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

Comparing jsr166/src/test/tck/FutureTaskTest.java (file contents):
Revision 1.25 by dl, Fri May 6 11:22:07 2011 UTC vs.
Revision 1.37 by jsr166, Sun Apr 21 06:54:11 2013 UTC

#	Line 7 | Line 7
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 java.util.concurrent.atomic.AtomicInteger;
18		import static java.util.concurrent.TimeUnit.MILLISECONDS;
19		import static java.util.concurrent.TimeUnit.SECONDS;
20		import java.util.*;
#	Line 21 | Line 28 | public class FutureTaskTest extends JSR1
28		return new TestSuite(FutureTaskTest.class);
29		}
30
31	+	void checkIsDone(Future<?> f) {
32	+	assertTrue(f.isDone());
33	+	assertFalse(f.cancel(false));
34	+	assertFalse(f.cancel(true));
35	+	if (f instanceof PublicFutureTask) {
36	+	PublicFutureTask pf = (PublicFutureTask) f;
37	+	assertEquals(1, pf.doneCount());
38	+	assertFalse(pf.runAndReset());
39	+	assertEquals(1, pf.doneCount());
40	+	Object r = null; Object exInfo = null;
41	+	try {
42	+	r = f.get();
43	+	} catch (CancellationException t) {
44	+	exInfo = CancellationException.class;
45	+	} catch (ExecutionException t) {
46	+	exInfo = t.getCause();
47	+	} catch (Throwable t) {
48	+	threadUnexpectedException(t);
49	+	}
50	+
51	+	// Check that run and runAndReset have no effect.
52	+	int savedRunCount = pf.runCount();
53	+	pf.run();
54	+	pf.runAndReset();
55	+	assertEquals(savedRunCount, pf.runCount());
56	+	try {
57	+	assertSame(r, f.get());
58	+	} catch (CancellationException t) {
59	+	assertSame(exInfo, CancellationException.class);
60	+	} catch (ExecutionException t) {
61	+	assertSame(exInfo, t.getCause());
62	+	} catch (Throwable t) {
63	+	threadUnexpectedException(t);
64	+	}
65	+	assertTrue(f.isDone());
66	+	}
67	+	}
68	+
69		void checkNotDone(Future<?> f) {
70		assertFalse(f.isDone());
71		assertFalse(f.isCancelled());
72	+	if (f instanceof PublicFutureTask) {
73	+	PublicFutureTask pf = (PublicFutureTask) f;
74	+	assertEquals(0, pf.doneCount());
75	+	assertEquals(0, pf.setCount());
76	+	assertEquals(0, pf.setExceptionCount());
77	+	}
78	+	}
79	+
80	+	void checkIsRunning(Future<?> f) {
81	+	checkNotDone(f);
82	+	if (f instanceof FutureTask) {
83	+	FutureTask ft = (FutureTask<?>) f;
84	+	// Check that run methods do nothing
85	+	ft.run();
86	+	if (f instanceof PublicFutureTask) {
87	+	PublicFutureTask pf = (PublicFutureTask) f;
88	+	int savedRunCount = pf.runCount();
89	+	pf.run();
90	+	assertFalse(pf.runAndReset());
91	+	assertEquals(savedRunCount, pf.runCount());
92	+	}
93	+	checkNotDone(f);
94	+	}
95		}
96
97		<T> void checkCompletedNormally(Future<T> f, T expected) {
98	<	assertTrue(f.isDone());
98	>	checkIsDone(f);
99		assertFalse(f.isCancelled());
100
101		try {
#	Line 36 | Line 104 | public class FutureTaskTest extends JSR1
104		try {
105		assertSame(expected, f.get(5L, SECONDS));
106		} catch (Throwable fail) { threadUnexpectedException(fail); }
39	–
40	–	assertFalse(f.cancel(false));
41	–	assertFalse(f.cancel(true));
107		}
108
109		void checkCancelled(Future<?> f) {
110	<	assertTrue(f.isDone());
110	>	checkIsDone(f);
111		assertTrue(f.isCancelled());
112
113		try {
#	Line 56 | Line 121 | public class FutureTaskTest extends JSR1
121		shouldThrow();
122		} catch (CancellationException success) {
123		} catch (Throwable fail) { threadUnexpectedException(fail); }
124	+	}
125
126	<	assertFalse(f.cancel(false));
127	<	assertFalse(f.cancel(true));
126	>	void tryToConfuseDoneTask(PublicFutureTask pf) {
127	>	pf.set(new Object());
128	>	pf.setException(new Error());
129	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
130	>	pf.cancel(true);
131	>	}
132		}
133
134		void checkCompletedAbnormally(Future<?> f, Throwable t) {
135	<	assertTrue(f.isDone());
135	>	checkIsDone(f);
136		assertFalse(f.isCancelled());
137
138		try {
#	Line 78 | Line 148 | public class FutureTaskTest extends JSR1
148		} catch (ExecutionException success) {
149		assertSame(t, success.getCause());
150		} catch (Throwable fail) { threadUnexpectedException(fail); }
