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/*
* @ test
* @ bug 8007520 8008254
* @ summary Test those bridge methods to / from java . time date / time classes
* @ key randomness
*/
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZonedDateTime;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Random;
import java.util.TimeZone;
public class JavatimeTest {
static final int NANOS_PER_SECOND = 1000 _000 _000 ;
public static void main(String[] args) throws Throwable {
int N = 10000 ;
@SuppressWarnings("deprecation" )
long t1970 = new java.util.Date(70 , 0 , 01 ).getTime();
Random r = new Random();
for (int i = 0 ; i < N; i++) {
int days = r.nextInt(50 ) * 365 + r.nextInt(365 );
long secs = t1970 + days * 86400 + r.nextInt(86400 );
int nanos = r.nextInt(NANOS_PER_SECOND);
int nanos_ms = nanos / 1000000 * 1000000 ; // millis precision
long millis = secs * 1000 + r.nextInt(1000 );
LocalDateTime ldt = LocalDateTime.ofEpochSecond(secs, nanos, ZoneOffset.UTC);
LocalDateTime ldt_ms = LocalDateTime.ofEpochSecond(secs, nanos_ms, ZoneOffset.UTC);
Instant inst = Instant.ofEpochSecond(secs, nanos);
Instant inst_ms = Instant.ofEpochSecond(secs, nanos_ms);
///////////// java.util.Date /////////////////////////
Date jud = new java.util.Date(millis);
Instant inst0 = jud.toInstant();
if (jud.getTime() != inst0.toEpochMilli()
|| !jud.equals(Date.from(inst0))) {
System.out.printf("ms: %16d ns: %10d ldt:[%s]%n" , millis, nanos, ldt);
throw new RuntimeException("FAILED: j.u.d -> instant -> j.u.d" );
}
// roundtrip only with millis precision
Date jud0 = Date.from(inst_ms);
if (jud0.getTime() != inst_ms.toEpochMilli()
|| !inst_ms.equals(jud0.toInstant())) {
System.out.printf("ms: %16d ns: %10d ldt:[%s]%n" , millis, nanos, ldt);
throw new RuntimeException("FAILED: instant -> j.u.d -> instant" );
}
//////////// java.util.GregorianCalendar /////////////
GregorianCalendar cal = new GregorianCalendar();
// non-roundtrip of tz name between j.u.tz and j.t.zid
cal.setTimeZone(TimeZone.getTimeZone(ZoneId.systemDefault()));
cal.setGregorianChange(new java.util.Date(Long .MIN_VALUE));
cal.setFirstDayOfWeek(Calendar.MONDAY);
cal.setMinimalDaysInFirstWeek(4 );
cal.setTimeInMillis(millis);
ZonedDateTime zdt0 = cal.toZonedDateTime();
if (cal.getTimeInMillis() != zdt0.toInstant().toEpochMilli()
|| !cal.equals(GregorianCalendar.from(zdt0))) {
System.out.println("cal:" + cal);
System.out.println("zdt:" + zdt0);
System.out.println("calNew:" + GregorianCalendar.from(zdt0));
System.out.printf("ms: %16d ns: %10d ldt:[%s]%n" , millis, nanos, ldt);
throw new RuntimeException("FAILED: gcal -> zdt -> gcal" );
}
inst0 = cal.toInstant();
if (cal.getTimeInMillis() != inst0.toEpochMilli()) {
System.out.printf("ms: %16d ns: %10d ldt:[%s]%n" , millis, nanos, ldt);
throw new RuntimeException("FAILED: gcal -> zdt" );
}
ZonedDateTime zdt = ZonedDateTime.of(ldt_ms, ZoneId.systemDefault());
GregorianCalendar cal0 = GregorianCalendar.from(zdt);
if (zdt.toInstant().toEpochMilli() != cal0.getTimeInMillis()
|| !zdt.equals(GregorianCalendar.from(zdt).toZonedDateTime())) {
System.out.printf("ms: %16d ns: %10d ldt:[%s]%n" , millis, nanos, ldt);
throw new RuntimeException("FAILED: zdt -> gcal -> zdt" );
}
}
///////////// java.util.TimeZone /////////////////////////
for (String zidStr : TimeZone.getAvailableIDs()) {
// TBD: tzdt intergration
if (zidStr.startsWith("SystemV" )
|| zidStr.contains("Riyadh8" )
|| zidStr.equals("US/Pacific-New" )
|| zidStr.equals("EST" )
|| zidStr.equals("HST" )
|| zidStr.equals("MST" )) {
continue ;
}
ZoneId zid = ZoneId.of(zidStr, ZoneId.SHORT_IDS);
if (!zid.equals(TimeZone.getTimeZone(zid).toZoneId())) {
throw new RuntimeException("FAILED: zid -> tz -> zid :" + zidStr);
}
TimeZone tz = TimeZone.getTimeZone(zidStr);
// no round-trip for alias and "GMT"
if (!tz.equals(TimeZone.getTimeZone(tz.toZoneId()))
&& !ZoneId.SHORT_IDS.containsKey(zidStr)
&& !zidStr.startsWith("GMT" )) {
throw new RuntimeException("FAILED: tz -> zid -> tz :" + zidStr);
}
}
System.out.println("Passed!" );
}
}
Messung V0.5 in Prozent C=95 H=92 G=93
¤ Dauer der Verarbeitung: 0.3 Sekunden
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