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

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.3 by dl, Mon Sep 8 12:12:42 2003 UTC vs.
Revision 1.94 by jsr166, Mon May 29 22:44:27 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.Collection;
15	>	import java.util.Collections;
16	>	import java.util.HashSet;
17	>	import java.util.List;
18	>	import java.util.concurrent.BlockingQueue;
19	>	import java.util.concurrent.Callable;
20	>	import java.util.concurrent.CancellationException;
21	>	import java.util.concurrent.CountDownLatch;
22	>	import java.util.concurrent.ExecutionException;
23	>	import java.util.concurrent.ExecutorService;
24	>	import java.util.concurrent.Future;
25	>	import java.util.concurrent.RejectedExecutionException;
26	>	import java.util.concurrent.ScheduledFuture;
27	>	import java.util.concurrent.ScheduledThreadPoolExecutor;
28	>	import java.util.concurrent.ThreadFactory;
29	>	import java.util.concurrent.ThreadLocalRandom;
30	>	import java.util.concurrent.ThreadPoolExecutor;
31	>	import java.util.concurrent.atomic.AtomicBoolean;
32	>	import java.util.concurrent.atomic.AtomicInteger;
33	>	import java.util.concurrent.atomic.AtomicLong;
34	>	import java.util.stream.Stream;
35
36	+	import junit.framework.Test;
37	+	import junit.framework.TestSuite;
38	+
39	+	public class ScheduledExecutorTest extends JSR166TestCase {
40		public static void main(String[] args) {
41	<	junit.textui.TestRunner.run (suite());
41	>	main(suite(), args);
42		}
19	–
20	–
43		public static Test suite() {
44	<	return new TestSuite(ScheduledExecutorTest.class);
44	>	return new TestSuite(ScheduledExecutorTest.class);
45		}
46
47	<	private static long SHORT_DELAY_MS = 100;
48	<	private static long MEDIUM_DELAY_MS = 1000;
49	<	private static long LONG_DELAY_MS = 10000;
47	>	/**
48	>	* execute successfully executes a runnable
49	>	*/
50	>	public void testExecute() throws InterruptedException {
51	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
52	>	try (PoolCleaner cleaner = cleaner(p)) {
53	>	final CountDownLatch done = new CountDownLatch(1);
54	>	final Runnable task = new CheckedRunnable() {
55	>	public void realRun() { done.countDown(); }};
56	>	p.execute(task);
57	>	await(done);
58	>	}
59	>	}
60	>
61	>	/**
62	>	* delayed schedule of callable successfully executes after delay
63	>	*/
64	>	public void testSchedule1() throws Exception {
65	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
66	>	try (PoolCleaner cleaner = cleaner(p)) {
67	>	final long startTime = System.nanoTime();
68	>	final CountDownLatch done = new CountDownLatch(1);
69	>	Callable task = new CheckedCallable<Boolean>() {
70	>	public Boolean realCall() {
71	>	done.countDown();
72	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
73	>	return Boolean.TRUE;
74	>	}};
75	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
76	>	assertSame(Boolean.TRUE, f.get());
77	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
78	>	assertEquals(0L, done.getCount());
79	>	}
80	>	}
81	>
82	>	/**
83	>	* delayed schedule of runnable successfully executes after delay
84	>	*/
85	>	public void testSchedule3() throws Exception {
86	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
87	>	try (PoolCleaner cleaner = cleaner(p)) {
88	>	final long startTime = System.nanoTime();
89	>	final CountDownLatch done = new CountDownLatch(1);
90	>	Runnable task = new CheckedRunnable() {
91	>	public void realRun() {
92	>	done.countDown();
93	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
94	>	}};
95	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
96	>	await(done);
97	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
98	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
99	>	}
100	>	}
101	>
102	>	/**
103	>	* scheduleAtFixedRate executes runnable after given initial delay
104	>	*/
105	>	public void testSchedule4() throws Exception {
106	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
107	>	try (PoolCleaner cleaner = cleaner(p)) {
108	>	final long startTime = System.nanoTime();
109	>	final CountDownLatch done = new CountDownLatch(1);
110	>	Runnable task = new CheckedRunnable() {
111	>	public void realRun() {
112	>	done.countDown();
113	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
114	>	}};
115	>	ScheduledFuture f =
116	>	p.scheduleAtFixedRate(task, timeoutMillis(),
117	>	LONG_DELAY_MS, MILLISECONDS);
118	>	await(done);
119	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
120	>	f.cancel(true);
121	>	}
122	>	}
123	>
124	>	/**
125	>	* scheduleWithFixedDelay executes runnable after given initial delay
126	>	*/
127	>	public void testSchedule5() throws Exception {
128	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
129	>	try (PoolCleaner cleaner = cleaner(p)) {
130	>	final long startTime = System.nanoTime();
131	>	final CountDownLatch done = new CountDownLatch(1);
132	>	Runnable task = new CheckedRunnable() {
133	>	public void realRun() {
134	>	done.countDown();
135	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
136	>	}};
137	>	ScheduledFuture f =
138	>	p.scheduleWithFixedDelay(task, timeoutMillis(),
139	>	LONG_DELAY_MS, MILLISECONDS);
140	>	await(done);
141	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
142	>	f.cancel(true);
143	>	}
144	>	}
145	>
146	>	static class RunnableCounter implements Runnable {
147	>	AtomicInteger count = new AtomicInteger(0);
148	>	public void run() { count.getAndIncrement(); }
149	>	}
150	>
151	>	/**
152	>	* scheduleAtFixedRate executes series of tasks at given rate.
153	>	* Eventually, it must hold that:
154	>	*   cycles - 1 <= elapsedMillis/delay < cycles
155	>	*/
156	>	public void testFixedRateSequence() throws InterruptedException {
157	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
158	>	try (PoolCleaner cleaner = cleaner(p)) {
159	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
160	>	final long startTime = System.nanoTime();
161	>	final int cycles = 8;
162	>	final CountDownLatch done = new CountDownLatch(cycles);
163	>	final Runnable task = new CheckedRunnable() {
164	>	public void realRun() { done.countDown(); }};
165	>	final ScheduledFuture periodicTask =
166	>	p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
167	>	final int totalDelayMillis = (cycles - 1) * delay;
168	>	await(done, totalDelayMillis + LONG_DELAY_MS);
169	>	periodicTask.cancel(true);
170	>	final long elapsedMillis = millisElapsedSince(startTime);
171	>	assertTrue(elapsedMillis >= totalDelayMillis);
172	>	if (elapsedMillis <= cycles * delay)
173	>	return;
174	>	// else retry with longer delay
175	>	}
176	>	fail("unexpected execution rate");
177	>	}
178	>	}
179
180	<	static class MyRunnable implements Runnable {
181	<	volatile boolean waiting = true;
182	<	volatile boolean done = false;
183	<	public void run(){
184	<	try{
185	<	Thread.sleep(SHORT_DELAY_MS);
186	<	waiting = false;
187	<	done = true;
188	<	} catch(Exception e){
180	>	/**
181	>	* scheduleWithFixedDelay executes series of tasks with given period.
