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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 1.49 by jsr166, Wed Sep 25 07:39:17 2013 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	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13	+	import java.util.concurrent.atomic.AtomicInteger;
14
15	<	public class ScheduledExecutorTest extends TestCase{
13	<
14	<	boolean flag = false;
15	<
15	>	public class ScheduledExecutorTest extends JSR166TestCase {
16		public static void main(String[] args) {
17	<	junit.textui.TestRunner.run (suite());
17	>	junit.textui.TestRunner.run(suite());
18		}
19	–
20	–
19		public static Test suite() {
20	<	return new TestSuite(ScheduledExecutorTest.class);
20	>	return new TestSuite(ScheduledExecutorTest.class);
21		}
22
23	<	private static long SHORT_DELAY_MS = 100;
24	<	private static long MEDIUM_DELAY_MS = 1000;
25	<	private static long LONG_DELAY_MS = 10000;
26	<
27	<	static class MyRunnable implements Runnable {
28	<	volatile boolean waiting = true;
29	<	volatile boolean done = false;
30	<	public void run(){
31	<	try{
32	<	Thread.sleep(MEDIUM_DELAY_MS);
33	<	waiting = false;
34	<	done = true;
35	<	} catch(Exception e){}
36	<	}
37	<	}
38	<
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){}
23	>	/**
24	>	* execute successfully executes a runnable
25	>	*/
26	>	public void testExecute() throws InterruptedException {
27	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
28	>	final CountDownLatch done = new CountDownLatch(1);
29	>	final Runnable task = new CheckedRunnable() {
30	>	public void realRun() {
31	>	done.countDown();
32	>	}};
33	>	try {
34	>	p.execute(task);
35	>	assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS));
36	>	} finally {
37	>	joinPool(p);
38	>	}
39		}
40
41		/**
42	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
152	<	*  This occurs on an attempt to schedule a task on a shutdown executor
42	>	* delayed schedule of callable successfully executes after delay
43		*/
44	<	public void testSchedule2_RejectedExecutionException(){
45	<	try{
46	<	ScheduledExecutor se = new ScheduledExecutor(1);
47	<	se.shutdown();
48	<	se.schedule(new Callable(){
49	<	public Object call(){
50	<	return Boolean.TRUE;
51	<	}
52	<	}, (long)100, TimeUnit.SECONDS);
53	<	fail("should throw");
54	<	}catch(RejectedExecutionException e){}
44	>	public void testSchedule1() throws Exception {
45	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
46	>	final long startTime = System.nanoTime();
47	>	final CountDownLatch done = new CountDownLatch(1);
48	>	try {
49	>	Callable task = new CheckedCallable<Boolean>() {
50	>	public Boolean realCall() {
51	>	done.countDown();
52	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
53	>	return Boolean.TRUE;
54	>	}};
55	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
56	>	assertSame(Boolean.TRUE, f.get());
57	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
58	>	assertTrue(done.await(0L, MILLISECONDS));
59	>	} finally {
60	>	joinPool(p);
61	>	}
62		}
63
64		/**
65	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
66	<	*  This occurs on an attempt to schedule a task on a shutdown executor
67	<	*/
68	<	public void testSchedule3_RejectedExecutionException(){
69	<	try{
70	<	ScheduledExecutor se = new ScheduledExecutor(1);
71	<	se.shutdown();
72	<	se.schedule(new Callable(){
73	<	public Object call(){
74	<	return Boolean.TRUE;
75	<	}
76	<	},  10000, TimeUnit.MILLISECONDS);
77	<	fail("should throw");
78	<	}catch(RejectedExecutionException e){}
65	>	* delayed schedule of runnable successfully executes after delay
66	>	*/
67	>	public void testSchedule3() throws Exception {
68	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
69	>	final long startTime = System.nanoTime();
70	>	final CountDownLatch done = new CountDownLatch(1);
71	>	try {
72	>	Runnable task = new CheckedRunnable() {
73	>	public void realRun() {
74	>	done.countDown();
75	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
76	>	}};
77	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
78	>	await(done);
79	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
80	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
81	>	} finally {
82	>	joinPool(p);
83	>	}
84	>	}
85	>
86	>	/**
87	>	* scheduleAtFixedRate executes runnable after given initial delay
88	>	*/
89	>	public void testSchedule4() throws Exception {
90	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
91	>	final long startTime = System.nanoTime();
92	>	final CountDownLatch done = new CountDownLatch(1);
93	>	try {
94	>	Runnable task = new CheckedRunnable() {
95	>	public void realRun() {
96	>	done.countDown();
97	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
98	>	}};
