);
        /*
         * Column headings (sort of)
         */
        logln("Ordinal ID offset(h:m) name");
        /*
         * Loop through the tzs.
         */
        Date today = new Date();
        Calendar cal = Calendar.getInstance();
        for (int i = 0; i < ids_length; i++) {
            logln(i + " " + ids[i]);
            TimeZone ttz = TimeZone.getTimeZone(ids[i]);
            // offset = ttz.getRawOffset();
            cal.setTimeZone(ttz);
            cal.setTime(today);
            offset = cal.get(Calendar.ZONE_OFFSET) + cal.get(Calendar.DST_OFFSET);
            // logln(i + " " + ids[i] + " offset " + offset);
            String sign = "+";
            if (offset < 0) {
                sign = "-";
                offset = -offset;
            }
            hours = offset / 3600000;
            minutes = (offset % 3600000) / 60000;
            String dstOffset = sign + (hours < 10 ? "0" : "") + hours
                    + ":" + (minutes < 10 ? "0" : "") + minutes; 
            /*
             * Instantiate a date so we can display the time zone name.
             */
            sdf.setTimeZone(ttz);
            /*
             * Format the output.
             */
            StringBuffer fmtOffset = new StringBuffer("");
            FieldPosition pos = new FieldPosition(0);
            
            try {
                fmtOffset = sdf.format(today, fmtOffset, pos);
            } catch (Exception e) {            
                logln("Exception:" + e);
                continue;
            }
            // UnicodeString fmtOffset = tzS.toString();
            String fmtDstOffset = null;
            if (fmtOffset.toString().startsWith("GMT")) {
                //fmtDstOffset = fmtOffset.substring(3);
                fmtDstOffset = fmtOffset.substring(3, fmtOffset.length());
            }
            /*
             * Show our result.
             */
    
            boolean ok = fmtDstOffset == null || fmtDstOffset.equals("") || fmtDstOffset.equals(dstOffset);
            if (ok) {
                logln(i + " " + ids[i] + " " + dstOffset + " "
                      + fmtOffset + (fmtDstOffset != null ? " ok" : " ?")); 
            } else {
                errln(i + " " + ids[i] + " " + dstOffset + " " + fmtOffset + " *** FAIL ***");
            }
        
        }
    }
    
    public void TestEquals() {
        DateFormat fmtA = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.FULL); 
        DateFormat fmtB = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.FULL); 
        if (!fmtA.equals(fmtB))
            errln("FAIL");    
    }
    
    /**
     * Test the parsing of 2-digit years.
     */
    public void TestTwoDigitYearDSTParse() {
    
        SimpleDateFormat fullFmt = new SimpleDateFormat("EEE MMM dd HH:mm:ss.SSS zzz yyyy G"); 
        SimpleDateFormat fmt = new SimpleDateFormat("dd-MMM-yy h:mm:ss 'o''clock' a z", Locale.ENGLISH); 
        String s = "03-Apr-04 2:20:47 o'clock AM PST";
    
        /*
         * SimpleDateFormat(pattern, locale) Construct a SimpleDateDateFormat using
         * the givening pattern, the locale and using the TimeZone.getDefault();
         * So it need to add the timezone offset on hour field. 
         * ps. the Method Calendar.getTime() used by SimpleDateFormat.parse() always 
         * return Date vaule with TimeZone.getDefault() [Richard/GCL]
         */
        
        TimeZone defaultTZ = TimeZone.getDefault();
        TimeZone PST = TimeZone.getTimeZone("PST");
        int defaultOffset = defaultTZ.getRawOffset();
        int PSTOffset = PST.getRawOffset();
        int hour = 2 + (defaultOffset - PSTOffset) / (60*60*1000);
        hour = (hour < 0) ? hour + 24 : hour;
        try {
            Date d = fmt.parse(s);
            Calendar cal = Calendar.getInstance();
            cal.setTime(d);
            //DSTOffset
            hour += defaultTZ.inDaylightTime(d) ? 1 : 0;
            
            logln(s + " P> " + ((DateFormat) fullFmt).format(d));
            int hr = cal.get(Calendar.HOUR_OF_DAY);
            if (hr != hour)
                errln("FAIL: Should parse to hour " + hour);
        } catch (ParseException e) {
            errln("Parse Error:" + e.getMessage());
        }
    
