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 junit.framework.*; |
10 |
import java.util.*; |
11 |
import java.util.concurrent.*; |
12 |
import java.util.concurrent.atomic.AtomicBoolean; |
13 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
14 |
import java.security.*; |
15 |
|
16 |
public class AbstractExecutorServiceTest extends JSR166TestCase { |
17 |
public static void main(String[] args) { |
18 |
junit.textui.TestRunner.run(suite()); |
19 |
} |
20 |
public static Test suite() { |
21 |
return new TestSuite(AbstractExecutorServiceTest.class); |
22 |
} |
23 |
|
24 |
/** |
25 |
* A no-frills implementation of AbstractExecutorService, designed |
26 |
* to test the submit methods only. |
27 |
*/ |
28 |
static class DirectExecutorService extends AbstractExecutorService { |
29 |
public void execute(Runnable r) { r.run(); } |
30 |
public void shutdown() { shutdown = true; } |
31 |
public List<Runnable> shutdownNow() { |
32 |
shutdown = true; |
33 |
return Collections.EMPTY_LIST; |
34 |
} |
35 |
public boolean isShutdown() { return shutdown; } |
36 |
public boolean isTerminated() { return isShutdown(); } |
37 |
public boolean awaitTermination(long timeout, TimeUnit unit) { |
38 |
return isShutdown(); |
39 |
} |
40 |
private volatile boolean shutdown = false; |
41 |
} |
42 |
|
43 |
/** |
44 |
* execute(runnable) runs it to completion |
45 |
*/ |
46 |
public void testExecuteRunnable() throws Exception { |
47 |
ExecutorService e = new DirectExecutorService(); |
48 |
final AtomicBoolean done = new AtomicBoolean(false); |
49 |
Future<?> future = e.submit(new CheckedRunnable() { |
50 |
public void realRun() { |
51 |
done.set(true); |
52 |
}}); |
53 |
assertNull(future.get()); |
54 |
assertNull(future.get(0, MILLISECONDS)); |
55 |
assertTrue(done.get()); |
56 |
assertTrue(future.isDone()); |
57 |
assertFalse(future.isCancelled()); |
58 |
} |
59 |
|
60 |
/** |
61 |
* Completed submit(callable) returns result |
62 |
*/ |
63 |
public void testSubmitCallable() throws Exception { |
64 |
ExecutorService e = new DirectExecutorService(); |
65 |
Future<String> future = e.submit(new StringTask()); |
66 |
String result = future.get(); |
67 |
assertSame(TEST_STRING, result); |
68 |
} |
69 |
|
70 |
/** |
71 |
* Completed submit(runnable) returns successfully |
72 |
*/ |
73 |
public void testSubmitRunnable() throws Exception { |
74 |
ExecutorService e = new DirectExecutorService(); |
75 |
Future<?> future = e.submit(new NoOpRunnable()); |
76 |
future.get(); |
77 |
assertTrue(future.isDone()); |
78 |
} |
79 |
|
80 |
/** |
81 |
* Completed submit(runnable, result) returns result |
82 |
*/ |
83 |
public void testSubmitRunnable2() throws Exception { |
84 |
ExecutorService e = new DirectExecutorService(); |
85 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
86 |
String result = future.get(); |
87 |
assertSame(TEST_STRING, result); |
88 |
} |
89 |
|
90 |
/** |
91 |
* A submitted privileged action runs to completion |
92 |
*/ |
93 |
public void testSubmitPrivilegedAction() throws Exception { |
94 |
Runnable r = new CheckedRunnable() { |
95 |
public void realRun() throws Exception { |
96 |
ExecutorService e = new DirectExecutorService(); |
97 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
98 |
public Object run() { |
99 |
return TEST_STRING; |
100 |
}})); |
101 |
|
102 |
assertSame(TEST_STRING, future.get()); |
103 |
}}; |
104 |
|
105 |
runWithPermissions(r, |
106 |
new RuntimePermission("getClassLoader"), |
107 |
new RuntimePermission("setContextClassLoader"), |
108 |
new RuntimePermission("modifyThread")); |
109 |
} |
110 |
|
111 |
/** |
112 |
* A submitted privileged exception action runs to completion |
113 |
*/ |
114 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
115 |
Runnable r = new CheckedRunnable() { |
116 |
