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

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.2 by dl, Sun Sep 7 23:50:09 2003 UTC vs.
Revision 1.90 by jsr166, Tue Mar 28 23:21:24 2017 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.*;
11	<	import java.util.concurrent.*;
12	<
13	<	public class ScheduledExecutorTest extends TestCase{
14	<
15	<	boolean flag = false;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	>	import static java.util.concurrent.TimeUnit.SECONDS;
12	>
13	>	import java.util.ArrayList;
14	>	import java.util.HashSet;
15	>	import java.util.List;
16	>	import java.util.concurrent.BlockingQueue;
17	>	import java.util.concurrent.Callable;
18	>	import java.util.concurrent.CancellationException;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.ExecutionException;
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.ThreadLocalRandom;
28	>	import java.util.concurrent.ThreadPoolExecutor;
29	>	import java.util.concurrent.atomic.AtomicBoolean;
30	>	import java.util.concurrent.atomic.AtomicInteger;
31	>	import java.util.concurrent.atomic.AtomicLong;
32	>	import java.util.stream.Stream;
33
34	+	import junit.framework.Test;
35	+	import junit.framework.TestSuite;
36	+
37	+	public class ScheduledExecutorTest extends JSR166TestCase {
38		public static void main(String[] args) {
39	<	junit.textui.TestRunner.run (suite());
39	>	main(suite(), args);
40		}
19	–
20	–
41		public static Test suite() {
42	<	return new TestSuite(ScheduledExecutorTest.class);
42	>	return new TestSuite(ScheduledExecutorTest.class);
43		}
44
45	<	private static long SHORT_DELAY_MS = 100;
46	<	private static long MEDIUM_DELAY_MS = 1000;
47	<	private static long LONG_DELAY_MS = 10000;
45	>	/**
46	>	* execute successfully executes a runnable
47	>	*/
48	>	public void testExecute() throws InterruptedException {
49	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
50	>	try (PoolCleaner cleaner = cleaner(p)) {
51	>	final CountDownLatch done = new CountDownLatch(1);
52	>	final Runnable task = new CheckedRunnable() {
53	>	public void realRun() { done.countDown(); }};
54	>	p.execute(task);
55	>	await(done);
56	>	}
57	>	}
58	>
59	>	/**
60	>	* delayed schedule of callable successfully executes after delay
61	>	*/
62	>	public void testSchedule1() throws Exception {
63	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
64	>	try (PoolCleaner cleaner = cleaner(p)) {
65	>	final long startTime = System.nanoTime();
66	>	final CountDownLatch done = new CountDownLatch(1);
67	>	Callable task = new CheckedCallable<Boolean>() {
68	>	public Boolean realCall() {
69	>	done.countDown();
70	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
71	>	return Boolean.TRUE;
72	>	}};
73	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
74	>	assertSame(Boolean.TRUE, f.get());
75	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
76	>	assertTrue(done.await(0L, MILLISECONDS));
77	>	}
78	>	}
79	>
80	>	/**
81	>	* delayed schedule of runnable successfully executes after delay
82	>	*/
83	>	public void testSchedule3() throws Exception {
84	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
85	>	try (PoolCleaner cleaner = cleaner(p)) {
86	>	final long startTime = System.nanoTime();
87	>	final CountDownLatch done = new CountDownLatch(1);
88	>	Runnable task = new CheckedRunnable() {
89	>	public void realRun() {
90	>	done.countDown();
91	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
92	>	}};
93	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
94	>	await(done);
95	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
96	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
97	>	}
98	>	}
99	>
100	>	/**
101	>	* scheduleAtFixedRate executes runnable after given initial delay
102	>	*/
103	>	public void testSchedule4() throws Exception {
104	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
105	>	try (PoolCleaner cleaner = cleaner(p)) {
106	>	final long startTime = System.nanoTime();
107	>	final CountDownLatch done = new CountDownLatch(1);
108	>	Runnable task = new CheckedRunnable() {
109	>	public void realRun() {
110	>	done.countDown();
111	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
112	>	}};
113	>	ScheduledFuture f =
114	>	p.scheduleAtFixedRate(task, timeoutMillis(),
115	>	LONG_DELAY_MS, MILLISECONDS);
116	>	await(done);
117	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
118	>	f.cancel(true);
119	>	}
120	>	}
121	>
122	>	/**
123	>	* scheduleWithFixedDelay executes runnable after given initial delay
124	>	*/
125	>	public void testSchedule5() throws Exception {
126	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
127	>	try (PoolCleaner cleaner = cleaner(p)) {
128	>	final long startTime = System.nanoTime();
129	>	final CountDownLatch done = new CountDownLatch(1);
130	>	Runnable task = new CheckedRunnable() {
131	>	public void realRun() {
132	>	done.countDown();
133	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
134	>	}};
135	>	ScheduledFuture f =
136	>	p.scheduleWithFixedDelay(task, timeoutMillis(),
137	>	LONG_DELAY_MS, MILLISECONDS);
138	>	await(done);
139	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
140	>	f.cancel(true);
141	>	}
142	>	}
143	>
144	>	static class RunnableCounter implements Runnable {
145	>	AtomicInteger count = new AtomicInteger(0);
146	>	public void run() { count.getAndIncrement(); }
147	>	}
148	>
149	>	/**
150	>	* scheduleAtFixedRate executes series of tasks at given rate.
151	>	* Eventually, it must hold that:
152	>	*   cycles - 1 <= elapsedMillis/delay < cycles
153	>	*/
154	>	public void testFixedRateSequence() throws InterruptedException {
155	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
156	>	try (PoolCleaner cleaner = cleaner(p)) {
157	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
158	>	final long startTime = System.nanoTime();
159	>	final int cycles = 8;
160	>	final CountDownLatch done = new CountDownLatch(cycles);
161	>	final Runnable task = new CheckedRunnable() {
162	>	public void realRun() { done.countDown(); }};
163	>	final ScheduledFuture periodicTask =
164	>	p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
165	>	final int totalDelayMillis = (cycles - 1) * delay;
166	>	await(done, totalDelayMillis + LONG_DELAY_MS);
167	>	periodicTask.cancel(true);
168	>	final long elapsedMillis = millisElapsedSince(startTime);
169	>	assertTrue(elapsedMillis >= totalDelayMillis);
170	>	if (elapsedMillis <= cycles * delay)
171	>	return;
172	>	// else retry with longer delay
173	>	}
174	>	fail("unexpected execution rate");
175	>	}
176	>	}
177
178	<	static class MyRunnable implements Runnable {
179	<	volatile boolean waiting = true;
180	<	volatile boolean done = false;
181	<	public void run(){
182	<	try{
183	<	Thread.sleep(SHORT_DELAY_MS);
184	<	waiting = false;
185	<	done = true;
186	<	} catch(Exception e){
178	>	/**
179	>	* scheduleWithFixedDelay executes series of tasks with given period.
180	>	* Eventually, it must hold that each task starts at least delay and at
181	>	* most 2 * delay after the termination of the previous task.