81	–
82	–	assertFalse(f.cancel(false));
83	–	assertFalse(f.cancel(true));
151		}
152
153		/**
154		* Subclass to expose protected methods
155		*/
156		static class PublicFutureTask extends FutureTask {
157	<	public PublicFutureTask(Callable r) { super(r); }
158	<	public boolean runAndReset() { return super.runAndReset(); }
159	<	public void set(Object x) { super.set(x); }
160	<	public void setException(Throwable t) { super.setException(t); }
157	>	private final AtomicInteger runCount;
158	>	private final AtomicInteger doneCount = new AtomicInteger(0);
159	>	private final AtomicInteger runAndResetCount = new AtomicInteger(0);
160	>	private final AtomicInteger setCount = new AtomicInteger(0);
161	>	private final AtomicInteger setExceptionCount = new AtomicInteger(0);
162	>	public int runCount() { return runCount.get(); }
163	>	public int doneCount() { return doneCount.get(); }
164	>	public int runAndResetCount() { return runAndResetCount.get(); }
165	>	public int setCount() { return setCount.get(); }
166	>	public int setExceptionCount() { return setExceptionCount.get(); }
167	>
168	>	PublicFutureTask(Runnable runnable) {
169	>	this(runnable, seven);
170	>	}
171	>	PublicFutureTask(Runnable runnable, Object result) {
172	>	this(runnable, result, new AtomicInteger(0));
173	>	}
174	>	private PublicFutureTask(final Runnable runnable, Object result,
175	>	final AtomicInteger runCount) {
176	>	super(new Runnable() {
177	>	public void run() {
178	>	runCount.getAndIncrement();
179	>	runnable.run();
180	>	}}, result);
181	>	this.runCount = runCount;
182	>	}
183	>	PublicFutureTask(Callable callable) {
184	>	this(callable, new AtomicInteger(0));
185	>	}
186	>	private PublicFutureTask(final Callable callable,
187	>	final AtomicInteger runCount) {
188	>	super(new Callable() {
189	>	public Object call() throws Exception {
190	>	runCount.getAndIncrement();
191	>	return callable.call();
192	>	}});
193	>	this.runCount = runCount;
194	>	}
195	>	@Override public void done() {
196	>	assertTrue(isDone());
197	>	doneCount.incrementAndGet();
198	>	super.done();
199	>	}
200	>	@Override public boolean runAndReset() {
201	>	runAndResetCount.incrementAndGet();
202	>	return super.runAndReset();
203	>	}
204	>	@Override public void set(Object x) {
205	>	setCount.incrementAndGet();
206	>	super.set(x);
207	>	}
208	>	@Override public void setException(Throwable t) {
209	>	setExceptionCount.incrementAndGet();
210	>	super.setException(t);
211	>	}
212	>	}
213	>
214	>	class Counter extends CheckedRunnable {
215	>	final AtomicInteger count = new AtomicInteger(0);
216	>	public int get() { return count.get(); }
217	>	public void realRun() {
218	>	count.getAndIncrement();
219	>	}
220		}
221
222		/**
223	<	* Creating a future with a null callable throws NPE
223	>	* creating a future with a null callable throws NullPointerException
224		*/
225		public void testConstructor() {
226		try {
227	<	FutureTask task = new FutureTask(null);
227	>	new FutureTask(null);
228		shouldThrow();
229		} catch (NullPointerException success) {}
230		}
231
232		/**
233	<	* creating a future with null runnable fails
233	>	* creating a future with null runnable throws NullPointerException
234		*/
235		public void testConstructor2() {
236		try {
237	<	FutureTask task = new FutureTask(null, Boolean.TRUE);
237	>	new FutureTask(null, Boolean.TRUE);
238		shouldThrow();
239		} catch (NullPointerException success) {}
240		}
#	Line 117 | Line 243 | public class FutureTaskTest extends JSR1
243		* isDone is true when a task completes
244		*/
245		public void testIsDone() {
246	<	FutureTask task = new FutureTask(new NoOpCallable());
246	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
247	>	assertFalse(task.isDone());
248		task.run();
249		assertTrue(task.isDone());
250		checkCompletedNormally(task, Boolean.TRUE);
251	+	assertEquals(1, task.runCount());
252		}
253
254		/**
#	Line 128 | Line 256 | public class FutureTaskTest extends JSR1
256		*/
