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

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:55 2003 UTC vs.
Revision 1.54 by jsr166, Sun Sep 27 20:17:39 2015 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
10	<	import java.util.concurrent.*;
11	<
12	<	public class ScheduledExecutorTest extends TestCase{
13	<
14	<	boolean flag = false;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.SECONDS;
11
12	+	import java.util.ArrayList;
13	+	import java.util.HashSet;
14	+	import java.util.List;
15	+	import java.util.concurrent.BlockingQueue;
16	+	import java.util.concurrent.Callable;
17	+	import java.util.concurrent.CancellationException;
18	+	import java.util.concurrent.CountDownLatch;
19	+	import java.util.concurrent.ExecutionException;
20	+	import java.util.concurrent.Executors;
21	+	import java.util.concurrent.ExecutorService;
22	+	import java.util.concurrent.Future;
23	+	import java.util.concurrent.RejectedExecutionException;
24	+	import java.util.concurrent.ScheduledFuture;
25	+	import java.util.concurrent.ScheduledThreadPoolExecutor;
26	+	import java.util.concurrent.ThreadFactory;
27	+	import java.util.concurrent.ThreadPoolExecutor;
28	+	import java.util.concurrent.atomic.AtomicInteger;
29	+
30	+	import junit.framework.Test;
31	+	import junit.framework.TestSuite;
32	+
33	+	public class ScheduledExecutorTest extends JSR166TestCase {
34		public static void main(String[] args) {
35	<	junit.textui.TestRunner.run (suite());
35	>	main(suite(), args);
36		}
19	–
20	–
37		public static Test suite() {
38	<	return new TestSuite(ScheduledExecutorTest.class);
38	>	return new TestSuite(ScheduledExecutorTest.class);
39		}
40
41	<	private static long SHORT_DELAY_MS = 100;
42	<	private static long MEDIUM_DELAY_MS = 1000;
43	<	private static long LONG_DELAY_MS = 10000;
44	<
45	<	static class MyRunnable implements Runnable {
46	<	volatile boolean waiting = true;
47	<	volatile boolean done = false;
48	<	public void run(){
49	<	try{
50	<	Thread.sleep(MEDIUM_DELAY_MS);
51	<	waiting = false;
52	<	done = true;
53	<	} catch(Exception e){}
54	<	}
55	<	}
56	<
41	<	static class MyCallable implements Callable {
42	<	volatile boolean waiting = true;
43	<	volatile boolean done = false;
44	<	public Object call(){
45	<	try{
46	<	Thread.sleep(MEDIUM_DELAY_MS);
47	<	waiting = false;
48	<	done = true;
49	<	}catch(Exception e){}
50	<	return Boolean.TRUE;
51	<	}
52	<	}
53	<
54	<	/**
55	<	*  Test to verify execute successfully runs the given Runnable
56	<	*/
57	<	public void testExecute(){
58	<	try{
59	<	MyRunnable runnable =new MyRunnable();
60	<	ScheduledExecutor one = new ScheduledExecutor(1);
61	<	one.execute(runnable);
62	<	Thread.sleep(100);
63	<	assertTrue(runnable.waiting);
64	<	one.shutdown();
65	<	// make sure the Runnable has time to complete
66	<	try{Thread.sleep(1010);}catch(InterruptedException e){}
67	<	assertFalse(runnable.waiting);
68	<	assertTrue(runnable.done);
69	<	one.shutdown();
70	<	}
71	<	catch(Exception e){
72	<	fail("unexpected exception");
73	<	}
74	<	}
75	<
76	<	/**
77	<	*  Test to verify schedule successfully runs the given Callable.
78	<	*  The waiting flag shows that the Callable is not started until
79	<	*  immediately.
80	<	*/
81	<	public void testSchedule1(){
82	<	try{
83	<	MyCallable callable = new MyCallable();
84	<	ScheduledExecutor one = new ScheduledExecutor(1);
85	<	Future f = one.schedule(callable, 500, TimeUnit.MILLISECONDS);
86	<	//      Thread.sleep(505);
87	<	assertTrue(callable.waiting);
88	<	Thread.sleep(2000);
89	<	assertTrue(callable.done);
90	<	assertEquals(Boolean.TRUE, f.get());
91	<	one.shutdown();
92	<	}catch(RejectedExecutionException e){}
93	<	catch(Exception e){}
94	<	}
95	<
96	<	/**
97	<	*  Another version of schedule, only using Runnable instead of Callable
98	<	*/
99	<	public void testSchedule3(){
100	<	try{
101	<	MyRunnable runnable = new MyRunnable();
102	<	ScheduledExecutor one = new ScheduledExecutor(1);
103	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
104	<	Thread.sleep(50);
105	<	assertTrue(runnable.waiting);
106	<	Thread.sleep(2000);
107	<	assertTrue(runnable.done);
108	<	one.shutdown();
109	<	} catch(Exception e){
110	<	fail("unexpected exception");
111	<	}
112	<	}
113	<
114	<	/**
115	<	*  The final version of schedule, using both long, TimeUnit and Runnable
116	<	*/
117	<	public void testSchedule4(){
118	<	try{
119	<	MyRunnable runnable = new MyRunnable();
120	<	ScheduledExecutor one = new ScheduledExecutor(1);
121	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
122	<	//      Thread.sleep(505);
123	<	assertTrue(runnable.waiting);
124	<	Thread.sleep(2000);
125	<	assertTrue(runnable.done);
126	<	one.shutdown();
127	<	} catch(Exception e){
128	<	fail("unexpected exception");
129	<	}
130	<	}
131	<
132	<
133	<	// exception tests
134	<
135	<	/**
136	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
137	<	*  This occurs on an attempt to schedule a task on a shutdown executor
138	<	*/
139	<	public void testSchedule1_RejectedExecutionException(){
140	<	try{
141	<	ScheduledExecutor se = new ScheduledExecutor(1);
142	<	se.shutdown();
143	<	se.schedule(new Runnable(){
144	<	public void run(){}
145	<	}, 10000, TimeUnit.MILLISECONDS);
146	<	fail("shoud throw");
147	<	}catch(RejectedExecutionException e){}
41	>	/**
42	>	* execute successfully executes a runnable
43	>	*/
44	>	public void testExecute() throws InterruptedException {
45	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
46	>	final CountDownLatch done = new CountDownLatch(1);
47	>	final Runnable task = new CheckedRunnable() {
48	>	public void realRun() {
49	>	done.countDown();
50	>	}};
51	>	try {
52	>	p.execute(task);
53	>	assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS));
54	>	} finally {
55	>	joinPool(p);
56	>	}
57		}
58
59		/**
60	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
152	<	*  This occurs on an attempt to schedule a task on a shutdown executor
60	>	* delayed schedule of callable successfully executes after delay
