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

Comparing jsr166/src/test/tck/FutureTaskTest.java (file contents):
Revision 1.21 by jsr166, Sat Oct 9 19:30:35 2010 UTC vs.
Revision 1.32 by jsr166, Sun Dec 16 18:52:27 2012 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.security.Permission;
11	>	import java.util.concurrent.Callable;
12	>	import java.util.concurrent.CancellationException;
13	>	import java.util.concurrent.CountDownLatch;
14	>	import java.util.concurrent.ExecutionException;
15	>	import java.util.concurrent.Future;
16	>	import java.util.concurrent.FutureTask;
17	>	import java.util.concurrent.TimeoutException;
18	>	import java.util.concurrent.atomic.AtomicInteger;
19		import static java.util.concurrent.TimeUnit.MILLISECONDS;
20	+	import static java.util.concurrent.TimeUnit.SECONDS;
21		import java.util.*;
22
23		public class FutureTaskTest extends JSR166TestCase {
#	Line 20 | Line 29 | public class FutureTaskTest extends JSR1
29		return new TestSuite(FutureTaskTest.class);
30		}
31
32	+	void checkIsDone(Future<?> f) {
33	+	assertTrue(f.isDone());
34	+	assertFalse(f.cancel(false));
35	+	assertFalse(f.cancel(true));
36	+	if (f instanceof PublicFutureTask) {
37	+	PublicFutureTask pf = (PublicFutureTask) f;
38	+	assertEquals(1, pf.doneCount());
39	+	assertFalse(pf.runAndReset());
40	+	assertEquals(1, pf.doneCount());
41	+
42	+	// Check that run and runAndReset have no effect.
43	+	int savedRunCount = pf.runCount();
44	+	int savedSetCount = pf.setCount();
45	+	int savedSetExceptionCount = pf.setExceptionCount();
46	+	pf.run();
47	+	pf.runAndReset();
48	+	assertEquals(savedRunCount, pf.runCount());
49	+	assertEquals(savedSetCount, pf.setCount());
50	+	assertEquals(savedSetExceptionCount, pf.setExceptionCount());
51	+	assertTrue(f.isDone());
52	+	}
53	+	}
54	+
55	+	void checkNotDone(Future<?> f) {
56	+	assertFalse(f.isDone());
57	+	assertFalse(f.isCancelled());
58	+	if (f instanceof PublicFutureTask) {
59	+	PublicFutureTask pf = (PublicFutureTask) f;
60	+	assertEquals(0, pf.doneCount());
61	+	assertEquals(0, pf.setCount());
62	+	assertEquals(0, pf.setExceptionCount());
63	+	}
64	+	}
65	+
66	+	void checkIsRunning(Future<?> f) {
67	+	checkNotDone(f);
68	+	if (f instanceof FutureTask) {
69	+	FutureTask ft = (FutureTask<?>) f;
70	+	// Check that run methods do nothing
71	+	ft.run();
72	+	if (f instanceof PublicFutureTask)
73	+	assertFalse(((PublicFutureTask) f).runAndReset());
74	+	checkNotDone(f);
75	+	}
76	+	}
77	+
78	+	<T> void checkCompletedNormally(Future<T> f, T expected) {
79	+	checkIsDone(f);
80	+	assertFalse(f.isCancelled());
81	+
82	+	try {
83	+	assertSame(expected, f.get());
84	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
85	+	try {
86	+	assertSame(expected, f.get(5L, SECONDS));
87	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
88	+	}
89	+
90	+	void checkCancelled(Future<?> f) {
91	+	checkIsDone(f);
92	+	assertTrue(f.isCancelled());
93	+
94	+	try {
95	+	f.get();
96	+	shouldThrow();
97	+	} catch (CancellationException success) {
98	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
99	+
100	+	try {
101	+	f.get(5L, SECONDS);
102	+	shouldThrow();
103	+	} catch (CancellationException success) {
104	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
105	+	}
106	+
107	+	void tryToConfuseDoneTask(PublicFutureTask pf) {
108	+	pf.set(new Object());
109	+	pf.setException(new Error());
110	+	for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
111	+	pf.cancel(true);
112	+	}
113	+	}
114	+
115	+	void checkCompletedAbnormally(Future<?> f, Throwable t) {
116	+	checkIsDone(f);
117	+	assertFalse(f.isCancelled());
118	+
119	+	try {
120	+	f.get();
121	+	shouldThrow();
122	+	} catch (ExecutionException success) {
123	+	assertSame(t, success.getCause());
124	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
125	+