257		public void testRunAndReset() {
258		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
259	<	assertTrue(task.runAndReset());
260	<	checkNotDone(task);
259	>	for (int i = 0; i < 3; i++) {
260	>	assertTrue(task.runAndReset());
261	>	checkNotDone(task);
262	>	assertEquals(i+1, task.runCount());
263	>	assertEquals(i+1, task.runAndResetCount());
264	>	assertEquals(0, task.setCount());
265	>	assertEquals(0, task.setExceptionCount());
266	>	}
267		}
268
269		/**
270		* runAndReset after cancellation fails
271		*/
272	<	public void testResetAfterCancel() {
273	<	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
274	<	assertTrue(task.cancel(false));
275	<	assertFalse(task.runAndReset());
276	<	checkCancelled(task);
272	>	public void testRunAndResetAfterCancel() {
273	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
274	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
275	>	assertTrue(task.cancel(mayInterruptIfRunning));
276	>	for (int i = 0; i < 3; i++) {
277	>	assertFalse(task.runAndReset());
278	>	assertEquals(0, task.runCount());
279	>	assertEquals(i+1, task.runAndResetCount());
280	>	assertEquals(0, task.setCount());
281	>	assertEquals(0, task.setExceptionCount());
282	>	}
283	>	tryToConfuseDoneTask(task);
284	>	checkCancelled(task);
285	>	}
286		}
287
145	–
288		/**
289		* setting value causes get to return it
290		*/
291		public void testSet() throws Exception {
292		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
293		task.set(one);
294	<	assertSame(task.get(), one);
294	>	for (int i = 0; i < 3; i++) {
295	>	assertSame(one, task.get());
296	>	assertSame(one, task.get(LONG_DELAY_MS, MILLISECONDS));
297	>	assertEquals(1, task.setCount());
298	>	}
299	>	tryToConfuseDoneTask(task);
300		checkCompletedNormally(task, one);
301	+	assertEquals(0, task.runCount());
302		}
303
304		/**
305		* setException causes get to throw ExecutionException
306		*/
307	<	public void testSetException() throws Exception {
307	>	public void testSetException_get() throws Exception {
308		Exception nse = new NoSuchElementException();
309		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
310		task.setException(nse);
311	+
312		try {
313	<	Object x = task.get();
313	>	task.get();
314		shouldThrow();
315		} catch (ExecutionException success) {
316	<	assertSame(success.getCause(), nse);
316	>	assertSame(nse, success.getCause());
317		checkCompletedAbnormally(task, nse);
318		}
319	+
320	+	try {
321	+	task.get(LONG_DELAY_MS, MILLISECONDS);
322	+	shouldThrow();
323	+	} catch (ExecutionException success) {
324	+	assertSame(nse, success.getCause());
325	+	checkCompletedAbnormally(task, nse);
326	+	}
327	+
328	+	assertEquals(1, task.setExceptionCount());
329	+	assertEquals(0, task.setCount());
330	+	tryToConfuseDoneTask(task);
331	+	checkCompletedAbnormally(task, nse);
332	+	assertEquals(0, task.runCount());
333		}
334
335		/**
336	<	* Cancelling before running succeeds
336	>	* cancel(false) before run succeeds
337		*/
338		public void testCancelBeforeRun() {
339	<	FutureTask task = new FutureTask(new NoOpCallable());
339	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
340		assertTrue(task.cancel(false));
341		task.run();
342	+	assertEquals(0, task.runCount());
343	+	assertEquals(0, task.setCount());
344	+	assertEquals(0, task.setExceptionCount());
345	+	assertTrue(task.isCancelled());
346	+	assertTrue(task.isDone());
347	+	tryToConfuseDoneTask(task);
348	+	assertEquals(0, task.runCount());
349		checkCancelled(task);
350		}
351
352		/**
353	<	* Cancel(true) before run succeeds
353	>	* cancel(true) before run succeeds
354		*/
355		public void testCancelBeforeRun2() {
356	<	FutureTask task = new FutureTask(new NoOpCallable());
356	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
357		assertTrue(task.cancel(true));
358		task.run();
359	+	assertEquals(0, task.runCount());
360	+	assertEquals(0, task.setCount());
361	+	assertEquals(0, task.setExceptionCount());
362	+	assertTrue(task.isCancelled());
363	+	assertTrue(task.isDone());
