/*
* Copyright ( c ) 2011 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
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* questions .
*/
/*
* @ test
* @ bug 6772689
* @ summary Test for standard - to - daylight transitions at midnight :
* date stays on the given day .
*/
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.TimeZone;
import static java.util.GregorianCalendar.*;
public class Bug6772689 {
private static final int BEGIN_YEAR = 2035 ;
private static final int END_YEAR = BEGIN_YEAR + 28 ;
public static void main(String[] args) {
TimeZone defaultTimeZone = TimeZone.getDefault();
int errors = 0 ;
Calendar cal = new GregorianCalendar(BEGIN_YEAR, MARCH, 1 );
String[] tzids = TimeZone.getAvailableIDs();
try {
for (String id : tzids) {
TimeZone tz = TimeZone.getTimeZone(id);
if (!tz.useDaylightTime()) {
continue ;
}
TimeZone.setDefault(tz);
dateloop:
// Use future dates because sun.util.calendar.ZoneInfo
// delegates offset transition calculations to a SimpleTimeZone
// (after 2038 as of JDK7).
for (int year = BEGIN_YEAR; year < END_YEAR; year++) {
for (int month = MARCH; month <= NOVEMBER; month++) {
cal.set(year, month, 1 , 15 , 0 , 0 );
int maxDom = cal.getActualMaximum(DAY_OF_MONTH);
for (int dom = 1 ; dom <= maxDom; dom++) {
Date date = new Date(year - 1900 , month, dom);
if (date.getYear()+1900 != year
|| date.getMonth() != month
|| date.getDate() != dom) {
System.err.printf("%s: got %04d-%02d-%02d, expected %04d-%02d-%02d%n" ,
id,
date.getYear() + 1900 ,
date.getMonth() + 1 ,
date.getDate(),
year,
month + 1 ,
dom);
errors++;
break dateloop;
}
}
}
}
}
} finally {
// Restore the default TimeZone.
TimeZone.setDefault(defaultTimeZone);
}
if (errors > 0 ) {
throw new RuntimeException("Transition test failed" );
}
}
}
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