61		*/
62	<	public void testSchedule2_RejectedExecutionException(){
63	<	try{
64	<	ScheduledExecutor se = new ScheduledExecutor(1);
65	<	se.shutdown();
66	<	se.schedule(new Callable(){
67	<	public Object call(){
68	<	return Boolean.TRUE;
69	<	}
70	<	}, (long)100, TimeUnit.SECONDS);
71	<	fail("should throw");
72	<	}catch(RejectedExecutionException e){}
62	>	public void testSchedule1() throws Exception {
63	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
64	>	final long startTime = System.nanoTime();
65	>	final CountDownLatch done = new CountDownLatch(1);
66	>	try {
67	>	Callable task = new CheckedCallable<Boolean>() {
68	>	public Boolean realCall() {
69	>	done.countDown();
70	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
71	>	return Boolean.TRUE;
72	>	}};
73	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
74	>	assertSame(Boolean.TRUE, f.get());
75	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
76	>	assertTrue(done.await(0L, MILLISECONDS));
77	>	} finally {
78	>	joinPool(p);
79	>	}
80		}
81
82		/**
83	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
84	<	*  This occurs on an attempt to schedule a task on a shutdown executor
85	<	*/
86	<	public void testSchedule3_RejectedExecutionException(){
87	<	try{
88	<	ScheduledExecutor se = new ScheduledExecutor(1);
89	<	se.shutdown();
90	<	se.schedule(new Callable(){
91	<	public Object call(){
92	<	return Boolean.TRUE;
93	<	}
94	<	},  10000, TimeUnit.MILLISECONDS);
95	<	fail("should throw");
96	<	}catch(RejectedExecutionException e){}
83	>	* delayed schedule of runnable successfully executes after delay
84	>	*/
85	>	public void testSchedule3() throws Exception {
86	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
87	>	final long startTime = System.nanoTime();
88	>	final CountDownLatch done = new CountDownLatch(1);
89	>	try {
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	>	} finally {
100	>	joinPool(p);
101	>	}
102	>	}
103	>
104	>	/**
105	>	* scheduleAtFixedRate executes runnable after given initial delay
106	>	*/
107	>	public void testSchedule4() throws Exception {
108	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
109	>	final long startTime = System.nanoTime();
110	>	final CountDownLatch done = new CountDownLatch(1);
111	>	try {
112	>	Runnable task = new CheckedRunnable() {
113	>	public void realRun() {
114	>	done.countDown();
115	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
116	>	}};
117	>	ScheduledFuture f =
118	>	p.scheduleAtFixedRate(task, timeoutMillis(),
119	>	LONG_DELAY_MS, MILLISECONDS);
120	>	await(done);
121	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
122	>	f.cancel(true);
123	>	} finally {
124	>	joinPool(p);
125	>	}
126	>	}
127	>
128	>	/**
129	>	* scheduleWithFixedDelay executes runnable after given initial delay
130	>	*/
131	>	public void testSchedule5() throws Exception {
132	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
133	>	final long startTime = System.nanoTime();
134	>	final CountDownLatch done = new CountDownLatch(1);
135	>	try {
136	>	Runnable task = new CheckedRunnable() {
137	>	public void realRun() {
138	>	done.countDown();
139	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
140	>	}};
141	>	ScheduledFuture f =
142	>	p.scheduleWithFixedDelay(task, timeoutMillis(),
143	>	LONG_DELAY_MS, MILLISECONDS);
144	>	await(done);
145	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
146	>	f.cancel(true);
147	>	} finally {
148	>	joinPool(p);
149	>	}
150	>	}
151	>
152	>	static class RunnableCounter implements Runnable {
153	>	AtomicInteger count = new AtomicInteger(0);
154	>	public void run() { count.getAndIncrement(); }
155	>	}
156	>
157	>	/**
158	>	* scheduleAtFixedRate executes series of tasks at given rate
159	>	*/
160	>	public void testFixedRateSequence() throws InterruptedException {
161	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
162	>	try {
163	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
164	>	long startTime = System.nanoTime();
165	>	int cycles = 10;
166	>	final CountDownLatch done = new CountDownLatch(cycles);
167	>	Runnable task = new CheckedRunnable() {
168	>	public void realRun() { done.countDown(); }};
169	>	ScheduledFuture h =
170	>	p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
171	>	done.await();
172	>	h.cancel(true);
173	>	double normalizedTime =
174	>	(double) millisElapsedSince(startTime) / delay;
175	>	if (normalizedTime >= cycles - 1 &&
176	>	normalizedTime <= cycles)
177	>	return;
178	>	}
179	>	throw new AssertionError("unexpected execution rate");
180	>	} finally {
181	>	joinPool(p);
182	>	}
183	>	}
184	>
185	>	/**
186	>	* scheduleWithFixedDelay executes series of tasks with given period
187	>	*/
188	>	public void testFixedDelaySequence() throws InterruptedException {
189	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
190	>	try {
191	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
192	>	long startTime = System.nanoTime();
193	>	int cycles = 10;
194	>	final CountDownLatch done = new CountDownLatch(cycles);
195	>	Runnable task = new CheckedRunnable() {
196	>	public void realRun() { done.countDown(); }};
197	>	ScheduledFuture h =
198	>	p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
199	>	done.await();
200	>	h.cancel(true);
201	>	double normalizedTime =
202	>	(double) millisElapsedSince(startTime) / delay;
203	>	if (normalizedTime >= cycles - 1 &&
204	>	normalizedTime <= cycles)
205	>	return;
206	>	}
207	>	throw new AssertionError("unexpected execution rate");
208	>	} finally {
209	>	joinPool(p);
210	>	}
211	>	}
212	>
213	>	/**
214	>	* execute(null) throws NPE
215	>	*/
216	>	public void testExecuteNull() throws InterruptedException {
217	>	ScheduledThreadPoolExecutor se = null;
218	>	try {
219	>	se = new ScheduledThreadPoolExecutor(1);
220	>	se.execute(null);
221	>	shouldThrow();
222	>	} catch (NullPointerException success) {}
223	>
224	>	joinPool(se);
225		}
226
227		/**
228	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
229	<	*  RejectedExecutionException.
