/*
 *******************************************************************************
 * Copyright (C) 2001-2003, International Business Machines Corporation and         *
 * others. All Rights Reserved.                                                *
 *******************************************************************************
 */

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

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

import com.ibm.icu.text.*;
import com.ibm.icu.util.*;

import java.io.*;
import java.text.FieldPosition;
import java.text.Format;
import java.text.ParseException;
import java.text.ParsePosition;
import java.util.Date;
import java.util.Locale;

/** 
 * Performs regression test for DateFormat
 **/
public class DateFormatRegressionTest extends com.ibm.icu.dev.test.TestFmwk {

    public static void main(String[] args) throws Exception{
        new DateFormatRegressionTest().run(args);
    }
    
    /**
     * @bug 4029195
     */
    public void Test4029195() {
        Calendar cal = Calendar.getInstance();
        Date today = cal.getTime();
        logln("today: " + today);
        SimpleDateFormat sdf = (SimpleDateFormat) DateFormat.getDateInstance();
        String pat = sdf.toPattern();
        logln("pattern: " + pat);
        StringBuffer fmtd = new StringBuffer("");
        FieldPosition pos = new FieldPosition(0);
        fmtd = sdf.format(today, fmtd, pos);
        logln("today: " + fmtd);
    
        sdf.applyPattern("G yyyy DDD");
        StringBuffer todayS = new StringBuffer("");
        todayS = sdf.format(today, todayS, pos);
        logln("today: " + todayS);
        try {
            today = sdf.parse(todayS.toString());
            logln("today date: " + today);
        } catch (Exception e) {
            errln("Error reparsing date: " + e.getMessage());
        }
    
        try {
            StringBuffer rt = new StringBuffer("");
            rt = sdf.format(sdf.parse(todayS.toString()), rt, pos);
            logln("round trip: " + rt);
            if (!rt.toString().equals(todayS.toString()))
                errln("Fail: Want " + todayS + " Got " + rt);
        } catch (ParseException e) {
            errln("Fail: " + e);
            e.printStackTrace();
        }
    }
    
    /**
     * @bug 4052408
     */
    public void Test4052408() {
    
        DateFormat fmt = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, Locale.US); 
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set(97 + 1900, Calendar.MAY, 3, 8, 55);
        Date dt = cal.getTime();
        String str = fmt.format(dt);
        logln(str);
        
        if (!str.equals("5/3/97 8:55 AM"))
            errln("Fail: Test broken; Want 5/3/97 8:55 AM Got " + str);
    
        String expected[] = {
            "", //"ERA_FIELD",
            "97", //"YEAR_FIELD",
            "5", //"MONTH_FIELD",
            "3", //"DATE_FIELD",
            "", //"HOUR_OF_DAY1_FIELD",
            "", //"HOUR_OF_DAY0_FIELD",
            "55", //"MINUTE_FIELD",
            "", //"SECOND_FIELD",
            "", //"MILLISECOND_FIELD",
            "", //"DAY_OF_WEEK_FIELD",
            "", //"DAY_OF_YEAR_FIELD",
            "", //"DAY_OF_WEEK_IN_MONTH_FIELD",
            "", //"WEEK_OF_YEAR_FIELD",
            "", //"WEEK_OF_MONTH_FIELD",
            "AM", //"AM_PM_FIELD",
            "8", //"HOUR1_FIELD",
            "", //"HOUR0_FIELD",
            "" //"TIMEZONE_FIELD"
            };        
        String fieldNames[] = {
                "ERA_FIELD", 
                "YEAR_FIELD", 
                "MONTH_FIELD", 
                "DATE_FIELD", 
                "HOUR_OF_DAY1_FIELD", 
                "HOUR_OF_DAY0_FIELD", 
                "MINUTE_FIELD", 
                "SECOND_FIELD", 
                "MILLISECOND_FIELD", 
                "DAY_OF_WEEK_FIELD", 
                "DAY_OF_YEAR_FIELD", 
                "DAY_OF_WEEK_IN_MONTH_FIELD", 
                "WEEK_OF_YEAR_FIELD", 
                "WEEK_OF_MONTH_FIELD", 
                "AM_PM_FIELD", 
                "HOUR1_FIELD", 
                "HOUR0_FIELD", 
                "TIMEZONE_FIELD"}; 
    
