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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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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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import junit.framework.*; |
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import java.util.concurrent.*; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.CancellationException; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.FutureTask; |
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import java.util.concurrent.TimeoutException; |
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import java.util.concurrent.atomic.AtomicInteger; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.SECONDS; |
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import java.util.*; |
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|
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public class FutureTaskTest extends JSR166TestCase { |
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|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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junit.textui.TestRunner.run(suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(FutureTaskTest.class); |
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return new TestSuite(FutureTaskTest.class); |
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} |
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|
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void checkIsDone(Future<?> f) { |
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assertTrue(f.isDone()); |
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assertFalse(f.cancel(false)); |
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assertFalse(f.cancel(true)); |
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if (f instanceof PublicFutureTask) { |
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PublicFutureTask pf = (PublicFutureTask) f; |
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assertEquals(1, pf.doneCount()); |
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assertFalse(pf.runAndReset()); |
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assertEquals(1, pf.doneCount()); |
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|
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// Check that run and runAndReset have no effect. |
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int savedRunCount = pf.runCount(); |
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int savedSetCount = pf.setCount(); |
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int savedSetExceptionCount = pf.setExceptionCount(); |
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pf.run(); |
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pf.runAndReset(); |
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assertEquals(savedRunCount, pf.runCount()); |
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assertEquals(savedSetCount, pf.setCount()); |
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assertEquals(savedSetExceptionCount, pf.setExceptionCount()); |
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assertTrue(f.isDone()); |
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} |
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} |
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|
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void checkNotDone(Future<?> f) { |
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assertFalse(f.isDone()); |
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assertFalse(f.isCancelled()); |
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if (f instanceof PublicFutureTask) { |
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PublicFutureTask pf = (PublicFutureTask) f; |
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assertEquals(0, pf.doneCount()); |
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assertEquals(0, pf.setCount()); |
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assertEquals(0, pf.setExceptionCount()); |
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} |
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} |
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|
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void checkIsRunning(Future<?> f) { |
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checkNotDone(f); |
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if (f instanceof FutureTask) { |
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FutureTask ft = (FutureTask<?>) f; |
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// Check that run methods do nothing |
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ft.run(); |
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if (f instanceof PublicFutureTask) |
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assertFalse(((PublicFutureTask) f).runAndReset()); |
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checkNotDone(f); |
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} |
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} |
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|
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<T> void checkCompletedNormally(Future<T> f, T expected) { |
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checkIsDone(f); |
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assertFalse(f.isCancelled()); |
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|
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try { |
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assertSame(expected, f.get()); |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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try { |
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assertSame(expected, f.get(5L, SECONDS)); |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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} |
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|
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void checkCancelled(Future<?> f) { |
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checkIsDone(f); |
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assertTrue(f.isCancelled()); |
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|
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try { |
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f.get(); |