182	>	*/
183	>	public void testFixedDelaySequence() throws InterruptedException {
184	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
185	>	try (PoolCleaner cleaner = cleaner(p)) {
186	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
187	>	final long startTime = System.nanoTime();
188	>	final AtomicLong previous = new AtomicLong(startTime);
189	>	final AtomicBoolean tryLongerDelay = new AtomicBoolean(false);
190	>	final int cycles = 8;
191	>	final CountDownLatch done = new CountDownLatch(cycles);
192	>	final int d = delay;
193	>	final Runnable task = new CheckedRunnable() {
194	>	public void realRun() {
195	>	long now = System.nanoTime();
196	>	long elapsedMillis
197	>	= NANOSECONDS.toMillis(now - previous.get());
198	>	if (done.getCount() == cycles) { // first execution
199	>	if (elapsedMillis >= d)
200	>	tryLongerDelay.set(true);
201	>	} else {
202	>	assertTrue(elapsedMillis >= d);
203	>	if (elapsedMillis >= 2 * d)
204	>	tryLongerDelay.set(true);
205	>	}
206	>	previous.set(now);
207	>	done.countDown();
208	>	}};
209	>	final ScheduledFuture periodicTask =
210	>	p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
211	>	final int totalDelayMillis = (cycles - 1) * delay;
212	>	await(done, totalDelayMillis + cycles * LONG_DELAY_MS);
213	>	periodicTask.cancel(true);
214	>	final long elapsedMillis = millisElapsedSince(startTime);
215	>	assertTrue(elapsedMillis >= totalDelayMillis);
216	>	if (!tryLongerDelay.get())
217	>	return;
218	>	// else retry with longer delay
219		}
220	+	fail("unexpected execution rate");
221		}
222		}
223
224	<	static class MyCallable implements Callable {
225	<	volatile boolean waiting = true;
226	<	volatile boolean done = false;
227	<	public Object call(){
228	<	try{
229	<	Thread.sleep(SHORT_DELAY_MS);
230	<	waiting = false;
231	<	done = true;
232	<	}catch(Exception e){}
233	<	return Boolean.TRUE;
224	>	/**
225	>	* execute(null) throws NPE
226	>	*/
227	>	public void testExecuteNull() throws InterruptedException {
228	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
229	>	try (PoolCleaner cleaner = cleaner(p)) {
230	>	try {
231	>	p.execute(null);
232	>	shouldThrow();
233	>	} catch (NullPointerException success) {}
234		}
235		}
236
237	<	public Runnable newRunnable(){
238	<	return new Runnable(){
239	<	public void run(){
240	<	try{Thread.sleep(SHORT_DELAY_MS);
241	<	} catch(Exception e){
242	<	}
243	<	}
244	<	};
237	>	/**
238	>	* schedule(null) throws NPE
239	>	*/
240	>	public void testScheduleNull() throws InterruptedException {
241	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
242	>	try (PoolCleaner cleaner = cleaner(p)) {
243	>	try {
244	>	TrackedCallable callable = null;
245	>	Future f = p.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
246	>	shouldThrow();
247	>	} catch (NullPointerException success) {}
248	>	}
249	>	}
250	>
251	>	/**
252	>	* execute throws RejectedExecutionException if shutdown
253	>	*/
254	>	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
255	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
256	>	try (PoolCleaner cleaner = cleaner(p)) {
257	>	try {
258	>	p.shutdown();
259	>	p.schedule(new NoOpRunnable(),
260	>	MEDIUM_DELAY_MS, MILLISECONDS);
261	>	shouldThrow();
262	>	} catch (RejectedExecutionException success) {
263	>	} catch (SecurityException ok) {}
264	>	}
265		}
266
267	<	public Runnable newNoopRunnable() {
268	<	return new Runnable(){
269	<	public void run(){
270	<	}
271	<	};
267	>	/**
268	>	* schedule throws RejectedExecutionException if shutdown
269	>	*/
270	>	public void testSchedule2_RejectedExecutionException() throws InterruptedException {
271	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
272	>	try (PoolCleaner cleaner = cleaner(p)) {
273	>	try {
274	>	p.shutdown();
275	>	p.schedule(new NoOpCallable(),
276	>	MEDIUM_DELAY_MS, MILLISECONDS);
277	>	shouldThrow();
278	>	} catch (RejectedExecutionException success) {
279	>	} catch (SecurityException ok) {}
280	>	}
281		}
282
283		/**
284	<	*  Test to verify execute successfully runs the given Runnable
284	>	* schedule callable throws RejectedExecutionException if shutdown
285		*/
286	<	public void testExecute(){
287	<	try{
288	<	MyRunnable runnable =new MyRunnable();
289	<	ScheduledExecutor one = new ScheduledExecutor(1);
290	<	one.execute(runnable);
291	<	Thread.sleep(SHORT_DELAY_MS/2);
292	<	assertTrue(runnable.waiting);
293	<	one.shutdown();
294	<	try{
295	<	Thread.sleep(MEDIUM_DELAY_MS);
296	<	} catch(InterruptedException e){
297	<	fail("unexpected exception");
286	>	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
287	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
288	>	try (PoolCleaner cleaner = cleaner(p)) {
289	>	try {
290	>	p.shutdown();
291	>	p.schedule(new NoOpCallable(),
292	>	MEDIUM_DELAY_MS, MILLISECONDS);
293	>	shouldThrow();
294	>	} catch (RejectedExecutionException success) {
295	>	} catch (SecurityException ok) {}
296	>	}
297	>	}
298	>
299	>	/**
300	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
301	>	*/
302	>	public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
303	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
304	>	try (PoolCleaner cleaner = cleaner(p)) {
305	>	try {
306	>	p.shutdown();
307	>	p.scheduleAtFixedRate(new NoOpRunnable(),
308	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
309	>	shouldThrow();
310	>	} catch (RejectedExecutionException success) {
311	>	} catch (SecurityException ok) {}
312	>	}
313	>	}
314	>
315	>	/**
316	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
317	>	*/
318	>	public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
319	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
320	>	try (PoolCleaner cleaner = cleaner(p)) {
321	>	try {
322	>	p.shutdown();
323	>	p.scheduleWithFixedDelay(new NoOpRunnable(),
324	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
325	>	shouldThrow();
326	>	} catch (RejectedExecutionException success) {
327	>	} catch (SecurityException ok) {}
328	>	}
329	>	}
330	>
331	>	/**
332	>	* getActiveCount increases but doesn't overestimate, when a
333	>	* thread becomes active
334	>	*/
335	>	public void testGetActiveCount() throws InterruptedException {
336	>	final CountDownLatch done = new CountDownLatch(1);
337	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
338	>	try (PoolCleaner cleaner = cleaner(p, done)) {
339	>	final CountDownLatch threadStarted = new CountDownLatch(1);
340	>	assertEquals(0, p.getActiveCount());
341	>	p.execute(new CheckedRunnable() {
342	>	public void realRun() throws InterruptedException {
343	>	threadStarted.countDown();
344	>	assertEquals(1, p.getActiveCount());
345	>	await(done);
346	>	}});
347	>	await(threadStarted);
348	>	assertEquals(1, p.getActiveCount());
349	>	}
350	>	}
351	>
352	>	/**
353	>	* getCompletedTaskCount increases, but doesn't overestimate,
354	>	* when tasks complete
355	>	*/
356	>	public void testGetCompletedTaskCount() throws InterruptedException {
357	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
358	>	try (PoolCleaner cleaner = cleaner(p)) {
359	>	final CountDownLatch threadStarted = new CountDownLatch(1);
360	>	final CountDownLatch threadProceed = new CountDownLatch(1);
361	>	final CountDownLatch threadDone = new CountDownLatch(1);
362	>	assertEquals(0, p.getCompletedTaskCount());
363	>	p.execute(new CheckedRunnable() {
364	>	public void realRun() throws InterruptedException {
365	>	threadStarted.countDown();
366	>	assertEquals(0, p.getCompletedTaskCount());
367	>	await(threadProceed);
368	>	threadDone.countDown();
369	>	}});
370	>	await(threadStarted);
371	>	assertEquals(0, p.getCompletedTaskCount());
372	>	threadProceed.countDown();
373	>	await(threadDone);
374	>	long startTime = System.nanoTime();
375	>	while (p.getCompletedTaskCount() != 1) {
376	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
377	>	fail("timed out");
378	>	Thread.yield();
379	>	}
380	>	}
381	>	}
382	>
383	>	/**
384	>	* getCorePoolSize returns size given in constructor if not otherwise set
385	>	*/
386	>	public void testGetCorePoolSize() throws InterruptedException {
387	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
388	>	try (PoolCleaner cleaner = cleaner(p)) {