230	<	*  This occurs on an attempt to schedule a task on a shutdown executor
231	<	*/
232	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
233	<	try{
234	<	ScheduledExecutor se = new ScheduledExecutor(1);
228	>	* schedule(null) throws NPE
229	>	*/
230	>	public void testScheduleNull() throws InterruptedException {
231	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
232	>	try {
233	>	TrackedCallable callable = null;
234	>	Future f = se.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
235	>	shouldThrow();
236	>	} catch (NullPointerException success) {}
237	>	joinPool(se);
238	>	}
239	>
240	>	/**
241	>	* execute throws RejectedExecutionException if shutdown
242	>	*/
243	>	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
244	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
245	>	try {
246		se.shutdown();
247	<	se.scheduleAtFixedRate(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 scheduleAtFixedRate(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 testScheduleAtFixedRate2_RejectedExecutionException(){
260	<	try{
261	<	ScheduledExecutor se = new ScheduledExecutor(1);
247	>	se.schedule(new NoOpRunnable(),
248	>	MEDIUM_DELAY_MS, MILLISECONDS);
249	>	shouldThrow();
250	>	} catch (RejectedExecutionException success) {
251	>	} catch (SecurityException ok) {
252	>	}
253	>
254	>	joinPool(se);
255	>	}
256	>
257	>	/**
258	>	* schedule throws RejectedExecutionException if shutdown
259	>	*/
260	>	public void testSchedule2_RejectedExecutionException() throws InterruptedException {
261	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
262	>	try {
263		se.shutdown();
264	<	se.scheduleAtFixedRate(new Runnable(){
265	<	public void run(){}
266	<	},  1, 100, TimeUnit.SECONDS);
267	<	fail("should throw");
268	<	}catch(RejectedExecutionException e){}
264	>	se.schedule(new NoOpCallable(),
265	>	MEDIUM_DELAY_MS, MILLISECONDS);
266	>	shouldThrow();
267	>	} catch (RejectedExecutionException success) {
268	>	} catch (SecurityException ok) {
269	>	}
270	>	joinPool(se);
271		}
272
273		/**
274	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
218	<	*  RejectedExecutionException.
219	<	*  This occurs on an attempt to schedule a task on a shutdown executor
274	>	* schedule callable throws RejectedExecutionException if shutdown
275		*/
276	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
277	<	try{
278	<	ScheduledExecutor se = new ScheduledExecutor(1);
276	>	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
277	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
278	>	try {
279		se.shutdown();
280	<	se.scheduleWithFixedDelay(new Runnable(){
281	<	public void run(){}
282	<	}, 100, 100, TimeUnit.SECONDS);
283	<	fail("should throw");
284	<	}catch(RejectedExecutionException e){}
280	>	se.schedule(new NoOpCallable(),
281	>	MEDIUM_DELAY_MS, MILLISECONDS);
282	>	shouldThrow();
283	>	} catch (RejectedExecutionException success) {
284	>	} catch (SecurityException ok) {
285	>	}
286	>	joinPool(se);
287		}
288
289		/**
290	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
234	<	*  RejectedExecutionException.
