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root/jsr166/jsr166/src/test/tck/FutureTaskTest.java

Comparing jsr166/src/test/tck/FutureTaskTest.java (file contents):
Revision 1.14 by jsr166, Mon Nov 16 05:30:07 2009 UTC vs.
Revision 1.26 by jsr166, Tue May 31 16:16:23 2011 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10	<	import java.util.concurrent.*;
10	>	import java.util.concurrent.Callable;
11	>	import java.util.concurrent.CancellationException;
12	>	import java.util.concurrent.CountDownLatch;
13	>	import java.util.concurrent.ExecutionException;
14	>	import java.util.concurrent.Future;
15	>	import java.util.concurrent.FutureTask;
16	>	import java.util.concurrent.TimeoutException;
17	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
18	>	import static java.util.concurrent.TimeUnit.SECONDS;
19		import java.util.*;
20
21		public class FutureTaskTest extends JSR166TestCase {
22
23		public static void main(String[] args) {
24	<	junit.textui.TestRunner.run (suite());
24	>	junit.textui.TestRunner.run(suite());
25		}
26		public static Test suite() {
27	<	return new TestSuite(FutureTaskTest.class);
27	>	return new TestSuite(FutureTaskTest.class);
28	>	}
29	>
30	>	void checkNotDone(Future<?> f) {
31	>	assertFalse(f.isDone());
32	>	assertFalse(f.isCancelled());
33	>	}
34	>
35	>	<T> void checkCompletedNormally(Future<T> f, T expected) {
36	>	assertTrue(f.isDone());
37	>	assertFalse(f.isCancelled());
38	>
39	>	try {
40	>	assertSame(expected, f.get());
41	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
42	>	try {
43	>	assertSame(expected, f.get(5L, SECONDS));
44	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
45	>
46	>	assertFalse(f.cancel(false));
47	>	assertFalse(f.cancel(true));
48	>	}
49	>
50	>	void checkCancelled(Future<?> f) {
51	>	assertTrue(f.isDone());
52	>	assertTrue(f.isCancelled());
53	>
54	>	try {
55	>	f.get();
56	>	shouldThrow();
57	>	} catch (CancellationException success) {
58	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
59	>
60	>	try {
61	>	f.get(5L, SECONDS);
62	>	shouldThrow();
63	>	} catch (CancellationException success) {
64	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
65	>
66	>	assertFalse(f.cancel(false));
67	>	assertFalse(f.cancel(true));
68	>	}
69	>
70	>	void checkCompletedAbnormally(Future<?> f, Throwable t) {
71	>	assertTrue(f.isDone());
72	>	assertFalse(f.isCancelled());
73	>
74	>	try {
75	>	f.get();
76	>	shouldThrow();
77	>	} catch (ExecutionException success) {
78	>	assertSame(t, success.getCause());
79	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
80	>
81	>	try {
82	>	f.get(5L, SECONDS);
83	>	shouldThrow();
84	>	} catch (ExecutionException success) {
85	>	assertSame(t, success.getCause());
86	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
87	>
88	>	assertFalse(f.cancel(false));
89	>	assertFalse(f.cancel(true));
90		}
91
92		/**
#	Line 36 | Line 106 | public class FutureTaskTest extends JSR1
106		try {
107		FutureTask task = new FutureTask(null);
108		shouldThrow();
109	<	}
40	<	catch (NullPointerException success) {
41	<	}
109	>	} catch (NullPointerException success) {}
110		}
111
112		/**
#	Line 48 | Line 116 | public class FutureTaskTest extends JSR1
116		try {
117		FutureTask task = new FutureTask(null, Boolean.TRUE);
118		shouldThrow();
119	<	}
52	<	catch (NullPointerException success) {
53	<	}
119	>	} catch (NullPointerException success) {}
120		}
121
122		/**
123		* isDone is true when a task completes