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shouldThrow(); |
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} catch (CancellationException success) { |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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|
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try { |
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f.get(5L, SECONDS); |
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shouldThrow(); |
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} catch (CancellationException success) { |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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} |
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|
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void tryToConfuseDoneTask(PublicFutureTask pf) { |
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pf.set(new Object()); |
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pf.setException(new Error()); |
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for (boolean mayInterruptIfRunning : new boolean[] { true, false }) { |
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pf.cancel(true); |
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} |
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} |
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|
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void checkCompletedAbnormally(Future<?> f, Throwable t) { |
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checkIsDone(f); |
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assertFalse(f.isCancelled()); |
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|
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try { |
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f.get(); |
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shouldThrow(); |
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} catch (ExecutionException success) { |
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assertSame(t, success.getCause()); |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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|
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try { |
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f.get(5L, SECONDS); |
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shouldThrow(); |
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} catch (ExecutionException success) { |
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assertSame(t, success.getCause()); |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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} |
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|
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/** |
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* Subclass to expose protected methods |
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*/ |
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static class MyFutureTask extends FutureTask { |
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public MyFutureTask(Callable r) { super(r); } |
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public boolean reset() { return super.reset(); } |
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public void setCancelled() { super.setCancelled(); } |
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public void setDone() { super.setDone(); } |
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public void set(Object x) { super.set(x); } |
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public void setException(Throwable t) { super.setException(t); } |
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static class PublicFutureTask extends FutureTask { |
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private final AtomicInteger runCount; |
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private final AtomicInteger doneCount = new AtomicInteger(0); |
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private final AtomicInteger runAndResetCount = new AtomicInteger(0); |
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private final AtomicInteger setCount = new AtomicInteger(0); |
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private final AtomicInteger setExceptionCount = new AtomicInteger(0); |
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public int runCount() { return runCount.get(); } |
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public int doneCount() { return doneCount.get(); } |
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public int runAndResetCount() { return runAndResetCount.get(); } |
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public int setCount() { return setCount.get(); } |
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public int setExceptionCount() { return setExceptionCount.get(); } |
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|
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PublicFutureTask(Runnable runnable) { |
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this(runnable, seven); |
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} |
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PublicFutureTask(Runnable runnable, Object result) { |
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this(runnable, result, new AtomicInteger(0)); |
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} |
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private PublicFutureTask(final Runnable runnable, Object result, |
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final AtomicInteger runCount) { |
156 |
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super(new Runnable() { |
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public void run() { |
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runCount.getAndIncrement(); |
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runnable.run(); |
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}}, result); |
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this.runCount = runCount; |
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} |
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PublicFutureTask(Callable callable) { |
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this(callable, new AtomicInteger(0)); |
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} |
166 |
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private PublicFutureTask(final Callable callable, |
