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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 1.43 by jsr166, Fri May 27 19:48:58 2011 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.*;
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 t0 = System.nanoTime();
47	>	final long timeoutNanos = SHORT_DELAY_MS * 1000L * 1000L;
48	>	final CountDownLatch done = new CountDownLatch(1);
49	>	try {
50	>	Callable task = new CheckedCallable<Boolean>() {
51	>	public Boolean realCall() {
52	>	done.countDown();
53	>	assertTrue(System.nanoTime() - t0 >= timeoutNanos);
54	>	return Boolean.TRUE;
55	>	}};
56	>	Future f = p.schedule(task, SHORT_DELAY_MS, MILLISECONDS);
57	>	assertEquals(Boolean.TRUE, f.get());
58	>	assertTrue(System.nanoTime() - t0 >= timeoutNanos);
59	>	assertTrue(done.await(0L, MILLISECONDS));
60	>	} finally {
61	>	joinPool(p);
62	>	}
63		}
64
65		/**
66	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
67	<	*  This occurs on an attempt to schedule a task on a shutdown executor
68	<	*/
69	<	public void testSchedule3_RejectedExecutionException(){
70	<	try{
71	<	ScheduledExecutor se = new ScheduledExecutor(1);
72	<	se.shutdown();
73	<	se.schedule(new Callable(){
74	<	public Object call(){
75	<	return Boolean.TRUE;
76	<	}
77	<	},  10000, TimeUnit.MILLISECONDS);
78	<	fail("should throw");
79	<	}catch(RejectedExecutionException e){}
66	>	* delayed schedule of runnable successfully executes after delay
67	>	*/
68	>	public void testSchedule3() throws Exception {
69	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
70	>	final long t0 = System.nanoTime();
71	>	final long timeoutNanos = SHORT_DELAY_MS * 1000L * 1000L;
72	>	final CountDownLatch done = new CountDownLatch(1);
73	>	try {
74	>	Runnable task = new CheckedRunnable() {
75	>	public void realRun() {
76	>	done.countDown();
77	>	assertTrue(System.nanoTime() - t0 >= timeoutNanos);
78	>	}};
79	>	Future f = p.schedule(task, SHORT_DELAY_MS, MILLISECONDS);
80	>	assertNull(f.get());
81	>	assertTrue(System.nanoTime() - t0 >= timeoutNanos);
82	>	assertTrue(done.await(0L, MILLISECONDS));
83	>	} finally {
84	>	joinPool(p);
85	>	}
86	>	}
87	>
88	>	/**
89	>	* scheduleAtFixedRate executes runnable after given initial delay
90	>	*/
91	>	public void testSchedule4() throws Exception {
92	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
93	>	final long t0 = System.nanoTime();
94	>	final long timeoutNanos = SHORT_DELAY_MS * 1000L * 1000L;
95	>	final CountDownLatch done = new CountDownLatch(1);
96	>	try {
97	>	Runnable task = new CheckedRunnable() {
98	>	public void realRun() {
99	>	done.countDown();
100	>	assertTrue(System.nanoTime() - t0 >= timeoutNanos);
101	>	}};
102	>	ScheduledFuture f =
103	>	p.scheduleAtFixedRate(task, SHORT_DELAY_MS,
104	>	SHORT_DELAY_MS, MILLISECONDS);
105	>	assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS));
106	>	assertTrue(System.nanoTime() - t0 >= timeoutNanos);
107	>	f.cancel(true);
108	>	} finally {
109	>	joinPool(p);
110	>	}
111	>	}
112	>
113	>	/**
114	>	* scheduleWithFixedDelay executes runnable after given initial delay
115	>	*/
116	>	public void testSchedule5() throws InterruptedException {
117	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
118	>	final long t0 = System.nanoTime();
119	>	final long timeoutNanos = SHORT_DELAY_MS * 1000L * 1000L;
120	>	final CountDownLatch done = new CountDownLatch(1);
121	>	try {
122	>	Runnable task = new CheckedRunnable() {
123	>	public void realRun() {
124	>	done.countDown();
125	>	assertTrue(System.nanoTime() - t0 >= timeoutNanos);
126	>	}};
127	>	ScheduledFuture f =
128	>	p.scheduleWithFixedDelay(task, SHORT_DELAY_MS,
129	>	SHORT_DELAY_MS, MILLISECONDS);
130	>	assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS));
131	>	assertTrue(System.nanoTime() - t0 >= timeoutNanos);
132	>	f.cancel(true);
133	>	} finally {
134	>	joinPool(p);
135	>	}
136	>	}
137	>
138	>	static class RunnableCounter implements Runnable {
139	>	AtomicInteger count = new AtomicInteger(0);
140	>	public void run() { count.getAndIncrement(); }
141	>	}
142	>
143	>	/**
144	>	* scheduleAtFixedRate executes series of tasks at given rate
145	>	*/
146	>	public void testFixedRateSequence() throws InterruptedException {
147	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
148	>	RunnableCounter counter = new RunnableCounter();
149	>	ScheduledFuture h =
150	>	p.scheduleAtFixedRate(counter, 0, 1, MILLISECONDS);
151	>	delay(SMALL_DELAY_MS);
152	>	h.cancel(true);
153	>	int c = counter.count.get();
154	>	// By time scaling conventions, we must have at least
155	>	// an execution per SHORT delay, but no more than one SHORT more
156	>	assertTrue(c >= SMALL_DELAY_MS / SHORT_DELAY_MS);
157	>	assertTrue(c <= SMALL_DELAY_MS + SHORT_DELAY_MS);
158	>	joinPool(p);
159	>	}
160	>
161	>	/**
162	>	* scheduleWithFixedDelay executes series of tasks with given period
163	>	*/
164	>	public void testFixedDelaySequence() throws InterruptedException {
165	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