124		*/
125		public void testIsDone() {
126	<	FutureTask task = new FutureTask( new NoOpCallable());
127	<	task.run();
128	<	assertTrue(task.isDone());
129	<	assertFalse(task.isCancelled());
126	>	FutureTask task = new FutureTask(new NoOpCallable());
127	>	task.run();
128	>	assertTrue(task.isDone());
129	>	checkCompletedNormally(task, Boolean.TRUE);
130		}
131
132		/**
#	Line 68 | Line 134 | public class FutureTaskTest extends JSR1
134		*/
135		public void testRunAndReset() {
136		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
137	<	assertTrue(task.runAndReset());
138	<	assertFalse(task.isDone());
137	>	assertTrue(task.runAndReset());
138	>	checkNotDone(task);
139		}
140
141		/**
#	Line 78 | Line 144 | public class FutureTaskTest extends JSR1
144		public void testResetAfterCancel() {
145		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
146		assertTrue(task.cancel(false));
147	<	assertFalse(task.runAndReset());
148	<	assertTrue(task.isDone());
83	<	assertTrue(task.isCancelled());
147	>	assertFalse(task.runAndReset());
148	>	checkCancelled(task);
149		}
150
151
87	–
152		/**
153		* setting value causes get to return it
154		*/
155	<	public void testSet() {
155	>	public void testSet() throws Exception {
156		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
157		task.set(one);
158	<	try {
159	<	assertEquals(task.get(), one);
96	<	}
97	<	catch (Exception e) {
98	<	unexpectedException();
99	<	}
158	>	assertSame(task.get(), one);
159	>	checkCompletedNormally(task, one);
160		}
161
162		/**
163		* setException causes get to throw ExecutionException
164		*/
165	<	public void testSetException() {
165	>	public void testSetException() throws Exception {
166		Exception nse = new NoSuchElementException();
167		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
168		task.setException(nse);
169		try {
170		Object x = task.get();
171		shouldThrow();
172	<	}
173	<	catch (ExecutionException ee) {
174	<	Throwable cause = ee.getCause();
115	<	assertEquals(cause, nse);
116	<	}
117	<	catch (Exception e) {
118	<	unexpectedException();
172	>	} catch (ExecutionException success) {
173	>	assertSame(success.getCause(), nse);
174	>	checkCompletedAbnormally(task, nse);
175		}
176		}
177
178		/**
179	<	*  Cancelling before running succeeds
179	>	* Cancelling before running succeeds
180		*/
181		public void testCancelBeforeRun() {
182	<	FutureTask task = new FutureTask( new NoOpCallable());
182	>	FutureTask task = new FutureTask(new NoOpCallable());
183		assertTrue(task.cancel(false));
184	<	task.run();
185	<	assertTrue(task.isDone());
130	<	assertTrue(task.isCancelled());
184	>	task.run();
185	>	checkCancelled(task);
186		}
187
188		/**
189		* Cancel(true) before run succeeds
190		*/
191		public void testCancelBeforeRun2() {
192	<	FutureTask task = new FutureTask( new NoOpCallable());
192	>	FutureTask task = new FutureTask(new NoOpCallable());
193		assertTrue(task.cancel(true));
194	<	task.run();
195	<	assertTrue(task.isDone());
141	<	assertTrue(task.isCancelled());
194	>	task.run();
195	>	checkCancelled(task);
196		}
197
198		/**
199		* cancel of a completed task fails
200		*/
201		public void testCancelAfterRun() {
202	<	FutureTask task = new FutureTask( new NoOpCallable());
203	<	task.run();
202	>	FutureTask task = new FutureTask(new NoOpCallable());
203	>	task.run();
204		assertFalse(task.cancel(false));
205	<	assertTrue(task.isDone());