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final AtomicInteger runCount) { |
168 |
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super(new Callable() { |
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public Object call() throws Exception { |
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runCount.getAndIncrement(); |
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return callable.call(); |
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}}); |
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this.runCount = runCount; |
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} |
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@Override public void done() { |
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assertTrue(isDone()); |
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doneCount.incrementAndGet(); |
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super.done(); |
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} |
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@Override public boolean runAndReset() { |
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runAndResetCount.incrementAndGet(); |
182 |
> |
return super.runAndReset(); |
183 |
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} |
184 |
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@Override public void set(Object x) { |
185 |
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setCount.incrementAndGet(); |
186 |
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super.set(x); |
187 |
> |
} |
188 |
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@Override public void setException(Throwable t) { |
189 |
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setExceptionCount.incrementAndGet(); |
190 |
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super.setException(t); |
191 |
> |
} |
192 |
> |
} |
193 |
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|
194 |
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class Counter extends CheckedRunnable { |
195 |
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final AtomicInteger count = new AtomicInteger(0); |
196 |
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public int get() { return count.get(); } |
197 |
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public void realRun() { |
198 |
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count.getAndIncrement(); |
199 |
> |
} |
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} |
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|
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/** |
203 |
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* Creating a future with a null callable throws NPE |
203 |
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* creating a future with a null callable throws NullPointerException |
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*/ |
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public void testConstructor() { |
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try { |
207 |
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FutureTask task = new FutureTask(null); |
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new FutureTask(null); |
208 |
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shouldThrow(); |
209 |
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} |
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catch(NullPointerException success) { |
42 |
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} |
209 |
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} catch (NullPointerException success) {} |
210 |
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} |
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|
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/** |
213 |
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* creating a future with null runnable fails |
213 |
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* creating a future with null runnable throws NullPointerException |
214 |
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*/ |
215 |
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public void testConstructor2() { |
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try { |
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FutureTask task = new FutureTask(null, Boolean.TRUE); |
217 |
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new FutureTask(null, Boolean.TRUE); |
218 |
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shouldThrow(); |
219 |
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} |
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catch(NullPointerException success) { |
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} |
219 |
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} catch (NullPointerException success) {} |
220 |
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} |
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|
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/** |
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* isDone is true when a task completes |
224 |
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*/ |
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public void testIsDone() { |
226 |
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FutureTask task = new FutureTask( new NoOpCallable()); |
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task.run(); |
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assertTrue(task.isDone()); |
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assertFalse(task.isCancelled()); |
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} |
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|
67 |
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/** |
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* reset of a done task succeeds and changes status to not done |
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*/ |
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public void testReset() { |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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task.run(); |
73 |
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assertTrue(task.isDone()); |
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assertTrue(task.reset()); |
226 |
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PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
227 |
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assertFalse(task.isDone()); |
228 |