99	>	ScheduledFuture f =
100	>	p.scheduleAtFixedRate(task, timeoutMillis(),
101	>	LONG_DELAY_MS, MILLISECONDS);
102	>	await(done);
103	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
104	>	f.cancel(true);
105	>	} finally {
106	>	joinPool(p);
107	>	}
108	>	}
109	>
110	>	/**
111	>	* scheduleWithFixedDelay executes runnable after given initial delay
112	>	*/
113	>	public void testSchedule5() throws Exception {
114	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
115	>	final long startTime = System.nanoTime();
116	>	final CountDownLatch done = new CountDownLatch(1);
117	>	try {
118	>	Runnable task = new CheckedRunnable() {
119	>	public void realRun() {
120	>	done.countDown();
121	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
122	>	}};
123	>	ScheduledFuture f =
124	>	p.scheduleWithFixedDelay(task, timeoutMillis(),
125	>	LONG_DELAY_MS, MILLISECONDS);
126	>	await(done);
127	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
128	>	f.cancel(true);
129	>	} finally {
130	>	joinPool(p);
131	>	}
132	>	}
133	>
134	>	static class RunnableCounter implements Runnable {
135	>	AtomicInteger count = new AtomicInteger(0);
136	>	public void run() { count.getAndIncrement(); }
137	>	}
138	>
139	>	/**
140	>	* scheduleAtFixedRate executes series of tasks at given rate
141	>	*/
142	>	public void testFixedRateSequence() throws InterruptedException {
143	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
144	>	try {
145	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
146	>	long startTime = System.nanoTime();
147	>	int cycles = 10;
148	>	final CountDownLatch done = new CountDownLatch(cycles);
149	>	Runnable task = new CheckedRunnable() {
150	>	public void realRun() { done.countDown(); }};
151	>	ScheduledFuture h =
152	>	p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
153	>	done.await();
154	>	h.cancel(true);
155	>	double normalizedTime =
156	>	(double) millisElapsedSince(startTime) / delay;
157	>	if (normalizedTime >= cycles - 1 &&
158	>	normalizedTime <= cycles)
159	>	return;
160	>	}
161	>	throw new AssertionError("unexpected execution rate");
162	>	} finally {
163	>	joinPool(p);
164	>	}
165		}
166
167		/**
168	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
169	<	*  RejectedExecutionException.
170	<	*  This occurs on an attempt to schedule a task on a shutdown executor
171	<	*/
172	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
173	<	try{
174	<	ScheduledExecutor se = new ScheduledExecutor(1);
168	>	* scheduleWithFixedDelay executes series of tasks with given period
169	>	*/
170	>	public void testFixedDelaySequence() throws InterruptedException {
171	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
172	>	try {
173	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
174	>	long startTime = System.nanoTime();
175	>	int cycles = 10;
176	>	final CountDownLatch done = new CountDownLatch(cycles);
177	>	Runnable task = new CheckedRunnable() {
178	>	public void realRun() { done.countDown(); }};
179	>	ScheduledFuture h =
180	>	p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
181	>	done.await();
182	>	h.cancel(true);
183	>	double normalizedTime =
184	>	(double) millisElapsedSince(startTime) / delay;
185	>	if (normalizedTime >= cycles - 1 &&
186	>	normalizedTime <= cycles)
187	>	return;
188	>	}
189	>	throw new AssertionError("unexpected execution rate");
190	>	} finally {
191	>	joinPool(p);
192	>	}
193	>	}
194	>
195	>	/**
196	>	* execute(null) throws NPE
197	>	*/
198	>	public void testExecuteNull() throws InterruptedException {
199	>	ScheduledThreadPoolExecutor se = null;
200	>	try {
201	>	se = new ScheduledThreadPoolExecutor(1);
202	>	se.execute(null);
203	>	shouldThrow();
204	>	} catch (NullPointerException success) {}
205	>
206	>	joinPool(se);
207	>	}
208	>
209	>	/**
210	>	* schedule(null) throws NPE
211	>	*/
212	>	public void testScheduleNull() throws InterruptedException {
213	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
214	>	try {
215	>	TrackedCallable callable = null;
216	>	Future f = se.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
217	>	shouldThrow();
218	>	} catch (NullPointerException success) {}
219	>	joinPool(se);
220	>	}
221	>
222	>	/**
223	>	* execute throws RejectedExecutionException if shutdown
224	>	*/
225	>	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
226	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
227	>	try {
228		se.shutdown();
229	<	se.scheduleAtFixedRate(new Runnable(){
230	<	public void run(){}
231	<	}, 100, 100, TimeUnit.SECONDS);
232	<	fail("should throw");
233	<	}catch(RejectedExecutionException e){}
234	<	}
235	<
236	<	/**
237	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
238	<	*  RejectedExecutionException.