235	<	*  This occurs on an attempt to schedule a task on a shutdown executor
290	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
291		*/
292	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
293	<	try{
294	<	ScheduledExecutor se = new ScheduledExecutor(1);
292	>	public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
293	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
294	>	try {
295		se.shutdown();
296	<	se.scheduleWithFixedDelay(new Runnable(){
297	<	public void run(){}
298	<	},  1, 100, TimeUnit.SECONDS);
299	<	fail("should throw");
300	<	}catch(RejectedExecutionException e){}
296	>	se.scheduleAtFixedRate(new NoOpRunnable(),
297	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
298	>	shouldThrow();
299	>	} catch (RejectedExecutionException success) {
300	>	} catch (SecurityException ok) {
301	>	}
302	>	joinPool(se);
303		}
304
305		/**
306	<	*  Test to verify execute throws RejectedExecutionException
250	<	*  This occurs on an attempt to schedule a task on a shutdown executor
306	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
307		*/
308	<	public void testExecute_RejectedExecutionException(){
309	<	try{
310	<	ScheduledExecutor se = new ScheduledExecutor(1);
308	>	public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
309	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
310	>	try {
311		se.shutdown();
312	<	se.execute(new Runnable(){
313	<	public void run(){}
314	<	});
315	<	fail("should throw");
316	<	}catch(RejectedExecutionException e){}
312	>	se.scheduleWithFixedDelay(new NoOpRunnable(),
313	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
314	>	shouldThrow();
315	>	} catch (RejectedExecutionException success) {
316	>	} catch (SecurityException ok) {
317	>	}
318	>	joinPool(se);
319	>	}
320	>
321	>	/**
322	>	* getActiveCount increases but doesn't overestimate, when a
323	>	* thread becomes active
324	>	*/
325	>	public void testGetActiveCount() throws InterruptedException {
326	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
327	>	final CountDownLatch threadStarted = new CountDownLatch(1);
328	>	final CountDownLatch done = new CountDownLatch(1);
329	>	try {
330	>	assertEquals(0, p.getActiveCount());
331	>	p.execute(new CheckedRunnable() {
332	>	public void realRun() throws InterruptedException {
333	>	threadStarted.countDown();
334	>	assertEquals(1, p.getActiveCount());
335	>	done.await();
336	>	}});
337	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
338	>	assertEquals(1, p.getActiveCount());
339	>	} finally {
340	>	done.countDown();
341	>	joinPool(p);
342	>	}
343	>	}
344	>
345	>	/**
346	>	* getCompletedTaskCount increases, but doesn't overestimate,
347	>	* when tasks complete
348	>	*/
349	>	public void testGetCompletedTaskCount() throws InterruptedException {
350	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
351	>	final CountDownLatch threadStarted = new CountDownLatch(1);
352	>	final CountDownLatch threadProceed = new CountDownLatch(1);
353	>	final CountDownLatch threadDone = new CountDownLatch(1);
354	>	try {
355	>	assertEquals(0, p.getCompletedTaskCount());
356	>	p.execute(new CheckedRunnable() {
357	>	public void realRun() throws InterruptedException {
358	>	threadStarted.countDown();
359	>	assertEquals(0, p.getCompletedTaskCount());
360	>	threadProceed.await();
361	>	threadDone.countDown();
362	>	}});
363	>	await(threadStarted);
364	>	assertEquals(0, p.getCompletedTaskCount());
365	>	threadProceed.countDown();
366	>	threadDone.await();
367	>	long startTime = System.nanoTime();
368	>	while (p.getCompletedTaskCount() != 1) {
369	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
370	>	fail("timed out");
371	>	Thread.yield();
372	>	}
373	>	} finally {
374	>	joinPool(p);
375	>	}
376	>	}
377	>
378	>	/**
379	>	* getCorePoolSize returns size given in constructor if not otherwise set
380	>	*/
381	>	public void testGetCorePoolSize() throws InterruptedException {
382	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
383	>	assertEquals(1, p.getCorePoolSize());
384	>	joinPool(p);
385	>	}
386	>
387	>	/**
388	>	* getLargestPoolSize increases, but doesn't overestimate, when
389	>	* multiple threads active
390	>	*/
391	>	public void testGetLargestPoolSize() throws InterruptedException {
392	>	final int THREADS = 3;
393	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
394	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
395	>	final CountDownLatch done = new CountDownLatch(1);
396	>	try {
397	>	assertEquals(0, p.getLargestPoolSize());
398	>	for (int i = 0; i < THREADS; i++)
399	>	p.execute(new CheckedRunnable() {
400	>	public void realRun() throws InterruptedException {
401	>	threadsStarted.countDown();
402	>	done.await();
403	>	assertEquals(THREADS, p.getLargestPoolSize());
404	>	}});
405	>	assertTrue(threadsStarted.await(SMALL_DELAY_MS, MILLISECONDS));
406	>	assertEquals(THREADS, p.getLargestPoolSize());
407	>	} finally {
408	>	done.countDown();
409	>	joinPool(p);
410	>	assertEquals(THREADS, p.getLargestPoolSize());
411	>	}
412	>	}
413	>
414	>	/**
415	>	* getPoolSize increases, but doesn't overestimate, when threads
416	>	* become active
417	>	*/
418	>	public void testGetPoolSize() throws InterruptedException {
419	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
420	>	final CountDownLatch threadStarted = new CountDownLatch(1);
421	>	final CountDownLatch done = new CountDownLatch(1);
422	>	try {
423	>	assertEquals(0, p.getPoolSize());
424	>	p.execute(new CheckedRunnable() {
425	>	public void realRun() throws InterruptedException {
426	>	threadStarted.countDown();
427	>	assertEquals(1, p.getPoolSize());
428	>	done.await();
429	>	}});
430	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
431	>	assertEquals(1, p.getPoolSize());
432	>	} finally {
433	>	done.countDown();
434	>	joinPool(p);
435	>	}
436	>	}
437	>
438	>	/**
439	>	* getTaskCount increases, but doesn't overestimate, when tasks
440	>	* submitted
441	>	*/
442	>	public void testGetTaskCount() throws InterruptedException {
443	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
444	>	final CountDownLatch threadStarted = new CountDownLatch(1);
445	>	final CountDownLatch done = new CountDownLatch(1);
446	>	final int TASKS = 5;
447	>	try {
448	>	assertEquals(0, p.getTaskCount());
449	>	for (int i = 0; i < TASKS; i++)
450	>	p.execute(new CheckedRunnable() {
451	>	public void realRun() throws InterruptedException {
452	>	threadStarted.countDown();
453	>	done.await();
