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 p1 = new ScheduledExecutor(1);
            p1.execute(runnable);
            assertFalse(runnable.done);
            Thread.sleep(SHORT_DELAY_MS);
            p1.shutdown();
            try {
                Thread.sleep(MEDIUM_DELAY_MS);
            } catch(InterruptedException e){
                unexpectedException();
            }
            assertTrue(runnable.done);
            p1.shutdown();
            joinPool(p1);
        }
        catch(Exception e){
            unexpectedException();
        }
        
    }

    /**
     *
     */
    public void testSchedule1() {
        try {
            MyCallable callable = new MyCallable();
            ScheduledExecutor p1 = new ScheduledExecutor(1);
            Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            assertFalse(callable.done);
            Thread.sleep(MEDIUM_DELAY_MS);
            assertTrue(callable.done);
            assertEquals(Boolean.TRUE, f.get());
            p1.shutdown();
            joinPool(p1);
        } catch(RejectedExecutionException e){}
        catch(Exception e){
            unexpectedException();
        }
    }

    /**
     *  
     */
    public void testSchedule3() {
        try {
            MyRunnable runnable = new MyRunnable();
            ScheduledExecutor p1 = new ScheduledExecutor(1);
            p1.schedule(runnable, SMALL_DELAY_MS, TimeUnit.MILLISECONDS);
            Thread.sleep(SHORT_DELAY_MS);
            assertFalse(runnable.done);
            Thread.sleep(MEDIUM_DELAY_MS);
            assertTrue(runnable.done);
            p1.shutdown();
            joinPool(p1);
        } catch(Exception e){
            unexpectedException();
        }
    }
    
    /**
     *
     */
    public void testSchedule4() {
        try {
            MyRunnable runnable = new MyRunnable();
            ScheduledExecutor p1 = new ScheduledExecutor(1);
            p1.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            assertFalse(runnable.done);
            Thread.sleep(MEDIUM_DELAY_MS);
            assertTrue(runnable.done);
            p1.shutdown();
            joinPool(p1);
        } catch(Exception e){
            unexpectedException();
        }
    }
    
   
    // 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);
            shouldThrow();
        } 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);
            shouldThrow();
        } 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);
            shouldThrow();
        } 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);
            shouldThrow();
        } 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);
            shouldThrow();
        } 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);
            shouldThrow();
        } 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);
            shouldThrow();
        } 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());
            shouldThrow();
        } catch(RejectedExecutionException success){
        } 
        joinPool(se);
    }

    /**
     *   getActiveCount gives correct values
     */
    public void testGetActiveCount() {
        ScheduledExecutor p2 = new ScheduledExecutor(2);
        assertEquals(0, p2.getActiveCount());
        p2.execute(new SmallRunnable());
        try {
            Thread.sleep(SHORT_DELAY_MS);
        } catch(Exception e){
            unexpectedException();
        }
        assertEquals(1, p2.getActiveCount());
        joinPool(p2);
    }
    
    /**
     *   getCompleteTaskCount gives correct values
     */
    public void testGetCompletedTaskCount() {
        ScheduledExecutor p2 = new ScheduledExecutor(2);
        assertEquals(0, p2.getCompletedTaskCount());
        p2.execute(new SmallRunnable());
        try {
            Thread.sleep(MEDIUM_DELAY_MS);
        } catch(Exception e){
            unexpectedException();
        }
        assertEquals(1, p2.getCompletedTaskCount());
        joinPool(p2);
    }
    
    /**
     *   getCorePoolSize gives correct values
     */
    public void testGetCorePoolSize() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        assertEquals(1, p1.getCorePoolSize());
        joinPool(p1);
    }
    
    /**
     *   getLargestPoolSize gives correct values
     */
    public void testGetLargestPoolSize() {
        ScheduledExecutor p2 = new ScheduledExecutor(2);
        assertEquals(0, p2.getLargestPoolSize());
        p2.execute(new SmallRunnable());
        p2.execute(new SmallRunnable());
        try {
            Thread.sleep(SHORT_DELAY_MS);
        } catch(Exception e){
            unexpectedException();
        }
        assertEquals(2, p2.getLargestPoolSize());
        joinPool(p2);
    }
    
    /**
     *   getPoolSize gives correct values
     */
    public void testGetPoolSize() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        assertEquals(0, p1.getPoolSize());
        p1.execute(new SmallRunnable());
        assertEquals(1, p1.getPoolSize());
        joinPool(p1);
    }
    