364	+	tryToConfuseDoneTask(task);
365	+	assertEquals(0, task.runCount());
366		checkCancelled(task);
367		}
368
369		/**
370	<	* cancel of a completed task fails
370	>	* cancel(false) of a completed task fails
371		*/
372		public void testCancelAfterRun() {
373	<	FutureTask task = new FutureTask(new NoOpCallable());
373	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
374		task.run();
375		assertFalse(task.cancel(false));
376	+	assertEquals(1, task.runCount());
377	+	assertEquals(1, task.setCount());
378	+	assertEquals(0, task.setExceptionCount());
379	+	tryToConfuseDoneTask(task);
380		checkCompletedNormally(task, Boolean.TRUE);
381	+	assertEquals(1, task.runCount());
382		}
383
384		/**
385	<	* cancel(true) interrupts a running task
385	>	* cancel(true) of a completed task fails
386		*/
387	<	public void testCancelInterrupt() throws InterruptedException {
388	<	final CountDownLatch threadStarted = new CountDownLatch(1);
389	<	final FutureTask task =
390	<	new FutureTask(new CheckedCallable<Object>() {
391	<	public Object realCall() {
392	<	threadStarted.countDown();
393	<	long t0 = System.nanoTime();
394	<	for (;;) {
395	<	if (Thread.interrupted())
396	<	return Boolean.TRUE;
397	<	if (millisElapsedSince(t0) > MEDIUM_DELAY_MS)
398	<	fail("interrupt not delivered");
399	<	Thread.yield();
400	<	}
387	>	public void testCancelAfterRun2() {
388	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
389	>	task.run();
390	>	assertFalse(task.cancel(true));
391	>	assertEquals(1, task.runCount());
392	>	assertEquals(1, task.setCount());
393	>	assertEquals(0, task.setExceptionCount());
394	>	tryToConfuseDoneTask(task);
395	>	checkCompletedNormally(task, Boolean.TRUE);
396	>	assertEquals(1, task.runCount());
397	>	}
398	>
399	>	/**
400	>	* cancel(true) interrupts a running task that subsequently succeeds
401	>	*/
402	>	public void testCancelInterrupt() {
403	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
404	>	final PublicFutureTask task =
405	>	new PublicFutureTask(new CheckedRunnable() {
406	>	public void realRun() {
407	>	pleaseCancel.countDown();
408	>	try {
409	>	delay(LONG_DELAY_MS);
410	>	shouldThrow();
411	>	} catch (InterruptedException success) {}
412		}});
413
414		Thread t = newStartedThread(task);
415	<	threadStarted.await();
415	>	await(pleaseCancel);
416		assertTrue(task.cancel(true));
417	<	checkCancelled(task);
418	<	awaitTermination(t, MEDIUM_DELAY_MS);
417	>	assertTrue(task.isCancelled());
418	>	assertTrue(task.isDone());
419	>	awaitTermination(t);
420	>	assertEquals(1, task.runCount());
421	>	assertEquals(1, task.setCount());
422	>	assertEquals(0, task.setExceptionCount());
423	>	tryToConfuseDoneTask(task);
424		checkCancelled(task);
425		}
426
427		/**
428	<	* cancel(false) does not interrupt a running task
428	>	* cancel(true) tries to interrupt a running task, but
429	>	* Thread.interrupt throws (simulating a restrictive security
430	>	* manager)
431		*/
432	<	public void testCancelNoInterrupt() throws InterruptedException {
433	<	final CountDownLatch threadStarted = new CountDownLatch(1);
432	>	public void testCancelInterrupt_ThrowsSecurityException() {
433	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
434		final CountDownLatch cancelled = new CountDownLatch(1);
435	<	final FutureTask<Boolean> task =
436	<	new FutureTask<Boolean>(new CheckedCallable<Boolean>() {
437	<	public Boolean realCall() throws InterruptedException {
438	<	threadStarted.countDown();
439	<	cancelled.await(MEDIUM_DELAY_MS, MILLISECONDS);
435	>	final PublicFutureTask task =
436	>	new PublicFutureTask(new CheckedRunnable() {
437	>	public void realRun() {
438	>	pleaseCancel.countDown();
439	>	await(cancelled);
440		assertFalse(Thread.interrupted());
241	–	return Boolean.TRUE;
441		}});
442
443	<	Thread t = newStartedThread(task);
444	<	threadStarted.await();
445	<	assertTrue(task.cancel(false));
446	<	checkCancelled(task);
443	>	final Thread t = new Thread(task) {
444	>	// Simulate a restrictive security manager.
