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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 1.6 by dl, Thu Sep 25 11:02:41 2003 UTC

#	Line 9 | Line 9 | import junit.framework.*;
9		import java.util.*;
10		import java.util.concurrent.*;
11
12	<	public class ScheduledExecutorTest extends TestCase{
13	<
14	<	boolean flag = false;
15	<
12	>	public class ScheduledExecutorTest extends JSR166TestCase {
13		public static void main(String[] args) {
14		junit.textui.TestRunner.run (suite());
15		}
19	–
20	–
16		public static Test suite() {
17		return new TestSuite(ScheduledExecutorTest.class);
18		}
19
25	–	private static long SHORT_DELAY_MS = 100;
26	–	private static long MEDIUM_DELAY_MS = 1000;
27	–	private static long LONG_DELAY_MS = 10000;
28	–
20		static class MyRunnable implements Runnable {
30	–	volatile boolean waiting = true;
21		volatile boolean done = false;
22	<	public void run(){
23	<	try{
24	<	Thread.sleep(MEDIUM_DELAY_MS);
35	<	waiting = false;
22	>	public void run() {
23	>	try {
24	>	Thread.sleep(SMALL_DELAY_MS);
25		done = true;
26	<	} catch(Exception e){}
26	>	} catch(Exception e){
27	>	}
28		}
29		}
30
31		static class MyCallable implements Callable {
42	–	volatile boolean waiting = true;
32		volatile boolean done = false;
33	<	public Object call(){
34	<	try{
35	<	Thread.sleep(MEDIUM_DELAY_MS);
47	<	waiting = false;
33	>	public Object call() {
34	>	try {
35	>	Thread.sleep(SMALL_DELAY_MS);
36		done = true;
37	<	}catch(Exception e){}
37	>	} catch(Exception e){
38	>	}
39		return Boolean.TRUE;
40		}
41		}
42
43		/**
44	<	*  Test to verify execute successfully runs the given Runnable
44	>	* execute successfully executes a runnable
45		*/
46	<	public void testExecute(){
47	<	try{
46	>	public void testExecute() {
47	>	try {
48		MyRunnable runnable =new MyRunnable();
49	<	ScheduledExecutor one = new ScheduledExecutor(1);
50	<	one.execute(runnable);
51	<	Thread.sleep(100);
52	<	assertTrue(runnable.waiting);
53	<	one.shutdown();
54	<	// make sure the Runnable has time to complete
55	<	try{Thread.sleep(1010);}catch(InterruptedException e){}
56	<	assertFalse(runnable.waiting);
49	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
50	>	p1.execute(runnable);
51	>	assertFalse(runnable.done);
52	>	Thread.sleep(SHORT_DELAY_MS);
53	>	p1.shutdown();
54	>	try {
55	>	Thread.sleep(MEDIUM_DELAY_MS);
56	>	} catch(InterruptedException e){
57	>	unexpectedException();
58	>	}
59		assertTrue(runnable.done);
60	<	one.shutdown();
60	>	p1.shutdown();
61	>	joinPool(p1);
62		}
63		catch(Exception e){
64	<	fail("unexpected exception");
64	>	unexpectedException();
65		}
66	+
67		}
68
69	+
70		/**
71	<	*  Test to verify schedule successfully runs the given Callable.
78	<	*  The waiting flag shows that the Callable is not started until
79	<	*  immediately.
