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

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:55 2003 UTC vs.
Revision 1.63 by jsr166, Sun Oct 4 18:28:51 2015 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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.*;
10	<	import java.util.concurrent.*;
11	<
12	<	public class ScheduledExecutorTest extends TestCase{
13	<
14	<	boolean flag = false;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.SECONDS;
11
12	+	import java.util.ArrayList;
13	+	import java.util.HashSet;
14	+	import java.util.List;
15	+	import java.util.concurrent.BlockingQueue;
16	+	import java.util.concurrent.Callable;
17	+	import java.util.concurrent.CancellationException;
18	+	import java.util.concurrent.CountDownLatch;
19	+	import java.util.concurrent.ExecutionException;
20	+	import java.util.concurrent.Executors;
21	+	import java.util.concurrent.ExecutorService;
22	+	import java.util.concurrent.Future;
23	+	import java.util.concurrent.RejectedExecutionException;
24	+	import java.util.concurrent.ScheduledFuture;
25	+	import java.util.concurrent.ScheduledThreadPoolExecutor;
26	+	import java.util.concurrent.ThreadFactory;
27	+	import java.util.concurrent.ThreadPoolExecutor;
28	+	import java.util.concurrent.atomic.AtomicInteger;
29	+
30	+	import junit.framework.Test;
31	+	import junit.framework.TestSuite;
32	+
33	+	public class ScheduledExecutorTest extends JSR166TestCase {
34		public static void main(String[] args) {
35	<	junit.textui.TestRunner.run (suite());
35	>	main(suite(), args);
36		}
19	–
20	–
37		public static Test suite() {
38	<	return new TestSuite(ScheduledExecutorTest.class);
38	>	return new TestSuite(ScheduledExecutorTest.class);
39	>	}
40	>
41	>	/**
42	>	* execute successfully executes a runnable
43	>	*/
44	>	public void testExecute() throws InterruptedException {
45	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
46	>	try (PoolCleaner cleaner = cleaner(p)) {
47	>	final CountDownLatch done = new CountDownLatch(1);
48	>	final Runnable task = new CheckedRunnable() {
49	>	public void realRun() { done.countDown(); }};
50	>	p.execute(task);
51	>	assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS));
52	>	}
53	>	}
54	>
55	>	/**
56	>	* delayed schedule of callable successfully executes after delay
57	>	*/
58	>	public void testSchedule1() throws Exception {
59	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
60	>	try (PoolCleaner cleaner = cleaner(p)) {
61	>	final long startTime = System.nanoTime();
62	>	final CountDownLatch done = new CountDownLatch(1);
63	>	Callable task = new CheckedCallable<Boolean>() {
64	>	public Boolean realCall() {
65	>	done.countDown();
66	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
67	>	return Boolean.TRUE;
68	>	}};
69	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
70	>	assertSame(Boolean.TRUE, f.get());
71	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
72	>	assertTrue(done.await(0L, MILLISECONDS));
73	>	}
74	>	}
75	>
76	>	/**
77	>	* delayed schedule of runnable successfully executes after delay
78	>	*/
79	>	public void testSchedule3() throws Exception {
80	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
81	>	try (PoolCleaner cleaner = cleaner(p)) {
82	>	final long startTime = System.nanoTime();
83	>	final CountDownLatch done = new CountDownLatch(1);
84	>	Runnable task = new CheckedRunnable() {
85	>	public void realRun() {
86	>	done.countDown();
87	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
88	>	}};
89	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
90	>	await(done);
91	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
92	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
93	>	}
94	>	}
95	>
96	>	/**
97	>	* scheduleAtFixedRate executes runnable after given initial delay
98	>	*/
99	>	public void testSchedule4() throws Exception {
100	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
101	>	try (PoolCleaner cleaner = cleaner(p)) {
102	>	final long startTime = System.nanoTime();
103	>	final CountDownLatch done = new CountDownLatch(1);
104	>	Runnable task = new CheckedRunnable() {
105	>	public void realRun() {
106	>	done.countDown();
107	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
108	>	}};
109	>	ScheduledFuture f =
110	>	p.scheduleAtFixedRate(task, timeoutMillis(),
111	>	LONG_DELAY_MS, MILLISECONDS);
112	>	await(done);
113	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
114	>	f.cancel(true);
115	>	}
116	>	}
117	>
118	>	/**
119	>	* scheduleWithFixedDelay executes runnable after given initial delay
120	>	*/
121	>	public void testSchedule5() throws Exception {
122	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
123	>	try (PoolCleaner cleaner = cleaner(p)) {
124	>	final long startTime = System.nanoTime();
125	>	final CountDownLatch done = new CountDownLatch(1);
126	>	Runnable task = new CheckedRunnable() {
127	>	public void realRun() {
128	>	done.countDown();
129	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
130	>	}};
131	>	ScheduledFuture f =
132	>	p.scheduleWithFixedDelay(task, timeoutMillis(),
133	>	LONG_DELAY_MS, MILLISECONDS);
134	>	await(done);
135	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
136	>	f.cancel(true);
137	>	}
138	>	}
139	>
140	>	static class RunnableCounter implements Runnable {
141	>	AtomicInteger count = new AtomicInteger(0);
142	>	public void run() { count.getAndIncrement(); }
143	>	}
144	>
145	>	/**
146	>	* scheduleAtFixedRate executes series of tasks at given rate
147	>	*/
148	>	public void testFixedRateSequence() throws InterruptedException {
149	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
150	>	try (PoolCleaner cleaner = cleaner(p)) {
151	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
152	>	long startTime = System.nanoTime();
153	>	int cycles = 10;
154	>	final CountDownLatch done = new CountDownLatch(cycles);
155	>	Runnable task = new CheckedRunnable() {
156	>	public void realRun() { done.countDown(); }};
157	>	ScheduledFuture h =
