test/tck/ScheduledExecutorTest.java

/*
 * Written by members of JCP JSR-166 Expert Group and released to the
 * public domain. Use, modify, and redistribute this code in any way
 * without acknowledgement. Other contributors include Andrew Wright,
 * Jeffrey Hayes, Pat Fischer, Mike Judd.
 */

import junit.framework.*;
import java.util.*;
import java.util.concurrent.*;

public class ScheduledExecutorTest extends JSR166TestCase {
    public static void main(String[] args) {
        junit.textui.TestRunner.run (suite());  
    }
    public static Test suite() {
        return new TestSuite(ScheduledExecutorTest.class);
    }

    static class MyRunnable implements Runnable {
        volatile boolean done = false;
        public void run(){
            try{
                Thread.sleep(SMALL_DELAY_MS);
                done = true;
            } catch(Exception e){
            }
        }
    }

    static class MyCallable implements Callable {
        volatile boolean done = false;
        public Object call(){
            try{
                Thread.sleep(SMALL_DELAY_MS);
                done = true;
            }catch(Exception e){}
            return Boolean.TRUE;
        }
    }

    public void testExecute(){
        try{
            MyRunnable runnable =new MyRunnable();
            ScheduledExecutor one = new ScheduledExecutor(1);
            one.execute(runnable);
            assertFalse(runnable.done);
            Thread.sleep(SHORT_DELAY_MS);
            one.shutdown();
            try{
                Thread.sleep(MEDIUM_DELAY_MS);
            } catch(InterruptedException e){
                fail("unexpected exception");
            }
            assertTrue(runnable.done);
            one.shutdown();
            joinPool(one);
        }
        catch(Exception e){
            fail("unexpected exception");
        }
        
    }

    public void testSchedule1(){
        try{
            MyCallable callable = new MyCallable();
            ScheduledExecutor one = new ScheduledExecutor(1);
            Future f = one.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            assertFalse(callable.done);
            Thread.sleep(MEDIUM_DELAY_MS);
            assertTrue(callable.done);
            assertEquals(Boolean.TRUE, f.get());
            one.shutdown();
            joinPool(one);
        }catch(RejectedExecutionException e){}
        catch(Exception e){
            fail("unexpected exception");
        }
    }

    /**
     *  Another version of schedule, only using Runnable instead of Callable
     */
    public void testSchedule3(){
        try{
            MyRunnable runnable = new MyRunnable();
            ScheduledExecutor one = new ScheduledExecutor(1);
            one.schedule(runnable, SMALL_DELAY_MS, TimeUnit.MILLISECONDS);
            Thread.sleep(SHORT_DELAY_MS);
            assertFalse(runnable.done);
            Thread.sleep(MEDIUM_DELAY_MS);
            assertTrue(runnable.done);
            one.shutdown();
            joinPool(one);
        } catch(Exception e){
            fail("unexpected exception");
        }
    }
    
    /**
     *  The final version of schedule, using both long, TimeUnit and Runnable
     */
    public void testSchedule4(){
        try{
            MyRunnable runnable = new MyRunnable();
            ScheduledExecutor one = new ScheduledExecutor(1);
            one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            assertFalse(runnable.done);
            Thread.sleep(MEDIUM_DELAY_MS);
            assertTrue(runnable.done);
            one.shutdown();
            joinPool(one);
        } catch(Exception e){
            fail("unexpected exception");
        }
    }
    
   
    // exception tests

    /**
     *   schedule(Runnable, long) throws RejectedExecutionException
     *  This occurs on an attempt to schedule a task on a shutdown executor
     */
    public void testSchedule1_RejectedExecutionException(){
        ScheduledExecutor se = new ScheduledExecutor(1);
        try{
            se.shutdown();
            se.schedule(new NoOpRunnable(),
                        MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            fail("shoud throw");
        } catch(RejectedExecutionException success){
        }
        joinPool(se);

    }

    /**
     *   schedule(Callable, long, TimeUnit) throws RejectedExecutionException
     *  This occurs on an attempt to schedule a task on a shutdown executor
     */
    public void testSchedule2_RejectedExecutionException(){
        ScheduledExecutor se = new ScheduledExecutor(1);
        try{
            se.shutdown();
            se.schedule(new NoOpCallable(),
                        MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            fail("should throw");
        } catch(RejectedExecutionException success){
        }
        joinPool(se);
    }