182	>	* Eventually, it must hold that each task starts at least delay and at
183	>	* most 2 * delay after the termination of the previous task.
184	>	*/
185	>	public void testFixedDelaySequence() throws InterruptedException {
186	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
187	>	try (PoolCleaner cleaner = cleaner(p)) {
188	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
189	>	final long startTime = System.nanoTime();
190	>	final AtomicLong previous = new AtomicLong(startTime);
191	>	final AtomicBoolean tryLongerDelay = new AtomicBoolean(false);
192	>	final int cycles = 8;
193	>	final CountDownLatch done = new CountDownLatch(cycles);
194	>	final int d = delay;
195	>	final Runnable task = new CheckedRunnable() {
196	>	public void realRun() {
197	>	long now = System.nanoTime();
198	>	long elapsedMillis
199	>	= NANOSECONDS.toMillis(now - previous.get());
200	>	if (done.getCount() == cycles) { // first execution
201	>	if (elapsedMillis >= d)
202	>	tryLongerDelay.set(true);
203	>	} else {
204	>	assertTrue(elapsedMillis >= d);
205	>	if (elapsedMillis >= 2 * d)
206	>	tryLongerDelay.set(true);
207	>	}
208	>	previous.set(now);
209	>	done.countDown();
210	>	}};
211	>	final ScheduledFuture periodicTask =
212	>	p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
213	>	final int totalDelayMillis = (cycles - 1) * delay;
214	>	await(done, totalDelayMillis + cycles * LONG_DELAY_MS);
215	>	periodicTask.cancel(true);
216	>	final long elapsedMillis = millisElapsedSince(startTime);
217	>	assertTrue(elapsedMillis >= totalDelayMillis);
218	>	if (!tryLongerDelay.get())
219	>	return;
220	>	// else retry with longer delay
221		}
222	+	fail("unexpected execution rate");
223		}
224		}
225
226	<	static class MyCallable implements Callable {
227	<	volatile boolean waiting = true;
228	<	volatile boolean done = false;
229	<	public Object call(){
230	<	try{
231	<	Thread.sleep(SHORT_DELAY_MS);
232	<	waiting = false;
233	<	done = true;
234	<	}catch(Exception e){}
235	<	return Boolean.TRUE;
226	>	/**
227	>	* execute(null) throws NPE
228	>	*/
229	>	public void testExecuteNull() throws InterruptedException {
230	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
231	>	try (PoolCleaner cleaner = cleaner(p)) {
232	>	try {
233	>	p.execute(null);
234	>	shouldThrow();
235	>	} catch (NullPointerException success) {}
236		}
237		}
238
239	<	public Runnable newRunnable(){
240	<	return new Runnable(){
241	<	public void run(){
242	<	try{Thread.sleep(SHORT_DELAY_MS);
243	<	} catch(Exception e){
244	<	}
245	<	}
246	<	};
239	>	/**
240	>	* schedule(null) throws NPE
241	>	*/
242	>	public void testScheduleNull() throws InterruptedException {
243	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
244	>	try (PoolCleaner cleaner = cleaner(p)) {
245	>	try {
246	>	Future f = p.schedule((Callable)null,
247	>	randomTimeout(), randomTimeUnit());
248	>	shouldThrow();
249	>	} catch (NullPointerException success) {}
250	>	}
251		}
252
253	<	public Runnable newNoopRunnable() {
254	<	return new Runnable(){
255	<	public void run(){
256	<	}
257	<	};
253	>	/**
254	>	* execute throws RejectedExecutionException if shutdown
255	>	*/
256	>	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
257	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
258	>	try (PoolCleaner cleaner = cleaner(p)) {
259	>	try {
260	>	p.shutdown();
261	>	p.schedule(new NoOpRunnable(),
262	>	randomTimeout(), randomTimeUnit());
263	>	shouldThrow();
264	>	} catch (RejectedExecutionException success) {
265	>	} catch (SecurityException ok) {}
266	>	}
267		}
268
269		/**
270	<	*  Test to verify execute successfully runs the given Runnable
270	>	* schedule throws RejectedExecutionException if shutdown
271		*/
272	<	public void testExecute(){
273	<	try{
274	<	MyRunnable runnable =new MyRunnable();
275	<	ScheduledExecutor one = new ScheduledExecutor(1);
276	<	one.execute(runnable);
277	<	Thread.sleep(SHORT_DELAY_MS/2);
278	<	assertTrue(runnable.waiting);
279	<	one.shutdown();
280	<	try{
281	<	Thread.sleep(MEDIUM_DELAY_MS);
282	<	} catch(InterruptedException e){
283	<	fail("unexpected exception");
272	>	public void testSchedule2_RejectedExecutionException() throws InterruptedException {
273	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
274	>	try (PoolCleaner cleaner = cleaner(p)) {
275	>	try {
276	>	p.shutdown();
277	>	p.schedule(new NoOpCallable(),
278	>	randomTimeout(), randomTimeUnit());
279	>	shouldThrow();
280	>	} catch (RejectedExecutionException success) {
281	>	} catch (SecurityException ok) {}
282	>	}
283	>	}
284	>
285	>	/**
286	>	* schedule callable throws RejectedExecutionException if shutdown
287	>	*/
288	>	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
289	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
290	>	try (PoolCleaner cleaner = cleaner(p)) {
291	>	try {
292	>	p.shutdown();
293	>	p.schedule(new NoOpCallable(),
294	>	randomTimeout(), randomTimeUnit());
295	>	shouldThrow();
296	>	} catch (RejectedExecutionException success) {
297	>	} catch (SecurityException ok) {}
298	>	}
299	>	}
300	>
301	>	/**
302	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
303	>	*/
304	>	public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
305	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
306	>	try (PoolCleaner cleaner = cleaner(p)) {
307	>	try {
308	>	p.shutdown();
309	>	p.scheduleAtFixedRate(new NoOpRunnable(),
310	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
311	>	shouldThrow();
312	>	} catch (RejectedExecutionException success) {
313	>	} catch (SecurityException ok) {}
314	>	}
315	>	}
316	>
317	>	/**
318	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
319	>	*/
320	>	public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
321	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
322	>	try (PoolCleaner cleaner = cleaner(p)) {
323	>	try {