    /**
     *   getTaskCount gives correct values
     */
    public void testGetTaskCount() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        assertEquals(0, p1.getTaskCount());
        for(int i = 0; i < 5; i++)
            p1.execute(new SmallRunnable());
        try {
            Thread.sleep(SHORT_DELAY_MS);
        } catch(Exception e){
            unexpectedException();
        }
        assertEquals(5, p1.getTaskCount());
        joinPool(p1);
    }
    
    /**
     *   isShutDown gives correct values
     */
    public void testIsShutdown() {
        
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        try {
            assertFalse(p1.isShutdown());
        }
        finally {
            p1.shutdown();
        }
        assertTrue(p1.isShutdown());
    }

        
    /**
     *  isTerminated gives correct values
     */
    public void testIsTerminated() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        try {
            p1.execute(new SmallRunnable());
        } finally {
            p1.shutdown();
        }
        try {
            assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
            assertTrue(p1.isTerminated());
        } catch(Exception e){
            unexpectedException();
        }       
    }

    /**
     *  isTerminating gives correct values
     */
    public void testIsTerminating() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        assertFalse(p1.isTerminating());
        try {
            p1.execute(new SmallRunnable());
            assertFalse(p1.isTerminating());
        } finally {
            p1.shutdown();
        }
        try {
            assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
            assertTrue(p1.isTerminated());
            assertFalse(p1.isTerminating());
        } catch(Exception e){
            unexpectedException();
        }       
    }

    /**
     *   that purge correctly removes cancelled tasks
     *  from the queue
     */
    public void testPurge() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        ScheduledCancellable[] tasks = new ScheduledCancellable[5];
        for(int i = 0; i < 5; i++){
            tasks[i] = p1.schedule(new SmallRunnable(), 1, TimeUnit.MILLISECONDS);
        }
        int max = 5;
        if (tasks[4].cancel(true)) --max;
        if (tasks[3].cancel(true)) --max;
        p1.purge();
        long count = p1.getTaskCount();
        assertTrue(count > 0 && count <= max);
        joinPool(p1);
    }

    /**
     *   shutDownNow returns a list
     *  containing the correct number of elements
     */
    public void testShutDownNow() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        for(int i = 0; i < 5; i++)
            p1.schedule(new SmallRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
        List l = p1.shutdownNow();
        assertTrue(p1.isShutdown());
        assertTrue(l.size() > 0 && l.size() <= 5);
        joinPool(p1);
    }

    /**
     *
     */
    public void testShutDown1() {
        try {
            ScheduledExecutor p1 = new ScheduledExecutor(1);
            assertTrue(p1.getExecuteExistingDelayedTasksAfterShutdownPolicy());
            assertFalse(p1.getContinueExistingPeriodicTasksAfterShutdownPolicy());

            ScheduledCancellable[] tasks = new ScheduledCancellable[5];
            for(int i = 0; i < 5; i++)
                tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            p1.shutdown();
            BlockingQueue q = p1.getQueue();
            for (Iterator it = q.iterator(); it.hasNext();) {
                ScheduledCancellable t = (ScheduledCancellable)it.next();
                assertFalse(t.isCancelled());
            }
            assertTrue(p1.isShutdown());
            Thread.sleep(SMALL_DELAY_MS);
            for (int i = 0; i < 5; ++i) {
                assertTrue(tasks[i].isDone());
                assertFalse(tasks[i].isCancelled());
            }
            
        }
        catch(Exception ex) {
            unexpectedException();
        }
    }


    /**
     *
     */
    public void testShutDown2() {
        try {
            ScheduledExecutor p1 = new ScheduledExecutor(1);
            p1.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
            ScheduledCancellable[] tasks = new ScheduledCancellable[5];
            for(int i = 0; i < 5; i++)
                tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            p1.shutdown();
            assertTrue(p1.isShutdown());
            BlockingQueue q = p1.getQueue();
            assertTrue(q.isEmpty());
            Thread.sleep(SMALL_DELAY_MS);
            assertTrue(p1.isTerminated());
        }
        catch(Exception ex) {
            unexpectedException();
        }
    }


    /**
     *
     */
    public void testShutDown3() {
        try {
            ScheduledExecutor p1 = new ScheduledExecutor(1);
            p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
            ScheduledCancellable task =
                p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
            p1.shutdown();
            assertTrue(p1.isShutdown());
            BlockingQueue q = p1.getQueue();
            assertTrue(q.isEmpty());
            Thread.sleep(SHORT_DELAY_MS);
            assertTrue(p1.isTerminated());
        }
        catch(Exception ex) {
            unexpectedException();
        }
    }