71	>	* delayed schedule of callable successfully executes after delay
72		*/
73	<	public void testSchedule1(){
74	<	try{
73	>	public void testSchedule1() {
74	>	try {
75		MyCallable callable = new MyCallable();
76	<	ScheduledExecutor one = new ScheduledExecutor(1);
77	<	Future f = one.schedule(callable, 500, TimeUnit.MILLISECONDS);
78	<	//      Thread.sleep(505);
79	<	assertTrue(callable.waiting);
88	<	Thread.sleep(2000);
76	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
77	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
78	>	assertFalse(callable.done);
79	>	Thread.sleep(MEDIUM_DELAY_MS);
80		assertTrue(callable.done);
81		assertEquals(Boolean.TRUE, f.get());
82	<	one.shutdown();
83	<	}catch(RejectedExecutionException e){}
84	<	catch(Exception e){}
82	>	p1.shutdown();
83	>	joinPool(p1);
84	>	} catch(RejectedExecutionException e){}
85	>	catch(Exception e){
86	>	unexpectedException();
87	>	}
88		}
89
90		/**
91	<	*  Another version of schedule, only using Runnable instead of Callable
91	>	*  delayed schedule of runnable successfully executes after delay
92		*/
93	<	public void testSchedule3(){
94	<	try{
93	>	public void testSchedule3() {
94	>	try {
95		MyRunnable runnable = new MyRunnable();
96	<	ScheduledExecutor one = new ScheduledExecutor(1);
97	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
98	<	Thread.sleep(50);
99	<	assertTrue(runnable.waiting);
100	<	Thread.sleep(2000);
96	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
97	>	p1.schedule(runnable, SMALL_DELAY_MS, TimeUnit.MILLISECONDS);
98	>	Thread.sleep(SHORT_DELAY_MS);
99	>	assertFalse(runnable.done);
100	>	Thread.sleep(MEDIUM_DELAY_MS);
101		assertTrue(runnable.done);
102	<	one.shutdown();
102	>	p1.shutdown();
103	>	joinPool(p1);
104		} catch(Exception e){
105	<	fail("unexpected exception");
105	>	unexpectedException();
106		}
107		}
108
109		/**
110	<	*  The final version of schedule, using both long, TimeUnit and Runnable
110	>	* scheduleAtFixedRate executes runnable after given initial delay
111		*/
112	<	public void testSchedule4(){
113	<	try{
112	>	public void testSchedule4() {
113	>	try {
114		MyRunnable runnable = new MyRunnable();
115	<	ScheduledExecutor one = new ScheduledExecutor(1);
116	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
117	<	//      Thread.sleep(505);
118	<	assertTrue(runnable.waiting);
124	<	Thread.sleep(2000);
115	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
116	>	ScheduledCancellable h = p1.scheduleAtFixedRate(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
117	>	assertFalse(runnable.done);
118	>	Thread.sleep(MEDIUM_DELAY_MS);
119		assertTrue(runnable.done);
120	<	one.shutdown();
120	>	h.cancel(true);
121	>	p1.shutdown();
122	>	joinPool(p1);
123		} catch(Exception e){
124	<	fail("unexpected exception");
124	>	unexpectedException();
125	>	}
126	>	}
127	>
128	>	/**
129	>	* scheduleWithFixedDelay executes runnable after given initial delay
130	>	*/
131	>	public void testSchedule5() {
132	>	try {
133	>	MyRunnable runnable = new MyRunnable();
134	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
135	>	ScheduledCancellable h = p1.scheduleWithFixedDelay(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
136	>	assertFalse(runnable.done);
137	>	Thread.sleep(MEDIUM_DELAY_MS);
138	>	assertTrue(runnable.done);
139	>	h.cancel(true);
140	>	p1.shutdown();
141	>	joinPool(p1);
142	>	} catch(Exception e){
143	>	unexpectedException();
144		}
145		}
146
147	<
148	<	// exception tests
147	>	/**
148	>	*  execute (null) throws NPE
149	>	*/
150	>	public void testExecuteNull() {
151	>	ScheduledExecutor se = null;
152	>	try {
153	>	se = new ScheduledExecutor(1);
154	>	se.execute(null);
155	>	shouldThrow();
156	>	} catch(NullPointerException success){}
157	>	catch(Exception e){
158	>	unexpectedException();
159	>	}
160	>
161	>	joinPool(se);
162	>	}
163
164		/**
165	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
137	<	*  This occurs on an attempt to schedule a task on a shutdown executor
165	>	* schedule (null) throws NPE
166		*/