    }
    
    /**
     * Verify that returned field position indices are correct.
     */
    public void TestFieldPosition() {
        DateFormat[] dateFormats = new DateFormat[4];
        int dateFormats_length = dateFormats.length;
        String fieldNames[] = {
                "ERA", "YEAR", "MONTH", "WEEK_OF_YEAR", "WEEK_OF_MONTH", "DAY_OF_MONTH",   "DAY_OF_YEAR",
                "DAY_OF_WEEK",   "DAY_OF_WEEK_IN_MONTH", "AM_PM", "HOUR","HOUR_OF_DAY","MINUTE",
                "SECOND", "MILLISECOND", "ZONE_OFFSET" };
        /* {sfb} This test was coded incorrectly.
        / FieldPosition uses the fields in the class you are formatting with
        / So, for example, to get the DATE field from a DateFormat use
        / DateFormat.DATE_FIELD, __not__ Calendar.DATE
        / The ordering of the expected values used previously was wrong.
        / instead of re-ordering this mess of strings, just transform the index values */
    
        /* field values, in Calendar order */
        final String[] expected =
            { "", "1997", "August", "", "", "13", "", "Wednesday", "", "PM", "2", "", "34", "12", "", "PDT",
            /* Following two added by weiv for two new fields */"", "1997", "#", 
            /* # is a marker for "ao\xfbt" == "aou^t" */
            "", "", "13", "", "mercredi", "", "", "", "14", "34", "", "", "PDT",
            /* Following two added by weiv for two new fields */
            "AD", "1997", "8", "33", "3", "13", "225", "Wed", "2", "PM", "2", "14", "34", "12", "513", "PDT",
            /* Following two added by weiv for two new fields */
            "AD",  "1997",  "August",  "0033", "0003", "0013", "0225", "Wednesday", "0002",
             "PM", "0002",  "0014", "0034", "0012",   "0513", "Pacific Daylight Time",
            /* Following two added by weiv for two new fields */ "1997", "0004", "" };
    
        Date someDate = new Date((long) 871508052513.0);
        int j, exp;
    
        dateFormats[0] = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL, Locale.US);
        dateFormats[1] = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL, Locale.FRANCE);
        dateFormats[2] = new SimpleDateFormat("G, y, M, d, k, H, m, s, S, E, D, F, w, W, a, h, K, z, y, E", Locale.US);
        dateFormats[3] = new SimpleDateFormat("GGGG, yyyy, MMMM, dddd, kkkk, HHHH, mmmm, ssss, SSSS, EEEE, DDDD, FFFF, wwww, WWWW, aaaa, hhhh, KKKK, zzzz, yyyy, EEEE", Locale.US);
        //fix the jdk resources differences between jdk 1.2 and jdk 1.3
        // String javaVersion = System.getProperty("java.version");
        
        for (j = 0, exp = 0; j < dateFormats_length; ++j) {
          //  String str;
            DateFormat df = dateFormats[j];
            TimeZone tz = TimeZone.getTimeZone("PST");
            ((SimpleTimeZone)tz).setDSTSavings(3600000);
            df.setTimeZone(tz);
            logln(" Pattern = " + ((SimpleDateFormat) df).toPattern());
            // str = "";
            try {
                logln("  Result = " + df.format(someDate));
            } catch (Exception e) {
                System.out.println(e);
            }
            for (int i = 0; i < fieldNames.length; ++i) {
                String field = getFieldText(df, i, someDate);
                String expStr = "";
                if (!expected[exp].substring(0).equals("#")) {
                    expStr = expected[exp];
                } else {
                    // we cannot have latin-1 characters in source code, therefore we fix up the string for "aou^t" 
                    expStr = expStr + "\u0061" + "\u006f" + "\u00fb" + "\u0074";
                }
                if (/*javaVersion.startsWith("1.2") &&*/ (exp==31)) {
                    expStr = "GMT-07:00";
                }
                if (!field.equals(expStr))
                    errln("FAIL: field #" + i + " " + fieldNames[i] + " = \"" + field + "\", expected \"" + expStr + "\"");
                ++exp;
            }
        }
    }
    
