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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 1.81 by jsr166, Wed Aug 24 22:22:39 2016 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.ThreadPoolExecutor;
28	>	import java.util.concurrent.atomic.AtomicBoolean;
29	>	import java.util.concurrent.atomic.AtomicInteger;
30	>	import java.util.concurrent.atomic.AtomicLong;
31
32	+	import junit.framework.Test;
33	+	import junit.framework.TestSuite;
34	+
35	+	public class ScheduledExecutorTest extends JSR166TestCase {
36		public static void main(String[] args) {
37	<	junit.textui.TestRunner.run (suite());
37	>	main(suite(), args);
38		}
19	–
20	–
39		public static Test suite() {
40	<	return new TestSuite(ScheduledExecutorTest.class);
40	>	return new TestSuite(ScheduledExecutorTest.class);
41		}
42
43	<	private static long SHORT_DELAY_MS = 100;
44	<	private static long MEDIUM_DELAY_MS = 1000;
45	<	private static long LONG_DELAY_MS = 10000;
46	<
47	<	static class MyRunnable implements Runnable {
48	<	volatile boolean waiting = true;
49	<	volatile boolean done = false;
50	<	public void run(){
51	<	try{
52	<	Thread.sleep(SHORT_DELAY_MS);
53	<	waiting = false;
54	<	done = true;
55	<	} catch(Exception e){
43	>	/**
44	>	* execute successfully executes a runnable
45	>	*/
46	>	public void testExecute() throws InterruptedException {
47	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
48	>	try (PoolCleaner cleaner = cleaner(p)) {
49	>	final CountDownLatch done = new CountDownLatch(1);
50	>	final Runnable task = new CheckedRunnable() {
51	>	public void realRun() { done.countDown(); }};
52	>	p.execute(task);
53	>	assertTrue(done.await(LONG_DELAY_MS, MILLISECONDS));
54	>	}
55	>	}
56	>
57	>	/**
58	>	* delayed schedule of callable successfully executes after delay
59	>	*/
60	>	public void testSchedule1() throws Exception {
61	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
62	>	try (PoolCleaner cleaner = cleaner(p)) {
63	>	final long startTime = System.nanoTime();
64	>	final CountDownLatch done = new CountDownLatch(1);
65	>	Callable task = new CheckedCallable<Boolean>() {
66	>	public Boolean realCall() {
67	>	done.countDown();
68	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
69	>	return Boolean.TRUE;
70	>	}};
71	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
72	>	assertSame(Boolean.TRUE, f.get());
73	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
74	>	assertTrue(done.await(0L, MILLISECONDS));
75	>	}
76	>	}
77	>
78	>	/**
79	>	* delayed schedule of runnable successfully executes after delay
80	>	*/
81	>	public void testSchedule3() throws Exception {
82	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
83	>	try (PoolCleaner cleaner = cleaner(p)) {
84	>	final long startTime = System.nanoTime();
85	>	final CountDownLatch done = new CountDownLatch(1);
86	>	Runnable task = new CheckedRunnable() {
87	>	public void realRun() {
88	>	done.countDown();
89	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
90	>	}};
91	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
92	>	await(done);
93	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
94	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
95	>	}
96	>	}
97	>
98	>	/**
99	>	* scheduleAtFixedRate executes runnable after given initial delay
100	>	*/
101	>	public void testSchedule4() throws Exception {
102	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
103	>	try (PoolCleaner cleaner = cleaner(p)) {
104	>	final long startTime = System.nanoTime();
105	>	final CountDownLatch done = new CountDownLatch(1);
106	>	Runnable task = new CheckedRunnable() {
107	>	public void realRun() {
108	>	done.countDown();
109	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
110	>	}};
111	>	ScheduledFuture f =
112	>	p.scheduleAtFixedRate(task, timeoutMillis(),
113	>	LONG_DELAY_MS, MILLISECONDS);
114	>	await(done);
115	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
116	>	f.cancel(true);
117	>	}
118	>	}
119	>
120	>	/**
121	>	* scheduleWithFixedDelay executes runnable after given initial delay
122	>	*/
123	>	public void testSchedule5() throws Exception {
124	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
125	>	try (PoolCleaner cleaner = cleaner(p)) {
126	>	final long startTime = System.nanoTime();
127	>	final CountDownLatch done = new CountDownLatch(1);
128	>	Runnable task = new CheckedRunnable() {
129	>	public void realRun() {
130	>	done.countDown();
131	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
132	>	}};
133	>	ScheduledFuture f =
134	>	p.scheduleWithFixedDelay(task, timeoutMillis(),
135	>	LONG_DELAY_MS, MILLISECONDS);
136	>	await(done);
137	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
138	>	f.cancel(true);
139	>	}
140	>	}
141	>
142	>	static class RunnableCounter implements Runnable {
143	>	AtomicInteger count = new AtomicInteger(0);
144	>	public void run() { count.getAndIncrement(); }
145	>	}
146	>
147	>	/**
148	>	* scheduleAtFixedRate executes series of tasks at given rate.
149	>	* Eventually, it must hold that:
150	>	*   cycles - 1 <= elapsedMillis/delay < cycles
151	>	*/
152	>	public void testFixedRateSequence() throws InterruptedException {
153	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
154	>	try (PoolCleaner cleaner = cleaner(p)) {
155	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
156	>	final long startTime = System.nanoTime();
157	>	final int cycles = 8;
158	>	final CountDownLatch done = new CountDownLatch(cycles);
159	>	final Runnable task = new CheckedRunnable() {
160	>	public void realRun() { done.countDown(); }};
161	>	final ScheduledFuture periodicTask =
162	>	p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
163	>	final int totalDelayMillis = (cycles - 1) * delay;
164	>	await(done, totalDelayMillis + LONG_DELAY_MS);
165	>	periodicTask.cancel(true);
166	>	final long elapsedMillis = millisElapsedSince(startTime);
167	>	assertTrue(elapsedMillis >= totalDelayMillis);
168	>	if (elapsedMillis <= cycles * delay)
169	>	return;
170	>	// else retry with longer delay
171		}
172	+	fail("unexpected execution rate");
173		}
174		}
175
176	<	static class MyCallable implements Callable {
177	<	volatile boolean waiting = true;
178	<	volatile boolean done = false;
179	<	public Object call(){
180	<	try{
181	<	Thread.sleep(SHORT_DELAY_MS);
182	<	waiting = false;
183	<	done = true;
184	<	}catch(Exception e){}
185	<	return Boolean.TRUE;
176	>	/**
177	>	* scheduleWithFixedDelay executes series of tasks with given period.
178	>	* Eventually, it must hold that each task starts at least delay and at
179	>	* most 2 * delay after the termination of the previous task.
