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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/licenses/publicdomain |
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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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|
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import junit.framework.*; |
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import java.util.concurrent.*; |
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import java.io.*; |
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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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junit.textui.TestRunner.run(suite()); |
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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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TimeUnit.SECONDS.convert(t, |
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TimeUnit.DAYS)); |
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assertEquals(t*60*60, |
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TimeUnit.SECONDS.convert(t, |
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TimeUnit.HOURS)); |
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assertEquals(t*60, |
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TimeUnit.SECONDS.convert(t, |
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TimeUnit.MINUTES)); |
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assertEquals(t, |
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TimeUnit.SECONDS.convert(t, |
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TimeUnit.SECONDS)); |
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assertEquals(t, |
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TimeUnit.SECONDS.convert(1000L*t, |
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TimeUnit.MILLISECONDS)); |
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assertEquals(t, |
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TimeUnit.SECONDS.convert(1000000L*t, |
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TimeUnit.MICROSECONDS)); |
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assertEquals(t, |
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TimeUnit.SECONDS.convert(1000000000L*t, |
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TimeUnit.NANOSECONDS)); |
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|
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|
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assertEquals(1000L*t*60*60*24, |
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TimeUnit.MILLISECONDS.convert(t, |
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TimeUnit.DAYS)); |
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assertEquals(1000L*t*60*60, |
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TimeUnit.MILLISECONDS.convert(t, |
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TimeUnit.HOURS)); |
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assertEquals(1000L*t*60, |
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TimeUnit.MILLISECONDS.convert(t, |
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TimeUnit.MINUTES)); |
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assertEquals(1000L*t, |
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TimeUnit.MILLISECONDS.convert(t, |
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TimeUnit.SECONDS)); |
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assertEquals(t, |
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TimeUnit.MILLISECONDS.convert(t, |
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TimeUnit.MILLISECONDS)); |
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assertEquals(t, |
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TimeUnit.MILLISECONDS.convert(1000L*t, |
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TimeUnit.MICROSECONDS)); |
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assertEquals(t, |
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TimeUnit.MILLISECONDS.convert(1000000L*t, |
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TimeUnit.NANOSECONDS)); |
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|
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assertEquals(1000000L*t*60*60*24, |
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TimeUnit.MICROSECONDS.convert(t, |
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TimeUnit.DAYS)); |
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assertEquals(1000000L*t*60*60, |
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TimeUnit.MICROSECONDS.convert(t, |
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TimeUnit.HOURS)); |
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assertEquals(1000000L*t*60, |
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TimeUnit.MICROSECONDS.convert(t, |
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TimeUnit.MINUTES)); |
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assertEquals(1000000L*t, |
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TimeUnit.MICROSECONDS.convert(t, |
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TimeUnit.SECONDS)); |
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assertEquals(1000L*t, |
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TimeUnit.MICROSECONDS.convert(t, |
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TimeUnit.MILLISECONDS)); |
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assertEquals(t, |
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TimeUnit.MICROSECONDS.convert(t, |
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TimeUnit.MICROSECONDS)); |
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assertEquals(t, |
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TimeUnit.MICROSECONDS.convert(1000L*t, |
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TimeUnit.NANOSECONDS)); |
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|
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assertEquals(1000000000L*t*60*60*24, |
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TimeUnit.NANOSECONDS.convert(t, |
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TimeUnit.DAYS)); |
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assertEquals(1000000000L*t*60*60, |
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TimeUnit.NANOSECONDS.convert(t, |
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TimeUnit.HOURS)); |
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assertEquals(1000000000L*t*60, |
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TimeUnit.NANOSECONDS.convert(t, |
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TimeUnit.MINUTES)); |
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assertEquals(1000000000L*t, |
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TimeUnit.NANOSECONDS.convert(t, |
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TimeUnit.SECONDS)); |
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assertEquals(1000000L*t, |
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TimeUnit.NANOSECONDS.convert(t, |
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TimeUnit.MILLISECONDS)); |
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assertEquals(1000L*t, |
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TimeUnit.NANOSECONDS.convert(t, |
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TimeUnit.MICROSECONDS)); |
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assertEquals(t, |
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TimeUnit.NANOSECONDS.convert(t, |
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TimeUnit.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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TimeUnit.DAYS.toNanos(t)); |
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assertEquals(t*1000000000L*60*60, |
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TimeUnit.HOURS.toNanos(t)); |
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assertEquals(t*1000000000L*60, |