167	<	public void testSchedule1_RejectedExecutionException(){
168	<	try{
169	<	ScheduledExecutor se = new ScheduledExecutor(1);
167	>	public void testScheduleNull() {
168	>	ScheduledExecutor se = new ScheduledExecutor(1);
169	>	try {
170	>	MyCallable callable = null;
171	>	Future f = se.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
172	>	shouldThrow();
173	>	} catch(NullPointerException success){}
174	>	catch(Exception e){
175	>	unexpectedException();
176	>	}
177	>	joinPool(se);
178	>	}
179	>
180	>	/**
181	>	* execute throws RejectedExecutionException if shutdown
182	>	*/
183	>	public void testSchedule1_RejectedExecutionException() {
184	>	ScheduledExecutor se = new ScheduledExecutor(1);
185	>	try {
186		se.shutdown();
187	<	se.schedule(new Runnable(){
188	<	public void run(){}
189	<	}, 10000, TimeUnit.MILLISECONDS);
190	<	fail("shoud throw");
191	<	}catch(RejectedExecutionException e){}
187	>	se.schedule(new NoOpRunnable(),
188	>	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
189	>	shouldThrow();
190	>	} catch(RejectedExecutionException success){
191	>	}
192	>	joinPool(se);
193	>
194		}
195
196		/**
197	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
152	<	*  This occurs on an attempt to schedule a task on a shutdown executor
197	>	* schedule throws RejectedExecutionException if shutdown
198		*/
199	<	public void testSchedule2_RejectedExecutionException(){
200	<	try{
201	<	ScheduledExecutor se = new ScheduledExecutor(1);
199	>	public void testSchedule2_RejectedExecutionException() {
200	>	ScheduledExecutor se = new ScheduledExecutor(1);
201	>	try {
202		se.shutdown();
203	<	se.schedule(new Callable(){
204	<	public Object call(){
205	<	return Boolean.TRUE;
206	<	}
207	<	}, (long)100, TimeUnit.SECONDS);
208	<	fail("should throw");
164	<	}catch(RejectedExecutionException e){}
203	>	se.schedule(new NoOpCallable(),
204	>	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
205	>	shouldThrow();
206	>	} catch(RejectedExecutionException success){
207	>	}
208	>	joinPool(se);
209		}
210
211		/**
212	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
213	<	*  This occurs on an attempt to schedule a task on a shutdown executor
214	<	*/
215	<	public void testSchedule3_RejectedExecutionException(){
216	<	try{
173	<	ScheduledExecutor se = new ScheduledExecutor(1);
212	>	* schedule callable throws RejectedExecutionException if shutdown
213	>	*/
214	>	public void testSchedule3_RejectedExecutionException() {
215	>	ScheduledExecutor se = new ScheduledExecutor(1);
216	>	try {
217		se.shutdown();
218	<	se.schedule(new Callable(){
219	<	public Object call(){
220	<	return Boolean.TRUE;
221	<	}
222	<	},  10000, TimeUnit.MILLISECONDS);
223	<	fail("should throw");
181	<	}catch(RejectedExecutionException e){}
218	>	se.schedule(new NoOpCallable(),
219	>	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
220	>	shouldThrow();
221	>	} catch(RejectedExecutionException success){
222	>	}
223	>	joinPool(se);
224		}
225
226		/**
227	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
228	<	*  RejectedExecutionException.
229	<	*  This occurs on an attempt to schedule a task on a shutdown executor
230	<	*/
231	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
190	<	try{
191	<	ScheduledExecutor se = new ScheduledExecutor(1);
227	>	*  scheduleAtFixedRate throws RejectedExecutionException if shutdown
228	>	*/
229	>	public void testScheduleAtFixedRate1_RejectedExecutionException() {
230	>	ScheduledExecutor se = new ScheduledExecutor(1);
231	>	try {
232		se.shutdown();
233	<	se.scheduleAtFixedRate(new Runnable(){
234	<	public void run(){}
235	<	}, 100, 100, TimeUnit.SECONDS);
236	<	fail("should throw");
237	<	}catch(RejectedExecutionException e){}
233	>	se.scheduleAtFixedRate(new NoOpRunnable(),
234	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
235	>	shouldThrow();
236	>	} catch(RejectedExecutionException success){
237	>	}
238	>	joinPool(se);
239		}
240
241		/**
242	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
202	<	*  RejectedExecutionException.
