/*
********************************************************************************
* Copyright (C) 2007-2009, Google, International Business Machines Corporation *
* and others. All Rights Reserved. *
********************************************************************************
*/
package com.ibm.icu.dev.test.format;
import java.text.ParseException;
import java.text.ParsePosition;
import java.util.Date;
import com.ibm.icu.lang.UCharacter;
import com.ibm.icu.text.SimpleDateFormat;
import com.ibm.icu.util.BasicTimeZone;
import com.ibm.icu.util.Calendar;
import com.ibm.icu.util.SimpleTimeZone;
import com.ibm.icu.util.TimeZone;
import com.ibm.icu.util.TimeZoneTransition;
import com.ibm.icu.util.ULocale;
public class TimeZoneFormatTest extends com.ibm.icu.dev.test.TestFmwk {
public static void main(String[] args) throws Exception {
new TimeZoneFormatTest().run(args);
}
private static final String[] PATTERNS = {"z", "zzzz", "Z", "ZZZZ", "v", "vvvv", "V", "VVVV"};
/*
* Test case for checking if a TimeZone is properly set in the result calendar
* and if the result TimeZone has the expected behavior.
*/
public void TestTimeZoneRoundTrip() {
TimeZone unknownZone = new SimpleTimeZone(-31415, "Etc/Unknown");
int badDstOffset = -1234;
int badZoneOffset = -2345;
int[][] testDateData = {
{2007, 1, 15},
{2007, 6, 15},
{1990, 1, 15},
{1990, 6, 15},
{1960, 1, 15},
{1960, 6, 15},
};
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.clear();
// Set up rule equivalency test range
long low, high;
cal.set(1900, 0, 1);
low = cal.getTimeInMillis();
cal.set(2040, 0, 1);
high = cal.getTimeInMillis();
// Set up test dates
Date[] DATES = new Date[testDateData.length];
cal.clear();
for (int i = 0; i < DATES.length; i++) {
cal.set(testDateData[i][0], testDateData[i][1], testDateData[i][2]);
DATES[i] = cal.getTime();
}
// Set up test locales
ULocale[] LOCALES = null;
if (getInclusion() > 5) {
LOCALES = ULocale.getAvailableLocales();
} else {
LOCALES = new ULocale[] {new ULocale("en"), new ULocale("en_CA"), new ULocale("fr"), new ULocale("zh_Hant")};
}
String[] tzids = TimeZone.getAvailableIDs();
int[] inOffsets = new int[2];
int[] outOffsets = new int[2];
// Run the roundtrip test
for (int locidx = 0; locidx < LOCALES.length; locidx++) {
for (int patidx = 0; patidx < PATTERNS.length; patidx++) {
SimpleDateFormat sdf = new SimpleDateFormat(PATTERNS[patidx], LOCALES[locidx]);
for (int tzidx = 0; tzidx < tzids.length; tzidx++) {
TimeZone tz = TimeZone.getTimeZone(tzids[tzidx]);
for (int datidx = 0; datidx < DATES.length; datidx++) {
// Format
sdf.setTimeZone(tz);
String tzstr = sdf.format(DATES[datidx]);
// Before parse, set unknown zone to SimpleDateFormat instance
// just for making sure that it does not depends on the time zone
// originally set.
sdf.setTimeZone(unknownZone);
// Parse
ParsePosition pos = new ParsePosition(0);
Calendar outcal = Calendar.getInstance(unknownZone);
outcal.set(Calendar.DST_OFFSET, badDstOffset);
outcal.set(Calendar.ZONE_OFFSET, badZoneOffset);
sdf.parse(tzstr, outcal, pos);
// Check the result
TimeZone outtz = outcal.getTimeZone();
tz.getOffset(DATES[datidx].getTime(), false, inOffsets);
outtz.getOffset(DATES[datidx].getTime(), false, outOffsets);
if (PATTERNS[patidx].equals("VVVV")) {
// Location: time zone rule must be preserved except
// zones not actually associated with a specific location.
// Time zones in this category do not have "/" in its ID.
String canonicalID = TimeZone.getCanonicalID(tzids[tzidx]);
if (canonicalID != null && !outtz.getID().equals(canonicalID)) {
// Canonical ID did not match - check the rules
boolean bFailure = false;
if ((tz instanceof BasicTimeZone) && (outtz instanceof BasicTimeZone)) {
bFailure = !(canonicalID.indexOf('/') == -1)
&& !((BasicTimeZone)outtz).hasEquivalentTransitions(tz, low, high);
}
if (bFailure) {
errln("Canonical round trip failed; tz=" + tzids[tzidx]
+ ", locale=" + LOCALES[locidx] + ", pattern=" + PATTERNS[patidx]
+ ", time=" + DATES[datidx].getTime() + ", str=" + tzstr
+ ", outtz=" + outtz.getID());
} else {
logln("Canonical round trip failed (as expected); tz=" + tzids[tzidx]
+ ", locale=" + LOCALES[locidx] + ", pattern=" + PATTERNS[patidx]
+ ", time=" + DATES[datidx].getTime() + ", str=" + tzstr
+ ", outtz=" + outtz.getID());
}
}
} else {
// Check if localized GMT format or RFC format is used.
