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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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|
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import static java.util.concurrent.TimeUnit.DAYS; |
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import static java.util.concurrent.TimeUnit.HOURS; |
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import static java.util.concurrent.TimeUnit.MICROSECONDS; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.MINUTES; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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import static java.util.concurrent.TimeUnit.SECONDS; |
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|
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import java.time.temporal.ChronoUnit; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.TimeUnit; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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public class TimeUnitTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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main(suite(), args); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(TimeUnitTest.class); |
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} |
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|
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// (loops to 88888 check increments at all time divisions.) |
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|
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/** |
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* convert correctly converts sample values across the units |
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*/ |
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public void testConvert() { |
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for (long t = 0; t < 88888; ++t) { |
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assertEquals(t*60*60*24, |
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SECONDS.convert(t, DAYS)); |
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assertEquals(t*60*60, |
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SECONDS.convert(t, HOURS)); |
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assertEquals(t*60, |
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SECONDS.convert(t, MINUTES)); |
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assertEquals(t, |
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SECONDS.convert(t, SECONDS)); |
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assertEquals(t, |
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SECONDS.convert(1000L*t, MILLISECONDS)); |
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assertEquals(t, |
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SECONDS.convert(1000000L*t, MICROSECONDS)); |
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assertEquals(t, |
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SECONDS.convert(1000000000L*t, NANOSECONDS)); |
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|
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assertEquals(1000L*t*60*60*24, |
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MILLISECONDS.convert(t, DAYS)); |
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assertEquals(1000L*t*60*60, |
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MILLISECONDS.convert(t, HOURS)); |
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assertEquals(1000L*t*60, |
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MILLISECONDS.convert(t, MINUTES)); |
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assertEquals(1000L*t, |
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MILLISECONDS.convert(t, SECONDS)); |
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assertEquals(t, |
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MILLISECONDS.convert(t, MILLISECONDS)); |
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assertEquals(t, |
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MILLISECONDS.convert(1000L*t, MICROSECONDS)); |
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assertEquals(t, |
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MILLISECONDS.convert(1000000L*t, NANOSECONDS)); |
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|
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assertEquals(1000000L*t*60*60*24, |
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MICROSECONDS.convert(t, DAYS)); |
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assertEquals(1000000L*t*60*60, |
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MICROSECONDS.convert(t, HOURS)); |
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assertEquals(1000000L*t*60, |
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MICROSECONDS.convert(t, MINUTES)); |
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assertEquals(1000000L*t, |
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MICROSECONDS.convert(t, SECONDS)); |
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assertEquals(1000L*t, |
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MICROSECONDS.convert(t, MILLISECONDS)); |
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assertEquals(t, |
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MICROSECONDS.convert(t, MICROSECONDS)); |
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assertEquals(t, |
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MICROSECONDS.convert(1000L*t, NANOSECONDS)); |
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|
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assertEquals(1000000000L*t*60*60*24, |
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NANOSECONDS.convert(t, DAYS)); |
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assertEquals(1000000000L*t*60*60, |
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NANOSECONDS.convert(t, HOURS)); |
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assertEquals(1000000000L*t*60, |
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NANOSECONDS.convert(t, MINUTES)); |
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assertEquals(1000000000L*t, |
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NANOSECONDS.convert(t, SECONDS)); |
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assertEquals(1000000L*t, |
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NANOSECONDS.convert(t, MILLISECONDS)); |
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assertEquals(1000L*t, |
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NANOSECONDS.convert(t, MICROSECONDS)); |
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assertEquals(t, |
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NANOSECONDS.convert(t, NANOSECONDS)); |
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} |
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} |
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|
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/** |
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* toNanos correctly converts sample values in different units to |
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* nanoseconds |
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*/ |
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public void testToNanos() { |
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for (long t = 0; t < 88888; ++t) { |
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assertEquals(t*1000000000L*60*60*24, |
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DAYS.toNanos(t)); |
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assertEquals(t*1000000000L*60*60, |
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HOURS.toNanos(t)); |
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assertEquals(t*1000000000L*60, |
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MINUTES.toNanos(t)); |
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assertEquals(1000000000L*t, |
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SECONDS.toNanos(t)); |