    /**
     *
     */
    public void testShutDown4() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        try {
            p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
            ScheduledCancellable task =
                p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
            assertFalse(task.isCancelled());
            p1.shutdown();
            assertFalse(task.isCancelled());
            assertFalse(p1.isTerminated());
            assertTrue(p1.isShutdown());
            Thread.sleep(SHORT_DELAY_MS);
            assertFalse(task.isCancelled());
            task.cancel(true);
            assertTrue(task.isCancelled());
            Thread.sleep(SHORT_DELAY_MS);
            assertTrue(p1.isTerminated());
        }
        catch(Exception ex) {
            unexpectedException();
        }
        finally {
            p1.shutdownNow();
        }
    }

}
Revision:	1.5
Committed:	Sat Sep 20 18:20:08 2003 UTC (20 years, 7 months ago) by dl
Branch:	MAIN
Changes since 1.4:	+208 -170 lines
Log Message:	Documentation scaffolding
#	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	}
39	return Boolean.TRUE;
40	}
41	}
42
43	/**
44	*
45	*/
46	public void testExecute() {
47	try {
48	MyRunnable runnable =new MyRunnable();
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	p1.shutdown();
61	joinPool(p1);
62	}
63	catch(Exception e){
64	unexpectedException();
65	}
66
67	}
68
69	/**
70	*
71	*/
72	public void testSchedule1() {
73	try {
74	MyCallable callable = new MyCallable();
75	ScheduledExecutor p1 = new ScheduledExecutor(1);
76	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
77	assertFalse(callable.done);
78	Thread.sleep(MEDIUM_DELAY_MS);
79	assertTrue(callable.done);
80	assertEquals(Boolean.TRUE, f.get());
81	p1.shutdown();
82	joinPool(p1);
83	} catch(RejectedExecutionException e){}
84	catch(Exception e){
85	unexpectedException();
86	}
87	}
88
89	/**
90	*
91	*/
92	public void testSchedule3() {
93	try {
94	MyRunnable runnable = new MyRunnable();
95	ScheduledExecutor p1 = new ScheduledExecutor(1);
96	p1.schedule(runnable, SMALL_DELAY_MS, TimeUnit.MILLISECONDS);
97	Thread.sleep(SHORT_DELAY_MS);
98	assertFalse(runnable.done);
99	Thread.sleep(MEDIUM_DELAY_MS);
100	assertTrue(runnable.done);
101	p1.shutdown();
102	joinPool(p1);
103	} catch(Exception e){
104	unexpectedException();
105	}
106	}
107
108	/**
109	*
110	*/
111	public void testSchedule4() {
112	try {
113	MyRunnable runnable = new MyRunnable();
114	ScheduledExecutor p1 = new ScheduledExecutor(1);
115	p1.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
116	assertFalse(runnable.done);
117	Thread.sleep(MEDIUM_DELAY_MS);
118	assertTrue(runnable.done);
119	p1.shutdown();
120	joinPool(p1);
121	} catch(Exception e){
122	unexpectedException();
123	}
124	}
125
126
127	// exception tests
128
129	/**
130	* schedule(Runnable, long) throws RejectedExecutionException
131	* This occurs on an attempt to schedule a task on a shutdown executor
132	*/
133	public void testSchedule1_RejectedExecutionException() {
134	ScheduledExecutor se = new ScheduledExecutor(1);
135	try {
136	se.shutdown();
137	se.schedule(new NoOpRunnable(),
138	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
139	shouldThrow();
140	} catch(RejectedExecutionException success){
141	}
142	joinPool(se);
143
144	}
145
146	/**
147	* schedule(Callable, long, TimeUnit) throws RejectedExecutionException
148	* This occurs on an attempt to schedule a task on a shutdown executor
149	*/
150	public void testSchedule2_RejectedExecutionException() {
151	ScheduledExecutor se = new ScheduledExecutor(1);
152	try {
153	se.shutdown();
154	se.schedule(new NoOpCallable(),
155	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
156	shouldThrow();
157	} catch(RejectedExecutionException success){
158	}
159	joinPool(se);
160	}
161
162	/**
163	* schedule(Callable, long) throws RejectedExecutionException
164	* This occurs on an attempt to schedule a task on a shutdown executor
165	*/
166	public void testSchedule3_RejectedExecutionException() {
167	ScheduledExecutor se = new ScheduledExecutor(1);
168	try {