166	>	RunnableCounter counter = new RunnableCounter();
167	>	ScheduledFuture h =
168	>	p.scheduleWithFixedDelay(counter, 0, 1, MILLISECONDS);
169	>	delay(SMALL_DELAY_MS);
170	>	h.cancel(true);
171	>	int c = counter.count.get();
172	>	assertTrue(c >= SMALL_DELAY_MS / SHORT_DELAY_MS);
173	>	assertTrue(c <= SMALL_DELAY_MS + SHORT_DELAY_MS);
174	>	joinPool(p);
175	>	}
176	>
177	>	/**
178	>	* execute(null) throws NPE
179	>	*/
180	>	public void testExecuteNull() throws InterruptedException {
181	>	ScheduledThreadPoolExecutor se = null;
182	>	try {
183	>	se = new ScheduledThreadPoolExecutor(1);
184	>	se.execute(null);
185	>	shouldThrow();
186	>	} catch (NullPointerException success) {}
187	>
188	>	joinPool(se);
189		}
190
191		/**
192	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
193	<	*  RejectedExecutionException.
194	<	*  This occurs on an attempt to schedule a task on a shutdown executor
195	<	*/
196	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
197	<	try{
198	<	ScheduledExecutor se = new ScheduledExecutor(1);
192	>	* schedule(null) throws NPE
193	>	*/
194	>	public void testScheduleNull() throws InterruptedException {
195	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
196	>	try {
197	>	TrackedCallable callable = null;
198	>	Future f = se.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
199	>	shouldThrow();
200	>	} catch (NullPointerException success) {}
201	>	joinPool(se);
202	>	}
203	>
204	>	/**
205	>	* execute throws RejectedExecutionException if shutdown
206	>	*/
207	>	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
208	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
209	>	try {
210		se.shutdown();
211	<	se.scheduleAtFixedRate(new Runnable(){
212	<	public void run(){}
213	<	}, 100, 100, TimeUnit.SECONDS);
214	<	fail("should throw");
215	<	}catch(RejectedExecutionException e){}
216	<	}
217	<
218	<	/**
219	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
220	<	*  RejectedExecutionException.
221	<	*  This occurs on an attempt to schedule a task on a shutdown executor
222	<	*/
223	<	public void testScheduleAtFixedRate2_RejectedExecutionException(){
224	<	try{
225	<	ScheduledExecutor se = new ScheduledExecutor(1);
211	>	se.schedule(new NoOpRunnable(),
212	>	MEDIUM_DELAY_MS, MILLISECONDS);
213	>	shouldThrow();
214	>	} catch (RejectedExecutionException success) {
215	>	} catch (SecurityException ok) {
216	>	}
217	>
218	>	joinPool(se);
219	>	}
220	>
221	>	/**
222	>	* schedule throws RejectedExecutionException if shutdown
223	>	*/
224	>	public void testSchedule2_RejectedExecutionException() throws InterruptedException {
225	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
226	>	try {
227		se.shutdown();
228	<	se.scheduleAtFixedRate(new Runnable(){
229	<	public void run(){}
230	<	},  1, 100, TimeUnit.SECONDS);
231	<	fail("should throw");
232	<	}catch(RejectedExecutionException e){}
228	>	se.schedule(new NoOpCallable(),
229	>	MEDIUM_DELAY_MS, MILLISECONDS);
230	>	shouldThrow();
231	>	} catch (RejectedExecutionException success) {
232	>	} catch (SecurityException ok) {
233	>	}
234	>	joinPool(se);
235		}
236
237		/**
238	<	*  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
238	>	* schedule callable throws RejectedExecutionException if shutdown
239		*/
240	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
241	<	try{
242	<	ScheduledExecutor se = new ScheduledExecutor(1);
240	>	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
241	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
242	>	try {
243		se.shutdown();
244	<	se.scheduleWithFixedDelay(new Runnable(){
245	<	public void run(){}
246	<	}, 100, 100, TimeUnit.SECONDS);
247	<	fail("should throw");
248	<	}catch(RejectedExecutionException e){}
244	>	se.schedule(new NoOpCallable(),
245	>	MEDIUM_DELAY_MS, MILLISECONDS);
246	>	shouldThrow();
247	>	} catch (RejectedExecutionException success) {
248	>	} catch (SecurityException ok) {
249	>	}
250	>	joinPool(se);
251		}
252
253		/**
254	<	*  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
254	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
255		*/
256	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
257	<	try{
258	<	ScheduledExecutor se = new ScheduledExecutor(1);
256	>	public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
257	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
258	>	try {
259		se.shutdown();
260	<	se.scheduleWithFixedDelay(new Runnable(){
261	<	public void run(){}
262	<	},  1, 100, TimeUnit.SECONDS);
263	<	fail("should throw");
264	<	}catch(RejectedExecutionException e){}
260	>	se.scheduleAtFixedRate(new NoOpRunnable(),
261	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
262	>	shouldThrow();
263	>	} catch (RejectedExecutionException success) {
264	>	} catch (SecurityException ok) {
265	>	}
266	>	joinPool(se);
267		}
268
269		/**
270	<	*  Test to verify execute throws RejectedExecutionException
250	<	*  This occurs on an attempt to schedule a task on a shutdown executor
