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jsr166 |
1.1 |
/* |
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* Written by Doug Lea and Martin Buchholz with assistance from |
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* members of JCP JSR-166 Expert Group and released to the public |
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* domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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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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import java.time.temporal.ChronoUnit; |
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import java.util.concurrent.TimeUnit; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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public class TimeUnit8Test 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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public static Test suite() { |
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return new TestSuite(TimeUnit8Test.class); |
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} |
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/** |
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* tests for toChronoUnit. |
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*/ |
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public void testToChronoUnit() throws Exception { |
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assertSame(ChronoUnit.NANOS, NANOSECONDS.toChronoUnit()); |
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assertSame(ChronoUnit.MICROS, MICROSECONDS.toChronoUnit()); |
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assertSame(ChronoUnit.MILLIS, MILLISECONDS.toChronoUnit()); |
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assertSame(ChronoUnit.SECONDS, SECONDS.toChronoUnit()); |
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assertSame(ChronoUnit.MINUTES, MINUTES.toChronoUnit()); |
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assertSame(ChronoUnit.HOURS, HOURS.toChronoUnit()); |
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assertSame(ChronoUnit.DAYS, DAYS.toChronoUnit()); |
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// Every TimeUnit has a defined ChronoUnit equivalent |
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for (TimeUnit x : TimeUnit.values()) |
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assertSame(x, TimeUnit.of(x.toChronoUnit())); |
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} |
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/** |
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* tests for TimeUnit.of(ChronoUnit). |
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*/ |
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public void testTimeUnitOf() throws Exception { |
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assertSame(NANOSECONDS, TimeUnit.of(ChronoUnit.NANOS)); |
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assertSame(MICROSECONDS, TimeUnit.of(ChronoUnit.MICROS)); |
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assertSame(MILLISECONDS, TimeUnit.of(ChronoUnit.MILLIS)); |
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assertSame(SECONDS, TimeUnit.of(ChronoUnit.SECONDS)); |
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assertSame(MINUTES, TimeUnit.of(ChronoUnit.MINUTES)); |
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assertSame(HOURS, TimeUnit.of(ChronoUnit.HOURS)); |
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assertSame(DAYS, TimeUnit.of(ChronoUnit.DAYS)); |
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assertThrows(NullPointerException.class, |
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() -> TimeUnit.of((ChronoUnit)null)); |
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// ChronoUnits either round trip to their TimeUnit |
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// equivalents, or throw IllegalArgumentException. |
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for (ChronoUnit cu : ChronoUnit.values()) { |
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final TimeUnit tu; |
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try { |
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tu = TimeUnit.of(cu); |
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} catch (IllegalArgumentException acceptable) { |
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continue; |
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} |
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assertSame(cu, tu.toChronoUnit()); |
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} |
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} |
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} |
