Examples with BasicTimeZone android.icu.util.BasicTimeZone used on opensource projects

Example 1 with BasicTimeZone

use of android.icu.util.BasicTimeZone in project j2objc by google.

the class TimeZoneRuleTest method TestHasEquivalentTransitions.

/*
     * Test cases for HasTimeZoneRules#hasEquivalentTransitions
     */
@Test
public void TestHasEquivalentTransitions() {
    // America/New_York and America/Indiana/Indianapolis are equivalent
    // since 2006
    TimeZone newyork = TimeZone.getTimeZone("America/New_York", TimeZone.TIMEZONE_ICU);
    TimeZone indianapolis = TimeZone.getTimeZone("America/Indiana/Indianapolis", TimeZone.TIMEZONE_ICU);
    TimeZone gmt_5 = TimeZone.getTimeZone("Etc/GMT+5", TimeZone.TIMEZONE_ICU);
    long jan1_1971 = getUTCMillis(1971, Calendar.JANUARY, 1);
    long jan1_2005 = getUTCMillis(2005, Calendar.JANUARY, 1);
    long jan1_2006 = getUTCMillis(2006, Calendar.JANUARY, 1);
    long jan1_2007 = getUTCMillis(2007, Calendar.JANUARY, 1);
    long jan1_2011 = getUTCMillis(2010, Calendar.JANUARY, 1);
    if (((BasicTimeZone) newyork).hasEquivalentTransitions(indianapolis, jan1_2005, jan1_2011)) {
        errln("FAIL: New_York is not equivalent to Indianapolis between 2005 and 2010, but returned true");
    }
    if (!((BasicTimeZone) newyork).hasEquivalentTransitions(indianapolis, jan1_2006, jan1_2011)) {
        errln("FAIL: New_York is equivalent to Indianapolis between 2006 and 2010, but returned false");
    }
    if (!((BasicTimeZone) indianapolis).hasEquivalentTransitions(gmt_5, jan1_1971, jan1_2006)) {
        errln("FAIL: Indianapolis is equivalent to GMT+5 between 1971 and 2005, but returned false");
    }
    if (((BasicTimeZone) indianapolis).hasEquivalentTransitions(gmt_5, jan1_1971, jan1_2007)) {
        errln("FAIL: Indianapolis is not equivalent to GMT+5 between 1971 and 2006, but returned true");
    }
    // Cloned TimeZone
    TimeZone newyork2 = (TimeZone) newyork.clone();
    if (!((BasicTimeZone) newyork).hasEquivalentTransitions(newyork2, jan1_1971, jan1_2011)) {
        errln("FAIL: Cloned TimeZone must have the same transitions");
    }
    if (!((BasicTimeZone) newyork).hasEquivalentTransitions(newyork2, jan1_1971, jan1_2011, true)) {
        errln("FAIL: Cloned TimeZone must have the same transitions");
    }
    // America/New_York and America/Los_Angeles has same DST start rules, but
    // raw offsets are different
    TimeZone losangeles = TimeZone.getTimeZone("America/Los_Angeles", TimeZone.TIMEZONE_ICU);
    if (((BasicTimeZone) newyork).hasEquivalentTransitions(losangeles, jan1_2006, jan1_2011)) {
        errln("FAIL: New_York is not equivalent to Los Angeles, but returned true");
    }
}

Example 2 with BasicTimeZone

use of android.icu.util.BasicTimeZone in project j2objc by google.

the class TimeZoneRuleTest method verifyTransitions.

// Internal utility methods -----------------------------------------
/*
     * Check if a time shift really happens on each transition returned by getNextTransition or
     * getPreviousTransition in the specified time range
     */
private void verifyTransitions(TimeZone tz, long start, long end) {
    BasicTimeZone icutz = (BasicTimeZone) tz;
    long time;
    int[] before = new int[2];
    int[] after = new int[2];
    TimeZoneTransition tzt0;
    // Ascending
    tzt0 = null;
    time = start;
    while (true) {
        TimeZoneTransition tzt = icutz.getNextTransition(time, false);
        if (tzt == null) {
            break;
        }
        time = tzt.getTime();
        if (time >= end) {
            break;
        }
        icutz.getOffset(time, false, after);
        icutz.getOffset(time - 1, false, before);
        if (after[0] == before[0] && after[1] == before[1]) {
            errln("FAIL: False transition returned by getNextTransition for " + icutz.getID() + " at " + time);
        }
        if (tzt0 != null && (tzt0.getTo().getRawOffset() != tzt.getFrom().getRawOffset() || tzt0.getTo().getDSTSavings() != tzt.getFrom().getDSTSavings())) {
            errln("FAIL: TO rule of the previous transition does not match FROM rule of this transtion at " + time + " for " + icutz.getID());
        }
        tzt0 = tzt;
    }
    // Descending
    tzt0 = null;
    time = end;
    while (true) {
        TimeZoneTransition tzt = icutz.getPreviousTransition(time, false);
        if (tzt == null) {
            break;
        }
        time = tzt.getTime();
        if (time <= start) {
            break;
        }
        icutz.getOffset(time, false, after);
        icutz.getOffset(time - 1, false, before);
        if (after[0] == before[0] && after[1] == before[1]) {
            errln("FAIL: False transition returned by getPreviousTransition for " + icutz.getID() + " at " + time);
        }
        if (tzt0 != null && (tzt0.getFrom().getRawOffset() != tzt.getTo().getRawOffset() || tzt0.getFrom().getDSTSavings() != tzt.getTo().getDSTSavings())) {
            errln("FAIL: TO rule of the next transition does not match FROM rule in this transtion at " + time + " for " + icutz.getID());
        }
        tzt0 = tzt;
    }
}