239	<	*  This occurs on an attempt to schedule a task on a shutdown executor
240	<	*/
241	<	public void testScheduleAtFixedRate2_RejectedExecutionException(){
242	<	try{
243	<	ScheduledExecutor se = new ScheduledExecutor(1);
229	>	se.schedule(new NoOpRunnable(),
230	>	MEDIUM_DELAY_MS, MILLISECONDS);
231	>	shouldThrow();
232	>	} catch (RejectedExecutionException success) {
233	>	} catch (SecurityException ok) {
234	>	}
235	>
236	>	joinPool(se);
237	>	}
238	>
239	>	/**
240	>	* schedule throws RejectedExecutionException if shutdown
241	>	*/
242	>	public void testSchedule2_RejectedExecutionException() throws InterruptedException {
243	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
244	>	try {
245		se.shutdown();
246	<	se.scheduleAtFixedRate(new Runnable(){
247	<	public void run(){}
248	<	},  1, 100, TimeUnit.SECONDS);
249	<	fail("should throw");
250	<	}catch(RejectedExecutionException e){}
246	>	se.schedule(new NoOpCallable(),
247	>	MEDIUM_DELAY_MS, MILLISECONDS);
248	>	shouldThrow();
249	>	} catch (RejectedExecutionException success) {
250	>	} catch (SecurityException ok) {
251	>	}
252	>	joinPool(se);
253		}
254
255		/**
256	<	*  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
256	>	* schedule callable throws RejectedExecutionException if shutdown
257		*/
258	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
259	<	try{
260	<	ScheduledExecutor se = new ScheduledExecutor(1);
258	>	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
259	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
260	>	try {
261		se.shutdown();
262	<	se.scheduleWithFixedDelay(new Runnable(){
263	<	public void run(){}
264	<	}, 100, 100, TimeUnit.SECONDS);
265	<	fail("should throw");
266	<	}catch(RejectedExecutionException e){}
262	>	se.schedule(new NoOpCallable(),
263	>	MEDIUM_DELAY_MS, MILLISECONDS);
264	>	shouldThrow();
265	>	} catch (RejectedExecutionException success) {
266	>	} catch (SecurityException ok) {
267	>	}
268	>	joinPool(se);
269		}
270
271		/**
272	<	*  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
272	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
273		*/
274	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
275	<	try{
276	<	ScheduledExecutor se = new ScheduledExecutor(1);
274	>	public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
275	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
276	>	try {
277		se.shutdown();
278	<	se.scheduleWithFixedDelay(new Runnable(){
279	<	public void run(){}
280	<	},  1, 100, TimeUnit.SECONDS);
281	<	fail("should throw");
282	<	}catch(RejectedExecutionException e){}
278	>	se.scheduleAtFixedRate(new NoOpRunnable(),
279	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
280	>	shouldThrow();
281	>	} catch (RejectedExecutionException success) {
282	>	} catch (SecurityException ok) {
283	>	}
284	>	joinPool(se);
285		}
286
287		/**
288	<	*  Test to verify execute throws RejectedExecutionException
250	<	*  This occurs on an attempt to schedule a task on a shutdown executor
288	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
289		*/
290	<	public void testExecute_RejectedExecutionException(){
291	<	try{
292	<	ScheduledExecutor se = new ScheduledExecutor(1);
290	>	public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
291	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
292	>	try {
293		se.shutdown();
294	<	se.execute(new Runnable(){
295	<	public void run(){}
296	<	});
297	<	fail("should throw");
298	<	}catch(RejectedExecutionException e){}
294	>	se.scheduleWithFixedDelay(new NoOpRunnable(),
295	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
296	>	shouldThrow();
297	>	} catch (RejectedExecutionException success) {
298	>	} catch (SecurityException ok) {
299	>	}
300	>	joinPool(se);
301	>	}
302	>
303	>	/**
304	>	* getActiveCount increases but doesn't overestimate, when a
305	>	* thread becomes active
306	>	*/
307	>	public void testGetActiveCount() throws InterruptedException {
308	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
309	>	final CountDownLatch threadStarted = new CountDownLatch(1);
310	>	final CountDownLatch done = new CountDownLatch(1);
311	>	try {
312	>	assertEquals(0, p.getActiveCount());
313	>	p.execute(new CheckedRunnable() {
314	>	public void realRun() throws InterruptedException {
315	>	threadStarted.countDown();
316	>	assertEquals(1, p.getActiveCount());
317	>	done.await();
318	>	}});
319	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
320	>	assertEquals(1, p.getActiveCount());
321	>	} finally {
322	>	done.countDown();
323	>	joinPool(p);
324	>	}
325	>	}
326	>
327	>	/**
328	>	* getCompletedTaskCount increases, but doesn't overestimate,
329	>	* when tasks complete
330	>	*/
331	>	public void testGetCompletedTaskCount() throws InterruptedException {
332	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
333	>	final CountDownLatch threadStarted = new CountDownLatch(1);
334	>	final CountDownLatch threadProceed = new CountDownLatch(1);
335	>	final CountDownLatch threadDone = new CountDownLatch(1);
336	>	try {
337	>	assertEquals(0, p.getCompletedTaskCount());
338	>	p.execute(new CheckedRunnable() {
339	>	public void realRun() throws InterruptedException {
340	>	threadStarted.countDown();
341	>	assertEquals(0, p.getCompletedTaskCount());
342	>	threadProceed.await();
343	>	threadDone.countDown();
344	>	}});
345	>	await(threadStarted);
346	>	assertEquals(0, p.getCompletedTaskCount());
347	>	threadProceed.countDown();
348	>	threadDone.await();
