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 |
CheckedRunnable task = new CheckedRunnable() { |
50 |
public void realRun() { |
51 |
done.set(true); |
52 |
}}; |
53 |
Future<?> future = e.submit(task); |
54 |
assertNull(future.get()); |
55 |
assertNull(future.get(0, MILLISECONDS)); |
56 |
assertTrue(done.get()); |
57 |
assertTrue(future.isDone()); |
58 |
assertFalse(future.isCancelled()); |
59 |
} |
60 |
|
61 |
/** |
62 |
* Completed submit(callable) returns result |
63 |
*/ |
64 |
public void testSubmitCallable() throws Exception { |
65 |
ExecutorService e = new DirectExecutorService(); |
66 |
Future<String> future = e.submit(new StringTask()); |
67 |
String result = future.get(); |
68 |
assertSame(TEST_STRING, result); |
69 |
} |
70 |
|
71 |
/** |
72 |
* Completed submit(runnable) returns successfully |
73 |
*/ |
74 |
public void testSubmitRunnable() throws Exception { |
75 |
ExecutorService e = new DirectExecutorService(); |
76 |
Future<?> future = e.submit(new NoOpRunnable()); |
77 |
future.get(); |
78 |
assertTrue(future.isDone()); |
79 |
} |
80 |
|
81 |
/** |
82 |
* Completed submit(runnable, result) returns result |
83 |
*/ |
84 |
public void testSubmitRunnable2() throws Exception { |
85 |
ExecutorService e = new DirectExecutorService(); |
86 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
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String result = future.get(); |
88 |
assertSame(TEST_STRING, result); |
89 |
} |
90 |
|
91 |
/** |
92 |
* A submitted privileged action runs to completion |
93 |
*/ |
94 |
public void testSubmitPrivilegedAction() throws Exception { |
95 |
Runnable r = new CheckedRunnable() { |
96 |
public void realRun() throws Exception { |
97 |
ExecutorService e = new DirectExecutorService(); |
98 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
99 |
public Object run() { |
100 |
return TEST_STRING; |
101 |
}})); |
102 |
|
103 |
assertSame(TEST_STRING, future.get()); |
104 |
}}; |
105 |
|
106 |
runWithPermissions(r, |
107 |
new RuntimePermission("getClassLoader"), |
108 |
new RuntimePermission("setContextClassLoader"), |
109 |
new RuntimePermission("modifyThread")); |
110 |
} |
111 |
|
112 |
/** |
113 |
* A submitted privileged exception action runs to completion |
114 |
*/ |
115 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
116 |
Runnable r = new CheckedRunnable() { |
117 |
public void realRun() throws Exception { |
118 |
ExecutorService e = new DirectExecutorService(); |
119 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
120 |
public Object run() { |
121 |
return TEST_STRING; |
122 |
}})); |
123 |
|
124 |
assertSame(TEST_STRING, future.get()); |
125 |
}}; |
126 |
|
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runWithPermissions(r); |
128 |
} |
129 |
|
130 |
/** |
131 |
* A submitted failed privileged exception action reports exception |
132 |
*/ |
133 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
134 |
Runnable r = new CheckedRunnable() { |
135 |
public void realRun() throws Exception { |
136 |
ExecutorService e = new DirectExecutorService(); |
137 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
138 |
public Object run() throws Exception { |
139 |
throw new IndexOutOfBoundsException(); |
140 |
}})); |
141 |
|
142 |
try { |
143 |
future.get(); |
144 |
shouldThrow(); |
145 |
} catch (ExecutionException success) { |
146 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
147 |
}}}; |
148 |
|
149 |
runWithPermissions(r); |
150 |
} |
151 |
|
152 |
/** |
153 |
* execute(null runnable) throws NPE |
154 |
*/ |
155 |
public void testExecuteNullRunnable() { |
156 |
try { |
157 |