public void realRun() throws Exception { |
117 |
ExecutorService e = new DirectExecutorService(); |
118 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
119 |
public Object run() { |
120 |
return TEST_STRING; |
121 |
}})); |
122 |
|
123 |
assertSame(TEST_STRING, future.get()); |
124 |
}}; |
125 |
|
126 |
runWithPermissions(r); |
127 |
} |
128 |
|
129 |
/** |
130 |
* A submitted failed privileged exception action reports exception |
131 |
*/ |
132 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
133 |
Runnable r = new CheckedRunnable() { |
134 |
public void realRun() throws Exception { |
135 |
ExecutorService e = new DirectExecutorService(); |
136 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
137 |
public Object run() throws Exception { |
138 |
throw new IndexOutOfBoundsException(); |
139 |
}})); |
140 |
|
141 |
try { |
142 |
future.get(); |
143 |
shouldThrow(); |
144 |
} catch (ExecutionException success) { |
145 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
146 |
}}}; |
147 |
|
148 |
runWithPermissions(r); |
149 |
} |
150 |
|
151 |
/** |
152 |
* execute(null runnable) throws NPE |
153 |
*/ |
154 |
public void testExecuteNullRunnable() { |
155 |
try { |
156 |
ExecutorService e = new DirectExecutorService(); |
157 |
e.submit((Runnable) null); |
158 |
shouldThrow(); |
159 |
} catch (NullPointerException success) {} |
160 |
} |
161 |
|
162 |
/** |
163 |
* submit(null callable) throws NPE |
164 |
*/ |
165 |
public void testSubmitNullCallable() { |
166 |
try { |
167 |
ExecutorService e = new DirectExecutorService(); |
168 |
e.submit((Callable) null); |
169 |
shouldThrow(); |
170 |
} catch (NullPointerException success) {} |
171 |
} |
172 |
|
173 |
/** |
174 |
* submit(callable).get() throws InterruptedException if interrupted |
175 |
*/ |
176 |
public void testInterruptedSubmit() throws InterruptedException { |
177 |
final CountDownLatch submitted = new CountDownLatch(1); |
178 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
179 |
final ExecutorService p |
180 |
= new ThreadPoolExecutor(1,1,60, TimeUnit.SECONDS, |
181 |
new ArrayBlockingQueue<Runnable>(10)); |
182 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
183 |
public Void realCall() throws InterruptedException { |
184 |
quittingTime.await(); |
185 |
return null; |
186 |
}}; |
187 |
try { |
188 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
189 |
public void realRun() throws Exception { |
190 |
Future<Void> future = p.submit(awaiter); |
191 |
submitted.countDown(); |
192 |
future.get(); |
193 |
}}); |
194 |
t.start(); |
195 |
submitted.await(); |
196 |
t.interrupt(); |
197 |
t.join(); |
198 |
} finally { |
199 |
quittingTime.countDown(); |
200 |
joinPool(p); |
201 |
} |
202 |
} |
203 |
|
204 |
/** |
205 |
* get of submit(callable) throws ExecutionException if callable |
206 |
* throws exception |
207 |
*/ |
208 |
public void testSubmitEE() throws InterruptedException { |
209 |
ThreadPoolExecutor p = |
210 |
new ThreadPoolExecutor(1, 1, |
211 |
60, TimeUnit.SECONDS, |
212 |
new ArrayBlockingQueue<Runnable>(10)); |
213 |
|
214 |
Callable c = new Callable() { |
215 |
public Object call() { throw new ArithmeticException(); }}; |
216 |
|
217 |
try { |
218 |
p.submit(c).get(); |
219 |
shouldThrow(); |
220 |
} catch (ExecutionException success) { |
221 |
assertTrue(success.getCause() instanceof ArithmeticException); |
222 |
} |
223 |
joinPool(p); |
224 |
} |
225 |
|
226 |
/** |
227 |
* invokeAny(null) throws NPE |
228 |
*/ |
229 |
public void testInvokeAny1() throws Exception { |
230 |
ExecutorService e = new DirectExecutorService(); |
231 |
try { |
232 |
e.invokeAny(null); |
233 |
shouldThrow(); |
234 |
} catch (NullPointerException success) { |
235 |
} finally { |
236 |
joinPool(e); |
237 |
} |
238 |
} |
239 |
|
240 |
/** |
241 |