445	>	@Override public void interrupt() {
446	>	throw new SecurityException();
447	>	}};
448	>	t.setDaemon(true);
449	>	t.start();
450	>
451	>	await(pleaseCancel);
452	>	try {
453	>	task.cancel(true);
454	>	shouldThrow();
455	>	} catch (SecurityException expected) {}
456	>
457	>	// We failed to deliver the interrupt, but the world retains
458	>	// its sanity, as if we had done task.cancel(false)
459	>	assertTrue(task.isCancelled());
460	>	assertTrue(task.isDone());
461	>	assertEquals(1, task.runCount());
462	>	assertEquals(1, task.doneCount());
463	>	assertEquals(0, task.setCount());
464	>	assertEquals(0, task.setExceptionCount());
465		cancelled.countDown();
466	<	awaitTermination(t, MEDIUM_DELAY_MS);
466	>	awaitTermination(t);
467	>	assertEquals(1, task.setCount());
468	>	assertEquals(0, task.setExceptionCount());
469	>	tryToConfuseDoneTask(task);
470		checkCancelled(task);
471		}
472
473		/**
474	<	* run in one thread causes get in another thread to retrieve value
474	>	* cancel(true) interrupts a running task that subsequently throws
475		*/
476	<	public void testGetRun() throws InterruptedException {
477	<	final CountDownLatch threadStarted = new CountDownLatch(1);
478	<
479	<	final FutureTask task =
480	<	new FutureTask(new CheckedCallable<Object>() {
481	<	public Object realCall() throws InterruptedException {
482	<	return Boolean.TRUE;
476	>	public void testCancelInterrupt_taskFails() {
477	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
478	>	final PublicFutureTask task =
479	>	new PublicFutureTask(new Runnable() {
480	>	public void run() {
481	>	try {
482	>	pleaseCancel.countDown();
483	>	delay(LONG_DELAY_MS);
484	>	shouldThrow();
485	>	} catch (Throwable t) {
486	>	assertTrue(t instanceof InterruptedException);
487	>	}
488	>	throw new RuntimeException();
489		}});
490
491	<	Thread t = newStartedThread(new CheckedRunnable() {
492	<	public void realRun() throws Exception {
493	<	threadStarted.countDown();
494	<	assertSame(Boolean.TRUE, task.get());
495	<	}});
496	<
497	<	threadStarted.await();
498	<	checkNotDone(task);
499	<	assertTrue(t.isAlive());
500	<	task.run();
275	<	checkCompletedNormally(task, Boolean.TRUE);
276	<	awaitTermination(t, MEDIUM_DELAY_MS);
491	>	Thread t = newStartedThread(task);
492	>	await(pleaseCancel);
493	>	assertTrue(task.cancel(true));
494	>	assertTrue(task.isCancelled());
495	>	awaitTermination(t);
496	>	assertEquals(1, task.runCount());
497	>	assertEquals(0, task.setCount());
498	>	assertEquals(1, task.setExceptionCount());
499	>	tryToConfuseDoneTask(task);
500	>	checkCancelled(task);
501		}
502
503		/**
504	<	* set in one thread causes get in another thread to retrieve value
504	>	* cancel(false) does not interrupt a running task
505		*/
506	<	public void testGetSet() throws InterruptedException {
507	<	final CountDownLatch threadStarted = new CountDownLatch(1);
508	<
506	>	public void testCancelNoInterrupt() {
507	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
508	>	final CountDownLatch cancelled = new CountDownLatch(1);
509		final PublicFutureTask task =
510	<	new PublicFutureTask(new CheckedCallable<Object>() {
511	<	public Object realCall() throws InterruptedException {
510	>	new PublicFutureTask(new CheckedCallable<Boolean>() {
511	>	public Boolean realCall() {
512	>	pleaseCancel.countDown();
513	>	await(cancelled);
514	>	assertFalse(Thread.interrupted());
515		return Boolean.TRUE;
516		}});
517
518	<	Thread t = newStartedThread(new CheckedRunnable() {
519	<	public void realRun() throws Exception {
520	<	threadStarted.countDown();
521	<	assertSame(Boolean.FALSE, task.get());
522	<	}});
523	<
524	<	threadStarted.await();
525	<	checkNotDone(task);
526	<	assertTrue(t.isAlive());
527	<	task.set(Boolean.FALSE);
528	<	checkCompletedNormally(task, Boolean.FALSE);
302	<	awaitTermination(t, MEDIUM_DELAY_MS);
518	>	Thread t = newStartedThread(task);
519	>	await(pleaseCancel);
520	>	assertTrue(task.cancel(false));
521	>	assertTrue(task.isCancelled());
522	>	cancelled.countDown();
523	>	awaitTermination(t);
524	>	assertEquals(1, task.runCount());
525	>	assertEquals(1, task.setCount());
526	>	assertEquals(0, task.setExceptionCount());
527	>	tryToConfuseDoneTask(task);
528	>	checkCancelled(task);
529		}
530
531		/**
532	<	* run in one thread causes timed get in another thread to retrieve value