    /**
     *   schedule(Callable, long) throws RejectedExecutionException
     *  This occurs on an attempt to schedule a task on a shutdown executor
     */
     public void testSchedule3_RejectedExecutionException(){
         ScheduledExecutor se = new ScheduledExecutor(1);
         try{
            se.shutdown();
            se.schedule(new NoOpCallable(),
                        MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            fail("should throw");
        } catch(RejectedExecutionException success){
        } 
         joinPool(se);
    }

    /**
     *   scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws 
     *  RejectedExecutionException.
     *  This occurs on an attempt to schedule a task on a shutdown executor
     */
    public void testScheduleAtFixedRate1_RejectedExecutionException(){
        ScheduledExecutor se = new ScheduledExecutor(1);
        try{
            se.shutdown();
            se.scheduleAtFixedRate(new NoOpRunnable(),
                                   MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            fail("should throw");
        } catch(RejectedExecutionException success){
        } 
        joinPool(se);
    }
    
    /**
     *   scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws 
     *  RejectedExecutionException.
     *  This occurs on an attempt to schedule a task on a shutdown executor
     */
    public void testScheduleAtFixedRate2_RejectedExecutionException(){
        ScheduledExecutor se = new ScheduledExecutor(1);
        try{
            se.shutdown();
            se.scheduleAtFixedRate(new NoOpRunnable(),
                                   1, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            fail("should throw");
        } catch(RejectedExecutionException success){
        } 
        joinPool(se);
    }

    /**
     *   scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws 
     *  RejectedExecutionException.
     *  This occurs on an attempt to schedule a task on a shutdown executor
     */
    public void testScheduleWithFixedDelay1_RejectedExecutionException(){
        ScheduledExecutor se = new ScheduledExecutor(1);
        try{
            se.shutdown();
            se.scheduleWithFixedDelay(new NoOpRunnable(),
                                      MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            fail("should throw");
        } catch(RejectedExecutionException success){
        } 
        joinPool(se);
    }

    /**
     *   scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws 
     *  RejectedExecutionException.
     *  This occurs on an attempt to schedule a task on a shutdown executor
     */
     public void testScheduleWithFixedDelay2_RejectedExecutionException(){
         ScheduledExecutor se = new ScheduledExecutor(1);
        try{
            se.shutdown();
            se.scheduleWithFixedDelay(new NoOpRunnable(),
                                      1, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            fail("should throw");
        } catch(RejectedExecutionException success){
        } 
        joinPool(se);
    }

    /**
     *   execute throws RejectedExecutionException
     *  This occurs on an attempt to schedule a task on a shutdown executor
     */
    public void testExecute_RejectedExecutionException(){
        ScheduledExecutor se = new ScheduledExecutor(1);
        try{
            se.shutdown();
            se.execute(new NoOpRunnable());
            fail("should throw");
        } catch(RejectedExecutionException success){
        } 
        joinPool(se);
    }

    /**
     *   getActiveCount gives correct values
     */
    public void testGetActiveCount(){
        ScheduledExecutor two = new ScheduledExecutor(2);
        assertEquals(0, two.getActiveCount());
        two.execute(new SmallRunnable());
        try{
            Thread.sleep(SHORT_DELAY_MS);
        } catch(Exception e){
            fail("unexpected exception");
        }
        assertEquals(1, two.getActiveCount());
        joinPool(two);
    }
    
    /**
     *   getCompleteTaskCount gives correct values
     */
    public void testGetCompletedTaskCount(){
        ScheduledExecutor two = new ScheduledExecutor(2);
        assertEquals(0, two.getCompletedTaskCount());
        two.execute(new SmallRunnable());
        try{
            Thread.sleep(MEDIUM_DELAY_MS);
        } catch(Exception e){
            fail("unexpected exception");
        }
        assertEquals(1, two.getCompletedTaskCount());
        joinPool(two);
    }
    
    /**
     *   getCorePoolSize gives correct values
     */
    public void testGetCorePoolSize(){
        ScheduledExecutor one = new ScheduledExecutor(1);
        assertEquals(1, one.getCorePoolSize());
        joinPool(one);
    }
    
