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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 1.27 by jsr166, Sat Jun 18 14:16:42 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
86	–
87	–
151		/**
152		* setting value causes get to return it
153		*/
154	<	public void testSet() {
154	>	public void testSet() throws Exception {
155		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
156		task.set(one);
157	<	try {
158	<	assertEquals(task.get(), one);
96	<	}
97	<	catch (Exception e) {
98	<	unexpectedException();
99	<	}
157	>	assertSame(task.get(), one);
158	>	checkCompletedNormally(task, one);
159		}
160
161		/**
162		* setException causes get to throw ExecutionException
163		*/
164	<	public void testSetException() {
164	>	public void testSetException() throws Exception {
165		Exception nse = new NoSuchElementException();
166		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
167		task.setException(nse);
168		try {
169		Object x = task.get();
170		shouldThrow();
171	<	}
172	<	catch (ExecutionException ee) {
173	<	Throwable cause = ee.getCause();
115	<	assertEquals(cause, nse);
116	<	}
117	<	catch (Exception e) {
118	<	unexpectedException();
171	>	} catch (ExecutionException success) {
172	>	assertSame(success.getCause(), nse);
173	>	checkCompletedAbnormally(task, nse);
174		}
175		}
176
177		/**
178	<	*  Cancelling before running succeeds
178	>	* Cancelling before running succeeds
179		*/
180		public void testCancelBeforeRun() {
181	<	FutureTask task = new FutureTask( new NoOpCallable());
181	>	FutureTask task = new FutureTask(new NoOpCallable());
182		assertTrue(task.cancel(false));
183	<	task.run();
184	<	assertTrue(task.isDone());
130	<	assertTrue(task.isCancelled());
183	>	task.run();
184	>	checkCancelled(task);
185		}
186
187		/**
188		* Cancel(true) before run succeeds
189		*/
190		public void testCancelBeforeRun2() {
191	<	FutureTask task = new FutureTask( new NoOpCallable());
191	>	FutureTask task = new FutureTask(new NoOpCallable());
192		assertTrue(task.cancel(true));
193	<	task.run();
194	<	assertTrue(task.isDone());
141	<	assertTrue(task.isCancelled());
193	>	task.run();
194	>	checkCancelled(task);
195		}
196
197		/**
198		* cancel of a completed task fails
199		*/
200		public void testCancelAfterRun() {
201	<	FutureTask task = new FutureTask( new NoOpCallable());
202	<	task.run();
201	>	FutureTask task = new FutureTask(new NoOpCallable());
202	>	task.run();
203		assertFalse(task.cancel(false));
204	<	assertTrue(task.isDone());
152	<	assertFalse(task.isCancelled());
204	>	checkCompletedNormally(task, Boolean.TRUE);
205		}
206
207		/**
208		* cancel(true) interrupts a running task
209		*/
210	<	public void testCancelInterrupt() {
211	<	FutureTask task = new FutureTask( new Callable() {
212	<	public Object call() {
213	<	try {
214	<	Thread.sleep(MEDIUM_DELAY_MS);
215	<	threadShouldThrow();
210	>	public void testCancelInterrupt() throws InterruptedException {
211	>	final CountDownLatch threadStarted = new CountDownLatch(1);
212	>	final FutureTask task =
213	>	new FutureTask(new CheckedCallable<Object>() {
214	>	public Object realCall() {
215	>	threadStarted.countDown();
216	>	long t0 = System.nanoTime();
217	>	for (;;) {
218	>	if (Thread.interrupted())
219	>	return Boolean.TRUE;
220	>	if (millisElapsedSince(t0) > MEDIUM_DELAY_MS)
221	>	fail("interrupt not delivered");
222	>	Thread.yield();
223		}
224	<	catch (InterruptedException success) {}
166	<	return Boolean.TRUE;
167	<	} });
168	<	Thread t = new  Thread(task);
169	<	t.start();
224	>	}});
225
226	<	try {
227	<	Thread.sleep(SHORT_DELAY_MS);
228	<	assertTrue(task.cancel(true));
229	<	t.join();
230	<	assertTrue(task.isDone());
231	<	assertTrue(task.isCancelled());
