/*
* 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.
*/
/*
* This file is available under and governed by the GNU General Public
* License version 2 only, as published by the Free Software Foundation.
* However, the following notice accompanied the original version of this
* file:
*
* Written by Doug Lea with assistance from members of JCP JSR-166
* Expert Group and released to the public domain, as explained at
* http://creativecommons.org/publicdomain/zero/1.0/
* Other contributors include Andrew Wright, Jeffrey Hayes,
* Pat Fisher, Mike Judd.
*/
import static java.util.concurrent.TimeUnit.DAYS;
import static java.util.concurrent.TimeUnit.HOURS;
import static java.util.concurrent.TimeUnit.MICROSECONDS;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.MINUTES;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
import static java.util.concurrent.TimeUnit.SECONDS;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import junit.framework.Test;
import junit.framework.TestSuite;
public class TimeUnitTest extends JSR166TestCase {
public static void main(String[] args) {
main(suite(), args);
}
public static Test suite() {
return new TestSuite(TimeUnitTest.class);
}
// (loops to 88888 check increments at all time divisions.)
/**
* convert correctly converts sample values across the units
*/
public void testConvert() {
for (long t = 0; t < 88888; ++t) {
assertEquals(t*60*60*24,
SECONDS.convert(t, DAYS));
assertEquals(t*60*60,
SECONDS.convert(t, HOURS));
assertEquals(t*60,
SECONDS.convert(t, MINUTES));
assertEquals(t,
SECONDS.convert(t, SECONDS));
assertEquals(t,
SECONDS.convert(1000L*t, MILLISECONDS));
assertEquals(t,
SECONDS.convert(1000000L*t, MICROSECONDS));
assertEquals(t,
SECONDS.convert(1000000000L*t, NANOSECONDS));
assertEquals(1000L*t*60*60*24,
MILLISECONDS.convert(t, DAYS));
assertEquals(1000L*t*60*60,
MILLISECONDS.convert(t, HOURS));
assertEquals(1000L*t*60,
MILLISECONDS.convert(t, MINUTES));
assertEquals(1000L*t,
MILLISECONDS.convert(t, SECONDS));
assertEquals(t,
MILLISECONDS.convert(t, MILLISECONDS));
assertEquals(t,
MILLISECONDS.convert(1000L*t, MICROSECONDS));
assertEquals(t,
MILLISECONDS.convert(1000000L*t, NANOSECONDS));
assertEquals(1000000L*t*60*60*24,
MICROSECONDS.convert(t, DAYS));
assertEquals(1000000L*t*60*60,
MICROSECONDS.convert(t, HOURS));
assertEquals(1000000L*t*60,
MICROSECONDS.convert(t, MINUTES));
assertEquals(1000000L*t,
MICROSECONDS.convert(t, SECONDS));
assertEquals(1000L*t,
MICROSECONDS.convert(t, MILLISECONDS));
assertEquals(t,
MICROSECONDS.convert(t, MICROSECONDS));
assertEquals(t,
MICROSECONDS.convert(1000L*t, NANOSECONDS));
assertEquals(1000000000L*t*60*60*24,
NANOSECONDS.convert(t, DAYS));
assertEquals(1000000000L*t*60*60,
NANOSECONDS.convert(t, HOURS));
assertEquals(1000000000L*t*60,
NANOSECONDS.convert(t, MINUTES));
assertEquals(1000000000L*t,
NANOSECONDS.convert(t, SECONDS));
assertEquals(1000000L*t,
NANOSECONDS.convert(t, MILLISECONDS));
assertEquals(1000L*t,
NANOSECONDS.convert(t, MICROSECONDS));
assertEquals(t,
NANOSECONDS.convert(t, NANOSECONDS));
}
for (TimeUnit x : TimeUnit.values()) {
long[] zs = {
0, 1, -1,
Integer.MAX_VALUE, Integer.MIN_VALUE,
Long.MAX_VALUE, Long.MIN_VALUE,
};
for (long z : zs) assertEquals(z, x.convert(z, x));
}
}
/**