389	>	assertEquals(1, p.getCorePoolSize());
390	>	}
391	>	}
392	>
393	>	/**
394	>	* getLargestPoolSize increases, but doesn't overestimate, when
395	>	* multiple threads active
396	>	*/
397	>	public void testGetLargestPoolSize() throws InterruptedException {
398	>	final int THREADS = 3;
399	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
400	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
401	>	final CountDownLatch done = new CountDownLatch(1);
402	>	try (PoolCleaner cleaner = cleaner(p, done)) {
403	>	assertEquals(0, p.getLargestPoolSize());
404	>	for (int i = 0; i < THREADS; i++)
405	>	p.execute(new CheckedRunnable() {
406	>	public void realRun() throws InterruptedException {
407	>	threadsStarted.countDown();
408	>	await(done);
409	>	assertEquals(THREADS, p.getLargestPoolSize());
410	>	}});
411	>	await(threadsStarted);
412	>	assertEquals(THREADS, p.getLargestPoolSize());
413	>	}
414	>	assertEquals(THREADS, p.getLargestPoolSize());
415	>	}
416	>
417	>	/**
418	>	* getPoolSize increases, but doesn't overestimate, when threads
419	>	* become active
420	>	*/
421	>	public void testGetPoolSize() throws InterruptedException {
422	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
423	>	final CountDownLatch threadStarted = new CountDownLatch(1);
424	>	final CountDownLatch done = new CountDownLatch(1);
425	>	try (PoolCleaner cleaner = cleaner(p, done)) {
426	>	assertEquals(0, p.getPoolSize());
427	>	p.execute(new CheckedRunnable() {
428	>	public void realRun() throws InterruptedException {
429	>	threadStarted.countDown();
430	>	assertEquals(1, p.getPoolSize());
431	>	await(done);
432	>	}});
433	>	await(threadStarted);
434	>	assertEquals(1, p.getPoolSize());
435	>	}
436	>	}
437	>
438	>	/**
439	>	* getTaskCount increases, but doesn't overestimate, when tasks
440	>	* submitted
441	>	*/
442	>	public void testGetTaskCount() throws InterruptedException {
443	>	final int TASKS = 3;
444	>	final CountDownLatch done = new CountDownLatch(1);
445	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
446	>	try (PoolCleaner cleaner = cleaner(p, done)) {
447	>	final CountDownLatch threadStarted = new CountDownLatch(1);
448	>	assertEquals(0, p.getTaskCount());
449	>	assertEquals(0, p.getCompletedTaskCount());
450	>	p.execute(new CheckedRunnable() {
451	>	public void realRun() throws InterruptedException {
452	>	threadStarted.countDown();
453	>	await(done);
454	>	}});
455	>	await(threadStarted);
456	>	assertEquals(1, p.getTaskCount());
457	>	assertEquals(0, p.getCompletedTaskCount());
458	>	for (int i = 0; i < TASKS; i++) {
459	>	assertEquals(1 + i, p.getTaskCount());
460	>	p.execute(new CheckedRunnable() {
461	>	public void realRun() throws InterruptedException {
462	>	threadStarted.countDown();
463	>	assertEquals(1 + TASKS, p.getTaskCount());
464	>	await(done);
465	>	}});
466		}
467	<	assertFalse(runnable.waiting);
468	<	assertTrue(runnable.done);
469	<	one.shutdown();
467	>	assertEquals(1 + TASKS, p.getTaskCount());
468	>	assertEquals(0, p.getCompletedTaskCount());
469	>	}
470	>	assertEquals(1 + TASKS, p.getTaskCount());
471	>	assertEquals(1 + TASKS, p.getCompletedTaskCount());
472	>	}
473	>
474	>	/**
475	>	* getThreadFactory returns factory in constructor if not set
476	>	*/
477	>	public void testGetThreadFactory() throws InterruptedException {
478	>	final ThreadFactory threadFactory = new SimpleThreadFactory();
479	>	final ScheduledThreadPoolExecutor p =
480	>	new ScheduledThreadPoolExecutor(1, threadFactory);
481	>	try (PoolCleaner cleaner = cleaner(p)) {
482	>	assertSame(threadFactory, p.getThreadFactory());
483		}
484	<	catch(Exception e){
485	<	fail("unexpected exception");
484	>	}
485	>
486	>	/**
487	>	* setThreadFactory sets the thread factory returned by getThreadFactory
488	>	*/
489	>	public void testSetThreadFactory() throws InterruptedException {
490	>	ThreadFactory threadFactory = new SimpleThreadFactory();
491	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
492	>	try (PoolCleaner cleaner = cleaner(p)) {
493	>	p.setThreadFactory(threadFactory);
494	>	assertSame(threadFactory, p.getThreadFactory());
495		}
496		}
497
498		/**
499	<	*  Test to verify schedule successfully runs the given Callable.
99	<	*  The waiting flag shows that the Callable is not started until
100	<	*  immediately.
499	>	* setThreadFactory(null) throws NPE
500		*/
501	<	public void testSchedule1(){
502	<	try{
503	<	MyCallable callable = new MyCallable();
504	<	ScheduledExecutor one = new ScheduledExecutor(1);
505	<	Future f = one.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
506	<	assertTrue(callable.waiting);
507	<	Thread.sleep(MEDIUM_DELAY_MS);
109	<	assertTrue(callable.done);
110	<	assertEquals(Boolean.TRUE, f.get());
111	<	one.shutdown();
112	<	}catch(RejectedExecutionException e){}
113	<	catch(Exception e){
114	<	fail("unexpected exception");
501	>	public void testSetThreadFactoryNull() throws InterruptedException {
502	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
503	>	try (PoolCleaner cleaner = cleaner(p)) {
504	>	try {
505	>	p.setThreadFactory(null);
506	>	shouldThrow();
507	>	} catch (NullPointerException success) {}
508		}
509		}
510
511		/**
512	<	*  Another version of schedule, only using Runnable instead of Callable
512	>	* The default rejected execution handler is AbortPolicy.
513		*/
514	<	public void testSchedule3(){
515	<	try{
516	<	MyRunnable runnable = new MyRunnable();
517	<	ScheduledExecutor one = new ScheduledExecutor(1);
518	<	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
126	<	Thread.sleep(SHORT_DELAY_MS/2);
127	<	assertTrue(runnable.waiting);
128	<	Thread.sleep(MEDIUM_DELAY_MS);
129	<	assertTrue(runnable.done);
130	<	one.shutdown();
131	<	} catch(Exception e){
132	<	fail("unexpected exception");
514	>	public void testDefaultRejectedExecutionHandler() {
515	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
516	>	try (PoolCleaner cleaner = cleaner(p)) {
517	>	assertTrue(p.getRejectedExecutionHandler()
518	>	instanceof ThreadPoolExecutor.AbortPolicy);
519		}
520		}
521	<
521	>
522		/**
523	<	*  The final version of schedule, using both long, TimeUnit and Runnable
523	>	* isShutdown is false before shutdown, true after
524		*/
525	<	public void testSchedule4(){
526	<	try{
527	<	MyRunnable runnable = new MyRunnable();
528	<	ScheduledExecutor one = new ScheduledExecutor(1);
529	<	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
530	<	//      Thread.sleep(505);
531	<	assertTrue(runnable.waiting);
532	<	Thread.sleep(MEDIUM_DELAY_MS);
147	<	assertTrue(runnable.done);
148	<	one.shutdown();
149	<	} catch(Exception e){
150	<	fail("unexpected exception");
525	>	public void testIsShutdown() {
526	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
527	>	assertFalse(p.isShutdown());
528	>	try (PoolCleaner cleaner = cleaner(p)) {
529	>	try {
530	>	p.shutdown();
531	>	assertTrue(p.isShutdown());
532	>	} catch (SecurityException ok) {}
533		}
534		}
153	–
154	–
155	–	// exception tests
535
536		/**
537	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
159	<	*  This occurs on an attempt to schedule a task on a shutdown executor
537	>	* isTerminated is false before termination, true after
538		*/
539	<	public void testSchedule1_RejectedExecutionException(){
540	<	try{
541	<	ScheduledExecutor se = new ScheduledExecutor(1);
542	<	se.shutdown();
543	<	se.schedule(new Runnable(){
544	<	public void run(){}
545	<	}, 10000, TimeUnit.MILLISECONDS);
546	<	fail("shoud throw");
547	<	}catch(RejectedExecutionException e){}
539	>	public void testIsTerminated() throws InterruptedException {
540	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
541	>	try (PoolCleaner cleaner = cleaner(p)) {
542	>	final CountDownLatch threadStarted = new CountDownLatch(1);
543	>	final CountDownLatch done = new CountDownLatch(1);
544	>	assertFalse(p.isTerminated());
545	>	p.execute(new CheckedRunnable() {
546	>	public void realRun() throws InterruptedException {
547	>	assertFalse(p.isTerminated());
548	>	threadStarted.countDown();
549	>	await(done);
550	>	}});
551	>	await(threadStarted);
552	>	assertFalse(p.isTerminating());
553	>	done.countDown();
554	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