349	>	long startTime = System.nanoTime();
350	>	while (p.getCompletedTaskCount() != 1) {
351	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
352	>	fail("timed out");
353	>	Thread.yield();
354	>	}
355	>	} finally {
356	>	joinPool(p);
357	>	}
358	>	}
359	>
360	>	/**
361	>	* getCorePoolSize returns size given in constructor if not otherwise set
362	>	*/
363	>	public void testGetCorePoolSize() throws InterruptedException {
364	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
365	>	assertEquals(1, p.getCorePoolSize());
366	>	joinPool(p);
367	>	}
368	>
369	>	/**
370	>	* getLargestPoolSize increases, but doesn't overestimate, when
371	>	* multiple threads active
372	>	*/
373	>	public void testGetLargestPoolSize() throws InterruptedException {
374	>	final int THREADS = 3;
375	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
376	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
377	>	final CountDownLatch done = new CountDownLatch(1);
378	>	try {
379	>	assertEquals(0, p.getLargestPoolSize());
380	>	for (int i = 0; i < THREADS; i++)
381	>	p.execute(new CheckedRunnable() {
382	>	public void realRun() throws InterruptedException {
383	>	threadsStarted.countDown();
384	>	done.await();
385	>	assertEquals(THREADS, p.getLargestPoolSize());
386	>	}});
387	>	assertTrue(threadsStarted.await(SMALL_DELAY_MS, MILLISECONDS));
388	>	assertEquals(THREADS, p.getLargestPoolSize());
389	>	} finally {
390	>	done.countDown();
391	>	joinPool(p);
392	>	assertEquals(THREADS, p.getLargestPoolSize());
393	>	}
394	>	}
395	>
396	>	/**
397	>	* getPoolSize increases, but doesn't overestimate, when threads
398	>	* become active
399	>	*/
400	>	public void testGetPoolSize() throws InterruptedException {
401	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
402	>	final CountDownLatch threadStarted = new CountDownLatch(1);
403	>	final CountDownLatch done = new CountDownLatch(1);
404	>	try {
405	>	assertEquals(0, p.getPoolSize());
406	>	p.execute(new CheckedRunnable() {
407	>	public void realRun() throws InterruptedException {
408	>	threadStarted.countDown();
409	>	assertEquals(1, p.getPoolSize());
410	>	done.await();
411	>	}});
412	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
413	>	assertEquals(1, p.getPoolSize());
414	>	} finally {
415	>	done.countDown();
416	>	joinPool(p);
417	>	}
418	>	}
419	>
420	>	/**
421	>	* getTaskCount increases, but doesn't overestimate, when tasks
422	>	* submitted
423	>	*/
424	>	public void testGetTaskCount() throws InterruptedException {
425	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
426	>	final CountDownLatch threadStarted = new CountDownLatch(1);
427	>	final CountDownLatch done = new CountDownLatch(1);
428	>	final int TASKS = 5;
429	>	try {
430	>	assertEquals(0, p.getTaskCount());
431	>	for (int i = 0; i < TASKS; i++)
432	>	p.execute(new CheckedRunnable() {
433	>	public void realRun() throws InterruptedException {
434	>	threadStarted.countDown();
435	>	done.await();
436	>	}});
437	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
438	>	assertEquals(TASKS, p.getTaskCount());
439	>	} finally {
440	>	done.countDown();
441	>	joinPool(p);
442	>	}
443	>	}
444	>
445	>	/**
446	>	* getThreadFactory returns factory in constructor if not set
447	>	*/
448	>	public void testGetThreadFactory() throws InterruptedException {
449	>	ThreadFactory tf = new SimpleThreadFactory();
450	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1, tf);
451	>	assertSame(tf, p.getThreadFactory());
452	>	joinPool(p);
453	>	}
454	>
455	>	/**
456	>	* setThreadFactory sets the thread factory returned by getThreadFactory
457	>	*/
458	>	public void testSetThreadFactory() throws InterruptedException {
459	>	ThreadFactory tf = new SimpleThreadFactory();
460	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
461	>	p.setThreadFactory(tf);
462	>	assertSame(tf, p.getThreadFactory());
463	>	joinPool(p);
464	>	}
465	>
466	>	/**
467	>	* setThreadFactory(null) throws NPE
468	>	*/
469	>	public void testSetThreadFactoryNull() throws InterruptedException {
470	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
471	>	try {
472	>	p.setThreadFactory(null);
473	>	shouldThrow();
474	>	} catch (NullPointerException success) {
475	>	} finally {
476	>	joinPool(p);
477	>	}
478	>	}
479	>
480	>	/**
481	>	* isShutdown is false before shutdown, true after
482	>	*/
483	>	public void testIsShutdown() {
484	>
485	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
486	>	try {
487	>	assertFalse(p.isShutdown());
488	>	}
489	>	finally {
490	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
491	>	}
492	>	assertTrue(p.isShutdown());
493	>	}
494	>
495	>	/**
496	>	* isTerminated is false before termination, true after
497	>	*/
498	>	public void testIsTerminated() throws InterruptedException {
499	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
500	>	final CountDownLatch threadStarted = new CountDownLatch(1);
501	>	final CountDownLatch done = new CountDownLatch(1);
502	>	assertFalse(p.isTerminated());
503	>	try {
504	>	p.execute(new CheckedRunnable() {
505	>	public void realRun() throws InterruptedException {
506	>	assertFalse(p.isTerminated());
507	>	threadStarted.countDown();
508	>	done.await();
509	>	}});
510	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
511	>	assertFalse(p.isTerminating());
512	>	done.countDown();
513	>	} finally {
514	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
515	>	}
516	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
517	>	assertTrue(p.isTerminated());
