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;
        }
    }

    /**
     * execute successfully executes a runnable
     */
    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();
        }
        
    }


    /**
     * delayed schedule of callable successfully executes after delay
     */
    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();
        }
    }

    /**
     *  delayed schedule of runnable successfully executes after delay
     */
    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();
        }
    }
    
    /**
     * scheduleAtFixedRate executes runnable after given initial delay
     */
    public void testSchedule4() {
        try {
            MyRunnable runnable = new MyRunnable();
            ScheduledExecutor p1 = new ScheduledExecutor(1);
            ScheduledCancellable h = p1.scheduleAtFixedRate(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            assertFalse(runnable.done);
            Thread.sleep(MEDIUM_DELAY_MS);
            assertTrue(runnable.done);
            h.cancel(true);
            p1.shutdown();
            joinPool(p1);
        } catch(Exception e){
            unexpectedException();
        }
    }

    /**
     * scheduleWithFixedDelay executes runnable after given initial delay
     */
    public void testSchedule5() {
        try {
            MyRunnable runnable = new MyRunnable();
            ScheduledExecutor p1 = new ScheduledExecutor(1);
            ScheduledCancellable h = p1.scheduleWithFixedDelay(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            assertFalse(runnable.done);
            Thread.sleep(MEDIUM_DELAY_MS);
            assertTrue(runnable.done);
            h.cancel(true);
            p1.shutdown();
            joinPool(p1);
        } catch(Exception e){
            unexpectedException();
        }
    }
    
    /**
     *  execute (null) throws NPE
     */
    public void testExecuteNull() {
        ScheduledExecutor se = null;
        try {
            se = new ScheduledExecutor(1);
            se.execute(null);
            shouldThrow();
        } catch(NullPointerException success){}
        catch(Exception e){
            unexpectedException();
        }
        
        joinPool(se);
    }

    /**
     * schedule (null) throws NPE
     */
    public void testScheduleNull() {
        ScheduledExecutor se = new ScheduledExecutor(1);
        try {
            MyCallable callable = null;
            Future f = se.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            shouldThrow();
        } catch(NullPointerException success){}
        catch(Exception e){
            unexpectedException();
        }
        joinPool(se);
    }
   
    /**
     * execute throws RejectedExecutionException if shutdown
     */
    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 throws RejectedExecutionException if shutdown
     */
    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 throws RejectedExecutionException if shutdown
     */
     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 throws RejectedExecutionException if shutdown
     */
    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);
    }
    
    /**
     * scheduleWithFixedDelay throws RejectedExecutionException if shutdown
     */
    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);
    }

    /**
     *  getActiveCount increases but doesn't overestimate, when a
     *  thread becomes active
     */
    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);
    }
    
    /**
     *    getCompletedTaskCount increases, but doesn't overestimate,
     *   when tasks complete
     */
    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 returns size given in constructor if not otherwise set 
     */
    public void testGetCorePoolSize() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        assertEquals(1, p1.getCorePoolSize());
        joinPool(p1);
    }
    
    /**
     *    getLargestPoolSize increases, but doesn't overestimate, when
     *   multiple threads active
     */
    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 increases, but doesn't overestimate, when threads
     *   become active
     */
    public void testGetPoolSize() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        assertEquals(0, p1.getPoolSize());
        p1.execute(new SmallRunnable());
        assertEquals(1, p1.getPoolSize());
        joinPool(p1);
    }
    
    /**
     *    getTaskCount increases, but doesn't overestimate, when tasks
     *    submitted
     */
    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);
    }
    
    /**
     *   is isShutDown is false before shutdown, true after
     */
    public void testIsShutdown() {
        
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        try {
            assertFalse(p1.isShutdown());
        }
        finally {
            p1.shutdown();
        }
        assertTrue(p1.isShutdown());
    }

        
    /**
     *   isTerminated is false before termination, true after
     */
    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 is not true when running or when terminated
     */
    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();
        }       
    }

    /**
     *   purge 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 tasks that were not run
     */
    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);
    }

    /**
     * In default setting, shutdown cancels periodic but not delayed
     * tasks at shutdown
     */
    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();
        }
    }


    /**
     * If setExecuteExistingDelayedTasksAfterShutdownPolicy is false,
     * delayed tasks are cancelled at shutdown
     */
    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();
        }
    }


    /**
     * If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false,
     * periodic tasks are not cancelled at shutdown
     */
    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();
        }
    }