177	<	} catch (InterruptedException e) {
178	<	unexpectedException();
179	<	}
226	>	Thread t = newStartedThread(task);
227	>	threadStarted.await();
228	>	assertTrue(task.cancel(true));
229	>	checkCancelled(task);
230	>	awaitTermination(t, MEDIUM_DELAY_MS);
231	>	checkCancelled(task);
232		}
233
182	–
234		/**
235		* cancel(false) does not interrupt a running task
236		*/
237	<	public void testCancelNoInterrupt() {
238	<	FutureTask task = new FutureTask( new Callable() {
239	<	public Object call() {
240	<	try {
241	<	Thread.sleep(MEDIUM_DELAY_MS);
242	<	}
243	<	catch (InterruptedException success) {
244	<	threadFail("should not interrupt");
245	<	}
237	>	public void testCancelNoInterrupt() throws InterruptedException {
238	>	final CountDownLatch threadStarted = new CountDownLatch(1);
239	>	final CountDownLatch cancelled = new CountDownLatch(1);
240	>	final FutureTask<Boolean> task =
241	>	new FutureTask<Boolean>(new CheckedCallable<Boolean>() {
242	>	public Boolean realCall() throws InterruptedException {
243	>	threadStarted.countDown();
244	>	cancelled.await(MEDIUM_DELAY_MS, MILLISECONDS);
245	>	assertFalse(Thread.interrupted());
246		return Boolean.TRUE;
247	<	} });
197	<	Thread t = new  Thread(task);
198	<	t.start();
247	>	}});
248
249	<	try {
250	<	Thread.sleep(SHORT_DELAY_MS);
251	<	assertTrue(task.cancel(false));
252	<	t.join();
253	<	assertTrue(task.isDone());
254	<	assertTrue(task.isCancelled());
255	<	} catch (InterruptedException e) {
207	<	unexpectedException();
208	<	}
249	>	Thread t = newStartedThread(task);
250	>	threadStarted.await();
251	>	assertTrue(task.cancel(false));
252	>	checkCancelled(task);
253	>	cancelled.countDown();
254	>	awaitTermination(t, MEDIUM_DELAY_MS);
255	>	checkCancelled(task);
256		}
257
258		/**
259	<	* set in one thread causes get in another thread to retrieve value
259	>	* run in one thread causes get in another thread to retrieve value
260		*/
261	<	public void testGet1() {
262	<	final FutureTask ft = new FutureTask(new Callable() {
263	<	public Object call() {
264	<	try {
265	<	Thread.sleep(MEDIUM_DELAY_MS);
266	<	} catch (InterruptedException e) {
220	<	threadUnexpectedException();
221	<	}
261	>	public void testGetRun() throws InterruptedException {
262	>	final CountDownLatch threadStarted = new CountDownLatch(1);
263	>
264	>	final FutureTask task =
265	>	new FutureTask(new CheckedCallable<Object>() {
266	>	public Object realCall() throws InterruptedException {
267		return Boolean.TRUE;
268	<	}
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();
268	>	}});
269
270	<	}
270	>	Thread t = newStartedThread(new CheckedRunnable() {
271	>	public void realRun() throws Exception {
272	>	threadStarted.countDown();
273	>	assertSame(Boolean.TRUE, task.get());
274	>	}});
275	>
276	>	threadStarted.await();
277	>	checkNotDone(task);
278	>	assertTrue(t.isAlive());
279	>	task.run();
280	>	checkCompletedNormally(task, Boolean.TRUE);
281	>	awaitTermination(t, MEDIUM_DELAY_MS);
282		}
283
284		/**
285	<	* set in one thread causes timed get in another thread to retrieve value
285	>	* set in one thread causes get in another thread to retrieve value
286		*/
287	<	public void testTimedGet1() {
288	<	final FutureTask ft = new FutureTask(new Callable() {
289	<	public Object call() {
290	<	try {
291	<	Thread.sleep(MEDIUM_DELAY_MS);
292	<	} catch (InterruptedException e) {
258	<	threadUnexpectedException();
259	<	}
287	>	public void testGetSet() throws InterruptedException {
288	>	final CountDownLatch threadStarted = new CountDownLatch(1);
289	>
290	>	final PublicFutureTask task =
291	>	new PublicFutureTask(new CheckedCallable<Object>() {
292	>	public Object realCall() throws InterruptedException {
293		return Boolean.TRUE;
