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);
    }


    /**
     * execute successfully executes a runnable
     */
    public void testExecute() {
        try {
            TrackedShortRunnable runnable =new TrackedShortRunnable();
            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 {
            TrackedCallable callable = new TrackedCallable();
            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 {
            TrackedShortRunnable runnable = new TrackedShortRunnable();
            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 {
            TrackedShortRunnable runnable = new TrackedShortRunnable();
            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 {
            TrackedShortRunnable runnable = new TrackedShortRunnable();
            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 {
            TrackedCallable 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);
    }

    /** 
     * getThreadFactory returns factory in constructor if not set
     */
    public void testGetThreadFactory() {
        ThreadFactory tf = new SimpleThreadFactory();
        ScheduledExecutor p = new ScheduledExecutor(1, tf);
        assertSame(tf, p.getThreadFactory());
        p.shutdown();
        joinPool(p);
    }

    /** 
     * setThreadFactory sets the thread factory returned by getThreadFactory
     */
    public void testSetThreadFactory() {
        ThreadFactory tf = new SimpleThreadFactory();
        ScheduledExecutor p = new ScheduledExecutor(1);
        p.setThreadFactory(tf);
        assertSame(tf, p.getThreadFactory());
        p.shutdown();
        joinPool(p);
    }

    /** 
     * setThreadFactory(null) throws NPE
     */
    public void testSetThreadFactoryNull() {
        ScheduledExecutor p = new ScheduledExecutor(1);
        try {
            p.setThreadFactory(null);
            shouldThrow();
        } catch (NullPointerException success) {
        } finally {
            joinPool(p);
        }
    }
    
    /**
     *   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();
        }       
    }

    /**
     * getQueue returns the work queue, which contains queued tasks
     */
    public void testGetQueue() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        ScheduledCancellable[] tasks = new ScheduledCancellable[5];
        for(int i = 0; i < 5; i++){
            tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), 1, TimeUnit.MILLISECONDS);
        }
        try {
            Thread.sleep(SHORT_DELAY_MS);
            BlockingQueue<Runnable> q = p1.getQueue();
            assertTrue(q.contains(tasks[4]));
            assertFalse(q.contains(tasks[0]));
            p1.shutdownNow();
        } catch(Exception e) {
            unexpectedException();
        } finally {
            joinPool(p1);
        }
    }

    /**
     * remove(task) removes queued task, and fails to remove active task
     */
    public void testRemove() {
        ScheduledExecutor p1 = new ScheduledExecutor(1);
        ScheduledCancellable[] tasks = new ScheduledCancellable[5];
        for(int i = 0; i < 5; i++){
            tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), 1, TimeUnit.MILLISECONDS);
        }
        try {
            Thread.sleep(SHORT_DELAY_MS);
            BlockingQueue<Runnable> q = p1.getQueue();
            assertFalse(p1.remove((Runnable)tasks[0]));
            assertTrue(q.contains((Runnable)tasks[4]));
            assertTrue(q.contains((Runnable)tasks[3]));
            assertTrue(p1.remove((Runnable)tasks[4]));
            assertFalse(p1.remove((Runnable)tasks[4]));
            assertFalse(q.contains((Runnable)tasks[4]));