126	+	try {
127	+	f.get(5L, SECONDS);
128	+	shouldThrow();
129	+	} catch (ExecutionException success) {
130	+	assertSame(t, success.getCause());
131	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
132	+	}
133	+
134		/**
135		* Subclass to expose protected methods
136		*/
137		static class PublicFutureTask extends FutureTask {
138	<	public PublicFutureTask(Callable r) { super(r); }
139	<	public boolean runAndReset() { return super.runAndReset(); }
140	<	public void set(Object x) { super.set(x); }
141	<	public void setException(Throwable t) { super.setException(t); }
138	>	private final AtomicInteger runCount;
139	>	private final AtomicInteger doneCount = new AtomicInteger(0);
140	>	private final AtomicInteger runAndResetCount = new AtomicInteger(0);
141	>	private final AtomicInteger setCount = new AtomicInteger(0);
142	>	private final AtomicInteger setExceptionCount = new AtomicInteger(0);
143	>	public int runCount() { return runCount.get(); }
144	>	public int doneCount() { return doneCount.get(); }
145	>	public int runAndResetCount() { return runAndResetCount.get(); }
146	>	public int setCount() { return setCount.get(); }
147	>	public int setExceptionCount() { return setExceptionCount.get(); }
148	>
149	>	PublicFutureTask(Runnable runnable) {
150	>	this(runnable, seven);
151	>	}
152	>	PublicFutureTask(Runnable runnable, Object result) {
153	>	this(runnable, result, new AtomicInteger(0));
154	>	}
155	>	private PublicFutureTask(final Runnable runnable, Object result,
156	>	final AtomicInteger runCount) {
157	>	super(new Runnable() {
158	>	public void run() {
159	>	runCount.getAndIncrement();
160	>	runnable.run();
161	>	}}, result);
162	>	this.runCount = runCount;
163	>	}
164	>	PublicFutureTask(Callable callable) {
165	>	this(callable, new AtomicInteger(0));
166	>	}
167	>	private PublicFutureTask(final Callable callable,
168	>	final AtomicInteger runCount) {
169	>	super(new Callable() {
170	>	public Object call() throws Exception {
171	>	runCount.getAndIncrement();
172	>	return callable.call();
173	>	}});
174	>	this.runCount = runCount;
175	>	}
176	>	@Override public void done() {
177	>	assertTrue(isDone());
178	>	doneCount.incrementAndGet();
179	>	super.done();
180	>	}
181	>	@Override public boolean runAndReset() {
182	>	runAndResetCount.incrementAndGet();
183	>	return super.runAndReset();
184	>	}
185	>	@Override public void set(Object x) {
186	>	setCount.incrementAndGet();
187	>	super.set(x);
188	>	}
189	>	@Override public void setException(Throwable t) {
190	>	setExceptionCount.incrementAndGet();
191	>	super.setException(t);
192	>	}
193	>	}
194	>
195	>	class Counter extends CheckedRunnable {
196	>	final AtomicInteger count = new AtomicInteger(0);
197	>	public int get() { return count.get(); }
198	>	public void realRun() {
199	>	count.getAndIncrement();
200	>	}
201		}
202
203		/**
204	<	* Creating a future with a null callable throws NPE
204	>	* creating a future with a null callable throws NullPointerException
205		*/
206		public void testConstructor() {
207		try {
208	<	FutureTask task = new FutureTask(null);
208	>	new FutureTask(null);
209		shouldThrow();
210		} catch (NullPointerException success) {}
211		}
212
213		/**
214	<	* creating a future with null runnable fails
214	>	* creating a future with null runnable throws NullPointerException
215		*/
216		public void testConstructor2() {
217		try {
218	<	FutureTask task = new FutureTask(null, Boolean.TRUE);
218	>	new FutureTask(null, Boolean.TRUE);
219		shouldThrow();
220		} catch (NullPointerException success) {}
221		}
#	Line 54 | Line 224 | public class FutureTaskTest extends JSR1
224		* isDone is true when a task completes
225		*/
226		public void testIsDone() {
227	<	FutureTask task = new FutureTask(new NoOpCallable());
227	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