180	>	*/
181	>	public void testFixedDelaySequence() throws InterruptedException {
182	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
183	>	try (PoolCleaner cleaner = cleaner(p)) {
184	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
185	>	final long startTime = System.nanoTime();
186	>	final AtomicLong previous = new AtomicLong(startTime);
187	>	final AtomicBoolean tryLongerDelay = new AtomicBoolean(false);
188	>	final int cycles = 8;
189	>	final CountDownLatch done = new CountDownLatch(cycles);
190	>	final int d = delay;
191	>	final Runnable task = new CheckedRunnable() {
192	>	public void realRun() {
193	>	long now = System.nanoTime();
194	>	long elapsedMillis
195	>	= NANOSECONDS.toMillis(now - previous.get());
196	>	if (done.getCount() == cycles) { // first execution
197	>	if (elapsedMillis >= d)
198	>	tryLongerDelay.set(true);
199	>	} else {
200	>	assertTrue(elapsedMillis >= d);
201	>	if (elapsedMillis >= 2 * d)
202	>	tryLongerDelay.set(true);
203	>	}
204	>	previous.set(now);
205	>	done.countDown();
206	>	}};
207	>	final ScheduledFuture periodicTask =
208	>	p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
209	>	final int totalDelayMillis = (cycles - 1) * delay;
210	>	await(done, totalDelayMillis + cycles * LONG_DELAY_MS);
211	>	periodicTask.cancel(true);
212	>	final long elapsedMillis = millisElapsedSince(startTime);
213	>	assertTrue(elapsedMillis >= totalDelayMillis);
214	>	if (!tryLongerDelay.get())
215	>	return;
216	>	// else retry with longer delay
217	>	}
218	>	fail("unexpected execution rate");
219		}
220		}
221
222	<	public Runnable newRunnable(){
223	<	return new Runnable(){
224	<	public void run(){
225	<	try{Thread.sleep(SHORT_DELAY_MS);
226	<	} catch(Exception e){
227	<	}
228	<	}
229	<	};
222	>	/**
223	>	* execute(null) throws NPE
224	>	*/
225	>	public void testExecuteNull() throws InterruptedException {
226	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
227	>	try (PoolCleaner cleaner = cleaner(p)) {
228	>	try {
229	>	p.execute(null);
230	>	shouldThrow();
231	>	} catch (NullPointerException success) {}
232	>	}
233		}
234
235	<	public Runnable newNoopRunnable() {
236	<	return new Runnable(){
237	<	public void run(){
238	<	}
239	<	};
235	>	/**
236	>	* schedule(null) throws NPE
237	>	*/
238	>	public void testScheduleNull() throws InterruptedException {
239	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
240	>	try (PoolCleaner cleaner = cleaner(p)) {
241	>	try {
242	>	TrackedCallable callable = null;
243	>	Future f = p.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
244	>	shouldThrow();
245	>	} catch (NullPointerException success) {}
246	>	}
247		}
248
249		/**
250	<	*  Test to verify execute successfully runs the given Runnable
250	>	* execute throws RejectedExecutionException if shutdown
251		*/
252	<	public void testExecute(){
253	<	try{
254	<	MyRunnable runnable =new MyRunnable();
255	<	ScheduledExecutor one = new ScheduledExecutor(1);
256	<	one.execute(runnable);
257	<	Thread.sleep(SHORT_DELAY_MS/2);
258	<	assertTrue(runnable.waiting);
259	<	one.shutdown();
260	<	try{
261	<	Thread.sleep(MEDIUM_DELAY_MS);
85	<	} catch(InterruptedException e){
86	<	fail("unexpected exception");
87	<	}
88	<	assertFalse(runnable.waiting);
89	<	assertTrue(runnable.done);
90	<	one.shutdown();
252	>	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
253	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
254	>	try (PoolCleaner cleaner = cleaner(p)) {
255	>	try {
256	>	p.shutdown();
257	>	p.schedule(new NoOpRunnable(),
258	>	MEDIUM_DELAY_MS, MILLISECONDS);
259	>	shouldThrow();
260	>	} catch (RejectedExecutionException success) {
261	>	} catch (SecurityException ok) {}
262		}
263	<	catch(Exception e){
264	<	fail("unexpected exception");
263	>	}
264	>
265	>	/**
266	>	* schedule throws RejectedExecutionException if shutdown
267	>	*/
268	>	public void testSchedule2_RejectedExecutionException() throws InterruptedException {
269	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
270	>	try (PoolCleaner cleaner = cleaner(p)) {
271	>	try {
272	>	p.shutdown();
273	>	p.schedule(new NoOpCallable(),
274	>	MEDIUM_DELAY_MS, MILLISECONDS);
275	>	shouldThrow();
276	>	} catch (RejectedExecutionException success) {
277	>	} catch (SecurityException ok) {}
278		}
279		}
280
281		/**
282	<	*  Test to verify schedule successfully runs the given Callable.
99	<	*  The waiting flag shows that the Callable is not started until
100	<	*  immediately.
282	>	* schedule callable throws RejectedExecutionException if shutdown
283		*/
284	<	public void testSchedule1(){
285	<	try{
286	<	MyCallable callable = new MyCallable();
287	<	ScheduledExecutor one = new ScheduledExecutor(1);
288	<	Future f = one.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
289	<	assertTrue(callable.waiting);
290	<	Thread.sleep(MEDIUM_DELAY_MS);
291	<	assertTrue(callable.done);
292	<	assertEquals(Boolean.TRUE, f.get());
293	<	one.shutdown();
112	<	}catch(RejectedExecutionException e){}
113	<	catch(Exception e){
114	<	fail("unexpected exception");
284	>	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
285	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
286	>	try (PoolCleaner cleaner = cleaner(p)) {
287	>	try {
288	>	p.shutdown();
289	>	p.schedule(new NoOpCallable(),
290	>	MEDIUM_DELAY_MS, MILLISECONDS);
291	>	shouldThrow();
292	>	} catch (RejectedExecutionException success) {
293	>	} catch (SecurityException ok) {}
294		}
295		}
296
297		/**
298	<	*  Another version of schedule, only using Runnable instead of Callable
298	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
299		*/
300	<	public void testSchedule3(){
301	<	try{
302	<	MyRunnable runnable = new MyRunnable();
303	<	ScheduledExecutor one = new ScheduledExecutor(1);
304	<	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
305	<	Thread.sleep(SHORT_DELAY_MS/2);
306	<	assertTrue(runnable.waiting);
307	<	Thread.sleep(MEDIUM_DELAY_MS);
308	<	assertTrue(runnable.done);
309	<	one.shutdown();
131	<	} catch(Exception e){
132	<	fail("unexpected exception");
300	>	public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
301	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
302	>	try (PoolCleaner cleaner = cleaner(p)) {
303	>	try {
304	>	p.shutdown();
305	>	p.scheduleAtFixedRate(new NoOpRunnable(),
306	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
307	>	shouldThrow();
308	>	} catch (RejectedExecutionException success) {
309	>	} catch (SecurityException ok) {}
310		}
311		}
312	<
312	>
313		/**
314	<	*  The final version of schedule, using both long, TimeUnit and Runnable
314	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
315		*/
316	<	public void testSchedule4(){
317	<	try{
318	<	MyRunnable runnable = new MyRunnable();
319	<	ScheduledExecutor one = new ScheduledExecutor(1);
320	<	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
321	<	//      Thread.sleep(505);
322	<	assertTrue(runnable.waiting);
323	<	Thread.sleep(MEDIUM_DELAY_MS);
324	<	assertTrue(runnable.done);
325	<	one.shutdown();
149	<	} catch(Exception e){
150	<	fail("unexpected exception");
316	>	public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
317	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
318	>	try (PoolCleaner cleaner = cleaner(p)) {
319	>	try {
320	>	p.shutdown();
321	>	p.scheduleWithFixedDelay(new NoOpRunnable(),
322	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
323	>	shouldThrow();
324	>	} catch (RejectedExecutionException success) {
325	>	} catch (SecurityException ok) {}
326		}
327		}
153	–
154	–
155	–	// exception tests
328
329		/**
