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/publicdomain/zero/1.0/ |
5 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
* Pat Fisher, Mike Judd. |
7 |
*/ |
8 |
|
9 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
|
11 |
import java.security.PrivilegedAction; |
12 |
import java.security.PrivilegedExceptionAction; |
13 |
import java.util.ArrayList; |
14 |
import java.util.Collection; |
15 |
import java.util.Collections; |
16 |
import java.util.List; |
17 |
import java.util.concurrent.AbstractExecutorService; |
18 |
import java.util.concurrent.ArrayBlockingQueue; |
19 |
import java.util.concurrent.Callable; |
20 |
import java.util.concurrent.CancellationException; |
21 |
import java.util.concurrent.CountDownLatch; |
22 |
import java.util.concurrent.ExecutionException; |
23 |
import java.util.concurrent.Executors; |
24 |
import java.util.concurrent.ExecutorService; |
25 |
import java.util.concurrent.Future; |
26 |
import java.util.concurrent.ThreadPoolExecutor; |
27 |
import java.util.concurrent.TimeUnit; |
28 |
import java.util.concurrent.atomic.AtomicBoolean; |
29 |
|
30 |
import junit.framework.Test; |
31 |
import junit.framework.TestSuite; |
32 |
|
33 |
public class AbstractExecutorServiceTest extends JSR166TestCase { |
34 |
public static void main(String[] args) { |
35 |
main(suite(), args); |
36 |
} |
37 |
public static Test suite() { |
38 |
return new TestSuite(AbstractExecutorServiceTest.class); |
39 |
} |
40 |
|
41 |
/** |
42 |
* A no-frills implementation of AbstractExecutorService, designed |
43 |
* to test the submit methods only. |
44 |
*/ |
45 |
static class DirectExecutorService extends AbstractExecutorService { |
46 |
public void execute(Runnable r) { r.run(); } |
47 |
public void shutdown() { shutdown = true; } |
48 |
public List<Runnable> shutdownNow() { |
49 |
shutdown = true; |
50 |
return Collections.emptyList(); |
51 |
} |
52 |
public boolean isShutdown() { return shutdown; } |
53 |
public boolean isTerminated() { return isShutdown(); } |
54 |
public boolean awaitTermination(long timeout, TimeUnit unit) { |
55 |
return isShutdown(); |
56 |
} |
57 |
private volatile boolean shutdown = false; |
58 |
} |
59 |
|
60 |
/** |
61 |
* execute(runnable) runs it to completion |
62 |
*/ |
63 |
public void testExecuteRunnable() throws Exception { |
64 |
ExecutorService e = new DirectExecutorService(); |
65 |
final AtomicBoolean done = new AtomicBoolean(false); |
66 |
Future<?> future = e.submit(new CheckedRunnable() { |
67 |
public void realRun() { |
68 |
done.set(true); |
69 |
}}); |
70 |
assertNull(future.get()); |
71 |
assertNull(future.get(0, MILLISECONDS)); |
72 |
assertTrue(done.get()); |
73 |
assertTrue(future.isDone()); |
74 |
assertFalse(future.isCancelled()); |
75 |
} |
76 |
|
77 |
/** |
78 |
* Completed submit(callable) returns result |
79 |
*/ |
80 |
public void testSubmitCallable() throws Exception { |
81 |
ExecutorService e = new DirectExecutorService(); |
82 |
Future<String> future = e.submit(new StringTask()); |
83 |
String result = future.get(); |
84 |
assertSame(TEST_STRING, result); |
85 |
} |
86 |
|
87 |
/** |
88 |
* Completed submit(runnable) returns successfully |
89 |
*/ |
90 |
public void testSubmitRunnable() throws Exception { |
91 |
ExecutorService e = new DirectExecutorService(); |
92 |
Future<?> future = e.submit(new NoOpRunnable()); |
93 |
future.get(); |
94 |
assertTrue(future.isDone()); |
95 |
} |
96 |
|
97 |
/** |
98 |
* Completed submit(runnable, result) returns result |
99 |
*/ |
100 |
public void testSubmitRunnable2() throws Exception { |