169	se.shutdown();
170	se.schedule(new NoOpCallable(),
171	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
172	shouldThrow();
173	} catch(RejectedExecutionException success){
174	}
175	joinPool(se);
176	}
177
178	/**
179	* scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
180	* RejectedExecutionException.
181	* This occurs on an attempt to schedule a task on a shutdown executor
182	*/
183	public void testScheduleAtFixedRate1_RejectedExecutionException() {
184	ScheduledExecutor se = new ScheduledExecutor(1);
185	try {
186	se.shutdown();
187	se.scheduleAtFixedRate(new NoOpRunnable(),
188	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
189	shouldThrow();
190	} catch(RejectedExecutionException success){
191	}
192	joinPool(se);
193	}
194
195	/**
196	* scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
197	* RejectedExecutionException.
198	* This occurs on an attempt to schedule a task on a shutdown executor
199	*/
200	public void testScheduleAtFixedRate2_RejectedExecutionException() {
201	ScheduledExecutor se = new ScheduledExecutor(1);
202	try {
203	se.shutdown();
204	se.scheduleAtFixedRate(new NoOpRunnable(),
205	1, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
206	shouldThrow();
207	} catch(RejectedExecutionException success){
208	}
209	joinPool(se);
210	}
211
212	/**
213	* scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
214	* RejectedExecutionException.
215	* This occurs on an attempt to schedule a task on a shutdown executor
216	*/
217	public void testScheduleWithFixedDelay1_RejectedExecutionException() {
218	ScheduledExecutor se = new ScheduledExecutor(1);
219	try {
220	se.shutdown();
221	se.scheduleWithFixedDelay(new NoOpRunnable(),
222	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
223	shouldThrow();
224	} catch(RejectedExecutionException success){
225	}
226	joinPool(se);
227	}
228
229	/**
230	* scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
231	* RejectedExecutionException.
232	* This occurs on an attempt to schedule a task on a shutdown executor
233	*/
234	public void testScheduleWithFixedDelay2_RejectedExecutionException() {
235	ScheduledExecutor se = new ScheduledExecutor(1);
236	try {
237	se.shutdown();
238	se.scheduleWithFixedDelay(new NoOpRunnable(),
239	1, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
240	shouldThrow();
241	} catch(RejectedExecutionException success){
242	}
243	joinPool(se);
244	}
245
246	/**
247	* execute throws RejectedExecutionException
248	* This occurs on an attempt to schedule a task on a shutdown executor
249	*/
250	public void testExecute_RejectedExecutionException() {
251	ScheduledExecutor se = new ScheduledExecutor(1);
252	try {
253	se.shutdown();
254	se.execute(new NoOpRunnable());
255	shouldThrow();
256	} catch(RejectedExecutionException success){
257	}
258	joinPool(se);
259	}
260
261	/**
262	* getActiveCount gives correct values
263	*/
264	public void testGetActiveCount() {
265	ScheduledExecutor p2 = new ScheduledExecutor(2);
266	assertEquals(0, p2.getActiveCount());
267	p2.execute(new SmallRunnable());
268	try {
269	Thread.sleep(SHORT_DELAY_MS);
270	} catch(Exception e){
271	unexpectedException();
272	}
273	assertEquals(1, p2.getActiveCount());
274	joinPool(p2);
275	}
276
277	/**
278	* getCompleteTaskCount gives correct values
279	*/
280	public void testGetCompletedTaskCount() {
281	ScheduledExecutor p2 = new ScheduledExecutor(2);
282	assertEquals(0, p2.getCompletedTaskCount());
283	p2.execute(new SmallRunnable());
284	try {
285	Thread.sleep(MEDIUM_DELAY_MS);
286	} catch(Exception e){
287	unexpectedException();
288	}
289	assertEquals(1, p2.getCompletedTaskCount());
290	joinPool(p2);
291	}
292
293	/**
294	* getCorePoolSize gives correct values
295	*/
296	public void testGetCorePoolSize() {
297	ScheduledExecutor p1 = new ScheduledExecutor(1);
298	assertEquals(1, p1.getCorePoolSize());
299	joinPool(p1);
300	}
301
302	/**
303	* getLargestPoolSize gives correct values
304	*/
305	public void testGetLargestPoolSize() {
306	ScheduledExecutor p2 = new ScheduledExecutor(2);
307	assertEquals(0, p2.getLargestPoolSize());