158	>	p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
159	>	done.await();
160	>	h.cancel(true);
161	>	double normalizedTime =
162	>	(double) millisElapsedSince(startTime) / delay;
163	>	if (normalizedTime >= cycles - 1 &&
164	>	normalizedTime <= cycles)
165	>	return;
166	>	}
167	>	throw new AssertionError("unexpected execution rate");
168	>	}
169	>	}
170	>
171	>	/**
172	>	* scheduleWithFixedDelay executes series of tasks with given period
173	>	*/
174	>	public void testFixedDelaySequence() throws InterruptedException {
175	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
176	>	try (PoolCleaner cleaner = cleaner(p)) {
177	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
178	>	long startTime = System.nanoTime();
179	>	int cycles = 10;
180	>	final CountDownLatch done = new CountDownLatch(cycles);
181	>	Runnable task = new CheckedRunnable() {
182	>	public void realRun() { done.countDown(); }};
183	>	ScheduledFuture h =
184	>	p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
185	>	done.await();
186	>	h.cancel(true);
187	>	double normalizedTime =
188	>	(double) millisElapsedSince(startTime) / delay;
189	>	if (normalizedTime >= cycles - 1 &&
190	>	normalizedTime <= cycles)
191	>	return;
192	>	}
193	>	throw new AssertionError("unexpected execution rate");
194	>	}
195	>	}
196	>
197	>	/**
198	>	* execute(null) throws NPE
199	>	*/
200	>	public void testExecuteNull() throws InterruptedException {
201	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
202	>	try (PoolCleaner cleaner = cleaner(p)) {
203	>	try {
204	>	p.execute(null);
205	>	shouldThrow();
206	>	} catch (NullPointerException success) {}
207	>	}
208	>	}
209	>
210	>	/**
211	>	* schedule(null) throws NPE
212	>	*/
213	>	public void testScheduleNull() throws InterruptedException {
214	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
215	>	try (PoolCleaner cleaner = cleaner(p)) {
216	>	try {
217	>	TrackedCallable callable = null;
218	>	Future f = p.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
219	>	shouldThrow();
220	>	} catch (NullPointerException success) {}
221	>	}
222	>	}
223	>
224	>	/**
225	>	* execute throws RejectedExecutionException if shutdown
226	>	*/
227	>	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
228	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
229	>	try (PoolCleaner cleaner = cleaner(p)) {
230	>	try {
231	>	p.shutdown();
232	>	p.schedule(new NoOpRunnable(),
233	>	MEDIUM_DELAY_MS, MILLISECONDS);
234	>	shouldThrow();
235	>	} catch (RejectedExecutionException success) {
236	>	} catch (SecurityException ok) {}
237	>	}
238	>	}
239	>
240	>	/**
241	>	* schedule throws RejectedExecutionException if shutdown
242	>	*/
243	>	public void testSchedule2_RejectedExecutionException() throws InterruptedException {
244	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
245	>	try (PoolCleaner cleaner = cleaner(p)) {
246	>	try {
247	>	p.shutdown();
248	>	p.schedule(new NoOpCallable(),
249	>	MEDIUM_DELAY_MS, MILLISECONDS);
250	>	shouldThrow();
251	>	} catch (RejectedExecutionException success) {
252	>	} catch (SecurityException ok) {}
253	>	}
254	>	}
255	>
256	>	/**
257	>	* schedule callable throws RejectedExecutionException if shutdown
258	>	*/
259	>	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
260	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
261	>	try (PoolCleaner cleaner = cleaner(p)) {
262	>	try {
263	>	p.shutdown();
264	>	p.schedule(new NoOpCallable(),
265	>	MEDIUM_DELAY_MS, MILLISECONDS);
266	>	shouldThrow();
267	>	} catch (RejectedExecutionException success) {
268	>	} catch (SecurityException ok) {}
269	>	}
270	>	}
271	>
272	>	/**
273	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
274	>	*/
275	>	public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
276	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
277	>	try (PoolCleaner cleaner = cleaner(p)) {
278	>	try {
279	>	p.shutdown();
280	>	p.scheduleAtFixedRate(new NoOpRunnable(),
281	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
282	>	shouldThrow();
283	>	} catch (RejectedExecutionException success) {
284	>	} catch (SecurityException ok) {}
285	>	}
286	>	}
287	>
288	>	/**
289	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
290	>	*/
291	>	public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
292	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
293	>	try (PoolCleaner cleaner = cleaner(p)) {
294	>	try {
295	>	p.shutdown();
296	>	p.scheduleWithFixedDelay(new NoOpRunnable(),
297	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
298	>	shouldThrow();
299	>	} catch (RejectedExecutionException success) {
300	>	} catch (SecurityException ok) {}
301	>	}
302	>	}
303	>
304	>	/**
305	>	* getActiveCount increases but doesn't overestimate, when a
306	>	* thread becomes active
307	>	*/
308	>	public void testGetActiveCount() throws InterruptedException {
309	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
310	>	try (PoolCleaner cleaner = cleaner(p)) {
311	>	final CountDownLatch threadStarted = new CountDownLatch(1);
312	>	final CountDownLatch done = new CountDownLatch(1);
313	>	assertEquals(0, p.getActiveCount());
314	>	p.execute(new CheckedRunnable() {
315	>	public void realRun() throws InterruptedException {
316	>	threadStarted.countDown();
317	>	assertEquals(1, p.getActiveCount());
318	>	done.await();
319	>	}});
320	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
321	>	assertEquals(1, p.getActiveCount());
322	>	done.countDown();
323	>	}
324	>	}
325	>
326	>	/**
327	>	* getCompletedTaskCount increases, but doesn't overestimate,
328	>	* when tasks complete
329	>	*/
330	>	public void testGetCompletedTaskCount() throws InterruptedException {
331	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
332	>	try (PoolCleaner cleaner = cleaner(p)) {
333	>	final CountDownLatch threadStarted = new CountDownLatch(1);
334	>	final CountDownLatch threadProceed = new CountDownLatch(1);
335	>	final CountDownLatch threadDone = new CountDownLatch(1);
336	>	assertEquals(0, p.getCompletedTaskCount());