330	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
331	<	*  This occurs on an attempt to schedule a task on a shutdown executor
330	>	* getActiveCount increases but doesn't overestimate, when a
331	>	* thread becomes active
332		*/
333	<	public void testSchedule1_RejectedExecutionException(){
334	<	try{
335	<	ScheduledExecutor se = new ScheduledExecutor(1);
336	<	se.shutdown();
337	<	se.schedule(new Runnable(){
338	<	public void run(){}
339	<	}, 10000, TimeUnit.MILLISECONDS);
340	<	fail("shoud throw");
341	<	}catch(RejectedExecutionException e){}
333	>	public void testGetActiveCount() throws InterruptedException {
334	>	final CountDownLatch done = new CountDownLatch(1);
335	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
336	>	try (PoolCleaner cleaner = cleaner(p, done)) {
337	>	final CountDownLatch threadStarted = new CountDownLatch(1);
338	>	assertEquals(0, p.getActiveCount());
339	>	p.execute(new CheckedRunnable() {
340	>	public void realRun() throws InterruptedException {
341	>	threadStarted.countDown();
342	>	assertEquals(1, p.getActiveCount());
343	>	await(done);
344	>	}});
345	>	await(threadStarted);
346	>	assertEquals(1, p.getActiveCount());
347	>	}
348		}
349
350		/**
351	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
352	<	*  This occurs on an attempt to schedule a task on a shutdown executor
351	>	* getCompletedTaskCount increases, but doesn't overestimate,
352	>	* when tasks complete
353		*/
354	<	public void testSchedule2_RejectedExecutionException(){
355	<	try{
356	<	ScheduledExecutor se = new ScheduledExecutor(1);
357	<	se.shutdown();
358	<	se.schedule(new Callable(){
359	<	public Object call(){
360	<	return Boolean.TRUE;
361	<	}
362	<	}, (long)100, TimeUnit.SECONDS);
363	<	fail("should throw");
364	<	}catch(RejectedExecutionException e){}
354	>	public void testGetCompletedTaskCount() throws InterruptedException {
355	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
356	>	try (PoolCleaner cleaner = cleaner(p)) {
357	>	final CountDownLatch threadStarted = new CountDownLatch(1);
358	>	final CountDownLatch threadProceed = new CountDownLatch(1);
359	>	final CountDownLatch threadDone = new CountDownLatch(1);
360	>	assertEquals(0, p.getCompletedTaskCount());
361	>	p.execute(new CheckedRunnable() {
362	>	public void realRun() throws InterruptedException {
363	>	threadStarted.countDown();
364	>	assertEquals(0, p.getCompletedTaskCount());
365	>	threadProceed.await();
366	>	threadDone.countDown();
367	>	}});
368	>	await(threadStarted);
369	>	assertEquals(0, p.getCompletedTaskCount());
370	>	threadProceed.countDown();
371	>	threadDone.await();
372	>	long startTime = System.nanoTime();
373	>	while (p.getCompletedTaskCount() != 1) {
374	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
375	>	fail("timed out");
376	>	Thread.yield();
377	>	}
378	>	}
379		}
380
381		/**
382	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
191	<	*  This occurs on an attempt to schedule a task on a shutdown executor
382	>	* getCorePoolSize returns size given in constructor if not otherwise set
383		*/
384	<	public void testSchedule3_RejectedExecutionException(){
385	<	try{
386	<	ScheduledExecutor se = new ScheduledExecutor(1);
387	<	se.shutdown();
388	<	se.schedule(new Callable(){
389	<	public Object call(){
390	<	return Boolean.TRUE;
391	<	}
392	<	},  10000, TimeUnit.MILLISECONDS);
393	<	fail("should throw");
394	<	}catch(RejectedExecutionException e){}
384	>	public void testGetCorePoolSize() throws InterruptedException {
385	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
386	>	try (PoolCleaner cleaner = cleaner(p)) {
387	>	assertEquals(1, p.getCorePoolSize());
388	>	}
389	>	}
390	>
391	>	/**
392	>	* getLargestPoolSize increases, but doesn't overestimate, when
393	>	* multiple threads active
394	>	*/
395	>	public void testGetLargestPoolSize() throws InterruptedException {
396	>	final int THREADS = 3;
397	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
398	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
399	>	final CountDownLatch done = new CountDownLatch(1);
400	>	try (PoolCleaner cleaner = cleaner(p, done)) {
401	>	assertEquals(0, p.getLargestPoolSize());
402	>	for (int i = 0; i < THREADS; i++)
403	>	p.execute(new CheckedRunnable() {
404	>	public void realRun() throws InterruptedException {
405	>	threadsStarted.countDown();
406	>	await(done);
407	>	assertEquals(THREADS, p.getLargestPoolSize());
408	>	}});
409	>	await(threadsStarted);
410	>	assertEquals(THREADS, p.getLargestPoolSize());
411	>	}
412	>	assertEquals(THREADS, p.getLargestPoolSize());
413	>	}
414	>
415	>	/**
416	>	* getPoolSize increases, but doesn't overestimate, when threads
417	>	* become active
418	>	*/
419	>	public void testGetPoolSize() throws InterruptedException {
420	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
421	>	final CountDownLatch threadStarted = new CountDownLatch(1);
422	>	final CountDownLatch done = new CountDownLatch(1);
423	>	try (PoolCleaner cleaner = cleaner(p, done)) {
424	>	assertEquals(0, p.getPoolSize());
425	>	p.execute(new CheckedRunnable() {
426	>	public void realRun() throws InterruptedException {
427	>	threadStarted.countDown();
428	>	assertEquals(1, p.getPoolSize());
429	>	await(done);
430	>	}});
431	>	await(threadStarted);
432	>	assertEquals(1, p.getPoolSize());
433	>	}
434	>	}
435	>
436	>	/**
437	>	* getTaskCount increases, but doesn't overestimate, when tasks
438	>	* submitted
439	>	*/
440	>	public void testGetTaskCount() throws InterruptedException {
441	>	final int TASKS = 3;
442	>	final CountDownLatch done = new CountDownLatch(1);
443	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
444	>	try (PoolCleaner cleaner = cleaner(p, done)) {
445	>	final CountDownLatch threadStarted = new CountDownLatch(1);
446	>	assertEquals(0, p.getTaskCount());
447	>	assertEquals(0, p.getCompletedTaskCount());
448	>	p.execute(new CheckedRunnable() {
449	>	public void realRun() throws InterruptedException {
450	>	threadStarted.countDown();
451	>	await(done);
452	>	}});
453	>	await(threadStarted);
454	>	assertEquals(1, p.getTaskCount());
455	>	assertEquals(0, p.getCompletedTaskCount());
456	>	for (int i = 0; i < TASKS; i++) {
457	>	assertEquals(1 + i, p.getTaskCount());
458	>	p.execute(new CheckedRunnable() {
459	>	public void realRun() throws InterruptedException {
460	>	threadStarted.countDown();
461	>	assertEquals(1 + TASKS, p.getTaskCount());
462	>	await(done);
463	>	}});
464	>	}
465	>	assertEquals(1 + TASKS, p.getTaskCount());
466	>	assertEquals(0, p.getCompletedTaskCount());
467	>	}
468	>	assertEquals(1 + TASKS, p.getTaskCount());
469	>	assertEquals(1 + TASKS, p.getCompletedTaskCount());
470		}
471
472		/**
473	<	*  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
473	>	* getThreadFactory returns factory in constructor if not set
474		*/
475	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
476	<	try{
477	<	ScheduledExecutor se = new ScheduledExecutor(1);
478	<	se.shutdown();
479	<	se.scheduleAtFixedRate(new Runnable(){
480	<	public void run(){}
481	<	}, 100, 100, TimeUnit.SECONDS);
218	<	fail("should throw");
219	<	}catch(RejectedExecutionException e){}
475	>	public void testGetThreadFactory() throws InterruptedException {
476	>	final ThreadFactory threadFactory = new SimpleThreadFactory();
477	>	final ScheduledThreadPoolExecutor p =
478	>	new ScheduledThreadPoolExecutor(1, threadFactory);
479	>	try (PoolCleaner cleaner = cleaner(p)) {
480	>	assertSame(threadFactory, p.getThreadFactory());
481	>	}
482		}
483	<
483	>
484		/**
485	<	*  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