int numDigits = 0;
for (int n = 0; n < tzstr.length(); n++) {
if (UCharacter.isDigit(tzstr.charAt(n))) {
numDigits++;
}
}
if (numDigits >= 3) {
// Localized GMT or RFC: total offset (raw + dst) must be preserved.
int inOffset = inOffsets[0] + inOffsets[1];
int outOffset = outOffsets[0] + outOffsets[1];
if (inOffset != outOffset) {
errln("Offset round trip failed; tz=" + tzids[tzidx]
+ ", locale=" + LOCALES[locidx] + ", pattern=" + PATTERNS[patidx]
+ ", time=" + DATES[datidx].getTime() + ", str=" + tzstr
+ ", inOffset=" + inOffset + ", outOffset=" + outOffset);
}
} else {
// Specific or generic: raw offset must be preserved.
if (inOffsets[0] != outOffsets[0]) {
if (TimeZone.getDefaultTimeZoneType() == TimeZone.TIMEZONE_JDK
&& tzids[tzidx].startsWith("SystemV/")) {
// JDK uses rule SystemV for these zones while
// ICU handles these zones as aliases of existing time zones
logln("Raw offset round trip failed; tz=" + tzids[tzidx]
+ ", locale=" + LOCALES[locidx] + ", pattern=" + PATTERNS[patidx]
+ ", time=" + DATES[datidx].getTime() + ", str=" + tzstr
+ ", inRawOffset=" + inOffsets[0] + ", outRawOffset=" + outOffsets[0]);
} else {
errln("Raw offset round trip failed; tz=" + tzids[tzidx]
+ ", locale=" + LOCALES[locidx] + ", pattern=" + PATTERNS[patidx]
+ ", time=" + DATES[datidx].getTime() + ", str=" + tzstr
+ ", inRawOffset=" + inOffsets[0] + ", outRawOffset=" + outOffsets[0]);
}
}
}
}
}
}
}
}
}
/*
* Test case of round trip time and text. This test case detects every canonical TimeZone's
* rule transition since 1900 until 2020, then check if time around each transition can
* round trip as expected.
*/
public void TestTimeRoundTrip() {
boolean TEST_ALL = "true".equalsIgnoreCase(getProperty("TimeZoneRoundTripAll"));
int startYear, endYear;
if (TEST_ALL || getInclusion() > 5) {
startYear = 1900;
} else {
startYear = 1990;
}
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
endYear = cal.get(Calendar.YEAR) + 3;
cal.set(startYear, Calendar.JANUARY, 1);
final long START_TIME = cal.getTimeInMillis();
cal.set(endYear, Calendar.JANUARY, 1);
final long END_TIME = cal.getTimeInMillis();
// Whether each pattern is ambiguous at DST->STD local time overlap
final boolean[] AMBIGUOUS_DST_DECESSION = {false, false, false, false, true, true, false, true};
// Whether each pattern is ambiguous at STD->STD/DST->DST local time overlap
final boolean[] AMBIGUOUS_NEGATIVE_SHIFT = {true, true, false, false, true, true, true, true};
final String BASEPATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSS";
ULocale[] LOCALES = null;
boolean REALLY_VERBOSE = false;
// timer for performance analysis
long[] times = new long[PATTERNS.length];
long timer;
if (TEST_ALL) {
// It may take about an hour for testing all locales
LOCALES = ULocale.getAvailableLocales();
} else if (getInclusion() > 5) {
LOCALES = new ULocale[] {
new ULocale("ar_EG"), new ULocale("bg_BG"), new ULocale("ca_ES"), new ULocale("da_DK"), new ULocale("de"),
new ULocale("de_DE"), new ULocale("el_GR"), new ULocale("en"), new ULocale("en_AU"), new ULocale("en_CA"),
new ULocale("en_US"), new ULocale("es"), new ULocale("es_ES"), new ULocale("es_MX"), new ULocale("fi_FI"),
new ULocale("fr"), new ULocale("fr_CA"), new ULocale("fr_FR"), new ULocale("he_IL"), new ULocale("hu_HU"),
new ULocale("it"), new ULocale("it_IT"), new ULocale("ja"), new ULocale("ja_JP"), new ULocale("ko"),
new ULocale("ko_KR"), new ULocale("nb_NO"), new ULocale("nl_NL"), new ULocale("nn_NO"), new ULocale("pl_PL"),
new ULocale("pt"), new ULocale("pt_BR"), new ULocale("pt_PT"), new ULocale("ru_RU"), new ULocale("sv_SE"),