337	>	p.execute(new CheckedRunnable() {
338	>	public void realRun() throws InterruptedException {
339	>	threadStarted.countDown();
340	>	assertEquals(0, p.getCompletedTaskCount());
341	>	threadProceed.await();
342	>	threadDone.countDown();
343	>	}});
344	>	await(threadStarted);
345	>	assertEquals(0, p.getCompletedTaskCount());
346	>	threadProceed.countDown();
347	>	threadDone.await();
348	>	long startTime = System.nanoTime();
349	>	while (p.getCompletedTaskCount() != 1) {
350	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
351	>	fail("timed out");
352	>	Thread.yield();
353	>	}
354	>	}
355	>	}
356	>
357	>	/**
358	>	* getCorePoolSize returns size given in constructor if not otherwise set
359	>	*/
360	>	public void testGetCorePoolSize() throws InterruptedException {
361	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
362	>	try (PoolCleaner cleaner = cleaner(p)) {
363	>	assertEquals(1, p.getCorePoolSize());
364	>	}
365	>	}
366	>
367	>	/**
368	>	* getLargestPoolSize increases, but doesn't overestimate, when
369	>	* multiple threads active
370	>	*/
371	>	public void testGetLargestPoolSize() throws InterruptedException {
372	>	final int THREADS = 3;
373	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
374	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
375	>	final CountDownLatch done = new CountDownLatch(1);
376	>	try (PoolCleaner cleaner = cleaner(p)) {
377	>	assertEquals(0, p.getLargestPoolSize());
378	>	for (int i = 0; i < THREADS; i++)
379	>	p.execute(new CheckedRunnable() {
380	>	public void realRun() throws InterruptedException {
381	>	threadsStarted.countDown();
382	>	done.await();
383	>	assertEquals(THREADS, p.getLargestPoolSize());
384	>	}});
385	>	assertTrue(threadsStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
386	>	assertEquals(THREADS, p.getLargestPoolSize());
387	>	done.countDown();
388	>	}
389	>	assertEquals(THREADS, p.getLargestPoolSize());
390	>	}
391	>
392	>	/**
393	>	* getPoolSize increases, but doesn't overestimate, when threads
394	>	* become active
395	>	*/
396	>	public void testGetPoolSize() throws InterruptedException {
397	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
398	>	final CountDownLatch threadStarted = new CountDownLatch(1);
399	>	final CountDownLatch done = new CountDownLatch(1);
400	>	try (PoolCleaner cleaner = cleaner(p)) {
401	>	assertEquals(0, p.getPoolSize());
402	>	p.execute(new CheckedRunnable() {
403	>	public void realRun() throws InterruptedException {
404	>	threadStarted.countDown();
405	>	assertEquals(1, p.getPoolSize());
406	>	done.await();
407	>	}});
408	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
409	>	assertEquals(1, p.getPoolSize());
410	>	done.countDown();
411	>	}
412	>	}
413	>
414	>	/**
415	>	* getTaskCount increases, but doesn't overestimate, when tasks
416	>	* submitted
417	>	*/
418	>	public void testGetTaskCount() throws InterruptedException {
419	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
420	>	try (PoolCleaner cleaner = cleaner(p)) {
421	>	final CountDownLatch threadStarted = new CountDownLatch(1);
422	>	final CountDownLatch done = new CountDownLatch(1);
423	>	final int TASKS = 5;
424	>	assertEquals(0, p.getTaskCount());
425	>	for (int i = 0; i < TASKS; i++)
426	>	p.execute(new CheckedRunnable() {
427	>	public void realRun() throws InterruptedException {
428	>	threadStarted.countDown();
429	>	done.await();
430	>	}});
431	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
432	>	assertEquals(TASKS, p.getTaskCount());
433	>	done.countDown();
434	>	}
435	>	}
436	>
437	>	/**
438	>	* getThreadFactory returns factory in constructor if not set
439	>	*/
440	>	public void testGetThreadFactory() throws InterruptedException {
441	>	final ThreadFactory threadFactory = new SimpleThreadFactory();
442	>	final ScheduledThreadPoolExecutor p =
443	>	new ScheduledThreadPoolExecutor(1, threadFactory);
444	>	try (PoolCleaner cleaner = cleaner(p)) {
445	>	assertSame(threadFactory, p.getThreadFactory());
446	>	}
447	>	}
448	>
449	>	/**
450	>	* setThreadFactory sets the thread factory returned by getThreadFactory
451	>	*/
452	>	public void testSetThreadFactory() throws InterruptedException {
453	>	ThreadFactory threadFactory = new SimpleThreadFactory();
454	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
455	>	try (PoolCleaner cleaner = cleaner(p)) {
456	>	p.setThreadFactory(threadFactory);
457	>	assertSame(threadFactory, p.getThreadFactory());
458	>	}
459	>	}
460	>
461	>	/**
462	>	* setThreadFactory(null) throws NPE
463	>	*/
464	>	public void testSetThreadFactoryNull() throws InterruptedException {
465	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
466	>	try (PoolCleaner cleaner = cleaner(p)) {
467	>	try {
468	>	p.setThreadFactory(null);
469	>	shouldThrow();
470	>	} catch (NullPointerException success) {}
471	>	}
472	>	}
473	>
474	>	/**
475	>	* isShutdown is false before shutdown, true after
476	>	*/
477	>	public void testIsShutdown() {
478	>
479	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
480	>	try {
481	>	assertFalse(p.isShutdown());
482	>	}
483	>	finally {
484	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
485	>	}
486	>	assertTrue(p.isShutdown());
487	>	}
488	>
489	>	/**
490	>	* isTerminated is false before termination, true after
491	>	*/
492	>	public void testIsTerminated() throws InterruptedException {
493	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
494	>	try (PoolCleaner cleaner = cleaner(p)) {
495	>	final CountDownLatch threadStarted = new CountDownLatch(1);
496	>	final CountDownLatch done = new CountDownLatch(1);
497	>	assertFalse(p.isTerminated());
498	>	p.execute(new CheckedRunnable() {
499	>	public void realRun() throws InterruptedException {
500	>	assertFalse(p.isTerminated());
501	>	threadStarted.countDown();
502	>	done.await();
503	>	}});
504	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
505	>	assertFalse(p.isTerminating());
506	>	done.countDown();
507	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