        boolean pass = true;
        for (int i = 0; i <= 17; ++i) {
            FieldPosition pos = new FieldPosition(i);
            StringBuffer buf = new StringBuffer("");
            fmt.format(dt, buf, pos);
            //char[] dst = new char[pos.getEndIndex() - pos.getBeginIndex()];
            String dst = buf.substring(pos.getBeginIndex(), pos.getEndIndex());
            str = dst;
            log(i + ": " + fieldNames[i] + ", \"" + str + "\", "
                    + pos.getBeginIndex() + ", " + pos.getEndIndex()); 
            String exp = expected[i];
            if ((exp.length() == 0 && str.length() == 0) || str.equals(exp))
                logln(" ok");
            else {
                logln(" expected " + exp);
                pass = false;
            }
        }
        if (!pass)
            errln("Fail: FieldPosition not set right by DateFormat");
    }
    
    /**
     * @bug 4056591
     * Verify the function of the [s|g]et2DigitYearStart() API.
     */
    public void Test4056591() {
    
        try {
            SimpleDateFormat fmt = new SimpleDateFormat("yyMMdd", Locale.US);
            Calendar cal = Calendar.getInstance();
            cal.clear();
            cal.set(1809, Calendar.DECEMBER, 25);
            Date start = cal.getTime();
            fmt.set2DigitYearStart(start);
            if ((fmt.get2DigitYearStart() != start))
                errln("get2DigitYearStart broken");
            cal.clear();
            cal.set(1809, Calendar.DECEMBER, 25);
            Date d1 = cal.getTime();
            cal.clear();
            cal.set(1909, Calendar.DECEMBER, 24);
            Date d2 = cal.getTime();
            cal.clear();
            cal.set(1809, Calendar.DECEMBER, 26);
            Date d3 = cal.getTime();
            cal.clear();
            cal.set(1861, Calendar.DECEMBER, 25);
            Date d4 = cal.getTime();
            
            Date dates[] = {d1, d2, d3, d4};
    
            String strings[] = {"091225", "091224", "091226", "611225"};            
    
            for (int i = 0; i < 4; i++) {
                String s = strings[i];
                Date exp = dates[i];
                Date got = fmt.parse(s);
                logln(s + " . " + got + "; exp " + exp);
                if (got.getTime() != exp.getTime())
                    errln("set2DigitYearStart broken");
            }
        } catch (ParseException e) {
            errln("Fail: " + e);
            e.printStackTrace();
        }
    }
    
    /**
     * @bug 4059917
     */
    public void Test4059917() {        
        SimpleDateFormat fmt;
        String myDate;
        fmt = new SimpleDateFormat("yyyy/MM/dd");
        myDate = "1997/01/01";
        aux917( fmt, myDate );        
        fmt = new SimpleDateFormat("yyyyMMdd");
        myDate = "19970101";
        aux917( fmt, myDate );
    }
    
    public void aux917(SimpleDateFormat fmt, String str) {
    
        String pat = fmt.toPattern();
        logln("==================");
        logln("testIt: pattern=" + pat + " string=" + str);
        ParsePosition pos = new ParsePosition(0);
        Object o = fmt.parseObject(str, pos);
        //logln( UnicodeString("Parsed object: ") + o );
    
        StringBuffer formatted = new StringBuffer("");
        FieldPosition poss = new FieldPosition(0);
        formatted = fmt.format(o, formatted, poss);
    
        logln("Formatted string: " + formatted);
        if (!formatted.toString().equals(str))
            errln("Fail: Want " + str + " Got " + formatted);
    }
    