* invokeAny(empty collection) throws IAE |
242 |
*/ |
243 |
public void testInvokeAny2() throws Exception { |
244 |
ExecutorService e = new DirectExecutorService(); |
245 |
try { |
246 |
e.invokeAny(new ArrayList<Callable<String>>()); |
247 |
shouldThrow(); |
248 |
} catch (IllegalArgumentException success) { |
249 |
} finally { |
250 |
joinPool(e); |
251 |
} |
252 |
} |
253 |
|
254 |
/** |
255 |
* invokeAny(c) throws NPE if c has null elements |
256 |
*/ |
257 |
public void testInvokeAny3() throws Exception { |
258 |
ExecutorService e = new DirectExecutorService(); |
259 |
List<Callable<Long>> l = new ArrayList<Callable<Long>>(); |
260 |
l.add(new Callable<Long>() { |
261 |
public Long call() { throw new ArithmeticException(); }}); |
262 |
l.add(null); |
263 |
try { |
264 |
e.invokeAny(l); |
265 |
shouldThrow(); |
266 |
} catch (NullPointerException success) { |
267 |
} finally { |
268 |
joinPool(e); |
269 |
} |
270 |
} |
271 |
|
272 |
/** |
273 |
* invokeAny(c) throws ExecutionException if no task in c completes |
274 |
*/ |
275 |
public void testInvokeAny4() throws InterruptedException { |
276 |
ExecutorService e = new DirectExecutorService(); |
277 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
278 |
l.add(new NPETask()); |
279 |
try { |
280 |
e.invokeAny(l); |
281 |
shouldThrow(); |
282 |
} catch (ExecutionException success) { |
283 |
assertTrue(success.getCause() instanceof NullPointerException); |
284 |
} finally { |
285 |
joinPool(e); |
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 |
ExecutorService e = new DirectExecutorService(); |
294 |
try { |
295 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
296 |
l.add(new StringTask()); |
297 |
l.add(new StringTask()); |
298 |
String result = e.invokeAny(l); |
299 |
assertSame(TEST_STRING, result); |
300 |
} finally { |
301 |
joinPool(e); |
302 |
} |
303 |
} |
304 |
|
305 |
/** |
306 |
* invokeAll(null) throws NPE |
307 |
*/ |
308 |
public void testInvokeAll1() throws InterruptedException { |
309 |
ExecutorService e = new DirectExecutorService(); |
310 |
try { |
311 |
e.invokeAll(null); |
312 |
shouldThrow(); |
313 |
} catch (NullPointerException success) { |
314 |
} finally { |
315 |
joinPool(e); |
316 |
} |
317 |
} |
318 |
|
319 |
/** |
320 |
* invokeAll(empty collection) returns empty collection |
321 |
*/ |
322 |
public void testInvokeAll2() throws InterruptedException { |
323 |
ExecutorService e = new DirectExecutorService(); |
324 |
try { |
325 |
List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>()); |
326 |
assertTrue(r.isEmpty()); |
327 |
} finally { |
328 |
joinPool(e); |
329 |
} |
330 |
} |
331 |
|
332 |
/** |
333 |
* invokeAll(c) throws NPE if c has null elements |
334 |
*/ |
335 |
public void testInvokeAll3() throws InterruptedException { |
336 |
ExecutorService e = new DirectExecutorService(); |
337 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
338 |
l.add(new StringTask()); |
339 |
l.add(null); |
340 |
try { |
341 |
e.invokeAll(l); |
342 |
shouldThrow(); |
343 |
} catch (NullPointerException success) { |
344 |
} finally { |
345 |
joinPool(e); |
346 |
} |
347 |
} |
348 |
|
349 |
/** |
350 |
* get of returned element of invokeAll(c) throws exception on failed task |
351 |
*/ |
352 |
public void testInvokeAll4() throws Exception { |
353 |
ExecutorService e = new DirectExecutorService(); |
354 |
try { |
355 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
356 |
l.add(new NPETask()); |
357 |
List<Future<String>> futures = e.invokeAll(l); |
358 |
assertEquals(1, futures.size()); |
359 |
try { |
360 |
futures.get(0).get(); |
361 |
shouldThrow(); |
362 |
} catch (ExecutionException success) { |
363 |
assertTrue(success.getCause() instanceof NullPointerException); |
364 |
} |
365 |
} finally { |
366 |
joinPool(e); |
367 |
} |
368 |
} |
369 |
|
370 |