324	>	p.shutdown();
325	>	p.scheduleWithFixedDelay(new NoOpRunnable(),
326	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
327	>	shouldThrow();
328	>	} catch (RejectedExecutionException success) {
329	>	} catch (SecurityException ok) {}
330	>	}
331	>	}
332	>
333	>	/**
334	>	* getActiveCount increases but doesn't overestimate, when a
335	>	* thread becomes active
336	>	*/
337	>	public void testGetActiveCount() throws InterruptedException {
338	>	final CountDownLatch done = new CountDownLatch(1);
339	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
340	>	try (PoolCleaner cleaner = cleaner(p, done)) {
341	>	final CountDownLatch threadStarted = new CountDownLatch(1);
342	>	assertEquals(0, p.getActiveCount());
343	>	p.execute(new CheckedRunnable() {
344	>	public void realRun() throws InterruptedException {
345	>	threadStarted.countDown();
346	>	assertEquals(1, p.getActiveCount());
347	>	await(done);
348	>	}});
349	>	await(threadStarted);
350	>	assertEquals(1, p.getActiveCount());
351	>	}
352	>	}
353	>
354	>	/**
355	>	* getCompletedTaskCount increases, but doesn't overestimate,
356	>	* when tasks complete
357	>	*/
358	>	public void testGetCompletedTaskCount() throws InterruptedException {
359	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
360	>	try (PoolCleaner cleaner = cleaner(p)) {
361	>	final CountDownLatch threadStarted = new CountDownLatch(1);
362	>	final CountDownLatch threadProceed = new CountDownLatch(1);
363	>	final CountDownLatch threadDone = new CountDownLatch(1);
364	>	assertEquals(0, p.getCompletedTaskCount());
365	>	p.execute(new CheckedRunnable() {
366	>	public void realRun() throws InterruptedException {
367	>	threadStarted.countDown();
368	>	assertEquals(0, p.getCompletedTaskCount());
369	>	await(threadProceed);
370	>	threadDone.countDown();
371	>	}});
372	>	await(threadStarted);
373	>	assertEquals(0, p.getCompletedTaskCount());
374	>	threadProceed.countDown();
375	>	await(threadDone);
376	>	long startTime = System.nanoTime();
377	>	while (p.getCompletedTaskCount() != 1) {
378	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
379	>	fail("timed out");
380	>	Thread.yield();
381		}
88	–	assertFalse(runnable.waiting);
89	–	assertTrue(runnable.done);
90	–	one.shutdown();
382		}
383	<	catch(Exception e){
384	<	fail("unexpected exception");
383	>	}
384	>
385	>	/**
386	>	* getCorePoolSize returns size given in constructor if not otherwise set
387	>	*/
388	>	public void testGetCorePoolSize() throws InterruptedException {
389	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
390	>	try (PoolCleaner cleaner = cleaner(p)) {
391	>	assertEquals(1, p.getCorePoolSize());
392	>	}
393	>	}
394	>
395	>	/**
396	>	* getLargestPoolSize increases, but doesn't overestimate, when
397	>	* multiple threads active
398	>	*/
399	>	public void testGetLargestPoolSize() throws InterruptedException {
400	>	final int THREADS = 3;
401	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
402	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
403	>	final CountDownLatch done = new CountDownLatch(1);
404	>	try (PoolCleaner cleaner = cleaner(p, done)) {
405	>	assertEquals(0, p.getLargestPoolSize());
406	>	for (int i = 0; i < THREADS; i++)
407	>	p.execute(new CheckedRunnable() {
408	>	public void realRun() throws InterruptedException {
409	>	threadsStarted.countDown();
410	>	await(done);
411	>	assertEquals(THREADS, p.getLargestPoolSize());
412	>	}});
413	>	await(threadsStarted);
414	>	assertEquals(THREADS, p.getLargestPoolSize());
415	>	}
416	>	assertEquals(THREADS, p.getLargestPoolSize());
417	>	}
418	>
419	>	/**
420	>	* getPoolSize increases, but doesn't overestimate, when threads
421	>	* become active
422	>	*/
423	>	public void testGetPoolSize() throws InterruptedException {
424	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
425	>	final CountDownLatch threadStarted = new CountDownLatch(1);
426	>	final CountDownLatch done = new CountDownLatch(1);
427	>	try (PoolCleaner cleaner = cleaner(p, done)) {
428	>	assertEquals(0, p.getPoolSize());
429	>	p.execute(new CheckedRunnable() {
430	>	public void realRun() throws InterruptedException {
431	>	threadStarted.countDown();
432	>	assertEquals(1, p.getPoolSize());
433	>	await(done);
434	>	}});
435	>	await(threadStarted);
436	>	assertEquals(1, p.getPoolSize());
437	>	}
438	>	}
439	>
440	>	/**
441	>	* getTaskCount increases, but doesn't overestimate, when tasks
442	>	* submitted
443	>	*/
444	>	public void testGetTaskCount() throws InterruptedException {
445	>	final int TASKS = 3;
446	>	final CountDownLatch done = new CountDownLatch(1);
447	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
448	>	try (PoolCleaner cleaner = cleaner(p, done)) {
449	>	final CountDownLatch threadStarted = new CountDownLatch(1);
450	>	assertEquals(0, p.getTaskCount());
451	>	assertEquals(0, p.getCompletedTaskCount());
452	>	p.execute(new CheckedRunnable() {
453	>	public void realRun() throws InterruptedException {
454	>	threadStarted.countDown();
455	>	await(done);
456	>	}});
457	>	await(threadStarted);
458	>	assertEquals(1, p.getTaskCount());
459	>	assertEquals(0, p.getCompletedTaskCount());
460	>	for (int i = 0; i < TASKS; i++) {
461	>	assertEquals(1 + i, p.getTaskCount());
462	>	p.execute(new CheckedRunnable() {
463	>	public void realRun() throws InterruptedException {
464	>	threadStarted.countDown();
465	>	assertEquals(1 + TASKS, p.getTaskCount());
466	>	await(done);
467	>	}});
468	>	}
469	>	assertEquals(1 + TASKS, p.getTaskCount());
470	>	assertEquals(0, p.getCompletedTaskCount());
471		}
472	+	assertEquals(1 + TASKS, p.getTaskCount());
473	+	assertEquals(1 + TASKS, p.getCompletedTaskCount());
474		}
475
476		/**
477	<	*  Test to verify schedule successfully runs the given Callable.
99	<	*  The waiting flag shows that the Callable is not started until
100	<	*  immediately.