228	>	assertFalse(task.isDone());
229		task.run();
230		assertTrue(task.isDone());
231	<	assertFalse(task.isCancelled());
231	>	checkCompletedNormally(task, Boolean.TRUE);
232	>	assertEquals(1, task.runCount());
233		}
234
235		/**
#	Line 65 | Line 237 | public class FutureTaskTest extends JSR1
237		*/
238		public void testRunAndReset() {
239		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
240	<	assertTrue(task.runAndReset());
241	<	assertFalse(task.isDone());
240	>	for (int i = 0; i < 3; i++) {
241	>	assertTrue(task.runAndReset());
242	>	checkNotDone(task);
243	>	assertEquals(i+1, task.runCount());
244	>	assertEquals(i+1, task.runAndResetCount());
245	>	assertEquals(0, task.setCount());
246	>	assertEquals(0, task.setExceptionCount());
247	>	}
248		}
249
250		/**
251		* runAndReset after cancellation fails
252		*/
253	<	public void testResetAfterCancel() {
254	<	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
255	<	assertTrue(task.cancel(false));
256	<	assertFalse(task.runAndReset());
257	<	assertTrue(task.isDone());
258	<	assertTrue(task.isCancelled());
253	>	public void testRunAndResetAfterCancel() {
254	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
255	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
256	>	assertTrue(task.cancel(mayInterruptIfRunning));
257	>	for (int i = 0; i < 3; i++) {
258	>	assertFalse(task.runAndReset());
259	>	assertEquals(0, task.runCount());
260	>	assertEquals(i+1, task.runAndResetCount());
261	>	assertEquals(0, task.setCount());
262	>	assertEquals(0, task.setExceptionCount());
263	>	}
264	>	tryToConfuseDoneTask(task);
265	>	checkCancelled(task);
266	>	}
267		}
268
83	–
84	–
269		/**
270		* setting value causes get to return it
271		*/
272		public void testSet() throws Exception {
273		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
274		task.set(one);
275	<	assertSame(task.get(), one);
275	>	for (int i = 0; i < 3; i++) {
276	>	assertSame(one, task.get());
277	>	assertSame(one, task.get(LONG_DELAY_MS, MILLISECONDS));
278	>	assertEquals(1, task.setCount());
279	>	}
280	>	tryToConfuseDoneTask(task);
281	>	checkCompletedNormally(task, one);
282	>	assertEquals(0, task.runCount());
283		}
284
285		/**
286		* setException causes get to throw ExecutionException
287		*/
288	<	public void testSetException() throws Exception {
288	>	public void testSetException_get() throws Exception {
289		Exception nse = new NoSuchElementException();
290		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
291		task.setException(nse);
292	+
293	+	try {
294	+	task.get();
295	+	shouldThrow();
296	+	} catch (ExecutionException success) {
297	+	assertSame(nse, success.getCause());
298	+	checkCompletedAbnormally(task, nse);
299	+	}
300	+
301		try {
302	<	Object x = task.get();
302	>	task.get(LONG_DELAY_MS, MILLISECONDS);
303		shouldThrow();
304		} catch (ExecutionException success) {
305	<	assertSame(success.getCause(), nse);
305	>	assertSame(nse, success.getCause());
306	>	checkCompletedAbnormally(task, nse);
307		}
308	+
309	+	assertEquals(1, task.setExceptionCount());
310	+	assertEquals(0, task.setCount());
311	+	tryToConfuseDoneTask(task);
312	+	checkCompletedAbnormally(task, nse);
313	+	assertEquals(0, task.runCount());
314		}
315
316		/**
317	<	* Cancelling before running succeeds
317	>	* cancel(false) before run succeeds
318		*/
319		public void testCancelBeforeRun() {
320	<	FutureTask task = new FutureTask(new NoOpCallable());
320	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
321		assertTrue(task.cancel(false));
322		task.run();
323	<	assertTrue(task.isDone());
323	>	assertEquals(0, task.runCount());
324	>	assertEquals(0, task.setCount());
325	>	assertEquals(0, task.setExceptionCount());
326		assertTrue(task.isCancelled());
327	+	assertTrue(task.isDone());
328	+	tryToConfuseDoneTask(task);
329	+	assertEquals(0, task.runCount());