ExecutorService e = new DirectExecutorService(); |
158 |
e.submit((Runnable) null); |
159 |
shouldThrow(); |
160 |
} catch (NullPointerException success) {} |
161 |
} |
162 |
|
163 |
/** |
164 |
* submit(null callable) throws NPE |
165 |
*/ |
166 |
public void testSubmitNullCallable() { |
167 |
try { |
168 |
ExecutorService e = new DirectExecutorService(); |
169 |
e.submit((Callable) null); |
170 |
shouldThrow(); |
171 |
} catch (NullPointerException success) {} |
172 |
} |
173 |
|
174 |
/** |
175 |
* submit(callable).get() throws InterruptedException if interrupted |
176 |
*/ |
177 |
public void testInterruptedSubmit() throws InterruptedException { |
178 |
final CountDownLatch submitted = new CountDownLatch(1); |
179 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
180 |
final ExecutorService p |
181 |
= new ThreadPoolExecutor(1,1,60, TimeUnit.SECONDS, |
182 |
new ArrayBlockingQueue<Runnable>(10)); |
183 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
184 |
public Void realCall() throws InterruptedException { |
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quittingTime.await(); |
186 |
return null; |
187 |
}}; |
188 |
try { |
189 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
190 |
public void realRun() throws Exception { |
191 |
Future<Void> future = p.submit(awaiter); |
192 |
submitted.countDown(); |
193 |
future.get(); |
194 |
}}); |
195 |
t.start(); |
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submitted.await(); |
197 |
t.interrupt(); |
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t.join(); |
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} finally { |
200 |
quittingTime.countDown(); |
201 |
joinPool(p); |
202 |
} |
203 |
} |
204 |
|
205 |
/** |
206 |
* get of submit(callable) throws ExecutionException if callable |
207 |
* throws exception |
208 |
*/ |
209 |
public void testSubmitEE() throws InterruptedException { |
210 |
ThreadPoolExecutor p = |
211 |
new ThreadPoolExecutor(1, 1, |
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60, TimeUnit.SECONDS, |
213 |
new ArrayBlockingQueue<Runnable>(10)); |
214 |
|
215 |
Callable c = new Callable() { |
216 |
public Object call() { return 5/0; }}; |
217 |
|
218 |
try { |
219 |
p.submit(c).get(); |
220 |
shouldThrow(); |
221 |
} catch (ExecutionException success) { |
222 |
assertTrue(success.getCause() instanceof ArithmeticException); |
223 |
} |
224 |
joinPool(p); |
225 |
} |
226 |
|
227 |
/** |
228 |
* invokeAny(null) throws NPE |
229 |
*/ |
230 |
public void testInvokeAny1() throws Exception { |
231 |
ExecutorService e = new DirectExecutorService(); |
232 |
try { |
233 |
e.invokeAny(null); |
234 |
shouldThrow(); |
235 |
} catch (NullPointerException success) { |
236 |
} finally { |
237 |
joinPool(e); |
238 |
} |
239 |
} |
240 |
|
241 |
/** |
242 |
* invokeAny(empty collection) throws IAE |
243 |
*/ |
244 |
public void testInvokeAny2() throws Exception { |
245 |
ExecutorService e = new DirectExecutorService(); |
246 |
try { |
247 |
e.invokeAny(new ArrayList<Callable<String>>()); |
248 |
shouldThrow(); |
249 |
} catch (IllegalArgumentException success) { |
250 |
} finally { |
251 |
joinPool(e); |
252 |
} |
253 |
} |
254 |
|
255 |
/** |
256 |
* invokeAny(c) throws NPE if c has null elements |
257 |
*/ |
258 |
public void testInvokeAny3() throws Exception { |
259 |
ExecutorService e = new DirectExecutorService(); |
260 |
List<Callable<Integer>> l = new ArrayList<Callable<Integer>>(); |
261 |
l.add(new Callable<Integer>() { |
262 |
public Integer call() { return 5/0; }}); |
263 |
l.add(null); |
264 |
try { |
265 |
e.invokeAny(l); |
266 |
shouldThrow(); |
267 |