    /**
     *   getLargestPoolSize gives correct values
     */
    public void testGetLargestPoolSize(){
        ScheduledExecutor two = new ScheduledExecutor(2);
        assertEquals(0, two.getLargestPoolSize());
        two.execute(new SmallRunnable());
        two.execute(new SmallRunnable());
        try{
            Thread.sleep(SHORT_DELAY_MS);
        } catch(Exception e){
            fail("unexpected exception");
        }
        assertEquals(2, two.getLargestPoolSize());
        joinPool(two);
    }
    
    /**
     *   getPoolSize gives correct values
     */
    public void testGetPoolSize(){
        ScheduledExecutor one = new ScheduledExecutor(1);
        assertEquals(0, one.getPoolSize());
        one.execute(new SmallRunnable());
        assertEquals(1, one.getPoolSize());
        joinPool(one);
    }
    
    /**
     *   getTaskCount gives correct values
     */
    public void testGetTaskCount(){
        ScheduledExecutor one = new ScheduledExecutor(1);
        assertEquals(0, one.getTaskCount());
        for(int i = 0; i < 5; i++)
            one.execute(new SmallRunnable());
        try{
            Thread.sleep(SHORT_DELAY_MS);
        } catch(Exception e){
            fail("unexpected exception");
        }
        assertEquals(5, one.getTaskCount());
        joinPool(one);
    }
    
    /**
     *   isShutDown gives correct values
     */
    public void testIsShutdown(){
        
        ScheduledExecutor one = new ScheduledExecutor(1);
        try {
            assertFalse(one.isShutdown());
        }
        finally {
            one.shutdown();
        }
        assertTrue(one.isShutdown());
    }

        
    /**
     *   isTerminated gives correct values
     *  Makes sure termination does not take an innapropriate
     *  amount of time
     */
    public void testIsTerminated(){
        ScheduledExecutor one = new ScheduledExecutor(1);
        try {
            one.execute(new SmallRunnable());
        } finally {
            one.shutdown();
        }
        try {
            assertTrue(one.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
            assertTrue(one.isTerminated());
        } catch(Exception e){
            fail("unexpected exception");
        }       
    }

    /**
     *   that purge correctly removes cancelled tasks
     *  from the queue
     */
    public void testPurge(){
        ScheduledExecutor one = new ScheduledExecutor(1);
        ScheduledCancellable[] tasks = new ScheduledCancellable[5];
        for(int i = 0; i < 5; i++){
            tasks[i] = one.schedule(new SmallRunnable(), 1, TimeUnit.MILLISECONDS);
        }
        int max = 5;
        if (tasks[4].cancel(true)) --max;
        if (tasks[3].cancel(true)) --max;
        one.purge();
        long count = one.getTaskCount();
        assertTrue(count > 0 && count <= max);
        joinPool(one);
    }

    /**
     *   shutDownNow returns a list
     *  containing the correct number of elements
     */
    public void testShutDownNow(){
        ScheduledExecutor one = new ScheduledExecutor(1);
        for(int i = 0; i < 5; i++)
            one.schedule(new SmallRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
        List l = one.shutdownNow();
        assertTrue(one.isShutdown());
        assertTrue(l.size() > 0 && l.size() <= 5);
        joinPool(one);
    }

    public void testShutDown1(){
        try {
            ScheduledExecutor one = new ScheduledExecutor(1);
            assertTrue(one.getExecuteExistingDelayedTasksAfterShutdownPolicy());
            assertFalse(one.getContinueExistingPeriodicTasksAfterShutdownPolicy());

            ScheduledCancellable[] tasks = new ScheduledCancellable[5];
            for(int i = 0; i < 5; i++)
                tasks[i] = one.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            one.shutdown();
            BlockingQueue q = one.getQueue();
            for (Iterator it = q.iterator(); it.hasNext();) {
                ScheduledCancellable t = (ScheduledCancellable)it.next();
                assertFalse(t.isCancelled());
            }
            assertTrue(one.isShutdown());
            Thread.sleep(SMALL_DELAY_MS);
            for (int i = 0; i < 5; ++i) {
                assertTrue(tasks[i].isDone());
                assertFalse(tasks[i].isCancelled());
            }
            