    // internal utility function
    public String getFieldText(DateFormat df, int field, Date date) {
        final int[] fgCalendarToDateFormatField ={
            DateFormat.ERA_FIELD, 
            DateFormat.YEAR_FIELD, 
            DateFormat.MONTH_FIELD,
            DateFormat.WEEK_OF_YEAR_FIELD, 
            DateFormat.WEEK_OF_MONTH_FIELD,
            DateFormat.DATE_FIELD, 
            DateFormat.DAY_OF_YEAR_FIELD, 
            DateFormat.DAY_OF_WEEK_FIELD,     
            DateFormat.DAY_OF_WEEK_IN_MONTH_FIELD, 
            DateFormat.AM_PM_FIELD,
            DateFormat.HOUR1_FIELD, 
            DateFormat.HOUR_OF_DAY0_FIELD, 
            DateFormat.MINUTE_FIELD, 
            DateFormat.SECOND_FIELD, 
            DateFormat.MILLISECOND_FIELD,
            DateFormat.TIMEZONE_FIELD
            };
        StringBuffer formatResult = new StringBuffer("");
        // {sfb} added to convert Calendar Fields to DateFormat fields
        FieldPosition pos = new FieldPosition(fgCalendarToDateFormatField[field]);
        formatResult = df.format(date, formatResult, pos);    
        return formatResult.substring(pos.getBeginIndex(), pos.getEndIndex());
    }
    
    /**
     * Verify that strings which contain incomplete specifications are parsed
     * correctly.  In some instances, this means not being parsed at all, and
     * returning an appropriate error.
     */
    public void TestPartialParse994() {
    
        SimpleDateFormat f = new SimpleDateFormat();
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set(1997, 1 - 1, 17, 10, 11, 42);
        Date date = null;
        tryPat994(f, "yy/MM/dd HH:mm:ss", "97/01/17 10:11:42", cal.getTime());
        tryPat994(f, "yy/MM/dd HH:mm:ss", "97/01/17 10:", date);
        tryPat994(f, "yy/MM/dd HH:mm:ss", "97/01/17 10", date);
        tryPat994(f, "yy/MM/dd HH:mm:ss", "97/01/17 ", date);
        tryPat994(f, "yy/MM/dd HH:mm:ss", "97/01/17", date);
    }
    
    // internal test subroutine, used by TestPartialParse994
    public void tryPat994(SimpleDateFormat format, String pat, String str, Date expected) {
        Date Null = null;
        logln("Pattern \"" + pat + "\"   String \"" + str + "\"");
        try {
            format.applyPattern(pat);
            Date date = format.parse(str);    
            String f = ((DateFormat) format).format(date);
            logln(" parse(" + str + ") -> " + date);
            logln(" format -> " + f);
            if (expected.equals(Null) || !date.equals(expected))
                errln("FAIL: Expected null"); //" + expected);
            if (!f.equals(str))
                errln("FAIL: Expected " + str);
        } catch (ParseException e) {
            logln("ParseException: " + e.getMessage());
            if (!(expected ==Null))
                errln("FAIL: Expected " + expected);
        } catch (Exception e) {
            errln("*** Exception:");
            e.printStackTrace();
        }
    }
    
    /**
     * Verify the behavior of patterns in which digits for different fields run together
     * without intervening separators.
     */
    public void TestRunTogetherPattern985() {
        String format = "yyyyMMddHHmmssSSS";
        String now, then;
        //UBool flag;
        SimpleDateFormat formatter = new SimpleDateFormat(format);
        Date date1 = new Date();
        now = ((DateFormat) formatter).format(date1);
        logln(now);
        ParsePosition pos = new ParsePosition(0);
        Date date2 = formatter.parse(now, pos);
        if (date2 == null)
            then = "Parse stopped at " + pos.getIndex();
        else
            then = ((DateFormat) formatter).format(date2);
        logln(then);
        if (date2 == null || !date2.equals(date1))
            errln("FAIL");
    }

    /**
     * Verify the behavior of patterns in which digits for different fields run together
     * without intervening separators.
     */
    public void TestRunTogetherPattern917() {
        SimpleDateFormat fmt;
        String myDate;
        fmt = new SimpleDateFormat("yyyy/MM/dd");
        myDate = "1997/02/03";
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set(1997, 2 - 1, 3);
        _testIt917(fmt, myDate, cal.getTime());
        fmt = new SimpleDateFormat("yyyyMMdd");
        myDate = "19970304";
        cal.clear();
        cal.set(1997, 3 - 1, 4);
        _testIt917(fmt, myDate, cal.getTime());
    