    /**
     * if setContinueExistingPeriodicTasksAfterShutdownPolicy is true,
     * periodic tasks are cancelled at shutdown
     */
    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:	1.6
Committed:	Thu Sep 25 11:02:41 2003 UTC (20 years, 7 months ago) by dl
Branch:	MAIN
Changes since 1.5:	+87 -85 lines
Log Message:	improve tck javadocs; rename and add a few tests
#	User	Rev	Content
1	dl	1.1	/*
2			* Written by members of JCP JSR-166 Expert Group and released to the
3			* public domain. Use, modify, and redistribute this code in any way
4			* without acknowledgement. Other contributors include Andrew Wright,
5			* Jeffrey Hayes, Pat Fischer, Mike Judd.
6			*/
7
8			import junit.framework.*;
9			import java.util.*;
10			import java.util.concurrent.*;
11
12	dl	1.4	public class ScheduledExecutorTest extends JSR166TestCase {
13	dl	1.1	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	dl	1.5	public void run() {
23			try {
24	dl	1.4	Thread.sleep(SMALL_DELAY_MS);
25	dl	1.1	done = true;
26	dl	1.2	} catch(Exception e){
27			}
28	dl	1.1	}
29			}
30
31			static class MyCallable implements Callable {
32			volatile boolean done = false;
33	dl	1.5	public Object call() {
34			try {
35	dl	1.4	Thread.sleep(SMALL_DELAY_MS);
36	dl	1.1	done = true;
37	dl	1.5	} catch(Exception e){
38			}
39	dl	1.1	return Boolean.TRUE;
40			}
41			}
42
43	dl	1.5	/**
44	dl	1.6	* execute successfully executes a runnable
45	dl	1.5	*/
46			public void testExecute() {
47			try {
48	dl	1.1	MyRunnable runnable =new MyRunnable();
49	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
50			p1.execute(runnable);
51	dl	1.4	assertFalse(runnable.done);
52			Thread.sleep(SHORT_DELAY_MS);
53	dl	1.5	p1.shutdown();
54			try {
55	dl	1.2	Thread.sleep(MEDIUM_DELAY_MS);
56			} catch(InterruptedException e){
57	dl	1.5	unexpectedException();
58	dl	1.2	}
59	dl	1.1	assertTrue(runnable.done);
60	dl	1.5	p1.shutdown();
61			joinPool(p1);
62	dl	1.1	}
63			catch(Exception e){
64	dl	1.5	unexpectedException();
65	dl	1.1	}
66	dl	1.4
67	dl	1.1	}
68
69	dl	1.6
70	dl	1.5	/**
71	dl	1.6	* delayed schedule of callable successfully executes after delay
72	dl	1.5	*/
73			public void testSchedule1() {
74			try {
75	dl	1.1	MyCallable callable = new MyCallable();
76	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
77			Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
78	dl	1.4	assertFalse(callable.done);
79	dl	1.2	Thread.sleep(MEDIUM_DELAY_MS);
80	dl	1.1	assertTrue(callable.done);
81			assertEquals(Boolean.TRUE, f.get());
82	dl	1.5	p1.shutdown();
83			joinPool(p1);
84			} catch(RejectedExecutionException e){}
85	dl	1.2	catch(Exception e){
86	dl	1.5	unexpectedException();
87	dl	1.2	}
88	dl	1.1	}
89
90			/**
91	dl	1.6	* delayed schedule of runnable successfully executes after delay
92	dl	1.1	*/
93	dl	1.5	public void testSchedule3() {
94			try {
95	dl	1.1	MyRunnable runnable = new MyRunnable();
96	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
97			p1.schedule(runnable, SMALL_DELAY_MS, TimeUnit.MILLISECONDS);
98	dl	1.4	Thread.sleep(SHORT_DELAY_MS);
99			assertFalse(runnable.done);
100	dl	1.2	Thread.sleep(MEDIUM_DELAY_MS);
101	dl	1.1	assertTrue(runnable.done);
102	dl	1.5	p1.shutdown();
103			joinPool(p1);
104	dl	1.1	} catch(Exception e){
105	dl	1.5	unexpectedException();
106	dl	1.1	}
107			}
108
109			/**
110	dl	1.6	* scheduleAtFixedRate executes runnable after given initial delay
111	dl	1.1	*/
112	dl	1.5	public void testSchedule4() {
113			try {
114	dl	1.1	MyRunnable runnable = new MyRunnable();
115	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
116	dl	1.6	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			h.cancel(true);
121			p1.shutdown();
122			joinPool(p1);
123			} catch(Exception e){