294	<	}
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();
294	>	}});
295
296	<	}
296	>	Thread t = newStartedThread(new CheckedRunnable() {
297	>	public void realRun() throws Exception {
298	>	threadStarted.countDown();
299	>	assertSame(Boolean.FALSE, task.get());
300	>	}});
301	>
302	>	threadStarted.await();
303	>	checkNotDone(task);
304	>	assertTrue(t.isAlive());
305	>	task.set(Boolean.FALSE);
306	>	checkCompletedNormally(task, Boolean.FALSE);
307	>	awaitTermination(t, MEDIUM_DELAY_MS);
308		}
309
310		/**
311	<	*  Cancelling a task causes timed get in another thread to throw CancellationException
311	>	* run in one thread causes timed get in another thread to retrieve value
312		*/
313	<	public void testTimedGet_Cancellation() {
314	<	final FutureTask ft = new FutureTask(new Callable() {
315	<	public Object call() {
316	<	try {
317	<	Thread.sleep(SMALL_DELAY_MS);
318	<	threadShouldThrow();
319	<	} catch (InterruptedException e) {
320	<	}
321	<	return Boolean.TRUE;
322	<	}
323	<	});
324	<	try {
325	<	Thread t1 = new Thread(new Runnable() {
326	<	public void run() {
327	<	try {
328	<	ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
329	<	threadShouldThrow();
330	<	} catch (CancellationException success) {}
331	<	catch (Exception e) {
332	<	threadUnexpectedException();
333	<	}
334	<	}
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	<	}
313	>	public void testTimedGetRun() throws InterruptedException {
314	>	final CountDownLatch threadStarted = new CountDownLatch(1);
315	>
316	>	final FutureTask task =
317	>	new FutureTask(new CheckedCallable<Object>() {
318	>	public Object realCall() throws InterruptedException {
319	>	return Boolean.TRUE;
320	>	}});
321	>
322	>	Thread t = newStartedThread(new CheckedRunnable() {
323	>	public void realRun() throws Exception {
324	>	threadStarted.countDown();
325	>	assertSame(Boolean.TRUE,
326	>	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
327	>	}});
328	>
329	>	threadStarted.await();
330	>	checkNotDone(task);
331	>	assertTrue(t.isAlive());
332	>	task.run();
333	>	checkCompletedNormally(task, Boolean.TRUE);
334	>	awaitTermination(t, MEDIUM_DELAY_MS);
335		}
336
337		/**
338	<	* Cancelling a task causes get in another thread to throw CancellationException
338	>	* set in one thread causes timed get in another thread to retrieve value
339		*/
340	<	public void testGet_Cancellation() {
341	<	final FutureTask ft = new FutureTask(new Callable() {
342	<	public Object call() {
343	<	try {
344	<	Thread.sleep(MEDIUM_DELAY_MS);
345	<	threadShouldThrow();
334	<	} catch (InterruptedException e) {
335	<	}
340	>	public void testTimedGetSet() throws InterruptedException {
341	>	final CountDownLatch threadStarted = new CountDownLatch(1);
342	>
343	>	final PublicFutureTask task =
344	>	new PublicFutureTask(new CheckedCallable<Object>() {
345	>	public Object realCall() throws InterruptedException {
346		return Boolean.TRUE;
347	<	}
348	<	});
349	<	try {
350	<	Thread t1 = new Thread(new Runnable() {
351	<	public void run() {
352	<	try {
353	<	ft.get();
354	<	threadShouldThrow();
355	<	} catch (CancellationException success) {
356	<	}
357	<	catch (Exception e) {
358	<	threadUnexpectedException();
359	<	}
360	<	}
361	<	});
352	<	Thread t2 = new Thread(ft);
353	<	t1.start();
354	<	t2.start();
355	<	Thread.sleep(SHORT_DELAY_MS);
356	<	ft.cancel(true);
357	<	t1.join();
358	<	t2.join();
359	<	} catch (InterruptedException success) {
360	<	unexpectedException();
361	<	}
347	>	}});
348	>
349	>	Thread t = newStartedThread(new CheckedRunnable() {
350	>	public void realRun() throws Exception {
351	>	threadStarted.countDown();
352	>	assertSame(Boolean.FALSE,
353	>	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