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task.run(); |
229 |
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assertTrue(task.isDone()); |
230 |
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checkCompletedNormally(task, Boolean.TRUE); |
231 |
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assertEquals(1, task.runCount()); |
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} |
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|
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/** |
235 |
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* Resetting after cancellation fails |
80 |
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*/ |
81 |
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public void testResetAfterCancel() { |
82 |
< |
MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
83 |
< |
assertTrue(task.cancel(false)); |
84 |
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task.run(); |
85 |
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assertTrue(task.isDone()); |
86 |
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assertTrue(task.isCancelled()); |
87 |
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assertFalse(task.reset()); |
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} |
89 |
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|
90 |
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/** |
91 |
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* setDone of new task causes isDone to be true |
235 |
> |
* runAndReset of a non-cancelled task succeeds |
236 |
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*/ |
237 |
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public void testSetDone() { |
238 |
< |
MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
239 |
< |
task.setDone(); |
240 |
< |
assertTrue(task.isDone()); |
241 |
< |
assertFalse(task.isCancelled()); |
237 |
> |
public void testRunAndReset() { |
238 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
239 |
> |
for (int i = 0; i < 3; i++) { |
240 |
> |
assertTrue(task.runAndReset()); |
241 |
> |
checkNotDone(task); |
242 |
> |
assertEquals(i+1, task.runCount()); |
243 |
> |
assertEquals(i+1, task.runAndResetCount()); |
244 |
> |
assertEquals(0, task.setCount()); |
245 |
> |
assertEquals(0, task.setExceptionCount()); |
246 |
> |
} |
247 |
|
} |
248 |
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|
249 |
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/** |
250 |
< |
* setCancelled of a new task causes isCancelled to be true |
250 |
> |
* runAndReset after cancellation fails |
251 |
|
*/ |
252 |
< |
public void testSetCancelled() { |
253 |
< |
MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
254 |
< |
assertTrue(task.cancel(false)); |
255 |
< |
task.setCancelled(); |
256 |
< |
assertTrue(task.isDone()); |
257 |
< |
assertTrue(task.isCancelled()); |
252 |
> |
public void testRunAndResetAfterCancel() { |
253 |
> |
for (boolean mayInterruptIfRunning : new boolean[] { true, false }) { |
254 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
255 |
> |
assertTrue(task.cancel(mayInterruptIfRunning)); |
256 |
> |
for (int i = 0; i < 3; i++) { |
257 |
> |
assertFalse(task.runAndReset()); |
258 |
> |
assertEquals(0, task.runCount()); |
259 |
> |
assertEquals(i+1, task.runAndResetCount()); |
260 |
> |
assertEquals(0, task.setCount()); |
261 |
> |
assertEquals(0, task.setExceptionCount()); |
262 |
> |
} |
263 |
> |
tryToConfuseDoneTask(task); |
264 |
> |
checkCancelled(task); |
265 |
> |
} |
266 |
|
} |
267 |
|
|
268 |
|
/** |
269 |
< |
* setting value gauses get to return it |
269 |
> |
* setting value causes get to return it |
270 |
|
*/ |
271 |
< |
public void testSet() { |
272 |
< |
MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
271 |
> |
public void testSet() throws Exception { |
272 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
273 |
|
task.set(one); |
274 |
< |
try { |
275 |
< |
assertEquals(task.get(), one); |
276 |
< |
} |
277 |
< |
catch(Exception e) { |
278 |
< |
unexpectedException(); |
279 |
< |
} |
274 |
> |
for (int i = 0; i < 3; i++) { |
275 |
> |
assertSame(one, task.get()); |
276 |
> |
assertSame(one, task.get(LONG_DELAY_MS, MILLISECONDS)); |
277 |
> |
assertEquals(1, task.setCount()); |
278 |
> |
} |
279 |
> |
tryToConfuseDoneTask(task); |
280 |
> |
checkCompletedNormally(task, one); |
281 |
> |
assertEquals(0, task.runCount()); |
282 |
|
} |
283 |
|
|
284 |
|
/** |
285 |
|
* setException causes get to throw ExecutionException |
286 |
|
*/ |
287 |
< |
public void testSetException() { |
287 |
> |
public void testSetException_get() throws Exception { |
288 |
|
Exception nse = new NoSuchElementException(); |
289 |
< |
MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
289 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
290 |
|
task.setException(nse); |
291 |
+ |
|
292 |
|
try { |
293 |
< |
Object x = task.get(); |
293 |
> |
task.get(); |
294 |
|
shouldThrow(); |
295 |
+ |
} catch (ExecutionException success) { |
296 |
+ |
assertSame(nse, success.getCause()); |
297 |
+ |
checkCompletedAbnormally(task, nse); |
298 |
|
} |
299 |
< |
catch(ExecutionException ee) { |
300 |
< |
Throwable cause = ee.getCause(); |
301 |
< |
assertEquals(cause, nse); |
302 |
< |
} |
303 |
< |
catch(Exception e) { |
304 |
< |
unexpectedException(); |
299 |
> |
|
300 |
> |
try { |
301 |
> |
task.get(LONG_DELAY_MS, MILLISECONDS); |
302 |
> |
shouldThrow(); |
303 |
> |
} catch (ExecutionException success) { |
304 |
> |
assertSame(nse, success.getCause()); |
305 |
> |
checkCompletedAbnormally(task, nse); |
306 |
|
} |
307 |
+ |
|
308 |
+ |
assertEquals(1, task.setExceptionCount()); |
309 |
+ |
assertEquals(0, task.setCount()); |
310 |
+ |
tryToConfuseDoneTask(task); |
311 |
+ |
checkCompletedAbnormally(task, nse); |
312 |
+ |
assertEquals(0, task.runCount()); |
313 |
|
} |
314 |
|
|
315 |
|
/** |
316 |
< |
* Cancelling before running succeeds |
316 |
> |
* cancel(false) before run succeeds |
317 |
|
*/ |
318 |
|
public void testCancelBeforeRun() { |
319 |
< |
FutureTask task = new FutureTask( new NoOpCallable()); |
319 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
320 |
|
assertTrue(task.cancel(false)); |
321 |
< |
task.run(); |
322 |
< |
assertTrue(task.isDone()); |
323 |
< |
assertTrue(task.isCancelled()); |
321 |
> |
task.run(); |
322 |
> |
assertEquals(0, task.runCount()); |
323 |
> |
assertEquals(0, task.setCount()); |
324 |
> |
assertEquals(0, task.setExceptionCount()); |
325 |
> |
assertTrue(task.isCancelled()); |
326 |
> |
assertTrue(task.isDone()); |
327 |
> |