270	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
271		*/
272	<	public void testExecute_RejectedExecutionException(){
273	<	try{
274	<	ScheduledExecutor se = new ScheduledExecutor(1);
272	>	public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
273	>	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
274	>	try {
275		se.shutdown();
276	<	se.execute(new Runnable(){
277	<	public void run(){}
278	<	});
279	<	fail("should throw");
280	<	}catch(RejectedExecutionException e){}
276	>	se.scheduleWithFixedDelay(new NoOpRunnable(),
277	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
278	>	shouldThrow();
279	>	} catch (RejectedExecutionException success) {
280	>	} catch (SecurityException ok) {
281	>	}
282	>	joinPool(se);
283	>	}
284	>
285	>	/**
286	>	* getActiveCount increases but doesn't overestimate, when a
287	>	* thread becomes active
288	>	*/
289	>	public void testGetActiveCount() throws InterruptedException {
290	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
291	>	final CountDownLatch threadStarted = new CountDownLatch(1);
292	>	final CountDownLatch done = new CountDownLatch(1);
293	>	try {
294	>	assertEquals(0, p.getActiveCount());
295	>	p.execute(new CheckedRunnable() {
296	>	public void realRun() throws InterruptedException {
297	>	threadStarted.countDown();
298	>	assertEquals(1, p.getActiveCount());
299	>	done.await();
300	>	}});
301	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
302	>	assertEquals(1, p.getActiveCount());
303	>	} finally {
304	>	done.countDown();
305	>	joinPool(p);
306	>	}
307	>	}
308	>
309	>	/**
310	>	* getCompletedTaskCount increases, but doesn't overestimate,
311	>	* when tasks complete
312	>	*/
313	>	public void testGetCompletedTaskCount() throws InterruptedException {
314	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
315	>	final CountDownLatch threadStarted = new CountDownLatch(1);
316	>	final CountDownLatch threadProceed = new CountDownLatch(1);
317	>	final CountDownLatch threadDone = new CountDownLatch(1);
318	>	try {
319	>	assertEquals(0, p.getCompletedTaskCount());
320	>	p.execute(new CheckedRunnable() {
321	>	public void realRun() throws InterruptedException {
322	>	threadStarted.countDown();
323	>	assertEquals(0, p.getCompletedTaskCount());
324	>	threadProceed.await();
325	>	threadDone.countDown();
326	>	}});
327	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
328	>	assertEquals(0, p.getCompletedTaskCount());
329	>	threadProceed.countDown();
330	>	threadDone.await();
331	>	delay(SHORT_DELAY_MS);
332	>	assertEquals(1, p.getCompletedTaskCount());
333	>	} finally {
334	>	joinPool(p);
335	>	}
336	>	}
337	>
338	>	/**
339	>	* getCorePoolSize returns size given in constructor if not otherwise set
340	>	*/
341	>	public void testGetCorePoolSize() throws InterruptedException {
342	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
343	>	assertEquals(1, p.getCorePoolSize());
344	>	joinPool(p);
345	>	}
346	>
347	>	/**
348	>	* getLargestPoolSize increases, but doesn't overestimate, when
349	>	* multiple threads active
350	>	*/
351	>	public void testGetLargestPoolSize() throws InterruptedException {
352	>	final int THREADS = 3;
353	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
354	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
355	>	final CountDownLatch done = new CountDownLatch(1);
356	>	try {
357	>	assertEquals(0, p.getLargestPoolSize());
358	>	for (int i = 0; i < THREADS; i++)
359	>	p.execute(new CheckedRunnable() {
360	>	public void realRun() throws InterruptedException {
361	>	threadsStarted.countDown();
362	>	done.await();
363	>	assertEquals(THREADS, p.getLargestPoolSize());
364	>	}});
365	>	assertTrue(threadsStarted.await(SMALL_DELAY_MS, MILLISECONDS));
366	>	assertEquals(THREADS, p.getLargestPoolSize());
367	>	} finally {
368	>	done.countDown();
369	>	joinPool(p);
370	>	assertEquals(THREADS, p.getLargestPoolSize());
371	>	}
372	>	}
373	>
374	>	/**
375	>	* getPoolSize increases, but doesn't overestimate, when threads
376	>	* become active
377	>	*/
378	>	public void testGetPoolSize() throws InterruptedException {
379	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
380	>	final CountDownLatch threadStarted = new CountDownLatch(1);
381	>	final CountDownLatch done = new CountDownLatch(1);
382	>	try {
383	>	assertEquals(0, p.getPoolSize());
384	>	p.execute(new CheckedRunnable() {
385	>	public void realRun() throws InterruptedException {
386	>	threadStarted.countDown();
387	>	assertEquals(1, p.getPoolSize());
388	>	done.await();
389	>	}});
390	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
391	>	assertEquals(1, p.getPoolSize());
392	>	} finally {
393	>	done.countDown();
394	>	joinPool(p);
395	>	}
396	>	}
397	>
398	>	/**
399	>	* getTaskCount increases, but doesn't overestimate, when tasks
400	>	* submitted
401	>	*/
402	>	public void testGetTaskCount() throws InterruptedException {
403	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
404	>	final CountDownLatch threadStarted = new CountDownLatch(1);