        }
        catch(Exception ex) {
            fail("unexpected exception");
        }
    }


    public void testShutDown2(){
        try {
            ScheduledExecutor one = new ScheduledExecutor(1);
            one.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
            ScheduledCancellable[] tasks = new ScheduledCancellable[5];
            for(int i = 0; i < 5; i++)
                tasks[i] = one.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            one.shutdown();
            assertTrue(one.isShutdown());
            BlockingQueue q = one.getQueue();
            assertTrue(q.isEmpty());
            Thread.sleep(SMALL_DELAY_MS);
            assertTrue(one.isTerminated());
        }
        catch(Exception ex) {
            fail("unexpected exception");
        }
    }


    public void testShutDown3(){
        try {
            ScheduledExecutor one = new ScheduledExecutor(1);
            one.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
            ScheduledCancellable task =
                one.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
            one.shutdown();
            assertTrue(one.isShutdown());
            BlockingQueue q = one.getQueue();
            assertTrue(q.isEmpty());
            Thread.sleep(SHORT_DELAY_MS);
            assertTrue(one.isTerminated());
        }
        catch(Exception ex) {
            fail("unexpected exception");
        }
    }

    public void testShutDown4(){
        ScheduledExecutor one = new ScheduledExecutor(1);
        try {
            one.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
            ScheduledCancellable task =
                one.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
            assertFalse(task.isCancelled());
            one.shutdown();
            assertFalse(task.isCancelled());
            assertFalse(one.isTerminated());
            assertTrue(one.isShutdown());
            Thread.sleep(SHORT_DELAY_MS);
            assertFalse(task.isCancelled());
            task.cancel(true);
            assertTrue(task.isCancelled());
            Thread.sleep(SHORT_DELAY_MS);
            assertTrue(one.isTerminated());
        }
        catch(Exception ex) {
            fail("unexpected exception");
        }
        finally {
            one.shutdownNow();
        }
    }

