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/*
* Copyright (c) 2005, 2019, 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6231602
* @summary Make sure that ZONE_OFFSET and/or DST_OFFSET setting is
* taken into account for time calculations.
*/
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;
import java.util.TimeZone;
import static java.util.GregorianCalendar.*;
public class ZoneOffsets {
// This TimeZone always returns the dstOffset value.
@SuppressWarnings("serial")
private static class TestTimeZone extends TimeZone {
private int gmtOffset;
private int dstOffset;
TestTimeZone(int gmtOffset, String id, int dstOffset) {
this.gmtOffset = gmtOffset;
setID(id);
this.dstOffset = dstOffset;
}
public int getOffset(int era, int year, int month, int day,
int dayOfWeek, int milliseconds) {
return gmtOffset + dstOffset;
}
public int getOffset(long date) {
return gmtOffset + dstOffset;
}
public void setRawOffset(int offsetMillis) {
gmtOffset = offsetMillis;
}
public int getRawOffset() {
return gmtOffset;
}
public int getDSTSavings() {
return dstOffset;
}
public boolean useDaylightTime() {
return dstOffset != 0;
}
public boolean inDaylightTime(Date date) {
return dstOffset != 0;
}
public String toString() {
return "TestTimeZone[" + getID() + ", " + gmtOffset + ", " + dstOffset + "]";
}
}
private static Locale[] locales = {
Locale.getDefault(),
new Locale("th", "TH"),
new Locale("ja", "JP", "JP")};
private static final int HOUR = 60 * 60 * 1000;
private static int[][] offsets = {
{0, 0},
{0, HOUR},
{0, 2 * HOUR},
{-8 * HOUR, 0},
{-8 * HOUR, HOUR},
{-8 * HOUR, 2 * HOUR},
{9 * HOUR, 0},
{9 * HOUR, HOUR},
{9 * HOUR, 2 * HOUR}};
public static void main(String[] args) {
for (int l = 0; l < locales.length; l++) {
Locale loc = locales[l];
for (int i = 0; i < offsets.length; i++) {
test(loc, offsets[i][0], offsets[i][1]);
}
}
// The test case in the bug report.
GregorianCalendar cal = new GregorianCalendar();
cal.setLenient(false);
cal.setGregorianChange(new Date(Long.MIN_VALUE));
cal.clear();
cal.set(ZONE_OFFSET, 0);
cal.set(DST_OFFSET, 0);
cal.set(ERA, AD);
cal.set(2004, FEBRUARY, 3, 0, 0, 0);
cal.set(MILLISECOND, 0);
// The following line should not throw an IllegalArgumentException.
cal.getTime();
}
private static void test(Locale loc, int gmtOffset, int dstOffset) {
TimeZone tz1 = new TestTimeZone(gmtOffset,
"GMT" + (gmtOffset / HOUR) + "." + (dstOffset / HOUR),
dstOffset);
int someDifferentOffset = gmtOffset + 2 * HOUR;
TimeZone tz2 = new TestTimeZone(someDifferentOffset,
"GMT" + (someDifferentOffset / HOUR) + "." + (dstOffset / HOUR),
dstOffset);
int someDifferentDSTOffset = dstOffset == 2 * HOUR ? HOUR : dstOffset + HOUR;
TimeZone tz3 = new TestTimeZone(gmtOffset,
"GMT" + (gmtOffset / HOUR) + "." + (someDifferentDSTOffset / HOUR),
someDifferentDSTOffset);
// cal1 is the base line.
Calendar cal1 = Calendar.getInstance(tz1, loc);
cal1.clear();
cal1.set(2005, MARCH, 11);
long t1 = cal1.getTime().getTime();
int gmt = cal1.get(ZONE_OFFSET);
int dst = cal1.get(DST_OFFSET);
// Test 8 cases with cal2.