    /**
     * @bug 4060212
     */
    public void Test4060212() {
        String dateString = "1995-040.05:01:29";
        logln("dateString= " + dateString);
        logln("Using yyyy-DDD.hh:mm:ss");
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-DDD.hh:mm:ss");
        ParsePosition pos = new ParsePosition(0);
        Date myDate = formatter.parse(dateString, pos);
        DateFormat fmt = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.LONG); 
        String myString = fmt.format(myDate);
        logln(myString);
        Calendar cal = new GregorianCalendar();
        cal.setTime(myDate);
        if ((cal.get(Calendar.DAY_OF_YEAR) != 40))
            errln("Fail: Got " + cal.get(Calendar.DAY_OF_YEAR) + " Want 40");
    
        logln("Using yyyy-ddd.hh:mm:ss");
        formatter = new SimpleDateFormat("yyyy-ddd.hh:mm:ss");
        pos.setIndex(0);
        myDate = formatter.parse(dateString, pos);
        myString = fmt.format(myDate);
        logln(myString);
        cal.setTime(myDate);
        if ((cal.get(Calendar.DAY_OF_YEAR) != 40))
            errln("Fail: Got " + cal.get(Calendar.DAY_OF_YEAR) + " Want 40");
    }
    /**
     * @bug 4061287
     */
    public void Test4061287() {
    
        SimpleDateFormat df = new SimpleDateFormat("dd/MM/yyyy");
        try {
            logln(df.parse("35/01/1971").toString());
        } catch (ParseException e) {
            errln("Fail: " + e);
            e.printStackTrace();
        }
        df.setLenient(false);
        boolean ok = false;
        try {
            logln(df.parse("35/01/1971").toString());
        } catch (ParseException e) {
            ok = true;
        }
        if (!ok)
            errln("Fail: Lenient not working");
    }
    
    /**
     * @bug 4065240
     */
    public void Test4065240() {
        Date curDate;
        DateFormat shortdate, fulldate;
        String strShortDate, strFullDate;
        Locale saveLocale = Locale.getDefault();
        TimeZone saveZone = TimeZone.getDefault();
    
        try {
            Locale curLocale = new Locale("de", "DE");
            Locale.setDefault(curLocale);
            // {sfb} adoptDefault instead of setDefault
            //TimeZone.setDefault(TimeZone.createTimeZone("EST"));
            TimeZone.setDefault(TimeZone.getTimeZone("EST"));
            Calendar cal = Calendar.getInstance();
            cal.clear();
            cal.set(98 + 1900, 0, 1);
            curDate = cal.getTime();
            shortdate = DateFormat.getDateInstance(DateFormat.SHORT);
            fulldate = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG);
            strShortDate = "The current date (short form) is ";
            String temp;
            temp = shortdate.format(curDate);
            strShortDate += temp;
            strFullDate = "The current date (long form) is ";
            String temp2 = fulldate.format(curDate);
            strFullDate += temp2;
    
            logln(strShortDate);
            logln(strFullDate);
    
            // {sfb} What to do with resource bundle stuff?????
    
            // Check to see if the resource is present; if not, we can't test
            //ResourceBundle bundle = //The variable is never used
            //    ICULocaleData.getBundle("DateFormatZoneData", curLocale); 
    
            // {sfb} API change to ResourceBundle -- add getLocale()
            /*if (bundle.getLocale().getLanguage().equals("de")) {
                // UPDATE THIS AS ZONE NAME RESOURCE FOR <EST> in de_DE is updated
                if (!strFullDate.endsWith("GMT-05:00"))
                    errln("Fail: Want GMT-05:00");
            } else {
                logln("*** TEST COULD NOT BE COMPLETED BECAUSE DateFormatZoneData ***");
                logln("*** FOR LOCALE de OR de_DE IS MISSING ***");
            }*/
        } catch (Exception e) {
            logln(e.getMessage());
        } finally {
            Locale.setDefault(saveLocale);
            TimeZone.setDefault(saveZone);
        }
    
    }
    
    /*
      DateFormat.equals is too narrowly defined.  As a result, MessageFormat
      does not work correctly.  DateFormat.equals needs to be written so
      that the Calendar sub-object is not compared using Calendar.equals,
      but rather compared for equivalency.  This may necessitate adding a
      (package private) method to Calendar to test for equivalency.
      