Example 3 with BasicTimeZone

use of android.icu.util.BasicTimeZone in project j2objc by google.

the class TimeZoneRuleTest method compareTransitionsDescending.

/*
     * Compare all time transitions in 2 time zones in the specified time range in descending order
     */
private void compareTransitionsDescending(TimeZone tz1, TimeZone tz2, long start, long end, boolean inclusive) {
    BasicTimeZone z1 = (BasicTimeZone) tz1;
    BasicTimeZone z2 = (BasicTimeZone) tz2;
    String zid1 = tz1.getID();
    String zid2 = tz2.getID();
    long time = end;
    while (true) {
        TimeZoneTransition tzt1 = z1.getPreviousTransition(time, inclusive);
        TimeZoneTransition tzt2 = z2.getPreviousTransition(time, inclusive);
        boolean inRange1 = false;
        boolean inRange2 = false;
        if (tzt1 != null) {
            if (tzt1.getTime() > start || (inclusive && tzt1.getTime() == start)) {
                inRange1 = true;
            }
        }
        if (tzt2 != null) {
            if (tzt2.getTime() > start || (inclusive && tzt2.getTime() == start)) {
                inRange2 = true;
            }
        }
        if (!inRange1 && !inRange2) {
            // No more transition in the range
            break;
        }
        if (!inRange1) {
            errln("FAIL: " + zid1 + " does not have any transitions before " + time + " after " + start);
            break;
        }
        if (!inRange2) {
            errln("FAIL: " + zid2 + " does not have any transitions before " + time + " after " + start);
            break;
        }
        if (tzt1.getTime() != tzt2.getTime()) {
            errln("FAIL: Last transition before " + time + " " + zid1 + "[" + tzt1.getTime() + "] " + zid2 + "[" + tzt2.getTime() + "]");
            break;
        }
        time = tzt1.getTime();
        if (inclusive) {
            time--;
        }
    }
}

Example 4 with BasicTimeZone

use of android.icu.util.BasicTimeZone in project j2objc by google.

the class TimeZoneRuleTest method TestVTimeZoneRoundTripPartial.

/*
     * Write out time zone rules of OlsonTimeZone after a cutoff date into VTIMEZONE format,
     * create a new VTimeZone from the VTIMEZONE data, then compare transitions
     */
@Test
public void TestVTimeZoneRoundTripPartial() {
    long[] startTimes = new long[] { getUTCMillis(1900, Calendar.JANUARY, 1), getUTCMillis(1950, Calendar.JANUARY, 1), getUTCMillis(2020, Calendar.JANUARY, 1) };
    long endTime = getUTCMillis(2050, Calendar.JANUARY, 1);
    String[] tzids = getTestZIDs();
    for (int n = 0; n < startTimes.length; n++) {
        long startTime = startTimes[n];
        for (int i = 0; i < tzids.length; i++) {
            BasicTimeZone olsontz = (BasicTimeZone) TimeZone.getTimeZone(tzids[i], TimeZone.TIMEZONE_ICU);
            VTimeZone vtz_org = VTimeZone.create(tzids[i]);
            VTimeZone vtz_new = null;
            try {
                // Write out VTIMEZONE
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                OutputStreamWriter writer = new OutputStreamWriter(baos);
                vtz_org.write(writer, startTime);
                writer.close();
                byte[] vtzdata = baos.toByteArray();
                // Read VTIMEZONE
                ByteArrayInputStream bais = new ByteArrayInputStream(vtzdata);
                InputStreamReader reader = new InputStreamReader(bais);
                vtz_new = VTimeZone.create(reader);
                reader.close();
            } catch (IOException ioe) {
                errln("FAIL: IO error while writing/reading VTIMEZONE data");
            }
            // VTIMEZONE.
            if (vtz_new.getOffset(startTime) != olsontz.getOffset(startTime)) {
                errln("FAIL: VTimeZone for " + tzids[i] + " is not equivalent to its OlsonTimeZone corresponding at " + startTime);
            }
            TimeZoneTransition tzt = olsontz.getNextTransition(startTime, false);
            if (tzt != null) {
                if (!vtz_new.hasEquivalentTransitions(olsontz, tzt.getTime(), endTime, true)) {
                    int maxDelta = 1000;
                    if (!hasEquivalentTransitions(vtz_new, olsontz, tzt.getTime() + maxDelta, endTime, true, maxDelta)) {
                        errln("FAIL: VTimeZone for " + tzids[i] + "(>=" + startTime + ") is not equivalent to its OlsonTimeZone corresponding.");
                    } else {
                        logln("VTimeZone for " + tzids[i] + "(>=" + startTime + ")  differs from its OlsonTimeZone corresponding with maximum transition time delta - " + maxDelta);
                    }
                }
            }
        }
    }
}