152	<	assertFalse(task.isCancelled());
205	>	checkCompletedNormally(task, Boolean.TRUE);
206		}
207
208		/**
209		* cancel(true) interrupts a running task
210		*/
211	<	public void testCancelInterrupt() {
212	<	FutureTask task = new FutureTask( new Callable() {
213	<	public Object call() {
214	<	try {
215	<	Thread.sleep(MEDIUM_DELAY_MS);
216	<	threadShouldThrow();
211	>	public void testCancelInterrupt() throws InterruptedException {
212	>	final CountDownLatch threadStarted = new CountDownLatch(1);
213	>	final FutureTask task =
214	>	new FutureTask(new CheckedCallable<Object>() {
215	>	public Object realCall() {
216	>	threadStarted.countDown();
217	>	long t0 = System.nanoTime();
218	>	for (;;) {
219	>	if (Thread.interrupted())
220	>	return Boolean.TRUE;
221	>	if (millisElapsedSince(t0) > MEDIUM_DELAY_MS)
222	>	fail("interrupt not delivered");
223	>	Thread.yield();
224		}
225	<	catch (InterruptedException success) {}
166	<	return Boolean.TRUE;
167	<	} });
168	<	Thread t = new  Thread(task);
169	<	t.start();
225	>	}});
226
227	<	try {
228	<	Thread.sleep(SHORT_DELAY_MS);
229	<	assertTrue(task.cancel(true));
230	<	t.join();
231	<	assertTrue(task.isDone());
232	<	assertTrue(task.isCancelled());
177	<	} catch (InterruptedException e) {
178	<	unexpectedException();
179	<	}
227	>	Thread t = newStartedThread(task);
228	>	threadStarted.await();
229	>	assertTrue(task.cancel(true));
230	>	checkCancelled(task);
231	>	awaitTermination(t, MEDIUM_DELAY_MS);
232	>	checkCancelled(task);
233		}
234
182	–
235		/**
236		* cancel(false) does not interrupt a running task
237		*/
238	<	public void testCancelNoInterrupt() {
239	<	FutureTask task = new FutureTask( new Callable() {
240	<	public Object call() {
241	<	try {
242	<	Thread.sleep(MEDIUM_DELAY_MS);
243	<	}
244	<	catch (InterruptedException success) {
245	<	threadFail("should not interrupt");
246	<	}
238	>	public void testCancelNoInterrupt() throws InterruptedException {
239	>	final CountDownLatch threadStarted = new CountDownLatch(1);
240	>	final CountDownLatch cancelled = new CountDownLatch(1);
241	>	final FutureTask<Boolean> task =
242	>	new FutureTask<Boolean>(new CheckedCallable<Boolean>() {
243	>	public Boolean realCall() throws InterruptedException {
244	>	threadStarted.countDown();
245	>	cancelled.await(MEDIUM_DELAY_MS, MILLISECONDS);
246	>	assertFalse(Thread.interrupted());
247		return Boolean.TRUE;
248	<	} });
197	<	Thread t = new  Thread(task);
198	<	t.start();
248	>	}});
249
250	<	try {
251	<	Thread.sleep(SHORT_DELAY_MS);
252	<	assertTrue(task.cancel(false));
253	<	t.join();
254	<	assertTrue(task.isDone());
255	<	assertTrue(task.isCancelled());
256	<	} catch (InterruptedException e) {
207	<	unexpectedException();
208	<	}
250	>	Thread t = newStartedThread(task);
251	>	threadStarted.await();
252	>	assertTrue(task.cancel(false));
253	>	checkCancelled(task);
254	>	cancelled.countDown();
255	>	awaitTermination(t, MEDIUM_DELAY_MS);
256	>	checkCancelled(task);
257		}
258
259		/**
260	<	* set in one thread causes get in another thread to retrieve value
260	>	* run in one thread causes get in another thread to retrieve value
261		*/
262	<	public void testGet1() {
263	<	final FutureTask ft = new FutureTask(new Callable() {
264	<	public Object call() {
265	<	try {
266	<	Thread.sleep(MEDIUM_DELAY_MS);
267	<	} catch (InterruptedException e) {
220	<	threadUnexpectedException();
221	<	}
262	>	public void testGetRun() throws InterruptedException {