            assertTrue(q.contains((Runnable)tasks[3]));
            assertTrue(p1.remove((Runnable)tasks[3]));
            assertFalse(q.contains((Runnable)tasks[3]));
            p1.shutdownNow();
        } catch(Exception e) {
            unexpectedException();
        } finally {
            joinPool(p1);
        }
    }

    /**
     *  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 SmallPossiblyInterruptedRunnable(), 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 SmallPossiblyInterruptedRunnable(), 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:	1.8
Committed:	Sun Oct 5 23:00:40 2003 UTC (20 years, 7 months ago) by dl
Branch:	MAIN
CVS Tags:	JSR166_NOV3_FREEZE
Changes since 1.7:	+95 -7 lines
Log Message:	Added tests and documentation
#	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
21	dl	1.5	/**
22	dl	1.6	* execute successfully executes a runnable
23	dl	1.5	*/
24			public void testExecute() {
25			try {
26	dl	1.8	TrackedShortRunnable runnable =new TrackedShortRunnable();
27	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
28			p1.execute(runnable);
29	dl	1.4	assertFalse(runnable.done);
30			Thread.sleep(SHORT_DELAY_MS);
31	dl	1.5	p1.shutdown();
32			try {
33	dl	1.2	Thread.sleep(MEDIUM_DELAY_MS);
34			} catch(InterruptedException e){
35	dl	1.5	unexpectedException();
36	dl	1.2	}
37	dl	1.1	assertTrue(runnable.done);
38	dl	1.5	p1.shutdown();
39			joinPool(p1);
40	dl	1.1	}
41			catch(Exception e){
42	dl	1.5	unexpectedException();
43	dl	1.1	}
44	dl	1.4
45	dl	1.1	}
46
47	dl	1.6
48	dl	1.5	/**
49	dl	1.6	* delayed schedule of callable successfully executes after delay
50	dl	1.5	*/
51			public void testSchedule1() {
52			try {
53	dl	1.7	TrackedCallable callable = new TrackedCallable();
54	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
55			Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
56	dl	1.4	assertFalse(callable.done);
57	dl	1.2	Thread.sleep(MEDIUM_DELAY_MS);
58	dl	1.1	assertTrue(callable.done);
59			assertEquals(Boolean.TRUE, f.get());
60	dl	1.5	p1.shutdown();
61			joinPool(p1);
62			} catch(RejectedExecutionException e){}
63	dl	1.2	catch(Exception e){
64	dl	1.5	unexpectedException();
65	dl	1.2	}
66	dl	1.1	}
67
68			/**
69	dl	1.6	* delayed schedule of runnable successfully executes after delay
70	dl	1.1	*/
71	dl	1.5	public void testSchedule3() {
72			try {
73	dl	1.8	TrackedShortRunnable runnable = new TrackedShortRunnable();
74	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
75			p1.schedule(runnable, SMALL_DELAY_MS, TimeUnit.MILLISECONDS);
76	dl	1.4	Thread.sleep(SHORT_DELAY_MS);
77			assertFalse(runnable.done);
78	dl	1.2	Thread.sleep(MEDIUM_DELAY_MS);
79	dl	1.1	assertTrue(runnable.done);
80	dl	1.5	p1.shutdown();
81			joinPool(p1);
82	dl	1.1	} catch(Exception e){
83	dl	1.5	unexpectedException();
84	dl	1.1	}
85			}
86
87			/**
88	dl	1.6	* scheduleAtFixedRate executes runnable after given initial delay
89	dl	1.1	*/
90	dl	1.5	public void testSchedule4() {
91			try {
92	dl	1.8	TrackedShortRunnable runnable = new TrackedShortRunnable();
93	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
94	dl	1.6	ScheduledCancellable h = p1.scheduleAtFixedRate(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
95			assertFalse(runnable.done);
96			Thread.sleep(MEDIUM_DELAY_MS);
97			assertTrue(runnable.done);
98			h.cancel(true);
99			p1.shutdown();
100			joinPool(p1);
101			} catch(Exception e){
102			unexpectedException();
103			}
104			}
105
106			/**
107			* scheduleWithFixedDelay executes runnable after given initial delay
108			*/
109			public void testSchedule5() {
110			try {
111	dl	1.8	TrackedShortRunnable runnable = new TrackedShortRunnable();