354	>	}});
355	>
356	>	threadStarted.await();
357	>	checkNotDone(task);
358	>	assertTrue(t.isAlive());
359	>	task.set(Boolean.FALSE);
360	>	checkCompletedNormally(task, Boolean.FALSE);
361	>	awaitTermination(t, MEDIUM_DELAY_MS);
362		}
363
364	+	/**
365	+	* Cancelling a task causes timed get in another thread to throw
366	+	* CancellationException
367	+	*/
368	+	public void testTimedGet_Cancellation() throws InterruptedException {
369	+	final CountDownLatch threadStarted = new CountDownLatch(2);
370	+	final FutureTask task =
371	+	new FutureTask(new CheckedInterruptedCallable<Object>() {
372	+	public Object realCall() throws InterruptedException {
373	+	threadStarted.countDown();
374	+	delay(LONG_DELAY_MS);
375	+	return Boolean.TRUE;
376	+	}});
377	+
378	+	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
379	+	public void realRun() throws Exception {
380	+	threadStarted.countDown();
381	+	task.get(MEDIUM_DELAY_MS, MILLISECONDS);
382	+	}};
383	+	Thread t2 = new Thread(task);
384	+	t1.start();
385	+	t2.start();
386	+	threadStarted.await();
387	+	task.cancel(true);
388	+	awaitTermination(t1, MEDIUM_DELAY_MS);
389	+	awaitTermination(t2, MEDIUM_DELAY_MS);
390	+	checkCancelled(task);
391	+	}
392	+
393	+	/**
394	+	* Cancelling a task causes get in another thread to throw
395	+	* CancellationException
396	+	*/
397	+	public void testGet_Cancellation() throws InterruptedException {
398	+	final CountDownLatch threadStarted = new CountDownLatch(2);
399	+	final FutureTask task =
400	+	new FutureTask(new CheckedInterruptedCallable<Object>() {
401	+	public Object realCall() throws InterruptedException {
402	+	threadStarted.countDown();
403	+	delay(LONG_DELAY_MS);
404	+	return Boolean.TRUE;
405	+	}});
406	+
407	+	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
408	+	public void realRun() throws Exception {
409	+	threadStarted.countDown();
410	+	task.get();
411	+	}};
412	+	Thread t2 = new Thread(task);
413	+	t1.start();
414	+	t2.start();
415	+	threadStarted.await();
416	+	task.cancel(true);
417	+	awaitTermination(t1, MEDIUM_DELAY_MS);
418	+	awaitTermination(t2, MEDIUM_DELAY_MS);
419	+	checkCancelled(task);
420	+	}
421
422		/**
423		* A runtime exception in task causes get to throw ExecutionException
424		*/
425	<	public void testGet_ExecutionException() {
426	<	final FutureTask ft = new FutureTask(new Callable() {
427	<	public Object call() {
428	<	int i = 5/0;
429	<	return Boolean.TRUE;
430	<	}
431	<	});
432	<	try {
433	<	ft.run();
434	<	ft.get();
435	<	shouldThrow();
436	<	} catch (ExecutionException success) {
425	>	public void testGet_ExecutionException() throws InterruptedException {
426	>	final FutureTask task = new FutureTask(new Callable() {
427	>	public Object call() {
428	>	return 5/0;
429	>	}});
430	>
431	>	task.run();
432	>	try {
433	>	task.get();
434	>	shouldThrow();
435	>	} catch (ExecutionException success) {
436	>	assertTrue(success.getCause() instanceof ArithmeticException);
437	>	checkCompletedAbnormally(task, success.getCause());
438		}
381	–	catch (Exception e) {
382	–	unexpectedException();
383	–	}
439		}
440
441		/**
442	<	*  A runtime exception in task causes timed get to throw ExecutionException
443	<	*/
444	<	public void testTimedGet_ExecutionException2() {
445	<	final FutureTask ft = new FutureTask(new Callable() {
446	<	public Object call() {
447	<	int i = 5/0;
448	<	return Boolean.TRUE;
394	<	}
395	<	});
396	<	try {
397	<	ft.run();
398	<	ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
399	<	shouldThrow();
400	<	} catch (ExecutionException success) {
401	<	} catch (TimeoutException success) { } // unlikely but OK
402	<	catch (Exception e) {
403	<	unexpectedException();
404	<	}
405	<	}