330	+	checkCancelled(task);
331		}
332
333		/**
334	<	* Cancel(true) before run succeeds
334	>	* cancel(true) before run succeeds
335		*/
336		public void testCancelBeforeRun2() {
337	<	FutureTask task = new FutureTask(new NoOpCallable());
337	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
338		assertTrue(task.cancel(true));
339		task.run();
340	<	assertTrue(task.isDone());
340	>	assertEquals(0, task.runCount());
341	>	assertEquals(0, task.setCount());
342	>	assertEquals(0, task.setExceptionCount());
343		assertTrue(task.isCancelled());
344	+	assertTrue(task.isDone());
345	+	tryToConfuseDoneTask(task);
346	+	assertEquals(0, task.runCount());
347	+	checkCancelled(task);
348		}
349
350		/**
351	<	* cancel of a completed task fails
351	>	* cancel(false) of a completed task fails
352		*/
353		public void testCancelAfterRun() {
354	<	FutureTask task = new FutureTask(new NoOpCallable());
354	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
355		task.run();
356		assertFalse(task.cancel(false));
357	<	assertTrue(task.isDone());
358	<	assertFalse(task.isCancelled());
357	>	assertEquals(1, task.runCount());
358	>	assertEquals(1, task.setCount());
359	>	assertEquals(0, task.setExceptionCount());
360	>	tryToConfuseDoneTask(task);
361	>	checkCompletedNormally(task, Boolean.TRUE);
362	>	assertEquals(1, task.runCount());
363		}
364
365		/**
366	<	* cancel(true) interrupts a running task
366	>	* cancel(true) of a completed task fails
367		*/
368	<	public void testCancelInterrupt() throws InterruptedException {
369	<	final FutureTask task =
370	<	new FutureTask(new CheckedInterruptedCallable<Object>() {
371	<	public Object realCall() throws InterruptedException {
372	<	Thread.sleep(SMALL_DELAY_MS);
373	<	return Boolean.TRUE;
368	>	public void testCancelAfterRun2() {
369	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
370	>	task.run();
371	>	assertFalse(task.cancel(true));
372	>	assertEquals(1, task.runCount());
373	>	assertEquals(1, task.setCount());
374	>	assertEquals(0, task.setExceptionCount());
375	>	tryToConfuseDoneTask(task);
376	>	checkCompletedNormally(task, Boolean.TRUE);
377	>	assertEquals(1, task.runCount());
378	>	}
379	>
380	>	/**
381	>	* cancel(true) interrupts a running task that subsequently succeeds
382	>	*/
383	>	public void testCancelInterrupt() {
384	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
385	>	final PublicFutureTask task =
386	>	new PublicFutureTask(new CheckedRunnable() {
387	>	public void realRun() {
388	>	pleaseCancel.countDown();
389	>	try {
390	>	delay(LONG_DELAY_MS);
391	>	shouldThrow();
392	>	} catch (InterruptedException success) {}
393		}});
394
395	<	Thread t = new Thread(task);
396	<	t.start();
155	<	Thread.sleep(SHORT_DELAY_MS);
395	>	Thread t = newStartedThread(task);
396	>	await(pleaseCancel);
397		assertTrue(task.cancel(true));
398	<	t.join();
398	>	assertTrue(task.isCancelled());
399		assertTrue(task.isDone());
400	+	awaitTermination(t);
401	+	assertEquals(1, task.runCount());
402	+	assertEquals(1, task.setCount());
403	+	assertEquals(0, task.setExceptionCount());
404	+	tryToConfuseDoneTask(task);
405	+	checkCancelled(task);
406	+	}
407	+
408	+	/**
409	+	* cancel(true) interrupts a running task that subsequently
410	+	* succeeds, with a security manager that does not permit
411	+	* Thread.interrupt
412	+	*/
413	+	public void testCancelInterrupt_ThrowsSecurityException() {
414	+	if (System.getSecurityManager() != null)
415	+	return;
416	+
417	+	final CountDownLatch pleaseCancel = new CountDownLatch(1);
418	+	final CountDownLatch cancelled = new CountDownLatch(1);
419	+	final PublicFutureTask task =
420	+	new PublicFutureTask(new CheckedRunnable() {
421	+	public void realRun() {
422	+	pleaseCancel.countDown();
423	+	await(cancelled);
424	+	assertFalse(Thread.interrupted());
425	+	}});