/** |
371 |
* invokeAll(c) returns results of all completed tasks in c |
372 |
*/ |
373 |
public void testInvokeAll5() throws Exception { |
374 |
ExecutorService e = new DirectExecutorService(); |
375 |
try { |
376 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
377 |
l.add(new StringTask()); |
378 |
l.add(new StringTask()); |
379 |
List<Future<String>> futures = e.invokeAll(l); |
380 |
assertEquals(2, futures.size()); |
381 |
for (Future<String> future : futures) |
382 |
assertSame(TEST_STRING, future.get()); |
383 |
} finally { |
384 |
joinPool(e); |
385 |
} |
386 |
} |
387 |
|
388 |
/** |
389 |
* timed invokeAny(null) throws NPE |
390 |
*/ |
391 |
public void testTimedInvokeAny1() throws Exception { |
392 |
ExecutorService e = new DirectExecutorService(); |
393 |
try { |
394 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
395 |
shouldThrow(); |
396 |
} catch (NullPointerException success) { |
397 |
} finally { |
398 |
joinPool(e); |
399 |
} |
400 |
} |
401 |
|
402 |
/** |
403 |
* timed invokeAny(null time unit) throws NPE |
404 |
*/ |
405 |
public void testTimedInvokeAnyNullTimeUnit() throws Exception { |
406 |
ExecutorService e = new DirectExecutorService(); |
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 |
} finally { |
414 |
joinPool(e); |
415 |
} |
416 |
} |
417 |
|
418 |
/** |
419 |
* timed invokeAny(empty collection) throws IAE |
420 |
*/ |
421 |
public void testTimedInvokeAny2() throws Exception { |
422 |
ExecutorService e = new DirectExecutorService(); |
423 |
try { |
424 |
e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS); |
425 |
shouldThrow(); |
426 |
} catch (IllegalArgumentException success) { |
427 |
} finally { |
428 |
joinPool(e); |
429 |
} |
430 |
} |
431 |
|
432 |
/** |
433 |
* timed invokeAny(c) throws NPE if c has null elements |
434 |
*/ |
435 |
public void testTimedInvokeAny3() throws Exception { |
436 |
ExecutorService e = new DirectExecutorService(); |
437 |
List<Callable<Long>> l = new ArrayList<Callable<Long>>(); |
438 |
l.add(new Callable<Long>() { |
439 |
public Long call() { throw new ArithmeticException(); }}); |
440 |
l.add(null); |
441 |
try { |
442 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
443 |
shouldThrow(); |
444 |
} catch (NullPointerException success) { |
445 |
} finally { |
446 |
joinPool(e); |
447 |
} |
448 |
} |
449 |
|
450 |
/** |
451 |
* timed invokeAny(c) throws ExecutionException if no task completes |
452 |
*/ |
453 |
public void testTimedInvokeAny4() throws Exception { |
454 |
ExecutorService e = new DirectExecutorService(); |
455 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
456 |
l.add(new NPETask()); |
457 |
try { |
458 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
459 |
shouldThrow(); |
460 |
} catch (ExecutionException success) { |
461 |
assertTrue(success.getCause() instanceof NullPointerException); |
462 |
} finally { |
463 |
joinPool(e); |
464 |
} |
465 |
} |
466 |
|
467 |
/** |
468 |
* timed invokeAny(c) returns result of some task in c |
469 |
*/ |
470 |
public void testTimedInvokeAny5() throws Exception { |
471 |
ExecutorService e = new DirectExecutorService(); |
472 |
try { |
473 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
474 |
l.add(new StringTask()); |
475 |
l.add(new StringTask()); |
476 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
477 |
assertSame(TEST_STRING, result); |
478 |
} finally { |
479 |
joinPool(e); |
480 |
} |
481 |
} |
482 |
|
483 |
/** |
484 |
* timed invokeAll(null) throws NPE |
485 |
*/ |
486 |
public void testTimedInvokeAll1() throws InterruptedException { |
487 |
ExecutorService e = new DirectExecutorService(); |
488 |
try { |
489 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
490 |
shouldThrow(); |
491 |
} catch (NullPointerException success) { |
492 |
} finally { |