508	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
509	>	assertTrue(p.isTerminated());
510	>	}
511	>	}
512	>
513	>	/**
514	>	* isTerminating is not true when running or when terminated
515	>	*/
516	>	public void testIsTerminating() throws InterruptedException {
517	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
518	>	final CountDownLatch threadStarted = new CountDownLatch(1);
519	>	final CountDownLatch done = new CountDownLatch(1);
520	>	try (PoolCleaner cleaner = cleaner(p)) {
521	>	assertFalse(p.isTerminating());
522	>	p.execute(new CheckedRunnable() {
523	>	public void realRun() throws InterruptedException {
524	>	assertFalse(p.isTerminating());
525	>	threadStarted.countDown();
526	>	done.await();
527	>	}});
528	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
529	>	assertFalse(p.isTerminating());
530	>	done.countDown();
531	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
532	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
533	>	assertTrue(p.isTerminated());
534	>	assertFalse(p.isTerminating());
535	>	}
536	>	}
537	>
538	>	/**
539	>	* getQueue returns the work queue, which contains queued tasks
540	>	*/
541	>	public void testGetQueue() throws InterruptedException {
542	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
543	>	try (PoolCleaner cleaner = cleaner(p)) {
544	>	final CountDownLatch threadStarted = new CountDownLatch(1);
545	>	final CountDownLatch done = new CountDownLatch(1);
546	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
547	>	for (int i = 0; i < tasks.length; i++) {
548	>	Runnable r = new CheckedRunnable() {
549	>	public void realRun() throws InterruptedException {
550	>	threadStarted.countDown();
551	>	done.await();
552	>	}};
553	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
554	>	}
555	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
556	>	BlockingQueue<Runnable> q = p.getQueue();
557	>	assertTrue(q.contains(tasks[tasks.length - 1]));
558	>	assertFalse(q.contains(tasks[0]));
559	>	done.countDown();
560	>	}
561	>	}
562	>
563	>	/**
564	>	* remove(task) removes queued task, and fails to remove active task
565	>	*/
566	>	public void testRemove() throws InterruptedException {
567	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
568	>	try (PoolCleaner cleaner = cleaner(p)) {
569	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
570	>	final CountDownLatch threadStarted = new CountDownLatch(1);
571	>	final CountDownLatch done = new CountDownLatch(1);
572	>	for (int i = 0; i < tasks.length; i++) {
573	>	Runnable r = new CheckedRunnable() {
574	>	public void realRun() throws InterruptedException {
575	>	threadStarted.countDown();
576	>	done.await();
577	>	}};
578	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
579	>	}
580	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
581	>	BlockingQueue<Runnable> q = p.getQueue();
582	>	assertFalse(p.remove((Runnable)tasks[0]));
583	>	assertTrue(q.contains((Runnable)tasks[4]));
584	>	assertTrue(q.contains((Runnable)tasks[3]));
585	>	assertTrue(p.remove((Runnable)tasks[4]));
586	>	assertFalse(p.remove((Runnable)tasks[4]));
587	>	assertFalse(q.contains((Runnable)tasks[4]));
588	>	assertTrue(q.contains((Runnable)tasks[3]));
589	>	assertTrue(p.remove((Runnable)tasks[3]));
590	>	assertFalse(q.contains((Runnable)tasks[3]));
591	>	done.countDown();
592	>	}
593	>	}
594	>
595	>	/**
596	>	* purge eventually removes cancelled tasks from the queue
597	>	*/
598	>	public void testPurge() throws InterruptedException {
599	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
600	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
601	>	for (int i = 0; i < tasks.length; i++)
602	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
603	>	LONG_DELAY_MS, MILLISECONDS);
604	>	try {
605	>	int max = tasks.length;
606	>	if (tasks[4].cancel(true)) --max;
607	>	if (tasks[3].cancel(true)) --max;
608	>	// There must eventually be an interference-free point at
609	>	// which purge will not fail. (At worst, when queue is empty.)
610	>	long startTime = System.nanoTime();
611	>	do {
612	>	p.purge();
613	>	long count = p.getTaskCount();
614	>	if (count == max)
615	>	return;
616	>	} while (millisElapsedSince(startTime) < MEDIUM_DELAY_MS);
617	>	fail("Purge failed to remove cancelled tasks");
618	>	} finally {
619	>	for (ScheduledFuture task : tasks)
620	>	task.cancel(true);
621	>	joinPool(p);
622	>	}
623		}
624
625	<	private static long SHORT_DELAY_MS = 100;
626	<	private static long MEDIUM_DELAY_MS = 1000;
627	<	private static long LONG_DELAY_MS = 10000;
628	<
629	<	static class MyRunnable implements Runnable {
630	<	volatile boolean waiting = true;
631	<	volatile boolean done = false;
632	<	public void run(){
633	<	try{
634	<	Thread.sleep(MEDIUM_DELAY_MS);
635	<	waiting = false;
636	<	done = true;
637	<	} catch(Exception e){}
638	<	}
639	<	}
640	<
641	<	static class MyCallable implements Callable {
642	<	volatile boolean waiting = true;
643	<	volatile boolean done = false;
644	<	public Object call(){
645	<	try{
646	<	Thread.sleep(MEDIUM_DELAY_MS);
647	<	waiting = false;
648	<	done = true;
649	<	}catch(Exception e){}
650	<	return Boolean.TRUE;
651	<	}
652	<	}
653	<
654	<	/**
655	<	*  Test to verify execute successfully runs the given Runnable
656	<	*/
657	<	public void testExecute(){
658	<	try{
659	<	MyRunnable runnable =new MyRunnable();
660	<	ScheduledExecutor one = new ScheduledExecutor(1);
661	<	one.execute(runnable);
662	<	Thread.sleep(100);
663	<	assertTrue(runnable.waiting);
664	<	one.shutdown();
665	<	// make sure the Runnable has time to complete
666	<	try{Thread.sleep(1010);}catch(InterruptedException e){}
667	<	assertFalse(runnable.waiting);
668	<	assertTrue(runnable.done);
669	<	one.shutdown();
670	<	}
671	<	catch(Exception e){
672	<	fail("unexpected exception");
673	<	}
674	<	}
675	<
676	<	/**
677	<	*  Test to verify schedule successfully runs the given Callable.
678	<	*  The waiting flag shows that the Callable is not started until
679	<	*  immediately.