263	>	final CountDownLatch threadStarted = new CountDownLatch(1);
264	>
265	>	final FutureTask task =
266	>	new FutureTask(new CheckedCallable<Object>() {
267	>	public Object realCall() throws InterruptedException {
268		return Boolean.TRUE;
269	<	}
224	<	});
225	<	Thread t = new Thread(new Runnable() {
226	<	public void run() {
227	<	try {
228	<	ft.get();
229	<	} catch (Exception e) {
230	<	threadUnexpectedException();
231	<	}
232	<	}
233	<	});
234	<	try {
235	<	assertFalse(ft.isDone());
236	<	assertFalse(ft.isCancelled());
237	<	t.start();
238	<	Thread.sleep(SHORT_DELAY_MS);
239	<	ft.run();
240	<	t.join();
241	<	assertTrue(ft.isDone());
242	<	assertFalse(ft.isCancelled());
243	<	} catch (InterruptedException e) {
244	<	unexpectedException();
269	>	}});
270
271	<	}
271	>	Thread t = newStartedThread(new CheckedRunnable() {
272	>	public void realRun() throws Exception {
273	>	threadStarted.countDown();
274	>	assertSame(Boolean.TRUE, task.get());
275	>	}});
276	>
277	>	threadStarted.await();
278	>	checkNotDone(task);
279	>	assertTrue(t.isAlive());
280	>	task.run();
281	>	checkCompletedNormally(task, Boolean.TRUE);
282	>	awaitTermination(t, MEDIUM_DELAY_MS);
283		}
284
285		/**
286	<	* set in one thread causes timed get in another thread to retrieve value
286	>	* set in one thread causes get in another thread to retrieve value
287		*/
288	<	public void testTimedGet1() {
289	<	final FutureTask ft = new FutureTask(new Callable() {
290	<	public Object call() {
291	<	try {
292	<	Thread.sleep(MEDIUM_DELAY_MS);
293	<	} catch (InterruptedException e) {
258	<	threadUnexpectedException();
259	<	}
288	>	public void testGetSet() throws InterruptedException {
289	>	final CountDownLatch threadStarted = new CountDownLatch(1);
290	>
291	>	final PublicFutureTask task =
292	>	new PublicFutureTask(new CheckedCallable<Object>() {
293	>	public Object realCall() throws InterruptedException {
294		return Boolean.TRUE;
295	<	}
262	<	});
263	<	Thread t = new Thread(new Runnable() {
264	<	public void run() {
265	<	try {
266	<	ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
267	<	} catch (TimeoutException success) {
268	<	} catch (Exception e) {
269	<	threadUnexpectedException();
270	<	}
271	<	}
272	<	});
273	<	try {
274	<	assertFalse(ft.isDone());
275	<	assertFalse(ft.isCancelled());
276	<	t.start();
277	<	ft.run();
278	<	t.join();
279	<	assertTrue(ft.isDone());
280	<	assertFalse(ft.isCancelled());
281	<	} catch (InterruptedException e) {
282	<	unexpectedException();
295	>	}});
296
297	<	}
297	>	Thread t = newStartedThread(new CheckedRunnable() {
298	>	public void realRun() throws Exception {
299	>	threadStarted.countDown();
300	>	assertSame(Boolean.FALSE, task.get());
301	>	}});
302	>
303	>	threadStarted.await();
304	>	checkNotDone(task);
305	>	assertTrue(t.isAlive());
306	>	task.set(Boolean.FALSE);
307	>	checkCompletedNormally(task, Boolean.FALSE);
308	>	awaitTermination(t, MEDIUM_DELAY_MS);
309		}
310
311		/**
312	<	*  Cancelling a task causes timed get in another thread to throw CancellationException
312	>	* run in one thread causes timed get in another thread to retrieve value
313		*/
314	<	public void testTimedGet_Cancellation() {
315	<	final FutureTask ft = new FutureTask(new Callable() {
316	<	public Object call() {
317	<	try {
318	<	Thread.sleep(SMALL_DELAY_MS);
319	<	threadShouldThrow();
320	<	} catch (InterruptedException e) {
321	<	}
322	<	return Boolean.TRUE;
323	<	}
324	<	});
325	<	try {