454	>	}});
455	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
456	>	assertEquals(TASKS, p.getTaskCount());
457	>	} finally {
458	>	done.countDown();
459	>	joinPool(p);
460	>	}
461	>	}
462	>
463	>	/**
464	>	* getThreadFactory returns factory in constructor if not set
465	>	*/
466	>	public void testGetThreadFactory() throws InterruptedException {
467	>	ThreadFactory tf = new SimpleThreadFactory();
468	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1, tf);
469	>	assertSame(tf, p.getThreadFactory());
470	>	joinPool(p);
471	>	}
472	>
473	>	/**
474	>	* setThreadFactory sets the thread factory returned by getThreadFactory
475	>	*/
476	>	public void testSetThreadFactory() throws InterruptedException {
477	>	ThreadFactory tf = new SimpleThreadFactory();
478	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
479	>	p.setThreadFactory(tf);
480	>	assertSame(tf, p.getThreadFactory());
481	>	joinPool(p);
482	>	}
483	>
484	>	/**
485	>	* setThreadFactory(null) throws NPE
486	>	*/
487	>	public void testSetThreadFactoryNull() throws InterruptedException {
488	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
489	>	try {
490	>	p.setThreadFactory(null);
491	>	shouldThrow();
492	>	} catch (NullPointerException success) {
493	>	} finally {
494	>	joinPool(p);
495	>	}
496	>	}
497	>
498	>	/**
499	>	* isShutdown is false before shutdown, true after
500	>	*/
501	>	public void testIsShutdown() {
502	>
503	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
504	>	try {
505	>	assertFalse(p.isShutdown());
506	>	}
507	>	finally {
508	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
509	>	}
510	>	assertTrue(p.isShutdown());
511	>	}
512	>
513	>	/**
514	>	* isTerminated is false before termination, true after
515	>	*/
516	>	public void testIsTerminated() throws InterruptedException {
517	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
518	>	final CountDownLatch threadStarted = new CountDownLatch(1);
519	>	final CountDownLatch done = new CountDownLatch(1);
520	>	assertFalse(p.isTerminated());
521	>	try {
522	>	p.execute(new CheckedRunnable() {
523	>	public void realRun() throws InterruptedException {
524	>	assertFalse(p.isTerminated());
525	>	threadStarted.countDown();
526	>	done.await();
527	>	}});
528	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
529	>	assertFalse(p.isTerminating());
530	>	done.countDown();
531	>	} finally {
532	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
533	>	}
534	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
535	>	assertTrue(p.isTerminated());
536	>	}
537	>
538	>	/**
539	>	* isTerminating is not true when running or when terminated
540	>	*/
541	>	public void testIsTerminating() throws InterruptedException {
542	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
543	>	final CountDownLatch threadStarted = new CountDownLatch(1);
544	>	final CountDownLatch done = new CountDownLatch(1);
545	>	try {
546	>	assertFalse(p.isTerminating());
547	>	p.execute(new CheckedRunnable() {
548	>	public void realRun() throws InterruptedException {
549	>	assertFalse(p.isTerminating());
550	>	threadStarted.countDown();
551	>	done.await();
552	>	}});
553	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
554	>	assertFalse(p.isTerminating());
555	>	done.countDown();
556	>	} finally {
557	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
558	>	}
559	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
560	>	assertTrue(p.isTerminated());
561	>	assertFalse(p.isTerminating());
562	>	}
563	>
564	>	/**
565	>	* getQueue returns the work queue, which contains queued tasks
566	>	*/
567	>	public void testGetQueue() throws InterruptedException {
568	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
569	>	final CountDownLatch threadStarted = new CountDownLatch(1);
570	>	final CountDownLatch done = new CountDownLatch(1);
571	>	try {
572	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
573	>	for (int i = 0; i < tasks.length; i++) {
574	>	Runnable r = new CheckedRunnable() {
575	>	public void realRun() throws InterruptedException {
576	>	threadStarted.countDown();
577	>	done.await();
578	>	}};
579	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
580	>	}
581	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
582	>	BlockingQueue<Runnable> q = p.getQueue();
583	>	assertTrue(q.contains(tasks[tasks.length - 1]));
584	>	assertFalse(q.contains(tasks[0]));
585	>	} finally {
586	>	done.countDown();
587	>	joinPool(p);
588	>	}
589	>	}
590	>
591	>	/**
592	>	* remove(task) removes queued task, and fails to remove active task
593	>	*/
594	>	public void testRemove() throws InterruptedException {
595	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
596	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
597	>	final CountDownLatch threadStarted = new CountDownLatch(1);
598	>	final CountDownLatch done = new CountDownLatch(1);
599	>	try {
600	>	for (int i = 0; i < tasks.length; i++) {
601	>	Runnable r = new CheckedRunnable() {
602	>	public void realRun() throws InterruptedException {
603	>	threadStarted.countDown();
604	>	done.await();
605	>	}};
606	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
607	>	}
608	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
609	>	BlockingQueue<Runnable> q = p.getQueue();
610	>	assertFalse(p.remove((Runnable)tasks[0]));
611	>	assertTrue(q.contains((Runnable)tasks[4]));
612	>	assertTrue(q.contains((Runnable)tasks[3]));
613	>	assertTrue(p.remove((Runnable)tasks[4]));
614	>	assertFalse(p.remove((Runnable)tasks[4]));
615	>	assertFalse(q.contains((Runnable)tasks[4]));
616	>	assertTrue(q.contains((Runnable)tasks[3]));
617	>	assertTrue(p.remove((Runnable)tasks[3]));
618	>	assertFalse(q.contains((Runnable)tasks[3]));
619	>	} finally {
620	>	done.countDown();
621	>	joinPool(p);
622	>	}
623	>	}
624	>
625	>	/**
626	>	* purge eventually removes cancelled tasks from the queue
627	>	*/
628	>	public void testPurge() throws InterruptedException {
629	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
630	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
631	>	for (int i = 0; i < tasks.length; i++)
632	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
633	>	LONG_DELAY_MS, MILLISECONDS);
634	>	try {
635	>	int max = tasks.length;
636	>	if (tasks[4].cancel(true)) --max;
637	>	if (tasks[3].cancel(true)) --max;
638	>	// There must eventually be an interference-free point at
639	>	// which purge will not fail. (At worst, when queue is empty.)