    }
    
    // internal test subroutine, used by TestRunTogetherPattern917
    public void _testIt917(SimpleDateFormat fmt, String str, Date expected) {
        logln("pattern=" + fmt.toPattern() + "   string=" + str);
        Date o = new Date();
        o = (Date) ((DateFormat) fmt).parseObject(str, new ParsePosition(0));
        logln("Parsed object: " + o);
        if (o == null || !o.equals(expected))
            errln("FAIL: Expected " + expected);
        String formatted = o==null? "null" : ((DateFormat) fmt).format(o);
        logln( "Formatted string: " + formatted);
        if (!formatted.equals(str))
            errln( "FAIL: Expected " + str);
    }
    
    /**
     * Verify the handling of Czech June and July, which have the unique attribute that
     * one is a proper prefix substring of the other.
     */
    public void TestCzechMonths459() {
        DateFormat fmt = DateFormat.getDateInstance(DateFormat.FULL, new Locale("cs", "", "")); 
        logln("Pattern " + ((SimpleDateFormat) fmt).toPattern());
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set(1997, Calendar.JUNE, 15);
        Date june = cal.getTime();
        cal.clear();
        cal.set(1997, Calendar.JULY, 15);
        Date july = cal.getTime();
        String juneStr = fmt.format(june);
        String julyStr = fmt.format(july);
        try {
            logln("format(June 15 1997) = " + juneStr);
            Date d = fmt.parse(juneStr);
            String s = fmt.format(d);
            int month, yr, day, hr, min, sec;
            cal.setTime(d);
            yr = cal.get(Calendar.YEAR) - 1900;
            month = cal.get(Calendar.MONTH);
            day = cal.get(Calendar.DAY_OF_WEEK);
            hr = cal.get(Calendar.HOUR_OF_DAY);
            min = cal.get(Calendar.MINUTE);
            sec = cal.get(Calendar.SECOND);
            logln("  . parse . " + s + " (month = " + month + ")");
            if (month != Calendar.JUNE)
                errln("FAIL: Month should be June");
            logln("format(July 15 1997) = " + julyStr);
            d = fmt.parse(julyStr);
            s = fmt.format(d);
            cal.setTime(d);
            yr = cal.get(Calendar.YEAR) - 1900;
            month = cal.get(Calendar.MONTH);
            day = cal.get(Calendar.DAY_OF_WEEK);
            hr = cal.get(Calendar.HOUR_OF_DAY);
            min = cal.get(Calendar.MINUTE);
            sec = cal.get(Calendar.SECOND);
            logln("  . parse . " + s + " (month = " + month + ")");
            if (month != Calendar.JULY)
                errln("FAIL: Month should be July");
        } catch (ParseException e) {
            errln(e.getMessage());
        }
    }
    
    /**
     * Test the handling of 'D' in patterns.
     */
    public void TestLetterDPattern212() {
        String dateString = "1995-040.05:01:29";
        String bigD = "yyyy-DDD.hh:mm:ss";
        String littleD = "yyyy-ddd.hh:mm:ss";
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set(1995, 0, 1, 5, 1, 29);
        Date expLittleD = cal.getTime();
        Date expBigD = new Date((long) (expLittleD.getTime() + 39 * 24 * 3600000.0));
        expLittleD = expBigD; // Expect the same, with default lenient parsing
        logln("dateString= " + dateString);
        SimpleDateFormat formatter = new SimpleDateFormat(bigD);
        ParsePosition pos = new ParsePosition(0);
        Date myDate = formatter.parse(dateString, pos);
        logln("Using " + bigD + " . " + myDate);
        if (!myDate.equals(expBigD))
            errln("FAIL: Expected " + expBigD);
        formatter = new SimpleDateFormat(littleD);
        pos = new ParsePosition(0);
        myDate = formatter.parse(dateString, pos);
        logln("Using " + littleD + " . " + myDate);
        if (!myDate.equals(expLittleD))
            errln("FAIL: Expected " + expLittleD);
    }
    
    /**
     * Test the day of year pattern.
     */
    public void TestDayOfYearPattern195() {
        Calendar cal = Calendar.getInstance();
        Date today = cal.getTime();
        int year,month,day; 
        year = cal.get(Calendar.YEAR);
        month = cal.get(Calendar.MONTH);
        day = cal.get(Calendar.DAY_OF_MONTH);
        cal.clear();
        cal.set(year, month, day);
        Date expected = cal.getTime();
        logln("Test Date: " + today);
        SimpleDateFormat sdf = (SimpleDateFormat)DateFormat.getDateInstance();
        tryPattern(sdf, today, null, expected);
        tryPattern(sdf, today, "G yyyy DDD", expected);
    }
    