518	>	}
519	>
520	>	/**
521	>	* isTerminating is not true when running or when terminated
522	>	*/
523	>	public void testIsTerminating() throws InterruptedException {
524	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
525	>	final CountDownLatch threadStarted = new CountDownLatch(1);
526	>	final CountDownLatch done = new CountDownLatch(1);
527	>	try {
528	>	assertFalse(p.isTerminating());
529	>	p.execute(new CheckedRunnable() {
530	>	public void realRun() throws InterruptedException {
531	>	assertFalse(p.isTerminating());
532	>	threadStarted.countDown();
533	>	done.await();
534	>	}});
535	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
536	>	assertFalse(p.isTerminating());
537	>	done.countDown();
538	>	} finally {
539	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
540	>	}
541	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
542	>	assertTrue(p.isTerminated());
543	>	assertFalse(p.isTerminating());
544	>	}
545	>
546	>	/**
547	>	* getQueue returns the work queue, which contains queued tasks
548	>	*/
549	>	public void testGetQueue() throws InterruptedException {
550	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
551	>	final CountDownLatch threadStarted = new CountDownLatch(1);
552	>	final CountDownLatch done = new CountDownLatch(1);
553	>	try {
554	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
555	>	for (int i = 0; i < tasks.length; i++) {
556	>	Runnable r = new CheckedRunnable() {
557	>	public void realRun() throws InterruptedException {
558	>	threadStarted.countDown();
559	>	done.await();
560	>	}};
561	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
562	>	}
563	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
564	>	BlockingQueue<Runnable> q = p.getQueue();
565	>	assertTrue(q.contains(tasks[tasks.length - 1]));
566	>	assertFalse(q.contains(tasks[0]));
567	>	} finally {
568	>	done.countDown();
569	>	joinPool(p);
570	>	}
571	>	}
572	>
573	>	/**
574	>	* remove(task) removes queued task, and fails to remove active task
575	>	*/
576	>	public void testRemove() throws InterruptedException {
577	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
578	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
579	>	final CountDownLatch threadStarted = new CountDownLatch(1);
580	>	final CountDownLatch done = new CountDownLatch(1);
581	>	try {
582	>	for (int i = 0; i < tasks.length; i++) {
583	>	Runnable r = new CheckedRunnable() {
584	>	public void realRun() throws InterruptedException {
585	>	threadStarted.countDown();
586	>	done.await();
587	>	}};
588	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
589	>	}
590	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
591	>	BlockingQueue<Runnable> q = p.getQueue();
592	>	assertFalse(p.remove((Runnable)tasks[0]));
593	>	assertTrue(q.contains((Runnable)tasks[4]));
594	>	assertTrue(q.contains((Runnable)tasks[3]));
595	>	assertTrue(p.remove((Runnable)tasks[4]));
596	>	assertFalse(p.remove((Runnable)tasks[4]));
597	>	assertFalse(q.contains((Runnable)tasks[4]));
598	>	assertTrue(q.contains((Runnable)tasks[3]));
599	>	assertTrue(p.remove((Runnable)tasks[3]));
600	>	assertFalse(q.contains((Runnable)tasks[3]));
601	>	} finally {
602	>	done.countDown();
603	>	joinPool(p);
604	>	}
605	>	}
606	>
607	>	/**
608	>	* purge eventually removes cancelled tasks from the queue
609	>	*/
610	>	public void testPurge() throws InterruptedException {
611	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
612	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
613	>	for (int i = 0; i < tasks.length; i++)
614	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
615	>	LONG_DELAY_MS, MILLISECONDS);
616	>	try {
617	>	int max = tasks.length;
618	>	if (tasks[4].cancel(true)) --max;
619	>	if (tasks[3].cancel(true)) --max;
620	>	// There must eventually be an interference-free point at
621	>	// which purge will not fail. (At worst, when queue is empty.)
622	>	long startTime = System.nanoTime();
623	>	do {
624	>	p.purge();
625	>	long count = p.getTaskCount();
626	>	if (count == max)
627	>	return;
628	>	} while (millisElapsedSince(startTime) < MEDIUM_DELAY_MS);
629	>	fail("Purge failed to remove cancelled tasks");
630	>	} finally {
631	>	for (ScheduledFuture task : tasks)
632	>	task.cancel(true);
633	>	joinPool(p);
634	>	}
635	>	}
636	>
637	>	/**
638	>	* shutdownNow returns a list containing tasks that were not run
639	>	*/
640	>	public void testShutdownNow() {
641	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
642	>	for (int i = 0; i < 5; i++)
643	>	p.schedule(new SmallPossiblyInterruptedRunnable(),
644	>	LONG_DELAY_MS, MILLISECONDS);
645	>	try {
646	>	List<Runnable> l = p.shutdownNow();
647	>	assertTrue(p.isShutdown());
648	>	assertEquals(5, l.size());
649	>	} catch (SecurityException ok) {
650	>	// Allowed in case test doesn't have privs
651	>	} finally {
652	>	joinPool(p);
653	>	}
654	>	}
655	>
656	>	/**
657	>	* In default setting, shutdown cancels periodic but not delayed
658	>	* tasks at shutdown
659	>	*/
660	>	public void testShutdown1() throws InterruptedException {
661	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
662	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
663	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
664	>
665	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
666	>	for (int i = 0; i < tasks.length; i++)
667	>	tasks[i] = p.schedule(new NoOpRunnable(),
668	>	SHORT_DELAY_MS, MILLISECONDS);
669	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