640	>	long startTime = System.nanoTime();
641	>	do {
642	>	p.purge();
643	>	long count = p.getTaskCount();
644	>	if (count == max)
645	>	return;
646	>	} while (millisElapsedSince(startTime) < MEDIUM_DELAY_MS);
647	>	fail("Purge failed to remove cancelled tasks");
648	>	} finally {
649	>	for (ScheduledFuture task : tasks)
650	>	task.cancel(true);
651	>	joinPool(p);
652	>	}
653	>	}
654	>
655	>	/**
656	>	* shutdownNow returns a list containing tasks that were not run,
657	>	* and those tasks are drained from the queue
658	>	*/
659	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
660	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
661	>	List<ScheduledFuture> tasks = new ArrayList<>();
662	>	for (int i = 0; i < 3; i++) {
663	>	Runnable r = new NoOpRunnable();
664	>	tasks.add(p.schedule(r, 9, SECONDS));
665	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
666	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
667	>	}
668	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
669	>	final List<Runnable> queuedTasks;
670	>	try {
671	>	queuedTasks = p.shutdownNow();
672	>	} catch (SecurityException ok) {
673	>	return; // Allowed in case test doesn't have privs
674	>	}
675	>	assertTrue(p.isShutdown());
676	>	assertTrue(p.getQueue().isEmpty());
677	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
678	>	assertEquals(tasks.size(), queuedTasks.size());
679	>	for (ScheduledFuture task : tasks) {
680	>	assertFalse(task.isDone());
681	>	assertFalse(task.isCancelled());
682	>	}
683	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
684	>	assertTrue(p.isTerminated());
685	>	}
686	>
687	>	/**
688	>	* In default setting, shutdown cancels periodic but not delayed
689	>	* tasks at shutdown
690	>	*/
691	>	public void testShutdown1() throws InterruptedException {
692	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
693	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
694	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
695	>
696	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
697	>	for (int i = 0; i < tasks.length; i++)
698	>	tasks[i] = p.schedule(new NoOpRunnable(),
699	>	SHORT_DELAY_MS, MILLISECONDS);
700	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
701	>	BlockingQueue<Runnable> q = p.getQueue();
702	>	for (ScheduledFuture task : tasks) {
703	>	assertFalse(task.isDone());
704	>	assertFalse(task.isCancelled());
705	>	assertTrue(q.contains(task));
706	>	}
707	>	assertTrue(p.isShutdown());
708	>	assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS));
709	>	assertTrue(p.isTerminated());
710	>	for (ScheduledFuture task : tasks) {
711	>	assertTrue(task.isDone());
712	>	assertFalse(task.isCancelled());
713	>	}
714	>	}
715	>
716	>	/**
717	>	* If setExecuteExistingDelayedTasksAfterShutdownPolicy is false,
718	>	* delayed tasks are cancelled at shutdown
719	>	*/
720	>	public void testShutdown2() throws InterruptedException {
721	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
722	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
723	>	assertFalse(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
724	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
725	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
726	>	for (int i = 0; i < tasks.length; i++)
727	>	tasks[i] = p.schedule(new NoOpRunnable(),
728	>	SHORT_DELAY_MS, MILLISECONDS);
729	>	BlockingQueue q = p.getQueue();
730	>	assertEquals(tasks.length, q.size());
731	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
732	>	assertTrue(p.isShutdown());
733	>	assertTrue(q.isEmpty());
734	>	assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS));
735	>	assertTrue(p.isTerminated());
736	>	for (ScheduledFuture task : tasks) {
737	>	assertTrue(task.isDone());
738	>	assertTrue(task.isCancelled());
739	>	}
740	>	}
741	>
742	>	/**
743	>	* If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false,
744	>	* periodic tasks are cancelled at shutdown
745	>	*/
746	>	public void testShutdown3() throws InterruptedException {
747	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
748	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
749	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
750	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
751	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
752	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
753	>	long initialDelay = LONG_DELAY_MS;
754	>	ScheduledFuture task =
755	>	p.scheduleAtFixedRate(new NoOpRunnable(), initialDelay,
756	>	5, MILLISECONDS);
757	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
758	>	assertTrue(p.isShutdown());
759	>	assertTrue(p.getQueue().isEmpty());
760	>	assertTrue(task.isDone());
761	>	assertTrue(task.isCancelled());
762	>	joinPool(p);
763	>	}
764	>
765	>	/**
766	>	* if setContinueExistingPeriodicTasksAfterShutdownPolicy is true,
767	>	* periodic tasks are not cancelled at shutdown
768	>	*/
769	>	public void testShutdown4() throws InterruptedException {
770	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
771	>	final CountDownLatch counter = new CountDownLatch(2);
772	>	try {
773	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
774	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
775	>	assertTrue(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
776	>	final Runnable r = new CheckedRunnable() {
777	>	public void realRun() {
778	>	counter.countDown();
779	>	}};
780	>	ScheduledFuture task =
781	>	p.scheduleAtFixedRate(r, 1, 1, MILLISECONDS);
782	>	assertFalse(task.isDone());
783	>	assertFalse(task.isCancelled());
784	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
785	>	assertFalse(task.isCancelled());
786	>	assertFalse(p.isTerminated());
787	>	assertTrue(p.isShutdown());
788	>	assertTrue(counter.await(SMALL_DELAY_MS, MILLISECONDS));
789	>	assertFalse(task.isCancelled());
790	>	assertTrue(task.cancel(false));
791	>	assertTrue(task.isDone());
792	>	assertTrue(task.isCancelled());
793	>	assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS));
794	>	assertTrue(p.isTerminated());
795	>	}
796	>	finally {
797	>	joinPool(p);
798	>	}
799	>	}
800	>
801	>	/**
802	>	* completed submit of callable returns result
803	>	*/
804	>	public void testSubmitCallable() throws Exception {
805	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
806	>	try {