326	<	Thread t1 = new Thread(new Runnable() {
327	<	public void run() {
328	<	try {
329	<	ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
330	<	threadShouldThrow();
331	<	} catch (CancellationException success) {}
332	<	catch (Exception e) {
333	<	threadUnexpectedException();
334	<	}
335	<	}
312	<	});
313	<	Thread t2 = new Thread(ft);
314	<	t1.start();
315	<	t2.start();
316	<	Thread.sleep(SHORT_DELAY_MS);
317	<	ft.cancel(true);
318	<	t1.join();
319	<	t2.join();
320	<	} catch (InterruptedException ie) {
321	<	unexpectedException();
322	<	}
314	>	public void testTimedGetRun() throws InterruptedException {
315	>	final CountDownLatch threadStarted = new CountDownLatch(1);
316	>
317	>	final FutureTask task =
318	>	new FutureTask(new CheckedCallable<Object>() {
319	>	public Object realCall() throws InterruptedException {
320	>	return Boolean.TRUE;
321	>	}});
322	>
323	>	Thread t = newStartedThread(new CheckedRunnable() {
324	>	public void realRun() throws Exception {
325	>	threadStarted.countDown();
326	>	assertSame(Boolean.TRUE,
327	>	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
328	>	}});
329	>
330	>	threadStarted.await();
331	>	checkNotDone(task);
332	>	assertTrue(t.isAlive());
333	>	task.run();
334	>	checkCompletedNormally(task, Boolean.TRUE);
335	>	awaitTermination(t, MEDIUM_DELAY_MS);
336		}
337
338		/**
339	<	* Cancelling a task causes get in another thread to throw CancellationException
339	>	* set in one thread causes timed get in another thread to retrieve value
340		*/
341	<	public void testGet_Cancellation() {
342	<	final FutureTask ft = new FutureTask(new Callable() {
343	<	public Object call() {
344	<	try {
345	<	Thread.sleep(MEDIUM_DELAY_MS);
346	<	threadShouldThrow();
334	<	} catch (InterruptedException e) {
335	<	}
341	>	public void testTimedGetSet() throws InterruptedException {
342	>	final CountDownLatch threadStarted = new CountDownLatch(1);
343	>
344	>	final PublicFutureTask task =
345	>	new PublicFutureTask(new CheckedCallable<Object>() {
346	>	public Object realCall() throws InterruptedException {
347		return Boolean.TRUE;
348	<	}
349	<	});
350	<	try {
351	<	Thread t1 = new Thread(new Runnable() {
352	<	public void run() {
353	<	try {
354	<	ft.get();
355	<	threadShouldThrow();
356	<	} catch (CancellationException success) {
357	<	}
358	<	catch (Exception e) {
359	<	threadUnexpectedException();
360	<	}
361	<	}
362	<	});
363	<	Thread t2 = new Thread(ft);
364	<	t1.start();
365	<	t2.start();
366	<	Thread.sleep(SHORT_DELAY_MS);
367	<	ft.cancel(true);
368	<	t1.join();
369	<	t2.join();
370	<	} catch (InterruptedException success) {
371	<	unexpectedException();
372	<	}
348	>	}});
349	>
350	>	Thread t = newStartedThread(new CheckedRunnable() {
351	>	public void realRun() throws Exception {
352	>	threadStarted.countDown();
353	>	assertSame(Boolean.FALSE,
354	>	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
355	>	}});
356	>
357	>	threadStarted.await();
358	>	checkNotDone(task);
359	>	assertTrue(t.isAlive());
360	>	task.set(Boolean.FALSE);
361	>	checkCompletedNormally(task, Boolean.FALSE);
362	>	awaitTermination(t, MEDIUM_DELAY_MS);
363	>	}
364	>
365	>	/**
366	>	* Cancelling a task causes timed get in another thread to throw
367	>	* CancellationException
368	>	*/
369	>	public void testTimedGet_Cancellation() throws InterruptedException {
370	>	final CountDownLatch threadStarted = new CountDownLatch(2);
371	>	final FutureTask task =