    // interl test subroutine, used by TestDayOfYearPattern195
    public void tryPattern(SimpleDateFormat sdf, Date d, String pattern, Date expected) {
        if (pattern != null)
            sdf.applyPattern(pattern);
        logln("pattern: " + sdf.toPattern());
        String formatResult = ((DateFormat) sdf).format(d);
        logln(" format -> " + formatResult);
        try {
            Date d2 = sdf.parse(formatResult);
            logln(" parse(" + formatResult + ") -> " + d2);
            if (!d2.equals(expected))
                errln("FAIL: Expected " + expected);
            String format2 = ((DateFormat) sdf).format(d2);
            logln(" format -> " + format2);
            if (!formatResult.equals(format2))
                errln("FAIL: Round trip drift");
        } catch (Exception e) {
            errln(e.getMessage());
        }
    }
    
    /**
     * Test the handling of single quotes in patterns.
     */
    public void TestQuotePattern161() {
        SimpleDateFormat formatter = new SimpleDateFormat("MM/dd/yyyy 'at' hh:mm:ss a zzz", Locale.US); 
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set(1997, Calendar.AUGUST, 13, 10, 42, 28);
        Date currentTime_1 = cal.getTime();
        String dateString = ((DateFormat) formatter).format(currentTime_1);
        String exp = "08/13/1997 at 10:42:28 AM ";
        logln("format(" + currentTime_1 + ") = " + dateString);
        if (!dateString.substring(0, exp.length()).equals(exp))
            errln("FAIL: Expected " + exp);
    
    }
        
    /**
     * Verify the correct behavior when handling invalid input strings.
     */
    public void TestBadInput135() {
        int looks[] = {DateFormat.SHORT, DateFormat.MEDIUM, DateFormat.LONG, DateFormat.FULL}; 
        int looks_length = looks.length;
        final String[] strings = {"Mar 15", "Mar 15 1997", "asdf", "3/1/97 1:23:", "3/1/00 1:23:45 AM"}; 
        int strings_length = strings.length;
        DateFormat full = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, Locale.US); 
        String expected = "March 1, 2000 1:23:45 AM ";
        for (int i = 0; i < strings_length; ++i) {
            final String text = strings[i];
            for (int j = 0; j < looks_length; ++j) {
                int dateLook = looks[j];
                for (int k = 0; k < looks_length; ++k) {
                    int timeLook = looks[k];
                    DateFormat df = DateFormat.getDateTimeInstance(dateLook, timeLook, Locale.US); 
                    String prefix = text + ", " + dateLook + "/" + timeLook + ": "; 
                    try {
                        Date when = df.parse(text);
                        if (when == null) {
                            errln(prefix + "SHOULD NOT HAPPEN: parse returned null.");
                            continue;
                        }  
                        if (when != null) {
                            String format;
                            format = full.format(when);
                            logln(prefix + "OK: " + format);
                            if (!format.substring(0, expected.length()).equals(expected))
                                errln("FAIL: Expected " + expected);
                        }
                    } catch(java.text.ParseException e) {
                        logln(e.getMessage());
                    }
                }
            }
        }
    }
    
    /**
     * Verify the correct behavior when parsing an array of inputs against an
     * array of patterns, with known results.  The results are encoded after
     * the input strings in each row.
     */
    public void TestBadInput135a() {
    
        SimpleDateFormat dateParse = new SimpleDateFormat("", Locale.US);
        final String ss;
        Date date;
        String[] parseFormats ={"MMMM d, yyyy", "MMMM d yyyy", "M/d/yy",
                                "d MMMM, yyyy", "d MMMM yyyy",  "d MMMM",
                                "MMMM d", "yyyy", "h:mm a MMMM d, yyyy" };
        String[] inputStrings = {
            "bogus string", null, null, null, null, null, null, null, null, null,
                "April 1, 1997", "April 1, 1997", null, null, null, null, null, "April 1", null, null,
                "Jan 1, 1970", "January 1, 1970", null, null, null, null, null, "January 1", null, null,
                "Jan 1 2037", null, "January 1 2037", null, null, null, null, "January 1", null, null,
                "1/1/70", null, null, "1/1/70", null, null, null, null, "0001", null,
                "5 May 1997", null, null, null, null, "5 May 1997", "5 May", null, "0005", null,
                "16 May", null, null, null, null, null, "16 May", null, "0016", null,
                "April 30", null, null, null, null, null, null, "April 30", null, null,
                "1998", null, null, null, null, null, null, null, "1998", null,
                "1", null, null, null, null, null, null, null, "0001", null,
                "3:00 pm Jan 1, 1997", null, null, null, null, null, null, null, "0003", "3:00 PM January 1, 1997",
                };
        final int PF_LENGTH = parseFormats.length;
        final int INPUT_LENGTH = inputStrings.length;
    