477	>	* getThreadFactory returns factory in constructor if not set
478		*/
479	<	public void testSchedule1(){
480	<	try{
481	<	MyCallable callable = new MyCallable();
482	<	ScheduledExecutor one = new ScheduledExecutor(1);
483	<	Future f = one.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
484	<	assertTrue(callable.waiting);
108	<	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");
479	>	public void testGetThreadFactory() throws InterruptedException {
480	>	final ThreadFactory threadFactory = new SimpleThreadFactory();
481	>	final ScheduledThreadPoolExecutor p =
482	>	new ScheduledThreadPoolExecutor(1, threadFactory);
483	>	try (PoolCleaner cleaner = cleaner(p)) {
484	>	assertSame(threadFactory, p.getThreadFactory());
485		}
486		}
487
488		/**
489	<	*  Another version of schedule, only using Runnable instead of Callable
489	>	* setThreadFactory sets the thread factory returned by getThreadFactory
490		*/
491	<	public void testSchedule3(){
492	<	try{
493	<	MyRunnable runnable = new MyRunnable();
494	<	ScheduledExecutor one = new ScheduledExecutor(1);
495	<	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
496	<	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");
491	>	public void testSetThreadFactory() throws InterruptedException {
492	>	ThreadFactory threadFactory = new SimpleThreadFactory();
493	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
494	>	try (PoolCleaner cleaner = cleaner(p)) {
495	>	p.setThreadFactory(threadFactory);
496	>	assertSame(threadFactory, p.getThreadFactory());
497		}
498		}
499	<
499	>
500		/**
501	<	*  The final version of schedule, using both long, TimeUnit and Runnable
501	>	* setThreadFactory(null) throws NPE
502		*/
503	<	public void testSchedule4(){
504	<	try{
505	<	MyRunnable runnable = new MyRunnable();
506	<	ScheduledExecutor one = new ScheduledExecutor(1);
507	<	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
508	<	//      Thread.sleep(505);
509	<	assertTrue(runnable.waiting);
146	<	Thread.sleep(MEDIUM_DELAY_MS);
147	<	assertTrue(runnable.done);
148	<	one.shutdown();
149	<	} catch(Exception e){
150	<	fail("unexpected exception");
503	>	public void testSetThreadFactoryNull() throws InterruptedException {
504	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
505	>	try (PoolCleaner cleaner = cleaner(p)) {
506	>	try {
507	>	p.setThreadFactory(null);
508	>	shouldThrow();
509	>	} catch (NullPointerException success) {}
510		}
511		}
153	–
154	–
155	–	// exception tests
512
513		/**
514	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
159	<	*  This occurs on an attempt to schedule a task on a shutdown executor
514	>	* The default rejected execution handler is AbortPolicy.
515		*/
516	<	public void testSchedule1_RejectedExecutionException(){
517	<	try{
518	<	ScheduledExecutor se = new ScheduledExecutor(1);
519	<	se.shutdown();
520	<	se.schedule(new Runnable(){
521	<	public void run(){}
167	<	}, 10000, TimeUnit.MILLISECONDS);
168	<	fail("shoud throw");
169	<	}catch(RejectedExecutionException e){}
516	>	public void testDefaultRejectedExecutionHandler() {
517	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
518	>	try (PoolCleaner cleaner = cleaner(p)) {
519	>	assertTrue(p.getRejectedExecutionHandler()
520	>	instanceof ThreadPoolExecutor.AbortPolicy);
521	>	}
522		}
523
524		/**
525	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
174	<	*  This occurs on an attempt to schedule a task on a shutdown executor
525	>	* isShutdown is false before shutdown, true after
526		*/
527	<	public void testSchedule2_RejectedExecutionException(){
528	<	try{
529	<	ScheduledExecutor se = new ScheduledExecutor(1);
530	<	se.shutdown();
531	<	se.schedule(new Callable(){
532	<	public Object call(){
533	<	return Boolean.TRUE;
534	<	}
535	<	}, (long)100, TimeUnit.SECONDS);
185	<	fail("should throw");
186	<	}catch(RejectedExecutionException e){}
527	>	public void testIsShutdown() {
528	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
529	>	assertFalse(p.isShutdown());
530	>	try (PoolCleaner cleaner = cleaner(p)) {
531	>	try {
532	>	p.shutdown();
533	>	assertTrue(p.isShutdown());
534	>	} catch (SecurityException ok) {}
535	>	}
536		}
537
538		/**
539	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
540	<	*  This occurs on an attempt to schedule a task on a shutdown executor
541	<	*/
542	<	public void testSchedule3_RejectedExecutionException(){
543	<	try{
544	<	ScheduledExecutor se = new ScheduledExecutor(1);
545	<	se.shutdown();
546	<	se.schedule(new Callable(){
547	<	public Object call(){
548	<	return Boolean.TRUE;
539	>	* isTerminated is false before termination, true after
540	>	*/
541	>	public void testIsTerminated() throws InterruptedException {
542	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
543	>	try (PoolCleaner cleaner = cleaner(p)) {
544	>	final CountDownLatch threadStarted = new CountDownLatch(1);
545	>	final CountDownLatch done = new CountDownLatch(1);
546	>	assertFalse(p.isTerminated());
547	>	p.execute(new CheckedRunnable() {
548	>	public void realRun() throws InterruptedException {
549	>	assertFalse(p.isTerminated());
550	>	threadStarted.countDown();
551	>	await(done);
552	>	}});
553	>	await(threadStarted);
554	>	assertFalse(p.isTerminating());
555	>	done.countDown();
556	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
557	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
558	>	assertTrue(p.isTerminated());
559	>	}
560	>	}
561	>
562	>	/**
563	>	* isTerminating is not true when running or when terminated
564	>	*/
565	>	public void testIsTerminating() throws InterruptedException {
566	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
567	>	final CountDownLatch threadStarted = new CountDownLatch(1);
568	>	final CountDownLatch done = new CountDownLatch(1);
569	>	try (PoolCleaner cleaner = cleaner(p)) {
570	>	assertFalse(p.isTerminating());
571	>	p.execute(new CheckedRunnable() {
572	>	public void realRun() throws InterruptedException {
573	>	assertFalse(p.isTerminating());
574	>	threadStarted.countDown();
575	>	await(done);
576	>	}});
577	>	await(threadStarted);
578	>	assertFalse(p.isTerminating());
579	>	done.countDown();
580	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
581	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
582	>	assertTrue(p.isTerminated());
583	>	assertFalse(p.isTerminating());
584	>	}
585	>	}
586	>
587	>	/**
588	>	* getQueue returns the work queue, which contains queued tasks
589	>	*/
590	>	public void testGetQueue() throws InterruptedException {
591	>	final CountDownLatch done = new CountDownLatch(1);
592	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
593	>	try (PoolCleaner cleaner = cleaner(p, done)) {
594	>	final CountDownLatch threadStarted = new CountDownLatch(1);
595	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
596	>	for (int i = 0; i < tasks.length; i++) {
597	>	Runnable r = new CheckedRunnable() {
598	>	public void realRun() throws InterruptedException {
599	>	threadStarted.countDown();
600	>	await(done);
601	>	}};
602	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
603	>	}
604	>	await(threadStarted);
605	>	BlockingQueue<Runnable> q = p.getQueue();
606	>	assertTrue(q.contains(tasks[tasks.length - 1]));