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TimeUnit.MINUTES.toNanos(t)); |
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assertEquals(1000000000L*t, |
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TimeUnit.SECONDS.toNanos(t)); |
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assertEquals(1000000L*t, |
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TimeUnit.MILLISECONDS.toNanos(t)); |
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assertEquals(1000L*t, |
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TimeUnit.MICROSECONDS.toNanos(t)); |
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assertEquals(t, |
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TimeUnit.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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TimeUnit.DAYS.toMicros(t)); |
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assertEquals(t*1000000L*60*60, |
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TimeUnit.HOURS.toMicros(t)); |
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assertEquals(t*1000000L*60, |
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TimeUnit.MINUTES.toMicros(t)); |
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assertEquals(1000000L*t, |
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TimeUnit.SECONDS.toMicros(t)); |
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assertEquals(1000L*t, |
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TimeUnit.MILLISECONDS.toMicros(t)); |
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assertEquals(t, |
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TimeUnit.MICROSECONDS.toMicros(t)); |
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assertEquals(t, |
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TimeUnit.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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TimeUnit.DAYS.toMillis(t)); |
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assertEquals(t*1000L*60*60, |
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TimeUnit.HOURS.toMillis(t)); |
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assertEquals(t*1000L*60, |
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TimeUnit.MINUTES.toMillis(t)); |
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assertEquals(1000L*t, |
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TimeUnit.SECONDS.toMillis(t)); |
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assertEquals(t, |
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TimeUnit.MILLISECONDS.toMillis(t)); |
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assertEquals(t, |
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TimeUnit.MICROSECONDS.toMillis(t*1000L)); |
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assertEquals(t, |
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TimeUnit.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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TimeUnit.DAYS.toSeconds(t)); |
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assertEquals(t*60*60, |
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TimeUnit.HOURS.toSeconds(t)); |
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assertEquals(t*60, |
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TimeUnit.MINUTES.toSeconds(t)); |
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assertEquals(t, |
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TimeUnit.SECONDS.toSeconds(t)); |
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assertEquals(t, |
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TimeUnit.MILLISECONDS.toSeconds(t*1000L)); |
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assertEquals(t, |
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TimeUnit.MICROSECONDS.toSeconds(t*1000000L)); |
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assertEquals(t, |
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TimeUnit.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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TimeUnit.DAYS.toMinutes(t)); |
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assertEquals(t*60, |
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TimeUnit.HOURS.toMinutes(t)); |
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assertEquals(t, |
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TimeUnit.MINUTES.toMinutes(t)); |
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assertEquals(t, |
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TimeUnit.SECONDS.toMinutes(t*60)); |
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assertEquals(t, |
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TimeUnit.MILLISECONDS.toMinutes(t*1000L*60)); |
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assertEquals(t, |
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TimeUnit.MICROSECONDS.toMinutes(t*1000000L*60)); |
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assertEquals(t, |
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TimeUnit.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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TimeUnit.DAYS.toHours(t)); |
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assertEquals(t, |
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TimeUnit.HOURS.toHours(t)); |
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assertEquals(t, |
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TimeUnit.MINUTES.toHours(t*60)); |
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assertEquals(t, |
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TimeUnit.SECONDS.toHours(t*60*60)); |
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assertEquals(t, |
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TimeUnit.MILLISECONDS.toHours(t*1000L*60*60)); |
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assertEquals(t, |
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TimeUnit.MICROSECONDS.toHours(t*1000000L*60*60)); |
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assertEquals(t, |
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TimeUnit.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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TimeUnit.DAYS.toDays(t)); |
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assertEquals(t, |
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TimeUnit.HOURS.toDays(t*24)); |
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assertEquals(t, |
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TimeUnit.MINUTES.toDays(t*60*24)); |
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assertEquals(t, |
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TimeUnit.SECONDS.toDays(t*60*60*24)); |
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assertEquals(t, |
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TimeUnit.MILLISECONDS.toDays(t*1000L*60*60*24)); |
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assertEquals(t, |
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TimeUnit.MICROSECONDS.toDays(t*1000000L*60*60*24)); |
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assertEquals(t, |
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TimeUnit.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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/** |
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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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TimeUnit.NANOSECONDS.convert(Long.MAX_VALUE / 2, |
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TimeUnit.SECONDS)); |
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assertEquals(Long.MIN_VALUE, |
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TimeUnit.NANOSECONDS.convert(-Long.MAX_VALUE / 4, |
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TimeUnit.SECONDS)); |
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assertEquals(Long.MAX_VALUE, |
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TimeUnit.NANOSECONDS.convert(Long.MAX_VALUE / 2, |
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TimeUnit.MINUTES)); |