Calendar cal2 = Calendar.getInstance(tz2, loc);
cal2.clear();
cal2.set(2005, MARCH, 11);
// test1: set only ZONE_OFFSET
cal2.set(ZONE_OFFSET, gmtOffset);
if (t1 != cal2.getTime().getTime() || dst != cal2.get(DST_OFFSET)) {
error("Test1", loc, cal2, gmtOffset, dstOffset, t1);
}
cal2.setTimeZone(tz3);
cal2.clear();
cal2.set(2005, MARCH, 11);
// test2: set only DST_OFFSET
cal2.set(DST_OFFSET, dstOffset);
if (t1 != cal2.getTime().getTime() || gmt != cal2.get(ZONE_OFFSET)) {
error("Test2", loc, cal2, gmtOffset, dstOffset, t1);
}
cal2.setTimeZone(tz2);
cal2.clear();
cal2.set(2005, MARCH, 11);
// test3: set both ZONE_OFFSET and DST_OFFSET
cal2.set(ZONE_OFFSET, gmtOffset);
cal2.set(DST_OFFSET, dstOffset);
if (t1 != cal2.getTime().getTime()) {
error("Test3", loc, cal2, gmtOffset, dstOffset, t1);
}
cal2.setTimeZone(tz3);
cal2.clear();
cal2.set(2005, MARCH, 11);
// test4: set both ZONE_OFFSET and DST_OFFSET
cal2.set(ZONE_OFFSET, gmtOffset);
cal2.set(DST_OFFSET, dstOffset);
if (t1 != cal2.getTime().getTime()) {
error("Test4", loc, cal2, gmtOffset, dstOffset, t1);
}
// Test the same thing in non-lenient
cal2.setLenient(false);
cal2.setTimeZone(tz2);
cal2.clear();
cal2.set(2005, MARCH, 11);
adjustJapaneseEra(cal2);
// test5: set only ZONE_OFFSET in non-lenient
cal2.set(ZONE_OFFSET, gmtOffset);
if (t1 != cal2.getTime().getTime() || dst != cal2.get(DST_OFFSET)) {
error("Test5", loc, cal2, gmtOffset, dstOffset, t1);
}
cal2.setTimeZone(tz3);
cal2.clear();
cal2.set(2005, MARCH, 11);
adjustJapaneseEra(cal2);
// test6: set only DST_OFFSET in non-lenient
cal2.set(DST_OFFSET, dstOffset);
if (t1 != cal2.getTime().getTime() || gmt != cal2.get(ZONE_OFFSET)) {
error("Test6", loc, cal2, gmtOffset, dstOffset, t1);
}
cal2.setTimeZone(tz2);
cal2.clear();
cal2.set(2005, MARCH, 11);
adjustJapaneseEra(cal2);
// test7: set both ZONE_OFFSET and DST_OFFSET in non-lenient
cal2.set(ZONE_OFFSET, gmtOffset);
cal2.set(DST_OFFSET, dstOffset);
if (t1 != cal2.getTime().getTime()) {
error("Test7", loc, cal2, gmtOffset, dstOffset, t1);
}
cal2.setTimeZone(tz3);
cal2.clear();
cal2.set(2005, MARCH, 11);
adjustJapaneseEra(cal2);
// test8: set both ZONE_OFFSET and DST_OFFSET in non-lenient
cal2.set(ZONE_OFFSET, gmtOffset);
cal2.set(DST_OFFSET, dstOffset);
if (t1 != cal2.getTime().getTime()) {
error("Test8", loc, cal2, gmtOffset, dstOffset, t1);
}
}
private static void error(String msg, Locale loc, Calendar cal2, int gmtOffset, int dstOffset, long t1) {
System.err.println(cal2);
throw new RuntimeException(msg + ": Locale=" + loc
+ ", gmtOffset=" + gmtOffset + ", dstOffset=" + dstOffset
+ ", cal1 time=" + t1 + ", cal2 time=" + cal2.getTime().getTime());
}
private static void adjustJapaneseEra(Calendar cal) {
// In case of Japanese calendar, explicitly set the last era; REIWA so that
// year 2005 won't throw exception
if (!cal.isLenient() &&
cal.getCalendarType().equals("japanese") &&
System.currentTimeMillis() < 1556668800000L) { // Current time not in REIWA
cal.set(Calendar.ERA, 5);
cal.add(Calendar.YEAR, -30); // -30: Subtract year-length of HEISEI era
}
return;
}
}
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