new ULocale("th_TH"), new ULocale("tr_TR"), new ULocale("zh"), new ULocale("zh_Hans"), new ULocale("zh_Hans_CN"),
new ULocale("zh_Hant"), new ULocale("zh_Hant_HK"), new ULocale("zh_Hant_TW")
};
} else {
LOCALES = new ULocale[] {
new ULocale("en"),
};
}
SimpleDateFormat sdfGMT = new SimpleDateFormat(BASEPATTERN);
sdfGMT.setTimeZone(TimeZone.getTimeZone("Etc/GMT"));
long testCounts = 0;
long[] testTimes = new long[4];
boolean[] expectedRoundTrip = new boolean[4];
int testLen = 0;
for (int locidx = 0; locidx < LOCALES.length; locidx++) {
logln("Locale: " + LOCALES[locidx].toString());
for (int patidx = 0; patidx < PATTERNS.length; patidx++) {
logln(" pattern: " + PATTERNS[patidx]);
String pattern = BASEPATTERN + " " + PATTERNS[patidx];
SimpleDateFormat sdf = new SimpleDateFormat(pattern, LOCALES[locidx]);
String[] ids = TimeZone.getAvailableIDs();
for (int zidx = 0; zidx < ids.length; zidx++) {
String id = TimeZone.getCanonicalID(ids[zidx]);
if (id == null || !id.equals(ids[zidx])) {
// Skip aliases
continue;
}
BasicTimeZone btz = (BasicTimeZone)TimeZone.getTimeZone(ids[zidx], TimeZone.TIMEZONE_ICU);
TimeZone tz = TimeZone.getTimeZone(ids[zidx]);
sdf.setTimeZone(tz);
long t = START_TIME;
TimeZoneTransition tzt = null;
boolean middle = true;
while (t < END_TIME) {
if (tzt == null) {
testTimes[0] = t;
expectedRoundTrip[0] = true;
testLen = 1;
} else {
int fromOffset = tzt.getFrom().getRawOffset() + tzt.getFrom().getDSTSavings();
int toOffset = tzt.getTo().getRawOffset() + tzt.getTo().getDSTSavings();
int delta = toOffset - fromOffset;
if (delta < 0) {
boolean isDstDecession = tzt.getFrom().getDSTSavings() > 0 && tzt.getTo().getDSTSavings() == 0;
testTimes[0] = t + delta - 1;
expectedRoundTrip[0] = true;
testTimes[1] = t + delta;
expectedRoundTrip[1] = isDstDecession ?
!AMBIGUOUS_DST_DECESSION[patidx] : !AMBIGUOUS_NEGATIVE_SHIFT[patidx];
testTimes[2] = t - 1;
expectedRoundTrip[2] = isDstDecession ?
!AMBIGUOUS_DST_DECESSION[patidx] : !AMBIGUOUS_NEGATIVE_SHIFT[patidx];
testTimes[3] = t;
expectedRoundTrip[3] = true;
testLen = 4;
} else {
testTimes[0] = t - 1;
expectedRoundTrip[0] = true;
testTimes[1] = t;
expectedRoundTrip[1] = true;
testLen = 2;
}
}
for (int testidx = 0; testidx < testLen; testidx++) {
testCounts++;
timer = System.currentTimeMillis();
String text = sdf.format(new Date(testTimes[testidx]));
try {
Date parsedDate = sdf.parse(text);
long restime = parsedDate.getTime();
if (restime != testTimes[testidx]) {
StringBuffer msg = new StringBuffer();
msg.append("Time round trip failed for ")
.append("tzid=").append(ids[zidx])
.append(", locale=").append(LOCALES[locidx])
.append(", pattern=").append(PATTERNS[patidx])
.append(", text=").append(text)
.append(", gmt=").append(sdfGMT.format(new Date(testTimes[testidx])))
.append(", time=").append(testTimes[testidx])
.append(", restime=").append(restime)
.append(", diff=").append(restime - testTimes[testidx]);
if (expectedRoundTrip[testidx]) {
errln("FAIL: " + msg.toString());
} else if (REALLY_VERBOSE) {
logln(msg.toString());
}
}
} catch (ParseException pe) {
errln("FAIL: " + pe.getMessage());
}
times[patidx] += System.currentTimeMillis() - timer;
}
tzt = btz.getNextTransition(t, false);
if (tzt == null) {
break;
}
if (middle) {
// Test the date in the middle of two transitions.
t += (tzt.getTime() - t)/2;
middle = false;
tzt = null;
} else {
t = tzt.getTime();
}
}
}
}
}
long total = 0;
logln("### Elapsed time by patterns ###");
for (int i = 0; i < PATTERNS.length; i++) {
logln(times[i] + "ms (" + PATTERNS[i] + ")");
total += times[i];
}
logln("Total: " + total + "ms");
logln("Iteration: " + testCounts);
}
}