532	>	* run in one thread causes get in another thread to retrieve value
533		*/
534	<	public void testTimedGetRun() throws InterruptedException {
535	<	final CountDownLatch threadStarted = new CountDownLatch(1);
534	>	public void testGetRun() {
535	>	final CountDownLatch pleaseRun = new CountDownLatch(2);
536
537	<	final FutureTask task =
538	<	new FutureTask(new CheckedCallable<Object>() {
539	<	public Object realCall() throws InterruptedException {
540	<	return Boolean.TRUE;
537	>	final PublicFutureTask task =
538	>	new PublicFutureTask(new CheckedCallable<Object>() {
539	>	public Object realCall() {
540	>	return two;
541		}});
542
543	<	Thread t = newStartedThread(new CheckedRunnable() {
543	>	Thread t1 = newStartedThread(new CheckedRunnable() {
544		public void realRun() throws Exception {
545	<	threadStarted.countDown();
546	<	assertSame(Boolean.TRUE,
321	<	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
545	>	pleaseRun.countDown();
546	>	assertSame(two, task.get());
547		}});
548
549	<	threadStarted.await();
549	>	Thread t2 = newStartedThread(new CheckedRunnable() {
550	>	public void realRun() throws Exception {
551	>	pleaseRun.countDown();
552	>	assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS));
553	>	}});
554	>
555	>	await(pleaseRun);
556		checkNotDone(task);
557	<	assertTrue(t.isAlive());
557	>	assertTrue(t1.isAlive());
558	>	assertTrue(t2.isAlive());
559		task.run();
560	<	checkCompletedNormally(task, Boolean.TRUE);
561	<	awaitTermination(t, MEDIUM_DELAY_MS);
560	>	checkCompletedNormally(task, two);
561	>	assertEquals(1, task.runCount());
562	>	assertEquals(1, task.setCount());
563	>	assertEquals(0, task.setExceptionCount());
564	>	awaitTermination(t1);
565	>	awaitTermination(t2);
566	>	tryToConfuseDoneTask(task);
567	>	checkCompletedNormally(task, two);
568		}
569
570		/**
571	<	* set in one thread causes timed get in another thread to retrieve value
571	>	* set in one thread causes get in another thread to retrieve value
572		*/
573	<	public void testTimedGetSet() throws InterruptedException {
574	<	final CountDownLatch threadStarted = new CountDownLatch(1);
573	>	public void testGetSet() {
574	>	final CountDownLatch pleaseSet = new CountDownLatch(2);
575
576		final PublicFutureTask task =
577		new PublicFutureTask(new CheckedCallable<Object>() {
578		public Object realCall() throws InterruptedException {
579	<	return Boolean.TRUE;
579	>	return two;
580		}});
581
582	<	Thread t = newStartedThread(new CheckedRunnable() {
582	>	Thread t1 = newStartedThread(new CheckedRunnable() {
583		public void realRun() throws Exception {
584	<	threadStarted.countDown();
585	<	assertSame(Boolean.FALSE,
348	<	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
584	>	pleaseSet.countDown();
585	>	assertSame(two, task.get());
586		}});
587
588	<	threadStarted.await();
588	>	Thread t2 = newStartedThread(new CheckedRunnable() {
589	>	public void realRun() throws Exception {
590	>	pleaseSet.countDown();
591	>	assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS));
592	>	}});
593	>
594	>	await(pleaseSet);
595		checkNotDone(task);
596	<	assertTrue(t.isAlive());
597	<	task.set(Boolean.FALSE);
598	<	checkCompletedNormally(task, Boolean.FALSE);
599	<	awaitTermination(t, MEDIUM_DELAY_MS);
596	>	assertTrue(t1.isAlive());
597	>	assertTrue(t2.isAlive());
598	>	task.set(two);
599	>	assertEquals(0, task.runCount());
600	>	assertEquals(1, task.setCount());
601	>	assertEquals(0, task.setExceptionCount());
602	>	tryToConfuseDoneTask(task);
603	>	checkCompletedNormally(task, two);
604	>	awaitTermination(t1);
605	>	awaitTermination(t2);
606		}
607
608		/**
609		* Cancelling a task causes timed get in another thread to throw
610		* CancellationException
611		*/
612	<	public void testTimedGet_Cancellation() throws InterruptedException {
613	<	final CountDownLatch threadStarted = new CountDownLatch(2);
365	<	final FutureTask task =
366	<	new FutureTask(new CheckedInterruptedCallable<Object>() {
367	<	public Object realCall() throws InterruptedException {
368	<	threadStarted.countDown();
369	<	delay(LONG_DELAY_MS);
370	<	return Boolean.TRUE;
371	<	}});
372	<
373	<	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
374	<	public void realRun() throws Exception {