680	<	*/
681	<	public void testSchedule1(){
682	<	try{
683	<	MyCallable callable = new MyCallable();
684	<	ScheduledExecutor one = new ScheduledExecutor(1);
685	<	Future f = one.schedule(callable, 500, TimeUnit.MILLISECONDS);
686	<	//      Thread.sleep(505);
687	<	assertTrue(callable.waiting);
688	<	Thread.sleep(2000);
689	<	assertTrue(callable.done);
690	<	assertEquals(Boolean.TRUE, f.get());
691	<	one.shutdown();
692	<	}catch(RejectedExecutionException e){}
693	<	catch(Exception e){}
694	<	}
695	<
696	<	/**
697	<	*  Another version of schedule, only using Runnable instead of Callable
698	<	*/
699	<	public void testSchedule3(){
700	<	try{
701	<	MyRunnable runnable = new MyRunnable();
702	<	ScheduledExecutor one = new ScheduledExecutor(1);
703	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
704	<	Thread.sleep(50);
705	<	assertTrue(runnable.waiting);
706	<	Thread.sleep(2000);
707	<	assertTrue(runnable.done);
708	<	one.shutdown();
709	<	} catch(Exception e){
710	<	fail("unexpected exception");
711	<	}
712	<	}
713	<
714	<	/**
715	<	*  The final version of schedule, using both long, TimeUnit and Runnable
716	<	*/
717	<	public void testSchedule4(){
718	<	try{
719	<	MyRunnable runnable = new MyRunnable();
720	<	ScheduledExecutor one = new ScheduledExecutor(1);
721	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
722	<	//      Thread.sleep(505);
723	<	assertTrue(runnable.waiting);
724	<	Thread.sleep(2000);
725	<	assertTrue(runnable.done);
726	<	one.shutdown();
727	<	} catch(Exception e){
728	<	fail("unexpected exception");
729	<	}
730	<	}
731	<
732	<
733	<	// exception tests
734	<
735	<	/**
736	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
737	<	*  This occurs on an attempt to schedule a task on a shutdown executor
738	<	*/
739	<	public void testSchedule1_RejectedExecutionException(){
740	<	try{
741	<	ScheduledExecutor se = new ScheduledExecutor(1);
742	<	se.shutdown();
743	<	se.schedule(new Runnable(){
744	<	public void run(){}
745	<	}, 10000, TimeUnit.MILLISECONDS);
746	<	fail("shoud throw");
747	<	}catch(RejectedExecutionException e){}
748	<	}
749	<
750	<	/**
751	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
752	<	*  This occurs on an attempt to schedule a task on a shutdown executor
753	<	*/
754	<	public void testSchedule2_RejectedExecutionException(){
755	<	try{
756	<	ScheduledExecutor se = new ScheduledExecutor(1);
757	<	se.shutdown();
758	<	se.schedule(new Callable(){
759	<	public Object call(){
760	<	return Boolean.TRUE;
761	<	}
762	<	}, (long)100, TimeUnit.SECONDS);
763	<	fail("should throw");
764	<	}catch(RejectedExecutionException e){}
765	<	}
766	<
767	<	/**
768	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
769	<	*  This occurs on an attempt to schedule a task on a shutdown executor
770	<	*/
771	<	public void testSchedule3_RejectedExecutionException(){
772	<	try{
773	<	ScheduledExecutor se = new ScheduledExecutor(1);
774	<	se.shutdown();
775	<	se.schedule(new Callable(){
776	<	public Object call(){
777	<	return Boolean.TRUE;
778	<	}
779	<	},  10000, TimeUnit.MILLISECONDS);
780	<	fail("should throw");
781	<	}catch(RejectedExecutionException e){}
782	<	}
783	<
784	<	/**
785	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
786	<	*  RejectedExecutionException.
787	<	*  This occurs on an attempt to schedule a task on a shutdown executor
788	<	*/
789	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
790	<	try{
791	<	ScheduledExecutor se = new ScheduledExecutor(1);
792	<	se.shutdown();
793	<	se.scheduleAtFixedRate(new Runnable(){
794	<	public void run(){}
795	<	}, 100, 100, TimeUnit.SECONDS);
796	<	fail("should throw");
797	<	}catch(RejectedExecutionException e){}
798	<	}
799	<
800	<	/**
801	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
802	<	*  RejectedExecutionException.
803	<	*  This occurs on an attempt to schedule a task on a shutdown executor
804	<	*/
805	<	public void testScheduleAtFixedRate2_RejectedExecutionException(){
806	<	try{
807	<	ScheduledExecutor se = new ScheduledExecutor(1);
808	<	se.shutdown();
809	<	se.scheduleAtFixedRate(new Runnable(){
810	<	public void run(){}
811	<	},  1, 100, TimeUnit.SECONDS);
812	<	fail("should throw");
813	<	}catch(RejectedExecutionException e){}
814	<	}
815	<
816	<	/**
817	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
818	<	*  RejectedExecutionException.
819	<	*  This occurs on an attempt to schedule a task on a shutdown executor
820	<	*/
821	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
822	<	try{
823	<	ScheduledExecutor se = new ScheduledExecutor(1);
824	<	se.shutdown();
825	<	se.scheduleWithFixedDelay(new Runnable(){
826	<	public void run(){}
827	<	}, 100, 100, TimeUnit.SECONDS);
828	<	fail("should throw");
829	<	}catch(RejectedExecutionException e){}
830	<	}
831	<
832	<	/**
833	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
834	<	*  RejectedExecutionException.
835	<	*  This occurs on an attempt to schedule a task on a shutdown executor
836	<	*/
837	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
838	<	try{
839	<	ScheduledExecutor se = new ScheduledExecutor(1);
840	<	se.shutdown();
841	<	se.scheduleWithFixedDelay(new Runnable(){
842	<	public void run(){}
843	<	},  1, 100, TimeUnit.SECONDS);
844	<	fail("should throw");
845	<	}catch(RejectedExecutionException e){}
846	<	}
847	<
848	<	/**
849	<	*  Test to verify execute throws RejectedExecutionException
850	<	*  This occurs on an attempt to schedule a task on a shutdown executor
851	<	*/
852	<	public void testExecute_RejectedExecutionException(){
853	<	try{
854	<	ScheduledExecutor se = new ScheduledExecutor(1);
855	<	se.shutdown();
856	<	se.execute(new Runnable(){
857	<	public void run(){}
858	<	});
859	<	fail("should throw");
860	<	}catch(RejectedExecutionException e){}
625	>	/**
626	>	* shutdownNow returns a list containing tasks that were not run,
627	>	* and those tasks are drained from the queue
628	>	*/
629	>	public void testShutdownNow() throws InterruptedException {
630	>	final int poolSize = 2;
631	>	final int count = 5;
632	>	final AtomicInteger ran = new AtomicInteger(0);
633	>	final ScheduledThreadPoolExecutor p =
634	>	new ScheduledThreadPoolExecutor(poolSize);
635	>	CountDownLatch threadsStarted = new CountDownLatch(poolSize);
636	>	Runnable waiter = new CheckedRunnable() { public void realRun() {
637	>	threadsStarted.countDown();
638	>	try {
639	>	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
640	>	} catch (InterruptedException success) {}
641	>	ran.getAndIncrement();
642	>	}};
643	>	for (int i = 0; i < count; i++)
644	>	p.execute(waiter);
645	>	assertTrue(threadsStarted.await(LONG_DELAY_MS, MILLISECONDS));
646	>	assertEquals(poolSize, p.getActiveCount());
647	>	assertEquals(0, p.getCompletedTaskCount());
648	>	final List<Runnable> queuedTasks;
649	>	try {
650	>	queuedTasks = p.shutdownNow();
651	>	} catch (SecurityException ok) {
652	>	return; // Allowed in case test doesn't have privs
653	>	}
654	>	assertTrue(p.isShutdown());
655	>	assertTrue(p.getQueue().isEmpty());
656	>	assertEquals(count - poolSize, queuedTasks.size());
657	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
658	>	assertTrue(p.isTerminated());
659	>	assertEquals(poolSize, ran.get());
660	>	assertEquals(poolSize, p.getCompletedTaskCount());
661	>	}
662	>
663	>	/**
664	>	* shutdownNow returns a list containing tasks that were not run,
665	>	* and those tasks are drained from the queue
666	>	*/
667	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
668	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
669	>	List<ScheduledFuture> tasks = new ArrayList<>();
670	>	for (int i = 0; i < 3; i++) {
671	>	Runnable r = new NoOpRunnable();
672	>	tasks.add(p.schedule(r, 9, SECONDS));
673	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
674	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
675	>	}
676	>	if (testImplementationDetails)
677	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
678	>	final List<Runnable> queuedTasks;
679	>	try {
680	>	queuedTasks = p.shutdownNow();
681	>	} catch (SecurityException ok) {
682	>	return; // Allowed in case test doesn't have privs
683	>	}
684	>	assertTrue(p.isShutdown());
685	>	assertTrue(p.getQueue().isEmpty());
686	>	if (testImplementationDetails)
687	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
688	>	assertEquals(tasks.size(), queuedTasks.size());
689	>	for (ScheduledFuture task : tasks) {
690	>	assertFalse(task.isDone());
691	>	assertFalse(task.isCancelled());
692	>	}
693	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
694	>	assertTrue(p.isTerminated());
695	>	}
696	>
697	>	/**
698	>	* By default, periodic tasks are cancelled at shutdown.