670	>	BlockingQueue<Runnable> q = p.getQueue();
671	>	for (ScheduledFuture task : tasks) {
672	>	assertFalse(task.isDone());
673	>	assertFalse(task.isCancelled());
674	>	assertTrue(q.contains(task));
675	>	}
676	>	assertTrue(p.isShutdown());
677	>	assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS));
678	>	assertTrue(p.isTerminated());
679	>	for (ScheduledFuture task : tasks) {
680	>	assertTrue(task.isDone());
681	>	assertFalse(task.isCancelled());
682	>	}
683	>	}
684	>
685	>	/**
686	>	* If setExecuteExistingDelayedTasksAfterShutdownPolicy is false,
687	>	* delayed tasks are cancelled at shutdown
688	>	*/
689	>	public void testShutdown2() throws InterruptedException {
690	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
691	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
692	>	assertFalse(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
693	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
694	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
695	>	for (int i = 0; i < tasks.length; i++)
696	>	tasks[i] = p.schedule(new NoOpRunnable(),
697	>	SHORT_DELAY_MS, MILLISECONDS);
698	>	BlockingQueue q = p.getQueue();
699	>	assertEquals(tasks.length, q.size());
700	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
701	>	assertTrue(p.isShutdown());
702	>	assertTrue(q.isEmpty());
703	>	assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS));
704	>	assertTrue(p.isTerminated());
705	>	for (ScheduledFuture task : tasks) {
706	>	assertTrue(task.isDone());
707	>	assertTrue(task.isCancelled());
708	>	}
709	>	}
710	>
711	>	/**
712	>	* If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false,
713	>	* periodic tasks are cancelled at shutdown
714	>	*/
715	>	public void testShutdown3() throws InterruptedException {
716	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
717	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
718	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
719	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
720	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
721	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
722	>	long initialDelay = LONG_DELAY_MS;
723	>	ScheduledFuture task =
724	>	p.scheduleAtFixedRate(new NoOpRunnable(), initialDelay,
725	>	5, MILLISECONDS);
726	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
727	>	assertTrue(p.isShutdown());
728	>	assertTrue(p.getQueue().isEmpty());
729	>	assertTrue(task.isDone());
730	>	assertTrue(task.isCancelled());
731	>	joinPool(p);
732	>	}
733	>
734	>	/**
735	>	* if setContinueExistingPeriodicTasksAfterShutdownPolicy is true,
736	>	* periodic tasks are not cancelled at shutdown
737	>	*/
738	>	public void testShutdown4() throws InterruptedException {
739	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
740	>	final CountDownLatch counter = new CountDownLatch(2);
741	>	try {
742	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
743	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
744	>	assertTrue(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
745	>	final Runnable r = new CheckedRunnable() {
746	>	public void realRun() {
747	>	counter.countDown();
748	>	}};
749	>	ScheduledFuture task =
750	>	p.scheduleAtFixedRate(r, 1, 1, MILLISECONDS);
751	>	assertFalse(task.isDone());
752	>	assertFalse(task.isCancelled());
753	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
754	>	assertFalse(task.isCancelled());
755	>	assertFalse(p.isTerminated());
756	>	assertTrue(p.isShutdown());
757	>	assertTrue(counter.await(SMALL_DELAY_MS, MILLISECONDS));
758	>	assertFalse(task.isCancelled());
759	>	assertTrue(task.cancel(false));
760	>	assertTrue(task.isDone());
761	>	assertTrue(task.isCancelled());
762	>	assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS));
763	>	assertTrue(p.isTerminated());
764	>	}
765	>	finally {
766	>	joinPool(p);
767	>	}
768	>	}
769	>
770	>	/**
771	>	* completed submit of callable returns result
772	>	*/
773	>	public void testSubmitCallable() throws Exception {
774	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
775	>	try {
776	>	Future<String> future = e.submit(new StringTask());
777	>	String result = future.get();
778	>	assertSame(TEST_STRING, result);
779	>	} finally {
780	>	joinPool(e);
781	>	}
782	>	}
783	>
784	>	/**
785	>	* completed submit of runnable returns successfully
786	>	*/
787	>	public void testSubmitRunnable() throws Exception {
788	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
789	>	try {
790	>	Future<?> future = e.submit(new NoOpRunnable());
791	>	future.get();
792	>	assertTrue(future.isDone());
793	>	} finally {
794	>	joinPool(e);
795	>	}
796	>	}
797	>
798	>	/**
799	>	* completed submit of (runnable, result) returns result
800	>	*/
801	>	public void testSubmitRunnable2() throws Exception {
802	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
803	>	try {
804	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
805	>	String result = future.get();
806	>	assertSame(TEST_STRING, result);
807	>	} finally {
808	>	joinPool(e);
809	>	}
810	>	}
811	>
812	>	/**
813	>	* invokeAny(null) throws NPE
814	>	*/
815	>	public void testInvokeAny1() throws Exception {
816	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
817	>	try {
818	>	e.invokeAny(null);
819	>	shouldThrow();
820	>	} catch (NullPointerException success) {
821	>	} finally {
822	>	joinPool(e);
823	>	}
824	>	}
825	>
826	>	/**
827	>	* invokeAny(empty collection) throws IAE
828	>	*/
829	>	public void testInvokeAny2() throws Exception {