405	>	final CountDownLatch done = new CountDownLatch(1);
406	>	final int TASKS = 5;
407	>	try {
408	>	assertEquals(0, p.getTaskCount());
409	>	for (int i = 0; i < TASKS; i++)
410	>	p.execute(new CheckedRunnable() {
411	>	public void realRun() throws InterruptedException {
412	>	threadStarted.countDown();
413	>	done.await();
414	>	}});
415	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
416	>	assertEquals(TASKS, p.getTaskCount());
417	>	} finally {
418	>	done.countDown();
419	>	joinPool(p);
420	>	}
421	>	}
422	>
423	>	/**
424	>	* getThreadFactory returns factory in constructor if not set
425	>	*/
426	>	public void testGetThreadFactory() throws InterruptedException {
427	>	ThreadFactory tf = new SimpleThreadFactory();
428	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1, tf);
429	>	assertSame(tf, p.getThreadFactory());
430	>	joinPool(p);
431	>	}
432	>
433	>	/**
434	>	* setThreadFactory sets the thread factory returned by getThreadFactory
435	>	*/
436	>	public void testSetThreadFactory() throws InterruptedException {
437	>	ThreadFactory tf = new SimpleThreadFactory();
438	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
439	>	p.setThreadFactory(tf);
440	>	assertSame(tf, p.getThreadFactory());
441	>	joinPool(p);
442	>	}
443	>
444	>	/**
445	>	* setThreadFactory(null) throws NPE
446	>	*/
447	>	public void testSetThreadFactoryNull() throws InterruptedException {
448	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
449	>	try {
450	>	p.setThreadFactory(null);
451	>	shouldThrow();
452	>	} catch (NullPointerException success) {
453	>	} finally {
454	>	joinPool(p);
455	>	}
456	>	}
457	>
458	>	/**
459	>	* isShutdown is false before shutdown, true after
460	>	*/
461	>	public void testIsShutdown() {
462	>
463	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
464	>	try {
465	>	assertFalse(p.isShutdown());
466	>	}
467	>	finally {
468	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
469	>	}
470	>	assertTrue(p.isShutdown());
471	>	}
472	>
473	>	/**
474	>	* isTerminated is false before termination, true after
475	>	*/
476	>	public void testIsTerminated() throws InterruptedException {
477	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
478	>	final CountDownLatch threadStarted = new CountDownLatch(1);
479	>	final CountDownLatch done = new CountDownLatch(1);
480	>	assertFalse(p.isTerminated());
481	>	try {
482	>	p.execute(new CheckedRunnable() {
483	>	public void realRun() throws InterruptedException {
484	>	assertFalse(p.isTerminated());
485	>	threadStarted.countDown();
486	>	done.await();
487	>	}});
488	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
489	>	assertFalse(p.isTerminating());
490	>	done.countDown();
491	>	} finally {
492	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
493	>	}
494	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
495	>	assertTrue(p.isTerminated());
496	>	}
497	>
498	>	/**
499	>	* isTerminating is not true when running or when terminated
500	>	*/
501	>	public void testIsTerminating() throws InterruptedException {
502	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
503	>	final CountDownLatch threadStarted = new CountDownLatch(1);
504	>	final CountDownLatch done = new CountDownLatch(1);
505	>	try {
506	>	assertFalse(p.isTerminating());
507	>	p.execute(new CheckedRunnable() {
508	>	public void realRun() throws InterruptedException {
509	>	assertFalse(p.isTerminating());
510	>	threadStarted.countDown();
511	>	done.await();
512	>	}});
513	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
514	>	assertFalse(p.isTerminating());
515	>	done.countDown();
516	>	} finally {
517	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
518	>	}
519	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
520	>	assertTrue(p.isTerminated());
521	>	assertFalse(p.isTerminating());
522	>	}
523	>
524	>	/**
525	>	* getQueue returns the work queue, which contains queued tasks
526	>	*/
527	>	public void testGetQueue() throws InterruptedException {
528	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
529	>	final CountDownLatch threadStarted = new CountDownLatch(1);
530	>	final CountDownLatch done = new CountDownLatch(1);
531	>	try {
532	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
533	>	for (int i = 0; i < tasks.length; i++) {
534	>	Runnable r = new CheckedRunnable() {
535	>	public void realRun() throws InterruptedException {
536	>	threadStarted.countDown();
537	>	done.await();
538	>	}};
539	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
540	>	}
541	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
542	>	BlockingQueue<Runnable> q = p.getQueue();
543	>	assertTrue(q.contains(tasks[tasks.length - 1]));
544	>	assertFalse(q.contains(tasks[0]));
545	>	} finally {
546	>	done.countDown();
547	>	joinPool(p);
548	>	}
549	>	}
550	>
551	>	/**
552	>	* remove(task) removes queued task, and fails to remove active task
553	>	*/
554	>	public void testRemove() throws InterruptedException {
555	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