* toNanos correctly converts sample values in different units to
* nanoseconds
*/
public void testToNanos() {
for (long t = 0; t < 88888; ++t) {
assertEquals(t*1000000000L*60*60*24,
DAYS.toNanos(t));
assertEquals(t*1000000000L*60*60,
HOURS.toNanos(t));
assertEquals(t*1000000000L*60,
MINUTES.toNanos(t));
assertEquals(1000000000L*t,
SECONDS.toNanos(t));
assertEquals(1000000L*t,
MILLISECONDS.toNanos(t));
assertEquals(1000L*t,
MICROSECONDS.toNanos(t));
assertEquals(t,
NANOSECONDS.toNanos(t));
}
}
/**
* toMicros correctly converts sample values in different units to
* microseconds
*/
public void testToMicros() {
for (long t = 0; t < 88888; ++t) {
assertEquals(t*1000000L*60*60*24,
DAYS.toMicros(t));
assertEquals(t*1000000L*60*60,
HOURS.toMicros(t));
assertEquals(t*1000000L*60,
MINUTES.toMicros(t));
assertEquals(1000000L*t,
SECONDS.toMicros(t));
assertEquals(1000L*t,
MILLISECONDS.toMicros(t));
assertEquals(t,
MICROSECONDS.toMicros(t));
assertEquals(t,
NANOSECONDS.toMicros(t*1000L));
}
}
/**
* toMillis correctly converts sample values in different units to
* milliseconds
*/
public void testToMillis() {
for (long t = 0; t < 88888; ++t) {
assertEquals(t*1000L*60*60*24,
DAYS.toMillis(t));
assertEquals(t*1000L*60*60,
HOURS.toMillis(t));
assertEquals(t*1000L*60,
MINUTES.toMillis(t));
assertEquals(1000L*t,
SECONDS.toMillis(t));
assertEquals(t,
MILLISECONDS.toMillis(t));
assertEquals(t,
MICROSECONDS.toMillis(t*1000L));
assertEquals(t,
NANOSECONDS.toMillis(t*1000000L));
}
}
/**
* toSeconds correctly converts sample values in different units to
* seconds
*/
public void testToSeconds() {
for (long t = 0; t < 88888; ++t) {
assertEquals(t*60*60*24,
DAYS.toSeconds(t));
assertEquals(t*60*60,
HOURS.toSeconds(t));
assertEquals(t*60,
MINUTES.toSeconds(t));
assertEquals(t,
SECONDS.toSeconds(t));
assertEquals(t,
MILLISECONDS.toSeconds(t*1000L));
assertEquals(t,
MICROSECONDS.toSeconds(t*1000000L));
assertEquals(t,
NANOSECONDS.toSeconds(t*1000000000L));
}
}
/**
* toMinutes correctly converts sample values in different units to
* minutes
*/
public void testToMinutes() {
for (long t = 0; t < 88888; ++t) {
assertEquals(t*60*24,
DAYS.toMinutes(t));
assertEquals(t*60,
HOURS.toMinutes(t));
assertEquals(t,
MINUTES.toMinutes(t));
assertEquals(t,
SECONDS.toMinutes(t*60));
assertEquals(t,
MILLISECONDS.toMinutes(t*1000L*60));
assertEquals(t,
MICROSECONDS.toMinutes(t*1000000L*60));
assertEquals(t,
NANOSECONDS.toMinutes(t*1000000000L*60));
}
}
/**
* toHours correctly converts sample values in different units to
* hours
*/
public void testToHours() {
for (long t = 0; t < 88888; ++t) {
assertEquals(t*24,
DAYS.toHours(t));
assertEquals(t,
HOURS.toHours(t));
assertEquals(t,
MINUTES.toHours(t*60));
assertEquals(t,
SECONDS.toHours(t*60*60));
assertEquals(t,
MILLISECONDS.toHours(t*1000L*60*60));
assertEquals(t,
MICROSECONDS.toHours(t*1000000L*60*60));
assertEquals(t,
NANOSECONDS.toHours(t*1000000000L*60*60));
}
}
/**
* toDays correctly converts sample values in different units to
* days
*/
public void testToDays() {
for (long t = 0; t < 88888; ++t) {
assertEquals(t,
DAYS.toDays(t));
assertEquals(t,
HOURS.toDays(t*24));
assertEquals(t,
MINUTES.toDays(t*60*24));
assertEquals(t,
SECONDS.toDays(t*60*60*24));
assertEquals(t,
MILLISECONDS.toDays(t*1000L*60*60*24));
