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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package libcore.util;
import java.io.File;
import java.io.FileOutputStream;
import java.io.RandomAccessFile;
import java.util.TimeZone;
public class ZoneInfoDBTest extends junit.framework.TestCase {
// The base tzdata file, always present on a device.
private static final String TZDATA_IN_ROOT =
System.getenv("ANDROID_ROOT") + "/usr/share/zoneinfo/tzdata";
// An empty override file should fall back to the default file.
public void testEmptyOverrideFile() throws Exception {
ZoneInfoDB.TzData data = new ZoneInfoDB.TzData(TZDATA_IN_ROOT);
ZoneInfoDB.TzData dataWithEmptyOverride =
new ZoneInfoDB.TzData(makeEmptyFile(), TZDATA_IN_ROOT);
assertEquals(data.getVersion(), dataWithEmptyOverride.getVersion());
assertEquals(data.getAvailableIDs().length, dataWithEmptyOverride.getAvailableIDs().length);
}
// A corrupt override file should fall back to the default file.
public void testCorruptOverrideFile() throws Exception {
ZoneInfoDB.TzData data = new ZoneInfoDB.TzData(TZDATA_IN_ROOT);
ZoneInfoDB.TzData dataWithCorruptOverride =
new ZoneInfoDB.TzData(makeCorruptFile(), TZDATA_IN_ROOT);
assertEquals(data.getVersion(), dataWithCorruptOverride.getVersion());
assertEquals(data.getAvailableIDs().length, dataWithCorruptOverride.getAvailableIDs().length);
}
// Given no tzdata files we can use, we should fall back to built-in "GMT".
public void testNoGoodFile() throws Exception {
ZoneInfoDB.TzData data = new ZoneInfoDB.TzData(makeEmptyFile());
assertEquals("missing", data.getVersion());
assertEquals(1, data.getAvailableIDs().length);
assertEquals("GMT", data.getAvailableIDs()[0]);
}
// Given a valid override file, we should find ourselves using that.
public void testGoodOverrideFile() throws Exception {
RandomAccessFile in = new RandomAccessFile(TZDATA_IN_ROOT, "r");
byte[] content = new byte[(int) in.length()];
in.readFully(content);
// Bump the version number to one long past where humans will be extinct.
content[6] = '9';
content[7] = '9';
content[8] = '9';
content[9] = '9';
content[10] = 'z';
in.close();
ZoneInfoDB.TzData data = new ZoneInfoDB.TzData(TZDATA_IN_ROOT);
String goodFile = makeTemporaryFile(content);
try {
ZoneInfoDB.TzData dataWithOverride = new ZoneInfoDB.TzData(goodFile, TZDATA_IN_ROOT);
assertEquals("9999z", dataWithOverride.getVersion());
assertEquals(data.getAvailableIDs().length, dataWithOverride.getAvailableIDs().length);
} finally {
new File(goodFile).delete();
}
}
// Confirms any caching that exists correctly handles TimeZone mutability.
public void testMakeTimeZone_timeZoneMutability() throws Exception {
ZoneInfoDB.TzData data = new ZoneInfoDB.TzData(TZDATA_IN_ROOT);
String tzId = "Europe/London";
ZoneInfo first = data.makeTimeZone(tzId);
ZoneInfo second = data.makeTimeZone(tzId);
assertNotSame(first, second);
assertTrue(first.hasSameRules(second));
first.setID("Not Europe/London");
assertFalse(first.getID().equals(second.getID()));
first.setRawOffset(3600);
assertFalse(first.getRawOffset() == second.getRawOffset());
}
public void testMakeTimeZone_notFound() throws Exception {
ZoneInfoDB.TzData data = new ZoneInfoDB.TzData(TZDATA_IN_ROOT);
assertNull(data.makeTimeZone("THIS_TZ_DOES_NOT_EXIST"));
assertFalse(data.hasTimeZone("THIS_TZ_DOES_NOT_EXIST"));
}
public void testMakeTimeZone_found() throws Exception {
ZoneInfoDB.TzData data = new ZoneInfoDB.TzData(TZDATA_IN_ROOT);
assertNotNull(data.makeTimeZone("Europe/London"));
assertTrue(data.hasTimeZone("Europe/London"));
}
private static String makeCorruptFile() throws Exception {
return makeTemporaryFile("invalid content".getBytes());
}
private static String makeEmptyFile() throws Exception {
return makeTemporaryFile(new byte[0]);
}
private static String makeTemporaryFile(byte[] content) throws Exception {
File f = File.createTempFile("temp-", ".txt");
FileOutputStream fos = new FileOutputStream(f);
fos.write(content);
fos.close();
return f.getPath();
}
}
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