807	>	Future<String> future = e.submit(new StringTask());
808	>	String result = future.get();
809	>	assertSame(TEST_STRING, result);
810	>	} finally {
811	>	joinPool(e);
812	>	}
813	>	}
814	>
815	>	/**
816	>	* completed submit of runnable returns successfully
817	>	*/
818	>	public void testSubmitRunnable() throws Exception {
819	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
820	>	try {
821	>	Future<?> future = e.submit(new NoOpRunnable());
822	>	future.get();
823	>	assertTrue(future.isDone());
824	>	} finally {
825	>	joinPool(e);
826	>	}
827	>	}
828	>
829	>	/**
830	>	* completed submit of (runnable, result) returns result
831	>	*/
832	>	public void testSubmitRunnable2() throws Exception {
833	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
834	>	try {
835	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
836	>	String result = future.get();
837	>	assertSame(TEST_STRING, result);
838	>	} finally {
839	>	joinPool(e);
840	>	}
841	>	}
842	>
843	>	/**
844	>	* invokeAny(null) throws NPE
845	>	*/
846	>	public void testInvokeAny1() throws Exception {
847	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
848	>	try {
849	>	e.invokeAny(null);
850	>	shouldThrow();
851	>	} catch (NullPointerException success) {
852	>	} finally {
853	>	joinPool(e);
854	>	}
855	>	}
856	>
857	>	/**
858	>	* invokeAny(empty collection) throws IAE
859	>	*/
860	>	public void testInvokeAny2() throws Exception {
861	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
862	>	try {
863	>	e.invokeAny(new ArrayList<Callable<String>>());
864	>	shouldThrow();
865	>	} catch (IllegalArgumentException success) {
866	>	} finally {
867	>	joinPool(e);
868	>	}
869	>	}
870	>
871	>	/**
872	>	* invokeAny(c) throws NPE if c has null elements
873	>	*/
874	>	public void testInvokeAny3() throws Exception {
875	>	CountDownLatch latch = new CountDownLatch(1);
876	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
877	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
878	>	l.add(latchAwaitingStringTask(latch));
879	>	l.add(null);
880	>	try {
881	>	e.invokeAny(l);
882	>	shouldThrow();
883	>	} catch (NullPointerException success) {
884	>	} finally {
885	>	latch.countDown();
886	>	joinPool(e);
887	>	}
888	>	}
889	>
890	>	/**
891	>	* invokeAny(c) throws ExecutionException if no task completes
892	>	*/
893	>	public void testInvokeAny4() throws Exception {
894	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
895	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
896	>	l.add(new NPETask());
897	>	try {
898	>	e.invokeAny(l);
899	>	shouldThrow();
900	>	} catch (ExecutionException success) {
901	>	assertTrue(success.getCause() instanceof NullPointerException);
902	>	} finally {
903	>	joinPool(e);
904	>	}
905	>	}
906	>
907	>	/**
908	>	* invokeAny(c) returns result of some task
909	>	*/
910	>	public void testInvokeAny5() throws Exception {
911	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
912	>	try {
913	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
914	>	l.add(new StringTask());
915	>	l.add(new StringTask());
916	>	String result = e.invokeAny(l);
917	>	assertSame(TEST_STRING, result);
918	>	} finally {
919	>	joinPool(e);
920	>	}
921	>	}
922	>
923	>	/**
924	>	* invokeAll(null) throws NPE
925	>	*/
926	>	public void testInvokeAll1() throws Exception {
927	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
928	>	try {
929	>	e.invokeAll(null);
930	>	shouldThrow();
931	>	} catch (NullPointerException success) {
932	>	} finally {
933	>	joinPool(e);
934	>	}
935	>	}
936	>
937	>	/**
938	>	* invokeAll(empty collection) returns empty collection
939	>	*/
940	>	public void testInvokeAll2() throws Exception {
941	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
942	>	try {
943	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
944	>	assertTrue(r.isEmpty());
945	>	} finally {
946	>	joinPool(e);
947	>	}
948	>	}
949	>
950	>	/**
951	>	* invokeAll(c) throws NPE if c has null elements
952	>	*/
953	>	public void testInvokeAll3() throws Exception {
954	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
955	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
956	>	l.add(new StringTask());
957	>	l.add(null);
958	>	try {
959	>	e.invokeAll(l);
960	>	shouldThrow();
961	>	} catch (NullPointerException success) {
962	>	} finally {
963	>	joinPool(e);
964	>	}
965	>	}
966	>
967	>	/**
968	>	* get of invokeAll(c) throws exception on failed task
969	>	*/
970	>	public void testInvokeAll4() throws Exception {
971	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
972	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
973	>	l.add(new NPETask());
974	>	List<Future<String>> futures = e.invokeAll(l);
975	>	assertEquals(1, futures.size());
976	>	try {
977	>	futures.get(0).get();
978	>	shouldThrow();
979	>	} catch (ExecutionException success) {
980	>	assertTrue(success.getCause() instanceof NullPointerException);
981	>	} finally {
982	>	joinPool(e);
983	>	}
984	>	}
985	>
986	>	/**
987	>	* invokeAll(c) returns results of all completed tasks
988	>	*/
989	>	public void testInvokeAll5() throws Exception {
990	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
991	>	try {
992	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
993	>	l.add(new StringTask());
994	>	l.add(new StringTask());
995	>	List<Future<String>> futures = e.invokeAll(l);
996	>	assertEquals(2, futures.size());
997	>	for (Future<String> future : futures)
998	>	assertSame(TEST_STRING, future.get());
999	>	} finally {
1000	>	joinPool(e);
1001	>	}
1002	>	}
1003	>
1004	>	/**
1005	>	* timed invokeAny(null) throws NPE
1006	>	*/
1007	>	public void testTimedInvokeAny1() throws Exception {
1008	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1009	>	try {
1010	>	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
1011	>	shouldThrow();
1012	>	} catch (NullPointerException success) {
1013	>	} finally {
1014	>	joinPool(e);
1015	>	}
1016	>	}
1017	>
1018	>	/**
1019	>	* timed invokeAny(,,null) throws NPE
1020	>	*/
1021	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1022	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1023	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1024	>	l.add(new StringTask());
1025	>	try {
1026	>	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1027	>	shouldThrow();
1028	>	} catch (NullPointerException success) {
1029	>	} finally {