493 |
joinPool(e); |
494 |
} |
495 |
} |
496 |
|
497 |
/** |
498 |
* timed invokeAll(null time unit) throws NPE |
499 |
*/ |
500 |
public void testTimedInvokeAllNullTimeUnit() throws InterruptedException { |
501 |
ExecutorService e = new DirectExecutorService(); |
502 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
503 |
l.add(new StringTask()); |
504 |
try { |
505 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
506 |
shouldThrow(); |
507 |
} catch (NullPointerException success) { |
508 |
} finally { |
509 |
joinPool(e); |
510 |
} |
511 |
} |
512 |
|
513 |
/** |
514 |
* timed invokeAll(empty collection) returns empty collection |
515 |
*/ |
516 |
public void testTimedInvokeAll2() throws InterruptedException { |
517 |
ExecutorService e = new DirectExecutorService(); |
518 |
try { |
519 |
List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS); |
520 |
assertTrue(r.isEmpty()); |
521 |
} finally { |
522 |
joinPool(e); |
523 |
} |
524 |
} |
525 |
|
526 |
/** |
527 |
* timed invokeAll(c) throws NPE if c has null elements |
528 |
*/ |
529 |
public void testTimedInvokeAll3() throws InterruptedException { |
530 |
ExecutorService e = new DirectExecutorService(); |
531 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
532 |
l.add(new StringTask()); |
533 |
l.add(null); |
534 |
try { |
535 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
536 |
shouldThrow(); |
537 |
} catch (NullPointerException success) { |
538 |
} finally { |
539 |
joinPool(e); |
540 |
} |
541 |
} |
542 |
|
543 |
/** |
544 |
* get of returned element of invokeAll(c) throws exception on failed task |
545 |
*/ |
546 |
public void testTimedInvokeAll4() throws Exception { |
547 |
ExecutorService e = new DirectExecutorService(); |
548 |
try { |
549 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
550 |
l.add(new NPETask()); |
551 |
List<Future<String>> futures = |
552 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
553 |
assertEquals(1, futures.size()); |
554 |
try { |
555 |
futures.get(0).get(); |
556 |
shouldThrow(); |
557 |
} catch (ExecutionException success) { |
558 |
assertTrue(success.getCause() instanceof NullPointerException); |
559 |
} |
560 |
} finally { |
561 |
joinPool(e); |
562 |
} |
563 |
} |
564 |
|
565 |
/** |
566 |
* timed invokeAll(c) returns results of all completed tasks in c |
567 |
*/ |
568 |
public void testTimedInvokeAll5() throws Exception { |
569 |
ExecutorService e = new DirectExecutorService(); |
570 |
try { |
571 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
572 |
l.add(new StringTask()); |
573 |
l.add(new StringTask()); |
574 |
List<Future<String>> futures = |
575 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
576 |
assertEquals(2, futures.size()); |
577 |
for (Future<String> future : futures) |
578 |
assertSame(TEST_STRING, future.get()); |
579 |
} finally { |
580 |
joinPool(e); |
581 |
} |
582 |
} |
583 |
|
584 |
/** |
585 |
* timed invokeAll cancels tasks not completed by timeout |
586 |
*/ |
587 |
public void testTimedInvokeAll6() throws InterruptedException { |
588 |
ExecutorService e = new DirectExecutorService(); |
589 |
try { |
590 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
591 |
l.add(new StringTask()); |
592 |
l.add(Executors.callable(possiblyInterruptedRunnable(2 * SHORT_DELAY_MS), TEST_STRING)); |
593 |
l.add(new StringTask()); |
594 |
List<Future<String>> futures = |
595 |
e.invokeAll(l, SHORT_DELAY_MS, MILLISECONDS); |
596 |
assertEquals(l.size(), futures.size()); |
597 |
for (Future future : futures) |
598 |
assertTrue(future.isDone()); |
599 |
assertFalse(futures.get(0).isCancelled()); |
600 |
assertFalse(futures.get(1).isCancelled()); |
601 |
assertTrue(futures.get(2).isCancelled()); |
602 |
} finally { |
603 |
joinPool(e); |
604 |
} |
605 |
} |
606 |
|
607 |
} |