607	>	assertFalse(q.contains(tasks[0]));
608	>	}
609	>	}
610	>
611	>	/**
612	>	* remove(task) removes queued task, and fails to remove active task
613	>	*/
614	>	public void testRemove() throws InterruptedException {
615	>	final CountDownLatch done = new CountDownLatch(1);
616	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
617	>	try (PoolCleaner cleaner = cleaner(p, done)) {
618	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
619	>	final CountDownLatch threadStarted = new CountDownLatch(1);
620	>	for (int i = 0; i < tasks.length; i++) {
621	>	Runnable r = new CheckedRunnable() {
622	>	public void realRun() throws InterruptedException {
623	>	threadStarted.countDown();
624	>	await(done);
625	>	}};
626	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
627	>	}
628	>	await(threadStarted);
629	>	BlockingQueue<Runnable> q = p.getQueue();
630	>	assertFalse(p.remove((Runnable)tasks[0]));
631	>	assertTrue(q.contains((Runnable)tasks[4]));
632	>	assertTrue(q.contains((Runnable)tasks[3]));
633	>	assertTrue(p.remove((Runnable)tasks[4]));
634	>	assertFalse(p.remove((Runnable)tasks[4]));
635	>	assertFalse(q.contains((Runnable)tasks[4]));
636	>	assertTrue(q.contains((Runnable)tasks[3]));
637	>	assertTrue(p.remove((Runnable)tasks[3]));
638	>	assertFalse(q.contains((Runnable)tasks[3]));
639	>	}
640	>	}
641	>
642	>	/**
643	>	* purge eventually removes cancelled tasks from the queue
644	>	*/
645	>	public void testPurge() throws InterruptedException {
646	>	final ScheduledFuture[] tasks = new ScheduledFuture[5];
647	>	final Runnable releaser = new Runnable() { public void run() {
648	>	for (ScheduledFuture task : tasks)
649	>	if (task != null) task.cancel(true); }};
650	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
651	>	try (PoolCleaner cleaner = cleaner(p, releaser)) {
652	>	for (int i = 0; i < tasks.length; i++)
653	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
654	>	LONG_DELAY_MS, MILLISECONDS);
655	>	int max = tasks.length;
656	>	if (tasks[4].cancel(true)) --max;
657	>	if (tasks[3].cancel(true)) --max;
658	>	// There must eventually be an interference-free point at
659	>	// which purge will not fail. (At worst, when queue is empty.)
660	>	long startTime = System.nanoTime();
661	>	do {
662	>	p.purge();
663	>	long count = p.getTaskCount();
664	>	if (count == max)
665	>	return;
666	>	} while (millisElapsedSince(startTime) < LONG_DELAY_MS);
667	>	fail("Purge failed to remove cancelled tasks");
668	>	}
669	>	}
670	>
671	>	/**
672	>	* shutdownNow returns a list containing tasks that were not run,
673	>	* and those tasks are drained from the queue
674	>	*/
675	>	public void testShutdownNow() throws InterruptedException {
676	>	final int poolSize = 2;
677	>	final int count = 5;
678	>	final AtomicInteger ran = new AtomicInteger(0);
679	>	final ScheduledThreadPoolExecutor p =
680	>	new ScheduledThreadPoolExecutor(poolSize);
681	>	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
682	>	Runnable waiter = new CheckedRunnable() { public void realRun() {
683	>	threadsStarted.countDown();
684	>	try {
685	>	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
686	>	} catch (InterruptedException success) {}
687	>	ran.getAndIncrement();
688	>	}};
689	>	for (int i = 0; i < count; i++)
690	>	p.execute(waiter);
691	>	await(threadsStarted);
692	>	assertEquals(poolSize, p.getActiveCount());
693	>	assertEquals(0, p.getCompletedTaskCount());
694	>	final List<Runnable> queuedTasks;
695	>	try {
696	>	queuedTasks = p.shutdownNow();
697	>	} catch (SecurityException ok) {
698	>	return; // Allowed in case test doesn't have privs
699	>	}
700	>	assertTrue(p.isShutdown());
701	>	assertTrue(p.getQueue().isEmpty());
702	>	assertEquals(count - poolSize, queuedTasks.size());
703	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
704	>	assertTrue(p.isTerminated());
705	>	assertEquals(poolSize, ran.get());
706	>	assertEquals(poolSize, p.getCompletedTaskCount());
707	>	}
708	>
709	>	/**
710	>	* shutdownNow returns a list containing tasks that were not run,
711	>	* and those tasks are drained from the queue
712	>	*/
713	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
714	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
715	>	List<ScheduledFuture> tasks = new ArrayList<>();
716	>	for (int i = 0; i < 3; i++) {
717	>	Runnable r = new NoOpRunnable();
718	>	tasks.add(p.schedule(r, 9, SECONDS));
719	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
720	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
721	>	}
722	>	if (testImplementationDetails)
723	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
724	>	final List<Runnable> queuedTasks;
725	>	try {
726	>	queuedTasks = p.shutdownNow();
727	>	} catch (SecurityException ok) {
728	>	return; // Allowed in case test doesn't have privs
729	>	}
730	>	assertTrue(p.isShutdown());
731	>	assertTrue(p.getQueue().isEmpty());
732	>	if (testImplementationDetails)
733	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
734	>	assertEquals(tasks.size(), queuedTasks.size());
735	>	for (ScheduledFuture task : tasks) {
736	>	assertFalse(task.isDone());
737	>	assertFalse(task.isCancelled());
738	>	}
739	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
740	>	assertTrue(p.isTerminated());
741	>	}
742	>
743	>	/**
744	>	* By default, periodic tasks are cancelled at shutdown.
745	>	* By default, delayed tasks keep running after shutdown.
746	>	* Check that changing the default values work:
747	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
748	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
749	>	*/
750	>	public void testShutdown_cancellation() throws Exception {
751	>	final int poolSize = 4;
752	>	final ScheduledThreadPoolExecutor p
753	>	= new ScheduledThreadPoolExecutor(poolSize);
754	>	final BlockingQueue<Runnable> q = p.getQueue();
755	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
756	>	final long delay = rnd.nextInt(2);
757	>	final int rounds = rnd.nextInt(1, 3);
758	>	final boolean effectiveDelayedPolicy;
759	>	final boolean effectivePeriodicPolicy;
760	>	final boolean effectiveRemovePolicy;
761	>
762	>	if (rnd.nextBoolean())
763	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(
764	>	effectiveDelayedPolicy = rnd.nextBoolean());
765	>	else
766	>	effectiveDelayedPolicy = true;
767	>	assertEquals(effectiveDelayedPolicy,
768	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
769	>
770	>	if (rnd.nextBoolean())
771	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(
772	>	effectivePeriodicPolicy = rnd.nextBoolean());
773	>	else
774	>	effectivePeriodicPolicy = false;
775	>	assertEquals(effectivePeriodicPolicy,
776	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
777	>
778	>	if (rnd.nextBoolean())
779	>	p.setRemoveOnCancelPolicy(
780	>	effectiveRemovePolicy = rnd.nextBoolean());
781	>	else
782	>	effectiveRemovePolicy = false;
783	>	assertEquals(effectiveRemovePolicy,
784	>	p.getRemoveOnCancelPolicy());
785	>
786	>	final boolean periodicTasksContinue = effectivePeriodicPolicy && rnd.nextBoolean();
787	>
788	>	// Strategy: Wedge the pool with one wave of "blocker" tasks,
789	>	// then add a second wave that waits in the queue until unblocked.