485	>	* setThreadFactory sets the thread factory returned by getThreadFactory
486		*/
487	<	public void testScheduleAtFixedRate2_RejectedExecutionException(){
488	<	try{
489	<	ScheduledExecutor se = new ScheduledExecutor(1);
490	<	se.shutdown();
491	<	se.scheduleAtFixedRate(new Runnable(){
492	<	public void run(){}
493	<	},  1, 100, TimeUnit.SECONDS);
234	<	fail("should throw");
235	<	}catch(RejectedExecutionException e){}
487	>	public void testSetThreadFactory() throws InterruptedException {
488	>	ThreadFactory threadFactory = new SimpleThreadFactory();
489	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
490	>	try (PoolCleaner cleaner = cleaner(p)) {
491	>	p.setThreadFactory(threadFactory);
492	>	assertSame(threadFactory, p.getThreadFactory());
493	>	}
494		}
495
496		/**
497	<	*  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
497	>	* setThreadFactory(null) throws NPE
498		*/
499	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
500	<	try{
501	<	ScheduledExecutor se = new ScheduledExecutor(1);
502	<	se.shutdown();
503	<	se.scheduleWithFixedDelay(new Runnable(){
504	<	public void run(){}
505	<	}, 100, 100, TimeUnit.SECONDS);
506	<	fail("should throw");
251	<	}catch(RejectedExecutionException e){}
499	>	public void testSetThreadFactoryNull() throws InterruptedException {
500	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
501	>	try (PoolCleaner cleaner = cleaner(p)) {
502	>	try {
503	>	p.setThreadFactory(null);
504	>	shouldThrow();
505	>	} catch (NullPointerException success) {}
506	>	}
507		}
508
509		/**
510	<	*  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
510	>	* isShutdown is false before shutdown, true after
511		*/
512	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
513	<	try{
514	<	ScheduledExecutor se = new ScheduledExecutor(1);
515	<	se.shutdown();
516	<	se.scheduleWithFixedDelay(new Runnable(){
517	<	public void run(){}
518	<	},  1, 100, TimeUnit.SECONDS);
519	<	fail("should throw");
520	<	}catch(RejectedExecutionException e){}
512	>	public void testIsShutdown() {
513	>
514	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
515	>	try {
516	>	assertFalse(p.isShutdown());
517	>	}
518	>	finally {
519	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
520	>	}
521	>	assertTrue(p.isShutdown());
522		}
523
524		/**
525	<	*  Test to verify execute throws RejectedExecutionException
272	<	*  This occurs on an attempt to schedule a task on a shutdown executor
525	>	* isTerminated is false before termination, true after
526		*/
527	<	public void testExecute_RejectedExecutionException(){
528	<	try{
529	<	ScheduledExecutor se = new ScheduledExecutor(1);
530	<	se.shutdown();
531	<	se.execute(new Runnable(){
532	<	public void run(){}
533	<	});
534	<	fail("should throw");
535	<	}catch(RejectedExecutionException e){}
527	>	public void testIsTerminated() throws InterruptedException {
528	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
529	>	try (PoolCleaner cleaner = cleaner(p)) {
530	>	final CountDownLatch threadStarted = new CountDownLatch(1);
531	>	final CountDownLatch done = new CountDownLatch(1);
532	>	assertFalse(p.isTerminated());
533	>	p.execute(new CheckedRunnable() {
534	>	public void realRun() throws InterruptedException {
535	>	assertFalse(p.isTerminated());
536	>	threadStarted.countDown();
537	>	await(done);
538	>	}});
539	>	await(threadStarted);
540	>	assertFalse(p.isTerminating());
541	>	done.countDown();
542	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
543	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
544	>	assertTrue(p.isTerminated());
545	>	}
546	>	}
547	>
548	>	/**
549	>	* isTerminating is not true when running or when terminated
550	>	*/
551	>	public void testIsTerminating() throws InterruptedException {
552	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
553	>	final CountDownLatch threadStarted = new CountDownLatch(1);
554	>	final CountDownLatch done = new CountDownLatch(1);
555	>	try (PoolCleaner cleaner = cleaner(p)) {
556	>	assertFalse(p.isTerminating());
557	>	p.execute(new CheckedRunnable() {
558	>	public void realRun() throws InterruptedException {
559	>	assertFalse(p.isTerminating());
560	>	threadStarted.countDown();
561	>	await(done);
562	>	}});
563	>	await(threadStarted);
564	>	assertFalse(p.isTerminating());
565	>	done.countDown();
566	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
567	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
568	>	assertTrue(p.isTerminated());
569	>	assertFalse(p.isTerminating());
570	>	}
571	>	}
572	>
573	>	/**
574	>	* getQueue returns the work queue, which contains queued tasks
575	>	*/
576	>	public void testGetQueue() throws InterruptedException {
577	>	final CountDownLatch done = new CountDownLatch(1);
578	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
579	>	try (PoolCleaner cleaner = cleaner(p, done)) {
580	>	final CountDownLatch threadStarted = new CountDownLatch(1);
581	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
582	>	for (int i = 0; i < tasks.length; i++) {
583	>	Runnable r = new CheckedRunnable() {
584	>	public void realRun() throws InterruptedException {
585	>	threadStarted.countDown();
586	>	await(done);
587	>	}};
588	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
589	>	}
590	>	await(threadStarted);
591	>	BlockingQueue<Runnable> q = p.getQueue();
592	>	assertTrue(q.contains(tasks[tasks.length - 1]));
593	>	assertFalse(q.contains(tasks[0]));
594	>	}
595		}
596
597	+	/**
598	+	* remove(task) removes queued task, and fails to remove active task
599	+	*/
600	+	public void testRemove() throws InterruptedException {
601	+	final CountDownLatch done = new CountDownLatch(1);
602	+	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
603	+	try (PoolCleaner cleaner = cleaner(p, done)) {
604	+	ScheduledFuture[] tasks = new ScheduledFuture[5];
605	+	final CountDownLatch threadStarted = new CountDownLatch(1);
606	+	for (int i = 0; i < tasks.length; i++) {
607	+	Runnable r = new CheckedRunnable() {
608	+	public void realRun() throws InterruptedException {
609	+	threadStarted.countDown();
610	+	await(done);
611	+	}};
612	+	tasks[i] = p.schedule(r, 1, MILLISECONDS);
613	+	}
614	+	await(threadStarted);
615	+	BlockingQueue<Runnable> q = p.getQueue();
616	+	assertFalse(p.remove((Runnable)tasks[0]));
617	+	assertTrue(q.contains((Runnable)tasks[4]));
618	+	assertTrue(q.contains((Runnable)tasks[3]));
619	+	assertTrue(p.remove((Runnable)tasks[4]));
620	+	assertFalse(p.remove((Runnable)tasks[4]));
621	+	assertFalse(q.contains((Runnable)tasks[4]));
622	+	assertTrue(q.contains((Runnable)tasks[3]));
623	+	assertTrue(p.remove((Runnable)tasks[3]));
624	+	assertFalse(q.contains((Runnable)tasks[3]));
625	+	}
626	+	}
627
628	+	/**
629	+	* purge eventually removes cancelled tasks from the queue
630	+	*/
631	+	public void testPurge() throws InterruptedException {
632	+	final ScheduledFuture[] tasks = new ScheduledFuture[5];
633	+	final Runnable releaser = new Runnable() { public void run() {
634	+	for (ScheduledFuture task : tasks)
635	+	if (task != null) task.cancel(true); }};
636	+	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
637	+	try (PoolCleaner cleaner = cleaner(p, releaser)) {
638	+	for (int i = 0; i < tasks.length; i++)
639	+	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
640	+	LONG_DELAY_MS, MILLISECONDS);
641	+	int max = tasks.length;
642	+	if (tasks[4].cancel(true)) --max;
643	+	if (tasks[3].cancel(true)) --max;
644	+	// There must eventually be an interference-free point at
645	+	// which purge will not fail. (At worst, when queue is empty.)