375	<	threadStarted.countDown();
376	<	task.get(MEDIUM_DELAY_MS, MILLISECONDS);
377	<	}};
378	<	Thread t2 = new Thread(task);
379	<	t1.start();
380	<	t2.start();
381	<	threadStarted.await();
382	<	task.cancel(true);
383	<	awaitTermination(t1, MEDIUM_DELAY_MS);
384	<	awaitTermination(t2, MEDIUM_DELAY_MS);
385	<	checkCancelled(task);
612	>	public void testTimedGet_Cancellation() {
613	>	testTimedGet_Cancellation(false);
614		}
615	<
616	<	/**
617	<	* Cancelling a task causes get in another thread to throw
618	<	* CancellationException
619	<	*/
620	<	public void testGet_Cancellation() throws InterruptedException {
621	<	final CountDownLatch threadStarted = new CountDownLatch(2);
622	<	final FutureTask task =
623	<	new FutureTask(new CheckedInterruptedCallable<Object>() {
624	<	public Object realCall() throws InterruptedException {
625	<	threadStarted.countDown();
626	<	delay(LONG_DELAY_MS);
627	<	return Boolean.TRUE;
628	<	}});
615	>	public void testTimedGet_Cancellation_interrupt() {
616	>	testTimedGet_Cancellation(true);
617	>	}
618	>	public void testTimedGet_Cancellation(final boolean mayInterruptIfRunning) {
619	>	final CountDownLatch pleaseCancel = new CountDownLatch(3);
620	>	final CountDownLatch cancelled = new CountDownLatch(1);
621	>	final Callable<Object> callable =
622	>	new CheckedCallable<Object>() {
623	>	public Object realCall() throws InterruptedException {
624	>	pleaseCancel.countDown();
625	>	if (mayInterruptIfRunning) {
626	>	try {
627	>	delay(2*LONG_DELAY_MS);
628	>	} catch (InterruptedException success) {}
629	>	} else {
630	>	await(cancelled);
631	>	}
632	>	return two;
633	>	}};
634	>	final PublicFutureTask task = new PublicFutureTask(callable);
635
636		Thread t1 = new ThreadShouldThrow(CancellationException.class) {
637	<	public void realRun() throws Exception {
638	<	threadStarted.countDown();
639	<	task.get();
640	<	}};
641	<	Thread t2 = new Thread(task);
637	>	public void realRun() throws Exception {
638	>	pleaseCancel.countDown();
639	>	task.get();
640	>	}};
641	>	Thread t2 = new ThreadShouldThrow(CancellationException.class) {
642	>	public void realRun() throws Exception {
643	>	pleaseCancel.countDown();
644	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
645	>	}};
646		t1.start();
647		t2.start();
648	<	threadStarted.await();
649	<	task.cancel(true);
650	<	awaitTermination(t1, MEDIUM_DELAY_MS);
651	<	awaitTermination(t2, MEDIUM_DELAY_MS);
648	>	Thread t3 = newStartedThread(task);
649	>	await(pleaseCancel);
650	>	checkIsRunning(task);
651	>	task.cancel(mayInterruptIfRunning);
652	>	checkCancelled(task);
653	>	awaitTermination(t1);
654	>	awaitTermination(t2);
655	>	cancelled.countDown();
656	>	awaitTermination(t3);
657	>	assertEquals(1, task.runCount());
658	>	assertEquals(1, task.setCount());
659	>	assertEquals(0, task.setExceptionCount());
660	>	tryToConfuseDoneTask(task);
661		checkCancelled(task);
662		}
663
417	–
664		/**
665		* A runtime exception in task causes get to throw ExecutionException
666		*/
667		public void testGet_ExecutionException() throws InterruptedException {
668	<	final FutureTask task = new FutureTask(new Callable() {
668	>	final ArithmeticException e = new ArithmeticException();
669	>	final PublicFutureTask task = new PublicFutureTask(new Callable() {
670		public Object call() {
671	<	return 5/0;
671	>	throw e;
672		}});
673
674		task.run();
675	+	assertEquals(1, task.runCount());
676	+	assertEquals(0, task.setCount());
677	+	assertEquals(1, task.setExceptionCount());
678		try {
679		task.get();
680		shouldThrow();
681		} catch (ExecutionException success) {
682	<	assertTrue(success.getCause() instanceof ArithmeticException);
682	>	assertSame(e, success.getCause());
683	>	tryToConfuseDoneTask(task);
684		checkCompletedAbnormally(task, success.getCause());
685		}
686		}
#	Line 438 | Line 689 | public class FutureTaskTest extends JSR1
689		* A runtime exception in task causes timed get to throw ExecutionException
690		*/
691		public void testTimedGet_ExecutionException2() throws Exception {
692	<	final FutureTask task = new FutureTask(new Callable() {
692	>	final ArithmeticException e = new ArithmeticException();
693	>	final PublicFutureTask task = new PublicFutureTask(new Callable() {
694		public Object call() {
695	<	return 5/0;
695	>	throw e;
696		}});