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assertEquals(1000000L*t, |
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MILLISECONDS.toNanos(t)); |
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assertEquals(1000L*t, |
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MICROSECONDS.toNanos(t)); |
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assertEquals(t, |
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NANOSECONDS.toNanos(t)); |
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} |
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} |
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|
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/** |
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* toMicros correctly converts sample values in different units to |
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* microseconds |
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*/ |
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public void testToMicros() { |
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for (long t = 0; t < 88888; ++t) { |
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assertEquals(t*1000000L*60*60*24, |
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DAYS.toMicros(t)); |
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assertEquals(t*1000000L*60*60, |
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HOURS.toMicros(t)); |
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assertEquals(t*1000000L*60, |
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MINUTES.toMicros(t)); |
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assertEquals(1000000L*t, |
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SECONDS.toMicros(t)); |
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assertEquals(1000L*t, |
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MILLISECONDS.toMicros(t)); |
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assertEquals(t, |
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MICROSECONDS.toMicros(t)); |
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assertEquals(t, |
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NANOSECONDS.toMicros(t*1000L)); |
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} |
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} |
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|
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/** |
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* toMillis correctly converts sample values in different units to |
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* milliseconds |
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*/ |
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public void testToMillis() { |
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for (long t = 0; t < 88888; ++t) { |
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assertEquals(t*1000L*60*60*24, |
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DAYS.toMillis(t)); |
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assertEquals(t*1000L*60*60, |
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HOURS.toMillis(t)); |
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assertEquals(t*1000L*60, |
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MINUTES.toMillis(t)); |
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assertEquals(1000L*t, |
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SECONDS.toMillis(t)); |
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assertEquals(t, |
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MILLISECONDS.toMillis(t)); |
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assertEquals(t, |
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MICROSECONDS.toMillis(t*1000L)); |
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assertEquals(t, |
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NANOSECONDS.toMillis(t*1000000L)); |
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} |
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} |
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|
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/** |
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* toSeconds correctly converts sample values in different units to |
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* seconds |
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*/ |
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public void testToSeconds() { |
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for (long t = 0; t < 88888; ++t) { |
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assertEquals(t*60*60*24, |
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DAYS.toSeconds(t)); |
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assertEquals(t*60*60, |
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HOURS.toSeconds(t)); |
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assertEquals(t*60, |
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MINUTES.toSeconds(t)); |
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assertEquals(t, |
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SECONDS.toSeconds(t)); |
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assertEquals(t, |
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MILLISECONDS.toSeconds(t*1000L)); |
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assertEquals(t, |
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MICROSECONDS.toSeconds(t*1000000L)); |
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assertEquals(t, |
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NANOSECONDS.toSeconds(t*1000000000L)); |
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} |
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} |
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|
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/** |
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* toMinutes correctly converts sample values in different units to |
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* minutes |
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*/ |
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public void testToMinutes() { |
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for (long t = 0; t < 88888; ++t) { |
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assertEquals(t*60*24, |
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DAYS.toMinutes(t)); |
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assertEquals(t*60, |
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HOURS.toMinutes(t)); |
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assertEquals(t, |
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MINUTES.toMinutes(t)); |
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assertEquals(t, |
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SECONDS.toMinutes(t*60)); |
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assertEquals(t, |
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MILLISECONDS.toMinutes(t*1000L*60)); |
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assertEquals(t, |
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MICROSECONDS.toMinutes(t*1000000L*60)); |
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assertEquals(t, |
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NANOSECONDS.toMinutes(t*1000000000L*60)); |
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} |
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} |
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|
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/** |
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* toHours correctly converts sample values in different units to |
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* hours |
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*/ |
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public void testToHours() { |
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for (long t = 0; t < 88888; ++t) { |