790	>	final AtomicInteger ran = new AtomicInteger(0);
791	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
792	>	final CountDownLatch unblock = new CountDownLatch(1);
793	>	final RuntimeException exception = new RuntimeException();
794	>
795	>	class Task implements Runnable {
796	>	public void run() {
797	>	try {
798	>	ran.getAndIncrement();
799	>	poolBlocked.countDown();
800	>	await(unblock);
801	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
802	>	}
803	>	}
804	>
805	>	class PeriodicTask extends Task {
806	>	PeriodicTask(int rounds) { this.rounds = rounds; }
807	>	int rounds;
808	>	public void run() {
809	>	if (--rounds == 0) super.run();
810	>	// throw exception to surely terminate this periodic task,
811	>	// but in a separate execution and in a detectable way.
812	>	if (rounds == -1) throw exception;
813	>	}
814	>	}
815	>
816	>	Runnable task = new Task();
817	>
818	>	List<Future<?>> immediates = new ArrayList<>();
819	>	List<Future<?>> delayeds   = new ArrayList<>();
820	>	List<Future<?>> periodics  = new ArrayList<>();
821	>
822	>	immediates.add(p.submit(task));
823	>	delayeds.add(p.schedule(task, delay, MILLISECONDS));
824	>	periodics.add(p.scheduleAtFixedRate(
825	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
826	>	periodics.add(p.scheduleWithFixedDelay(
827	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
828	>
829	>	await(poolBlocked);
830	>
831	>	assertEquals(poolSize, ran.get());
832	>	assertEquals(poolSize, p.getActiveCount());
833	>	assertTrue(q.isEmpty());
834	>
835	>	// Add second wave of tasks.
836	>	immediates.add(p.submit(task));
837	>	delayeds.add(p.schedule(task, effectiveDelayedPolicy ? delay : LONG_DELAY_MS, MILLISECONDS));
838	>	periodics.add(p.scheduleAtFixedRate(
839	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
840	>	periodics.add(p.scheduleWithFixedDelay(
841	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
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(2, 4)));
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 (effectivePeriodicPolicy)
882	>	periodics.forEach(
883	>	f -> {
884	>	assertFalse(f.isDone());
885	>	if (!periodicTasksContinue) {
886	>	assertTrue(f.cancel(false));
887	>	assertTrue(f.isCancelled());
888	>	}
889	>	});
890	>	else {
891	>	periodics.subList(0, 2).forEach(f -> assertFalse(f.isDone()));
892	>	periodics.subList(2, 4).forEach(f -> assertTrue(f.isCancelled()));
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 ? 2 : 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 NullPointerException
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/2);
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 IllegalArgumentException
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 NullPointerException 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/2);
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/2);
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 list
1058	>	*/
1059	>	public void testInvokeAll2() throws Exception {
1060	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1061	>	final Collection<Callable<String>> emptyCollection
1062	>	= Collections.emptyList();
1063	>	try (PoolCleaner cleaner = cleaner(e)) {
1064	>	List<Future<String>> r = e.invokeAll(emptyCollection);
1065	>	assertTrue(r.isEmpty());
1066		}
403	–	assertTrue(one.isShutdown());
1067		}
1068
406	–
1069		/**
1070	<	*  Test to verify isTerminated gives correct values
409	<	*  Makes sure termination does not take an innapropriate
410	<	*  amount of time
1070	>	* invokeAll(c) throws NPE if c has null elements
1071		*/
1072	<	public void testIsTerminated(){
1073	<	ScheduledExecutor one = new ScheduledExecutor(1);
1074	<	try {
1075	<	one.execute(newRunnable());
1076	<	} finally {
1077	<	one.shutdown();
1078	<	}
1079	<	boolean flag = false;
1080	<	try{
1081	<	flag = one.awaitTermination(10, TimeUnit.SECONDS);
1082	<	} 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");
1072	>	public void testInvokeAll3() throws Exception {
1073	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1074	>	try (PoolCleaner cleaner = cleaner(e)) {
1075	>	List<Callable<String>> l = new ArrayList<>();
1076	>	l.add(new StringTask());
1077	>	l.add(null);
1078	>	try {
1079	>	e.invokeAll(l);
1080	>	shouldThrow();
1081	>	} catch (NullPointerException success) {}
1082	>	}
1083		}
1084
1085		/**
1086	<	*  Test to verify that purge correctly removes cancelled tasks
432	<	*  from the queue
1086	>	* get of invokeAll(c) throws exception on failed task
1087		*/
1088	<	public void testPurge(){
1089	<	ScheduledExecutor one = new ScheduledExecutor(1);
1090	<	try {
1091	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1092	<	for(int i = 0; i < 5; i++){
1093	<	tasks[i] = one.schedule(newRunnable(), 1, TimeUnit.MILLISECONDS);
1088	>	public void testInvokeAll4() throws Exception {
1089	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1090	>	try (PoolCleaner cleaner = cleaner(e)) {
1091	>	List<Callable<String>> l = new ArrayList<>();
1092	>	l.add(new NPETask());
1093	>	List<Future<String>> futures = e.invokeAll(l);
1094	>	assertEquals(1, futures.size());
1095	>	try {
1096	>	futures.get(0).get();
1097	>	shouldThrow();
1098	>	} catch (ExecutionException success) {
1099	>	assertTrue(success.getCause() instanceof NullPointerException);
1100		}
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();
1101		}
1102		}
1103
1104		/**
1105	<	*  Test to verify shutDownNow returns a list
454	<	*  containing the correct number of elements
1105	>	* invokeAll(c) returns results of all completed tasks
1106		*/
1107	<	public void testShutDownNow(){
1108	<	ScheduledExecutor one = new ScheduledExecutor(1);
1109	<	for(int i = 0; i < 5; i++)
1110	<	one.schedule(newRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
1111	<	List l = one.shutdownNow();
1112	<	assertTrue(one.isShutdown());
1113	<	assertTrue(l.size() > 0 && l.size() <= 5);
1107	>	public void testInvokeAll5() throws Exception {
1108	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1109	>	try (PoolCleaner cleaner = cleaner(e)) {