646	+	long startTime = System.nanoTime();
647	+	do {
648	+	p.purge();
649	+	long count = p.getTaskCount();
650	+	if (count == max)
651	+	return;
652	+	} while (millisElapsedSince(startTime) < LONG_DELAY_MS);
653	+	fail("Purge failed to remove cancelled tasks");
654	+	}
655	+	}
656
657		/**
658	<	*  Test to verify getActiveCount gives correct values
659	<	*/
660	<	public void testGetActiveCount(){
661	<	ScheduledExecutor two = new ScheduledExecutor(2);
658	>	* shutdownNow returns a list containing tasks that were not run,
659	>	* and those tasks are drained from the queue
660	>	*/
661	>	public void testShutdownNow() throws InterruptedException {
662	>	final int poolSize = 2;
663	>	final int count = 5;
664	>	final AtomicInteger ran = new AtomicInteger(0);
665	>	final ScheduledThreadPoolExecutor p =
666	>	new ScheduledThreadPoolExecutor(poolSize);
667	>	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
668	>	Runnable waiter = new CheckedRunnable() { public void realRun() {
669	>	threadsStarted.countDown();
670	>	try {
671	>	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
672	>	} catch (InterruptedException success) {}
673	>	ran.getAndIncrement();
674	>	}};
675	>	for (int i = 0; i < count; i++)
676	>	p.execute(waiter);
677	>	await(threadsStarted);
678	>	assertEquals(poolSize, p.getActiveCount());
679	>	assertEquals(0, p.getCompletedTaskCount());
680	>	final List<Runnable> queuedTasks;
681		try {
682	<	assertEquals(0, two.getActiveCount());
683	<	two.execute(newRunnable());
684	<	try{
685	<	Thread.sleep(SHORT_DELAY_MS/2);
686	<	} catch(Exception e){
687	<	fail("unexpected exception");
682	>	queuedTasks = p.shutdownNow();
683	>	} catch (SecurityException ok) {
684	>	return; // Allowed in case test doesn't have privs
685	>	}
686	>	assertTrue(p.isShutdown());
687	>	assertTrue(p.getQueue().isEmpty());
688	>	assertEquals(count - poolSize, queuedTasks.size());
689	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
690	>	assertTrue(p.isTerminated());
691	>	assertEquals(poolSize, ran.get());
692	>	assertEquals(poolSize, p.getCompletedTaskCount());
693	>	}
694	>
695	>	/**
696	>	* shutdownNow returns a list containing tasks that were not run,
697	>	* and those tasks are drained from the queue
698	>	*/
699	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
700	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
701	>	List<ScheduledFuture> tasks = new ArrayList<>();
702	>	for (int i = 0; i < 3; i++) {
703	>	Runnable r = new NoOpRunnable();
704	>	tasks.add(p.schedule(r, 9, SECONDS));
705	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
706	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
707	>	}
708	>	if (testImplementationDetails)
709	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
710	>	final List<Runnable> queuedTasks;
711	>	try {
712	>	queuedTasks = p.shutdownNow();
713	>	} catch (SecurityException ok) {
714	>	return; // Allowed in case test doesn't have privs
715	>	}
716	>	assertTrue(p.isShutdown());
717	>	assertTrue(p.getQueue().isEmpty());
718	>	if (testImplementationDetails)
719	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
720	>	assertEquals(tasks.size(), queuedTasks.size());
721	>	for (ScheduledFuture task : tasks) {
722	>	assertFalse(task.isDone());
723	>	assertFalse(task.isCancelled());
724	>	}
725	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
726	>	assertTrue(p.isTerminated());
727	>	}
728	>
729	>	/**
730	>	* By default, periodic tasks are cancelled at shutdown.
731	>	* By default, delayed tasks keep running after shutdown.
732	>	* Check that changing the default values work:
733	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
734	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
735	>	*/
736	>	public void testShutdown_cancellation() throws Exception {
737	>	Boolean[] allBooleans = { null, Boolean.FALSE, Boolean.TRUE };
738	>	for (Boolean policy : allBooleans)
739	>	{
740	>	final int poolSize = 2;
741	>	final ScheduledThreadPoolExecutor p
742	>	= new ScheduledThreadPoolExecutor(poolSize);
743	>	final boolean effectiveDelayedPolicy = (policy != Boolean.FALSE);
744	>	final boolean effectivePeriodicPolicy = (policy == Boolean.TRUE);
745	>	final boolean effectiveRemovePolicy = (policy == Boolean.TRUE);
746	>	if (policy != null) {
747	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(policy);
748	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(policy);
749	>	p.setRemoveOnCancelPolicy(policy);
750	>	}
751	>	assertEquals(effectiveDelayedPolicy,
752	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
753	>	assertEquals(effectivePeriodicPolicy,
754	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
755	>	assertEquals(effectiveRemovePolicy,
756	>	p.getRemoveOnCancelPolicy());
757	>	// Strategy: Wedge the pool with poolSize "blocker" threads
758	>	final AtomicInteger ran = new AtomicInteger(0);
759	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
760	>	final CountDownLatch unblock = new CountDownLatch(1);
761	>	final CountDownLatch periodicLatch1 = new CountDownLatch(2);
762	>	final CountDownLatch periodicLatch2 = new CountDownLatch(2);
763	>	Runnable task = new CheckedRunnable() { public void realRun()
764	>	throws InterruptedException {
765	>	poolBlocked.countDown();
766	>	assertTrue(unblock.await(LONG_DELAY_MS, MILLISECONDS));
767	>	ran.getAndIncrement();
768	>	}};
769	>	List<Future<?>> blockers = new ArrayList<>();
770	>	List<Future<?>> periodics = new ArrayList<>();
771	>	List<Future<?>> delayeds = new ArrayList<>();
772	>	for (int i = 0; i < poolSize; i++)
773	>	blockers.add(p.submit(task));
774	>	assertTrue(poolBlocked.await(LONG_DELAY_MS, MILLISECONDS));
775	>
776	>	periodics.add(p.scheduleAtFixedRate(countDowner(periodicLatch1),
777	>	1, 1, MILLISECONDS));
778	>	periodics.add(p.scheduleWithFixedDelay(countDowner(periodicLatch2),
779	>	1, 1, MILLISECONDS));
780	>	delayeds.add(p.schedule(task, 1, MILLISECONDS));
781	>
782	>	assertTrue(p.getQueue().containsAll(periodics));
783	>	assertTrue(p.getQueue().containsAll(delayeds));
784	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
785	>	assertTrue(p.isShutdown());
786	>	assertFalse(p.isTerminated());
787	>	for (Future<?> periodic : periodics) {
788	>	assertTrue(effectivePeriodicPolicy ^ periodic.isCancelled());
789	>	assertTrue(effectivePeriodicPolicy ^ periodic.isDone());
790	>	}
791	>	for (Future<?> delayed : delayeds) {
792	>	assertTrue(effectiveDelayedPolicy ^ delayed.isCancelled());
793	>	assertTrue(effectiveDelayedPolicy ^ delayed.isDone());
794	>	}
795	>	if (testImplementationDetails) {
796	>	assertEquals(effectivePeriodicPolicy,
797	>	p.getQueue().containsAll(periodics));
798	>	assertEquals(effectiveDelayedPolicy,
799	>	p.getQueue().containsAll(delayeds));
800	>	}
801	>	// Release all pool threads
802	>	unblock.countDown();
803	>
804	>	for (Future<?> delayed : delayeds) {
805	>	if (effectiveDelayedPolicy) {
806	>	assertNull(delayed.get());
807	>	}
808	>	}
809	>	if (effectivePeriodicPolicy) {
810	>	assertTrue(periodicLatch1.await(LONG_DELAY_MS, MILLISECONDS));