556	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
557	>	final CountDownLatch threadStarted = new CountDownLatch(1);
558	>	final CountDownLatch done = new CountDownLatch(1);
559	>	try {
560	>	for (int i = 0; i < tasks.length; i++) {
561	>	Runnable r = new CheckedRunnable() {
562	>	public void realRun() throws InterruptedException {
563	>	threadStarted.countDown();
564	>	done.await();
565	>	}};
566	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
567	>	}
568	>	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
569	>	BlockingQueue<Runnable> q = p.getQueue();
570	>	assertFalse(p.remove((Runnable)tasks[0]));
571	>	assertTrue(q.contains((Runnable)tasks[4]));
572	>	assertTrue(q.contains((Runnable)tasks[3]));
573	>	assertTrue(p.remove((Runnable)tasks[4]));
574	>	assertFalse(p.remove((Runnable)tasks[4]));
575	>	assertFalse(q.contains((Runnable)tasks[4]));
576	>	assertTrue(q.contains((Runnable)tasks[3]));
577	>	assertTrue(p.remove((Runnable)tasks[3]));
578	>	assertFalse(q.contains((Runnable)tasks[3]));
579	>	} finally {
580	>	done.countDown();
581	>	joinPool(p);
582	>	}
583	>	}
584	>
585	>	/**
586	>	* purge eventually removes cancelled tasks from the queue
587	>	*/
588	>	public void testPurge() throws InterruptedException {
589	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
590	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
591	>	for (int i = 0; i < tasks.length; i++)
592	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
593	>	LONG_DELAY_MS, MILLISECONDS);
594	>	try {
595	>	int max = tasks.length;
596	>	if (tasks[4].cancel(true)) --max;
597	>	if (tasks[3].cancel(true)) --max;
598	>	// There must eventually be an interference-free point at
599	>	// which purge will not fail. (At worst, when queue is empty.)
600	>	long startTime = System.nanoTime();
601	>	do {
602	>	p.purge();
603	>	long count = p.getTaskCount();
604	>	if (count == max)
605	>	return;
606	>	} while (millisElapsedSince(startTime) < MEDIUM_DELAY_MS);
607	>	fail("Purge failed to remove cancelled tasks");
608	>	} finally {
609	>	for (ScheduledFuture task : tasks)
610	>	task.cancel(true);
611	>	joinPool(p);
612	>	}
613	>	}
614	>
615	>	/**
616	>	* shutdownNow returns a list containing tasks that were not run
617	>	*/
618	>	public void testShutdownNow() {
619	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
620	>	for (int i = 0; i < 5; i++)
621	>	p.schedule(new SmallPossiblyInterruptedRunnable(),
622	>	LONG_DELAY_MS, MILLISECONDS);
623	>	try {
624	>	List<Runnable> l = p.shutdownNow();
625	>	assertTrue(p.isShutdown());
626	>	assertEquals(5, l.size());
627	>	} catch (SecurityException ok) {
628	>	// Allowed in case test doesn't have privs
629	>	} finally {
630	>	joinPool(p);
631	>	}
632	>	}
633	>
634	>	/**
635	>	* In default setting, shutdown cancels periodic but not delayed
636	>	* tasks at shutdown
637	>	*/
638	>	public void testShutdown1() throws InterruptedException {
639	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
640	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
641	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
642	>
643	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
644	>	for (int i = 0; i < tasks.length; i++)
645	>	tasks[i] = p.schedule(new NoOpRunnable(),
646	>	SHORT_DELAY_MS, MILLISECONDS);
647	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
648	>	BlockingQueue<Runnable> q = p.getQueue();
649	>	for (ScheduledFuture task : tasks) {
650	>	assertFalse(task.isDone());
651	>	assertFalse(task.isCancelled());
652	>	assertTrue(q.contains(task));
653	>	}
654	>	assertTrue(p.isShutdown());
655	>	assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS));
656	>	assertTrue(p.isTerminated());
657	>	for (ScheduledFuture task : tasks) {
658	>	assertTrue(task.isDone());
659	>	assertFalse(task.isCancelled());
660	>	}
661	>	}
662	>
663	>	/**
664	>	* If setExecuteExistingDelayedTasksAfterShutdownPolicy is false,
665	>	* delayed tasks are cancelled at shutdown
666	>	*/
667	>	public void testShutdown2() throws InterruptedException {
668	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
669	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
670	>	assertFalse(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
671	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
672	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
673	>	for (int i = 0; i < tasks.length; i++)
674	>	tasks[i] = p.schedule(new NoOpRunnable(),
675	>	SHORT_DELAY_MS, MILLISECONDS);
676	>	BlockingQueue q = p.getQueue();
677	>	assertEquals(tasks.length, q.size());
678	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
679	>	assertTrue(p.isShutdown());
680	>	assertTrue(q.isEmpty());
681	>	assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS));
682	>	assertTrue(p.isTerminated());
683	>	for (ScheduledFuture task : tasks) {
684	>	assertTrue(task.isDone());
685	>	assertTrue(task.isCancelled());
686	>	}
687	>	}
688	>
689	>	/**
690	>	* If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false,