372	>	new FutureTask(new CheckedInterruptedCallable<Object>() {
373	>	public Object realCall() throws InterruptedException {
374	>	threadStarted.countDown();
375	>	delay(LONG_DELAY_MS);
376	>	return Boolean.TRUE;
377	>	}});
378	>
379	>	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
380	>	public void realRun() throws Exception {
381	>	threadStarted.countDown();
382	>	task.get(MEDIUM_DELAY_MS, MILLISECONDS);
383	>	}};
384	>	Thread t2 = new Thread(task);
385	>	t1.start();
386	>	t2.start();
387	>	threadStarted.await();
388	>	task.cancel(true);
389	>	awaitTermination(t1, MEDIUM_DELAY_MS);
390	>	awaitTermination(t2, MEDIUM_DELAY_MS);
391	>	checkCancelled(task);
392	>	}
393	>
394	>	/**
395	>	* Cancelling a task causes get in another thread to throw
396	>	* CancellationException
397	>	*/
398	>	public void testGet_Cancellation() throws InterruptedException {
399	>	final CountDownLatch threadStarted = new CountDownLatch(2);
400	>	final FutureTask task =
401	>	new FutureTask(new CheckedInterruptedCallable<Object>() {
402	>	public Object realCall() throws InterruptedException {
403	>	threadStarted.countDown();
404	>	delay(LONG_DELAY_MS);
405	>	return Boolean.TRUE;
406	>	}});
407	>
408	>	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
409	>	public void realRun() throws Exception {
410	>	threadStarted.countDown();
411	>	task.get();
412	>	}};
413	>	Thread t2 = new Thread(task);
414	>	t1.start();
415	>	t2.start();
416	>	threadStarted.await();
417	>	task.cancel(true);
418	>	awaitTermination(t1, MEDIUM_DELAY_MS);
419	>	awaitTermination(t2, MEDIUM_DELAY_MS);
420	>	checkCancelled(task);
421		}
422
423
424		/**
425		* A runtime exception in task causes get to throw ExecutionException
426		*/
427	<	public void testGet_ExecutionException() {
428	<	final FutureTask ft = new FutureTask(new Callable() {
429	<	public Object call() {
430	<	int i = 5/0;
431	<	return Boolean.TRUE;
432	<	}
433	<	});
434	<	try {
435	<	ft.run();
436	<	ft.get();
437	<	shouldThrow();
438	<	} catch (ExecutionException success) {
427	>	public void testGet_ExecutionException() throws InterruptedException {
428	>	final FutureTask task = new FutureTask(new Callable() {
429	>	public Object call() {
430	>	return 5/0;
431	>	}});
432	>
433	>	task.run();
434	>	try {
435	>	task.get();
436	>	shouldThrow();
437	>	} catch (ExecutionException success) {
438	>	assertTrue(success.getCause() instanceof ArithmeticException);
439	>	checkCompletedAbnormally(task, success.getCause());
440		}
381	–	catch (Exception e) {
382	–	unexpectedException();
383	–	}
441		}
442
443		/**
444	<	*  A runtime exception in task causes timed get to throw ExecutionException
445	<	*/
446	<	public void testTimedGet_ExecutionException2() {
447	<	final FutureTask ft = new FutureTask(new Callable() {
448	<	public Object call() {
449	<	int i = 5/0;
450	<	return Boolean.TRUE;
451	<	}
452	<	});
453	<	try {
454	<	ft.run();
455	<	ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
456	<	shouldThrow();
457	<	} catch (ExecutionException success) {
458	<	} catch (TimeoutException success) { } // unlikely but OK
459	<	catch (Exception e) {
403	<	unexpectedException();
404	<	}
444	>	* A runtime exception in task causes timed get to throw ExecutionException
445	>	*/
446	>	public void testTimedGet_ExecutionException2() throws Exception {
447	>	final FutureTask task = new FutureTask(new Callable() {
448	>	public Object call() {
449	>	return 5/0;
450	>	}});
451	>
452	>	task.run();