308	p2.execute(new SmallRunnable());
309	p2.execute(new SmallRunnable());
310	try {
311	Thread.sleep(SHORT_DELAY_MS);
312	} catch(Exception e){
313	unexpectedException();
314	}
315	assertEquals(2, p2.getLargestPoolSize());
316	joinPool(p2);
317	}
318
319	/**
320	* getPoolSize gives correct values
321	*/
322	public void testGetPoolSize() {
323	ScheduledExecutor p1 = new ScheduledExecutor(1);
324	assertEquals(0, p1.getPoolSize());
325	p1.execute(new SmallRunnable());
326	assertEquals(1, p1.getPoolSize());
327	joinPool(p1);
328	}
329
330	/**
331	* getTaskCount gives correct values
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	* isShutDown gives correct values
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	* isTerminated gives correct values
365	*/
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 gives correct values
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	* that purge correctly removes cancelled tasks
404	* from the queue
405	*/
406	public void testPurge() {
407	ScheduledExecutor p1 = new ScheduledExecutor(1);
408	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
409	for(int i = 0; i < 5; i++){
410	tasks[i] = p1.schedule(new SmallRunnable(), 1, TimeUnit.MILLISECONDS);
411	}
412	int max = 5;
413	if (tasks[4].cancel(true)) --max;
414	if (tasks[3].cancel(true)) --max;
415	p1.purge();
416	long count = p1.getTaskCount();
417	assertTrue(count > 0 && count <= max);
418	joinPool(p1);
419	}
420
421	/**
422	* shutDownNow returns a list
423	* containing the correct number of elements
424	*/
425	public void testShutDownNow() {
426	ScheduledExecutor p1 = new ScheduledExecutor(1);
427	for(int i = 0; i < 5; i++)
428	p1.schedule(new SmallRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
429	List l = p1.shutdownNow();
430	assertTrue(p1.isShutdown());
431	assertTrue(l.size() > 0 && l.size() <= 5);
432	joinPool(p1);
433	}
434
435	/**
436	*
437	*/
438	public void testShutDown1() {
439	try {
440	ScheduledExecutor p1 = new ScheduledExecutor(1);
441	assertTrue(p1.getExecuteExistingDelayedTasksAfterShutdownPolicy());
442	assertFalse(p1.getContinueExistingPeriodicTasksAfterShutdownPolicy());
443
444	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
445	for(int i = 0; i < 5; i++)
446	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
447	p1.shutdown();
448	BlockingQueue q = p1.getQueue();
449	for (Iterator it = q.iterator(); it.hasNext();) {
450	ScheduledCancellable t = (ScheduledCancellable)it.next();
451	assertFalse(t.isCancelled());
452	}
453	assertTrue(p1.isShutdown());
454	Thread.sleep(SMALL_DELAY_MS);
455	for (int i = 0; i < 5; ++i) {
456	assertTrue(tasks[i].isDone());
457	assertFalse(tasks[i].isCancelled());
458	}
459
460	}
461	catch(Exception ex) {
462	unexpectedException();
463	}
464	}
465
466
467	/**
468	*
469	*/
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	*
492	*/
493	public void testShutDown3() {
494	try {
495	ScheduledExecutor p1 = new ScheduledExecutor(1);
496	p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
497	ScheduledCancellable task =
498	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
499	p1.shutdown();
500	assertTrue(p1.isShutdown());
501	BlockingQueue q = p1.getQueue();
502	assertTrue(q.isEmpty());
503	Thread.sleep(SHORT_DELAY_MS);
504	assertTrue(p1.isTerminated());
505	}
506	catch(Exception ex) {
507	unexpectedException();
508	}
509	}
510
511	/**
512	*
513	*/
514	public void testShutDown4() {
515	ScheduledExecutor p1 = new ScheduledExecutor(1);
516	try {
517	p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
518	ScheduledCancellable task =
519	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
520	assertFalse(task.isCancelled());
521	p1.shutdown();
522	assertFalse(task.isCancelled());
523	assertFalse(p1.isTerminated());
524	assertTrue(p1.isShutdown());
525	Thread.sleep(SHORT_DELAY_MS);
526	assertFalse(task.isCancelled());
527	task.cancel(true);
528	assertTrue(task.isCancelled());
529	Thread.sleep(SHORT_DELAY_MS);
530	assertTrue(p1.isTerminated());
531	}
532	catch(Exception ex) {
533	unexpectedException();
534	}
535	finally {
536	p1.shutdownNow();
537	}
538	}
539
540	}