101 |
ExecutorService e = new DirectExecutorService(); |
102 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
103 |
String result = future.get(); |
104 |
assertSame(TEST_STRING, result); |
105 |
} |
106 |
|
107 |
/** |
108 |
* A submitted privileged action runs to completion |
109 |
*/ |
110 |
public void testSubmitPrivilegedAction() throws Exception { |
111 |
Runnable r = new CheckedRunnable() { |
112 |
public void realRun() throws Exception { |
113 |
ExecutorService e = new DirectExecutorService(); |
114 |
Future<?> future = e.submit(Executors.callable(new PrivilegedAction<Object>() { |
115 |
public Object run() { |
116 |
return TEST_STRING; |
117 |
}})); |
118 |
|
119 |
assertSame(TEST_STRING, future.get()); |
120 |
}}; |
121 |
|
122 |
runWithPermissions(r, |
123 |
new RuntimePermission("getClassLoader"), |
124 |
new RuntimePermission("setContextClassLoader"), |
125 |
new RuntimePermission("modifyThread")); |
126 |
} |
127 |
|
128 |
/** |
129 |
* A submitted privileged exception action runs to completion |
130 |
*/ |
131 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
132 |
Runnable r = new CheckedRunnable() { |
133 |
public void realRun() throws Exception { |
134 |
ExecutorService e = new DirectExecutorService(); |
135 |
Future<?> future = e.submit(Executors.callable(new PrivilegedExceptionAction<Object>() { |
136 |
public Object run() { |
137 |
return TEST_STRING; |
138 |
}})); |
139 |
|
140 |
assertSame(TEST_STRING, future.get()); |
141 |
}}; |
142 |
|
143 |
runWithPermissions(r); |
144 |
} |
145 |
|
146 |
/** |
147 |
* A submitted failed privileged exception action reports exception |
148 |
*/ |
149 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
150 |
Runnable r = new CheckedRunnable() { |
151 |
public void realRun() throws Exception { |
152 |
ExecutorService e = new DirectExecutorService(); |
153 |
Future<?> future = e.submit(Executors.callable(new PrivilegedExceptionAction<Object>() { |
154 |
public Object run() throws Exception { |
155 |
throw new IndexOutOfBoundsException(); |
156 |
}})); |
157 |
|
158 |
try { |
159 |
future.get(); |
160 |
shouldThrow(); |
161 |
} catch (ExecutionException success) { |
162 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
163 |
}}}; |
164 |
|
165 |
runWithPermissions(r); |
166 |
} |
167 |
|
168 |
/** |
169 |
* Submitting null tasks throws NullPointerException |
170 |
*/ |
171 |
public void testNullTaskSubmission() { |
172 |
final ExecutorService e = new DirectExecutorService(); |
173 |
try (PoolCleaner cleaner = cleaner(e)) { |
174 |
assertNullTaskSubmissionThrowsNullPointerException(e); |
175 |
} |
176 |
} |
177 |
|
178 |
/** |
179 |
* submit(callable).get() throws InterruptedException if interrupted |
180 |
*/ |
181 |
public void testInterruptedSubmit() throws InterruptedException { |
182 |
final CountDownLatch submitted = new CountDownLatch(1); |
183 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
184 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
185 |
public Void realCall() throws InterruptedException { |
186 |
assertTrue(quittingTime.await(2*LONG_DELAY_MS, MILLISECONDS)); |
187 |
return null; |
188 |
}}; |
189 |
final ExecutorService p |
190 |
= new ThreadPoolExecutor(1,1,60, TimeUnit.SECONDS, |
191 |
new ArrayBlockingQueue<Runnable>(10)); |
192 |
try (PoolCleaner cleaner = cleaner(p, quittingTime)) { |
193 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
194 |
public void realRun() throws Exception { |
195 |
Future<Void> future = p.submit(awaiter); |
196 |
submitted.countDown(); |
197 |
future.get(); |