555	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
556	>	assertTrue(p.isTerminated());
557	>	}
558		}
559
560		/**
561	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
174	<	*  This occurs on an attempt to schedule a task on a shutdown executor
561	>	* isTerminating is not true when running or when terminated
562		*/
563	<	public void testSchedule2_RejectedExecutionException(){
564	<	try{
565	<	ScheduledExecutor se = new ScheduledExecutor(1);
566	<	se.shutdown();
567	<	se.schedule(new Callable(){
568	<	public Object call(){
569	<	return Boolean.TRUE;
570	<	}
571	<	}, (long)100, TimeUnit.SECONDS);
572	<	fail("should throw");
573	<	}catch(RejectedExecutionException e){}
563	>	public void testIsTerminating() throws InterruptedException {
564	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
565	>	final CountDownLatch threadStarted = new CountDownLatch(1);
566	>	final CountDownLatch done = new CountDownLatch(1);
567	>	try (PoolCleaner cleaner = cleaner(p)) {
568	>	assertFalse(p.isTerminating());
569	>	p.execute(new CheckedRunnable() {
570	>	public void realRun() throws InterruptedException {
571	>	assertFalse(p.isTerminating());
572	>	threadStarted.countDown();
573	>	await(done);
574	>	}});
575	>	await(threadStarted);
576	>	assertFalse(p.isTerminating());
577	>	done.countDown();
578	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
579	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
580	>	assertTrue(p.isTerminated());
581	>	assertFalse(p.isTerminating());
582	>	}
583		}
584
585		/**
586	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
587	<	*  This occurs on an attempt to schedule a task on a shutdown executor
588	<	*/
589	<	public void testSchedule3_RejectedExecutionException(){
590	<	try{
591	<	ScheduledExecutor se = new ScheduledExecutor(1);
592	<	se.shutdown();
593	<	se.schedule(new Callable(){
594	<	public Object call(){
595	<	return Boolean.TRUE;
586	>	* getQueue returns the work queue, which contains queued tasks
587	>	*/
588	>	public void testGetQueue() throws InterruptedException {
589	>	final CountDownLatch done = new CountDownLatch(1);
590	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
591	>	try (PoolCleaner cleaner = cleaner(p, done)) {
592	>	final CountDownLatch threadStarted = new CountDownLatch(1);
593	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
594	>	for (int i = 0; i < tasks.length; i++) {
595	>	Runnable r = new CheckedRunnable() {
596	>	public void realRun() throws InterruptedException {
597	>	threadStarted.countDown();
598	>	await(done);
599	>	}};
600	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
601	>	}
602	>	await(threadStarted);
603	>	BlockingQueue<Runnable> q = p.getQueue();
604	>	assertTrue(q.contains(tasks[tasks.length - 1]));
605	>	assertFalse(q.contains(tasks[0]));
606	>	}
607	>	}
608	>
609	>	/**
610	>	* remove(task) removes queued task, and fails to remove active task
611	>	*/
612	>	public void testRemove() throws InterruptedException {
613	>	final CountDownLatch done = new CountDownLatch(1);
614	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
615	>	try (PoolCleaner cleaner = cleaner(p, done)) {
616	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
617	>	final CountDownLatch threadStarted = new CountDownLatch(1);
618	>	for (int i = 0; i < tasks.length; i++) {
619	>	Runnable r = new CheckedRunnable() {
620	>	public void realRun() throws InterruptedException {
621	>	threadStarted.countDown();
622	>	await(done);
623	>	}};
624	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
625	>	}
626	>	await(threadStarted);
627	>	BlockingQueue<Runnable> q = p.getQueue();
628	>	assertFalse(p.remove((Runnable)tasks[0]));
629	>	assertTrue(q.contains((Runnable)tasks[4]));
630	>	assertTrue(q.contains((Runnable)tasks[3]));
631	>	assertTrue(p.remove((Runnable)tasks[4]));
632	>	assertFalse(p.remove((Runnable)tasks[4]));
633	>	assertFalse(q.contains((Runnable)tasks[4]));
634	>	assertTrue(q.contains((Runnable)tasks[3]));
635	>	assertTrue(p.remove((Runnable)tasks[3]));
636	>	assertFalse(q.contains((Runnable)tasks[3]));
637	>	}
638	>	}
639	>
640	>	/**
641	>	* purge eventually removes cancelled tasks from the queue
642	>	*/
643	>	public void testPurge() throws InterruptedException {
644	>	final ScheduledFuture[] tasks = new ScheduledFuture[5];
645	>	final Runnable releaser = new Runnable() { public void run() {
646	>	for (ScheduledFuture task : tasks)
647	>	if (task != null) task.cancel(true); }};
648	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
649	>	try (PoolCleaner cleaner = cleaner(p, releaser)) {
650	>	for (int i = 0; i < tasks.length; i++)
651	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
652	>	LONG_DELAY_MS, MILLISECONDS);
653	>	int max = tasks.length;
654	>	if (tasks[4].cancel(true)) --max;
655	>	if (tasks[3].cancel(true)) --max;
656	>	// There must eventually be an interference-free point at
657	>	// which purge will not fail. (At worst, when queue is empty.)
658	>	long startTime = System.nanoTime();
659	>	do {
660	>	p.purge();
661	>	long count = p.getTaskCount();
662	>	if (count == max)
663	>	return;
664	>	} while (millisElapsedSince(startTime) < LONG_DELAY_MS);
665	>	fail("Purge failed to remove cancelled tasks");
666	>	}
667	>	}
668	>
669	>	/**
670	>	* shutdownNow returns a list containing tasks that were not run,
671	>	* and those tasks are drained from the queue
672	>	*/
673	>	public void testShutdownNow() throws InterruptedException {
674	>	final int poolSize = 2;
675	>	final int count = 5;
676	>	final AtomicInteger ran = new AtomicInteger(0);
677	>	final ScheduledThreadPoolExecutor p =
678	>	new ScheduledThreadPoolExecutor(poolSize);
679	>	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
680	>	Runnable waiter = new CheckedRunnable() { public void realRun() {
681	>	threadsStarted.countDown();
682	>	try {
683	>	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
684	>	} catch (InterruptedException success) {}
685	>	ran.getAndIncrement();
686	>	}};
687	>	for (int i = 0; i < count; i++)
688	>	p.execute(waiter);
689	>	await(threadsStarted);
690	>	assertEquals(poolSize, p.getActiveCount());
691	>	assertEquals(0, p.getCompletedTaskCount());
692	>	final List<Runnable> queuedTasks;
693	>	try {
694	>	queuedTasks = p.shutdownNow();
695	>	} catch (SecurityException ok) {
696	>	return; // Allowed in case test doesn't have privs
697	>	}
698	>	assertTrue(p.isShutdown());
699	>	assertTrue(p.getQueue().isEmpty());
700	>	assertEquals(count - poolSize, queuedTasks.size());
701	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
702	>	assertTrue(p.isTerminated());
703	>	assertEquals(poolSize, ran.get());
704	>	assertEquals(poolSize, p.getCompletedTaskCount());
705	>	}
706	>
707	>	/**
708	>	* shutdownNow returns a list containing tasks that were not run,
709	>	* and those tasks are drained from the queue
710	>	*/
711	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
712	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
713	>	List<ScheduledFuture> tasks = new ArrayList<>();
714	>	for (int i = 0; i < 3; i++) {
715	>	Runnable r = new NoOpRunnable();
716	>	tasks.add(p.schedule(r, 9, SECONDS));
717	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
718	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
719	>	}
720	>	if (testImplementationDetails)
721	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
722	>	final List<Runnable> queuedTasks;
723	>	try {
724	>	queuedTasks = p.shutdownNow();
725	>	} catch (SecurityException ok) {
726	>	return; // Allowed in case test doesn't have privs
727	>	}
728	>	assertTrue(p.isShutdown());
729	>	assertTrue(p.getQueue().isEmpty());
730	>	if (testImplementationDetails)
731	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
732	>	assertEquals(tasks.size(), queuedTasks.size());
733	>	for (ScheduledFuture task : tasks) {
734	>	assertFalse(task.isDone());
735	>	assertFalse(task.isCancelled());
736	>	}
737	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
738	>	assertTrue(p.isTerminated());
739	>	}
740	>
741	>	/**
742	>	* By default, periodic tasks are cancelled at shutdown.
743	>	* By default, delayed tasks keep running after shutdown.