811	>	assertTrue(periodicLatch2.await(LONG_DELAY_MS, MILLISECONDS));
812	>	for (Future<?> periodic : periodics) {
813	>	assertTrue(periodic.cancel(false));
814	>	assertTrue(periodic.isCancelled());
815	>	assertTrue(periodic.isDone());
816		}
817	<	assertEquals(1, two.getActiveCount());
818	<	} finally {
819	<	two.shutdown();
817	>	}
818	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
819	>	assertTrue(p.isTerminated());
820	>	assertEquals(2 + (effectiveDelayedPolicy ? 1 : 0), ran.get());
821	>	}}
822	>
823	>	/**
824	>	* completed submit of callable returns result
825	>	*/
826	>	public void testSubmitCallable() throws Exception {
827	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
828	>	try (PoolCleaner cleaner = cleaner(e)) {
829	>	Future<String> future = e.submit(new StringTask());
830	>	String result = future.get();
831	>	assertSame(TEST_STRING, result);
832		}
833		}
834	<
834	>
835		/**
836	<	*  Test to verify getCompleteTaskCount gives correct values
836	>	* completed submit of runnable returns successfully
837		*/
838	<	public void testGetCompletedTaskCount(){
839	<	ScheduledExecutor two = new ScheduledExecutor(2);
840	<	try {
841	<	assertEquals(0, two.getCompletedTaskCount());
842	<	two.execute(newRunnable());
843	<	try{
315	<	Thread.sleep(MEDIUM_DELAY_MS);
316	<	} catch(Exception e){
317	<	fail("unexpected exception");
318	<	}
319	<	assertEquals(1, two.getCompletedTaskCount());
320	<	} finally {
321	<	two.shutdown();
838	>	public void testSubmitRunnable() throws Exception {
839	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
840	>	try (PoolCleaner cleaner = cleaner(e)) {
841	>	Future<?> future = e.submit(new NoOpRunnable());
842	>	future.get();
843	>	assertTrue(future.isDone());
844		}
845		}
846	<
846	>
847		/**
848	<	*  Test to verify getCorePoolSize gives correct values
848	>	* completed submit of (runnable, result) returns result
849		*/
850	<	public void testGetCorePoolSize(){
851	<	ScheduledExecutor one = new ScheduledExecutor(1);
852	<	try {
853	<	assertEquals(1, one.getCorePoolSize());
854	<	} finally {
855	<	one.shutdown();
850	>	public void testSubmitRunnable2() throws Exception {
851	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
852	>	try (PoolCleaner cleaner = cleaner(e)) {
853	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
854	>	String result = future.get();
855	>	assertSame(TEST_STRING, result);
856		}
857		}
858	<
858	>
859		/**
860	<	*  Test to verify getLargestPoolSize gives correct values
860	>	* invokeAny(null) throws NPE
861		*/
862	<	public void testGetLargestPoolSize(){
863	<	ScheduledExecutor two = new ScheduledExecutor(2);
864	<	try {
865	<	assertEquals(0, two.getLargestPoolSize());
866	<	two.execute(newRunnable());
867	<	two.execute(newRunnable());
868	<	try{
869	<	Thread.sleep(SHORT_DELAY_MS);
870	<	} catch(Exception e){
871	<	fail("unexpected exception");
862	>	public void testInvokeAny1() throws Exception {
863	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
864	>	try (PoolCleaner cleaner = cleaner(e)) {
865	>	try {
866	>	e.invokeAny(null);
867	>	shouldThrow();
868	>	} catch (NullPointerException success) {}
869	>	}
870	>	}
871	>
872	>	/**
873	>	* invokeAny(empty collection) throws IAE
874	>	*/
875	>	public void testInvokeAny2() throws Exception {
876	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
877	>	try (PoolCleaner cleaner = cleaner(e)) {
878	>	try {
879	>	e.invokeAny(new ArrayList<Callable<String>>());
880	>	shouldThrow();
881	>	} catch (IllegalArgumentException success) {}
882	>	}
883	>	}
884	>
885	>	/**
886	>	* invokeAny(c) throws NPE if c has null elements
887	>	*/
888	>	public void testInvokeAny3() throws Exception {
889	>	CountDownLatch latch = new CountDownLatch(1);
890	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
891	>	try (PoolCleaner cleaner = cleaner(e)) {
892	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
893	>	l.add(latchAwaitingStringTask(latch));
894	>	l.add(null);
895	>	try {
896	>	e.invokeAny(l);
897	>	shouldThrow();
898	>	} catch (NullPointerException success) {}
899	>	latch.countDown();
900	>	}
901	>	}
902	>
903	>	/**
904	>	* invokeAny(c) throws ExecutionException if no task completes
905	>	*/
906	>	public void testInvokeAny4() throws Exception {
907	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
908	>	try (PoolCleaner cleaner = cleaner(e)) {
909	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
910	>	l.add(new NPETask());
911	>	try {
912	>	e.invokeAny(l);
913	>	shouldThrow();
914	>	} catch (ExecutionException success) {
915	>	assertTrue(success.getCause() instanceof NullPointerException);
916		}
351	–	assertEquals(2, two.getLargestPoolSize());
352	–	} finally {
353	–	two.shutdown();
917		}
918		}
919	<
919	>
920		/**
921	<	*  Test to verify getPoolSize gives correct values
921	>	* invokeAny(c) returns result of some task
922		*/
923	<	public void testGetPoolSize(){
924	<	ScheduledExecutor one = new ScheduledExecutor(1);
925	<	try {
926	<	assertEquals(0, one.getPoolSize());
927	<	one.execute(newRunnable());
928	<	assertEquals(1, one.getPoolSize());
929	<	} finally {
930	<	one.shutdown();
923	>	public void testInvokeAny5() throws Exception {
924	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
925	>	try (PoolCleaner cleaner = cleaner(e)) {
926	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
927	>	l.add(new StringTask());
928	>	l.add(new StringTask());
929	>	String result = e.invokeAny(l);
930	>	assertSame(TEST_STRING, result);
931		}
932		}
933	<
933	>
934		/**
935	<	*  Test to verify getTaskCount gives correct values
935	>	* invokeAll(null) throws NPE
936		*/
937	<	public void testGetTaskCount(){
938	<	ScheduledExecutor one = new ScheduledExecutor(1);
939	<	try {
940	<	assertEquals(0, one.getTaskCount());
941	<	for(int i = 0; i < 5; i++)
942	<	one.execute(newRunnable());
943	<	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());
937	>	public void testInvokeAll1() throws Exception {
938	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
939	>	try (PoolCleaner cleaner = cleaner(e)) {
940	>	try {
941	>	e.invokeAll(null);
942	>	shouldThrow();
943	>	} catch (NullPointerException success) {}
944		}
945	<	finally {
946	<	one.shutdown();
945	>	}
946	>
947	>	/**
948	>	* invokeAll(empty collection) returns empty collection
949	>	*/
950	>	public void testInvokeAll2() throws Exception {
951	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
952	>	try (PoolCleaner cleaner = cleaner(e)) {
953	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
954	>	assertTrue(r.isEmpty());
955		}
403	–	assertTrue(one.isShutdown());
956		}
957
406	–
958		/**
959	<	*  Test to verify isTerminated gives correct values
409	<	*  Makes sure termination does not take an innapropriate
410	<	*  amount of time
959	>	* invokeAll(c) throws NPE if c has null elements
960		*/
961	<	public void testIsTerminated(){
962	<	ScheduledExecutor one = new ScheduledExecutor(1);
963	<	try {
964	<	one.execute(newRunnable());
965	<	} finally {
966	<	one.shutdown();