assertEquals(t,
MICROSECONDS.toDays(t*1000000L*60*60*24));
assertEquals(t,
NANOSECONDS.toDays(t*1000000000L*60*60*24));
}
}
/**
* convert saturates positive too-large values to Long.MAX_VALUE
* and negative to LONG.MIN_VALUE
*/
public void testConvertSaturate() {
assertEquals(Long.MAX_VALUE,
NANOSECONDS.convert(Long.MAX_VALUE / 2, SECONDS));
assertEquals(Long.MIN_VALUE,
NANOSECONDS.convert(-Long.MAX_VALUE / 4, SECONDS));
assertEquals(Long.MAX_VALUE,
NANOSECONDS.convert(Long.MAX_VALUE / 2, MINUTES));
assertEquals(Long.MIN_VALUE,
NANOSECONDS.convert(-Long.MAX_VALUE / 4, MINUTES));
assertEquals(Long.MAX_VALUE,
NANOSECONDS.convert(Long.MAX_VALUE / 2, HOURS));
assertEquals(Long.MIN_VALUE,
NANOSECONDS.convert(-Long.MAX_VALUE / 4, HOURS));
assertEquals(Long.MAX_VALUE,
NANOSECONDS.convert(Long.MAX_VALUE / 2, DAYS));
assertEquals(Long.MIN_VALUE,
NANOSECONDS.convert(-Long.MAX_VALUE / 4, DAYS));
for (TimeUnit x : TimeUnit.values())
for (TimeUnit y : TimeUnit.values()) {
long ratio = x.toNanos(1) / y.toNanos(1);
if (ratio >= 1) {
assertEquals(ratio, y.convert(1, x));
assertEquals(1, x.convert(ratio, y));
long max = Long.MAX_VALUE/ratio;
assertEquals(max * ratio, y.convert(max, x));
assertEquals(-max * ratio, y.convert(-max, x));
assertEquals(max, x.convert(max * ratio, y));
assertEquals(-max, x.convert(-max * ratio, y));
if (max < Long.MAX_VALUE) {
assertEquals(Long.MAX_VALUE, y.convert(max + 1, x));
assertEquals(Long.MIN_VALUE, y.convert(-max - 1, x));
assertEquals(Long.MIN_VALUE, y.convert(Long.MIN_VALUE + 1, x));
}
assertEquals(Long.MAX_VALUE, y.convert(Long.MAX_VALUE, x));
assertEquals(Long.MIN_VALUE, y.convert(Long.MIN_VALUE, x));
}
}
}
/**
* toNanos saturates positive too-large values to Long.MAX_VALUE
* and negative to LONG.MIN_VALUE
*/
public void testToNanosSaturate() {
assertEquals(Long.MAX_VALUE,
MILLISECONDS.toNanos(Long.MAX_VALUE / 2));
assertEquals(Long.MIN_VALUE,
MILLISECONDS.toNanos(-Long.MAX_VALUE / 3));
for (TimeUnit x : TimeUnit.values()) {
long ratio = x.toNanos(1) / NANOSECONDS.toNanos(1);
if (ratio >= 1) {
long max = Long.MAX_VALUE/ratio;
for (long z : new long[] {0, 1, -1, max, -max})
assertEquals(z * ratio, x.toNanos(z));
if (max < Long.MAX_VALUE) {
assertEquals(Long.MAX_VALUE, x.toNanos(max + 1));
assertEquals(Long.MIN_VALUE, x.toNanos(-max - 1));
assertEquals(Long.MIN_VALUE, x.toNanos(Long.MIN_VALUE + 1));
}
assertEquals(Long.MAX_VALUE, x.toNanos(Long.MAX_VALUE));
assertEquals(Long.MIN_VALUE, x.toNanos(Long.MIN_VALUE));
if (max < Integer.MAX_VALUE) {
assertEquals(Long.MAX_VALUE, x.toNanos(Integer.MAX_VALUE));
assertEquals(Long.MIN_VALUE, x.toNanos(Integer.MIN_VALUE));
}
}
}
}
/**
* toMicros saturates positive too-large values to Long.MAX_VALUE
* and negative to LONG.MIN_VALUE
*/
public void testToMicrosSaturate() {
for (TimeUnit x : TimeUnit.values()) {
long ratio = x.toNanos(1) / MICROSECONDS.toNanos(1);
if (ratio >= 1) {
long max = Long.MAX_VALUE/ratio;
for (long z : new long[] {0, 1, -1, max, -max})
assertEquals(z * ratio, x.toMicros(z));
if (max < Long.MAX_VALUE) {
assertEquals(Long.MAX_VALUE, x.toMicros(max + 1));
assertEquals(Long.MIN_VALUE, x.toMicros(-max - 1));
assertEquals(Long.MIN_VALUE, x.toMicros(Long.MIN_VALUE + 1));
}
assertEquals(Long.MAX_VALUE, x.toMicros(Long.MAX_VALUE));