Example 5 with BasicTimeZone

use of android.icu.util.BasicTimeZone in project j2objc by google.

the class TimeZoneTest method TestObservesDaylightTime.

@Test
public void TestObservesDaylightTime() {
    boolean observesDaylight;
    long current = System.currentTimeMillis();
    // J2ObjC change: time zones going through adjustments are problematic when comparing
    // the ICU tz data vs. the operating system tz data.
    Set<String> unstableTzids = new HashSet<>();
    // https://github.com/eggert/tz/blob/379f7ba9b81eee97f0209a322540b4a522122b5d/africa#L847
    unstableTzids.add("Africa/Casablanca");
    unstableTzids.add("Africa/El_Aaiun");
    String[] tzids = TimeZone.getAvailableIDs();
    for (String tzid : tzids) {
        // OlsonTimeZone
        TimeZone tz = TimeZone.getTimeZone(tzid, TimeZone.TIMEZONE_ICU);
        observesDaylight = tz.observesDaylightTime();
        if (observesDaylight != isDaylightTimeAvailable(tz, current)) {
            errln("Fail: [OlsonTimeZone] observesDaylightTime() returned " + observesDaylight + " for " + tzid);
        }
        // RuleBasedTimeZone
        RuleBasedTimeZone rbtz = createRBTZ((BasicTimeZone) tz, current);
        boolean observesDaylightRBTZ = rbtz.observesDaylightTime();
        if (observesDaylightRBTZ != isDaylightTimeAvailable(rbtz, current)) {
            errln("Fail: [RuleBasedTimeZone] observesDaylightTime() returned " + observesDaylightRBTZ + " for " + rbtz.getID());
        } else if (observesDaylight != observesDaylightRBTZ) {
            errln("Fail: RuleBasedTimeZone " + rbtz.getID() + " returns " + observesDaylightRBTZ + ", but different from match OlsonTimeZone");
        }
        // JavaTimeZone
        tz = TimeZone.getTimeZone(tzid, TimeZone.TIMEZONE_JDK);
        observesDaylight = tz.observesDaylightTime();
        if (!unstableTzids.contains(tzid) && observesDaylight != isDaylightTimeAvailable(tz, current)) {
            errln("Fail: [JavaTimeZone] observesDaylightTime() returned " + observesDaylight + " for " + tzid);
        }
        // VTimeZone
        tz = VTimeZone.getTimeZone(tzid);
        observesDaylight = tz.observesDaylightTime();
        if (observesDaylight != isDaylightTimeAvailable(tz, current)) {
            errln("Fail: [VTimeZone] observesDaylightTime() returned " + observesDaylight + " for " + tzid);
        }
    }
    // SimpleTimeZone
    SimpleTimeZone[] stzs = { new SimpleTimeZone(0, "STZ0"), new SimpleTimeZone(-5 * 60 * 60 * 1000, "STZ-5D", Calendar.MARCH, 2, Calendar.SUNDAY, 2 * 60 * 60 * 1000, Calendar.NOVEMBER, 1, Calendar.SUNDAY, 2 * 60 * 60 * 1000) };
    for (SimpleTimeZone stz : stzs) {
        observesDaylight = stz.observesDaylightTime();
        if (observesDaylight != isDaylightTimeAvailable(stz, current)) {
            errln("Fail: [SimpleTimeZone] observesDaylightTime() returned " + observesDaylight + " for " + stz.getID());
        }
    }
}