830	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
831	>	try {
832	>	e.invokeAny(new ArrayList<Callable<String>>());
833	>	shouldThrow();
834	>	} catch (IllegalArgumentException success) {
835	>	} finally {
836	>	joinPool(e);
837	>	}
838	>	}
839	>
840	>	/**
841	>	* invokeAny(c) throws NPE if c has null elements
842	>	*/
843	>	public void testInvokeAny3() throws Exception {
844	>	CountDownLatch latch = new CountDownLatch(1);
845	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
846	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
847	>	l.add(latchAwaitingStringTask(latch));
848	>	l.add(null);
849	>	try {
850	>	e.invokeAny(l);
851	>	shouldThrow();
852	>	} catch (NullPointerException success) {
853	>	} finally {
854	>	latch.countDown();
855	>	joinPool(e);
856	>	}
857	>	}
858	>
859	>	/**
860	>	* invokeAny(c) throws ExecutionException if no task completes
861	>	*/
862	>	public void testInvokeAny4() throws Exception {
863	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
864	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
865	>	l.add(new NPETask());
866	>	try {
867	>	e.invokeAny(l);
868	>	shouldThrow();
869	>	} catch (ExecutionException success) {
870	>	assertTrue(success.getCause() instanceof NullPointerException);
871	>	} finally {
872	>	joinPool(e);
873	>	}
874	>	}
875	>
876	>	/**
877	>	* invokeAny(c) returns result of some task
878	>	*/
879	>	public void testInvokeAny5() throws Exception {
880	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
881	>	try {
882	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
883	>	l.add(new StringTask());
884	>	l.add(new StringTask());
885	>	String result = e.invokeAny(l);
886	>	assertSame(TEST_STRING, result);
887	>	} finally {
888	>	joinPool(e);
889	>	}
890	>	}
891	>
892	>	/**
893	>	* invokeAll(null) throws NPE
894	>	*/
895	>	public void testInvokeAll1() throws Exception {
896	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
897	>	try {
898	>	e.invokeAll(null);
899	>	shouldThrow();
900	>	} catch (NullPointerException success) {
901	>	} finally {
902	>	joinPool(e);
903	>	}
904	>	}
905	>
906	>	/**
907	>	* invokeAll(empty collection) returns empty collection
908	>	*/
909	>	public void testInvokeAll2() throws Exception {
910	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
911	>	try {
912	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
913	>	assertTrue(r.isEmpty());
914	>	} finally {
915	>	joinPool(e);
916	>	}
917	>	}
918	>
919	>	/**
920	>	* invokeAll(c) throws NPE if c has null elements
921	>	*/
922	>	public void testInvokeAll3() throws Exception {
923	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
924	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
925	>	l.add(new StringTask());
926	>	l.add(null);
927	>	try {
928	>	e.invokeAll(l);
929	>	shouldThrow();
930	>	} catch (NullPointerException success) {
931	>	} finally {
932	>	joinPool(e);
933	>	}
934	>	}
935	>
936	>	/**
937	>	* get of invokeAll(c) throws exception on failed task
938	>	*/
939	>	public void testInvokeAll4() throws Exception {
940	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
941	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
942	>	l.add(new NPETask());
943	>	List<Future<String>> futures = e.invokeAll(l);
944	>	assertEquals(1, futures.size());
945	>	try {
946	>	futures.get(0).get();
947	>	shouldThrow();
948	>	} catch (ExecutionException success) {
949	>	assertTrue(success.getCause() instanceof NullPointerException);
950	>	} finally {
951	>	joinPool(e);
952	>	}
953	>	}
954	>
955	>	/**
956	>	* invokeAll(c) returns results of all completed tasks
957	>	*/
958	>	public void testInvokeAll5() throws Exception {
959	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
960	>	try {
961	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
962	>	l.add(new StringTask());
963	>	l.add(new StringTask());
964	>	List<Future<String>> futures = e.invokeAll(l);
965	>	assertEquals(2, futures.size());
966	>	for (Future<String> future : futures)
967	>	assertSame(TEST_STRING, future.get());
968	>	} finally {
969	>	joinPool(e);
970	>	}
971	>	}
972	>
973	>	/**
974	>	* timed invokeAny(null) throws NPE
975	>	*/
976	>	public void testTimedInvokeAny1() throws Exception {
977	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
978	>	try {
979	>	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
980	>	shouldThrow();
981	>	} catch (NullPointerException success) {
982	>	} finally {
983	>	joinPool(e);
984	>	}
985	>	}
986	>
987	>	/**
988	>	* timed invokeAny(,,null) throws NPE
989	>	*/
990	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
991	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
992	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
993	>	l.add(new StringTask());
994	>	try {
995	>	e.invokeAny(l, MEDIUM_DELAY_MS, null);
996	>	shouldThrow();
997	>	} catch (NullPointerException success) {
998	>	} finally {
999	>	joinPool(e);
1000	>	}
1001	>	}
1002	>
1003	>	/**
1004	>	* timed invokeAny(empty collection) throws IAE
1005	>	*/
1006	>	public void testTimedInvokeAny2() throws Exception {
1007	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1008	>	try {
1009	>	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1010	>	shouldThrow();
1011	>	} catch (IllegalArgumentException success) {
1012	>	} finally {
1013	>	joinPool(e);
1014	>	}
1015	>	}
1016	>
1017	>	/**
1018	>	* timed invokeAny(c) throws NPE if c has null elements
1019	>	*/
1020	>	public void testTimedInvokeAny3() throws Exception {