        dateParse.applyPattern("d MMMM, yyyy");
        dateParse.setTimeZone(TimeZone.getDefault());
        ss = "not parseable";
        //    String thePat;
        logln("Trying to parse \"" + ss + "\" with " + dateParse.toPattern());
        try {
            date = dateParse.parse(ss);
        } catch (Exception ex) {
            logln("FAIL:" + ex);
        }
        for (int i = 0; i < INPUT_LENGTH; i += (PF_LENGTH + 1)) {
            ParsePosition parsePosition = new ParsePosition(0);
            String s = inputStrings[i];
            for (int index = 0; index < PF_LENGTH; ++index) {
                final String expected = inputStrings[i + 1 + index];
                dateParse.applyPattern(parseFormats[index]);
                dateParse.setTimeZone(TimeZone.getDefault());
                try {
                    parsePosition.setIndex(0);
                    date = dateParse.parse(s, parsePosition);
                    if (parsePosition.getIndex() != 0) {
                        String s1, s2;
                        s1 = s.substring(0, parsePosition.getIndex());
                        s2 = s.substring(parsePosition.getIndex(), s.length());
                        if (date == null) {
                            errln("ERROR: null result fmt=\"" + parseFormats[index]
                                    + "\" pos=" + parsePosition.getIndex()
                                    + " " + s1 + "|" + s2);
                        } else {
                            String result = ((DateFormat) dateParse).format(date);
                            logln("Parsed \"" + s + "\" using \"" + dateParse.toPattern() + "\" to: " + result);
                            if (expected == null)
                                errln("FAIL: Expected parse failure");
                            else
                                if (!result.equals(expected))
                                    errln("FAIL: Expected " + expected);
                        }
                    } else
                        if (expected != null) {
                            errln("FAIL: Expected " + expected + " from \"" + s
                                    + "\" with \"" + dateParse.toPattern()+ "\"");
                        }
                } catch (Exception ex) {
                    logln("FAIL:" + ex);
                }
            }
        }
    
    }
    
    /**
     * Test the parsing of two-digit years.
     */
    public void TestTwoDigitYear() {
        DateFormat fmt = DateFormat.getDateInstance(DateFormat.SHORT, Locale.US);
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set(117 + 1900, Calendar.JUNE, 5);
        parse2DigitYear(fmt, "6/5/17", cal.getTime());
        cal.clear();
        cal.set(34 + 1900, Calendar.JUNE, 4);
        parse2DigitYear(fmt, "6/4/34", cal.getTime());
    }
    
    // internal test subroutine, used by TestTwoDigitYear
    public void parse2DigitYear(DateFormat fmt, String str, Date expected) {
        try {
            Date d = fmt.parse(str);
            logln("Parsing \""+ str+ "\" with "+ ((SimpleDateFormat) fmt).toPattern()
                    + "  => "+ d); 
            if (!d.equals(expected))
                errln( "FAIL: Expected " + expected);
        } catch (ParseException e) {
            errln(e.getMessage());
        }
    }
    
    /**
     * Test the formatting of time zones.
     */
    public void TestDateFormatZone061() {
        Date date;
        DateFormat formatter;
        date = new Date(859248000000l);
        logln("Date 1997/3/25 00:00 GMT: " + date);
        formatter = new SimpleDateFormat("dd-MMM-yyyyy HH:mm", Locale.UK);
        formatter.setTimeZone(TimeZone.getTimeZone("GMT"));
        String temp = formatter.format(date);
        logln("Formatted in GMT to: " + temp);
        try {
            Date tempDate = formatter.parse(temp);
            logln("Parsed to: " + tempDate);
            if (!tempDate.equals(date))
                errln("FAIL: Expected " + date);
        } catch (Throwable t) {
            System.out.println(t);
        }
    
    }
    
    /**
     * Test the formatting of time zones.
     */
    public void TestDateFormatZone146() {
        TimeZone saveDefault = TimeZone.getDefault();
    
        //try {
        TimeZone thedefault = TimeZone.getTimeZone("GMT");
        TimeZone.setDefault(thedefault);
        // java.util.Locale.setDefault(new java.util.Locale("ar", "", ""));
    
