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Comparing jsr166/src/test/tck/FutureTaskTest.java (file contents):
Revision 1.17 by jsr166, Sat Nov 21 10:25:05 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);
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		/**
93		* Subclass to expose protected methods
94		*/
#	Line 57 | Line 126 | public class FutureTaskTest extends JSR1
126		FutureTask task = new FutureTask(new NoOpCallable());
127		task.run();
128		assertTrue(task.isDone());
129	<	assertFalse(task.isCancelled());
129	>	checkCompletedNormally(task, Boolean.TRUE);
130		}
131
132		/**
#	Line 66 | Line 135 | public class FutureTaskTest extends JSR1
135		public void testRunAndReset() {
136		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
137		assertTrue(task.runAndReset());
138	<	assertFalse(task.isDone());
138	>	checkNotDone(task);
139		}
140
141		/**
#	Line 76 | Line 145 | public class FutureTaskTest extends JSR1
145		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
146		assertTrue(task.cancel(false));
147		assertFalse(task.runAndReset());
148	<	assertTrue(task.isDone());
80	<	assertTrue(task.isCancelled());
148	>	checkCancelled(task);
149		}
150
83	–
84	–
151		/**
152		* setting value causes get to return it
153		*/
154		public void testSet() throws Exception {
155		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
156		task.set(one);
157	<	assertEquals(task.get(), one);
157	>	assertSame(task.get(), one);
158	>	checkCompletedNormally(task, one);
159		}
160
161		/**
#	Line 103 | Line 170 | public class FutureTaskTest extends JSR1
170		shouldThrow();
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());
182		assertTrue(task.cancel(false));
183		task.run();
184	<	assertTrue(task.isDone());
117	<	assertTrue(task.isCancelled());
184	>	checkCancelled(task);
185		}
186
187		/**
#	Line 124 | Line 191 | public class FutureTaskTest extends JSR1
191		FutureTask task = new FutureTask(new NoOpCallable());
192		assertTrue(task.cancel(true));
193		task.run();
194	<	assertTrue(task.isDone());
128	<	assertTrue(task.isCancelled());
194	>	checkCancelled(task);
195		}
196
197		/**
#	Line 135 | Line 201 | public class FutureTaskTest extends JSR1
201		FutureTask task = new FutureTask(new NoOpCallable());
202		task.run();
203		assertFalse(task.cancel(false));
204	<	assertTrue(task.isDone());
139	<	assertFalse(task.isCancelled());
204	>	checkCompletedNormally(task, Boolean.TRUE);
205		}
206
207		/**
208		* cancel(true) interrupts a running task
209		*/
210		public void testCancelInterrupt() throws InterruptedException {
211	+	final CountDownLatch threadStarted = new CountDownLatch(1);
212		final FutureTask task =
213	<	new FutureTask(new CheckedInterruptedCallable<Object>() {
214	<	public Object realCall() throws InterruptedException {
215	<	Thread.sleep(SMALL_DELAY_MS);
216	<	return Boolean.TRUE;
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		}});
225
226	<	Thread t = new Thread(task);
227	<	t.start();
155	<	Thread.sleep(SHORT_DELAY_MS);
226	>	Thread t = newStartedThread(task);
227	>	threadStarted.await();
228		assertTrue(task.cancel(true));
229	<	t.join();
230	<	assertTrue(task.isDone());
231	<	assertTrue(task.isCancelled());
229	>	checkCancelled(task);
230	>	awaitTermination(t, MEDIUM_DELAY_MS);
231	>	checkCancelled(task);
232		}
233
162	–
234		/**
235		* cancel(false) does not interrupt a running task
236		*/
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	+	}});
248	+
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	+	* run in one thread causes get in another thread to retrieve value
260	+	*/
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 {
170	–	Thread.sleep(MEDIUM_DELAY_MS);
267		return Boolean.TRUE;
268		}});
269
270	<	Thread t = new Thread(task);
271	<	t.start();
272	<	Thread.sleep(SHORT_DELAY_MS);
273	<	assertTrue(task.cancel(false));
274	<	t.join();
275	<	assertTrue(task.isDone());
276	<	assertTrue(task.isCancelled());
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 get in another thread to retrieve value
286		*/
287	<	public void testGet1() throws InterruptedException {
288	<	final FutureTask ft =
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	>	}});
295	>
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	>	* run in one thread causes timed get in another thread to retrieve value
312	>	*/
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	<	Thread t = new Thread(new CheckedRunnable() {
321	>
322	>	Thread t = newStartedThread(new CheckedRunnable() {
323		public void realRun() throws Exception {
324	<	assertSame(Boolean.TRUE, ft.get());
324	>	threadStarted.countDown();
325	>	assertSame(Boolean.TRUE,
326	>	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
327		}});
328
329	<	assertFalse(ft.isDone());
330	<	assertFalse(ft.isCancelled());
331	<	t.start();
332	<	Thread.sleep(SHORT_DELAY_MS);
333	<	ft.run();
334	<	t.join();
203	<	assertTrue(ft.isDone());
204	<	assertFalse(ft.isCancelled());
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		* set in one thread causes timed get in another thread to retrieve value
339		*/
340	<	public void testTimedGet1() throws InterruptedException {
341	<	final FutureTask ft =
342	<	new FutureTask(new CheckedCallable<Object>() {
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	<	Thread t = new Thread(new CheckedRunnable() {
348	>
349	>	Thread t = newStartedThread(new CheckedRunnable() {
350		public void realRun() throws Exception {