203	<	*  This occurs on an attempt to schedule a task on a shutdown executor
242	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
243		*/
244	<	public void testScheduleAtFixedRate2_RejectedExecutionException(){
245	<	try{
246	<	ScheduledExecutor se = new ScheduledExecutor(1);
244	>	public void testScheduleWithFixedDelay1_RejectedExecutionException() {
245	>	ScheduledExecutor se = new ScheduledExecutor(1);
246	>	try {
247		se.shutdown();
248	<	se.scheduleAtFixedRate(new Runnable(){
249	<	public void run(){}
250	<	},  1, 100, TimeUnit.SECONDS);
251	<	fail("should throw");
252	<	}catch(RejectedExecutionException e){}
248	>	se.scheduleWithFixedDelay(new NoOpRunnable(),
249	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
250	>	shouldThrow();
251	>	} catch(RejectedExecutionException success){
252	>	}
253	>	joinPool(se);
254		}
255
256		/**
257	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
258	<	*  RejectedExecutionException.
259	<	*  This occurs on an attempt to schedule a task on a shutdown executor
257	>	*  getActiveCount increases but doesn't overestimate, when a
258	>	*  thread becomes active
259	>	*/
260	>	public void testGetActiveCount() {
261	>	ScheduledExecutor p2 = new ScheduledExecutor(2);
262	>	assertEquals(0, p2.getActiveCount());
263	>	p2.execute(new SmallRunnable());
264	>	try {
265	>	Thread.sleep(SHORT_DELAY_MS);
266	>	} catch(Exception e){
267	>	unexpectedException();
268	>	}
269	>	assertEquals(1, p2.getActiveCount());
270	>	joinPool(p2);
271	>	}
272	>
273	>	/**
274	>	*    getCompletedTaskCount increases, but doesn't overestimate,
275	>	*   when tasks complete
276		*/
277	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
278	<	try{
279	<	ScheduledExecutor se = new ScheduledExecutor(1);
280	<	se.shutdown();
281	<	se.scheduleWithFixedDelay(new Runnable(){
282	<	public void run(){}
283	<	}, 100, 100, TimeUnit.SECONDS);
284	<	fail("should throw");
285	<	}catch(RejectedExecutionException e){}
277	>	public void testGetCompletedTaskCount() {
278	>	ScheduledExecutor p2 = new ScheduledExecutor(2);
279	>	assertEquals(0, p2.getCompletedTaskCount());
280	>	p2.execute(new SmallRunnable());
281	>	try {
282	>	Thread.sleep(MEDIUM_DELAY_MS);
283	>	} catch(Exception e){
284	>	unexpectedException();
285	>	}
286	>	assertEquals(1, p2.getCompletedTaskCount());
287	>	joinPool(p2);
288	>	}
289	>
290	>	/**
291	>	*  getCorePoolSize returns size given in constructor if not otherwise set
292	>	*/
293	>	public void testGetCorePoolSize() {
294	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
295	>	assertEquals(1, p1.getCorePoolSize());
296	>	joinPool(p1);
297	>	}
298	>
299	>	/**
300	>	*    getLargestPoolSize increases, but doesn't overestimate, when
301	>	*   multiple threads active
302	>	*/
303	>	public void testGetLargestPoolSize() {
304	>	ScheduledExecutor p2 = new ScheduledExecutor(2);
305	>	assertEquals(0, p2.getLargestPoolSize());
306	>	p2.execute(new SmallRunnable());
307	>	p2.execute(new SmallRunnable());
308	>	try {
309	>	Thread.sleep(SHORT_DELAY_MS);
310	>	} catch(Exception e){
311	>	unexpectedException();
312	>	}
313	>	assertEquals(2, p2.getLargestPoolSize());
314	>	joinPool(p2);
315	>	}
316	>
317	>	/**
318	>	*   getPoolSize increases, but doesn't overestimate, when threads
319	>	*   become active
320	>	*/
321	>	public void testGetPoolSize() {
322	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
323	>	assertEquals(0, p1.getPoolSize());
324	>	p1.execute(new SmallRunnable());
325	>	assertEquals(1, p1.getPoolSize());
326	>	joinPool(p1);
327	>	}
328	>
329	>	/**
330	>	*    getTaskCount increases, but doesn't overestimate, when tasks