744	>	* Check that changing the default values work:
745	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
746	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
747	>	*/
748	>	public void testShutdown_cancellation() throws Exception {
749	>	final int poolSize = 6;
750	>	final ScheduledThreadPoolExecutor p
751	>	= new ScheduledThreadPoolExecutor(poolSize);
752	>	final BlockingQueue<Runnable> q = p.getQueue();
753	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
754	>	final boolean effectiveDelayedPolicy;
755	>	final boolean effectivePeriodicPolicy;
756	>	final boolean effectiveRemovePolicy;
757	>
758	>	if (rnd.nextBoolean())
759	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(
760	>	effectiveDelayedPolicy = rnd.nextBoolean());
761	>	else
762	>	effectiveDelayedPolicy = true;
763	>	assertEquals(effectiveDelayedPolicy,
764	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
765	>
766	>	if (rnd.nextBoolean())
767	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(
768	>	effectivePeriodicPolicy = rnd.nextBoolean());
769	>	else
770	>	effectivePeriodicPolicy = false;
771	>	assertEquals(effectivePeriodicPolicy,
772	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
773	>
774	>	if (rnd.nextBoolean())
775	>	p.setRemoveOnCancelPolicy(
776	>	effectiveRemovePolicy = rnd.nextBoolean());
777	>	else
778	>	effectiveRemovePolicy = false;
779	>	assertEquals(effectiveRemovePolicy,
780	>	p.getRemoveOnCancelPolicy());
781	>
782	>	final boolean periodicTasksContinue = effectivePeriodicPolicy && rnd.nextBoolean();
783	>
784	>	// Strategy: Wedge the pool with one wave of "blocker" tasks,
785	>	// then add a second wave that waits in the queue until unblocked.
786	>	final AtomicInteger ran = new AtomicInteger(0);
787	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
788	>	final CountDownLatch unblock = new CountDownLatch(1);
789	>	final RuntimeException exception = new RuntimeException();
790	>
791	>	class Task implements Runnable {
792	>	public void run() {
793	>	try {
794	>	ran.getAndIncrement();
795	>	poolBlocked.countDown();
796	>	await(unblock);
797	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
798	>	}
799	>	}
800	>
801	>	class PeriodicTask extends Task {
802	>	PeriodicTask(int rounds) { this.rounds = rounds; }
803	>	int rounds;
804	>	public void run() {
805	>	if (--rounds == 0) super.run();
806	>	// throw exception to surely terminate this periodic task,
807	>	// but in a separate execution and in a detectable way.
808	>	if (rounds == -1) throw exception;
809	>	}
810	>	}
811	>
812	>	Runnable task = new Task();
813	>
814	>	List<Future<?>> immediates = new ArrayList<>();
815	>	List<Future<?>> delayeds   = new ArrayList<>();
816	>	List<Future<?>> periodics  = new ArrayList<>();
817	>
818	>	immediates.add(p.submit(task));
819	>	delayeds.add(p.schedule(task, 1, MILLISECONDS));
820	>	for (int rounds : new int[] { 1, 2 }) {
821	>	periodics.add(p.scheduleAtFixedRate(
822	>	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
823	>	periodics.add(p.scheduleWithFixedDelay(
824	>	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
825	>	}
826	>
827	>	await(poolBlocked);
828	>
829	>	assertEquals(poolSize, ran.get());
830	>	assertTrue(q.isEmpty());
831	>
832	>	// Add second wave of tasks.
833	>	immediates.add(p.submit(task));
834	>	long delay_ms = effectiveDelayedPolicy ? 1 : LONG_DELAY_MS;
835	>	delayeds.add(p.schedule(task, delay_ms, MILLISECONDS));
836	>	for (int rounds : new int[] { 1, 2 }) {
837	>	periodics.add(p.scheduleAtFixedRate(
838	>	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
839	>	periodics.add(p.scheduleWithFixedDelay(
840	>	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
841	>	}
842	>
843	>	assertEquals(poolSize, q.size());
844	>	assertEquals(poolSize, ran.get());
845	>
846	>	immediates.forEach(
847	>	f -> assertTrue(((ScheduledFuture)f).getDelay(NANOSECONDS) <= 0L));
848	>
849	>	Stream.of(immediates, delayeds, periodics).flatMap(c -> c.stream())
850	>	.forEach(f -> assertFalse(f.isDone()));
851	>
852	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
853	>	assertTrue(p.isShutdown());
854	>	assertTrue(p.isTerminating());
855	>	assertFalse(p.isTerminated());
856	>
857	>	if (rnd.nextBoolean())
858	>	assertThrows(
859	>	RejectedExecutionException.class,
860	>	() -> p.submit(task),
861	>	() -> p.schedule(task, 1, SECONDS),
862	>	() -> p.scheduleAtFixedRate(
863	>	new PeriodicTask(1), 1, 1, SECONDS),
864	>	() -> p.scheduleWithFixedDelay(
865	>	new PeriodicTask(2), 1, 1, SECONDS));
866	>
867	>	assertTrue(q.contains(immediates.get(1)));
868	>	assertTrue(!effectiveDelayedPolicy
869	>	^ q.contains(delayeds.get(1)));
870	>	assertTrue(!effectivePeriodicPolicy
871	>	^ q.containsAll(periodics.subList(4, 8)));
872	>
873	>	immediates.forEach(f -> assertFalse(f.isDone()));
874	>
875	>	assertFalse(delayeds.get(0).isDone());
876	>	if (effectiveDelayedPolicy)
877	>	assertFalse(delayeds.get(1).isDone());
878	>	else
879	>	assertTrue(delayeds.get(1).isCancelled());
880	>
881	>	if (testImplementationDetails) {
882	>	if (effectivePeriodicPolicy)
883	>	periodics.forEach(
884	>	f -> {
885	>	assertFalse(f.isDone());
886	>	if (!periodicTasksContinue)
887	>	assertTrue(f.cancel(false));
888	>	});
889	>	else {
890	>	periodics.subList(0, 4).forEach(f -> assertFalse(f.isDone()));
891	>	periodics.subList(4, 8).forEach(f -> assertTrue(f.isCancelled()));
892	>	}
893	>	}
894	>
895	>	unblock.countDown();    // Release all pool threads
896	>
897	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
898	>	assertFalse(p.isTerminating());
899	>	assertTrue(p.isTerminated());
900	>
901	>	assertTrue(q.isEmpty());
902	>
903	>	Stream.of(immediates, delayeds, periodics).flatMap(c -> c.stream())
904	>	.forEach(f -> assertTrue(f.isDone()));
905	>
906	>	for (Future<?> f : immediates) assertNull(f.get());
907	>
908	>	assertNull(delayeds.get(0).get());
909	>	if (effectiveDelayedPolicy)
910	>	assertNull(delayeds.get(1).get());
911	>	else
912	>	assertTrue(delayeds.get(1).isCancelled());
913	>
914	>	if (periodicTasksContinue)
915	>	periodics.forEach(
916	>	f -> {
917	>	try { f.get(); }
918	>	catch (ExecutionException success) {
919	>	assertSame(exception, success.getCause());
920		}
921	<	},  10000, TimeUnit.MILLISECONDS);
202	<	fail("should throw");
203	<	}catch(RejectedExecutionException e){}
204	<	}
205	<
206	<	/**
207	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
208	<	*  RejectedExecutionException.
209	<	*  This occurs on an attempt to schedule a task on a shutdown executor
210	<	*/
211	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
212	<	try{
213	<	ScheduledExecutor se = new ScheduledExecutor(1);
214	<	se.shutdown();
215	<	se.scheduleAtFixedRate(new Runnable(){
216	<	public void run(){}
217	<	}, 100, 100, TimeUnit.SECONDS);
218	<	fail("should throw");
219	<	}catch(RejectedExecutionException e){}
220	<	}
221	<
222	<	/**
223	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
224	<	*  RejectedExecutionException.
225	<	*  This occurs on an attempt to schedule a task on a shutdown executor
226	<	*/
227	<	public void testScheduleAtFixedRate2_RejectedExecutionException(){
228	<	try{
229	<	ScheduledExecutor se = new ScheduledExecutor(1);
230	<	se.shutdown();
231	<	se.scheduleAtFixedRate(new Runnable(){
232	<	public void run(){}
233	<	},  1, 100, TimeUnit.SECONDS);
234	<	fail("should throw");
235	<	}catch(RejectedExecutionException e){}
236	<	}
237	<
238	<	/**
239	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
240	<	*  RejectedExecutionException.
241	<	*  This occurs on an attempt to schedule a task on a shutdown executor
242	<	*/
243	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
244	<	try{
245	<	ScheduledExecutor se = new ScheduledExecutor(1);
246	<	se.shutdown();
247	<	se.scheduleWithFixedDelay(new Runnable(){
248	<	public void run(){}
249	<	}, 100, 100, TimeUnit.SECONDS);
250	<	fail("should throw");
251	<	}catch(RejectedExecutionException e){}
252	<	}
253	<
254	<	/**
255	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
256	<	*  RejectedExecutionException.