tryToConfuseDoneTask(task); |
328 |
> |
assertEquals(0, task.runCount()); |
329 |
> |
checkCancelled(task); |
330 |
|
} |
331 |
|
|
332 |
|
/** |
333 |
< |
* Cancel(true) before run succeeds |
333 |
> |
* cancel(true) before run succeeds |
334 |
|
*/ |
335 |
|
public void testCancelBeforeRun2() { |
336 |
< |
FutureTask task = new FutureTask( new NoOpCallable()); |
336 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
337 |
|
assertTrue(task.cancel(true)); |
338 |
< |
task.run(); |
339 |
< |
assertTrue(task.isDone()); |
340 |
< |
assertTrue(task.isCancelled()); |
338 |
> |
task.run(); |
339 |
> |
assertEquals(0, task.runCount()); |
340 |
> |
assertEquals(0, task.setCount()); |
341 |
> |
assertEquals(0, task.setExceptionCount()); |
342 |
> |
assertTrue(task.isCancelled()); |
343 |
> |
assertTrue(task.isDone()); |
344 |
> |
tryToConfuseDoneTask(task); |
345 |
> |
assertEquals(0, task.runCount()); |
346 |
> |
checkCancelled(task); |
347 |
|
} |
348 |
|
|
349 |
|
/** |
350 |
< |
* cancel of a completed task fails |
350 |
> |
* cancel(false) of a completed task fails |
351 |
|
*/ |
352 |
|
public void testCancelAfterRun() { |
353 |
< |
FutureTask task = new FutureTask( new NoOpCallable()); |
354 |
< |
task.run(); |
353 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
354 |
> |
task.run(); |
355 |
|
assertFalse(task.cancel(false)); |
356 |
< |
assertTrue(task.isDone()); |
357 |
< |
assertFalse(task.isCancelled()); |
356 |
> |
assertEquals(1, task.runCount()); |
357 |
> |
assertEquals(1, task.setCount()); |
358 |
> |
assertEquals(0, task.setExceptionCount()); |
359 |
> |
tryToConfuseDoneTask(task); |
360 |
> |
checkCompletedNormally(task, Boolean.TRUE); |
361 |
> |
assertEquals(1, task.runCount()); |
362 |
> |
} |
363 |
> |
|
364 |
> |
/** |
365 |
> |
* cancel(true) of a completed task fails |
366 |
> |
*/ |
367 |
> |
public void testCancelAfterRun2() { |
368 |
> |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
369 |
> |
task.run(); |
370 |
> |
assertFalse(task.cancel(true)); |
371 |
> |
assertEquals(1, task.runCount()); |
372 |
> |
assertEquals(1, task.setCount()); |
373 |
> |
assertEquals(0, task.setExceptionCount()); |
374 |
> |
tryToConfuseDoneTask(task); |
375 |
> |
checkCompletedNormally(task, Boolean.TRUE); |
376 |
> |
assertEquals(1, task.runCount()); |
377 |
|
} |
378 |
|
|
379 |
|
/** |
380 |
< |
* cancel(true) interrupts a running task |
380 |
> |
* cancel(true) interrupts a running task that subsequently succeeds |
381 |
|
*/ |
382 |
|
public void testCancelInterrupt() { |
383 |
< |
FutureTask task = new FutureTask( new Callable() { |
384 |
< |
public Object call() { |
383 |
> |
final CountDownLatch pleaseCancel = new CountDownLatch(1); |
384 |
> |
final PublicFutureTask task = |
385 |
> |
new PublicFutureTask(new CheckedRunnable() { |
386 |
> |
public void realRun() { |
387 |
> |
pleaseCancel.countDown(); |
388 |
|
try { |
389 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
390 |
< |
threadShouldThrow(); |
391 |
< |
} |
392 |
< |
catch (InterruptedException success) {} |
393 |
< |
return Boolean.TRUE; |
394 |
< |
} }); |
395 |
< |
Thread t = new Thread(task); |
389 |
> |
delay(LONG_DELAY_MS); |
390 |
> |
shouldThrow(); |
391 |
> |
} catch (InterruptedException success) {} |
392 |
> |
}}); |
393 |
> |
|
394 |
> |
Thread t = newStartedThread(task); |
395 |
> |
await(pleaseCancel); |
396 |
> |
assertTrue(task.cancel(true)); |
397 |
> |
assertTrue(task.isCancelled()); |
398 |
> |
assertTrue(task.isDone()); |
399 |
> |
awaitTermination(t); |
400 |
> |
assertEquals(1, task.runCount()); |
401 |
> |
assertEquals(1, task.setCount()); |
402 |
> |
assertEquals(0, task.setExceptionCount()); |
403 |
> |
tryToConfuseDoneTask(task); |
404 |
> |
checkCancelled(task); |
405 |
> |
} |
406 |
> |
|
407 |
> |
/** |
408 |
> |
* cancel(true) tries to interrupt a running task, but |
409 |
> |
* Thread.interrupt throws (simulating a restrictive security |
410 |
> |
* manager) |
411 |
> |
*/ |
412 |
> |
public void testCancelInterrupt_ThrowsSecurityException() { |
413 |
> |
final CountDownLatch pleaseCancel = new CountDownLatch(1); |
414 |
> |
final CountDownLatch cancelled = new CountDownLatch(1); |
415 |
> |
final PublicFutureTask task = |
416 |
> |
new PublicFutureTask(new CheckedRunnable() { |
417 |
> |
public void realRun() { |
418 |
> |
pleaseCancel.countDown(); |
419 |
> |
await(cancelled); |
420 |
> |
assertFalse(Thread.interrupted()); |
421 |
> |
}}); |
422 |
> |
|
423 |
> |
final Thread t = new Thread(task) { |
424 |
> |
// Simulate a restrictive security manager. |
425 |
> |
@Override public void interrupt() { |
426 |
> |
throw new SecurityException(); |
427 |
> |
}}; |
428 |
> |
t.setDaemon(true); |
429 |
|
t.start(); |
430 |
< |
|
430 |
> |
|
431 |
> |
await(pleaseCancel); |
432 |
|
try { |
433 |
< |
Thread.sleep(SHORT_DELAY_MS); |
434 |
< |
assertTrue(task.cancel(true)); |
435 |
< |
t.join(); |
436 |
< |
assertTrue(task.isDone()); |
437 |
< |
assertTrue(task.isCancelled()); |
438 |
< |
} catch(InterruptedException e){ |
439 |
< |
unexpectedException(); |
440 |
< |
} |
433 |
> |
task.cancel(true); |
434 |
> |
shouldThrow(); |
435 |
> |
} catch (SecurityException expected) {} |
436 |
> |
|
437 |
> |
// We failed to deliver the interrupt, but the world retains |
438 |
> |
// its sanity, as if we had done task.cancel(false) |
439 |
> |
assertTrue(task.isCancelled()); |
440 |
> |
assertTrue(task.isDone()); |
441 |
> |
assertEquals(1, task.runCount()); |
442 |
> |
assertEquals(1, task.doneCount()); |
443 |
> |
assertEquals(0, task.setCount()); |
444 |
> |
assertEquals(0, task.setExceptionCount()); |
445 |
> |
cancelled.countDown(); |
446 |
> |
awaitTermination(t); |
447 |
> |
assertEquals(1, task.setCount()); |
448 |
> |
assertEquals(0, task.setExceptionCount()); |
449 |
> |
tryToConfuseDoneTask(task); |
450 |
> |
checkCancelled(task); |
451 |
|
} |
452 |
|
|
453 |
+ |
/** |
454 |
+ |
* cancel(true) interrupts a running task that subsequently throws |
455 |
+ |
*/ |
456 |
+ |
public void testCancelInterrupt_taskFails() { |
457 |
+ |
final CountDownLatch pleaseCancel = new CountDownLatch(1); |
458 |
+ |
final PublicFutureTask task = |
459 |
+ |
new PublicFutureTask(new Runnable() { |
460 |
+ |
public void run() { |
461 |
+ |
try { |
462 |
+ |
pleaseCancel.countDown(); |
463 |
+ |
delay(LONG_DELAY_MS); |
464 |
+ |
} finally { throw new RuntimeException(); } |
465 |
+ |
}}); |
466 |
+ |
|
467 |
+ |
Thread t = newStartedThread(task); |
468 |
+ |
await(pleaseCancel); |
469 |
+ |
assertTrue(task.cancel(true)); |
470 |
+ |