331	>	*    submitted
332	>	*/
333	>	public void testGetTaskCount() {
334	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
335	>	assertEquals(0, p1.getTaskCount());
336	>	for(int i = 0; i < 5; i++)
337	>	p1.execute(new SmallRunnable());
338	>	try {
339	>	Thread.sleep(SHORT_DELAY_MS);
340	>	} catch(Exception e){
341	>	unexpectedException();
342	>	}
343	>	assertEquals(5, p1.getTaskCount());
344	>	joinPool(p1);
345	>	}
346	>
347	>	/**
348	>	*   is isShutDown is false before shutdown, true after
349	>	*/
350	>	public void testIsShutdown() {
351	>
352	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
353	>	try {
354	>	assertFalse(p1.isShutdown());
355	>	}
356	>	finally {
357	>	p1.shutdown();
358	>	}
359	>	assertTrue(p1.isShutdown());
360		}
361
362	+
363		/**
364	<	*  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
364	>	*   isTerminated is false before termination, true after
365		*/
366	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
367	<	try{
368	<	ScheduledExecutor se = new ScheduledExecutor(1);
369	<	se.shutdown();
370	<	se.scheduleWithFixedDelay(new Runnable(){
371	<	public void run(){}
372	<	},  1, 100, TimeUnit.SECONDS);
373	<	fail("should throw");
374	<	}catch(RejectedExecutionException e){}
366	>	public void testIsTerminated() {
367	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
368	>	try {
369	>	p1.execute(new SmallRunnable());
370	>	} finally {
371	>	p1.shutdown();
372	>	}
373	>	try {
374	>	assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
375	>	assertTrue(p1.isTerminated());
376	>	} catch(Exception e){
377	>	unexpectedException();
378	>	}
379	>	}
380	>
381	>	/**
382	>	*  isTerminating is not true when running or when terminated
383	>	*/
384	>	public void testIsTerminating() {
385	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
386	>	assertFalse(p1.isTerminating());
387	>	try {
388	>	p1.execute(new SmallRunnable());
389	>	assertFalse(p1.isTerminating());
390	>	} finally {
391	>	p1.shutdown();
392	>	}
393	>	try {
394	>	assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
395	>	assertTrue(p1.isTerminated());
396	>	assertFalse(p1.isTerminating());
397	>	} catch(Exception e){
398	>	unexpectedException();
399	>	}
400	>	}
401	>
402	>	/**
403	>	*   purge removes cancelled tasks from the queue
404	>	*/
405	>	public void testPurge() {
406	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
407	>	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
408	>	for(int i = 0; i < 5; i++){
409	>	tasks[i] = p1.schedule(new SmallRunnable(), 1, TimeUnit.MILLISECONDS);
410	>	}
411	>	int max = 5;
412	>	if (tasks[4].cancel(true)) --max;
413	>	if (tasks[3].cancel(true)) --max;
414	>	p1.purge();
415	>	long count = p1.getTaskCount();
416	>	assertTrue(count > 0 && count <= max);
417	>	joinPool(p1);
418		}
419
420		/**
421	<	*  Test to verify execute throws RejectedExecutionException
422	<	*  This occurs on an attempt to schedule a task on a shutdown executor
421	>	*  shutDownNow returns a list containing tasks that were not run
422	>	*/
423	>	public void testShutDownNow() {
424	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
425	>	for(int i = 0; i < 5; i++)
426	>	p1.schedule(new SmallRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
427	>	List l = p1.shutdownNow();
428	>	assertTrue(p1.isShutdown());
429	>	assertTrue(l.size() > 0 && l.size() <= 5);
430	>	joinPool(p1);
431	>	}
432	>
433	>	/**
434	>	* In default setting, shutdown cancels periodic but not delayed
435	>	* tasks at shutdown
436	>	*/
437	>	public void testShutDown1() {
438	>	try {