198 |
}}); |
199 |
|
200 |
await(submitted); |
201 |
t.interrupt(); |
202 |
awaitTermination(t); |
203 |
} |
204 |
} |
205 |
|
206 |
/** |
207 |
* get of submit(callable) throws ExecutionException if callable |
208 |
* throws exception |
209 |
*/ |
210 |
public void testSubmitEE() throws InterruptedException { |
211 |
final ThreadPoolExecutor p = |
212 |
new ThreadPoolExecutor(1, 1, |
213 |
60, TimeUnit.SECONDS, |
214 |
new ArrayBlockingQueue<Runnable>(10)); |
215 |
try (PoolCleaner cleaner = cleaner(p)) { |
216 |
Callable<Object> c = new Callable<Object>() { |
217 |
public Object call() { throw new ArithmeticException(); }}; |
218 |
try { |
219 |
p.submit(c).get(); |
220 |
shouldThrow(); |
221 |
} catch (ExecutionException success) { |
222 |
assertTrue(success.getCause() instanceof ArithmeticException); |
223 |
} |
224 |
} |
225 |
} |
226 |
|
227 |
/** |
228 |
* invokeAny(null) throws NPE |
229 |
*/ |
230 |
public void testInvokeAny1() throws Exception { |
231 |
final ExecutorService e = new DirectExecutorService(); |
232 |
try (PoolCleaner cleaner = cleaner(e)) { |
233 |
try { |
234 |
e.invokeAny(null); |
235 |
shouldThrow(); |
236 |
} catch (NullPointerException success) {} |
237 |
} |
238 |
} |
239 |
|
240 |
/** |
241 |
* invokeAny(empty collection) throws IllegalArgumentException |
242 |
*/ |
243 |
public void testInvokeAny2() throws Exception { |
244 |
final ExecutorService e = new DirectExecutorService(); |
245 |
final Collection<Callable<String>> emptyCollection |
246 |
= Collections.emptyList(); |
247 |
try (PoolCleaner cleaner = cleaner(e)) { |
248 |
try { |
249 |
e.invokeAny(emptyCollection); |
250 |
shouldThrow(); |
251 |
} catch (IllegalArgumentException success) {} |
252 |
} |
253 |
} |
254 |
|
255 |
/** |
256 |
* invokeAny(c) throws NPE if c has null elements |
257 |
*/ |
258 |
public void testInvokeAny3() throws Exception { |
259 |
final ExecutorService e = new DirectExecutorService(); |
260 |
try (PoolCleaner cleaner = cleaner(e)) { |
261 |
List<Callable<Long>> l = new ArrayList<>(); |
262 |
l.add(new Callable<Long>() { |
263 |
public Long call() { throw new ArithmeticException(); }}); |
264 |
l.add(null); |
265 |
try { |
266 |
e.invokeAny(l); |
267 |
shouldThrow(); |
268 |
} catch (NullPointerException success) {} |
269 |
} |
270 |
} |
271 |
|
272 |
/** |
273 |
* invokeAny(c) throws ExecutionException if no task in c completes |
274 |
*/ |
275 |
public void testInvokeAny4() throws InterruptedException { |
276 |
final ExecutorService e = new DirectExecutorService(); |
277 |
try (PoolCleaner cleaner = cleaner(e)) { |
278 |
List<Callable<String>> l = new ArrayList<>(); |
279 |
l.add(new NPETask()); |
280 |
try { |
281 |
e.invokeAny(l); |
282 |
shouldThrow(); |
283 |
} catch (ExecutionException success) { |
284 |
assertTrue(success.getCause() instanceof NullPointerException); |
285 |
} |
286 |
} |
287 |
} |
288 |
|
289 |
/** |
290 |
* invokeAny(c) returns result of some task in c if at least one completes |
291 |
*/ |
292 |
public void testInvokeAny5() throws Exception { |
293 |
final ExecutorService e = new DirectExecutorService(); |
294 |
try (PoolCleaner cleaner = cleaner(e)) { |
295 |
List<Callable<String>> l = new ArrayList<>(); |
296 |
l.add(new StringTask()); |
297 |
l.add(new StringTask()); |
298 |
String result = e.invokeAny(l); |
299 |
assertSame(TEST_STRING, result); |
300 |
} |
301 |
} |
302 |
|
303 |
/** |
304 |
* invokeAll(null) throws NPE |
305 |
*/ |
306 |
public void testInvokeAll1() throws InterruptedException { |
307 |
final ExecutorService e = new DirectExecutorService(); |