1030	>	joinPool(e);
1031	>	}
1032	>	}
1033	>
1034	>	/**
1035	>	* timed invokeAny(empty collection) throws IAE
1036	>	*/
1037	>	public void testTimedInvokeAny2() throws Exception {
1038	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1039	>	try {
1040	>	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1041	>	shouldThrow();
1042	>	} catch (IllegalArgumentException success) {
1043	>	} finally {
1044	>	joinPool(e);
1045	>	}
1046	>	}
1047	>
1048	>	/**
1049	>	* timed invokeAny(c) throws NPE if c has null elements
1050	>	*/
1051	>	public void testTimedInvokeAny3() throws Exception {
1052	>	CountDownLatch latch = new CountDownLatch(1);
1053	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1054	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1055	>	l.add(latchAwaitingStringTask(latch));
1056	>	l.add(null);
1057	>	try {
1058	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1059	>	shouldThrow();
1060	>	} catch (NullPointerException success) {
1061	>	} finally {
1062	>	latch.countDown();
1063	>	joinPool(e);
1064	>	}
1065	>	}
1066	>
1067	>	/**
1068	>	* timed invokeAny(c) throws ExecutionException if no task completes
1069	>	*/
1070	>	public void testTimedInvokeAny4() throws Exception {
1071	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1072	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1073	>	l.add(new NPETask());
1074	>	try {
1075	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1076	>	shouldThrow();
1077	>	} catch (ExecutionException success) {
1078	>	assertTrue(success.getCause() instanceof NullPointerException);
1079	>	} finally {
1080	>	joinPool(e);
1081	>	}
1082	>	}
1083	>
1084	>	/**
1085	>	* timed invokeAny(c) returns result of some task
1086	>	*/
1087	>	public void testTimedInvokeAny5() throws Exception {
1088	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1089	>	try {
1090	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1091	>	l.add(new StringTask());
1092	>	l.add(new StringTask());
1093	>	String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1094	>	assertSame(TEST_STRING, result);
1095	>	} finally {
1096	>	joinPool(e);
1097	>	}
1098	>	}
1099	>
1100	>	/**
1101	>	* timed invokeAll(null) throws NPE
1102	>	*/
1103	>	public void testTimedInvokeAll1() throws Exception {
1104	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1105	>	try {
1106	>	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1107	>	shouldThrow();
1108	>	} catch (NullPointerException success) {
1109	>	} finally {
1110	>	joinPool(e);
1111	>	}
1112	>	}
1113	>
1114	>	/**
1115	>	* timed invokeAll(,,null) throws NPE
1116	>	*/
1117	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1118	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1119	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1120	>	l.add(new StringTask());
1121	>	try {
1122	>	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1123	>	shouldThrow();
1124	>	} catch (NullPointerException success) {
1125	>	} finally {
1126	>	joinPool(e);
1127	>	}
1128	>	}
1129	>
1130	>	/**
1131	>	* timed invokeAll(empty collection) returns empty collection
1132	>	*/
1133	>	public void testTimedInvokeAll2() throws Exception {
1134	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1135	>	try {
1136	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1137	>	assertTrue(r.isEmpty());
1138	>	} finally {
1139	>	joinPool(e);
1140	>	}
1141	>	}
1142	>
1143	>	/**
1144	>	* timed invokeAll(c) throws NPE if c has null elements
1145	>	*/
1146	>	public void testTimedInvokeAll3() throws Exception {
1147	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1148	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1149	>	l.add(new StringTask());
1150	>	l.add(null);
1151	>	try {
1152	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1153	>	shouldThrow();
1154	>	} catch (NullPointerException success) {
1155	>	} finally {
1156	>	joinPool(e);
1157	>	}
1158	>	}
1159	>
1160	>	/**
1161	>	* get of element of invokeAll(c) throws exception on failed task
1162	>	*/
1163	>	public void testTimedInvokeAll4() throws Exception {
1164	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1165	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1166	>	l.add(new NPETask());
1167	>	List<Future<String>> futures =
1168	>	e.invokeAll(l, MEDIUM_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	>	} finally {
1176	>	joinPool(e);
1177	>	}
1178	>	}
1179	>
1180	>	/**
1181	>	* timed invokeAll(c) returns results of all completed tasks
1182	>	*/
1183	>	public void testTimedInvokeAll5() throws Exception {
1184	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1185	>	try {
1186	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1187	>	l.add(new StringTask());
1188	>	l.add(new StringTask());
1189	>	List<Future<String>> futures =
1190	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1191	>	assertEquals(2, futures.size());
1192	>	for (Future<String> future : futures)
1193	>	assertSame(TEST_STRING, future.get());
1194	>	} finally {
1195	>	joinPool(e);
1196	>	}
1197	>	}
1198	>
1199	>	/**
1200	>	* timed invokeAll(c) cancels tasks not completed by timeout
1201	>	*/
1202	>	public void testTimedInvokeAll6() throws Exception {
1203	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1204	>	try {
1205	>	for (long timeout = timeoutMillis();;) {
1206	>	List<Callable<String>> tasks = new ArrayList<>();
1207	>	tasks.add(new StringTask("0"));
1208	>	tasks.add(Executors.callable(new LongPossiblyInterruptedRunnable(), TEST_STRING));
1209	>	tasks.add(new StringTask("2"));
1210	>	long startTime = System.nanoTime();
1211	>	List<Future<String>> futures =
1212	>	e.invokeAll(tasks, timeout, MILLISECONDS);
1213	>	assertEquals(tasks.size(), futures.size());
1214	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1215	>	for (Future future : futures)
1216	>	assertTrue(future.isDone());
1217	>	assertTrue(futures.get(1).isCancelled());
1218	>	try {
1219	>	assertEquals("0", futures.get(0).get());
1220	>	assertEquals("2", futures.get(2).get());
1221	>	break;
1222	>	} catch (CancellationException retryWithLongerTimeout) {
1223	>	timeout *= 2;
1224	>	if (timeout >= LONG_DELAY_MS / 2)
1225	>	fail("expected exactly one task to be cancelled");
1226	>	}
1227	>	}
1228	>	} finally {
1229	>	joinPool(e);
1230	>	}
1231		}
1232
1233		}

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