257	<	*  This occurs on an attempt to schedule a task on a shutdown executor
258	<	*/
259	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
260	<	try{
261	<	ScheduledExecutor se = new ScheduledExecutor(1);
262	<	se.shutdown();
263	<	se.scheduleWithFixedDelay(new Runnable(){
264	<	public void run(){}
265	<	},  1, 100, TimeUnit.SECONDS);
266	<	fail("should throw");
267	<	}catch(RejectedExecutionException e){}
268	<	}
269	<
270	<	/**
271	<	*  Test to verify execute throws RejectedExecutionException
272	<	*  This occurs on an attempt to schedule a task on a shutdown executor
273	<	*/
274	<	public void testExecute_RejectedExecutionException(){
275	<	try{
276	<	ScheduledExecutor se = new ScheduledExecutor(1);
277	<	se.shutdown();
278	<	se.execute(new Runnable(){
279	<	public void run(){}
921	>	catch (Throwable fail) { threadUnexpectedException(fail); }
922		});
923	<	fail("should throw");
924	<	}catch(RejectedExecutionException e){}
923	>	else
924	>	periodics.forEach(f -> assertTrue(f.isCancelled()));
925	>
926	>	assertEquals(poolSize + 1
927	>	+ (effectiveDelayedPolicy ? 1 : 0)
928	>	+ (periodicTasksContinue ? 4 : 0),
929	>	ran.get());
930		}
931
932	+	/**
933	+	* completed submit of callable returns result
934	+	*/
935	+	public void testSubmitCallable() throws Exception {
936	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
937	+	try (PoolCleaner cleaner = cleaner(e)) {
938	+	Future<String> future = e.submit(new StringTask());
939	+	String result = future.get();
940	+	assertSame(TEST_STRING, result);
941	+	}
942	+	}
943
944	+	/**
945	+	* completed submit of runnable returns successfully
946	+	*/
947	+	public void testSubmitRunnable() throws Exception {
948	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
949	+	try (PoolCleaner cleaner = cleaner(e)) {
950	+	Future<?> future = e.submit(new NoOpRunnable());
951	+	future.get();
952	+	assertTrue(future.isDone());
953	+	}
954	+	}
955
956		/**
957	<	*  Test to verify getActiveCount gives correct values
957	>	* completed submit of (runnable, result) returns result
958		*/
959	<	public void testGetActiveCount(){
960	<	ScheduledExecutor two = new ScheduledExecutor(2);
961	<	try {
962	<	assertEquals(0, two.getActiveCount());
963	<	two.execute(newRunnable());
964	<	try{
296	<	Thread.sleep(SHORT_DELAY_MS/2);
297	<	} catch(Exception e){
298	<	fail("unexpected exception");
299	<	}
300	<	assertEquals(1, two.getActiveCount());
301	<	} finally {
302	<	two.shutdown();
959	>	public void testSubmitRunnable2() throws Exception {
960	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
961	>	try (PoolCleaner cleaner = cleaner(e)) {
962	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
963	>	String result = future.get();
964	>	assertSame(TEST_STRING, result);
965		}
966		}
967	<
967	>
968		/**
969	<	*  Test to verify getCompleteTaskCount gives correct values
969	>	* invokeAny(null) throws NPE
970		*/
971	<	public void testGetCompletedTaskCount(){
972	<	ScheduledExecutor two = new ScheduledExecutor(2);
973	<	try {
974	<	assertEquals(0, two.getCompletedTaskCount());
975	<	two.execute(newRunnable());
976	<	try{
977	<	Thread.sleep(MEDIUM_DELAY_MS);
316	<	} catch(Exception e){
317	<	fail("unexpected exception");
318	<	}
319	<	assertEquals(1, two.getCompletedTaskCount());
320	<	} finally {
321	<	two.shutdown();
971	>	public void testInvokeAny1() throws Exception {
972	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
973	>	try (PoolCleaner cleaner = cleaner(e)) {
974	>	try {
975	>	e.invokeAny(null);
976	>	shouldThrow();
977	>	} catch (NullPointerException success) {}
978		}
979		}
980	<
980	>
981		/**
982	<	*  Test to verify getCorePoolSize gives correct values
982	>	* invokeAny(empty collection) throws IAE
983		*/
984	<	public void testGetCorePoolSize(){
985	<	ScheduledExecutor one = new ScheduledExecutor(1);
986	<	try {
987	<	assertEquals(1, one.getCorePoolSize());
988	<	} finally {
989	<	one.shutdown();
984	>	public void testInvokeAny2() throws Exception {
985	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
986	>	try (PoolCleaner cleaner = cleaner(e)) {
987	>	try {
988	>	e.invokeAny(new ArrayList<Callable<String>>());
989	>	shouldThrow();
990	>	} catch (IllegalArgumentException success) {}
991		}
992		}
993	<
993	>
994		/**
995	<	*  Test to verify getLargestPoolSize gives correct values
995	>	* invokeAny(c) throws NPE if c has null elements
996		*/
997	<	public void testGetLargestPoolSize(){
998	<	ScheduledExecutor two = new ScheduledExecutor(2);
999	<	try {
1000	<	assertEquals(0, two.getLargestPoolSize());
1001	<	two.execute(newRunnable());
1002	<	two.execute(newRunnable());
1003	<	try{
1004	<	Thread.sleep(SHORT_DELAY_MS);
1005	<	} catch(Exception e){
1006	<	fail("unexpected exception");
997	>	public void testInvokeAny3() throws Exception {
998	>	CountDownLatch latch = new CountDownLatch(1);
999	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1000	>	try (PoolCleaner cleaner = cleaner(e)) {
1001	>	List<Callable<String>> l = new ArrayList<>();
1002	>	l.add(latchAwaitingStringTask(latch));
1003	>	l.add(null);
1004	>	try {
1005	>	e.invokeAny(l);
1006	>	shouldThrow();
1007	>	} catch (NullPointerException success) {}
1008	>	latch.countDown();
1009	>	}
1010	>	}
1011	>
1012	>	/**
1013	>	* invokeAny(c) throws ExecutionException if no task completes
1014	>	*/
1015	>	public void testInvokeAny4() throws Exception {
1016	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1017	>	try (PoolCleaner cleaner = cleaner(e)) {
1018	>	List<Callable<String>> l = new ArrayList<>();
1019	>	l.add(new NPETask());
1020	>	try {
1021	>	e.invokeAny(l);
1022	>	shouldThrow();
1023	>	} catch (ExecutionException success) {
1024	>	assertTrue(success.getCause() instanceof NullPointerException);
1025		}
351	–	assertEquals(2, two.getLargestPoolSize());
352	–	} finally {
353	–	two.shutdown();
1026		}
1027		}
1028	<
1028	>
1029		/**
1030	<	*  Test to verify getPoolSize gives correct values
1030	>	* invokeAny(c) returns result of some task
1031		*/
1032	<	public void testGetPoolSize(){
1033	<	ScheduledExecutor one = new ScheduledExecutor(1);
1034	<	try {
1035	<	assertEquals(0, one.getPoolSize());
1036	<	one.execute(newRunnable());
1037	<	assertEquals(1, one.getPoolSize());
1038	<	} finally {
1039	<	one.shutdown();
1032	>	public void testInvokeAny5() throws Exception {
1033	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1034	>	try (PoolCleaner cleaner = cleaner(e)) {
1035	>	List<Callable<String>> l = new ArrayList<>();
1036	>	l.add(new StringTask());
1037	>	l.add(new StringTask());
1038	>	String result = e.invokeAny(l);
1039	>	assertSame(TEST_STRING, result);
1040		}
1041		}
1042	<
1042	>
1043		/**
1044	<	*  Test to verify getTaskCount gives correct values
1044	>	* invokeAll(null) throws NPE
1045		*/
1046	<	public void testGetTaskCount(){
1047	<	ScheduledExecutor one = new ScheduledExecutor(1);
1048	<	try {
1049	<	assertEquals(0, one.getTaskCount());
1050	<	for(int i = 0; i < 5; i++)
1051	<	one.execute(newRunnable());
1052	<	try{
381	<	Thread.sleep(SHORT_DELAY_MS);
382	<	} catch(Exception e){
383	<	fail("unexpected exception");
384	<	}
385	<	assertEquals(5, one.getTaskCount());
386	<	} finally {
387	<	one.shutdown();
388	<	}
389	<	}
390	<
391	<	/**
392	<	*  Test to verify isShutDown gives correct values
393	<	*/
394	<	public void testIsShutdown(){
395	<
396	<	ScheduledExecutor one = new ScheduledExecutor(1);
397	<	try {
398	<	assertFalse(one.isShutdown());
1046	>	public void testInvokeAll1() throws Exception {
1047	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1048	>	try (PoolCleaner cleaner = cleaner(e)) {
1049	>	try {
1050	>	e.invokeAll(null);
1051	>	shouldThrow();
1052	>	} catch (NullPointerException success) {}
1053		}