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	dl	1.4	assertFalse(runnable.done);
137	dl	1.2	Thread.sleep(MEDIUM_DELAY_MS);
138	dl	1.1	assertTrue(runnable.done);
139	dl	1.6	h.cancel(true);
140	dl	1.5	p1.shutdown();
141			joinPool(p1);
142	dl	1.1	} catch(Exception e){
143	dl	1.5	unexpectedException();
144	dl	1.1	}
145			}
146
147	dl	1.6	/**
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			* schedule (null) throws NPE
166			*/
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	dl	1.1
180			/**
181	dl	1.6	* execute throws RejectedExecutionException if shutdown
182	dl	1.1	*/
183	dl	1.5	public void testSchedule1_RejectedExecutionException() {
184	dl	1.4	ScheduledExecutor se = new ScheduledExecutor(1);
185	dl	1.5	try {
186	dl	1.1	se.shutdown();
187	dl	1.4	se.schedule(new NoOpRunnable(),
188			MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
189	dl	1.5	shouldThrow();
190	dl	1.4	} catch(RejectedExecutionException success){
191			}
192			joinPool(se);
193
194	dl	1.1	}
195
196			/**
197	dl	1.6	* schedule throws RejectedExecutionException if shutdown
198	dl	1.1	*/
199	dl	1.5	public void testSchedule2_RejectedExecutionException() {
200	dl	1.4	ScheduledExecutor se = new ScheduledExecutor(1);
201	dl	1.5	try {
202	dl	1.1	se.shutdown();
203	dl	1.4	se.schedule(new NoOpCallable(),
204			MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
205	dl	1.5	shouldThrow();
206	dl	1.4	} catch(RejectedExecutionException success){
207			}
208			joinPool(se);
209	dl	1.1	}
210
211			/**
212	dl	1.6	* schedule callable throws RejectedExecutionException if shutdown
213	dl	1.1	*/
214	dl	1.5	public void testSchedule3_RejectedExecutionException() {
215	dl	1.4	ScheduledExecutor se = new ScheduledExecutor(1);
216	dl	1.5	try {
217	dl	1.1	se.shutdown();
218	dl	1.4	se.schedule(new NoOpCallable(),
219			MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
220	dl	1.5	shouldThrow();
221	dl	1.4	} catch(RejectedExecutionException success){
222			}
223			joinPool(se);
224	dl	1.1	}
225
226			/**
227	dl	1.6	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
228	dl	1.1	*/
229	dl	1.5	public void testScheduleAtFixedRate1_RejectedExecutionException() {
230	dl	1.4	ScheduledExecutor se = new ScheduledExecutor(1);
231	dl	1.5	try {
232	dl	1.1	se.shutdown();
233	dl	1.4	se.scheduleAtFixedRate(new NoOpRunnable(),
234			MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
235	dl	1.5	shouldThrow();
236	dl	1.4	} catch(RejectedExecutionException success){
237			}
238			joinPool(se);
239	dl	1.1	}
240
241			/**
242	dl	1.6	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
243	dl	1.1	*/
244	dl	1.5	public void testScheduleWithFixedDelay1_RejectedExecutionException() {
245	dl	1.4	ScheduledExecutor se = new ScheduledExecutor(1);
246	dl	1.5	try {
247	dl	1.1	se.shutdown();
248	dl	1.4	se.scheduleWithFixedDelay(new NoOpRunnable(),
249			MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
250	dl	1.5	shouldThrow();
251	dl	1.4	} catch(RejectedExecutionException success){
252			}
253			joinPool(se);
254	dl	1.1	}
255
256			/**
257	dl	1.6	* getActiveCount increases but doesn't overestimate, when a
258			* thread becomes active
259	dl	1.2	*/
260	dl	1.5	public void testGetActiveCount() {
261			ScheduledExecutor p2 = new ScheduledExecutor(2);
262			assertEquals(0, p2.getActiveCount());
263			p2.execute(new SmallRunnable());
264			try {
265	dl	1.4	Thread.sleep(SHORT_DELAY_MS);
266			} catch(Exception e){
267	dl	1.5	unexpectedException();
268	dl	1.2	}
269	dl	1.5	assertEquals(1, p2.getActiveCount());
270			joinPool(p2);
271	dl	1.2	}
272
273			/**
274	dl	1.6	* getCompletedTaskCount increases, but doesn't overestimate,
275			* when tasks complete
276	dl	1.2	*/
277	dl	1.5	public void testGetCompletedTaskCount() {
278			ScheduledExecutor p2 = new ScheduledExecutor(2);
