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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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*/ |
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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.*; |
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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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} |
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public static Test suite() { |
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return new TestSuite(FutureTaskTest.class); |
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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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} |
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|
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public void testConstructor(){ |
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try { |
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FutureTask task = new FutureTask(null); |
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fail("should throw"); |
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} |
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catch(NullPointerException success) { |
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} |
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} |
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|
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public void testConstructor2(){ |
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try { |
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FutureTask task = new FutureTask(null, Boolean.TRUE); |
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fail("should throw"); |
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} |
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catch(NullPointerException success) { |
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} |
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} |
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|
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public void testIsDone(){ |
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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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|
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public void testReset(){ |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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task.run(); |
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assertTrue(task.isDone()); |
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assertTrue(task.reset()); |
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} |
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|
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public void testResetAfterCancel() { |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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assertTrue(task.cancel(false)); |
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task.run(); |
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assertTrue(task.isDone()); |
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assertTrue(task.isCancelled()); |
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assertFalse(task.reset()); |
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} |
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|
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public void testSetDone() { |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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task.setDone(); |
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assertTrue(task.isDone()); |
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assertFalse(task.isCancelled()); |
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} |
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|
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public void testSetCancelled() { |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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assertTrue(task.cancel(false)); |
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task.setCancelled(); |
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assertTrue(task.isDone()); |
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assertTrue(task.isCancelled()); |
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} |
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|
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public void testSet() { |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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task.set(one); |
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try { |
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assertEquals(task.get(), one); |
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} |
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catch(Exception e) { |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testSetException() { |
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Exception nse = new NoSuchElementException(); |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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task.setException(nse); |
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try { |
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Object x = task.get(); |
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fail("should throw"); |
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} |
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catch(ExecutionException ee) { |
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Throwable cause = ee.getCause(); |
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assertEquals(cause, nse); |
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} |
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catch(Exception e) { |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testCancelBeforeRun() { |
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FutureTask task = new FutureTask( new NoOpCallable()); |
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assertTrue(task.cancel(false)); |
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task.run(); |
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assertTrue(task.isDone()); |
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assertTrue(task.isCancelled()); |
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} |
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|
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public void testCancelBeforeRun2() { |
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FutureTask task = new FutureTask( new NoOpCallable()); |
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assertTrue(task.cancel(true)); |
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task.run(); |
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assertTrue(task.isDone()); |
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assertTrue(task.isCancelled()); |
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} |
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|
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public void testCancelAfterRun() { |
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FutureTask task = new FutureTask( new NoOpCallable()); |
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task.run(); |
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assertFalse(task.cancel(false)); |
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assertTrue(task.isDone()); |
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assertFalse(task.isCancelled()); |
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} |
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|
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public void testCancelInterrupt(){ |
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FutureTask task = new FutureTask( new Callable() { |
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public Object call() { |
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try { |
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Thread.sleep(MEDIUM_DELAY_MS); |
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threadFail("should throw"); |
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} |
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catch (InterruptedException success) {} |
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return Boolean.TRUE; |
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} }); |
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Thread t = new Thread(task); |
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t.start(); |
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|
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try{ |
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Thread.sleep(SHORT_DELAY_MS); |
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assertTrue(task.cancel(true)); |
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t.join(); |
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assertTrue(task.isDone()); |
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assertTrue(task.isCancelled()); |
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} catch(InterruptedException e){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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|
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public void testCancelNoInterrupt(){ |
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FutureTask task = new FutureTask( new Callable() { |
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public Object call() { |
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try { |
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Thread.sleep(MEDIUM_DELAY_MS); |
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} |
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catch (InterruptedException success) { |
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threadFail("should not interrupt"); |
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} |
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return Boolean.TRUE; |
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} }); |
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Thread t = new Thread(task); |
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t.start(); |
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|
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try{ |
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Thread.sleep(SHORT_DELAY_MS); |
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assertTrue(task.cancel(false)); |
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t.join(); |
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assertTrue(task.isDone()); |
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assertTrue(task.isCancelled()); |
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} catch(InterruptedException e){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testGet1() { |
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final FutureTask ft = new FutureTask(new Callable(){ |
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public Object call(){ |
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try{ |
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Thread.sleep(MEDIUM_DELAY_MS); |
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} catch(InterruptedException e){ |
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threadFail("unexpected exception"); |
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} |
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return Boolean.TRUE; |
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} |
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}); |
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Thread t = new Thread(new Runnable(){ |
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public void run(){ |
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try{ |
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ft.get(); |
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} catch(Exception e){ |
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threadFail("unexpected exception"); |
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} |
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} |
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}); |
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try{ |
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assertFalse(ft.isDone()); |
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assertFalse(ft.isCancelled()); |
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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ft.run(); |