      Currently this bug breaks MessageFormat.toPattern
      */
    /**
     * @bug 4071441
     */
    public void Test4071441() {
        DateFormat fmtA = DateFormat.getInstance();
        DateFormat fmtB = DateFormat.getInstance();
    
        // {sfb} Is it OK to cast away const here?
        Calendar calA = fmtA.getCalendar();
        Calendar calB = fmtB.getCalendar();
        calA.clear();
        calA.set(1900, 0 ,0);
        calB.clear();
        calB.set(1900, 0, 0);
        if (!calA.equals(calB))
            errln("Fail: Can't complete test; Calendar instances unequal");
        if (!fmtA.equals(fmtB))
            errln("Fail: DateFormat unequal when Calendars equal");
        calB.clear();
        calB.set(1961, Calendar.DECEMBER, 25);
        if (calA.equals(calB))
            errln("Fail: Can't complete test; Calendar instances equal");
        if (!fmtA.equals(fmtB))
            errln("Fail: DateFormat unequal when Calendars equivalent");
        logln("DateFormat.equals ok");
    }
        
    /* The java.text.DateFormat.parse(String) method expects for the
      US locale a string formatted according to mm/dd/yy and parses it
      correctly.
    
      When given a string mm/dd/yyyy it only parses up to the first
      two y's, typically resulting in a date in the year 1919.
      
      Please extend the parsing method(s) to handle strings with
      four-digit year values (probably also applicable to various
      other locales.  */
    /**
     * @bug 4073003
     */
    public void Test4073003() {
        try {
            DateFormat fmt = DateFormat.getDateInstance(DateFormat.SHORT, Locale.US);
            String tests[] = {"12/25/61", "12/25/1961", "4/3/2010", "4/3/10"};
            for (int i = 0; i < 4; i += 2) {
                Date d = fmt.parse(tests[i]);
                Date dd = fmt.parse(tests[i + 1]);
                String s;
                s = fmt.format(d);
                String ss;
                ss = fmt.format(dd);
                if (d.getTime() != dd.getTime())
                    errln("Fail: " + d + " != " + dd);
                if (!s.equals(ss))
                    errln("Fail: " + s + " != " + ss);
                logln("Ok: " + s + " " + d);
            }
        } catch (ParseException e) {
            errln("Fail: " + e);
            e.printStackTrace();
        }    
    }
    
    /**
     * @bug 4089106
     */
    public void Test4089106() {
        TimeZone def = TimeZone.getDefault();
        try {
            TimeZone z = new SimpleTimeZone((int) (1.25 * 3600000), "FAKEZONE");
            TimeZone.setDefault(z);
            SimpleDateFormat f = new SimpleDateFormat();
            if (!f.getTimeZone().equals(z))
                errln("Fail: SimpleTimeZone should use TimeZone.getDefault()");
        } finally {
            TimeZone.setDefault(def);
        }
    }
    
    /**
     * @bug 4100302
     */
    public void Test4100302() {
        
        Locale locales[] = {
            Locale.CANADA, Locale.CANADA_FRENCH, Locale.CHINA, 
            Locale.CHINESE, Locale.ENGLISH, Locale.FRANCE, Locale.FRENCH, 
            Locale.GERMAN, Locale.GERMANY, Locale.ITALIAN, Locale.ITALY, 
            Locale.JAPAN, Locale.JAPANESE, Locale.KOREA, Locale.KOREAN, 
            Locale.PRC, Locale.SIMPLIFIED_CHINESE, Locale.TAIWAN, 
            Locale.TRADITIONAL_CHINESE, Locale.UK, Locale.US}; 
        try {
            boolean pass = true;
            for (int i = 0; i < 21; i++) {
                Format format = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL, locales[i]); 
                byte[] bytes;
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                ObjectOutputStream oos = new ObjectOutputStream(baos);
                oos.writeObject(format);
                oos.flush();
                baos.close();
                bytes = baos.toByteArray();
                ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(bytes));
                Object o = ois.readObject();
                if (!format.equals(o)) {
                    pass = false;
                    logln("DateFormat instance for locale " + locales[i] + " is incorrectly serialized/deserialized."); 
                } else {
                    logln("DateFormat instance for locale " + locales[i] + " is OKAY.");
                }
            }
            if (!pass)
                errln("Fail: DateFormat serialization/equality bug");
        } catch (OptionalDataException e) {
            errln("Fail: " + e);
        } catch (IOException e) {
            errln("Fail: " + e);
        } catch (ClassNotFoundException e) {
            errln("Fail: " + e);
        } catch (Exception e) {
	    System.out.println(e);
	    //	    System.out.println(e.getCause());
            errln("Fail: " + e);
        }
    