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assertEquals(t*24, |
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DAYS.toHours(t)); |
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assertEquals(t, |
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HOURS.toHours(t)); |
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assertEquals(t, |
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MINUTES.toHours(t*60)); |
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assertEquals(t, |
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SECONDS.toHours(t*60*60)); |
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assertEquals(t, |
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MILLISECONDS.toHours(t*1000L*60*60)); |
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assertEquals(t, |
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MICROSECONDS.toHours(t*1000000L*60*60)); |
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assertEquals(t, |
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NANOSECONDS.toHours(t*1000000000L*60*60)); |
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} |
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} |
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|
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/** |
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* toDays correctly converts sample values in different units to |
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* days |
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*/ |
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public void testToDays() { |
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for (long t = 0; t < 88888; ++t) { |
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assertEquals(t, |
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DAYS.toDays(t)); |
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assertEquals(t, |
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HOURS.toDays(t*24)); |
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assertEquals(t, |
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MINUTES.toDays(t*60*24)); |
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assertEquals(t, |
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SECONDS.toDays(t*60*60*24)); |
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assertEquals(t, |
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MILLISECONDS.toDays(t*1000L*60*60*24)); |
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assertEquals(t, |
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MICROSECONDS.toDays(t*1000000L*60*60*24)); |
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assertEquals(t, |
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NANOSECONDS.toDays(t*1000000000L*60*60*24)); |
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} |
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} |
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|
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/** |
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* convert saturates positive too-large values to Long.MAX_VALUE |
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* and negative to LONG.MIN_VALUE |
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*/ |
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public void testConvertSaturate() { |
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assertEquals(Long.MAX_VALUE, |
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NANOSECONDS.convert(Long.MAX_VALUE / 2, SECONDS)); |
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assertEquals(Long.MIN_VALUE, |
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NANOSECONDS.convert(-Long.MAX_VALUE / 4, SECONDS)); |
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assertEquals(Long.MAX_VALUE, |
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NANOSECONDS.convert(Long.MAX_VALUE / 2, MINUTES)); |
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assertEquals(Long.MIN_VALUE, |
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NANOSECONDS.convert(-Long.MAX_VALUE / 4, MINUTES)); |
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assertEquals(Long.MAX_VALUE, |
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NANOSECONDS.convert(Long.MAX_VALUE / 2, HOURS)); |
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assertEquals(Long.MIN_VALUE, |
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NANOSECONDS.convert(-Long.MAX_VALUE / 4, HOURS)); |
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assertEquals(Long.MAX_VALUE, |
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NANOSECONDS.convert(Long.MAX_VALUE / 2, DAYS)); |
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assertEquals(Long.MIN_VALUE, |
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NANOSECONDS.convert(-Long.MAX_VALUE / 4, DAYS)); |
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} |
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|
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/** |
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* toNanos saturates positive too-large values to Long.MAX_VALUE |
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* and negative to LONG.MIN_VALUE |
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*/ |
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public void testToNanosSaturate() { |
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assertEquals(Long.MAX_VALUE, |
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MILLISECONDS.toNanos(Long.MAX_VALUE / 2)); |
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assertEquals(Long.MIN_VALUE, |
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MILLISECONDS.toNanos(-Long.MAX_VALUE / 3)); |
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} |
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|
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/** |
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* toString returns name of unit |
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*/ |
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public void testToString() { |
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assertEquals("SECONDS", SECONDS.toString()); |
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} |
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|
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/** |
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* name returns name of unit |
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*/ |
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public void testName() { |
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assertEquals("SECONDS", SECONDS.name()); |
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} |
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|
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/** |
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* Timed wait without holding lock throws |
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* IllegalMonitorStateException |
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*/ |
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public void testTimedWait_IllegalMonitorException() { |
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Thread t = newStartedThread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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Object o = new Object(); |
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TimeUnit tu = MILLISECONDS; |
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|
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try { |
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tu.timedWait(o, LONG_DELAY_MS); |
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threadShouldThrow(); |
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} catch (IllegalMonitorStateException success) {} |
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}}); |
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|
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awaitTermination(t); |