112	dl	1.6	ScheduledExecutor p1 = new ScheduledExecutor(1);
113			ScheduledCancellable h = p1.scheduleWithFixedDelay(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
114	dl	1.4	assertFalse(runnable.done);
115	dl	1.2	Thread.sleep(MEDIUM_DELAY_MS);
116	dl	1.1	assertTrue(runnable.done);
117	dl	1.6	h.cancel(true);
118	dl	1.5	p1.shutdown();
119			joinPool(p1);
120	dl	1.1	} catch(Exception e){
121	dl	1.5	unexpectedException();
122	dl	1.1	}
123			}
124
125	dl	1.6	/**
126			* execute (null) throws NPE
127			*/
128			public void testExecuteNull() {
129			ScheduledExecutor se = null;
130			try {
131			se = new ScheduledExecutor(1);
132			se.execute(null);
133			shouldThrow();
134			} catch(NullPointerException success){}
135			catch(Exception e){
136			unexpectedException();
137			}
138
139			joinPool(se);
140			}
141
142			/**
143			* schedule (null) throws NPE
144			*/
145			public void testScheduleNull() {
146			ScheduledExecutor se = new ScheduledExecutor(1);
147			try {
148	dl	1.7	TrackedCallable callable = null;
149	dl	1.6	Future f = se.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
150			shouldThrow();
151			} catch(NullPointerException success){}
152			catch(Exception e){
153			unexpectedException();
154			}
155			joinPool(se);
156			}
157	dl	1.1
158			/**
159	dl	1.6	* execute throws RejectedExecutionException if shutdown
160	dl	1.1	*/
161	dl	1.5	public void testSchedule1_RejectedExecutionException() {
162	dl	1.4	ScheduledExecutor se = new ScheduledExecutor(1);
163	dl	1.5	try {
164	dl	1.1	se.shutdown();
165	dl	1.4	se.schedule(new NoOpRunnable(),
166			MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
167	dl	1.5	shouldThrow();
168	dl	1.4	} catch(RejectedExecutionException success){
169			}
170			joinPool(se);
171
172	dl	1.1	}
173
174			/**
175	dl	1.6	* schedule throws RejectedExecutionException if shutdown
176	dl	1.1	*/
177	dl	1.5	public void testSchedule2_RejectedExecutionException() {
178	dl	1.4	ScheduledExecutor se = new ScheduledExecutor(1);
179	dl	1.5	try {
180	dl	1.1	se.shutdown();
181	dl	1.4	se.schedule(new NoOpCallable(),
182			MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
183	dl	1.5	shouldThrow();
184	dl	1.4	} catch(RejectedExecutionException success){
185			}
186			joinPool(se);
187	dl	1.1	}
188
189			/**
190	dl	1.6	* schedule callable throws RejectedExecutionException if shutdown
191	dl	1.1	*/
192	dl	1.5	public void testSchedule3_RejectedExecutionException() {
193	dl	1.4	ScheduledExecutor se = new ScheduledExecutor(1);
194	dl	1.5	try {
195	dl	1.1	se.shutdown();
196	dl	1.4	se.schedule(new NoOpCallable(),
197			MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
198	dl	1.5	shouldThrow();
199	dl	1.4	} catch(RejectedExecutionException success){
200			}
201			joinPool(se);
202	dl	1.1	}
203
204			/**
205	dl	1.6	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
206	dl	1.1	*/
207	dl	1.5	public void testScheduleAtFixedRate1_RejectedExecutionException() {
208	dl	1.4	ScheduledExecutor se = new ScheduledExecutor(1);
209	dl	1.5	try {
210	dl	1.1	se.shutdown();
211	dl	1.4	se.scheduleAtFixedRate(new NoOpRunnable(),
212			MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
213	dl	1.5	shouldThrow();
214	dl	1.4	} catch(RejectedExecutionException success){
215			}
216			joinPool(se);
217	dl	1.1	}
218
219			/**
220	dl	1.6	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
221	dl	1.1	*/
222	dl	1.5	public void testScheduleWithFixedDelay1_RejectedExecutionException() {
223	dl	1.4	ScheduledExecutor se = new ScheduledExecutor(1);
224	dl	1.5	try {
225	dl	1.1	se.shutdown();
226	dl	1.4	se.scheduleWithFixedDelay(new NoOpRunnable(),
227			MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