439	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
440	>	assertTrue(p1.getExecuteExistingDelayedTasksAfterShutdownPolicy());
441	>	assertFalse(p1.getContinueExistingPeriodicTasksAfterShutdownPolicy());
442	>
443	>	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
444	>	for(int i = 0; i < 5; i++)
445	>	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
446	>	p1.shutdown();
447	>	BlockingQueue q = p1.getQueue();
448	>	for (Iterator it = q.iterator(); it.hasNext();) {
449	>	ScheduledCancellable t = (ScheduledCancellable)it.next();
450	>	assertFalse(t.isCancelled());
451	>	}
452	>	assertTrue(p1.isShutdown());
453	>	Thread.sleep(SMALL_DELAY_MS);
454	>	for (int i = 0; i < 5; ++i) {
455	>	assertTrue(tasks[i].isDone());
456	>	assertFalse(tasks[i].isCancelled());
457	>	}
458	>
459	>	}
460	>	catch(Exception ex) {
461	>	unexpectedException();
462	>	}
463	>	}
464	>
465	>
466	>	/**
467	>	* If setExecuteExistingDelayedTasksAfterShutdownPolicy is false,
468	>	* delayed tasks are cancelled at shutdown
469		*/
470	<	public void testExecute_RejectedExecutionException(){
471	<	try{
472	<	ScheduledExecutor se = new ScheduledExecutor(1);
473	<	se.shutdown();
474	<	se.execute(new Runnable(){
475	<	public void run(){}
476	<	});
477	<	fail("should throw");
478	<	}catch(RejectedExecutionException e){}
470	>	public void testShutDown2() {
471	>	try {
472	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
473	>	p1.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
474	>	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
475	>	for(int i = 0; i < 5; i++)
476	>	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
477	>	p1.shutdown();
478	>	assertTrue(p1.isShutdown());
479	>	BlockingQueue q = p1.getQueue();
480	>	assertTrue(q.isEmpty());
481	>	Thread.sleep(SMALL_DELAY_MS);
482	>	assertTrue(p1.isTerminated());
483	>	}
484	>	catch(Exception ex) {
485	>	unexpectedException();
486	>	}
487	>	}
488	>
489	>
490	>	/**
491	>	* If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false,
492	>	* periodic tasks are not cancelled at shutdown
493	>	*/
494	>	public void testShutDown3() {
495	>	try {
496	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
497	>	p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
498	>	ScheduledCancellable task =
499	>	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
500	>	p1.shutdown();
501	>	assertTrue(p1.isShutdown());
502	>	BlockingQueue q = p1.getQueue();
503	>	assertTrue(q.isEmpty());
504	>	Thread.sleep(SHORT_DELAY_MS);
505	>	assertTrue(p1.isTerminated());
506	>	}
507	>	catch(Exception ex) {
508	>	unexpectedException();
509	>	}
510	>	}
511	>
512	>	/**
513	>	* if setContinueExistingPeriodicTasksAfterShutdownPolicy is true,
514	>	* periodic tasks are cancelled at shutdown
515	>	*/
516	>	public void testShutDown4() {
517	>	ScheduledExecutor p1 = new ScheduledExecutor(1);
518	>	try {
519	>	p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
520	>	ScheduledCancellable task =
521	>	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
522	>	assertFalse(task.isCancelled());
523	>	p1.shutdown();
524	>	assertFalse(task.isCancelled());
525	>	assertFalse(p1.isTerminated());
526	>	assertTrue(p1.isShutdown());
527	>	Thread.sleep(SHORT_DELAY_MS);
528	>	assertFalse(task.isCancelled());
529	>	task.cancel(true);
530	>	assertTrue(task.isCancelled());
531	>	Thread.sleep(SHORT_DELAY_MS);
532	>	assertTrue(p1.isTerminated());
533	>	}
534	>	catch(Exception ex) {
535	>	unexpectedException();
536	>	}
537	>	finally {
538	>	p1.shutdownNow();
539	>	}
540		}
541
542		}

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