442	>	* A runtime exception in task causes timed get to throw ExecutionException
443	>	*/
444	>	public void testTimedGet_ExecutionException2() throws Exception {
445	>	final FutureTask task = new FutureTask(new Callable() {
446	>	public Object call() {
447	>	return 5/0;
448	>	}});
449
450	+	task.run();
451	+	try {
452	+	task.get(SHORT_DELAY_MS, MILLISECONDS);
453	+	shouldThrow();
454	+	} catch (ExecutionException success) {
455	+	assertTrue(success.getCause() instanceof ArithmeticException);
456	+	checkCompletedAbnormally(task, success.getCause());
457	+	}
458	+	}
459
460		/**
461		* Interrupting a waiting get causes it to throw InterruptedException
462		*/
463	<	public void testGet_InterruptedException() {
464	<	final FutureTask ft = new FutureTask(new NoOpCallable());
465	<	Thread t = new Thread(new Runnable() {
466	<	public void run() {
467	<	try {
468	<	ft.get();
469	<	threadShouldThrow();
470	<	} catch (InterruptedException success) {
471	<	} catch (Exception e) {
472	<	threadUnexpectedException();
473	<	}
474	<	}
475	<	});
424	<	try {
425	<	t.start();
426	<	Thread.sleep(SHORT_DELAY_MS);
427	<	t.interrupt();
428	<	t.join();
429	<	} catch (Exception e) {
430	<	unexpectedException();
431	<	}
463	>	public void testGet_InterruptedException() throws InterruptedException {
464	>	final CountDownLatch threadStarted = new CountDownLatch(1);
465	>	final FutureTask task = new FutureTask(new NoOpCallable());
466	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
467	>	public void realRun() throws Exception {
468	>	threadStarted.countDown();
469	>	task.get();
470	>	}});
471	>
472	>	threadStarted.await();
473	>	t.interrupt();
474	>	awaitTermination(t, MEDIUM_DELAY_MS);
475	>	checkNotDone(task);
476		}
477
478		/**
479	<	*  Interrupting a waiting timed get causes it to throw InterruptedException
480	<	*/
481	<	public void testTimedGet_InterruptedException2() {
482	<	final FutureTask ft = new FutureTask(new NoOpCallable());
483	<	Thread t = new Thread(new Runnable() {
484	<	public void run() {
485	<	try {
486	<	ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS);
487	<	threadShouldThrow();
488	<	} catch (InterruptedException success) {}
489	<	catch (Exception e) {
490	<	threadUnexpectedException();
491	<	}
492	<	}
493	<	});
450	<	try {
451	<	t.start();
452	<	Thread.sleep(SHORT_DELAY_MS);
453	<	t.interrupt();
454	<	t.join();
455	<	} catch (Exception e) {
456	<	unexpectedException();
457	<	}
479	>	* Interrupting a waiting timed get causes it to throw InterruptedException
480	>	*/
481	>	public void testTimedGet_InterruptedException2() throws InterruptedException {
482	>	final CountDownLatch threadStarted = new CountDownLatch(1);
483	>	final FutureTask task = new FutureTask(new NoOpCallable());
484	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
485	>	public void realRun() throws Exception {
486	>	threadStarted.countDown();
487	>	task.get(LONG_DELAY_MS, MILLISECONDS);
488	>	}});
489	>
490	>	threadStarted.await();
491	>	t.interrupt();
492	>	awaitTermination(t, MEDIUM_DELAY_MS);
493	>	checkNotDone(task);
494		}
495
496		/**
497		* A timed out timed get throws TimeoutException
498		*/
499	<	public void testGet_TimeoutException() {
500	<	try {
501	<	FutureTask ft = new FutureTask(new NoOpCallable());
502	<	ft.get(1,TimeUnit.MILLISECONDS);
503	<	shouldThrow();
504	<	} catch (TimeoutException success) {}
469	<	catch (Exception success) {
470	<	unexpectedException();
471	<	}
499	>	public void testGet_TimeoutException() throws Exception {
500	>	try {
501	>	FutureTask task = new FutureTask(new NoOpCallable());
502	>	task.get(1, MILLISECONDS);
503	>	shouldThrow();
504	>	} catch (TimeoutException success) {}
505		}
506
507		}

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