691	>	* periodic tasks are cancelled at shutdown
692	>	*/
693	>	public void testShutdown3() throws InterruptedException {
694	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
695	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
696	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
697	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
698	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
699	>	assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
700	>	long initialDelay = LONG_DELAY_MS;
701	>	ScheduledFuture task =
702	>	p.scheduleAtFixedRate(new NoOpRunnable(), initialDelay,
703	>	5, MILLISECONDS);
704	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
705	>	assertTrue(p.isShutdown());
706	>	assertTrue(p.getQueue().isEmpty());
707	>	assertTrue(task.isDone());
708	>	assertTrue(task.isCancelled());
709	>	joinPool(p);
710	>	}
711	>
712	>	/**
713	>	* if setContinueExistingPeriodicTasksAfterShutdownPolicy is true,
714	>	* periodic tasks are not cancelled at shutdown
715	>	*/
716	>	public void testShutdown4() throws InterruptedException {
717	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
718	>	final CountDownLatch counter = new CountDownLatch(2);
719	>	try {
720	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
721	>	assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
722	>	assertTrue(p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
723	>	final Runnable r = new CheckedRunnable() {
724	>	public void realRun() {
725	>	counter.countDown();
726	>	}};
727	>	ScheduledFuture task =
728	>	p.scheduleAtFixedRate(r, 1, 1, MILLISECONDS);
729	>	assertFalse(task.isDone());
730	>	assertFalse(task.isCancelled());
731	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
732	>	assertFalse(task.isCancelled());
733	>	assertFalse(p.isTerminated());
734	>	assertTrue(p.isShutdown());
735	>	assertTrue(counter.await(SMALL_DELAY_MS, MILLISECONDS));
736	>	assertFalse(task.isCancelled());
737	>	assertTrue(task.cancel(false));
738	>	assertTrue(task.isDone());
739	>	assertTrue(task.isCancelled());
740	>	assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS));
741	>	assertTrue(p.isTerminated());
742	>	}
743	>	finally {
744	>	joinPool(p);
745	>	}
746	>	}
747	>
748	>	/**
749	>	* completed submit of callable returns result
750	>	*/
751	>	public void testSubmitCallable() throws Exception {
752	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
753	>	try {
754	>	Future<String> future = e.submit(new StringTask());
755	>	String result = future.get();
756	>	assertSame(TEST_STRING, result);
757	>	} finally {
758	>	joinPool(e);
759	>	}
760	>	}
761	>
762	>	/**
763	>	* completed submit of runnable returns successfully
764	>	*/
765	>	public void testSubmitRunnable() throws Exception {
766	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
767	>	try {
768	>	Future<?> future = e.submit(new NoOpRunnable());
769	>	future.get();
770	>	assertTrue(future.isDone());
771	>	} finally {
772	>	joinPool(e);
773	>	}
774	>	}
775	>
776	>	/**
777	>	* completed submit of (runnable, result) returns result
778	>	*/
779	>	public void testSubmitRunnable2() throws Exception {
780	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
781	>	try {
782	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
783	>	String result = future.get();
784	>	assertSame(TEST_STRING, result);
785	>	} finally {
786	>	joinPool(e);
787	>	}
788	>	}
789	>
790	>	/**
791	>	* invokeAny(null) throws NPE
792	>	*/
793	>	public void testInvokeAny1() throws Exception {
794	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
795	>	try {
796	>	e.invokeAny(null);
797	>	shouldThrow();
798	>	} catch (NullPointerException success) {
799	>	} finally {
800	>	joinPool(e);
801	>	}
802	>	}
803	>
804	>	/**
805	>	* invokeAny(empty collection) throws IAE
806	>	*/
807	>	public void testInvokeAny2() throws Exception {
808	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
809	>	try {
810	>	e.invokeAny(new ArrayList<Callable<String>>());
811	>	shouldThrow();
812	>	} catch (IllegalArgumentException success) {
813	>	} finally {
814	>	joinPool(e);
815	>	}
816	>	}
817	>
818	>	/**
819	>	* invokeAny(c) throws NPE if c has null elements
820	>	*/
821	>	public void testInvokeAny3() throws Exception {
822	>	CountDownLatch latch = new CountDownLatch(1);
823	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
824	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
825	>	l.add(latchAwaitingStringTask(latch));
826	>	l.add(null);
827	>	try {
828	>	e.invokeAny(l);
829	>	shouldThrow();
830	>	} catch (NullPointerException success) {
831	>	} finally {
832	>	latch.countDown();
833	>	joinPool(e);
834	>	}
835	>	}
836	>
837	>	/**
838	>	* invokeAny(c) throws ExecutionException if no task completes
839	>	*/
840	>	public void testInvokeAny4() throws Exception {
841	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
842	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
843	>	l.add(new NPETask());
844	>	try {
845	>	e.invokeAny(l);