    }
    
    /**
     * @bug 4101483
     */
    public void Test4101483() {
        SimpleDateFormat sdf = new SimpleDateFormat("z", Locale.US);
        FieldPosition fp = new FieldPosition(DateFormat.TIMEZONE_FIELD);
        Date d = new Date(9234567890L);
        StringBuffer buf = new StringBuffer("");
        sdf.format(d, buf, fp);
        logln(sdf.format(d, buf, fp).toString());
        logln("beginIndex = " + fp.getBeginIndex());
        logln("endIndex = " + fp.getEndIndex());
        if (fp.getBeginIndex() == fp.getEndIndex())
            errln("Fail: Empty field");
    }
    
    /**
     * @bug 4103340
     * @bug 4138203
     * This bug really only works in Locale.US, since that's what the locale
     * used for Date.toString() is.  Bug 4138203 reports that it fails on Korean
     * NT; it would actually have failed on any non-US locale.  Now it should
     * work on all locales.
     */
    public void Test4103340() {
    
        // choose a date that is the FIRST of some month 
        // and some arbitrary time
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set(1997, 3, 1, 1, 1, 1);
        Date d = cal.getTime(); 
        SimpleDateFormat df = new SimpleDateFormat("MMMM", Locale.US);
        String s = d.toString();
        StringBuffer s2 = new StringBuffer("");
        FieldPosition pos = new FieldPosition(0);
        s2 = df.format(d, s2, pos);
        logln("Date=" + s); 
        logln("DF=" + s2);
        String substr = s2.substring(0,2);
        if (s.indexOf(substr) == -1)
          errln("Months should match");
    }
    
    /**
     * @bug 4103341
     */
    public void Test4103341() {
        TimeZone saveZone = TimeZone.getDefault();
        try {
            // {sfb} changed from adoptDefault to setDefault
            TimeZone.setDefault(TimeZone.getTimeZone("CST"));
            SimpleDateFormat simple = new SimpleDateFormat("MM/dd/yyyy HH:mm");
            TimeZone temp = TimeZone.getDefault();
            if (!simple.getTimeZone().equals(temp))
                errln("Fail: SimpleDateFormat not using default zone");
        } finally {
            TimeZone.setDefault(saveZone);
        }
    }
    
    /**
     * @bug 4104136
     */
    public void Test4104136() {
        SimpleDateFormat sdf = new SimpleDateFormat();
        String pattern = "'time' hh:mm";
        sdf.applyPattern(pattern);
        logln("pattern: \"" + pattern + "\"");
        String strings[] = {"time 10:30", "time 10:x", "time 10x"};
        ParsePosition ppos[] = {new ParsePosition(10), new ParsePosition(0), new ParsePosition(0)};
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set(1970, Calendar.JANUARY, 1, 10, 30);
        Date dates[] = {cal.getTime(), new Date(-1), new Date(-1)};
        for (int i = 0; i < 3; i++) {
            String text = strings[i];
            ParsePosition finish = ppos[i];
            Date exp = dates[i];
            ParsePosition pos = new ParsePosition(0);
            Date d = sdf.parse(text, pos);
            logln(" text: \"" + text + "\"");
            logln(" index: %d" + pos.getIndex());
            logln(" result: " + d);
            if (pos.getIndex() != finish.getIndex())
                errln("Fail: Expected pos " + finish.getIndex());
            if (!((d == null && exp.equals(new Date(-1))) || (d.equals(exp))))
                errln( "Fail: Expected result " + exp);
        }
    }
    