assertTrue(task.isCancelled()); |
471 |
+ |
awaitTermination(t); |
472 |
+ |
assertEquals(1, task.runCount()); |
473 |
+ |
assertEquals(0, task.setCount()); |
474 |
+ |
assertEquals(1, task.setExceptionCount()); |
475 |
+ |
tryToConfuseDoneTask(task); |
476 |
+ |
checkCancelled(task); |
477 |
+ |
} |
478 |
|
|
479 |
|
/** |
480 |
|
* cancel(false) does not interrupt a running task |
481 |
|
*/ |
482 |
|
public void testCancelNoInterrupt() { |
483 |
< |
FutureTask task = new FutureTask( new Callable() { |
484 |
< |
public Object call() { |
485 |
< |
try { |
486 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
487 |
< |
} |
488 |
< |
catch (InterruptedException success) { |
489 |
< |
threadFail("should not interrupt"); |
490 |
< |
} |
483 |
> |
final CountDownLatch pleaseCancel = new CountDownLatch(1); |
484 |
> |
final CountDownLatch cancelled = new CountDownLatch(1); |
485 |
> |
final PublicFutureTask task = |
486 |
> |
new PublicFutureTask(new CheckedCallable<Boolean>() { |
487 |
> |
public Boolean realCall() { |
488 |
> |
pleaseCancel.countDown(); |
489 |
> |
await(cancelled); |
490 |
> |
assertFalse(Thread.interrupted()); |
491 |
|
return Boolean.TRUE; |
492 |
< |
} }); |
493 |
< |
Thread t = new Thread(task); |
494 |
< |
t.start(); |
495 |
< |
|
496 |
< |
try { |
497 |
< |
Thread.sleep(SHORT_DELAY_MS); |
498 |
< |
assertTrue(task.cancel(false)); |
499 |
< |
t.join(); |
500 |
< |
assertTrue(task.isDone()); |
501 |
< |
assertTrue(task.isCancelled()); |
502 |
< |
} catch(InterruptedException e){ |
503 |
< |
unexpectedException(); |
504 |
< |
} |
492 |
> |
}}); |
493 |
> |
|
494 |
> |
Thread t = newStartedThread(task); |
495 |
> |
await(pleaseCancel); |
496 |
> |
assertTrue(task.cancel(false)); |
497 |
> |
assertTrue(task.isCancelled()); |
498 |
> |
cancelled.countDown(); |
499 |
> |
awaitTermination(t); |
500 |
> |
assertEquals(1, task.runCount()); |
501 |
> |
assertEquals(1, task.setCount()); |
502 |
> |
assertEquals(0, task.setExceptionCount()); |
503 |
> |
tryToConfuseDoneTask(task); |
504 |
> |
checkCancelled(task); |
505 |
|
} |
506 |
|
|
507 |
|
/** |
508 |
< |
* set in one thread causes get in another thread to retrieve value |
509 |
< |
*/ |
510 |
< |
public void testGet1() { |
511 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
512 |
< |
public Object call() { |
513 |
< |
try { |
514 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
515 |
< |
} catch(InterruptedException e){ |
516 |
< |
threadUnexpectedException(); |
517 |
< |
} |
518 |
< |
return Boolean.TRUE; |
519 |
< |
} |
520 |
< |
}); |
521 |
< |
Thread t = new Thread(new Runnable() { |
522 |
< |
public void run() { |
523 |
< |
try { |
524 |
< |
ft.get(); |
525 |
< |
} catch(Exception e){ |
526 |
< |
threadUnexpectedException(); |
527 |
< |
} |
528 |
< |
} |
529 |
< |
}); |
530 |
< |
try { |
531 |
< |
assertFalse(ft.isDone()); |
532 |
< |
assertFalse(ft.isCancelled()); |
533 |
< |
t.start(); |
534 |
< |
Thread.sleep(SHORT_DELAY_MS); |
535 |
< |
ft.run(); |
536 |
< |
t.join(); |
537 |
< |
assertTrue(ft.isDone()); |
538 |
< |
assertFalse(ft.isCancelled()); |
539 |
< |
} catch(InterruptedException e){ |
540 |
< |
unexpectedException(); |
541 |
< |
|
542 |
< |
} |
508 |
> |
* run in one thread causes get in another thread to retrieve value |
509 |
> |
*/ |
510 |
> |
public void testGetRun() { |
511 |
> |
final CountDownLatch pleaseRun = new CountDownLatch(2); |
512 |
> |
|
513 |
> |
final PublicFutureTask task = |
514 |
> |
new PublicFutureTask(new CheckedCallable<Object>() { |
515 |
> |
public Object realCall() { |
516 |
> |
return two; |
517 |
> |
}}); |
518 |
> |
|
519 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
520 |
> |
public void realRun() throws Exception { |
521 |
> |
pleaseRun.countDown(); |
522 |
> |
assertSame(two, task.get()); |
523 |
> |
}}); |
524 |
> |
|
525 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
526 |
> |
public void realRun() throws Exception { |
527 |
> |
pleaseRun.countDown(); |
528 |
> |
assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS)); |
529 |
> |
}}); |
530 |
> |
|
531 |
> |
await(pleaseRun); |
532 |
> |
checkNotDone(task); |
533 |
> |
assertTrue(t1.isAlive()); |
534 |
> |
assertTrue(t2.isAlive()); |
535 |
> |
task.run(); |
536 |
> |
checkCompletedNormally(task, two); |
537 |
> |
assertEquals(1, task.runCount()); |
538 |
> |
assertEquals(1, task.setCount()); |
539 |
> |
assertEquals(0, task.setExceptionCount()); |
540 |
> |
awaitTermination(t1); |
541 |
> |
awaitTermination(t2); |
542 |
> |
tryToConfuseDoneTask(task); |
543 |
> |
checkCompletedNormally(task, two); |
544 |
|
} |
545 |
|
|
546 |
|
/** |
547 |
< |
* set in one thread causes timed get in another thread to retrieve value |
548 |
< |
*/ |
549 |
< |
public void testTimedGet1() { |
550 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
551 |
< |
public Object call() { |
552 |
< |
try { |
553 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
554 |
< |
} catch(InterruptedException e){ |
555 |
< |
threadUnexpectedException(); |
556 |
< |
} |
557 |
< |
return Boolean.TRUE; |
558 |
< |
} |
559 |
< |
}); |
560 |
< |
Thread t = new Thread(new Runnable() { |
561 |
< |
public void run() { |
562 |
< |
try { |
563 |
< |
ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
564 |
< |
} catch(TimeoutException success) { |
565 |
< |
} catch(Exception e){ |
566 |
< |
threadUnexpectedException(); |
567 |
< |
} |
568 |
< |
} |
569 |
< |
}); |
570 |
< |
try { |
571 |
< |
assertFalse(ft.isDone()); |
572 |
< |
assertFalse(ft.isCancelled()); |
573 |
< |
t.start(); |
574 |
< |
ft.run(); |
575 |
< |
t.join(); |
576 |
< |
assertTrue(ft.isDone()); |
577 |
< |
assertFalse(ft.isCancelled()); |
578 |
< |
} catch(InterruptedException e){ |
579 |
< |
unexpectedException(); |
580 |
< |
|
581 |
< |
} |
547 |
> |
* set in one thread causes get in another thread to retrieve value |
548 |
> |
*/ |
549 |
> |
public void testGetSet() { |
550 |
> |
final CountDownLatch pleaseSet = new CountDownLatch(2); |
551 |
> |
|
552 |
> |
final PublicFutureTask task = |
553 |
> |
new PublicFutureTask(new CheckedCallable<Object>() { |
554 |
> |
public Object realCall() throws InterruptedException { |
555 |
> |
return two; |
556 |
> |
}}); |
557 |
> |
|
558 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
559 |
> |
public void realRun() throws Exception { |
560 |
> |
pleaseSet.countDown(); |
561 |
> |
assertSame(two, task.get()); |
562 |
> |
}}); |
563 |
> |
|
564 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
565 |
> |
public void realRun() throws Exception { |
566 |
> |
pleaseSet.countDown(); |