}
Revision:	1.4
Committed:	Sun Sep 14 20:42:40 2003 UTC (20 years, 7 months ago) by dl
Branch:	MAIN
Changes since 1.3:	+144 -200 lines
Log Message:	New base class JSR166TestCase
#	Content
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.
6	*/
7
8	import junit.framework.*;
9	import java.util.*;
10	import java.util.concurrent.*;
11
12	public class ScheduledExecutorTest extends JSR166TestCase {
13	public static void main(String[] args) {
14	junit.textui.TestRunner.run (suite());
15	}
16	public static Test suite() {
17	return new TestSuite(ScheduledExecutorTest.class);
18	}
19
20	static class MyRunnable implements Runnable {
21	volatile boolean done = false;
22	public void run(){
23	try{
24	Thread.sleep(SMALL_DELAY_MS);
25	done = true;
26	} catch(Exception e){
27	}
28	}
29	}
30
31	static class MyCallable implements Callable {
32	volatile boolean done = false;
33	public Object call(){
34	try{
35	Thread.sleep(SMALL_DELAY_MS);
36	done = true;
37	}catch(Exception e){}
38	return Boolean.TRUE;
39	}
40	}
41
42	public void testExecute(){
43	try{
44	MyRunnable runnable =new MyRunnable();
45	ScheduledExecutor one = new ScheduledExecutor(1);
46	one.execute(runnable);
47	assertFalse(runnable.done);
48	Thread.sleep(SHORT_DELAY_MS);
49	one.shutdown();
50	try{
51	Thread.sleep(MEDIUM_DELAY_MS);
52	} catch(InterruptedException e){
53	fail("unexpected exception");
54	}
55	assertTrue(runnable.done);
56	one.shutdown();
57	joinPool(one);
58	}
59	catch(Exception e){
60	fail("unexpected exception");
61	}
62
63	}
64
65	public void testSchedule1(){
66	try{
67	MyCallable callable = new MyCallable();
68	ScheduledExecutor one = new ScheduledExecutor(1);
69	Future f = one.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
70	assertFalse(callable.done);
71	Thread.sleep(MEDIUM_DELAY_MS);
72	assertTrue(callable.done);
73	assertEquals(Boolean.TRUE, f.get());
74	one.shutdown();
75	joinPool(one);
76	}catch(RejectedExecutionException e){}
77	catch(Exception e){
78	fail("unexpected exception");
79	}
80	}
81
82	/**
83	* Another version of schedule, only using Runnable instead of Callable
84	*/
85	public void testSchedule3(){
86	try{
87	MyRunnable runnable = new MyRunnable();
88	ScheduledExecutor one = new ScheduledExecutor(1);
89	one.schedule(runnable, SMALL_DELAY_MS, TimeUnit.MILLISECONDS);
90	Thread.sleep(SHORT_DELAY_MS);
91	assertFalse(runnable.done);
92	Thread.sleep(MEDIUM_DELAY_MS);
93	assertTrue(runnable.done);
94	one.shutdown();
95	joinPool(one);
96	} catch(Exception e){
97	fail("unexpected exception");
98	}
99	}
100
101	/**
102	* The final version of schedule, using both long, TimeUnit and Runnable
103	*/
104	public void testSchedule4(){
105	try{
106	MyRunnable runnable = new MyRunnable();
107	ScheduledExecutor one = new ScheduledExecutor(1);
108	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
109	assertFalse(runnable.done);
110	Thread.sleep(MEDIUM_DELAY_MS);
111	assertTrue(runnable.done);
112	one.shutdown();
113	joinPool(one);
114	} catch(Exception e){
115	fail("unexpected exception");
116	}
117	}
118
119
120	// exception tests
121
122	/**
123	* schedule(Runnable, long) throws RejectedExecutionException
124	* This occurs on an attempt to schedule a task on a shutdown executor
125	*/
126	public void testSchedule1_RejectedExecutionException(){
127	ScheduledExecutor se = new ScheduledExecutor(1);
128	try{
129	se.shutdown();
130	se.schedule(new NoOpRunnable(),
131	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
132	fail("shoud throw");
133	} catch(RejectedExecutionException success){
134	}
135	joinPool(se);
136
137	}
138
139	/**
140	* schedule(Callable, long, TimeUnit) throws RejectedExecutionException
141	* This occurs on an attempt to schedule a task on a shutdown executor
142	*/
143	public void testSchedule2_RejectedExecutionException(){
144	ScheduledExecutor se = new ScheduledExecutor(1);
145	try{
146	se.shutdown();
147	se.schedule(new NoOpCallable(),
148	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
149	fail("should throw");
150	} catch(RejectedExecutionException success){
151	}
152	joinPool(se);
153	}
154
155	/**
156	* schedule(Callable, long) throws RejectedExecutionException
157	* This occurs on an attempt to schedule a task on a shutdown executor
158	*/
159	public void testSchedule3_RejectedExecutionException(){
160	ScheduledExecutor se = new ScheduledExecutor(1);
161	try{
162	se.shutdown();
163	se.schedule(new NoOpCallable(),
164	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
165	fail("should throw");
166	} catch(RejectedExecutionException success){
167	}
168	joinPool(se);
169	}
170
171	/**
172	* scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
173	* RejectedExecutionException.