1110	>	List<Callable<String>> l = new ArrayList<>();
1111	>	l.add(new StringTask());
1112	>	l.add(new StringTask());
1113	>	List<Future<String>> futures = e.invokeAll(l);
1114	>	assertEquals(2, futures.size());
1115	>	for (Future<String> future : futures)
1116	>	assertSame(TEST_STRING, future.get());
1117	>	}
1118		}
1119
1120	<	public void testShutDown1(){
1121	<	try {
1122	<	ScheduledExecutor one = new ScheduledExecutor(1);
1123	<	assertTrue(one.getExecuteExistingDelayedTasksAfterShutdownPolicy());
1124	<	assertFalse(one.getContinueExistingPeriodicTasksAfterShutdownPolicy());
1120	>	/**
1121	>	* timed invokeAny(null) throws NPE
1122	>	*/
1123	>	public void testTimedInvokeAny1() throws Exception {
1124	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1125	>	try (PoolCleaner cleaner = cleaner(e)) {
1126	>	try {
1127	>	e.invokeAny(null, randomTimeout(), randomTimeUnit());
1128	>	shouldThrow();
1129	>	} catch (NullPointerException success) {}
1130	>	}
1131	>	}
1132
1133	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1134	<	for(int i = 0; i < 5; i++)
1135	<	tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
1136	<	one.shutdown();
1137	<	BlockingQueue q = one.getQueue();
1138	<	for (Iterator it = q.iterator(); it.hasNext();) {
1139	<	ScheduledCancellable t = (ScheduledCancellable)it.next();
1140	<	assertFalse(t.isCancelled());
1141	<	}
1142	<	assertTrue(one.isShutdown());
1143	<	Thread.sleep(SHORT_DELAY_MS);
1144	<	for (int i = 0; i < 5; ++i) {
483	<	assertTrue(tasks[i].isDone());
484	<	assertFalse(tasks[i].isCancelled());
485	<	}
486	<
1133	>	/**
1134	>	* timed invokeAny(,,null) throws NullPointerException
1135	>	*/
1136	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1137	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1138	>	try (PoolCleaner cleaner = cleaner(e)) {
1139	>	List<Callable<String>> l = new ArrayList<>();
1140	>	l.add(new StringTask());
1141	>	try {
1142	>	e.invokeAny(l, randomTimeout(), null);
1143	>	shouldThrow();
1144	>	} catch (NullPointerException success) {}
1145		}
1146	<	catch(Exception ex) {
1147	<	fail("unexpected exception");
1146	>	}
1147	>
1148	>	/**
1149	>	* timed invokeAny(empty collection) throws IllegalArgumentException
1150	>	*/
1151	>	public void testTimedInvokeAny2() throws Exception {
1152	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1153	>	final Collection<Callable<String>> emptyCollection
1154	>	= Collections.emptyList();
1155	>	try (PoolCleaner cleaner = cleaner(e)) {
1156	>	try {
1157	>	e.invokeAny(emptyCollection, randomTimeout(), randomTimeUnit());
1158	>	shouldThrow();
1159	>	} catch (IllegalArgumentException success) {}
1160		}
1161		}
1162
1163	+	/**
1164	+	* timed invokeAny(c) throws NPE if c has null elements
1165	+	*/
1166	+	public void testTimedInvokeAny3() throws Exception {
1167	+	CountDownLatch latch = new CountDownLatch(1);
1168	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1169	+	try (PoolCleaner cleaner = cleaner(e)) {
1170	+	List<Callable<String>> l = new ArrayList<>();
1171	+	l.add(latchAwaitingStringTask(latch));
1172	+	l.add(null);
1173	+	try {
1174	+	e.invokeAny(l, randomTimeout(), randomTimeUnit());
1175	+	shouldThrow();
1176	+	} catch (NullPointerException success) {}
1177	+	latch.countDown();
1178	+	}
1179	+	}
1180
1181	<	public void testShutDown2(){
1182	<	try {
1183	<	ScheduledExecutor one = new ScheduledExecutor(1);
1184	<	one.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
1185	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1186	<	for(int i = 0; i < 5; i++)
1187	<	tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
1188	<	one.shutdown();
1189	<	assertTrue(one.isShutdown());
1190	<	BlockingQueue q = one.getQueue();
1191	<	assertTrue(q.isEmpty());
1192	<	Thread.sleep(SHORT_DELAY_MS);
1193	<	assertTrue(one.isTerminated());
1181	>	/**
1182	>	* timed invokeAny(c) throws ExecutionException if no task completes
1183	>	*/
1184	>	public void testTimedInvokeAny4() throws Exception {
1185	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1186	>	try (PoolCleaner cleaner = cleaner(e)) {
1187	>	long startTime = System.nanoTime();
1188	>	List<Callable<String>> l = new ArrayList<>();
1189	>	l.add(new NPETask());
1190	>	try {
1191	>	e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1192	>	shouldThrow();
1193	>	} catch (ExecutionException success) {
1194	>	assertTrue(success.getCause() instanceof NullPointerException);
1195	>	}
1196	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1197		}
1198	<	catch(Exception ex) {
1199	<	fail("unexpected exception");
1198	>	}
1199	>
1200	>	/**
1201	>	* timed invokeAny(c) returns result of some task
1202	>	*/
1203	>	public void testTimedInvokeAny5() throws Exception {
1204	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1205	>	try (PoolCleaner cleaner = cleaner(e)) {
1206	>	long startTime = System.nanoTime();
1207	>	List<Callable<String>> l = new ArrayList<>();
1208	>	l.add(new StringTask());
1209	>	l.add(new StringTask());
1210	>	String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1211	>	assertSame(TEST_STRING, result);
1212	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1213	>	}
1214	>	}
1215	>
1216	>	/**
1217	>	* timed invokeAll(null) throws NPE
1218	>	*/
1219	>	public void testTimedInvokeAll1() throws Exception {
1220	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1221	>	try (PoolCleaner cleaner = cleaner(e)) {
1222	>	try {
1223	>	e.invokeAll(null, randomTimeout(), randomTimeUnit());
1224	>	shouldThrow();
1225	>	} catch (NullPointerException success) {}
1226		}
1227		}
1228
1229	+	/**
1230	+	* timed invokeAll(,,null) throws NPE
1231	+	*/
1232	+	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1233	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1234	+	try (PoolCleaner cleaner = cleaner(e)) {
1235	+	List<Callable<String>> l = new ArrayList<>();
1236	+	l.add(new StringTask());
1237	+	try {
1238	+	e.invokeAll(l, randomTimeout(), null);
1239	+	shouldThrow();
1240	+	} catch (NullPointerException success) {}
1241	+	}
1242	+	}
1243
1244	<	public void testShutDown3(){