567 |
> |
assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS)); |
568 |
> |
}}); |
569 |
> |
|
570 |
> |
await(pleaseSet); |
571 |
> |
checkNotDone(task); |
572 |
> |
assertTrue(t1.isAlive()); |
573 |
> |
assertTrue(t2.isAlive()); |
574 |
> |
task.set(two); |
575 |
> |
assertEquals(0, task.runCount()); |
576 |
> |
assertEquals(1, task.setCount()); |
577 |
> |
assertEquals(0, task.setExceptionCount()); |
578 |
> |
tryToConfuseDoneTask(task); |
579 |
> |
checkCompletedNormally(task, two); |
580 |
> |
awaitTermination(t1); |
581 |
> |
awaitTermination(t2); |
582 |
|
} |
583 |
|
|
584 |
|
/** |
585 |
< |
* Cancelling a task causes timed get in another thread to throw CancellationException |
585 |
> |
* Cancelling a task causes timed get in another thread to throw |
586 |
> |
* CancellationException |
587 |
|
*/ |
588 |
|
public void testTimedGet_Cancellation() { |
589 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
590 |
< |
public Object call() { |
591 |
< |
try { |
592 |
< |
Thread.sleep(SMALL_DELAY_MS); |
593 |
< |
threadShouldThrow(); |
594 |
< |
} catch(InterruptedException e) { |
595 |
< |
} |
596 |
< |
return Boolean.TRUE; |
597 |
< |
} |
598 |
< |
}); |
599 |
< |
try { |
600 |
< |
Thread t1 = new Thread(new Runnable() { |
601 |
< |
public void run() { |
602 |
< |
try { |
603 |
< |
ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
604 |
< |
threadShouldThrow(); |
605 |
< |
} catch(CancellationException success) {} |
606 |
< |
catch(Exception e){ |
607 |
< |
threadUnexpectedException(); |
608 |
< |
} |
609 |
< |
} |
610 |
< |
}); |
611 |
< |
Thread t2 = new Thread(ft); |
612 |
< |
t1.start(); |
589 |
> |
for (final boolean mayInterruptIfRunning : |
590 |
> |
new boolean[] { true, false }) { |
591 |
> |
final CountDownLatch pleaseCancel = new CountDownLatch(3); |
592 |
> |
final CountDownLatch cancelled = new CountDownLatch(1); |
593 |
> |
final PublicFutureTask task = |
594 |
> |
new PublicFutureTask(new CheckedCallable<Object>() { |
595 |
> |
public Object realCall() throws InterruptedException { |
596 |
> |
pleaseCancel.countDown(); |
597 |
> |
if (mayInterruptIfRunning) { |
598 |
> |
try { |
599 |
> |
delay(2*LONG_DELAY_MS); |
600 |
> |
} catch (InterruptedException success) {} |
601 |
> |
} else { |
602 |
> |
await(cancelled); |
603 |
> |
} |
604 |
> |
return two; |
605 |
> |
}}); |
606 |
> |
|
607 |
> |
Thread t1 = new ThreadShouldThrow(CancellationException.class) { |
608 |
> |
public void realRun() throws Exception { |
609 |
> |
pleaseCancel.countDown(); |
610 |
> |
task.get(); |
611 |
> |
}}; |
612 |
> |
Thread t2 = new ThreadShouldThrow(CancellationException.class) { |
613 |
> |
public void realRun() throws Exception { |
614 |
> |
pleaseCancel.countDown(); |
615 |
> |
task.get(2*LONG_DELAY_MS, MILLISECONDS); |
616 |
> |
}}; |
617 |
> |
t1.start(); |
618 |
|
t2.start(); |
619 |
< |
Thread.sleep(SHORT_DELAY_MS); |
620 |
< |
ft.cancel(true); |
621 |
< |
t1.join(); |
622 |
< |
t2.join(); |
623 |
< |
} catch(InterruptedException ie){ |
624 |
< |
unexpectedException(); |
619 |
> |
Thread t3 = newStartedThread(task); |
620 |
> |
await(pleaseCancel); |
621 |
> |
checkIsRunning(task); |
622 |
> |
task.cancel(mayInterruptIfRunning); |
623 |
> |
checkCancelled(task); |
624 |
> |
awaitTermination(t1); |
625 |
> |
awaitTermination(t2); |
626 |
> |
cancelled.countDown(); |
627 |
> |
awaitTermination(t3); |
628 |
> |
assertEquals(1, task.runCount()); |
629 |
> |
assertEquals(1, task.setCount()); |
630 |
> |
assertEquals(0, task.setExceptionCount()); |
631 |
> |
tryToConfuseDoneTask(task); |
632 |
> |
checkCancelled(task); |
633 |
|
} |
634 |
|
} |
635 |
|
|
636 |
|
/** |
637 |
< |
* Cancelling a task causes get in another thread to throw CancellationException |
638 |
< |
*/ |
639 |
< |
public void testGet_Cancellation() { |
640 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
641 |
< |
public Object call() { |
642 |
< |
try { |
643 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
644 |
< |
threadShouldThrow(); |
645 |
< |
} catch(InterruptedException e){ |
646 |
< |
} |
647 |
< |
return Boolean.TRUE; |
648 |
< |
} |
649 |
< |
}); |
650 |
< |
try { |
651 |
< |
Thread t1 = new Thread(new Runnable() { |
652 |
< |
public void run() { |
653 |
< |
try { |
654 |
< |
ft.get(); |
655 |
< |
threadShouldThrow(); |
656 |
< |
} catch(CancellationException success){ |
369 |
< |
} |
370 |
< |
catch(Exception e){ |
371 |
< |
threadUnexpectedException(); |
372 |
< |
} |
373 |
< |
} |
374 |
< |
}); |
375 |
< |
Thread t2 = new Thread(ft); |
376 |
< |
t1.start(); |
377 |
< |
t2.start(); |
378 |
< |
Thread.sleep(SHORT_DELAY_MS); |
379 |
< |
ft.cancel(true); |
380 |
< |
t1.join(); |
381 |
< |
t2.join(); |
382 |
< |
} catch(InterruptedException success){ |
383 |
< |
unexpectedException(); |
637 |
> |
* A runtime exception in task causes get to throw ExecutionException |
638 |
> |
*/ |
639 |
> |
public void testGet_ExecutionException() throws InterruptedException { |
640 |
> |
final ArithmeticException e = new ArithmeticException(); |
641 |
> |
final PublicFutureTask task = new PublicFutureTask(new Callable() { |
642 |
> |
public Object call() { |
643 |
> |
throw e; |
644 |
> |
}}); |
645 |
> |
|
646 |
> |
task.run(); |
647 |
> |
assertEquals(1, task.runCount()); |
648 |
> |
assertEquals(0, task.setCount()); |
649 |
> |
assertEquals(1, task.setExceptionCount()); |
650 |
> |
try { |
651 |
> |
task.get(); |
652 |
> |
shouldThrow(); |
653 |
> |
} catch (ExecutionException success) { |
654 |
> |
assertSame(e, success.getCause()); |
655 |
> |
tryToConfuseDoneTask(task); |
656 |
> |
checkCompletedAbnormally(task, success.getCause()); |
657 |
|
} |
658 |
|
} |
386 |
– |
|
659 |
|
|
660 |
|
/** |
661 |
< |
* A runtime exception in task causes get to throw ExecutionException |
661 |
> |
* A runtime exception in task causes timed get to throw ExecutionException |
662 |
|
*/ |
663 |
< |
public void testGet_ExecutionException() { |
664 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
665 |
< |
public Object call() { |
666 |
< |
int i = 5/0; |
667 |
< |
return Boolean.TRUE; |
668 |
< |
} |
669 |
< |
}); |
670 |
< |
try { |
671 |
< |
ft.run(); |
672 |
< |
ft.get(); |
673 |
< |
shouldThrow(); |
674 |
< |
} catch(ExecutionException success){ |
675 |
< |
} |
676 |
< |
catch(Exception e){ |
677 |
< |
unexpectedException(); |
406 |
< |
} |
407 |
< |
} |
408 |
< |
|
409 |
< |
/** |
410 |
< |
* A runtime exception in task causes timed get to throw ExecutionException |
411 |
< |
*/ |
412 |
< |
public void testTimedGet_ExecutionException2() { |
