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/**
* @test
* @bug 7130335
* @summary Make sure that round-trip conversion (format/parse) works
* with old timestamps in Europe/Moscow.
*/
import java.text.*;
import java.util.*;
public class Bug7130335 {
private static final TimeZone MOSCOW = TimeZone.getTimeZone("Europe/Moscow");
public static void main(String[] args) throws Exception {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS z", Locale.US);
sdf.setTimeZone(MOSCOW);
Calendar cal = new GregorianCalendar(MOSCOW);
cal.clear();
// Try both +03:00 and +02:00
cal.set(1922, Calendar.SEPTEMBER, 30);
test(sdf, cal);
cal.add(Calendar.DAY_OF_YEAR, 1);
test(sdf, cal);
cal.set(1991, Calendar.MARCH, 31);
// in daylight saving time
test(sdf, cal);
cal.add(Calendar.DAY_OF_YEAR, 1);
test(sdf, cal);
// Try the current timestamp
cal.setTimeInMillis(System.currentTimeMillis());
test(sdf, cal);
}
private static void test(SimpleDateFormat sdf, Calendar cal) throws Exception {
Date d = cal.getTime();
String f = sdf.format(d);
System.out.println(f);
Date pd = sdf.parse(f);
String p = sdf.format(pd);
if (!d.equals(pd) || !f.equals(p)) {
throw new RuntimeException("format: " + f + ", parse: " + p);
}
}
}