308 |
try (PoolCleaner cleaner = cleaner(e)) { |
309 |
try { |
310 |
e.invokeAll(null); |
311 |
shouldThrow(); |
312 |
} catch (NullPointerException success) {} |
313 |
} |
314 |
} |
315 |
|
316 |
/** |
317 |
* invokeAll(empty collection) returns empty list |
318 |
*/ |
319 |
public void testInvokeAll2() throws InterruptedException { |
320 |
final ExecutorService e = new DirectExecutorService(); |
321 |
final Collection<Callable<String>> emptyCollection |
322 |
= Collections.emptyList(); |
323 |
try (PoolCleaner cleaner = cleaner(e)) { |
324 |
List<Future<String>> r = e.invokeAll(emptyCollection); |
325 |
assertTrue(r.isEmpty()); |
326 |
} |
327 |
} |
328 |
|
329 |
/** |
330 |
* invokeAll(c) throws NPE if c has null elements |
331 |
*/ |
332 |
public void testInvokeAll3() throws InterruptedException { |
333 |
final ExecutorService e = new DirectExecutorService(); |
334 |
try (PoolCleaner cleaner = cleaner(e)) { |
335 |
List<Callable<String>> l = new ArrayList<>(); |
336 |
l.add(new StringTask()); |
337 |
l.add(null); |
338 |
try { |
339 |
e.invokeAll(l); |
340 |
shouldThrow(); |
341 |
} catch (NullPointerException success) {} |
342 |
} |
343 |
} |
344 |
|
345 |
/** |
346 |
* get of returned element of invokeAll(c) throws exception on failed task |
347 |
*/ |
348 |
public void testInvokeAll4() throws Exception { |
349 |
final ExecutorService e = new DirectExecutorService(); |
350 |
try (PoolCleaner cleaner = cleaner(e)) { |
351 |
List<Callable<String>> l = new ArrayList<>(); |
352 |
l.add(new NPETask()); |
353 |
List<Future<String>> futures = e.invokeAll(l); |
354 |
assertEquals(1, futures.size()); |
355 |
try { |
356 |
futures.get(0).get(); |
357 |
shouldThrow(); |
358 |
} catch (ExecutionException success) { |
359 |
assertTrue(success.getCause() instanceof NullPointerException); |
360 |
} |
361 |
} |
362 |
} |
363 |
|
364 |
/** |
365 |
* invokeAll(c) returns results of all completed tasks in c |
366 |
*/ |
367 |
public void testInvokeAll5() throws Exception { |
368 |
final ExecutorService e = new DirectExecutorService(); |
369 |
try (PoolCleaner cleaner = cleaner(e)) { |
370 |
List<Callable<String>> l = new ArrayList<>(); |
371 |
l.add(new StringTask()); |
372 |
l.add(new StringTask()); |
373 |
List<Future<String>> futures = e.invokeAll(l); |
374 |
assertEquals(2, futures.size()); |
375 |
for (Future<String> future : futures) |
376 |
assertSame(TEST_STRING, future.get()); |
377 |
} |
378 |
} |
379 |
|
380 |
/** |
381 |
* timed invokeAny(null) throws NPE |
382 |
*/ |
383 |
public void testTimedInvokeAny1() throws Exception { |
384 |
final ExecutorService e = new DirectExecutorService(); |
385 |
try (PoolCleaner cleaner = cleaner(e)) { |
386 |
try { |
387 |
e.invokeAny(null, randomTimeout(), randomTimeUnit()); |
388 |
shouldThrow(); |
389 |
} catch (NullPointerException success) {} |
390 |
} |
391 |
} |
392 |
|
393 |
/** |
394 |
* timed invokeAny(null time unit) throws NullPointerException |
395 |
*/ |
396 |
public void testTimedInvokeAnyNullTimeUnit() throws Exception { |
397 |
final ExecutorService e = new DirectExecutorService(); |
398 |
try (PoolCleaner cleaner = cleaner(e)) { |
399 |
List<Callable<String>> l = new ArrayList<>(); |
400 |
l.add(new StringTask()); |
401 |
try { |
402 |
e.invokeAny(l, randomTimeout(), null); |
403 |
shouldThrow(); |
404 |
} catch (NullPointerException success) {} |
405 |
} |
406 |
} |
407 |
|
408 |
/** |
409 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
410 |
*/ |
411 |
public void testTimedInvokeAny2() throws Exception { |
412 |