697
698		task.run();
699		try {
700	<	task.get(SHORT_DELAY_MS, MILLISECONDS);
700	>	task.get(LONG_DELAY_MS, MILLISECONDS);
701		shouldThrow();
702		} catch (ExecutionException success) {
703	<	assertTrue(success.getCause() instanceof ArithmeticException);
703	>	assertSame(e, success.getCause());
704	>	tryToConfuseDoneTask(task);
705		checkCompletedAbnormally(task, success.getCause());
706		}
707		}
708
456	–
709		/**
710	<	* Interrupting a waiting get causes it to throw InterruptedException
710	>	* get is interruptible
711		*/
712	<	public void testGet_InterruptedException() throws InterruptedException {
713	<	final CountDownLatch threadStarted = new CountDownLatch(1);
712	>	public void testGet_interruptible() {
713	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
714		final FutureTask task = new FutureTask(new NoOpCallable());
715	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
715	>	Thread t = newStartedThread(new CheckedRunnable() {
716		public void realRun() throws Exception {
717	<	threadStarted.countDown();
718	<	task.get();
717	>	Thread.currentThread().interrupt();
718	>	try {
719	>	task.get();
720	>	shouldThrow();
721	>	} catch (InterruptedException success) {}
722	>	assertFalse(Thread.interrupted());
723	>
724	>	pleaseInterrupt.countDown();
725	>	try {
726	>	task.get();
727	>	shouldThrow();
728	>	} catch (InterruptedException success) {}
729	>	assertFalse(Thread.interrupted());
730		}});
731
732	<	threadStarted.await();
732	>	await(pleaseInterrupt);
733		t.interrupt();
734	<	awaitTermination(t, MEDIUM_DELAY_MS);
734	>	awaitTermination(t);
735		checkNotDone(task);
736		}
737
738		/**
739	<	* Interrupting a waiting timed get causes it to throw InterruptedException
739	>	* timed get is interruptible
740		*/
741	<	public void testTimedGet_InterruptedException2() throws InterruptedException {
742	<	final CountDownLatch threadStarted = new CountDownLatch(1);
741	>	public void testTimedGet_interruptible() {
742	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
743		final FutureTask task = new FutureTask(new NoOpCallable());
744	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
744	>	Thread t = newStartedThread(new CheckedRunnable() {
745		public void realRun() throws Exception {
746	<	threadStarted.countDown();
747	<	task.get(LONG_DELAY_MS, MILLISECONDS);
746	>	Thread.currentThread().interrupt();
747	>	try {
748	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
749	>	shouldThrow();
750	>	} catch (InterruptedException success) {}
751	>	assertFalse(Thread.interrupted());
752	>
753	>	pleaseInterrupt.countDown();
754	>	try {
755	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
756	>	shouldThrow();
757	>	} catch (InterruptedException success) {}
758	>	assertFalse(Thread.interrupted());
759		}});
760
761	<	threadStarted.await();
761	>	await(pleaseInterrupt);
762		t.interrupt();
763	<	awaitTermination(t, MEDIUM_DELAY_MS);
763	>	awaitTermination(t);
764		checkNotDone(task);
765		}
766
#	Line 494 | Line 768 | public class FutureTaskTest extends JSR1
768		* A timed out timed get throws TimeoutException
769		*/
770		public void testGet_TimeoutException() throws Exception {
771	+	FutureTask task = new FutureTask(new NoOpCallable());
772	+	long startTime = System.nanoTime();
773		try {
774	<	FutureTask task = new FutureTask(new NoOpCallable());
499	<	task.get(1, MILLISECONDS);
774	>	task.get(timeoutMillis(), MILLISECONDS);
775		shouldThrow();
776	<	} catch (TimeoutException success) {}
776	>	} catch (TimeoutException success) {
777	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
778	>	}
779	>	}
780	>
781	>	/**
782	>	* timed get with null TimeUnit throws NullPointerException
783	>	*/
784	>	public void testGet_NullTimeUnit() throws Exception {
785	>	FutureTask task = new FutureTask(new NoOpCallable());
786	>	long[] timeouts = { Long.MIN_VALUE, 0L, Long.MAX_VALUE };
787	>
788	>	for (long timeout : timeouts) {
789	>	try {
790	>	task.get(timeout, null);
791	>	shouldThrow();
792	>	} catch (NullPointerException success) {}
793	>	}
794	>
795	>	task.run();
796	>
797	>	for (long timeout : timeouts) {
798	>	try {
799	>	task.get(timeout, null);
800	>	shouldThrow();
801	>	} catch (NullPointerException success) {}
802	>	}
803		}
804
805		}

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