        // check to be sure... its GMT all right
        TimeZone testdefault = TimeZone.getDefault();
        String testtimezone = testdefault.getID();
        if (testtimezone.equals("GMT"))
            logln("Test timezone = " + testtimezone);
        else
            errln("Test timezone should be GMT, not " + testtimezone);
    
        // now try to use the default GMT time zone
        GregorianCalendar greenwichcalendar = new GregorianCalendar(1997, 3, 4, 23, 0);
        //*****************************greenwichcalendar.setTimeZone(TimeZone.getDefault());
        //greenwichcalendar.set(1997, 3, 4, 23, 0);
        // try anything to set hour to 23:00 !!!
        greenwichcalendar.set(Calendar.HOUR_OF_DAY, 23);
        // get time
        Date greenwichdate = greenwichcalendar.getTime();
        // format every way
        String DATA[] = {
                "simple format:  ", "04/04/97 23:00 GMT", 
                "MM/dd/yy HH:mm z", "full format:    ", 
                "Friday, April 4, 1997 11:00:00 o'clock PM GMT", 
                "EEEE, MMMM d, yyyy h:mm:ss 'o''clock' a z", 
                "long format:    ", "April 4, 1997 11:00:00 PM GMT", 
                "MMMM d, yyyy h:mm:ss a z", "default format: ", 
                "04-Apr-97 11:00:00 PM", "dd-MMM-yy h:mm:ss a", 
                "short format:   ", "4/4/97 11:00 PM", 
                "M/d/yy h:mm a"}; 
        int DATA_length = DATA.length;
    
        for (int i = 0; i < DATA_length; i += 3) {
            DateFormat fmt = new SimpleDateFormat(DATA[i + 2], Locale.ENGLISH);
            fmt.setCalendar(greenwichcalendar);
            String result = fmt.format(greenwichdate);
            logln(DATA[i] + result);
            if (!result.equals(DATA[i + 1]))
                errln("FAIL: Expected " + DATA[i + 1] + ", got " + result);
        }
        //}
        //finally {
        TimeZone.setDefault(saveDefault);
        //}
    
    }
    
    /**
     * Test the formatting of dates in different locales.
     */
    public void TestLocaleDateFormat() {
    
        Date testDate = new Date(874306800000l); //Mon Sep 15 00:00:00 PDT 1997
        DateFormat dfFrench = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL, Locale.FRENCH);
        DateFormat dfUS = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL, Locale.US);
        //Set TimeZone = PDT
        TimeZone tz = TimeZone.getTimeZone("PST");
        ((SimpleTimeZone)tz).setDSTSavings(3600000);
        dfFrench.setTimeZone(tz);
        dfUS.setTimeZone(tz);
        String expectedFRENCH_JDK12 = "lundi 15 septembre 1997 00 h 00 GMT-07:00";
        String expectedFRENCH = "lundi 15 septembre 1997 00 h 00 PDT";
        String expectedUS = "Monday, September 15, 1997 12:00:00 AM PDT";
        logln("Date set to : " + testDate);
        String out = dfFrench.format(testDate);
        logln("Date Formated with French Locale " + out);
        //fix the jdk resources differences between jdk 1.2 and jdk 1.3
		/* our own data only has GMT-xxxx information here
        String javaVersion = System.getProperty("java.version");
        if (javaVersion.startsWith("1.2")) {
            if (!out.equals(expectedFRENCH_JDK12))
                errln("FAIL: Expected " + expectedFRENCH_JDK12);
        } else {
            if (!out.equals(expectedFRENCH))
                errln("FAIL: Expected " + expectedFRENCH);
        }
		*/
		if (!out.equals(expectedFRENCH_JDK12))
			errln("FAIL: Expected " + expectedFRENCH_JDK12);
        out = dfUS.format(testDate);
        logln("Date Formated with US Locale " + out);
        if (!out.equals(expectedUS))
            errln("FAIL: Expected " + expectedUS);
    }

    /**
     * Test DateFormat(Calendar) API
     */
    public void TestDateFormatCalendar() {
        DateFormat date=null, time=null, full=null;
        Calendar cal=null;
        ParsePosition pos = new ParsePosition(0);
        String str;
        Date when;

        /* Create a formatter for date fields. */
        date = DateFormat.getDateInstance(DateFormat.SHORT, Locale.US);
        if (date == null) {
            errln("FAIL: getDateInstance failed");
            return;
        }

