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

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