assertEquals(Long.MIN_VALUE, x.toMicros(Long.MIN_VALUE));
if (max < Integer.MAX_VALUE) {
assertEquals(Long.MAX_VALUE, x.toMicros(Integer.MAX_VALUE));
assertEquals(Long.MIN_VALUE, x.toMicros(Integer.MIN_VALUE));
}
}
}
}
/**
* toMillis saturates positive too-large values to Long.MAX_VALUE
* and negative to LONG.MIN_VALUE
*/
public void testToMillisSaturate() {
for (TimeUnit x : TimeUnit.values()) {
long ratio = x.toNanos(1) / MILLISECONDS.toNanos(1);
if (ratio >= 1) {
long max = Long.MAX_VALUE/ratio;
for (long z : new long[] {0, 1, -1, max, -max})
assertEquals(z * ratio, x.toMillis(z));
if (max < Long.MAX_VALUE) {
assertEquals(Long.MAX_VALUE, x.toMillis(max + 1));
assertEquals(Long.MIN_VALUE, x.toMillis(-max - 1));
assertEquals(Long.MIN_VALUE, x.toMillis(Long.MIN_VALUE + 1));
}
assertEquals(Long.MAX_VALUE, x.toMillis(Long.MAX_VALUE));
assertEquals(Long.MIN_VALUE, x.toMillis(Long.MIN_VALUE));
if (max < Integer.MAX_VALUE) {
assertEquals(Long.MAX_VALUE, x.toMillis(Integer.MAX_VALUE));
assertEquals(Long.MIN_VALUE, x.toMillis(Integer.MIN_VALUE));
}
}
}
}
/**
* toSeconds saturates positive too-large values to Long.MAX_VALUE
* and negative to LONG.MIN_VALUE
*/
public void testToSecondsSaturate() {
for (TimeUnit x : TimeUnit.values()) {
long ratio = x.toNanos(1) / SECONDS.toNanos(1);
if (ratio >= 1) {
long max = Long.MAX_VALUE/ratio;
for (long z : new long[] {0, 1, -1, max, -max})
assertEquals(z * ratio, x.toSeconds(z));
if (max < Long.MAX_VALUE) {
assertEquals(Long.MAX_VALUE, x.toSeconds(max + 1));
assertEquals(Long.MIN_VALUE, x.toSeconds(-max - 1));
assertEquals(Long.MIN_VALUE, x.toSeconds(Long.MIN_VALUE + 1));
}
assertEquals(Long.MAX_VALUE, x.toSeconds(Long.MAX_VALUE));
assertEquals(Long.MIN_VALUE, x.toSeconds(Long.MIN_VALUE));
if (max < Integer.MAX_VALUE) {
assertEquals(Long.MAX_VALUE, x.toSeconds(Integer.MAX_VALUE));
assertEquals(Long.MIN_VALUE, x.toSeconds(Integer.MIN_VALUE));
}
}
}
}
/**
* toMinutes saturates positive too-large values to Long.MAX_VALUE
* and negative to LONG.MIN_VALUE
*/
public void testToMinutesSaturate() {
for (TimeUnit x : TimeUnit.values()) {
long ratio = x.toNanos(1) / MINUTES.toNanos(1);
if (ratio > 1) {
long max = Long.MAX_VALUE/ratio;
for (long z : new long[] {0, 1, -1, max, -max})
assertEquals(z * ratio, x.toMinutes(z));
assertEquals(Long.MAX_VALUE, x.toMinutes(max + 1));
assertEquals(Long.MIN_VALUE, x.toMinutes(-max - 1));
assertEquals(Long.MAX_VALUE, x.toMinutes(Long.MAX_VALUE));
assertEquals(Long.MIN_VALUE, x.toMinutes(Long.MIN_VALUE));
assertEquals(Long.MIN_VALUE, x.toMinutes(Long.MIN_VALUE + 1));
}
}
}
/**
* toHours saturates positive too-large values to Long.MAX_VALUE
* and negative to LONG.MIN_VALUE
*/
public void testToHoursSaturate() {
for (TimeUnit x : TimeUnit.values()) {
long ratio = x.toNanos(1) / HOURS.toNanos(1);
if (ratio >= 1) {
long max = Long.MAX_VALUE/ratio;
for (long z : new long[] {0, 1, -1, max, -max})
assertEquals(z * ratio, x.toHours(z));
if (max < Long.MAX_VALUE) {
assertEquals(Long.MAX_VALUE, x.toHours(max + 1));
assertEquals(Long.MIN_VALUE, x.toHours(-max - 1));
assertEquals(Long.MIN_VALUE, x.toHours(Long.MIN_VALUE + 1));
}
assertEquals(Long.MAX_VALUE, x.toHours(Long.MAX_VALUE));
assertEquals(Long.MIN_VALUE, x.toHours(Long.MIN_VALUE));