699	>	* By default, delayed tasks keep running after shutdown.
700	>	* Check that changing the default values work:
701	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
702	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
703	>	*/
704	>	public void testShutdown_cancellation() throws Exception {
705	>	Boolean[] allBooleans = { null, Boolean.FALSE, Boolean.TRUE };
706	>	for (Boolean policy : allBooleans)
707	>	{
708	>	final int poolSize = 2;
709	>	final ScheduledThreadPoolExecutor p
710	>	= new ScheduledThreadPoolExecutor(poolSize);
711	>	final boolean effectiveDelayedPolicy = (policy != Boolean.FALSE);
712	>	final boolean effectivePeriodicPolicy = (policy == Boolean.TRUE);
713	>	final boolean effectiveRemovePolicy = (policy == Boolean.TRUE);
714	>	if (policy != null) {
715	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(policy);
716	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(policy);
717	>	p.setRemoveOnCancelPolicy(policy);
718	>	}
719	>	assertEquals(effectiveDelayedPolicy,
720	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
721	>	assertEquals(effectivePeriodicPolicy,
722	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
723	>	assertEquals(effectiveRemovePolicy,
724	>	p.getRemoveOnCancelPolicy());
725	>	// Strategy: Wedge the pool with poolSize "blocker" threads
726	>	final AtomicInteger ran = new AtomicInteger(0);
727	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
728	>	final CountDownLatch unblock = new CountDownLatch(1);
729	>	final CountDownLatch periodicLatch1 = new CountDownLatch(2);
730	>	final CountDownLatch periodicLatch2 = new CountDownLatch(2);
731	>	Runnable task = new CheckedRunnable() { public void realRun()
732	>	throws InterruptedException {
733	>	poolBlocked.countDown();
734	>	assertTrue(unblock.await(LONG_DELAY_MS, MILLISECONDS));
735	>	ran.getAndIncrement();
736	>	}};
737	>	List<Future<?>> blockers = new ArrayList<>();
738	>	List<Future<?>> periodics = new ArrayList<>();
739	>	List<Future<?>> delayeds = new ArrayList<>();
740	>	for (int i = 0; i < poolSize; i++)
741	>	blockers.add(p.submit(task));
742	>	assertTrue(poolBlocked.await(LONG_DELAY_MS, MILLISECONDS));
743	>
744	>	periodics.add(p.scheduleAtFixedRate(countDowner(periodicLatch1),
745	>	1, 1, MILLISECONDS));
746	>	periodics.add(p.scheduleWithFixedDelay(countDowner(periodicLatch2),
747	>	1, 1, MILLISECONDS));
748	>	delayeds.add(p.schedule(task, 1, MILLISECONDS));
749	>
750	>	assertTrue(p.getQueue().containsAll(periodics));
751	>	assertTrue(p.getQueue().containsAll(delayeds));
752	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
753	>	assertTrue(p.isShutdown());
754	>	assertFalse(p.isTerminated());
755	>	for (Future<?> periodic : periodics) {
756	>	assertTrue(effectivePeriodicPolicy ^ periodic.isCancelled());
757	>	assertTrue(effectivePeriodicPolicy ^ periodic.isDone());
758	>	}
759	>	for (Future<?> delayed : delayeds) {
760	>	assertTrue(effectiveDelayedPolicy ^ delayed.isCancelled());
761	>	assertTrue(effectiveDelayedPolicy ^ delayed.isDone());
762	>	}
763	>	if (testImplementationDetails) {
764	>	assertEquals(effectivePeriodicPolicy,
765	>	p.getQueue().containsAll(periodics));
766	>	assertEquals(effectiveDelayedPolicy,
767	>	p.getQueue().containsAll(delayeds));
768	>	}
769	>	// Release all pool threads
770	>	unblock.countDown();
771	>
772	>	for (Future<?> delayed : delayeds) {
773	>	if (effectiveDelayedPolicy) {
774	>	assertNull(delayed.get());
775	>	}
776	>	}
777	>	if (effectivePeriodicPolicy) {
778	>	assertTrue(periodicLatch1.await(LONG_DELAY_MS, MILLISECONDS));
779	>	assertTrue(periodicLatch2.await(LONG_DELAY_MS, MILLISECONDS));
780	>	for (Future<?> periodic : periodics) {
781	>	assertTrue(periodic.cancel(false));
782	>	assertTrue(periodic.isCancelled());
783	>	assertTrue(periodic.isDone());
784	>	}
785	>	}
786	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
787	>	assertTrue(p.isTerminated());
788	>	assertEquals(2 + (effectiveDelayedPolicy ? 1 : 0), ran.get());
789	>	}}
790	>
791	>	/**
792	>	* completed submit of callable returns result
793	>	*/
794	>	public void testSubmitCallable() throws Exception {
795	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
796	>	try (PoolCleaner cleaner = cleaner(e)) {
797	>	Future<String> future = e.submit(new StringTask());
798	>	String result = future.get();
799	>	assertSame(TEST_STRING, result);
800	>	}
801	>	}
802	>
803	>	/**
804	>	* completed submit of runnable returns successfully
805	>	*/
806	>	public void testSubmitRunnable() throws Exception {
807	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
808	>	try (PoolCleaner cleaner = cleaner(e)) {
809	>	Future<?> future = e.submit(new NoOpRunnable());
810	>	future.get();
811	>	assertTrue(future.isDone());
812	>	}
813	>	}
814	>
815	>	/**
816	>	* completed submit of (runnable, result) returns result
817	>	*/
818	>	public void testSubmitRunnable2() throws Exception {
819	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
820	>	try (PoolCleaner cleaner = cleaner(e)) {
821	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
822	>	String result = future.get();
823	>	assertSame(TEST_STRING, result);
824	>	}
825	>	}
826	>
827	>	/**
828	>	* invokeAny(null) throws NPE
829	>	*/
830	>	public void testInvokeAny1() throws Exception {
831	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
832	>	try (PoolCleaner cleaner = cleaner(e)) {
833	>	try {
834	>	e.invokeAny(null);
835	>	shouldThrow();
836	>	} catch (NullPointerException success) {}
837	>	}
838	>	}
839	>
840	>	/**
841	>	* invokeAny(empty collection) throws IAE
842	>	*/
843	>	public void testInvokeAny2() throws Exception {
844	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
845	>	try (PoolCleaner cleaner = cleaner(e)) {
846	>	try {