426	+
427	+	final Thread t = newStartedThread(task);
428	+	await(pleaseCancel);
429	+	System.setSecurityManager(new SecurityManager() {
430	+	public void checkAccess(Thread t) { throw new SecurityException(); }
431	+	public void checkPermission(Permission p) {}});
432	+	try {
433	+	try {
434	+	task.cancel(true);
435	+	shouldThrow();
436	+	}
437	+	catch (SecurityException expected) {}
438	+	} finally {
439	+	System.setSecurityManager(null);
440	+	}
441		assertTrue(task.isCancelled());
442	+	assertTrue(task.isDone());
443	+	assertEquals(1, task.runCount());
444	+	assertEquals(1, task.doneCount());
445	+	assertEquals(0, task.setCount());
446	+	assertEquals(0, task.setExceptionCount());
447	+	cancelled.countDown();
448	+	awaitTermination(t);
449	+	assertEquals(1, task.setCount());
450	+	assertEquals(0, task.setExceptionCount());
451	+	tryToConfuseDoneTask(task);
452	+	checkCancelled(task);
453		}
454
455	+	/**
456	+	* cancel(true) interrupts a running task that subsequently throws
457	+	*/
458	+	public void testCancelInterrupt_taskFails() {
459	+	final CountDownLatch pleaseCancel = new CountDownLatch(1);
460	+	final PublicFutureTask task =
461	+	new PublicFutureTask(new Runnable() {
462	+	public void run() {
463	+	try {
464	+	pleaseCancel.countDown();
465	+	delay(LONG_DELAY_MS);
466	+	} finally { throw new RuntimeException(); }
467	+	}});
468	+
469	+	Thread t = newStartedThread(task);
470	+	await(pleaseCancel);
471	+	assertTrue(task.cancel(true));
472	+	assertTrue(task.isCancelled());
473	+	awaitTermination(t);
474	+	assertEquals(1, task.runCount());
475	+	assertEquals(0, task.setCount());
476	+	assertEquals(1, task.setExceptionCount());
477	+	tryToConfuseDoneTask(task);
478	+	checkCancelled(task);
479	+	}
480
481		/**
482		* cancel(false) does not interrupt a running task
483		*/
484	<	public void testCancelNoInterrupt() throws InterruptedException {
485	<	final FutureTask task =
486	<	new FutureTask(new CheckedCallable<Object>() {
487	<	public Object realCall() throws InterruptedException {
488	<	Thread.sleep(MEDIUM_DELAY_MS);
484	>	public void testCancelNoInterrupt() {
485	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
486	>	final CountDownLatch cancelled = new CountDownLatch(1);
487	>	final PublicFutureTask task =
488	>	new PublicFutureTask(new CheckedCallable<Boolean>() {
489	>	public Boolean realCall() {
490	>	pleaseCancel.countDown();
491	>	await(cancelled);
492	>	assertFalse(Thread.interrupted());
493		return Boolean.TRUE;
494		}});
495
496	<	Thread t = new Thread(task);
497	<	t.start();
176	<	Thread.sleep(SHORT_DELAY_MS);
496	>	Thread t = newStartedThread(task);
497	>	await(pleaseCancel);
498		assertTrue(task.cancel(false));
178	–	t.join();
179	–	assertTrue(task.isDone());
499		assertTrue(task.isCancelled());
500	+	cancelled.countDown();
501	+	awaitTermination(t);
502	+	assertEquals(1, task.runCount());
503	+	assertEquals(1, task.setCount());
504	+	assertEquals(0, task.setExceptionCount());
505	+	tryToConfuseDoneTask(task);
506	+	checkCancelled(task);
507		}
508
509		/**
510	<	* set in one thread causes get in another thread to retrieve value
510	>	* run in one thread causes get in another thread to retrieve value
511		*/
512	<	public void testGet1() throws InterruptedException {
513	<	final FutureTask ft =
514	<	new FutureTask(new CheckedCallable<Object>() {
515	<	public Object realCall() throws InterruptedException {
516	<	return Boolean.TRUE;
512	>	public void testGetRun() {
513	>	final CountDownLatch pleaseRun = new CountDownLatch(2);
514	>
515	>	final PublicFutureTask task =
516	>	new PublicFutureTask(new CheckedCallable<Object>() {
517	>	public Object realCall() {
518	>	return two;
519		}});
520	<	Thread t = new Thread(new CheckedRunnable() {
520	>
521	>	Thread t1 = newStartedThread(new CheckedRunnable() {
