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