    /**
     * @bug 4104522
     * CANNOT REPRODUCE
     * According to the bug report, this test should throw a
     * StringIndexOutOfBoundsException during the second parse.  However,
     * this is not seen.
     */
    public void Test4104522() {
        SimpleDateFormat sdf = new SimpleDateFormat();
        String pattern = "'time' hh:mm";
        sdf.applyPattern(pattern);
        logln("pattern: \"" + pattern + "\"");
        // works correctly
        ParsePosition pp = new ParsePosition(0);
        String text = "time ";
        Date dt = sdf.parse(text, pp);
        logln(" text: \"" + text + "\"" + " date: " + dt);
        // works wrong
        pp.setIndex(0);
        text = "time";
        dt = sdf.parse(text, pp);
        logln(" text: \"" + text + "\"" + " date: " + dt);    
    }
    
    /**
     * @bug 4106807
     */
    public void Test4106807() {
        Date dt;
        DateFormat df = DateFormat.getDateTimeInstance();
    
        SimpleDateFormat sdfs[] = {
                new SimpleDateFormat("yyyyMMddHHmmss"), 
                new SimpleDateFormat("yyyyMMddHHmmss'Z'"), 
                new SimpleDateFormat("yyyyMMddHHmmss''"), 
                new SimpleDateFormat("yyyyMMddHHmmss'a''a'"), 
                new SimpleDateFormat("yyyyMMddHHmmss %")}; 
        String strings[] = {
                "19980211140000", 
                "19980211140000", 
                "19980211140000", 
                "19980211140000a", 
                "19980211140000 "}; 
        GregorianCalendar gc = new GregorianCalendar();
        TimeZone timeZone = TimeZone.getDefault();
        TimeZone gmt = (TimeZone) timeZone.clone();
        gmt.setRawOffset(0);
        for (int i = 0; i < 5; i++) {
            SimpleDateFormat format = sdfs[i];
            String dateString = strings[i];
            try {
                format.setTimeZone(gmt);
                dt = format.parse(dateString);
                // {sfb} some of these parses will fail purposely
    
                StringBuffer fmtd = new StringBuffer("");
                FieldPosition pos = new FieldPosition(0);
                fmtd = df.format(dt, fmtd, pos);
                logln(fmtd.toString());
                //logln(df.format(dt)); 
                gc.setTime(dt);
                logln("" + gc.get(Calendar.ZONE_OFFSET));
                StringBuffer s = new StringBuffer("");
                s = format.format(dt, s, pos);
                logln(s.toString());
            } catch (ParseException e) {
                logln("No way Jose");
            }
        }
    }
    
    /*
      Synopsis: Chinese time zone CTT is not recogonized correctly.
      Description: Platform Chinese Windows 95 - ** Time zone set to CST ** 
      */
    /**
     * @bug 4108407
     */
    
    // {sfb} what to do with this one ?? 
    public void Test4108407() {
        /*
	// TODO user.timezone is a protected system property, catch securityexception and warn
	// if this is reenabled
        long l = System.currentTimeMillis(); 
        logln("user.timezone = " + System.getProperty("user.timezone", "?"));
        logln("Time Zone :" + 
                           DateFormat.getDateInstance().getTimeZone().getID()); 
        logln("Default format :" + 
                           DateFormat.getDateInstance().format(new Date(l))); 
        logln("Full format :" + 
                           DateFormat.getDateInstance(DateFormat.FULL).format(new 
                                                                              Date(l))); 
        logln("*** Set host TZ to CST ***");
        logln("*** THE RESULTS OF THIS TEST MUST BE VERIFIED MANUALLY ***");
        */
    }
    
    /**
     * @bug 4134203
     * SimpleDateFormat won't parse "GMT"
     */
    public void Test4134203() {
        String dateFormat = "MM/dd/yy HH:mm:ss zzz";
        SimpleDateFormat fmt = new SimpleDateFormat(dateFormat);
    
        ParsePosition p0 = new ParsePosition(0);
        Date d = fmt.parse("01/22/92 04:52:00 GMT", p0);
        logln(d.toString());
        if(p0.equals(new ParsePosition(0)))
            errln("Fail: failed to parse 'GMT'");
        // In the failure case an exception is thrown by parse();
        // if no exception is thrown, the test passes.
    }
    