}
}
}
/**
* toString returns name of unit
*/
public void testToString() {
assertEquals("SECONDS", SECONDS.toString());
}
/**
* name returns name of unit
*/
public void testName() {
assertEquals("SECONDS", SECONDS.name());
}
/**
* Timed wait without holding lock throws
* IllegalMonitorStateException
*/
public void testTimedWait_IllegalMonitorException() {
Thread t = newStartedThread(new CheckedRunnable() {
public void realRun() throws InterruptedException {
Object o = new Object();
TimeUnit tu = MILLISECONDS;
try {
tu.timedWait(o, LONG_DELAY_MS);
threadShouldThrow();
} catch (IllegalMonitorStateException success) {}
}});
awaitTermination(t);
}
/**
* timedWait throws InterruptedException when interrupted
*/
public void testTimedWait_Interruptible() {
final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
Thread t = newStartedThread(new CheckedRunnable() {
public void realRun() throws InterruptedException {
Object o = new Object();
TimeUnit tu = MILLISECONDS;
Thread.currentThread().interrupt();
try {
synchronized (o) {
tu.timedWait(o, LONG_DELAY_MS);
}
shouldThrow();
} catch (InterruptedException success) {}
assertFalse(Thread.interrupted());
pleaseInterrupt.countDown();
try {
synchronized (o) {
tu.timedWait(o, LONG_DELAY_MS);
}
shouldThrow();
} catch (InterruptedException success) {}
assertFalse(Thread.interrupted());
}});
await(pleaseInterrupt);
assertThreadStaysAlive(t);
t.interrupt();
awaitTermination(t);
}
/**
* timedJoin throws InterruptedException when interrupted
*/
public void testTimedJoin_Interruptible() {
final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
final Thread s = newStartedThread(new CheckedInterruptedRunnable() {
public void realRun() throws InterruptedException {
Thread.sleep(LONG_DELAY_MS);
}});
final Thread t = newStartedThread(new CheckedRunnable() {
public void realRun() throws InterruptedException {
TimeUnit tu = MILLISECONDS;
Thread.currentThread().interrupt();
try {
tu.timedJoin(s, LONG_DELAY_MS);
shouldThrow();
} catch (InterruptedException success) {}
assertFalse(Thread.interrupted());
pleaseInterrupt.countDown();
try {
tu.timedJoin(s, LONG_DELAY_MS);
shouldThrow();
} catch (InterruptedException success) {}
assertFalse(Thread.interrupted());
}});
await(pleaseInterrupt);
assertThreadStaysAlive(t);
t.interrupt();
awaitTermination(t);
s.interrupt();
awaitTermination(s);
}
/**
* timedSleep throws InterruptedException when interrupted
*/
public void testTimedSleep_Interruptible() {
final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
Thread t = newStartedThread(new CheckedRunnable() {
public void realRun() throws InterruptedException {
TimeUnit tu = MILLISECONDS;
Thread.currentThread().interrupt();
try {
tu.sleep(LONG_DELAY_MS);
shouldThrow();
} catch (InterruptedException success) {}
assertFalse(Thread.interrupted());
pleaseInterrupt.countDown();
try {
tu.sleep(LONG_DELAY_MS);
shouldThrow();
} catch (InterruptedException success) {}
assertFalse(Thread.interrupted());
}});
await(pleaseInterrupt);
assertThreadStaysAlive(t);
t.interrupt();
awaitTermination(t);
}
/**
* a deserialized serialized unit is the same instance
*/
public void testSerialization() throws Exception {
for (TimeUnit x : TimeUnit.values())
assertSame(x, serialClone(x));
}
}