522		public void realRun() throws Exception {
523	<	assertSame(Boolean.TRUE, ft.get());
523	>	pleaseRun.countDown();
524	>	assertSame(two, task.get());
525		}});
526
527	<	assertFalse(ft.isDone());
198	<	assertFalse(ft.isCancelled());
199	<	t.start();
200	<	Thread.sleep(SHORT_DELAY_MS);
201	<	ft.run();
202	<	t.join();
203	<	assertTrue(ft.isDone());
204	<	assertFalse(ft.isCancelled());
205	<	}
206	<
207	<	/**
208	<	* set in one thread causes timed get in another thread to retrieve value
209	<	*/
210	<	public void testTimedGet1() throws InterruptedException {
211	<	final FutureTask ft =
212	<	new FutureTask(new CheckedCallable<Object>() {
213	<	public Object realCall() throws InterruptedException {
214	<	return Boolean.TRUE;
215	<	}});
216	<	Thread t = new Thread(new CheckedRunnable() {
527	>	Thread t2 = newStartedThread(new CheckedRunnable() {
528		public void realRun() throws Exception {
529	<	assertSame(Boolean.TRUE, ft.get(SMALL_DELAY_MS, MILLISECONDS));
529	>	pleaseRun.countDown();
530	>	assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS));
531		}});
532
533	<	assertFalse(ft.isDone());
534	<	assertFalse(ft.isCancelled());
535	<	t.start();
536	<	Thread.sleep(SHORT_DELAY_MS);
537	<	ft.run();
538	<	t.join();
539	<	assertTrue(ft.isDone());
540	<	assertFalse(ft.isCancelled());
533	>	await(pleaseRun);
534	>	checkNotDone(task);
535	>	assertTrue(t1.isAlive());
536	>	assertTrue(t2.isAlive());
537	>	task.run();
538	>	checkCompletedNormally(task, two);
539	>	assertEquals(1, task.runCount());
540	>	assertEquals(1, task.setCount());
541	>	assertEquals(0, task.setExceptionCount());
542	>	awaitTermination(t1);
543	>	awaitTermination(t2);
544	>	tryToConfuseDoneTask(task);
545	>	checkCompletedNormally(task, two);
546		}
547
548		/**
549	<	* Cancelling a task causes timed get in another thread to throw
233	<	* CancellationException
549	>	* set in one thread causes get in another thread to retrieve value
550		*/
551	<	public void testTimedGet_Cancellation() throws InterruptedException {
552	<	final FutureTask ft =
553	<	new FutureTask(new CheckedInterruptedCallable<Object>() {
551	>	public void testGetSet() {
552	>	final CountDownLatch pleaseSet = new CountDownLatch(2);
553	>
554	>	final PublicFutureTask task =
555	>	new PublicFutureTask(new CheckedCallable<Object>() {
556		public Object realCall() throws InterruptedException {
557	<	Thread.sleep(SMALL_DELAY_MS);
240	<	return Boolean.TRUE;
557	>	return two;
558		}});
559
560	<	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
560	>	Thread t1 = newStartedThread(new CheckedRunnable() {
561		public void realRun() throws Exception {
562	<	ft.get(MEDIUM_DELAY_MS, MILLISECONDS);
563	<	}};
564	<	Thread t2 = new Thread(ft);
565	<	t1.start();
566	<	t2.start();
567	<	Thread.sleep(SHORT_DELAY_MS);
568	<	ft.cancel(true);
569	<	t1.join();
570	<	t2.join();
562	>	pleaseSet.countDown();
563	>	assertSame(two, task.get());
564	>	}});
565	>
566	>	Thread t2 = newStartedThread(new CheckedRunnable() {
567	>	public void realRun() throws Exception {
568	>	pleaseSet.countDown();
569	>	assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS));
570	>	}});
571	>
572	>	await(pleaseSet);
573	>	checkNotDone(task);
574	>	assertTrue(t1.isAlive());
575	>	assertTrue(t2.isAlive());
576	>	task.set(two);
577	>	assertEquals(0, task.runCount());
578	>	assertEquals(1, task.setCount());
579	>	assertEquals(0, task.setExceptionCount());
580	>	tryToConfuseDoneTask(task);
581	>	checkCompletedNormally(task, two);
582	>	awaitTermination(t1);
583	>	awaitTermination(t2);
584		}
585
586		/**
587	<	* Cancelling a task causes get in another thread to throw
587	>	* Cancelling a task causes timed get in another thread to throw
588		* CancellationException
589		*/
590	<	public void testGet_Cancellation() throws InterruptedException {
591	<	final FutureTask ft =