279			assertEquals(0, p2.getCompletedTaskCount());
280			p2.execute(new SmallRunnable());
281			try {
282	dl	1.4	Thread.sleep(MEDIUM_DELAY_MS);
283			} catch(Exception e){
284	dl	1.5	unexpectedException();
285	dl	1.2	}
286	dl	1.5	assertEquals(1, p2.getCompletedTaskCount());
287			joinPool(p2);
288	dl	1.2	}
289
290			/**
291	dl	1.6	* getCorePoolSize returns size given in constructor if not otherwise set
292	dl	1.2	*/
293	dl	1.5	public void testGetCorePoolSize() {
294			ScheduledExecutor p1 = new ScheduledExecutor(1);
295			assertEquals(1, p1.getCorePoolSize());
296			joinPool(p1);
297	dl	1.2	}
298
299			/**
300	dl	1.6	* getLargestPoolSize increases, but doesn't overestimate, when
301			* multiple threads active
302	dl	1.2	*/
303	dl	1.5	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	dl	1.4	Thread.sleep(SHORT_DELAY_MS);
310			} catch(Exception e){
311	dl	1.5	unexpectedException();
312	dl	1.2	}
313	dl	1.5	assertEquals(2, p2.getLargestPoolSize());
314			joinPool(p2);
315	dl	1.2	}
316
317			/**
318	dl	1.6	* getPoolSize increases, but doesn't overestimate, when threads
319			* become active
320	dl	1.2	*/
321	dl	1.5	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	dl	1.2	}
328
329			/**
330	dl	1.6	* getTaskCount increases, but doesn't overestimate, when tasks
331			* submitted
332	dl	1.2	*/
333	dl	1.5	public void testGetTaskCount() {
334			ScheduledExecutor p1 = new ScheduledExecutor(1);
335			assertEquals(0, p1.getTaskCount());
336	dl	1.4	for(int i = 0; i < 5; i++)
337	dl	1.5	p1.execute(new SmallRunnable());
338			try {
339	dl	1.4	Thread.sleep(SHORT_DELAY_MS);
340			} catch(Exception e){
341	dl	1.5	unexpectedException();
342	dl	1.2	}
343	dl	1.5	assertEquals(5, p1.getTaskCount());
344			joinPool(p1);
345	dl	1.2	}
346
347			/**
348	dl	1.6	* is isShutDown is false before shutdown, true after
349	dl	1.2	*/
350	dl	1.5	public void testIsShutdown() {
351	dl	1.2
352	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
353	dl	1.2	try {
354	dl	1.5	assertFalse(p1.isShutdown());
355	dl	1.2	}
356			finally {
357	dl	1.5	p1.shutdown();
358	dl	1.2	}
359	dl	1.5	assertTrue(p1.isShutdown());
360	dl	1.2	}
361
362
363			/**
364	dl	1.6	* isTerminated is false before termination, true after
365	dl	1.2	*/
366	dl	1.5	public void testIsTerminated() {
367			ScheduledExecutor p1 = new ScheduledExecutor(1);
368	dl	1.2	try {
369	dl	1.5	p1.execute(new SmallRunnable());
370	dl	1.2	} finally {
371	dl	1.5	p1.shutdown();
372	dl	1.2	}
373	dl	1.4	try {
374	dl	1.5	assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
375			assertTrue(p1.isTerminated());
376	dl	1.2	} catch(Exception e){
377	dl	1.5	unexpectedException();
378			}
379			}
380
381			/**
382	dl	1.6	* isTerminating is not true when running or when terminated
383	dl	1.5	*/
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	dl	1.2	}
400			}
401
402			/**
403	dl	1.6	* purge removes cancelled tasks from the queue
404	dl	1.2	*/
405	dl	1.5	public void testPurge() {
406			ScheduledExecutor p1 = new ScheduledExecutor(1);
407	dl	1.4	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
408			for(int i = 0; i < 5; i++){
409	dl	1.5	tasks[i] = p1.schedule(new SmallRunnable(), 1, TimeUnit.MILLISECONDS);
410	dl	1.2	}
411	dl	1.4	int max = 5;
412			if (tasks[4].cancel(true)) --max;
413			if (tasks[3].cancel(true)) --max;
414	dl	1.5	p1.purge();
415			long count = p1.getTaskCount();
416	dl	1.4	assertTrue(count > 0 && count <= max);
417	dl	1.5	joinPool(p1);
418	dl	1.2	}
419
420			/**
421	dl	1.6	* shutDownNow returns a list containing tasks that were not run
422	dl	1.2	*/
423	dl	1.5	public void testShutDownNow() {
424			ScheduledExecutor p1 = new ScheduledExecutor(1);
425	dl	1.2	for(int i = 0; i < 5; i++)
426	dl	1.5	p1.schedule(new SmallRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