967	<	}
968	<	boolean flag = false;
969	<	try{
970	<	flag = one.awaitTermination(10, TimeUnit.SECONDS);
971	<	} 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");
961	>	public void testInvokeAll3() throws Exception {
962	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
963	>	try (PoolCleaner cleaner = cleaner(e)) {
964	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
965	>	l.add(new StringTask());
966	>	l.add(null);
967	>	try {
968	>	e.invokeAll(l);
969	>	shouldThrow();
970	>	} catch (NullPointerException success) {}
971	>	}
972		}
973
974		/**
975	<	*  Test to verify that purge correctly removes cancelled tasks
432	<	*  from the queue
975	>	* get of invokeAll(c) throws exception on failed task
976		*/
977	<	public void testPurge(){
978	<	ScheduledExecutor one = new ScheduledExecutor(1);
979	<	try {
980	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
981	<	for(int i = 0; i < 5; i++){
982	<	tasks[i] = one.schedule(newRunnable(), 1, TimeUnit.MILLISECONDS);
977	>	public void testInvokeAll4() throws Exception {
978	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
979	>	try (PoolCleaner cleaner = cleaner(e)) {
980	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
981	>	l.add(new NPETask());
982	>	List<Future<String>> futures = e.invokeAll(l);
983	>	assertEquals(1, futures.size());
984	>	try {
985	>	futures.get(0).get();
986	>	shouldThrow();
987	>	} catch (ExecutionException success) {
988	>	assertTrue(success.getCause() instanceof NullPointerException);
989		}
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();
990		}
991		}
992
993		/**
994	<	*  Test to verify shutDownNow returns a list
454	<	*  containing the correct number of elements
994	>	* invokeAll(c) returns results of all completed tasks
995		*/
996	<	public void testShutDownNow(){
997	<	ScheduledExecutor one = new ScheduledExecutor(1);
998	<	for(int i = 0; i < 5; i++)
999	<	one.schedule(newRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
1000	<	List l = one.shutdownNow();
1001	<	assertTrue(one.isShutdown());
1002	<	assertTrue(l.size() > 0 && l.size() <= 5);
996	>	public void testInvokeAll5() throws Exception {
997	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
998	>	try (PoolCleaner cleaner = cleaner(e)) {
999	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1000	>	l.add(new StringTask());
1001	>	l.add(new StringTask());
1002	>	List<Future<String>> futures = e.invokeAll(l);
1003	>	assertEquals(2, futures.size());
1004	>	for (Future<String> future : futures)
1005	>	assertSame(TEST_STRING, future.get());
1006	>	}
1007		}
1008
1009	<	public void testShutDown1(){
1010	<	try {
1011	<	ScheduledExecutor one = new ScheduledExecutor(1);
1012	<	assertTrue(one.getExecuteExistingDelayedTasksAfterShutdownPolicy());
1013	<	assertFalse(one.getContinueExistingPeriodicTasksAfterShutdownPolicy());
1009	>	/**
1010	>	* timed invokeAny(null) throws NPE
1011	>	*/
1012	>	public void testTimedInvokeAny1() throws Exception {
1013	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1014	>	try (PoolCleaner cleaner = cleaner(e)) {
1015	>	try {
1016	>	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
1017	>	shouldThrow();
1018	>	} catch (NullPointerException success) {}
1019	>	}
1020	>	}
1021
1022	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1023	<	for(int i = 0; i < 5; i++)
1024	<	tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
1025	<	one.shutdown();
1026	<	BlockingQueue q = one.getQueue();
1027	<	for (Iterator it = q.iterator(); it.hasNext();) {
1028	<	ScheduledCancellable t = (ScheduledCancellable)it.next();
1029	<	assertFalse(t.isCancelled());
1030	<	}
1031	<	assertTrue(one.isShutdown());
1032	<	Thread.sleep(SHORT_DELAY_MS);
1033	<	for (int i = 0; i < 5; ++i) {
483	<	assertTrue(tasks[i].isDone());
484	<	assertFalse(tasks[i].isCancelled());
485	<	}
486	<
1022	>	/**
1023	>	* timed invokeAny(,,null) throws NPE
1024	>	*/
1025	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1026	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1027	>	try (PoolCleaner cleaner = cleaner(e)) {
1028	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1029	>	l.add(new StringTask());
1030	>	try {
1031	>	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1032	>	shouldThrow();
1033	>	} catch (NullPointerException success) {}
1034		}
1035	<	catch(Exception ex) {
1036	<	fail("unexpected exception");
1035	>	}
1036	>
1037	>	/**
1038	>	* timed invokeAny(empty collection) throws IAE
1039	>	*/
1040	>	public void testTimedInvokeAny2() throws Exception {
1041	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1042	>	try (PoolCleaner cleaner = cleaner(e)) {
1043	>	try {
1044	>	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1045	>	shouldThrow();
1046	>	} catch (IllegalArgumentException success) {}
1047		}
1048		}
1049
1050	+	/**
1051	+	* timed invokeAny(c) throws NPE if c has null elements
1052	+	*/
1053	+	public void testTimedInvokeAny3() throws Exception {
1054	+	CountDownLatch latch = new CountDownLatch(1);
1055	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1056	+	try (PoolCleaner cleaner = cleaner(e)) {
1057	+	List<Callable<String>> l = new ArrayList<Callable<String>>();
1058	+	l.add(latchAwaitingStringTask(latch));
1059	+	l.add(null);
1060	+	try {
1061	+	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1062	+	shouldThrow();
1063	+	} catch (NullPointerException success) {}
1064	+	latch.countDown();
1065	+	}
1066	+	}
1067
1068	<	public void testShutDown2(){
1069	<	try {
1070	<	ScheduledExecutor one = new ScheduledExecutor(1);
1071	<	one.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
1072	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1073	<	for(int i = 0; i < 5; i++)
1074	<	tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
1075	<	one.shutdown();
1076	<	assertTrue(one.isShutdown());
1077	<	BlockingQueue q = one.getQueue();
1078	<	assertTrue(q.isEmpty());
1079	<	Thread.sleep(SHORT_DELAY_MS);
1080	<	assertTrue(one.isTerminated());
1068	>	/**
1069	>	* timed invokeAny(c) throws ExecutionException if no task completes
1070	>	*/
1071	>	public void testTimedInvokeAny4() throws Exception {
1072	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1073	>	try (PoolCleaner cleaner = cleaner(e)) {
1074	>	long startTime = System.nanoTime();
1075	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1076	>	l.add(new NPETask());
1077	>	try {
1078	>	e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1079	>	shouldThrow();
1080	>	} catch (ExecutionException success) {
1081	>	assertTrue(success.getCause() instanceof NullPointerException);
1082	>	}
1083	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1084		}
1085	<	catch(Exception ex) {
1086	<	fail("unexpected exception");
1085	>	}
1086	>
1087	>	/**
1088	>	* timed invokeAny(c) returns result of some task
1089	>	*/
1090	>	public void testTimedInvokeAny5() throws Exception {
1091	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1092	>	try (PoolCleaner cleaner = cleaner(e)) {
1093	>	long startTime = System.nanoTime();