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t.join(); |
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assertTrue(ft.isDone()); |
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assertFalse(ft.isCancelled()); |
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} catch(InterruptedException e){ |
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fail("unexpected exception"); |
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|
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} |
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} |
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|
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public void testTimedGet1() { |
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final FutureTask ft = new FutureTask(new Callable(){ |
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public Object call(){ |
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try{ |
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Thread.sleep(MEDIUM_DELAY_MS); |
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} catch(InterruptedException e){ |
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threadFail("unexpected exception"); |
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} |
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return Boolean.TRUE; |
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} |
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}); |
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Thread t = new Thread(new Runnable(){ |
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public void run(){ |
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try{ |
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ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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} catch(TimeoutException success) { |
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} catch(Exception e){ |
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threadFail("unexpected exception"); |
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} |
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} |
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}); |
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try{ |
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assertFalse(ft.isDone()); |
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assertFalse(ft.isCancelled()); |
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t.start(); |
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ft.run(); |
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t.join(); |
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assertTrue(ft.isDone()); |
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assertFalse(ft.isCancelled()); |
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} catch(InterruptedException e){ |
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fail("unexpected exception"); |
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|
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} |
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} |
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|
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|
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public void testGet_Cancellation(){ |
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final FutureTask ft = new FutureTask(new Callable(){ |
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public Object call(){ |
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try{ |
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Thread.sleep(MEDIUM_DELAY_MS); |
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} catch(InterruptedException e){ |
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threadFail("unexpected exception"); |
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} |
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return Boolean.TRUE; |
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} |
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}); |
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try { |
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Thread.sleep(SHORT_DELAY_MS); |
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Thread t = new Thread(new Runnable(){ |
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public void run(){ |
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try{ |
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ft.get(); |
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threadFail("should throw"); |
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} catch(CancellationException success){ |
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} |
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catch(Exception e){ |
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threadFail("unexpected exception"); |
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} |
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} |
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}); |
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t.start(); |
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ft.cancel(true); |
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t.join(); |
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} catch(InterruptedException success){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testGet_Cancellation2(){ |
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final FutureTask ft = new FutureTask(new Callable(){ |
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public Object call(){ |
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try{ |
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Thread.sleep(SHORT_DELAY_MS); |
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} catch(InterruptedException e) { |
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threadFail("unexpected exception"); |
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} |
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return Boolean.TRUE; |
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} |
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}); |
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try{ |
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Thread.sleep(SHORT_DELAY_MS); |
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Thread t = new Thread(new Runnable(){ |
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public void run(){ |
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try{ |
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ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
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threadFail("should throw"); |
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} catch(CancellationException success) {} |
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catch(Exception e){ |
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threadFail("unexpected exception"); |
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} |
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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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ft.cancel(true); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.join(); |
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} catch(InterruptedException ie){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testGet_ExecutionException(){ |
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final FutureTask ft = new FutureTask(new Callable(){ |
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public Object call(){ |
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int i = 5/0; |
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return Boolean.TRUE; |
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} |
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}); |
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try{ |
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ft.run(); |
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ft.get(); |
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fail("should throw"); |
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} catch(ExecutionException success){ |
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} |
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catch(Exception e){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testTimedGet_ExecutionException2(){ |
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final FutureTask ft = new FutureTask(new Callable(){ |
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public Object call(){ |
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int i = 5/0; |
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return Boolean.TRUE; |
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} |
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}); |
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try{ |
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ft.run(); |
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ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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fail("should throw"); |
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} catch(ExecutionException success) { |
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} catch(TimeoutException success) { } // unlikely but OK |
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catch(Exception e){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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|
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public void testGet_InterruptedException(){ |
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final FutureTask ft = new FutureTask(new NoOpCallable()); |
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Thread t = new Thread(new Runnable(){ |
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public void run(){ |
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try{ |
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ft.get(); |
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threadFail("should throw"); |
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} catch(InterruptedException success){ |
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} catch(Exception e){ |
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threadFail("unexpected exception"); |
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} |
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} |
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}); |
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try { |
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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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} catch(Exception e){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testTimedGet_InterruptedException2(){ |
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final FutureTask ft = new FutureTask(new NoOpCallable()); |
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Thread t = new Thread(new Runnable(){ |
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public void run(){ |
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try{ |
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ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS); |
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threadFail("should throw"); |
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} catch(InterruptedException success){} |
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catch(Exception e){ |
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threadFail("unexpected exception"); |
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} |
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} |
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}); |
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try { |
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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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} catch(Exception e){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testGet_TimeoutException(){ |
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try{ |
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FutureTask ft = new FutureTask(new NoOpCallable()); |
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ft.get(1,TimeUnit.MILLISECONDS); |
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fail("should throw"); |
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} catch(TimeoutException success){} |
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catch(Exception success){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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} |