1054	<	finally {
1055	<	one.shutdown();
1054	>	}
1055	>
1056	>	/**
1057	>	* invokeAll(empty collection) returns empty collection
1058	>	*/
1059	>	public void testInvokeAll2() throws Exception {
1060	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1061	>	try (PoolCleaner cleaner = cleaner(e)) {
1062	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
1063	>	assertTrue(r.isEmpty());
1064		}
403	–	assertTrue(one.isShutdown());
1065		}
1066
406	–
1067		/**
1068	<	*  Test to verify isTerminated gives correct values
409	<	*  Makes sure termination does not take an innapropriate
410	<	*  amount of time
1068	>	* invokeAll(c) throws NPE if c has null elements
1069		*/
1070	<	public void testIsTerminated(){
1071	<	ScheduledExecutor one = new ScheduledExecutor(1);
1072	<	try {
1073	<	one.execute(newRunnable());
1074	<	} finally {
1075	<	one.shutdown();
1076	<	}
1077	<	boolean flag = false;
1078	<	try{
1079	<	flag = one.awaitTermination(10, TimeUnit.SECONDS);
1080	<	} catch(Exception e){
423	<	fail("unexpected exception");
424	<	}
425	<	assertTrue(one.isTerminated());
426	<	if(!flag)
427	<	fail("ThreadPoolExecutor - thread pool did not terminate within suitable timeframe");
1070	>	public void testInvokeAll3() throws Exception {
1071	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1072	>	try (PoolCleaner cleaner = cleaner(e)) {
1073	>	List<Callable<String>> l = new ArrayList<>();
1074	>	l.add(new StringTask());
1075	>	l.add(null);
1076	>	try {
1077	>	e.invokeAll(l);
1078	>	shouldThrow();
1079	>	} catch (NullPointerException success) {}
1080	>	}
1081		}
1082
1083		/**
1084	<	*  Test to verify that purge correctly removes cancelled tasks
432	<	*  from the queue
1084	>	* get of invokeAll(c) throws exception on failed task
1085		*/
1086	<	public void testPurge(){
1087	<	ScheduledExecutor one = new ScheduledExecutor(1);
1088	<	try {
1089	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1090	<	for(int i = 0; i < 5; i++){
1091	<	tasks[i] = one.schedule(newRunnable(), 1, TimeUnit.MILLISECONDS);
1086	>	public void testInvokeAll4() throws Exception {
1087	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1088	>	try (PoolCleaner cleaner = cleaner(e)) {
1089	>	List<Callable<String>> l = new ArrayList<>();
1090	>	l.add(new NPETask());
1091	>	List<Future<String>> futures = e.invokeAll(l);
1092	>	assertEquals(1, futures.size());
1093	>	try {
1094	>	futures.get(0).get();
1095	>	shouldThrow();
1096	>	} catch (ExecutionException success) {
1097	>	assertTrue(success.getCause() instanceof NullPointerException);
1098		}
441	–	int max = 5;
442	–	if (tasks[4].cancel(true)) --max;
443	–	if (tasks[3].cancel(true)) --max;
444	–	one.purge();
445	–	long count = one.getTaskCount();
446	–	assertTrue(count > 0 && count <= max);
447	–	} finally {
448	–	one.shutdown();
1099		}
1100		}
1101
1102		/**
1103	<	*  Test to verify shutDownNow returns a list
454	<	*  containing the correct number of elements
1103	>	* invokeAll(c) returns results of all completed tasks
1104		*/
1105	<	public void testShutDownNow(){
1106	<	ScheduledExecutor one = new ScheduledExecutor(1);
1107	<	for(int i = 0; i < 5; i++)
1108	<	one.schedule(newRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
1109	<	List l = one.shutdownNow();
1110	<	assertTrue(one.isShutdown());
1111	<	assertTrue(l.size() > 0 && l.size() <= 5);
1105	>	public void testInvokeAll5() throws Exception {
1106	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1107	>	try (PoolCleaner cleaner = cleaner(e)) {
1108	>	List<Callable<String>> l = new ArrayList<>();
1109	>	l.add(new StringTask());
1110	>	l.add(new StringTask());
1111	>	List<Future<String>> futures = e.invokeAll(l);
1112	>	assertEquals(2, futures.size());
1113	>	for (Future<String> future : futures)
1114	>	assertSame(TEST_STRING, future.get());
1115	>	}
1116		}
1117
1118	<	public void testShutDown1(){
1119	<	try {
1120	<	ScheduledExecutor one = new ScheduledExecutor(1);
1121	<	assertTrue(one.getExecuteExistingDelayedTasksAfterShutdownPolicy());
1122	<	assertFalse(one.getContinueExistingPeriodicTasksAfterShutdownPolicy());
1118	>	/**
1119	>	* timed invokeAny(null) throws NPE
1120	>	*/
1121	>	public void testTimedInvokeAny1() throws Exception {
1122	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1123	>	try (PoolCleaner cleaner = cleaner(e)) {
1124	>	try {
1125	>	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
1126	>	shouldThrow();
1127	>	} catch (NullPointerException success) {}
1128	>	}
1129	>	}
1130
1131	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1132	<	for(int i = 0; i < 5; i++)
1133	<	tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
1134	<	one.shutdown();
1135	<	BlockingQueue q = one.getQueue();
1136	<	for (Iterator it = q.iterator(); it.hasNext();) {
1137	<	ScheduledCancellable t = (ScheduledCancellable)it.next();
1138	<	assertFalse(t.isCancelled());
1139	<	}
1140	<	assertTrue(one.isShutdown());
1141	<	Thread.sleep(SHORT_DELAY_MS);
1142	<	for (int i = 0; i < 5; ++i) {
1143	<	assertTrue(tasks[i].isDone());
1144	<	assertFalse(tasks[i].isCancelled());
1145	<	}
1146	<
1131	>	/**
1132	>	* timed invokeAny(,,null) throws NPE
1133	>	*/
1134	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1135	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1136	>	try (PoolCleaner cleaner = cleaner(e)) {
1137	>	List<Callable<String>> l = new ArrayList<>();
1138	>	l.add(new StringTask());
1139	>	try {
1140	>	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1141	>	shouldThrow();
1142	>	} catch (NullPointerException success) {}
1143	>	}
1144	>	}
1145	>
1146	>	/**
1147	>	* timed invokeAny(empty collection) throws IAE
1148	>	*/
1149	>	public void testTimedInvokeAny2() throws Exception {
1150	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1151	>	try (PoolCleaner cleaner = cleaner(e)) {
1152	>	try {
1153	>	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1154	>	shouldThrow();
1155	>	} catch (IllegalArgumentException success) {}
1156		}
1157	<	catch(Exception ex) {
1158	<	fail("unexpected exception");
1157	>	}
1158	>
1159	>	/**
1160	>	* timed invokeAny(c) throws NPE if c has null elements
1161	>	*/
1162	>	public void testTimedInvokeAny3() throws Exception {
1163	>	CountDownLatch latch = new CountDownLatch(1);
1164	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1165	>	try (PoolCleaner cleaner = cleaner(e)) {
1166	>	List<Callable<String>> l = new ArrayList<>();
1167	>	l.add(latchAwaitingStringTask(latch));
1168	>	l.add(null);
1169	>	try {
1170	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1171	>	shouldThrow();
1172	>	} catch (NullPointerException success) {}
1173	>	latch.countDown();
1174		}
1175		}
1176
1177	+	/**
1178	+	* timed invokeAny(c) throws ExecutionException if no task completes
1179	+	*/
1180	+	public void testTimedInvokeAny4() throws Exception {
1181	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1182	+	try (PoolCleaner cleaner = cleaner(e)) {
1183	+	long startTime = System.nanoTime();
1184	+	List<Callable<String>> l = new ArrayList<>();
1185	+	l.add(new NPETask());
1186	+	try {
1187	+	e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1188	+	shouldThrow();
1189	+	} catch (ExecutionException success) {
1190	+	assertTrue(success.getCause() instanceof NullPointerException);
1191	+	}
1192	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1193	+	}
1194	+	}
1195
1196	<	public void testShutDown2(){
1197	<	try {
1198	<	ScheduledExecutor one = new ScheduledExecutor(1);
1199	<	one.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
1200	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1201	<	for(int i = 0; i < 5; i++)
1202	<	tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
1203	<	one.shutdown();