1245	<	try {
1246	<	ScheduledExecutor one = new ScheduledExecutor(1);
1247	<	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
1248	<	ScheduledCancellable task =
1249	<	one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1250	<	one.shutdown();
1251	<	assertTrue(one.isShutdown());
1252	<	BlockingQueue q = one.getQueue();
1253	<	assertTrue(q.isEmpty());
1254	<	Thread.sleep(SHORT_DELAY_MS);
525	<	assertTrue(one.isTerminated());
1244	>	/**
1245	>	* timed invokeAll(empty collection) returns empty list
1246	>	*/
1247	>	public void testTimedInvokeAll2() throws Exception {
1248	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1249	>	final Collection<Callable<String>> emptyCollection
1250	>	= Collections.emptyList();
1251	>	try (PoolCleaner cleaner = cleaner(e)) {
1252	>	List<Future<String>> r =
1253	>	e.invokeAll(emptyCollection, randomTimeout(), randomTimeUnit());
1254	>	assertTrue(r.isEmpty());
1255		}
1256	<	catch(Exception ex) {
1257	<	fail("unexpected exception");
1256	>	}
1257	>
1258	>	/**
1259	>	* timed invokeAll(c) throws NPE if c has null elements
1260	>	*/
1261	>	public void testTimedInvokeAll3() throws Exception {
1262	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1263	>	try (PoolCleaner cleaner = cleaner(e)) {
1264	>	List<Callable<String>> l = new ArrayList<>();
1265	>	l.add(new StringTask());
1266	>	l.add(null);
1267	>	try {
1268	>	e.invokeAll(l, randomTimeout(), randomTimeUnit());
1269	>	shouldThrow();
1270	>	} catch (NullPointerException success) {}
1271		}
1272		}
1273
1274	<	public void testShutDown4(){
1275	<	ScheduledExecutor one = new ScheduledExecutor(1);
1276	<	try {
1277	<	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
1278	<	ScheduledCancellable task =
1279	<	one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1280	<	assertFalse(task.isCancelled());
1281	<	one.shutdown();
1282	<	assertFalse(task.isCancelled());
1283	<	assertFalse(one.isTerminated());
1284	<	assertTrue(one.isShutdown());
1285	<	Thread.sleep(SHORT_DELAY_MS);
1286	<	assertFalse(task.isCancelled());
1287	<	task.cancel(true);
1288	<	assertTrue(task.isCancelled());
1289	<	Thread.sleep(SHORT_DELAY_MS);
1290	<	assertTrue(one.isTerminated());
1274	>	/**
1275	>	* get of element of invokeAll(c) throws exception on failed task
1276	>	*/
1277	>	public void testTimedInvokeAll4() throws Exception {
1278	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1279	>	try (PoolCleaner cleaner = cleaner(e)) {
1280	>	List<Callable<String>> l = new ArrayList<>();
1281	>	l.add(new NPETask());
1282	>	List<Future<String>> futures =
1283	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1284	>	assertEquals(1, futures.size());
1285	>	try {
1286	>	futures.get(0).get();
1287	>	shouldThrow();
1288	>	} catch (ExecutionException success) {
1289	>	assertTrue(success.getCause() instanceof NullPointerException);
1290	>	}
1291		}
1292	<	catch(Exception ex) {
1293	<	fail("unexpected exception");
1292	>	}
1293	>
1294	>	/**
1295	>	* timed invokeAll(c) returns results of all completed tasks
1296	>	*/
1297	>	public void testTimedInvokeAll5() throws Exception {
1298	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1299	>	try (PoolCleaner cleaner = cleaner(e)) {
1300	>	List<Callable<String>> l = new ArrayList<>();
1301	>	l.add(new StringTask());
1302	>	l.add(new StringTask());
1303	>	List<Future<String>> futures =
1304	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1305	>	assertEquals(2, futures.size());
1306	>	for (Future<String> future : futures)
1307	>	assertSame(TEST_STRING, future.get());
1308	>	}
1309	>	}
1310	>
1311	>	/**
1312	>	* timed invokeAll(c) cancels tasks not completed by timeout
1313	>	*/
1314	>	public void testTimedInvokeAll6() throws Exception {
1315	>	for (long timeout = timeoutMillis();;) {
1316	>	final CountDownLatch done = new CountDownLatch(1);
1317	>	final Callable<String> waiter = new CheckedCallable<String>() {
1318	>	public String realCall() {
1319	>	try { done.await(LONG_DELAY_MS, MILLISECONDS); }
1320	>	catch (InterruptedException ok) {}
1321	>	return "1"; }};
1322	>	final ExecutorService p = new ScheduledThreadPoolExecutor(2);
1323	>	try (PoolCleaner cleaner = cleaner(p, done)) {
1324	>	List<Callable<String>> tasks = new ArrayList<>();
1325	>	tasks.add(new StringTask("0"));
1326	>	tasks.add(waiter);
1327	>	tasks.add(new StringTask("2"));
1328	>	long startTime = System.nanoTime();
1329	>	List<Future<String>> futures =
1330	>	p.invokeAll(tasks, timeout, MILLISECONDS);
1331	>	assertEquals(tasks.size(), futures.size());
1332	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1333	>	for (Future future : futures)
1334	>	assertTrue(future.isDone());
1335	>	assertTrue(futures.get(1).isCancelled());
1336	>	try {
1337	>	assertEquals("0", futures.get(0).get());
1338	>	assertEquals("2", futures.get(2).get());
1339	>	break;
1340	>	} catch (CancellationException retryWithLongerTimeout) {
1341	>	timeout *= 2;
1342	>	if (timeout >= LONG_DELAY_MS / 2)
1343	>	fail("expected exactly one task to be cancelled");
1344	>	}
1345	>	}
1346		}
1347	<	finally {
1348	<	one.shutdownNow();
1347	>	}
1348	>
1349	>	/**
1350	>	* A fixed delay task with overflowing period should not prevent a
1351	>	* one-shot task from executing.
1352	>	* https://bugs.openjdk.java.net/browse/JDK-8051859
1353	>	*/
1354	>	public void testScheduleWithFixedDelay_overflow() throws Exception {
1355	>	final CountDownLatch delayedDone = new CountDownLatch(1);
1356	>	final CountDownLatch immediateDone = new CountDownLatch(1);
1357	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
1358	>	try (PoolCleaner cleaner = cleaner(p)) {
1359	>	final Runnable immediate = new Runnable() { public void run() {
1360	>	immediateDone.countDown();
1361	>	}};
1362	>	final Runnable delayed = new Runnable() { public void run() {
1363	>	delayedDone.countDown();
1364	>	p.submit(immediate);
1365	>	}};
1366	>	p.scheduleWithFixedDelay(delayed, 0L, Long.MAX_VALUE, SECONDS);
1367	>	await(delayedDone);
1368	>	await(immediateDone);
1369		}
1370		}
1371

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