847	>	e.invokeAny(new ArrayList<Callable<String>>());
848	>	shouldThrow();
849	>	} catch (IllegalArgumentException success) {}
850	>	}
851	>	}
852	>
853	>	/**
854	>	* invokeAny(c) throws NPE if c has null elements
855	>	*/
856	>	public void testInvokeAny3() throws Exception {
857	>	CountDownLatch latch = new CountDownLatch(1);
858	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
859	>	try (PoolCleaner cleaner = cleaner(e)) {
860	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
861	>	l.add(latchAwaitingStringTask(latch));
862	>	l.add(null);
863	>	try {
864	>	e.invokeAny(l);
865	>	shouldThrow();
866	>	} catch (NullPointerException success) {}
867	>	latch.countDown();
868	>	}
869	>	}
870	>
871	>	/**
872	>	* invokeAny(c) throws ExecutionException if no task completes
873	>	*/
874	>	public void testInvokeAny4() throws Exception {
875	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
876	>	try (PoolCleaner cleaner = cleaner(e)) {
877	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
878	>	l.add(new NPETask());
879	>	try {
880	>	e.invokeAny(l);
881	>	shouldThrow();
882	>	} catch (ExecutionException success) {
883	>	assertTrue(success.getCause() instanceof NullPointerException);
884	>	}
885	>	}
886	>	}
887	>
888	>	/**
889	>	* invokeAny(c) returns result of some task
890	>	*/
891	>	public void testInvokeAny5() throws Exception {
892	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
893	>	try (PoolCleaner cleaner = cleaner(e)) {
894	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
895	>	l.add(new StringTask());
896	>	l.add(new StringTask());
897	>	String result = e.invokeAny(l);
898	>	assertSame(TEST_STRING, result);
899	>	}
900	>	}
901	>
902	>	/**
903	>	* invokeAll(null) throws NPE
904	>	*/
905	>	public void testInvokeAll1() throws Exception {
906	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
907	>	try (PoolCleaner cleaner = cleaner(e)) {
908	>	try {
909	>	e.invokeAll(null);
910	>	shouldThrow();
911	>	} catch (NullPointerException success) {}
912	>	}
913	>	}
914	>
915	>	/**
916	>	* invokeAll(empty collection) returns empty collection
917	>	*/
918	>	public void testInvokeAll2() throws Exception {
919	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
920	>	try (PoolCleaner cleaner = cleaner(e)) {
921	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
922	>	assertTrue(r.isEmpty());
923	>	}
924	>	}
925	>
926	>	/**
927	>	* invokeAll(c) throws NPE if c has null elements
928	>	*/
929	>	public void testInvokeAll3() throws Exception {
930	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
931	>	try (PoolCleaner cleaner = cleaner(e)) {
932	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
933	>	l.add(new StringTask());
934	>	l.add(null);
935	>	try {
936	>	e.invokeAll(l);
937	>	shouldThrow();
938	>	} catch (NullPointerException success) {}
939	>	}
940	>	}
941	>
942	>	/**
943	>	* get of invokeAll(c) throws exception on failed task
944	>	*/
945	>	public void testInvokeAll4() throws Exception {
946	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
947	>	try (PoolCleaner cleaner = cleaner(e)) {
948	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
949	>	l.add(new NPETask());
950	>	List<Future<String>> futures = e.invokeAll(l);
951	>	assertEquals(1, futures.size());
952	>	try {
953	>	futures.get(0).get();
954	>	shouldThrow();
955	>	} catch (ExecutionException success) {
956	>	assertTrue(success.getCause() instanceof NullPointerException);
957	>	}
958	>	}
959	>	}
960	>
961	>	/**
962	>	* invokeAll(c) returns results of all completed tasks
963	>	*/
964	>	public void testInvokeAll5() throws Exception {
965	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
966	>	try (PoolCleaner cleaner = cleaner(e)) {
967	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
968	>	l.add(new StringTask());
969	>	l.add(new StringTask());
970	>	List<Future<String>> futures = e.invokeAll(l);
971	>	assertEquals(2, futures.size());
972	>	for (Future<String> future : futures)
973	>	assertSame(TEST_STRING, future.get());
974	>	}
975	>	}
976	>
977	>	/**
978	>	* timed invokeAny(null) throws NPE
979	>	*/
980	>	public void testTimedInvokeAny1() throws Exception {
981	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
982	>	try (PoolCleaner cleaner = cleaner(e)) {
983	>	try {
984	>	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
985	>	shouldThrow();
986	>	} catch (NullPointerException success) {}
987	>	}
988	>	}
989	>
990	>	/**
991	>	* timed invokeAny(,,null) throws NPE
992	>	*/
993	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
994	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
995	>	try (PoolCleaner cleaner = cleaner(e)) {
996	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
997	>	l.add(new StringTask());
998	>	try {
999	>	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1000	>	shouldThrow();
1001	>	} catch (NullPointerException success) {}
1002	>	}
1003	>	}
1004	>
1005	>	/**
1006	>	* timed invokeAny(empty collection) throws IAE
1007	>	*/
1008	>	public void testTimedInvokeAny2() throws Exception {
1009	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1010	>	try (PoolCleaner cleaner = cleaner(e)) {
1011	>	try {
1012	>	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1013	>	shouldThrow();
1014	>	} catch (IllegalArgumentException success) {}
1015	>	}
1016	>	}
1017	>
1018	>	/**
1019	>	* timed invokeAny(c) throws NPE if c has null elements
1020	>	*/
1021	>	public void testTimedInvokeAny3() throws Exception {
1022	>	CountDownLatch latch = new CountDownLatch(1);
1023	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1024	>	try (PoolCleaner cleaner = cleaner(e)) {
1025	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1026	>	l.add(latchAwaitingStringTask(latch));
1027	>	l.add(null);