592	<	new FutureTask(new CheckedInterruptedCallable<Object>() {
593	<	public Object realCall() throws InterruptedException {
594	<	Thread.sleep(SMALL_DELAY_MS);
595	<	return Boolean.TRUE;
596	<	}});
597	<	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
598	<	public void realRun() throws Exception {
599	<	ft.get();
600	<	}};
601	<
602	<	Thread t2 = new Thread(ft);
603	<	t1.start();
604	<	t2.start();
605	<	Thread.sleep(SHORT_DELAY_MS);
606	<	ft.cancel(true);
607	<	t1.join();
608	<	t2.join();
590	>	public void testTimedGet_Cancellation() {
591	>	for (final boolean mayInterruptIfRunning :
592	>	new boolean[] { true, false }) {
593	>	final CountDownLatch pleaseCancel = new CountDownLatch(3);
594	>	final CountDownLatch cancelled = new CountDownLatch(1);
595	>	final PublicFutureTask task =
596	>	new PublicFutureTask(new CheckedCallable<Object>() {
597	>	public Object realCall() throws InterruptedException {
598	>	pleaseCancel.countDown();
599	>	if (mayInterruptIfRunning) {
600	>	try {
601	>	delay(2*LONG_DELAY_MS);
602	>	} catch (InterruptedException success) {}
603	>	} else {
604	>	await(cancelled);
605	>	}
606	>	return two;
607	>	}});
608	>
609	>	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
610	>	public void realRun() throws Exception {
611	>	pleaseCancel.countDown();
612	>	task.get();
613	>	}};
614	>	Thread t2 = new ThreadShouldThrow(CancellationException.class) {
615	>	public void realRun() throws Exception {
616	>	pleaseCancel.countDown();
617	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
618	>	}};
619	>	t1.start();
620	>	t2.start();
621	>	Thread t3 = newStartedThread(task);
622	>	await(pleaseCancel);
623	>	checkIsRunning(task);
624	>	task.cancel(mayInterruptIfRunning);
625	>	checkCancelled(task);
626	>	awaitTermination(t1);
627	>	awaitTermination(t2);
628	>	cancelled.countDown();
629	>	awaitTermination(t3);
630	>	assertEquals(1, task.runCount());
631	>	assertEquals(1, task.setCount());
632	>	assertEquals(0, task.setExceptionCount());
633	>	tryToConfuseDoneTask(task);
634	>	checkCancelled(task);
635	>	}
636		}
637
281	–
638		/**
639		* A runtime exception in task causes get to throw ExecutionException
640		*/
641		public void testGet_ExecutionException() throws InterruptedException {
642	<	final FutureTask ft = new FutureTask(new Callable() {
642	>	final ArithmeticException e = new ArithmeticException();
643	>	final PublicFutureTask task = new PublicFutureTask(new Callable() {
644		public Object call() {
645	<	return 5/0;
645	>	throw e;
646		}});
647
648	<	ft.run();
648	>	task.run();
649	>	assertEquals(1, task.runCount());
650	>	assertEquals(0, task.setCount());
651	>	assertEquals(1, task.setExceptionCount());
652		try {
653	<	ft.get();
653	>	task.get();
654		shouldThrow();
655		} catch (ExecutionException success) {
656	<	assertTrue(success.getCause() instanceof ArithmeticException);
656	>	assertSame(e, success.getCause());
657	>	tryToConfuseDoneTask(task);
658	>	checkCompletedAbnormally(task, success.getCause());
659		}
660		}
661
#	Line 301 | Line 663 | public class FutureTaskTest extends JSR1
663		* A runtime exception in task causes timed get to throw ExecutionException
664		*/
665		public void testTimedGet_ExecutionException2() throws Exception {
666	<	final FutureTask ft = new FutureTask(new Callable() {
666	>	final ArithmeticException e = new ArithmeticException();
667	>	final PublicFutureTask task = new PublicFutureTask(new Callable() {
668		public Object call() {
669	<	return 5/0;
669	>	throw e;
670		}});
671
672	<	ft.run();
672	>	task.run();
673		try {
674	<	ft.get(SHORT_DELAY_MS, MILLISECONDS);
674	>	task.get(LONG_DELAY_MS, MILLISECONDS);
675		shouldThrow();
676		} catch (ExecutionException success) {
677	<	assertTrue(success.getCause() instanceof ArithmeticException);
677	>	assertSame(e, success.getCause());
678	>	tryToConfuseDoneTask(task);