} catch (NullPointerException success) { |
268 |
} finally { |
269 |
joinPool(e); |
270 |
} |
271 |
} |
272 |
|
273 |
/** |
274 |
* invokeAny(c) throws ExecutionException if no task in c completes |
275 |
*/ |
276 |
public void testInvokeAny4() throws InterruptedException { |
277 |
ExecutorService e = new DirectExecutorService(); |
278 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
279 |
l.add(new NPETask()); |
280 |
try { |
281 |
e.invokeAny(l); |
282 |
shouldThrow(); |
283 |
} catch (ExecutionException success) { |
284 |
assertTrue(success.getCause() instanceof NullPointerException); |
285 |
} finally { |
286 |
joinPool(e); |
287 |
} |
288 |
} |
289 |
|
290 |
/** |
291 |
* invokeAny(c) returns result of some task in c if at least one completes |
292 |
*/ |
293 |
public void testInvokeAny5() throws Exception { |
294 |
ExecutorService e = new DirectExecutorService(); |
295 |
try { |
296 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
297 |
l.add(new StringTask()); |
298 |
l.add(new StringTask()); |
299 |
String result = e.invokeAny(l); |
300 |
assertSame(TEST_STRING, result); |
301 |
} finally { |
302 |
joinPool(e); |
303 |
} |
304 |
} |
305 |
|
306 |
/** |
307 |
* invokeAll(null) throws NPE |
308 |
*/ |
309 |
public void testInvokeAll1() throws InterruptedException { |
310 |
ExecutorService e = new DirectExecutorService(); |
311 |
try { |
312 |
e.invokeAll(null); |
313 |
shouldThrow(); |
314 |
} catch (NullPointerException success) { |
315 |
} finally { |
316 |
joinPool(e); |
317 |
} |
318 |
} |
319 |
|
320 |
/** |
321 |
* invokeAll(empty collection) returns empty collection |
322 |
*/ |
323 |
public void testInvokeAll2() throws InterruptedException { |
324 |
ExecutorService e = new DirectExecutorService(); |
325 |
try { |
326 |
List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>()); |
327 |
assertTrue(r.isEmpty()); |
328 |
} finally { |
329 |
joinPool(e); |
330 |
} |
331 |
} |
332 |
|
333 |
/** |
334 |
* invokeAll(c) throws NPE if c has null elements |
335 |
*/ |
336 |
public void testInvokeAll3() throws InterruptedException { |
337 |
ExecutorService e = new DirectExecutorService(); |
338 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
339 |
l.add(new StringTask()); |
340 |
l.add(null); |
341 |
try { |
342 |
e.invokeAll(l); |
343 |
shouldThrow(); |
344 |
} catch (NullPointerException success) { |
345 |
} finally { |
346 |
joinPool(e); |
347 |
} |
348 |
} |
349 |
|
350 |
/** |
351 |
* get of returned element of invokeAll(c) throws exception on failed task |
352 |
*/ |
353 |
public void testInvokeAll4() throws Exception { |
354 |
ExecutorService e = new DirectExecutorService(); |
355 |
try { |
356 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
357 |
l.add(new NPETask()); |
358 |
List<Future<String>> futures = e.invokeAll(l); |
359 |
assertEquals(1, futures.size()); |
360 |
try { |
361 |
futures.get(0).get(); |
362 |
shouldThrow(); |
363 |
} catch (ExecutionException success) { |
364 |
assertTrue(success.getCause() instanceof NullPointerException); |
365 |
} |
366 |
} finally { |
367 |
joinPool(e); |
368 |
} |
369 |
} |
370 |
|
371 |
/** |
372 |
* invokeAll(c) returns results of all completed tasks in c |
373 |
*/ |
374 |
public void testInvokeAll5() throws Exception { |
375 |
ExecutorService e = new DirectExecutorService(); |
376 |
try { |
377 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
378 |
l.add(new StringTask()); |
379 |
l.add(new StringTask()); |
380 |
List<Future<String>> futures = e.invokeAll(l); |
381 |
assertEquals(2, futures.size()); |
382 |
for (Future<String> future : futures) |
383 |
assertSame(TEST_STRING, future.get()); |