427			List l = p1.shutdownNow();
428			assertTrue(p1.isShutdown());
429	dl	1.2	assertTrue(l.size() > 0 && l.size() <= 5);
430	dl	1.5	joinPool(p1);
431	dl	1.2	}
432
433	dl	1.5	/**
434	dl	1.6	* In default setting, shutdown cancels periodic but not delayed
435			* tasks at shutdown
436	dl	1.5	*/
437			public void testShutDown1() {
438	dl	1.2	try {
439	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
440			assertTrue(p1.getExecuteExistingDelayedTasksAfterShutdownPolicy());
441			assertFalse(p1.getContinueExistingPeriodicTasksAfterShutdownPolicy());
442	dl	1.2
443			ScheduledCancellable[] tasks = new ScheduledCancellable[5];
444			for(int i = 0; i < 5; i++)
445	dl	1.5	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
446			p1.shutdown();
447			BlockingQueue q = p1.getQueue();
448	dl	1.2	for (Iterator it = q.iterator(); it.hasNext();) {
449			ScheduledCancellable t = (ScheduledCancellable)it.next();
450			assertFalse(t.isCancelled());
451			}
452	dl	1.5	assertTrue(p1.isShutdown());
453	dl	1.4	Thread.sleep(SMALL_DELAY_MS);
454	dl	1.2	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	dl	1.5	unexpectedException();
462	dl	1.2	}
463			}
464
465
466	dl	1.5	/**
467	dl	1.6	* If setExecuteExistingDelayedTasksAfterShutdownPolicy is false,
468			* delayed tasks are cancelled at shutdown
469	dl	1.5	*/
470			public void testShutDown2() {
471	dl	1.2	try {
472	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
473			p1.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
474	dl	1.2	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
475			for(int i = 0; i < 5; i++)
476	dl	1.5	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
477			p1.shutdown();
478			assertTrue(p1.isShutdown());
479			BlockingQueue q = p1.getQueue();
480	dl	1.2	assertTrue(q.isEmpty());
481	dl	1.4	Thread.sleep(SMALL_DELAY_MS);
482	dl	1.5	assertTrue(p1.isTerminated());
483	dl	1.2	}
484			catch(Exception ex) {
485	dl	1.5	unexpectedException();
486	dl	1.2	}
487			}
488
489
490	dl	1.5	/**
491	dl	1.6	* If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false,
492			* periodic tasks are not cancelled at shutdown
493	dl	1.5	*/
494			public void testShutDown3() {
495	dl	1.2	try {
496	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
497			p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
498	dl	1.2	ScheduledCancellable task =
499	dl	1.5	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
500			p1.shutdown();
501			assertTrue(p1.isShutdown());
502			BlockingQueue q = p1.getQueue();
503	dl	1.2	assertTrue(q.isEmpty());
504			Thread.sleep(SHORT_DELAY_MS);
505	dl	1.5	assertTrue(p1.isTerminated());
506	dl	1.2	}
507			catch(Exception ex) {
508	dl	1.5	unexpectedException();
509	dl	1.2	}
510			}
511
512	dl	1.5	/**
513	dl	1.6	* if setContinueExistingPeriodicTasksAfterShutdownPolicy is true,
514			* periodic tasks are cancelled at shutdown
515	dl	1.5	*/
516			public void testShutDown4() {
517			ScheduledExecutor p1 = new ScheduledExecutor(1);
518	dl	1.2	try {
519	dl	1.5	p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
520	dl	1.2	ScheduledCancellable task =
521	dl	1.5	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
522	dl	1.2	assertFalse(task.isCancelled());
523	dl	1.5	p1.shutdown();
524	dl	1.2	assertFalse(task.isCancelled());
525	dl	1.5	assertFalse(p1.isTerminated());
526			assertTrue(p1.isShutdown());
527	dl	1.2	Thread.sleep(SHORT_DELAY_MS);
528			assertFalse(task.isCancelled());
529			task.cancel(true);
530			assertTrue(task.isCancelled());
531			Thread.sleep(SHORT_DELAY_MS);
532	dl	1.5	assertTrue(p1.isTerminated());
533	dl	1.2	}
534			catch(Exception ex) {
535	dl	1.5	unexpectedException();
536	dl	1.2	}
537			finally {
538	dl	1.5	p1.shutdownNow();
539	dl	1.2	}
540	dl	1.1	}
541
542			}