/*
* 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.
*/
package jsr166;
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 {
// android-note: Removed because the CTS runner does a bad job of
// retrying tests that have suite() declarations.
//
// public static void main(String[] args) {
// main(suite(), args);
// }
// public static Test suite() {
// return new TestSuite(...);
// }
// (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));
}
}
/**
* 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));
}
/**
* 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));
}
/**
* 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 {
TimeUnit x = MILLISECONDS;
assertSame(x, serialClone(x));
}
}