1028	>	try {
1029	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1030	>	shouldThrow();
1031	>	} catch (NullPointerException success) {}
1032	>	latch.countDown();
1033	>	}
1034	>	}
1035	>
1036	>	/**
1037	>	* timed invokeAny(c) throws ExecutionException if no task completes
1038	>	*/
1039	>	public void testTimedInvokeAny4() throws Exception {
1040	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1041	>	try (PoolCleaner cleaner = cleaner(e)) {
1042	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1043	>	l.add(new NPETask());
1044	>	try {
1045	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1046	>	shouldThrow();
1047	>	} catch (ExecutionException success) {
1048	>	assertTrue(success.getCause() instanceof NullPointerException);
1049	>	}
1050	>	}
1051	>	}
1052	>
1053	>	/**
1054	>	* timed invokeAny(c) returns result of some task
1055	>	*/
1056	>	public void testTimedInvokeAny5() throws Exception {
1057	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1058	>	try (PoolCleaner cleaner = cleaner(e)) {
1059	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1060	>	l.add(new StringTask());
1061	>	l.add(new StringTask());
1062	>	String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1063	>	assertSame(TEST_STRING, result);
1064	>	}
1065	>	}
1066	>
1067	>	/**
1068	>	* timed invokeAll(null) throws NPE
1069	>	*/
1070	>	public void testTimedInvokeAll1() throws Exception {
1071	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1072	>	try (PoolCleaner cleaner = cleaner(e)) {
1073	>	try {
1074	>	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1075	>	shouldThrow();
1076	>	} catch (NullPointerException success) {}
1077	>	}
1078	>	}
1079	>
1080	>	/**
1081	>	* timed invokeAll(,,null) throws NPE
1082	>	*/
1083	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1084	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1085	>	try (PoolCleaner cleaner = cleaner(e)) {
1086	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1087	>	l.add(new StringTask());
1088	>	try {
1089	>	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1090	>	shouldThrow();
1091	>	} catch (NullPointerException success) {}
1092	>	}
1093	>	}
1094	>
1095	>	/**
1096	>	* timed invokeAll(empty collection) returns empty collection
1097	>	*/
1098	>	public void testTimedInvokeAll2() throws Exception {
1099	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1100	>	try (PoolCleaner cleaner = cleaner(e)) {
1101	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(),
1102	>	MEDIUM_DELAY_MS, MILLISECONDS);
1103	>	assertTrue(r.isEmpty());
1104	>	}
1105	>	}
1106	>
1107	>	/**
1108	>	* timed invokeAll(c) throws NPE if c has null elements
1109	>	*/
1110	>	public void testTimedInvokeAll3() throws Exception {
1111	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1112	>	try (PoolCleaner cleaner = cleaner(e)) {
1113	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1114	>	l.add(new StringTask());
1115	>	l.add(null);
1116	>	try {
1117	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1118	>	shouldThrow();
1119	>	} catch (NullPointerException success) {}
1120	>	}
1121	>	}
1122	>
1123	>	/**
1124	>	* get of element of invokeAll(c) throws exception on failed task
1125	>	*/
1126	>	public void testTimedInvokeAll4() throws Exception {
1127	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1128	>	try (PoolCleaner cleaner = cleaner(e)) {
1129	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1130	>	l.add(new NPETask());
1131	>	List<Future<String>> futures =
1132	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1133	>	assertEquals(1, futures.size());
1134	>	try {
1135	>	futures.get(0).get();
1136	>	shouldThrow();
1137	>	} catch (ExecutionException success) {
1138	>	assertTrue(success.getCause() instanceof NullPointerException);
1139	>	}
1140	>	}
1141	>	}
1142	>
1143	>	/**
1144	>	* timed invokeAll(c) returns results of all completed tasks
1145	>	*/
1146	>	public void testTimedInvokeAll5() throws Exception {
1147	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1148	>	try (PoolCleaner cleaner = cleaner(e)) {
1149	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1150	>	l.add(new StringTask());
1151	>	l.add(new StringTask());
1152	>	List<Future<String>> futures =
1153	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1154	>	assertEquals(2, futures.size());
1155	>	for (Future<String> future : futures)
1156	>	assertSame(TEST_STRING, future.get());
1157	>	}
1158	>	}
1159	>
1160	>	/**
1161	>	* timed invokeAll(c) cancels tasks not completed by timeout
1162	>	*/
1163	>	public void testTimedInvokeAll6() throws Exception {
1164	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1165	>	try (PoolCleaner cleaner = cleaner(e)) {
1166	>	for (long timeout = timeoutMillis();;) {
1167	>	List<Callable<String>> tasks = new ArrayList<>();
1168	>	tasks.add(new StringTask("0"));
1169	>	tasks.add(Executors.callable(new LongPossiblyInterruptedRunnable(), TEST_STRING));
1170	>	tasks.add(new StringTask("2"));
1171	>	long startTime = System.nanoTime();
1172	>	List<Future<String>> futures =
1173	>	e.invokeAll(tasks, timeout, MILLISECONDS);
1174	>	assertEquals(tasks.size(), futures.size());
1175	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1176	>	for (Future future : futures)
1177	>	assertTrue(future.isDone());
1178	>	assertTrue(futures.get(1).isCancelled());
1179	>	try {
1180	>	assertEquals("0", futures.get(0).get());
1181	>	assertEquals("2", futures.get(2).get());
1182	>	break;
1183	>	} catch (CancellationException retryWithLongerTimeout) {
1184	>	timeout *= 2;
1185	>	if (timeout >= LONG_DELAY_MS / 2)
1186	>	fail("expected exactly one task to be cancelled");
1187	>	}
1188	>	}
1189	>	}
1190		}
1191
1192		}

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