413 |
< |
final FutureTask ft = new FutureTask(new Callable() { |
414 |
< |
public Object call() { |
415 |
< |
int i = 5/0; |
416 |
< |
return Boolean.TRUE; |
417 |
< |
} |
418 |
< |
}); |
419 |
< |
try { |
420 |
< |
ft.run(); |
421 |
< |
ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
422 |
< |
shouldThrow(); |
423 |
< |
} catch(ExecutionException success) { |
424 |
< |
} catch(TimeoutException success) { } // unlikely but OK |
425 |
< |
catch(Exception e){ |
426 |
< |
unexpectedException(); |
427 |
< |
} |
428 |
< |
} |
429 |
< |
|
430 |
< |
|
431 |
< |
/** |
432 |
< |
* Interrupting a waiting get causes it to throw InterruptedException |
433 |
< |
*/ |
434 |
< |
public void testGet_InterruptedException() { |
435 |
< |
final FutureTask ft = new FutureTask(new NoOpCallable()); |
436 |
< |
Thread t = new Thread(new Runnable() { |
437 |
< |
public void run() { |
438 |
< |
try { |
439 |
< |
ft.get(); |
440 |
< |
threadShouldThrow(); |
441 |
< |
} catch(InterruptedException success){ |
442 |
< |
} catch(Exception e){ |
443 |
< |
threadUnexpectedException(); |
444 |
< |
} |
445 |
< |
} |
446 |
< |
}); |
447 |
< |
try { |
448 |
< |
t.start(); |
449 |
< |
Thread.sleep(SHORT_DELAY_MS); |
450 |
< |
t.interrupt(); |
451 |
< |
t.join(); |
452 |
< |
} catch(Exception e){ |
453 |
< |
unexpectedException(); |
454 |
< |
} |
455 |
< |
} |
456 |
< |
|
457 |
< |
/** |
458 |
< |
* Interrupting a waiting timed get causes it to throw InterruptedException |
459 |
< |
*/ |
460 |
< |
public void testTimedGet_InterruptedException2() { |
461 |
< |
final FutureTask ft = new FutureTask(new NoOpCallable()); |
462 |
< |
Thread t = new Thread(new Runnable() { |
463 |
< |
public void run() { |
464 |
< |
try { |
465 |
< |
ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS); |
466 |
< |
threadShouldThrow(); |
467 |
< |
} catch(InterruptedException success){} |
468 |
< |
catch(Exception e){ |
469 |
< |
threadUnexpectedException(); |
470 |
< |
} |
471 |
< |
} |
472 |
< |
}); |
473 |
< |
try { |
474 |
< |
t.start(); |
475 |
< |
Thread.sleep(SHORT_DELAY_MS); |
476 |
< |
t.interrupt(); |
477 |
< |
t.join(); |
478 |
< |
} catch(Exception e){ |
479 |
< |
unexpectedException(); |
663 |
> |
public void testTimedGet_ExecutionException2() throws Exception { |
664 |
> |
final ArithmeticException e = new ArithmeticException(); |
665 |
> |
final PublicFutureTask task = new PublicFutureTask(new Callable() { |
666 |
> |
public Object call() { |
667 |
> |
throw e; |
668 |
> |
}}); |
669 |
> |
|
670 |
> |
task.run(); |
671 |
> |
try { |
672 |
> |
task.get(LONG_DELAY_MS, MILLISECONDS); |
673 |
> |
shouldThrow(); |
674 |
> |
} catch (ExecutionException success) { |
675 |
> |
assertSame(e, success.getCause()); |
676 |
> |
tryToConfuseDoneTask(task); |
677 |
> |
checkCompletedAbnormally(task, success.getCause()); |
678 |
|
} |
679 |
|
} |
680 |
< |
|
680 |
> |
|
681 |
> |
/** |
682 |
> |
* get is interruptible |
683 |
> |
*/ |
684 |
> |
public void testGet_interruptible() { |
685 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
686 |
> |
final FutureTask task = new FutureTask(new NoOpCallable()); |
687 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
688 |
> |
public void realRun() throws Exception { |
689 |
> |
Thread.currentThread().interrupt(); |
690 |
> |
try { |
691 |
> |
task.get(); |
692 |
> |
shouldThrow(); |
693 |
> |
} catch (InterruptedException success) {} |
694 |
> |
assertFalse(Thread.interrupted()); |
695 |
> |
|
696 |
> |
pleaseInterrupt.countDown(); |
697 |
> |
try { |
698 |
> |
task.get(); |
699 |
> |
shouldThrow(); |
700 |
> |
} catch (InterruptedException success) {} |
701 |
> |
assertFalse(Thread.interrupted()); |
702 |
> |
}}); |
703 |
> |
|
704 |
> |
await(pleaseInterrupt); |
705 |
> |
t.interrupt(); |
706 |
> |
awaitTermination(t); |
707 |
> |
checkNotDone(task); |
708 |
> |
} |
709 |
> |
|
710 |
> |
/** |
711 |
> |
* timed get is interruptible |
712 |
> |
*/ |
713 |
> |
public void testTimedGet_interruptible() { |
714 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
715 |
> |
final FutureTask task = new FutureTask(new NoOpCallable()); |
716 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
717 |
> |
public void realRun() throws Exception { |
718 |
> |
Thread.currentThread().interrupt(); |
719 |
> |
try { |
720 |
> |
task.get(2*LONG_DELAY_MS, MILLISECONDS); |
721 |
> |
shouldThrow(); |
722 |
> |
} catch (InterruptedException success) {} |
723 |
> |
assertFalse(Thread.interrupted()); |
724 |
> |
|
725 |
> |
pleaseInterrupt.countDown(); |
726 |
> |
try { |
727 |
> |
task.get(2*LONG_DELAY_MS, MILLISECONDS); |
728 |
> |
shouldThrow(); |
729 |
> |
} catch (InterruptedException success) {} |
730 |
> |
assertFalse(Thread.interrupted()); |
731 |
> |
}}); |
732 |
> |
|
733 |
> |
await(pleaseInterrupt); |
734 |
> |
t.interrupt(); |
735 |
> |
awaitTermination(t); |
736 |
> |
checkNotDone(task); |
737 |
> |
} |
738 |
> |
|
739 |
|
/** |
740 |
|
* A timed out timed get throws TimeoutException |
741 |
|
*/ |
742 |
< |
public void testGet_TimeoutException() { |
743 |
< |
try { |
744 |
< |
FutureTask ft = new FutureTask(new NoOpCallable()); |
745 |
< |
ft.get(1,TimeUnit.MILLISECONDS); |
746 |
< |
shouldThrow(); |
747 |
< |
} catch(TimeoutException success){} |
748 |
< |
catch(Exception success){ |
749 |
< |
unexpectedException(); |
750 |
< |
} |
742 |
> |
public void testGet_TimeoutException() throws Exception { |
743 |
> |
FutureTask task = new FutureTask(new NoOpCallable()); |
744 |
> |
long startTime = System.nanoTime(); |
745 |
> |
try { |
746 |
> |
task.get(timeoutMillis(), MILLISECONDS); |
747 |
> |
shouldThrow(); |
748 |
> |
} catch (TimeoutException success) { |
749 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
750 |
> |
} |
751 |
|
} |
752 |
< |
|
752 |
> |
|
753 |
> |
/** |
754 |
> |
* timed get with null TimeUnit throws NullPointerException |
755 |
> |
*/ |
756 |
> |
public void testGet_NullTimeUnit() throws Exception { |
757 |
> |
FutureTask task = new FutureTask(new NoOpCallable()); |
758 |
> |
long[] timeouts = { Long.MIN_VALUE, 0L, Long.MAX_VALUE }; |
759 |
> |
|
760 |
> |
for (long timeout : timeouts) { |
761 |
> |
try { |
762 |
> |
task.get(timeout, null); |
763 |
> |
shouldThrow(); |
764 |
> |
} catch (NullPointerException success) {} |
765 |
> |
} |
766 |
> |
|
767 |
> |
task.run(); |
768 |
> |
|
769 |
> |
for (long timeout : timeouts) { |
770 |
> |
try { |
771 |
> |
task.get(timeout, null); |
772 |
> |
shouldThrow(); |
773 |
> |
} catch (NullPointerException success) {} |
774 |
> |
} |
775 |
> |
} |
776 |
> |
|
777 |
|
} |