228	dl	1.5	shouldThrow();
229	dl	1.4	} catch(RejectedExecutionException success){
230			}
231			joinPool(se);
232	dl	1.1	}
233
234			/**
235	dl	1.6	* getActiveCount increases but doesn't overestimate, when a
236			* thread becomes active
237	dl	1.2	*/
238	dl	1.5	public void testGetActiveCount() {
239			ScheduledExecutor p2 = new ScheduledExecutor(2);
240			assertEquals(0, p2.getActiveCount());
241			p2.execute(new SmallRunnable());
242			try {
243	dl	1.4	Thread.sleep(SHORT_DELAY_MS);
244			} catch(Exception e){
245	dl	1.5	unexpectedException();
246	dl	1.2	}
247	dl	1.5	assertEquals(1, p2.getActiveCount());
248			joinPool(p2);
249	dl	1.2	}
250
251			/**
252	dl	1.6	* getCompletedTaskCount increases, but doesn't overestimate,
253			* when tasks complete
254	dl	1.2	*/
255	dl	1.5	public void testGetCompletedTaskCount() {
256			ScheduledExecutor p2 = new ScheduledExecutor(2);
257			assertEquals(0, p2.getCompletedTaskCount());
258			p2.execute(new SmallRunnable());
259			try {
260	dl	1.4	Thread.sleep(MEDIUM_DELAY_MS);
261			} catch(Exception e){
262	dl	1.5	unexpectedException();
263	dl	1.2	}
264	dl	1.5	assertEquals(1, p2.getCompletedTaskCount());
265			joinPool(p2);
266	dl	1.2	}
267
268			/**
269	dl	1.6	* getCorePoolSize returns size given in constructor if not otherwise set
270	dl	1.2	*/
271	dl	1.5	public void testGetCorePoolSize() {
272			ScheduledExecutor p1 = new ScheduledExecutor(1);
273			assertEquals(1, p1.getCorePoolSize());
274			joinPool(p1);
275	dl	1.2	}
276
277			/**
278	dl	1.6	* getLargestPoolSize increases, but doesn't overestimate, when
279			* multiple threads active
280	dl	1.2	*/
281	dl	1.5	public void testGetLargestPoolSize() {
282			ScheduledExecutor p2 = new ScheduledExecutor(2);
283			assertEquals(0, p2.getLargestPoolSize());
284			p2.execute(new SmallRunnable());
285			p2.execute(new SmallRunnable());
286			try {
287	dl	1.4	Thread.sleep(SHORT_DELAY_MS);
288			} catch(Exception e){
289	dl	1.5	unexpectedException();
290	dl	1.2	}
291	dl	1.5	assertEquals(2, p2.getLargestPoolSize());
292			joinPool(p2);
293	dl	1.2	}
294
295			/**
296	dl	1.6	* getPoolSize increases, but doesn't overestimate, when threads
297			* become active
298	dl	1.2	*/
299	dl	1.5	public void testGetPoolSize() {
300			ScheduledExecutor p1 = new ScheduledExecutor(1);
301			assertEquals(0, p1.getPoolSize());
302			p1.execute(new SmallRunnable());
303			assertEquals(1, p1.getPoolSize());
304			joinPool(p1);
305	dl	1.2	}
306
307			/**
308	dl	1.6	* getTaskCount increases, but doesn't overestimate, when tasks
309			* submitted
310	dl	1.2	*/
311	dl	1.5	public void testGetTaskCount() {
312			ScheduledExecutor p1 = new ScheduledExecutor(1);
313			assertEquals(0, p1.getTaskCount());
314	dl	1.4	for(int i = 0; i < 5; i++)
315	dl	1.5	p1.execute(new SmallRunnable());
316			try {
317	dl	1.4	Thread.sleep(SHORT_DELAY_MS);
318			} catch(Exception e){
319	dl	1.5	unexpectedException();
320	dl	1.2	}
321	dl	1.5	assertEquals(5, p1.getTaskCount());
322			joinPool(p1);
323	dl	1.2	}
324	dl	1.8
325			/**
326			* getThreadFactory returns factory in constructor if not set
327			*/
328			public void testGetThreadFactory() {
329			ThreadFactory tf = new SimpleThreadFactory();
330			ScheduledExecutor p = new ScheduledExecutor(1, tf);
331			assertSame(tf, p.getThreadFactory());
332			p.shutdown();
333			joinPool(p);
334			}
335
336			/**
337			* setThreadFactory sets the thread factory returned by getThreadFactory
338			*/
339			public void testSetThreadFactory() {
340			ThreadFactory tf = new SimpleThreadFactory();
341			ScheduledExecutor p = new ScheduledExecutor(1);
342			p.setThreadFactory(tf);
343			assertSame(tf, p.getThreadFactory());
344			p.shutdown();