846	>	shouldThrow();
847	>	} catch (ExecutionException success) {
848	>	assertTrue(success.getCause() instanceof NullPointerException);
849	>	} finally {
850	>	joinPool(e);
851	>	}
852	>	}
853	>
854	>	/**
855	>	* invokeAny(c) returns result of some task
856	>	*/
857	>	public void testInvokeAny5() throws Exception {
858	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
859	>	try {
860	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
861	>	l.add(new StringTask());
862	>	l.add(new StringTask());
863	>	String result = e.invokeAny(l);
864	>	assertSame(TEST_STRING, result);
865	>	} finally {
866	>	joinPool(e);
867	>	}
868	>	}
869	>
870	>	/**
871	>	* invokeAll(null) throws NPE
872	>	*/
873	>	public void testInvokeAll1() throws Exception {
874	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
875	>	try {
876	>	e.invokeAll(null);
877	>	shouldThrow();
878	>	} catch (NullPointerException success) {
879	>	} finally {
880	>	joinPool(e);
881	>	}
882	>	}
883	>
884	>	/**
885	>	* invokeAll(empty collection) returns empty collection
886	>	*/
887	>	public void testInvokeAll2() throws Exception {
888	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
889	>	try {
890	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
891	>	assertTrue(r.isEmpty());
892	>	} finally {
893	>	joinPool(e);
894	>	}
895	>	}
896	>
897	>	/**
898	>	* invokeAll(c) throws NPE if c has null elements
899	>	*/
900	>	public void testInvokeAll3() throws Exception {
901	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
902	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
903	>	l.add(new StringTask());
904	>	l.add(null);
905	>	try {
906	>	e.invokeAll(l);
907	>	shouldThrow();
908	>	} catch (NullPointerException success) {
909	>	} finally {
910	>	joinPool(e);
911	>	}
912	>	}
913	>
914	>	/**
915	>	* get of invokeAll(c) throws exception on failed task
916	>	*/
917	>	public void testInvokeAll4() throws Exception {
918	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
919	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
920	>	l.add(new NPETask());
921	>	List<Future<String>> futures = e.invokeAll(l);
922	>	assertEquals(1, futures.size());
923	>	try {
924	>	futures.get(0).get();
925	>	shouldThrow();
926	>	} catch (ExecutionException success) {
927	>	assertTrue(success.getCause() instanceof NullPointerException);
928	>	} finally {
929	>	joinPool(e);
930	>	}
931	>	}
932	>
933	>	/**
934	>	* invokeAll(c) returns results of all completed tasks
935	>	*/
936	>	public void testInvokeAll5() throws Exception {
937	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
938	>	try {
939	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
940	>	l.add(new StringTask());
941	>	l.add(new StringTask());
942	>	List<Future<String>> futures = e.invokeAll(l);
943	>	assertEquals(2, futures.size());
944	>	for (Future<String> future : futures)
945	>	assertSame(TEST_STRING, future.get());
946	>	} finally {
947	>	joinPool(e);
948	>	}
949	>	}
950	>
951	>	/**
952	>	* timed invokeAny(null) throws NPE
953	>	*/
954	>	public void testTimedInvokeAny1() throws Exception {
955	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
956	>	try {
957	>	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
958	>	shouldThrow();
959	>	} catch (NullPointerException success) {
960	>	} finally {
961	>	joinPool(e);
962	>	}
963	>	}
964	>
965	>	/**
966	>	* timed invokeAny(,,null) throws NPE
967	>	*/
968	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
969	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
970	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
971	>	l.add(new StringTask());
972	>	try {
973	>	e.invokeAny(l, MEDIUM_DELAY_MS, null);
974	>	shouldThrow();
975	>	} catch (NullPointerException success) {
976	>	} finally {
977	>	joinPool(e);
978	>	}
979	>	}
980	>
981	>	/**
982	>	* timed invokeAny(empty collection) throws IAE
983	>	*/
984	>	public void testTimedInvokeAny2() throws Exception {
985	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
986	>	try {
987	>	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
988	>	shouldThrow();
989	>	} catch (IllegalArgumentException success) {
990	>	} finally {
991	>	joinPool(e);
992	>	}
993	>	}
994	>
995	>	/**
996	>	* timed invokeAny(c) throws NPE if c has null elements
997	>	*/
998	>	public void testTimedInvokeAny3() throws Exception {
999	>	CountDownLatch latch = new CountDownLatch(1);
1000	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1001	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1002	>	l.add(latchAwaitingStringTask(latch));
1003	>	l.add(null);
1004	>	try {
1005	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1006	>	shouldThrow();
1007	>	} catch (NullPointerException success) {
1008	>	} finally {
1009	>	latch.countDown();
1010	>	joinPool(e);
1011	>	}
1012	>	}
1013	>
1014	>	/**
1015	>	* timed invokeAny(c) throws ExecutionException if no task completes
1016	>	*/
1017	>	public void testTimedInvokeAny4() throws Exception {