final ExecutorService e = new DirectExecutorService(); |
413 |
final Collection<Callable<String>> emptyCollection |
414 |
= Collections.emptyList(); |
415 |
try (PoolCleaner cleaner = cleaner(e)) { |
416 |
try { |
417 |
e.invokeAny(emptyCollection, randomTimeout(), randomTimeUnit()); |
418 |
shouldThrow(); |
419 |
} catch (IllegalArgumentException success) {} |
420 |
} |
421 |
} |
422 |
|
423 |
/** |
424 |
* timed invokeAny(c) throws NPE if c has null elements |
425 |
*/ |
426 |
public void testTimedInvokeAny3() throws Exception { |
427 |
final ExecutorService e = new DirectExecutorService(); |
428 |
try (PoolCleaner cleaner = cleaner(e)) { |
429 |
List<Callable<Long>> l = new ArrayList<>(); |
430 |
l.add(new Callable<Long>() { |
431 |
public Long call() { throw new ArithmeticException(); }}); |
432 |
l.add(null); |
433 |
try { |
434 |
e.invokeAny(l, randomTimeout(), randomTimeUnit()); |
435 |
shouldThrow(); |
436 |
} catch (NullPointerException success) {} |
437 |
} |
438 |
} |
439 |
|
440 |
/** |
441 |
* timed invokeAny(c) throws ExecutionException if no task completes |
442 |
*/ |
443 |
public void testTimedInvokeAny4() throws Exception { |
444 |
final ExecutorService e = new DirectExecutorService(); |
445 |
try (PoolCleaner cleaner = cleaner(e)) { |
446 |
long startTime = System.nanoTime(); |
447 |
List<Callable<String>> l = new ArrayList<>(); |
448 |
l.add(new NPETask()); |
449 |
try { |
450 |
e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS); |
451 |
shouldThrow(); |
452 |
} catch (ExecutionException success) { |
453 |
assertTrue(success.getCause() instanceof NullPointerException); |
454 |
} |
455 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
456 |
} |
457 |
} |
458 |
|
459 |
/** |
460 |
* timed invokeAny(c) returns result of some task in c |
461 |
*/ |
462 |
public void testTimedInvokeAny5() throws Exception { |
463 |
final ExecutorService e = new DirectExecutorService(); |
464 |
try (PoolCleaner cleaner = cleaner(e)) { |
465 |
long startTime = System.nanoTime(); |
466 |
List<Callable<String>> l = new ArrayList<>(); |
467 |
l.add(new StringTask()); |
468 |
l.add(new StringTask()); |
469 |
String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS); |
470 |
assertSame(TEST_STRING, result); |
471 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
472 |
} |
473 |
} |
474 |
|
475 |
/** |
476 |
* timed invokeAll(null) throws NullPointerException |
477 |
*/ |
478 |
public void testTimedInvokeAll1() throws InterruptedException { |
479 |
final ExecutorService e = new DirectExecutorService(); |
480 |
try (PoolCleaner cleaner = cleaner(e)) { |
481 |
try { |
482 |
e.invokeAll(null, randomTimeout(), randomTimeUnit()); |
483 |
shouldThrow(); |
484 |
} catch (NullPointerException success) {} |
485 |
} |
486 |
} |
487 |
|
488 |
/** |
489 |
* timed invokeAll(null time unit) throws NPE |
490 |
*/ |
491 |
public void testTimedInvokeAllNullTimeUnit() throws InterruptedException { |
492 |
final ExecutorService e = new DirectExecutorService(); |
493 |
try (PoolCleaner cleaner = cleaner(e)) { |
494 |
List<Callable<String>> l = new ArrayList<>(); |
495 |
l.add(new StringTask()); |
496 |
try { |
497 |
e.invokeAll(l, randomTimeout(), null); |
498 |
shouldThrow(); |
499 |
} catch (NullPointerException success) {} |
500 |
} |
501 |
} |
502 |
|
503 |
/** |
504 |
* timed invokeAll(empty collection) returns empty list |
505 |
*/ |
506 |
public void testTimedInvokeAll2() throws InterruptedException { |
507 |
final ExecutorService e = new DirectExecutorService(); |
508 |
final Collection<Callable<String>> emptyCollection |