    /**
     * @bug 4151631
     * SimpleDateFormat incorrect handling of 2 single quotes in format()
     */
    public void Test4151631() {
        String pattern = 
            "'TO_DATE('''dd'-'MM'-'yyyy HH:mm:ss''' , ''DD-MM-YYYY HH:MI:SS'')'"; 
        logln("pattern=" + pattern);
        SimpleDateFormat format = new SimpleDateFormat(pattern, Locale.US);
        StringBuffer result = new StringBuffer("");
        FieldPosition pos = new FieldPosition(0);
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set(1998, Calendar.JUNE, 30, 13, 30, 0);
        Date d = cal.getTime();
        result = format.format(d, result, pos); 
        if (!result.toString().equals("TO_DATE('30-06-1998 13:30:00' , 'DD-MM-YYYY HH:MI:SS')")) {
            errln("Fail: result=" + result);
        } else {
            logln("Pass: result=" + result);
        }
    }
    
    /**
     * @bug 4151706
     * 'z' at end of date format throws index exception in SimpleDateFormat
     * CANNOT REPRODUCE THIS BUG ON 1.2FCS
     */
    public void Test4151706() {
        String dateString = "Thursday, 31-Dec-98 23:00:00 GMT";
        SimpleDateFormat fmt = new SimpleDateFormat("EEEE, dd-MMM-yy HH:mm:ss z", Locale.US);
        Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"), Locale.US);
        cal.clear();
        cal.set(1998, Calendar.DECEMBER, 31, 23, 0, 0);
        Date d = new Date();
        try {
            d = fmt.parse(dateString);
            // {sfb} what about next two lines?
            if (d.getTime() != cal.getTime().getTime())
                errln("Incorrect value: " + d);
        } catch (Exception e) {
            errln("Fail: " + e);
        }
        StringBuffer temp = new StringBuffer("");
        FieldPosition pos = new FieldPosition(0);
        logln(dateString + " . " + fmt.format(d, temp, pos));
    }
    
    /**
     * @bug 4162071
     * Cannot reproduce this bug under 1.2 FCS -- it may be a convoluted duplicate
     * of some other bug that has been fixed.
     */
    public void Test4162071() {
        String dateString = "Thu, 30-Jul-1999 11:51:14 GMT";
        String format = "EEE', 'dd-MMM-yyyy HH:mm:ss z"; // RFC 822/1123
        SimpleDateFormat df = new SimpleDateFormat(format, Locale.US);
        try {
            Date x = df.parse(dateString);
            StringBuffer temp = new StringBuffer("");
            FieldPosition pos = new FieldPosition(0);
            logln(dateString + " -> " + df.format(x, temp, pos));
        } catch (Exception e) {
            errln("Parse format \"" + format + "\" failed.");
        }
    }
    
    /**
     * DateFormat shouldn't parse year "-1" as a two-digit year (e.g., "-1" . 1999).
     */
    public void Test4182066() {
        SimpleDateFormat fmt = new SimpleDateFormat("MM/dd/yy", Locale.US);
        SimpleDateFormat dispFmt = new SimpleDateFormat("MMM dd yyyy HH:mm:ss GG", Locale.US);
        /* We expect 2-digit year formats to put 2-digit years in the right
         * window.  Out of range years, that is, anything less than "00" or
         * greater than "99", are treated as literal years.  So "1/2/3456"
         * becomes 3456 AD.  Likewise, "1/2/-3" becomes -3 AD == 2 BC.
         */
        final String STRINGS[] = 
            {"02/29/00", "01/23/01", "04/05/-1", "01/23/-9", "11/12/1314", "10/31/1", "09/12/+1", "09/12/001",}; 
        int STRINGS_COUNT = STRINGS.length;
                
        Calendar cal = Calendar.getInstance();
        Date FAIL_DATE = cal.getTime();
        cal.clear();
        cal.set(2000, Calendar.FEBRUARY, 29);
        Date d0 = cal.getTime();
        cal.clear();
        cal.set(2001, Calendar.JANUARY, 23);
        Date d1 = cal.getTime();
        cal.clear();
        cal.set(-1, Calendar.APRIL, 5);
        Date d2 = cal.getTime();
        cal.clear();
        cal.set(-9, Calendar.JANUARY, 23);
        Date d3 = cal.getTime();
        cal.clear();
        cal.set(1314, Calendar.NOVEMBER, 12);
        Date d4 = cal.getTime();
        cal.clear();
        cal.set(1, Calendar.OCTOBER, 31);
        Date d5 = cal.getTime();
        cal.clear();        
        cal.set(1, Calendar.SEPTEMBER, 12);
        Date d7 = cal.getTime();
        Date DATES[] = {d0, d1, d2, d3, d4, d5, FAIL_DATE, d7};
    