1018	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1019	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1020	>	l.add(new NPETask());
1021	>	try {
1022	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1023	>	shouldThrow();
1024	>	} catch (ExecutionException success) {
1025	>	assertTrue(success.getCause() instanceof NullPointerException);
1026	>	} finally {
1027	>	joinPool(e);
1028	>	}
1029	>	}
1030	>
1031	>	/**
1032	>	* timed invokeAny(c) returns result of some task
1033	>	*/
1034	>	public void testTimedInvokeAny5() throws Exception {
1035	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1036	>	try {
1037	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1038	>	l.add(new StringTask());
1039	>	l.add(new StringTask());
1040	>	String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1041	>	assertSame(TEST_STRING, result);
1042	>	} finally {
1043	>	joinPool(e);
1044	>	}
1045	>	}
1046	>
1047	>	/**
1048	>	* timed invokeAll(null) throws NPE
1049	>	*/
1050	>	public void testTimedInvokeAll1() throws Exception {
1051	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1052	>	try {
1053	>	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1054	>	shouldThrow();
1055	>	} catch (NullPointerException success) {
1056	>	} finally {
1057	>	joinPool(e);
1058	>	}
1059	>	}
1060	>
1061	>	/**
1062	>	* timed invokeAll(,,null) throws NPE
1063	>	*/
1064	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1065	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1066	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1067	>	l.add(new StringTask());
1068	>	try {
1069	>	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1070	>	shouldThrow();
1071	>	} catch (NullPointerException success) {
1072	>	} finally {
1073	>	joinPool(e);
1074	>	}
1075	>	}
1076	>
1077	>	/**
1078	>	* timed invokeAll(empty collection) returns empty collection
1079	>	*/
1080	>	public void testTimedInvokeAll2() throws Exception {
1081	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1082	>	try {
1083	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1084	>	assertTrue(r.isEmpty());
1085	>	} finally {
1086	>	joinPool(e);
1087	>	}
1088	>	}
1089	>
1090	>	/**
1091	>	* timed invokeAll(c) throws NPE if c has null elements
1092	>	*/
1093	>	public void testTimedInvokeAll3() throws Exception {
1094	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1095	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1096	>	l.add(new StringTask());
1097	>	l.add(null);
1098	>	try {
1099	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1100	>	shouldThrow();
1101	>	} catch (NullPointerException success) {
1102	>	} finally {
1103	>	joinPool(e);
1104	>	}
1105	>	}
1106	>
1107	>	/**
1108	>	* get of element of invokeAll(c) throws exception on failed task
1109	>	*/
1110	>	public void testTimedInvokeAll4() throws Exception {
1111	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1112	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1113	>	l.add(new NPETask());
1114	>	List<Future<String>> futures =
1115	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1116	>	assertEquals(1, futures.size());
1117	>	try {
1118	>	futures.get(0).get();
1119	>	shouldThrow();
1120	>	} catch (ExecutionException success) {
1121	>	assertTrue(success.getCause() instanceof NullPointerException);
1122	>	} finally {
1123	>	joinPool(e);
1124	>	}
1125	>	}
1126	>
1127	>	/**
1128	>	* timed invokeAll(c) returns results of all completed tasks
1129	>	*/
1130	>	public void testTimedInvokeAll5() throws Exception {
1131	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1132	>	try {
1133	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1134	>	l.add(new StringTask());
1135	>	l.add(new StringTask());
1136	>	List<Future<String>> futures =
1137	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1138	>	assertEquals(2, futures.size());
1139	>	for (Future<String> future : futures)
1140	>	assertSame(TEST_STRING, future.get());
1141	>	} finally {
1142	>	joinPool(e);
1143	>	}
1144	>	}
1145	>
1146	>	/**
1147	>	* timed invokeAll(c) cancels tasks not completed by timeout
1148	>	*/
1149	>	public void testTimedInvokeAll6() throws Exception {
1150	>	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1151	>	try {
1152	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1153	>	l.add(new StringTask());
1154	>	l.add(Executors.callable(new MediumPossiblyInterruptedRunnable(), TEST_STRING));
1155	>	l.add(new StringTask());
1156	>	List<Future<String>> futures =
1157	>	e.invokeAll(l, SHORT_DELAY_MS, MILLISECONDS);
1158	>	assertEquals(3, futures.size());
1159	>	Iterator<Future<String>> it = futures.iterator();
1160	>	Future<String> f1 = it.next();
1161	>	Future<String> f2 = it.next();
1162	>	Future<String> f3 = it.next();
1163	>	assertTrue(f1.isDone());
1164	>	assertTrue(f2.isDone());
1165	>	assertTrue(f3.isDone());
1166	>	assertFalse(f1.isCancelled());
1167	>	assertTrue(f2.isCancelled());
1168	>	} finally {
1169	>	joinPool(e);
1170	>	}
1171		}
1172
1173		}

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