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assertEquals(Long.MIN_VALUE, |
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TimeUnit.NANOSECONDS.convert(-Long.MAX_VALUE / 4, |
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TimeUnit.MINUTES)); |
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assertEquals(Long.MAX_VALUE, |
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TimeUnit.NANOSECONDS.convert(Long.MAX_VALUE / 2, |
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TimeUnit.HOURS)); |
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assertEquals(Long.MIN_VALUE, |
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TimeUnit.NANOSECONDS.convert(-Long.MAX_VALUE / 4, |
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TimeUnit.HOURS)); |
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assertEquals(Long.MAX_VALUE, |
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TimeUnit.NANOSECONDS.convert(Long.MAX_VALUE / 2, |
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TimeUnit.DAYS)); |
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assertEquals(Long.MIN_VALUE, |
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TimeUnit.NANOSECONDS.convert(-Long.MAX_VALUE / 4, |
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TimeUnit.DAYS)); |
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|
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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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TimeUnit.MILLISECONDS.toNanos(Long.MAX_VALUE / 2)); |
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assertEquals(Long.MIN_VALUE, |
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TimeUnit.MILLISECONDS.toNanos(-Long.MAX_VALUE / 3)); |
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} |
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|
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|
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/** |
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* toString returns string containing common name of unit |
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*/ |
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public void testToString() { |
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String s = TimeUnit.SECONDS.toString(); |
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assertTrue(s.indexOf("ECOND") >= 0); |
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} |
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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() throws Exception { |
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Thread t = new Thread(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 = TimeUnit.MILLISECONDS; |
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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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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
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t.join(); |
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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() throws InterruptedException { |
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Thread t = new Thread(new CheckedInterruptedRunnable() { |
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public void realRun() throws InterruptedException { |
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Object o = new Object(); |
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|
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TimeUnit tu = TimeUnit.MILLISECONDS; |
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synchronized(o) { |
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tu.timedWait(o,MEDIUM_DELAY_MS); |
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} |
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}}); |
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
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t.join(); |
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} |
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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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*/ |
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public void testTimedJoin() throws InterruptedException { |
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final Thread s = new Thread(new CheckedInterruptedRunnable() { |
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public void realRun() throws InterruptedException { |
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Thread.sleep(MEDIUM_DELAY_MS); |
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}}); |
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final Thread t = new Thread(new CheckedInterruptedRunnable() { |
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public void realRun() throws InterruptedException { |
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TimeUnit tu = TimeUnit.MILLISECONDS; |
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tu.timedJoin(s, MEDIUM_DELAY_MS); |
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}});; |
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s.start(); |
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
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t.join(); |
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s.interrupt(); |
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s.join(); |
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} |
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|
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/** |
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* timedSleep throws InterruptedException when interrupted |
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*/ |
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public void testTimedSleep() throws InterruptedException { |
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Thread t = new Thread(new CheckedInterruptedRunnable() { |
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public void realRun() throws InterruptedException { |
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TimeUnit tu = TimeUnit.MILLISECONDS; |
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tu.sleep(MEDIUM_DELAY_MS); |
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}}); |
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|
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
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t.join(); |
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} |
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|
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/** |
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* a deserialized serialized unit is the same instance |
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*/ |
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public void testSerialization() throws Exception { |
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TimeUnit q = TimeUnit.MILLISECONDS; |
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|
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ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
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ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
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out.writeObject(q); |
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out.close(); |
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|
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ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
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ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
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TimeUnit r = (TimeUnit)in.readObject(); |
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assertSame(q, r); |
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} |
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|
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} |