        String out = "";
        boolean pass = true;
        for (int i = 0; i < STRINGS_COUNT; ++i) {
            String str = STRINGS[i];
            Date expected = DATES[i];            
            Date actual = null;
            try {
                actual = fmt.parse(str);
            } catch (ParseException e) {
                actual = FAIL_DATE;
            }
            String actStr = "";
            if ((actual.getTime()) == FAIL_DATE.getTime()) {
                actStr += "null";
            } else {
                // Yuck: See j25
                actStr = ((DateFormat) dispFmt).format(actual);
            }
                               
            if (expected.getTime() == (actual.getTime())) {
                out += str + " => " + actStr + "\n";
            } else {
                String expStr = "";
                if (expected.getTime() == FAIL_DATE.getTime()) {
                    expStr += "null";
                } else {
                    // Yuck: See j25
                    expStr = ((DateFormat) dispFmt).format(expected);
                }
                out += "FAIL: " + str + " => " + actStr + ", expected " + expStr + "\n";
                pass = false;
            }
        }
        if (pass) {
            log(out);
        } else {
            err(out);
        }
    }
    
    /**
     * j32 {JDK Bug 4210209 4209272}
     * DateFormat cannot parse Feb 29 2000 when setLenient(false)
     */
    public void Test4210209() {
    
        String pattern = "MMM d, yyyy";
        DateFormat fmt = new SimpleDateFormat(pattern, Locale.US);
        DateFormat disp = new SimpleDateFormat("MMM dd yyyy GG", Locale.US);
    
        Calendar calx = fmt.getCalendar();
        calx.setLenient(false);
        Calendar calendar = Calendar.getInstance();
        calendar.clear();
        calendar.set(2000, Calendar.FEBRUARY, 29);
        Date d = calendar.getTime();
        String s = fmt.format(d);
        logln(disp.format(d) + " f> " + pattern + " => \"" + s + "\"");
        ParsePosition pos = new ParsePosition(0);
        d = fmt.parse(s, pos);
        logln("\"" + s + "\" p> " + pattern + " => " +
              (d!=null?disp.format(d):"null"));
        logln("Parse pos = " + pos.getIndex() + ", error pos = " + pos.getErrorIndex());
        if (pos.getErrorIndex() != -1) {
            errln("FAIL: Error index should be -1");
        }
    
        // The underlying bug is in GregorianCalendar.  If the following lines
        // succeed, the bug is fixed.  If the bug isn't fixed, they will throw
        // an exception.
        GregorianCalendar cal = new GregorianCalendar();
        cal.clear();
        cal.setLenient(false);
        cal.set(2000, Calendar.FEBRUARY, 29); // This should work!
        d = cal.getTime();
        logln("Attempt to set Calendar to Feb 29 2000: " + disp.format(d));
    }
    
    public void Test714() {
        //TimeZone Offset
        TimeZone defaultTZ = TimeZone.getDefault();
        TimeZone PST = TimeZone.getTimeZone("PST");
        int defaultOffset = defaultTZ.getRawOffset();
        int PSTOffset = PST.getRawOffset();
        Date d = new Date(978103543000l - (defaultOffset - PSTOffset));
        d = new Date(d.getTime() - (defaultTZ.inDaylightTime(d) ? 3600000 : 0));
        DateFormat fmt = DateFormat.getDateTimeInstance(-1, DateFormat.MEDIUM, Locale.US);
        String tests = "7:25:43 AM";
        String s = fmt.format(d);
        if (!s.equals(tests)) {
            errln("Fail: " + s + " != " + tests);
        } else {
            logln("OK: " + s + " == " + tests);
        }
    }
}