174	* This occurs on an attempt to schedule a task on a shutdown executor
175	*/
176	public void testScheduleAtFixedRate1_RejectedExecutionException(){
177	ScheduledExecutor se = new ScheduledExecutor(1);
178	try{
179	se.shutdown();
180	se.scheduleAtFixedRate(new NoOpRunnable(),
181	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
182	fail("should throw");
183	} catch(RejectedExecutionException success){
184	}
185	joinPool(se);
186	}
187
188	/**
189	* scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
190	* RejectedExecutionException.
191	* This occurs on an attempt to schedule a task on a shutdown executor
192	*/
193	public void testScheduleAtFixedRate2_RejectedExecutionException(){
194	ScheduledExecutor se = new ScheduledExecutor(1);
195	try{
196	se.shutdown();
197	se.scheduleAtFixedRate(new NoOpRunnable(),
198	1, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
199	fail("should throw");
200	} catch(RejectedExecutionException success){
201	}
202	joinPool(se);
203	}
204
205	/**
206	* scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
207	* RejectedExecutionException.
208	* This occurs on an attempt to schedule a task on a shutdown executor
209	*/
210	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
211	ScheduledExecutor se = new ScheduledExecutor(1);
212	try{
213	se.shutdown();
214	se.scheduleWithFixedDelay(new NoOpRunnable(),
215	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
216	fail("should throw");
217	} catch(RejectedExecutionException success){
218	}
219	joinPool(se);
220	}
221
222	/**
223	* scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
224	* RejectedExecutionException.
225	* This occurs on an attempt to schedule a task on a shutdown executor
226	*/
227	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
228	ScheduledExecutor se = new ScheduledExecutor(1);
229	try{
230	se.shutdown();
231	se.scheduleWithFixedDelay(new NoOpRunnable(),
232	1, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
233	fail("should throw");
234	} catch(RejectedExecutionException success){
235	}
236	joinPool(se);
237	}
238
239	/**
240	* execute throws RejectedExecutionException
241	* This occurs on an attempt to schedule a task on a shutdown executor
242	*/
243	public void testExecute_RejectedExecutionException(){
244	ScheduledExecutor se = new ScheduledExecutor(1);
245	try{
246	se.shutdown();
247	se.execute(new NoOpRunnable());
248	fail("should throw");
249	} catch(RejectedExecutionException success){
250	}
251	joinPool(se);
252	}
253
254	/**
255	* getActiveCount gives correct values
256	*/
257	public void testGetActiveCount(){
258	ScheduledExecutor two = new ScheduledExecutor(2);
259	assertEquals(0, two.getActiveCount());
260	two.execute(new SmallRunnable());
261	try{
262	Thread.sleep(SHORT_DELAY_MS);
263	} catch(Exception e){
264	fail("unexpected exception");
265	}
266	assertEquals(1, two.getActiveCount());
267	joinPool(two);
268	}
269
270	/**
271	* getCompleteTaskCount gives correct values
272	*/
273	public void testGetCompletedTaskCount(){
274	ScheduledExecutor two = new ScheduledExecutor(2);
275	assertEquals(0, two.getCompletedTaskCount());
276	two.execute(new SmallRunnable());
277	try{
278	Thread.sleep(MEDIUM_DELAY_MS);
279	} catch(Exception e){
280	fail("unexpected exception");
281	}
282	assertEquals(1, two.getCompletedTaskCount());
283	joinPool(two);
284	}
285
286	/**
287	* getCorePoolSize gives correct values
288	*/
289	public void testGetCorePoolSize(){
290	ScheduledExecutor one = new ScheduledExecutor(1);
291	assertEquals(1, one.getCorePoolSize());
292	joinPool(one);
293	}
294
295	/**
296	* getLargestPoolSize gives correct values
297	*/
298	public void testGetLargestPoolSize(){
299	ScheduledExecutor two = new ScheduledExecutor(2);
300	assertEquals(0, two.getLargestPoolSize());
301	two.execute(new SmallRunnable());
302	two.execute(new SmallRunnable());
303	try{
304	Thread.sleep(SHORT_DELAY_MS);
305	} catch(Exception e){
306	fail("unexpected exception");
307	}
308	assertEquals(2, two.getLargestPoolSize());
309	joinPool(two);
310	}
311
312	/**
313	* getPoolSize gives correct values
314	*/
315	public void testGetPoolSize(){
316	ScheduledExecutor one = new ScheduledExecutor(1);
317	assertEquals(0, one.getPoolSize());
318	one.execute(new SmallRunnable());
319	assertEquals(1, one.getPoolSize());
320	joinPool(one);
321	}
322
323	/**
324	* getTaskCount gives correct values
325	*/
326	public void testGetTaskCount(){
327	ScheduledExecutor one = new ScheduledExecutor(1);
328	assertEquals(0, one.getTaskCount());
329	for(int i = 0; i < 5; i++)
330	one.execute(new SmallRunnable());
331	try{
332	Thread.sleep(SHORT_DELAY_MS);
333	} catch(Exception e){