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} |
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|
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/** |
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* timedWait throws InterruptedException when interrupted |
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*/ |
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public void testTimedWait_Interruptible() { |
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final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
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Thread t = newStartedThread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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Object o = new Object(); |
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TimeUnit tu = MILLISECONDS; |
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|
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Thread.currentThread().interrupt(); |
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try { |
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synchronized (o) { |
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tu.timedWait(o, LONG_DELAY_MS); |
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} |
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shouldThrow(); |
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} catch (InterruptedException success) {} |
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assertFalse(Thread.interrupted()); |
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|
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pleaseInterrupt.countDown(); |
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try { |
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synchronized (o) { |
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tu.timedWait(o, LONG_DELAY_MS); |
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} |
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shouldThrow(); |
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} catch (InterruptedException success) {} |
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assertFalse(Thread.interrupted()); |
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}}); |
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|
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await(pleaseInterrupt); |
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assertThreadStaysAlive(t); |
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t.interrupt(); |
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awaitTermination(t); |
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} |
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|
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/** |
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* timedJoin throws InterruptedException when interrupted |
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*/ |
| 368 |
public void testTimedJoin_Interruptible() { |
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final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
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final Thread s = newStartedThread(new CheckedInterruptedRunnable() { |
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public void realRun() throws InterruptedException { |
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Thread.sleep(LONG_DELAY_MS); |
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}}); |
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final Thread t = newStartedThread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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TimeUnit tu = MILLISECONDS; |
| 377 |
Thread.currentThread().interrupt(); |
| 378 |
try { |
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tu.timedJoin(s, LONG_DELAY_MS); |
| 380 |
shouldThrow(); |
| 381 |
} catch (InterruptedException success) {} |
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assertFalse(Thread.interrupted()); |
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|
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pleaseInterrupt.countDown(); |
| 385 |
try { |
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tu.timedJoin(s, LONG_DELAY_MS); |
| 387 |
shouldThrow(); |
| 388 |
} catch (InterruptedException success) {} |
| 389 |
assertFalse(Thread.interrupted()); |
| 390 |
}}); |
| 391 |
|
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await(pleaseInterrupt); |
| 393 |
assertThreadStaysAlive(t); |
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t.interrupt(); |
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awaitTermination(t); |
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s.interrupt(); |
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awaitTermination(s); |
| 398 |
} |
| 399 |
|
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/** |
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* timedSleep throws InterruptedException when interrupted |
| 402 |
*/ |
| 403 |
public void testTimedSleep_Interruptible() { |
| 404 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
| 405 |
Thread t = newStartedThread(new CheckedRunnable() { |
| 406 |
public void realRun() throws InterruptedException { |
| 407 |
TimeUnit tu = MILLISECONDS; |
| 408 |
Thread.currentThread().interrupt(); |
| 409 |
try { |
| 410 |
tu.sleep(LONG_DELAY_MS); |
| 411 |
shouldThrow(); |
| 412 |
} catch (InterruptedException success) {} |
| 413 |
assertFalse(Thread.interrupted()); |
| 414 |
|
| 415 |
pleaseInterrupt.countDown(); |
| 416 |
try { |
| 417 |
tu.sleep(LONG_DELAY_MS); |
| 418 |
shouldThrow(); |
| 419 |
} catch (InterruptedException success) {} |
| 420 |
assertFalse(Thread.interrupted()); |
| 421 |
}}); |
| 422 |
|
| 423 |
await(pleaseInterrupt); |
| 424 |
assertThreadStaysAlive(t); |
| 425 |
t.interrupt(); |
| 426 |
awaitTermination(t); |
| 427 |
} |
| 428 |
|
| 429 |
/** |
| 430 |
* a deserialized serialized unit is the same instance |
| 431 |
*/ |
| 432 |
public void testSerialization() throws Exception { |
| 433 |
for (TimeUnit x : TimeUnit.values()) |
| 434 |
assertSame(x, serialClone(x)); |
| 435 |
} |
| 436 |
|
| 437 |
/** |
| 438 |
* tests for toChronoUnit. |
| 439 |
*/ |
| 440 |
public void testToChronoUnit() throws Exception { |
| 441 |
assertSame(ChronoUnit.NANOS, NANOSECONDS.toChronoUnit()); |
| 442 |
assertSame(ChronoUnit.MICROS, MICROSECONDS.toChronoUnit()); |
| 443 |
assertSame(ChronoUnit.MILLIS, MILLISECONDS.toChronoUnit()); |
| 444 |
assertSame(ChronoUnit.SECONDS, SECONDS.toChronoUnit()); |
| 445 |
assertSame(ChronoUnit.MINUTES, MINUTES.toChronoUnit()); |
| 446 |
assertSame(ChronoUnit.HOURS, HOURS.toChronoUnit()); |
| 447 |
assertSame(ChronoUnit.DAYS, DAYS.toChronoUnit()); |
| 448 |
|
| 449 |
// Every TimeUnit has a defined ChronoUnit equivalent |
| 450 |
for (TimeUnit x : TimeUnit.values()) |
| 451 |
assertSame(x, TimeUnit.of(x.toChronoUnit())); |
| 452 |
} |
| 453 |
|
| 454 |
/** |
| 455 |
* tests for TimeUnit.of(ChronoUnit). |
| 456 |
*/ |
| 457 |
public void testTimeUnitOf() throws Exception { |
| 458 |
assertSame(NANOSECONDS, TimeUnit.of(ChronoUnit.NANOS)); |
| 459 |
assertSame(MICROSECONDS, TimeUnit.of(ChronoUnit.MICROS)); |
| 460 |
assertSame(MILLISECONDS, TimeUnit.of(ChronoUnit.MILLIS)); |
| 461 |
assertSame(SECONDS, TimeUnit.of(ChronoUnit.SECONDS)); |
| 462 |
assertSame(MINUTES, TimeUnit.of(ChronoUnit.MINUTES)); |
| 463 |
assertSame(HOURS, TimeUnit.of(ChronoUnit.HOURS)); |
| 464 |
assertSame(DAYS, TimeUnit.of(ChronoUnit.DAYS)); |
| 465 |
|
| 466 |
assertThrows(NullPointerException.class, |
| 467 |
() -> TimeUnit.of((ChronoUnit)null)); |
| 468 |
|
| 469 |
// ChronoUnits either round trip to their TimeUnit |
| 470 |
// equivalents, or throw IllegalArgumentException. |
| 471 |
for (ChronoUnit cu : ChronoUnit.values()) { |
| 472 |
final TimeUnit tu; |
| 473 |
try { |
| 474 |
tu = TimeUnit.of(cu); |
| 475 |
} catch (IllegalArgumentException acceptable) { |
| 476 |
continue; |
| 477 |
} |
| 478 |
assertSame(cu, tu.toChronoUnit()); |
| 479 |
} |
| 480 |
} |
| 481 |
|
| 482 |
} |