679	>	checkCompletedAbnormally(task, success.getCause());
680		}
681		}
682
318	–
683		/**
684	<	* Interrupting a waiting get causes it to throw InterruptedException
684	>	* get is interruptible
685		*/
686	<	public void testGet_InterruptedException() throws InterruptedException {
687	<	final FutureTask ft = new FutureTask(new NoOpCallable());
688	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
686	>	public void testGet_interruptible() {
687	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
688	>	final FutureTask task = new FutureTask(new NoOpCallable());
689	>	Thread t = newStartedThread(new CheckedRunnable() {
690		public void realRun() throws Exception {
691	<	ft.get();
691	>	Thread.currentThread().interrupt();
692	>	try {
693	>	task.get();
694	>	shouldThrow();
695	>	} catch (InterruptedException success) {}
696	>	assertFalse(Thread.interrupted());
697	>
698	>	pleaseInterrupt.countDown();
699	>	try {
700	>	task.get();
701	>	shouldThrow();
702	>	} catch (InterruptedException success) {}
703	>	assertFalse(Thread.interrupted());
704		}});
705
706	<	t.start();
330	<	Thread.sleep(SHORT_DELAY_MS);
706	>	await(pleaseInterrupt);
707		t.interrupt();
708	<	t.join();
708	>	awaitTermination(t);
709	>	checkNotDone(task);
710		}
711
712		/**
713	<	* Interrupting a waiting timed get causes it to throw InterruptedException
713	>	* timed get is interruptible
714		*/
715	<	public void testTimedGet_InterruptedException2() throws InterruptedException {
716	<	final FutureTask ft = new FutureTask(new NoOpCallable());
717	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
715	>	public void testTimedGet_interruptible() {
716	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
717	>	final FutureTask task = new FutureTask(new NoOpCallable());
718	>	Thread t = newStartedThread(new CheckedRunnable() {
719		public void realRun() throws Exception {
720	<	ft.get(LONG_DELAY_MS,MILLISECONDS);
720	>	Thread.currentThread().interrupt();
721	>	try {
722	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
723	>	shouldThrow();
724	>	} catch (InterruptedException success) {}
725	>	assertFalse(Thread.interrupted());
726	>
727	>	pleaseInterrupt.countDown();
728	>	try {
729	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
730	>	shouldThrow();
731	>	} catch (InterruptedException success) {}
732	>	assertFalse(Thread.interrupted());
733		}});
734
735	<	t.start();
346	<	Thread.sleep(SHORT_DELAY_MS);
735	>	await(pleaseInterrupt);
736		t.interrupt();
737	<	t.join();
737	>	awaitTermination(t);
738	>	checkNotDone(task);
739		}
740
741		/**
742		* A timed out timed get throws TimeoutException
743		*/
744		public void testGet_TimeoutException() throws Exception {
745	+	FutureTask task = new FutureTask(new NoOpCallable());
746	+	long startTime = System.nanoTime();
747		try {
748	<	FutureTask ft = new FutureTask(new NoOpCallable());
357	<	ft.get(1,MILLISECONDS);
748	>	task.get(timeoutMillis(), MILLISECONDS);
749		shouldThrow();
750	<	} catch (TimeoutException success) {}
750	>	} catch (TimeoutException success) {
751	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
752	>	}
753	>	}
754	>
755	>	/**
756	>	* timed get with null TimeUnit throws NullPointerException
757	>	*/
758	>	public void testGet_NullTimeUnit() throws Exception {
759	>	FutureTask task = new FutureTask(new NoOpCallable());
760	>	long[] timeouts = { Long.MIN_VALUE, 0L, Long.MAX_VALUE };
761	>
762	>	for (long timeout : timeouts) {
763	>	try {
764	>	task.get(timeout, null);
765	>	shouldThrow();
766	>	} catch (NullPointerException success) {}
767	>	}
768	>
769	>	task.run();
770	>
771	>	for (long timeout : timeouts) {
772	>	try {
773	>	task.get(timeout, null);
774	>	shouldThrow();
775	>	} catch (NullPointerException success) {}
776	>	}
777		}
778
779		}

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