384 |
} finally { |
385 |
joinPool(e); |
386 |
} |
387 |
} |
388 |
|
389 |
/** |
390 |
* timed invokeAny(null) throws NPE |
391 |
*/ |
392 |
public void testTimedInvokeAny1() throws Exception { |
393 |
ExecutorService e = new DirectExecutorService(); |
394 |
try { |
395 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
396 |
shouldThrow(); |
397 |
} catch (NullPointerException success) { |
398 |
} finally { |
399 |
joinPool(e); |
400 |
} |
401 |
} |
402 |
|
403 |
/** |
404 |
* timed invokeAny(null time unit) throws NPE |
405 |
*/ |
406 |
public void testTimedInvokeAnyNullTimeUnit() throws Exception { |
407 |
ExecutorService e = new DirectExecutorService(); |
408 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
409 |
l.add(new StringTask()); |
410 |
try { |
411 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
412 |
shouldThrow(); |
413 |
} catch (NullPointerException success) { |
414 |
} finally { |
415 |
joinPool(e); |
416 |
} |
417 |
} |
418 |
|
419 |
/** |
420 |
* timed invokeAny(empty collection) throws IAE |
421 |
*/ |
422 |
public void testTimedInvokeAny2() throws Exception { |
423 |
ExecutorService e = new DirectExecutorService(); |
424 |
try { |
425 |
e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS); |
426 |
shouldThrow(); |
427 |
} catch (IllegalArgumentException success) { |
428 |
} finally { |
429 |
joinPool(e); |
430 |
} |
431 |
} |
432 |
|
433 |
/** |
434 |
* timed invokeAny(c) throws NPE if c has null elements |
435 |
*/ |
436 |
public void testTimedInvokeAny3() throws Exception { |
437 |
ExecutorService e = new DirectExecutorService(); |
438 |
List<Callable<Integer>> l = new ArrayList<Callable<Integer>>(); |
439 |
l.add(new Callable<Integer>() { |
440 |
public Integer call() { return 5/0; }}); |
441 |
l.add(null); |
442 |
try { |
443 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
444 |
shouldThrow(); |
445 |
} catch (NullPointerException success) { |
446 |
} finally { |
447 |
joinPool(e); |
448 |
} |
449 |
} |
450 |
|
451 |
/** |
452 |
* timed invokeAny(c) throws ExecutionException if no task completes |
453 |
*/ |
454 |
public void testTimedInvokeAny4() throws Exception { |
455 |
ExecutorService e = new DirectExecutorService(); |
456 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
457 |
l.add(new NPETask()); |
458 |
try { |
459 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
460 |
shouldThrow(); |
461 |
} catch (ExecutionException success) { |
462 |
assertTrue(success.getCause() instanceof NullPointerException); |
463 |
} finally { |
464 |
joinPool(e); |
465 |
} |
466 |
} |
467 |
|
468 |
/** |
469 |
* timed invokeAny(c) returns result of some task in c |
470 |
*/ |
471 |
public void testTimedInvokeAny5() throws Exception { |
472 |
ExecutorService e = new DirectExecutorService(); |
473 |
try { |
474 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
475 |
l.add(new StringTask()); |
476 |
l.add(new StringTask()); |
477 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
478 |
assertSame(TEST_STRING, result); |
479 |
} finally { |
480 |
joinPool(e); |
481 |
} |
482 |
} |
483 |
|
484 |
/** |
485 |
* timed invokeAll(null) throws NPE |
486 |
*/ |
487 |
public void testTimedInvokeAll1() throws InterruptedException { |
488 |
ExecutorService e = new DirectExecutorService(); |
489 |
try { |
490 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
491 |
shouldThrow(); |
492 |
} catch (NullPointerException success) { |
493 |
} finally { |
494 |
joinPool(e); |
495 |
} |
496 |
} |
497 |
|
498 |
/** |
499 |
* timed invokeAll(null time unit) throws NPE |
500 |
*/ |
501 |