334	fail("unexpected exception");
335	}
336	assertEquals(5, one.getTaskCount());
337	joinPool(one);
338	}
339
340	/**
341	* isShutDown gives correct values
342	*/
343	public void testIsShutdown(){
344
345	ScheduledExecutor one = new ScheduledExecutor(1);
346	try {
347	assertFalse(one.isShutdown());
348	}
349	finally {
350	one.shutdown();
351	}
352	assertTrue(one.isShutdown());
353	}
354
355
356	/**
357	* isTerminated gives correct values
358	* Makes sure termination does not take an innapropriate
359	* amount of time
360	*/
361	public void testIsTerminated(){
362	ScheduledExecutor one = new ScheduledExecutor(1);
363	try {
364	one.execute(new SmallRunnable());
365	} finally {
366	one.shutdown();
367	}
368	try {
369	assertTrue(one.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
370	assertTrue(one.isTerminated());
371	} catch(Exception e){
372	fail("unexpected exception");
373	}
374	}
375
376	/**
377	* that purge correctly removes cancelled tasks
378	* from the queue
379	*/
380	public void testPurge(){
381	ScheduledExecutor one = new ScheduledExecutor(1);
382	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
383	for(int i = 0; i < 5; i++){
384	tasks[i] = one.schedule(new SmallRunnable(), 1, TimeUnit.MILLISECONDS);
385	}
386	int max = 5;
387	if (tasks[4].cancel(true)) --max;
388	if (tasks[3].cancel(true)) --max;
389	one.purge();
390	long count = one.getTaskCount();
391	assertTrue(count > 0 && count <= max);
392	joinPool(one);
393	}
394
395	/**
396	* shutDownNow returns a list
397	* containing the correct number of elements
398	*/
399	public void testShutDownNow(){
400	ScheduledExecutor one = new ScheduledExecutor(1);
401	for(int i = 0; i < 5; i++)
402	one.schedule(new SmallRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
403	List l = one.shutdownNow();
404	assertTrue(one.isShutdown());
405	assertTrue(l.size() > 0 && l.size() <= 5);
406	joinPool(one);
407	}
408
409	public void testShutDown1(){
410	try {
411	ScheduledExecutor one = new ScheduledExecutor(1);
412	assertTrue(one.getExecuteExistingDelayedTasksAfterShutdownPolicy());
413	assertFalse(one.getContinueExistingPeriodicTasksAfterShutdownPolicy());
414
415	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
416	for(int i = 0; i < 5; i++)
417	tasks[i] = one.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
418	one.shutdown();
419	BlockingQueue q = one.getQueue();
420	for (Iterator it = q.iterator(); it.hasNext();) {
421	ScheduledCancellable t = (ScheduledCancellable)it.next();
422	assertFalse(t.isCancelled());
423	}
424	assertTrue(one.isShutdown());
425	Thread.sleep(SMALL_DELAY_MS);
426	for (int i = 0; i < 5; ++i) {
427	assertTrue(tasks[i].isDone());
428	assertFalse(tasks[i].isCancelled());
429	}
430
431	}
432	catch(Exception ex) {
433	fail("unexpected exception");
434	}
435	}
436
437
438	public void testShutDown2(){
439	try {
440	ScheduledExecutor one = new ScheduledExecutor(1);
441	one.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
442	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
443	for(int i = 0; i < 5; i++)
444	tasks[i] = one.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
445	one.shutdown();
446	assertTrue(one.isShutdown());
447	BlockingQueue q = one.getQueue();
448	assertTrue(q.isEmpty());
449	Thread.sleep(SMALL_DELAY_MS);
450	assertTrue(one.isTerminated());
451	}
452	catch(Exception ex) {
453	fail("unexpected exception");
454	}
455	}
456
457
458	public void testShutDown3(){
459	try {
460	ScheduledExecutor one = new ScheduledExecutor(1);
461	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
462	ScheduledCancellable task =
463	one.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
464	one.shutdown();
465	assertTrue(one.isShutdown());
466	BlockingQueue q = one.getQueue();
467	assertTrue(q.isEmpty());
468	Thread.sleep(SHORT_DELAY_MS);
469	assertTrue(one.isTerminated());
470	}
471	catch(Exception ex) {
472	fail("unexpected exception");
473	}
474	}
475
476	public void testShutDown4(){
477	ScheduledExecutor one = new ScheduledExecutor(1);
478	try {
479	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
480	ScheduledCancellable task =
481	one.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
482	assertFalse(task.isCancelled());
483	one.shutdown();
484	assertFalse(task.isCancelled());
485	assertFalse(one.isTerminated());
486	assertTrue(one.isShutdown());
487	Thread.sleep(SHORT_DELAY_MS);
488	assertFalse(task.isCancelled());
489	task.cancel(true);
490	assertTrue(task.isCancelled());
491	Thread.sleep(SHORT_DELAY_MS);
492	assertTrue(one.isTerminated());
493	}
494	catch(Exception ex) {
495	fail("unexpected exception");
496	}
497	finally {
498	one.shutdownNow();
499	}
500	}
501
502	}