509 |
= Collections.emptyList(); |
510 |
try (PoolCleaner cleaner = cleaner(e)) { |
511 |
List<Future<String>> r = |
512 |
e.invokeAll(emptyCollection, randomTimeout(), randomTimeUnit()); |
513 |
assertTrue(r.isEmpty()); |
514 |
} |
515 |
} |
516 |
|
517 |
/** |
518 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
519 |
*/ |
520 |
public void testTimedInvokeAll3() throws InterruptedException { |
521 |
final ExecutorService e = new DirectExecutorService(); |
522 |
try (PoolCleaner cleaner = cleaner(e)) { |
523 |
List<Callable<String>> l = new ArrayList<>(); |
524 |
l.add(new StringTask()); |
525 |
l.add(null); |
526 |
try { |
527 |
e.invokeAll(l, randomTimeout(), randomTimeUnit()); |
528 |
shouldThrow(); |
529 |
} catch (NullPointerException success) {} |
530 |
} |
531 |
} |
532 |
|
533 |
/** |
534 |
* get of returned element of invokeAll(c) throws exception on failed task |
535 |
*/ |
536 |
public void testTimedInvokeAll4() throws Exception { |
537 |
final ExecutorService e = new DirectExecutorService(); |
538 |
try (PoolCleaner cleaner = cleaner(e)) { |
539 |
List<Callable<String>> l = new ArrayList<>(); |
540 |
l.add(new NPETask()); |
541 |
List<Future<String>> futures = |
542 |
e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
543 |
assertEquals(1, futures.size()); |
544 |
try { |
545 |
futures.get(0).get(); |
546 |
shouldThrow(); |
547 |
} catch (ExecutionException success) { |
548 |
assertTrue(success.getCause() instanceof NullPointerException); |
549 |
} |
550 |
} |
551 |
} |
552 |
|
553 |
/** |
554 |
* timed invokeAll(c) returns results of all completed tasks in c |
555 |
*/ |
556 |
public void testTimedInvokeAll5() throws Exception { |
557 |
final ExecutorService e = new DirectExecutorService(); |
558 |
try (PoolCleaner cleaner = cleaner(e)) { |
559 |
List<Callable<String>> l = new ArrayList<>(); |
560 |
l.add(new StringTask()); |
561 |
l.add(new StringTask()); |
562 |
List<Future<String>> futures = |
563 |
e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
564 |
assertEquals(2, futures.size()); |
565 |
for (Future<String> future : futures) |
566 |
assertSame(TEST_STRING, future.get()); |
567 |
} |
568 |
} |
569 |
|
570 |
/** |
571 |
* timed invokeAll cancels tasks not completed by timeout |
572 |
*/ |
573 |
public void testTimedInvokeAll6() throws Exception { |
574 |
final ExecutorService e = new DirectExecutorService(); |
575 |
try (PoolCleaner cleaner = cleaner(e)) { |
576 |
for (long timeout = timeoutMillis();;) { |
577 |
List<Callable<String>> tasks = new ArrayList<>(); |
578 |
tasks.add(new StringTask("0")); |
579 |
tasks.add(Executors.callable(possiblyInterruptedRunnable(timeout), |
580 |
TEST_STRING)); |
581 |
tasks.add(new StringTask("2")); |
582 |
long startTime = System.nanoTime(); |
583 |
List<Future<String>> futures = |
584 |
e.invokeAll(tasks, timeout, MILLISECONDS); |
585 |
assertEquals(tasks.size(), futures.size()); |
586 |
assertTrue(millisElapsedSince(startTime) >= timeout); |
587 |
for (Future<?> future : futures) |
588 |
assertTrue(future.isDone()); |
589 |
try { |
590 |
assertEquals("0", futures.get(0).get()); |
591 |
assertEquals(TEST_STRING, futures.get(1).get()); |
592 |
} catch (CancellationException retryWithLongerTimeout) { |
593 |
// unusual delay before starting second task |
594 |
timeout *= 2; |
595 |
if (timeout >= LONG_DELAY_MS / 2) |
596 |
fail("expected exactly one task to be cancelled"); |
597 |
continue; |
598 |
} |
599 |
assertTrue(futures.get(2).isCancelled()); |
600 |
break; |
601 |
} |
602 |
} |
603 |
} |
604 |
|
605 |
} |