public void testTimedInvokeAllNullTimeUnit() throws InterruptedException { |
502 |
ExecutorService e = new DirectExecutorService(); |
503 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
504 |
l.add(new StringTask()); |
505 |
try { |
506 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
507 |
shouldThrow(); |
508 |
} catch (NullPointerException success) { |
509 |
} finally { |
510 |
joinPool(e); |
511 |
} |
512 |
} |
513 |
|
514 |
/** |
515 |
* timed invokeAll(empty collection) returns empty collection |
516 |
*/ |
517 |
public void testTimedInvokeAll2() throws InterruptedException { |
518 |
ExecutorService e = new DirectExecutorService(); |
519 |
try { |
520 |
List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS); |
521 |
assertTrue(r.isEmpty()); |
522 |
} finally { |
523 |
joinPool(e); |
524 |
} |
525 |
} |
526 |
|
527 |
/** |
528 |
* timed invokeAll(c) throws NPE if c has null elements |
529 |
*/ |
530 |
public void testTimedInvokeAll3() throws InterruptedException { |
531 |
ExecutorService e = new DirectExecutorService(); |
532 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
533 |
l.add(new StringTask()); |
534 |
l.add(null); |
535 |
try { |
536 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
537 |
shouldThrow(); |
538 |
} catch (NullPointerException success) { |
539 |
} finally { |
540 |
joinPool(e); |
541 |
} |
542 |
} |
543 |
|
544 |
/** |
545 |
* get of returned element of invokeAll(c) throws exception on failed task |
546 |
*/ |
547 |
public void testTimedInvokeAll4() throws Exception { |
548 |
ExecutorService e = new DirectExecutorService(); |
549 |
try { |
550 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
551 |
l.add(new NPETask()); |
552 |
List<Future<String>> futures = |
553 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
554 |
assertEquals(1, futures.size()); |
555 |
try { |
556 |
futures.get(0).get(); |
557 |
shouldThrow(); |
558 |
} catch (ExecutionException success) { |
559 |
assertTrue(success.getCause() instanceof NullPointerException); |
560 |
} |
561 |
} finally { |
562 |
joinPool(e); |
563 |
} |
564 |
} |
565 |
|
566 |
/** |
567 |
* timed invokeAll(c) returns results of all completed tasks in c |
568 |
*/ |
569 |
public void testTimedInvokeAll5() throws Exception { |
570 |
ExecutorService e = new DirectExecutorService(); |
571 |
try { |
572 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
573 |
l.add(new StringTask()); |
574 |
l.add(new StringTask()); |
575 |
List<Future<String>> futures = |
576 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
577 |
assertEquals(2, futures.size()); |
578 |
for (Future<String> future : futures) |
579 |
assertSame(TEST_STRING, future.get()); |
580 |
} finally { |
581 |
joinPool(e); |
582 |
} |
583 |
} |
584 |
|
585 |
/** |
586 |
* timed invokeAll cancels tasks not completed by timeout |
587 |
*/ |
588 |
public void testTimedInvokeAll6() throws InterruptedException { |
589 |
ExecutorService e = new DirectExecutorService(); |
590 |
try { |
591 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
592 |
l.add(new StringTask()); |
593 |
l.add(Executors.callable(possiblyInterruptedRunnable(2 * SHORT_DELAY_MS), TEST_STRING)); |
594 |
l.add(new StringTask()); |
595 |
List<Future<String>> futures = |
596 |
e.invokeAll(l, SHORT_DELAY_MS, MILLISECONDS); |
597 |
assertEquals(l.size(), futures.size()); |
598 |
for (Future future : futures) |
599 |
assertTrue(future.isDone()); |
600 |
assertFalse(futures.get(0).isCancelled()); |
601 |
assertFalse(futures.get(1).isCancelled()); |
602 |
assertTrue(futures.get(2).isCancelled()); |
603 |
} finally { |
604 |
joinPool(e); |
605 |
} |
606 |
} |
607 |
|
608 |
} |