1021	>	CountDownLatch latch = new CountDownLatch(1);
1022	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1023	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1024	>	l.add(latchAwaitingStringTask(latch));
1025	>	l.add(null);
1026	>	try {
1027	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1028	>	shouldThrow();
1029	>	} catch (NullPointerException success) {
1030	>	} finally {
1031	>	latch.countDown();
1032	>	joinPool(e);
1033	>	}
1034	>	}
1035	>
1036	>	/**
1037	>	* timed invokeAny(c) throws ExecutionException if no task completes
1038	>	*/
1039	>	public void testTimedInvokeAny4() throws Exception {
1040	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1041	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1042	>	l.add(new NPETask());
1043	>	try {
1044	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1045	>	shouldThrow();
1046	>	} catch (ExecutionException success) {
1047	>	assertTrue(success.getCause() instanceof NullPointerException);
1048	>	} finally {
1049	>	joinPool(e);
1050	>	}
1051	>	}
1052	>
1053	>	/**
1054	>	* timed invokeAny(c) returns result of some task
1055	>	*/
1056	>	public void testTimedInvokeAny5() throws Exception {
1057	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1058	>	try {
1059	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1060	>	l.add(new StringTask());
1061	>	l.add(new StringTask());
1062	>	String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1063	>	assertSame(TEST_STRING, result);
1064	>	} finally {
1065	>	joinPool(e);
1066	>	}
1067	>	}
1068	>
1069	>	/**
1070	>	* timed invokeAll(null) throws NPE
1071	>	*/
1072	>	public void testTimedInvokeAll1() throws Exception {
1073	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1074	>	try {
1075	>	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1076	>	shouldThrow();
1077	>	} catch (NullPointerException success) {
1078	>	} finally {
1079	>	joinPool(e);
1080	>	}
1081	>	}
1082	>
1083	>	/**
1084	>	* timed invokeAll(,,null) throws NPE
1085	>	*/
1086	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1087	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1088	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1089	>	l.add(new StringTask());
1090	>	try {
1091	>	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1092	>	shouldThrow();
1093	>	} catch (NullPointerException success) {
1094	>	} finally {
1095	>	joinPool(e);
1096	>	}
1097	>	}
1098	>
1099	>	/**
1100	>	* timed invokeAll(empty collection) returns empty collection
1101	>	*/
1102	>	public void testTimedInvokeAll2() throws Exception {
1103	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1104	>	try {
1105	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1106	>	assertTrue(r.isEmpty());
1107	>	} finally {
1108	>	joinPool(e);
1109	>	}
1110	>	}
1111	>
1112	>	/**
1113	>	* timed invokeAll(c) throws NPE if c has null elements
1114	>	*/
1115	>	public void testTimedInvokeAll3() throws Exception {
1116	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1117	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1118	>	l.add(new StringTask());
1119	>	l.add(null);
1120	>	try {
1121	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1122	>	shouldThrow();
1123	>	} catch (NullPointerException success) {
1124	>	} finally {
1125	>	joinPool(e);
1126	>	}
1127	>	}
1128	>
1129	>	/**
1130	>	* get of element of invokeAll(c) throws exception on failed task
1131	>	*/
1132	>	public void testTimedInvokeAll4() throws Exception {
1133	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1134	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1135	>	l.add(new NPETask());
1136	>	List<Future<String>> futures =
1137	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1138	>	assertEquals(1, futures.size());
1139	>	try {
1140	>	futures.get(0).get();
1141	>	shouldThrow();
1142	>	} catch (ExecutionException success) {
1143	>	assertTrue(success.getCause() instanceof NullPointerException);
1144	>	} finally {
1145	>	joinPool(e);
1146	>	}
1147	>	}
1148	>
1149	>	/**
1150	>	* timed invokeAll(c) returns results of all completed tasks
1151	>	*/
1152	>	public void testTimedInvokeAll5() throws Exception {
1153	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1154	>	try {
1155	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1156	>	l.add(new StringTask());
1157	>	l.add(new StringTask());
1158	>	List<Future<String>> futures =
1159	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1160	>	assertEquals(2, futures.size());
1161	>	for (Future<String> future : futures)
1162	>	assertSame(TEST_STRING, future.get());
1163	>	} finally {
1164	>	joinPool(e);
1165	>	}
1166	>	}
1167	>
1168	>	/**
1169	>	* timed invokeAll(c) cancels tasks not completed by timeout
1170	>	*/
1171	>	public void testTimedInvokeAll6() throws Exception {
1172	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1173	>	try {
1174	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1175	>	l.add(new StringTask());
1176	>	l.add(Executors.callable(new MediumPossiblyInterruptedRunnable(), TEST_STRING));
1177	>	l.add(new StringTask());
1178	>	List<Future<String>> futures =
1179	>	e.invokeAll(l, SHORT_DELAY_MS, MILLISECONDS);
1180	>	assertEquals(l.size(), futures.size());
1181	>	for (Future future : futures)
1182	>	assertTrue(future.isDone());
1183	>	assertFalse(futures.get(0).isCancelled());
1184	>	assertTrue(futures.get(1).isCancelled());
1185	>	} finally {
1186	>	joinPool(e);
1187	>	}
1188		}
1189
1190		}

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