1094	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1095	>	l.add(new StringTask());
1096	>	l.add(new StringTask());
1097	>	String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1098	>	assertSame(TEST_STRING, result);
1099	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1100		}
1101		}
1102
1103	+	/**
1104	+	* timed invokeAll(null) throws NPE
1105	+	*/
1106	+	public void testTimedInvokeAll1() throws Exception {
1107	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1108	+	try (PoolCleaner cleaner = cleaner(e)) {
1109	+	try {
1110	+	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1111	+	shouldThrow();
1112	+	} catch (NullPointerException success) {}
1113	+	}
1114	+	}
1115
1116	<	public void testShutDown3(){
1117	<	try {
1118	<	ScheduledExecutor one = new ScheduledExecutor(1);
1119	<	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
1120	<	ScheduledCancellable task =
1121	<	one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1122	<	one.shutdown();
1123	<	assertTrue(one.isShutdown());
1124	<	BlockingQueue q = one.getQueue();
1125	<	assertTrue(q.isEmpty());
1126	<	Thread.sleep(SHORT_DELAY_MS);
1127	<	assertTrue(one.isTerminated());
1116	>	/**
1117	>	* timed invokeAll(,,null) throws NPE
1118	>	*/
1119	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1120	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1121	>	try (PoolCleaner cleaner = cleaner(e)) {
1122	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1123	>	l.add(new StringTask());
1124	>	try {
1125	>	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1126	>	shouldThrow();
1127	>	} catch (NullPointerException success) {}
1128		}
1129	<	catch(Exception ex) {
1130	<	fail("unexpected exception");
1129	>	}
1130	>
1131	>	/**
1132	>	* timed invokeAll(empty collection) returns empty collection
1133	>	*/
1134	>	public void testTimedInvokeAll2() throws Exception {
1135	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1136	>	try (PoolCleaner cleaner = cleaner(e)) {
1137	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(),
1138	>	MEDIUM_DELAY_MS, MILLISECONDS);
1139	>	assertTrue(r.isEmpty());
1140		}
1141		}
1142
1143	<	public void testShutDown4(){
1144	<	ScheduledExecutor one = new ScheduledExecutor(1);
1145	<	try {
1146	<	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
1147	<	ScheduledCancellable task =
1148	<	one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1149	<	assertFalse(task.isCancelled());
1150	<	one.shutdown();
1151	<	assertFalse(task.isCancelled());
1152	<	assertFalse(one.isTerminated());
1153	<	assertTrue(one.isShutdown());
1154	<	Thread.sleep(SHORT_DELAY_MS);
1155	<	assertFalse(task.isCancelled());
545	<	task.cancel(true);
546	<	assertTrue(task.isCancelled());
547	<	Thread.sleep(SHORT_DELAY_MS);
548	<	assertTrue(one.isTerminated());
1143	>	/**
1144	>	* timed invokeAll(c) throws NPE if c has null elements
1145	>	*/
1146	>	public void testTimedInvokeAll3() 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(null);
1152	>	try {
1153	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1154	>	shouldThrow();
1155	>	} catch (NullPointerException success) {}
1156		}
1157	<	catch(Exception ex) {
1158	<	fail("unexpected exception");
1157	>	}
1158	>
1159	>	/**
1160	>	* get of element of invokeAll(c) throws exception on failed task
1161	>	*/
1162	>	public void testTimedInvokeAll4() throws Exception {
1163	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1164	>	try (PoolCleaner cleaner = cleaner(e)) {
1165	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1166	>	l.add(new NPETask());
1167	>	List<Future<String>> futures =
1168	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1169	>	assertEquals(1, futures.size());
1170	>	try {
1171	>	futures.get(0).get();
1172	>	shouldThrow();
1173	>	} catch (ExecutionException success) {
1174	>	assertTrue(success.getCause() instanceof NullPointerException);
1175	>	}
1176		}
1177	<	finally {
1178	<	one.shutdownNow();
1177	>	}
1178	>
1179	>	/**
1180	>	* timed invokeAll(c) returns results of all completed tasks
1181	>	*/
1182	>	public void testTimedInvokeAll5() throws Exception {
1183	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1184	>	try (PoolCleaner cleaner = cleaner(e)) {
1185	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1186	>	l.add(new StringTask());
1187	>	l.add(new StringTask());
1188	>	List<Future<String>> futures =
1189	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1190	>	assertEquals(2, futures.size());
1191	>	for (Future<String> future : futures)
1192	>	assertSame(TEST_STRING, future.get());
1193	>	}
1194	>	}
1195	>
1196	>	/**
1197	>	* timed invokeAll(c) cancels tasks not completed by timeout
1198	>	*/
1199	>	public void testTimedInvokeAll6() throws Exception {
1200	>	for (long timeout = timeoutMillis();;) {
1201	>	final CountDownLatch done = new CountDownLatch(1);
1202	>	final Callable<String> waiter = new CheckedCallable<String>() {
1203	>	public String realCall() {
1204	>	try { done.await(LONG_DELAY_MS, MILLISECONDS); }
1205	>	catch (InterruptedException ok) {}
1206	>	return "1"; }};
1207	>	final ExecutorService p = new ScheduledThreadPoolExecutor(2);
1208	>	try (PoolCleaner cleaner = cleaner(p, done)) {
1209	>	List<Callable<String>> tasks = new ArrayList<>();
1210	>	tasks.add(new StringTask("0"));
1211	>	tasks.add(waiter);
1212	>	tasks.add(new StringTask("2"));
1213	>	long startTime = System.nanoTime();
1214	>	List<Future<String>> futures =
1215	>	p.invokeAll(tasks, timeout, MILLISECONDS);
1216	>	assertEquals(tasks.size(), futures.size());
1217	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1218	>	for (Future future : futures)
1219	>	assertTrue(future.isDone());
1220	>	assertTrue(futures.get(1).isCancelled());
1221	>	try {
1222	>	assertEquals("0", futures.get(0).get());
1223	>	assertEquals("2", futures.get(2).get());
1224	>	break;
1225	>	} catch (CancellationException retryWithLongerTimeout) {
1226	>	timeout *= 2;
1227	>	if (timeout >= LONG_DELAY_MS / 2)
1228	>	fail("expected exactly one task to be cancelled");
1229	>	}
1230	>	}
1231	>	}
1232	>	}
1233	>
1234	>	/**
1235	>	* A fixed delay task with overflowing period should not prevent a
1236	>	* one-shot task from executing.
1237	>	* https://bugs.openjdk.java.net/browse/JDK-8051859
1238	>	*/
1239	>	public void testScheduleWithFixedDelay_overflow() throws Exception {
1240	>	final CountDownLatch delayedDone = new CountDownLatch(1);
1241	>	final CountDownLatch immediateDone = new CountDownLatch(1);
1242	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
1243	>	try (PoolCleaner cleaner = cleaner(p)) {
1244	>	final Runnable immediate = new Runnable() { public void run() {
1245	>	immediateDone.countDown();
1246	>	}};
1247	>	final Runnable delayed = new Runnable() { public void run() {
1248	>	delayedDone.countDown();
1249	>	p.submit(immediate);
1250	>	}};
1251	>	p.scheduleWithFixedDelay(delayed, 0L, Long.MAX_VALUE, SECONDS);
1252	>	await(delayedDone);
1253	>	await(immediateDone);
1254		}
1255		}
1256

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