        /* Create a formatter for time fields. */
        time = DateFormat.getTimeInstance(DateFormat.SHORT, Locale.US);
        if (time == null) {
            errln("FAIL: getTimeInstance failed");
            return;
        }

        /* Create a full format for output */
        full = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL,
                                              Locale.US);
        if (full == null) {
            errln("FAIL: getInstance failed");
            return;
        }

        /* Create a calendar */
        cal = Calendar.getInstance(Locale.US);
        if (cal == null) {
            errln("FAIL: Calendar.getInstance failed");
            return;
        }

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

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

    /**
     * Test DateFormat's parsing of space characters.  See jitterbug 1916.
     */
    public void TestSpaceParsing() {

        String DATA[] = {
            "yyyy MM dd",

            // pattern, input, expexted output (in quotes)
            "MMMM d yy", " 04 05 06",  null, // MMMM wants Apr/April
            null,        "04 05 06",   null,
            "MM d yy",   " 04 05 06",  "2006 04 05",
            null,        "04 05 06",   "2006 04 05",
            "MMMM d yy", " Apr 05 06", "2006 04 05",
            null,        "Apr 05 06",  "2006 04 05",
        };

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

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

            // pattern, input, expected parse or null if expect parse failure
            "HHmmss", "123456", "1970 01 01 12:34:56",
            null,     "12345",  "1970 01 01 01:23:45",
            null,     "1234",   null,
            null,     "00-05",  null,
            null,     "12-34",  null,
            null,     "00+05",  null,
            "ahhmm",  "PM730",  "1970 01 01 19:30:00",
        };

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

    /**
     * Test handling of white space.
     */
    public void TestWhiteSpaceParsing() {
        String DATA[] = {
            "yyyy MM dd",

            // pattern, input, expected parse or null if expect parse failure

            // Pattern space run should parse input text space run
            "MM   d yy",   " 04 01 03",    "2003 04 01",
            null,          " 04  01   03 ", "2003 04 01",
        };

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

    public void TestCoverage() {
        Date now = new Date();
        Calendar cal = new GregorianCalendar();
        DateFormat f = DateFormat.getTimeInstance();
        logln("time: " + f.format(now));

        int hash = f.hashCode(); // sigh, everyone overrides this
        
        f = DateFormat.getInstance(cal);
        if(hash == f.hashCode()){
            errln("FAIL: hashCode equal for inequal objects");
        }
        logln("time again: " + f.format(now));

        f = DateFormat.getTimeInstance(cal, DateFormat.FULL);
        logln("time yet again: " + f.format(now));

        ResourceBundle rb = ICULocaleData.getLocaleElements("de_DE");
        DateFormatSymbols sym = new DateFormatSymbols(rb, Locale.GERMANY);
        DateFormatSymbols sym2 = (DateFormatSymbols)sym.clone();
        if (sym.hashCode() != sym2.hashCode()) {
            errln("fail, date format symbols hashcode not equal");
        }
        if (!sym.equals(sym2)) {
            errln("fail, date format symbols not equal");
        }
    }

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

        SimpleDateFormat fmt = new SimpleDateFormat("", loc);
        SimpleDateFormat ref = new SimpleDateFormat(data[i++], loc);
        SimpleDateFormat gotfmt = new SimpleDateFormat("G yyyy MM dd HH:mm:ss z", loc);

        String currentPat = null;
        while (i<data.length) {
            String pattern  = data[i++];
            String input    = data[i++];
            String expected = data[i++];

            if (pattern != null) {
                fmt.applyPattern(pattern);
                currentPat = pattern;
            }
            String gotstr = FAIL_STR;
            Date got;
            try {
                got = fmt.parse(input);
                gotstr = gotfmt.format(got);
            } catch (ParseException e1) {
                got = FAIL;
            }

            Date exp = FAIL;
            String expstr = FAIL_STR;
            if (expected != null) {
                expstr = expected;
                try {
                    exp = ref.parse(expstr);
                } catch (ParseException e2) {
                    errln("FAIL: Internal test error");
                }
            }

            if (got == exp || (got != null && got.equals(exp))) {
                logln("Ok: " + input + " x " +
                      currentPat + " => " + gotstr);                
            } else {
                errln("FAIL: " + input + " x " +
                      currentPat + " => " + gotstr + ", expected " +
                      expstr);
            }
        }    
    }
}