1204	<	assertTrue(one.isShutdown());
1205	<	BlockingQueue q = one.getQueue();
1206	<	assertTrue(q.isEmpty());
1207	<	Thread.sleep(SHORT_DELAY_MS);
1208	<	assertTrue(one.isTerminated());
1196	>	/**
1197	>	* timed invokeAny(c) returns result of some task
1198	>	*/
1199	>	public void testTimedInvokeAny5() throws Exception {
1200	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1201	>	try (PoolCleaner cleaner = cleaner(e)) {
1202	>	long startTime = System.nanoTime();
1203	>	List<Callable<String>> l = new ArrayList<>();
1204	>	l.add(new StringTask());
1205	>	l.add(new StringTask());
1206	>	String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1207	>	assertSame(TEST_STRING, result);
1208	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1209		}
1210	<	catch(Exception ex) {
1211	<	fail("unexpected exception");
1210	>	}
1211	>
1212	>	/**
1213	>	* timed invokeAll(null) throws NPE
1214	>	*/
1215	>	public void testTimedInvokeAll1() throws Exception {
1216	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1217	>	try (PoolCleaner cleaner = cleaner(e)) {
1218	>	try {
1219	>	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1220	>	shouldThrow();
1221	>	} catch (NullPointerException success) {}
1222		}
1223		}
1224
1225	+	/**
1226	+	* timed invokeAll(,,null) throws NPE
1227	+	*/
1228	+	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1229	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1230	+	try (PoolCleaner cleaner = cleaner(e)) {
1231	+	List<Callable<String>> l = new ArrayList<>();
1232	+	l.add(new StringTask());
1233	+	try {
1234	+	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1235	+	shouldThrow();
1236	+	} catch (NullPointerException success) {}
1237	+	}
1238	+	}
1239
1240	<	public void testShutDown3(){
1241	<	try {
1242	<	ScheduledExecutor one = new ScheduledExecutor(1);
1243	<	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
1244	<	ScheduledCancellable task =
1245	<	one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1246	<	one.shutdown();
1247	<	assertTrue(one.isShutdown());
1248	<	BlockingQueue q = one.getQueue();
523	<	assertTrue(q.isEmpty());
524	<	Thread.sleep(SHORT_DELAY_MS);
525	<	assertTrue(one.isTerminated());
1240	>	/**
1241	>	* timed invokeAll(empty collection) returns empty collection
1242	>	*/
1243	>	public void testTimedInvokeAll2() throws Exception {
1244	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1245	>	try (PoolCleaner cleaner = cleaner(e)) {
1246	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(),
1247	>	MEDIUM_DELAY_MS, MILLISECONDS);
1248	>	assertTrue(r.isEmpty());
1249		}
1250	<	catch(Exception ex) {
1251	<	fail("unexpected exception");
1250	>	}
1251	>
1252	>	/**
1253	>	* timed invokeAll(c) throws NPE if c has null elements
1254	>	*/
1255	>	public void testTimedInvokeAll3() throws Exception {
1256	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1257	>	try (PoolCleaner cleaner = cleaner(e)) {
1258	>	List<Callable<String>> l = new ArrayList<>();
1259	>	l.add(new StringTask());
1260	>	l.add(null);
1261	>	try {
1262	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1263	>	shouldThrow();
1264	>	} catch (NullPointerException success) {}
1265		}
1266		}
1267
1268	<	public void testShutDown4(){
1269	<	ScheduledExecutor one = new ScheduledExecutor(1);
1270	<	try {
1271	<	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
1272	<	ScheduledCancellable task =
1273	<	one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1274	<	assertFalse(task.isCancelled());
1275	<	one.shutdown();
1276	<	assertFalse(task.isCancelled());
1277	<	assertFalse(one.isTerminated());
1278	<	assertTrue(one.isShutdown());
1279	<	Thread.sleep(SHORT_DELAY_MS);
1280	<	assertFalse(task.isCancelled());
1281	<	task.cancel(true);
1282	<	assertTrue(task.isCancelled());
1283	<	Thread.sleep(SHORT_DELAY_MS);
1284	<	assertTrue(one.isTerminated());
1268	>	/**
1269	>	* get of element of invokeAll(c) throws exception on failed task
1270	>	*/
1271	>	public void testTimedInvokeAll4() throws Exception {
1272	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1273	>	try (PoolCleaner cleaner = cleaner(e)) {
1274	>	List<Callable<String>> l = new ArrayList<>();
1275	>	l.add(new NPETask());
1276	>	List<Future<String>> futures =
1277	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1278	>	assertEquals(1, futures.size());
1279	>	try {
1280	>	futures.get(0).get();
1281	>	shouldThrow();
1282	>	} catch (ExecutionException success) {
1283	>	assertTrue(success.getCause() instanceof NullPointerException);
1284	>	}
1285		}
1286	<	catch(Exception ex) {
1287	<	fail("unexpected exception");
1286	>	}
1287	>
1288	>	/**
1289	>	* timed invokeAll(c) returns results of all completed tasks
1290	>	*/
1291	>	public void testTimedInvokeAll5() throws Exception {
1292	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1293	>	try (PoolCleaner cleaner = cleaner(e)) {
1294	>	List<Callable<String>> l = new ArrayList<>();
1295	>	l.add(new StringTask());
1296	>	l.add(new StringTask());
1297	>	List<Future<String>> futures =
1298	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1299	>	assertEquals(2, futures.size());
1300	>	for (Future<String> future : futures)
1301	>	assertSame(TEST_STRING, future.get());
1302	>	}
1303	>	}
1304	>
1305	>	/**
1306	>	* timed invokeAll(c) cancels tasks not completed by timeout
1307	>	*/
1308	>	public void testTimedInvokeAll6() throws Exception {
1309	>	for (long timeout = timeoutMillis();;) {
1310	>	final CountDownLatch done = new CountDownLatch(1);
1311	>	final Callable<String> waiter = new CheckedCallable<String>() {
1312	>	public String realCall() {
1313	>	try { done.await(LONG_DELAY_MS, MILLISECONDS); }
1314	>	catch (InterruptedException ok) {}
1315	>	return "1"; }};
1316	>	final ExecutorService p = new ScheduledThreadPoolExecutor(2);
1317	>	try (PoolCleaner cleaner = cleaner(p, done)) {
1318	>	List<Callable<String>> tasks = new ArrayList<>();
1319	>	tasks.add(new StringTask("0"));
1320	>	tasks.add(waiter);
1321	>	tasks.add(new StringTask("2"));
1322	>	long startTime = System.nanoTime();
1323	>	List<Future<String>> futures =
1324	>	p.invokeAll(tasks, timeout, MILLISECONDS);
1325	>	assertEquals(tasks.size(), futures.size());
1326	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1327	>	for (Future future : futures)
1328	>	assertTrue(future.isDone());
1329	>	assertTrue(futures.get(1).isCancelled());
1330	>	try {
1331	>	assertEquals("0", futures.get(0).get());
1332	>	assertEquals("2", futures.get(2).get());
1333	>	break;
1334	>	} catch (CancellationException retryWithLongerTimeout) {
1335	>	timeout *= 2;
1336	>	if (timeout >= LONG_DELAY_MS / 2)
1337	>	fail("expected exactly one task to be cancelled");
1338	>	}
1339	>	}
1340		}
1341	<	finally {
1342	<	one.shutdownNow();
1341	>	}
1342	>
1343	>	/**
1344	>	* A fixed delay task with overflowing period should not prevent a
1345	>	* one-shot task from executing.
1346	>	* https://bugs.openjdk.java.net/browse/JDK-8051859
1347	>	*/
1348	>	public void testScheduleWithFixedDelay_overflow() throws Exception {
1349	>	final CountDownLatch delayedDone = new CountDownLatch(1);
1350	>	final CountDownLatch immediateDone = new CountDownLatch(1);
1351	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
1352	>	try (PoolCleaner cleaner = cleaner(p)) {
1353	>	final Runnable immediate = new Runnable() { public void run() {
1354	>	immediateDone.countDown();
1355	>	}};
1356	>	final Runnable delayed = new Runnable() { public void run() {
1357	>	delayedDone.countDown();
1358	>	p.submit(immediate);
1359	>	}};
1360	>	p.scheduleWithFixedDelay(delayed, 0L, Long.MAX_VALUE, SECONDS);
1361	>	await(delayedDone);
1362	>	await(immediateDone);
1363		}
1364		}
1365

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