351	<	assertSame(Boolean.TRUE, ft.get(SMALL_DELAY_MS, MILLISECONDS));
351	>	threadStarted.countDown();
352	>	assertSame(Boolean.FALSE,
353	>	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
354		}});
355
356	<	assertFalse(ft.isDone());
357	<	assertFalse(ft.isCancelled());
358	<	t.start();
359	<	Thread.sleep(SHORT_DELAY_MS);
360	<	ft.run();
361	<	t.join();
227	<	assertTrue(ft.isDone());
228	<	assertFalse(ft.isCancelled());
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 CancellationException
365	>	* Cancelling a task causes timed get in another thread to throw
366	>	* CancellationException
367		*/
368		public void testTimedGet_Cancellation() throws InterruptedException {
369	<	final FutureTask ft =
369	>	final CountDownLatch threadStarted = new CountDownLatch(2);
370	>	final FutureTask task =
371		new FutureTask(new CheckedInterruptedCallable<Object>() {
372		public Object realCall() throws InterruptedException {
373	<	Thread.sleep(SMALL_DELAY_MS);
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	<	ft.get(MEDIUM_DELAY_MS, MILLISECONDS);
380	>	threadStarted.countDown();
381	>	task.get(MEDIUM_DELAY_MS, MILLISECONDS);
382		}};
383	<	Thread t2 = new Thread(ft);
383	>	Thread t2 = new Thread(task);
384		t1.start();
385		t2.start();
386	<	Thread.sleep(SHORT_DELAY_MS);
387	<	ft.cancel(true);
388	<	t1.join();
389	<	t2.join();
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 CancellationException
394	>	* Cancelling a task causes get in another thread to throw
395	>	* CancellationException
396		*/
397		public void testGet_Cancellation() throws InterruptedException {
398	<	final FutureTask ft =
398	>	final CountDownLatch threadStarted = new CountDownLatch(2);
399	>	final FutureTask task =
400		new FutureTask(new CheckedInterruptedCallable<Object>() {
401		public Object realCall() throws InterruptedException {
402	<	Thread.sleep(SMALL_DELAY_MS);
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	<	ft.get();
409	>	threadStarted.countDown();
410	>	task.get();
411		}};
412	<
270	<	Thread t2 = new Thread(ft);
412	>	Thread t2 = new Thread(task);
413		t1.start();
414		t2.start();
415	<	Thread.sleep(SHORT_DELAY_MS);
416	<	ft.cancel(true);
417	<	t1.join();
418	<	t2.join();
415	>	threadStarted.await();
416	>	task.cancel(true);
417	>	awaitTermination(t1, MEDIUM_DELAY_MS);
418	>	awaitTermination(t2, MEDIUM_DELAY_MS);
419	>	checkCancelled(task);
420		}
421
279	–
422		/**
423		* A runtime exception in task causes get to throw ExecutionException
424		*/
425		public void testGet_ExecutionException() throws InterruptedException {
426	<	final FutureTask ft = new FutureTask(new Callable() {
426	>	final FutureTask task = new FutureTask(new Callable() {
427		public Object call() {
428		return 5/0;
429		}});
430
431	<	ft.run();
431	>	task.run();
432		try {
433	<	ft.get();
433	>	task.get();
434		shouldThrow();
435		} catch (ExecutionException success) {
436		assertTrue(success.getCause() instanceof ArithmeticException);
437	+	checkCompletedAbnormally(task, success.getCause());
438		}
439		}
440
441		/**
442	<	*  A runtime exception in task causes timed get to throw ExecutionException
442	>	* A runtime exception in task causes timed get to throw ExecutionException
443		*/
444		public void testTimedGet_ExecutionException2() throws Exception {
445	<	final FutureTask ft = new FutureTask(new Callable() {
445	>	final FutureTask task = new FutureTask(new Callable() {
446		public Object call() {
447		return 5/0;
448		}});
449
450	<	ft.run();
450	>	task.run();
451		try {
452	<	ft.get(SHORT_DELAY_MS, MILLISECONDS);
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
316	–
460		/**
461		* Interrupting a waiting get causes it to throw InterruptedException
462		*/
463		public void testGet_InterruptedException() throws InterruptedException {
464	<	final FutureTask ft = new FutureTask(new NoOpCallable());
465	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
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	<	ft.get();
468	>	threadStarted.countDown();
469	>	task.get();
470		}});
471
472	<	t.start();
328	<	Thread.sleep(SHORT_DELAY_MS);
472	>	threadStarted.await();
473		t.interrupt();
474	<	t.join();
474	>	awaitTermination(t, MEDIUM_DELAY_MS);
475	>	checkNotDone(task);
476		}
477
478		/**
479	<	*  Interrupting a waiting timed get causes it to throw InterruptedException
479	>	* Interrupting a waiting timed get causes it to throw InterruptedException
480		*/
481		public void testTimedGet_InterruptedException2() throws InterruptedException {
482	<	final FutureTask ft = new FutureTask(new NoOpCallable());
483	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
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	<	ft.get(LONG_DELAY_MS,MILLISECONDS);
486	>	threadStarted.countDown();
487	>	task.get(LONG_DELAY_MS, MILLISECONDS);
488		}});
489
490	<	t.start();
344	<	Thread.sleep(SHORT_DELAY_MS);
490	>	threadStarted.await();
491		t.interrupt();
492	<	t.join();
492	>	awaitTermination(t, MEDIUM_DELAY_MS);
493	>	checkNotDone(task);
494		}
495
496		/**
#	Line 351 | Line 498 | public class FutureTaskTest extends JSR1
498		*/
499		public void testGet_TimeoutException() throws Exception {
500		try {
501	<	FutureTask ft = new FutureTask(new NoOpCallable());
502	<	ft.get(1,MILLISECONDS);
501	>	FutureTask task = new FutureTask(new NoOpCallable());
502	>	task.get(1, MILLISECONDS);
503		shouldThrow();
504		} catch (TimeoutException success) {}
505		}

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