453	>	try {
454	>	task.get(SHORT_DELAY_MS, MILLISECONDS);
455	>	shouldThrow();
456	>	} catch (ExecutionException success) {
457	>	assertTrue(success.getCause() instanceof ArithmeticException);
458	>	checkCompletedAbnormally(task, success.getCause());
459	>	}
460		}
461
462
463		/**
464		* Interrupting a waiting get causes it to throw InterruptedException
465		*/
466	<	public void testGet_InterruptedException() {
467	<	final FutureTask ft = new FutureTask(new NoOpCallable());
468	<	Thread t = new Thread(new Runnable() {
469	<	public void run() {
470	<	try {
471	<	ft.get();
472	<	threadShouldThrow();
473	<	} catch (InterruptedException success) {
474	<	} catch (Exception e) {
475	<	threadUnexpectedException();
476	<	}
477	<	}
478	<	});
424	<	try {
425	<	t.start();
426	<	Thread.sleep(SHORT_DELAY_MS);
427	<	t.interrupt();
428	<	t.join();
429	<	} catch (Exception e) {
430	<	unexpectedException();
431	<	}
466	>	public void testGet_InterruptedException() throws InterruptedException {
467	>	final CountDownLatch threadStarted = new CountDownLatch(1);
468	>	final FutureTask task = new FutureTask(new NoOpCallable());
469	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
470	>	public void realRun() throws Exception {
471	>	threadStarted.countDown();
472	>	task.get();
473	>	}});
474	>
475	>	threadStarted.await();
476	>	t.interrupt();
477	>	awaitTermination(t, MEDIUM_DELAY_MS);
478	>	checkNotDone(task);
479		}
480
481		/**
482	<	*  Interrupting a waiting timed get causes it to throw InterruptedException
483	<	*/
484	<	public void testTimedGet_InterruptedException2() {
485	<	final FutureTask ft = new FutureTask(new NoOpCallable());
486	<	Thread t = new Thread(new Runnable() {
487	<	public void run() {
488	<	try {
489	<	ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS);
490	<	threadShouldThrow();
491	<	} catch (InterruptedException success) {}
492	<	catch (Exception e) {
493	<	threadUnexpectedException();
494	<	}
495	<	}
496	<	});
450	<	try {
451	<	t.start();
452	<	Thread.sleep(SHORT_DELAY_MS);
453	<	t.interrupt();
454	<	t.join();
455	<	} catch (Exception e) {
456	<	unexpectedException();
457	<	}
482	>	* Interrupting a waiting timed get causes it to throw InterruptedException
483	>	*/
484	>	public void testTimedGet_InterruptedException2() throws InterruptedException {
485	>	final CountDownLatch threadStarted = new CountDownLatch(1);
486	>	final FutureTask task = new FutureTask(new NoOpCallable());
487	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
488	>	public void realRun() throws Exception {
489	>	threadStarted.countDown();
490	>	task.get(LONG_DELAY_MS, MILLISECONDS);
491	>	}});
492	>
493	>	threadStarted.await();
494	>	t.interrupt();
495	>	awaitTermination(t, MEDIUM_DELAY_MS);
496	>	checkNotDone(task);
497		}
498
499		/**
500		* A timed out timed get throws TimeoutException
501		*/
502	<	public void testGet_TimeoutException() {
503	<	try {
504	<	FutureTask ft = new FutureTask(new NoOpCallable());
505	<	ft.get(1,TimeUnit.MILLISECONDS);
506	<	shouldThrow();
507	<	} catch (TimeoutException success) {}
469	<	catch (Exception success) {
470	<	unexpectedException();
471	<	}
502	>	public void testGet_TimeoutException() throws Exception {
503	>	try {
504	>	FutureTask task = new FutureTask(new NoOpCallable());
505	>	task.get(1, MILLISECONDS);
506	>	shouldThrow();
507	>	} catch (TimeoutException success) {}
508		}
509
510		}

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