345			joinPool(p);
346			}
347
348			/**
349			* setThreadFactory(null) throws NPE
350			*/
351			public void testSetThreadFactoryNull() {
352			ScheduledExecutor p = new ScheduledExecutor(1);
353			try {
354			p.setThreadFactory(null);
355			shouldThrow();
356			} catch (NullPointerException success) {
357			} finally {
358			joinPool(p);
359			}
360			}
361	dl	1.2
362			/**
363	dl	1.6	* is isShutDown is false before shutdown, true after
364	dl	1.2	*/
365	dl	1.5	public void testIsShutdown() {
366	dl	1.2
367	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
368	dl	1.2	try {
369	dl	1.5	assertFalse(p1.isShutdown());
370	dl	1.2	}
371			finally {
372	dl	1.5	p1.shutdown();
373	dl	1.2	}
374	dl	1.5	assertTrue(p1.isShutdown());
375	dl	1.2	}
376
377
378			/**
379	dl	1.6	* isTerminated is false before termination, true after
380	dl	1.2	*/
381	dl	1.5	public void testIsTerminated() {
382			ScheduledExecutor p1 = new ScheduledExecutor(1);
383	dl	1.2	try {
384	dl	1.5	p1.execute(new SmallRunnable());
385	dl	1.2	} finally {
386	dl	1.5	p1.shutdown();
387	dl	1.2	}
388	dl	1.4	try {
389	dl	1.5	assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
390			assertTrue(p1.isTerminated());
391	dl	1.2	} catch(Exception e){
392	dl	1.5	unexpectedException();
393			}
394			}
395
396			/**
397	dl	1.6	* isTerminating is not true when running or when terminated
398	dl	1.5	*/
399			public void testIsTerminating() {
400			ScheduledExecutor p1 = new ScheduledExecutor(1);
401			assertFalse(p1.isTerminating());
402			try {
403			p1.execute(new SmallRunnable());
404			assertFalse(p1.isTerminating());
405			} finally {
406			p1.shutdown();
407			}
408			try {
409			assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
410			assertTrue(p1.isTerminated());
411			assertFalse(p1.isTerminating());
412			} catch(Exception e){
413			unexpectedException();
414	dl	1.2	}
415			}
416
417			/**
418	dl	1.8	* getQueue returns the work queue, which contains queued tasks
419			*/
420			public void testGetQueue() {
421			ScheduledExecutor p1 = new ScheduledExecutor(1);
422			ScheduledCancellable[] tasks = new ScheduledCancellable[5];
423			for(int i = 0; i < 5; i++){
424			tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), 1, TimeUnit.MILLISECONDS);
425			}
426			try {
427			Thread.sleep(SHORT_DELAY_MS);
428			BlockingQueue<Runnable> q = p1.getQueue();
429			assertTrue(q.contains(tasks[4]));
430			assertFalse(q.contains(tasks[0]));
431			p1.shutdownNow();
432			} catch(Exception e) {
433			unexpectedException();
434			} finally {
435			joinPool(p1);
436			}
437			}
438
439			/**
440			* remove(task) removes queued task, and fails to remove active task
441			*/
442			public void testRemove() {
443			ScheduledExecutor p1 = new ScheduledExecutor(1);
444			ScheduledCancellable[] tasks = new ScheduledCancellable[5];
445			for(int i = 0; i < 5; i++){
446			tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), 1, TimeUnit.MILLISECONDS);
447			}
448			try {
449			Thread.sleep(SHORT_DELAY_MS);
450			BlockingQueue<Runnable> q = p1.getQueue();
451			assertFalse(p1.remove((Runnable)tasks[0]));
452			assertTrue(q.contains((Runnable)tasks[4]));
453			assertTrue(q.contains((Runnable)tasks[3]));
454			assertTrue(p1.remove((Runnable)tasks[4]));
455			assertFalse(p1.remove((Runnable)tasks[4]));
456			assertFalse(q.contains((Runnable)tasks[4]));
457			assertTrue(q.contains((Runnable)tasks[3]));
458			assertTrue(p1.remove((Runnable)tasks[3]));
459			assertFalse(q.contains((Runnable)tasks[3]));
460			p1.shutdownNow();
461			} catch(Exception e) {
462			unexpectedException();
463			} finally {
464			joinPool(p1);
465			}
466			}
467
468			/**
469			* purge removes cancelled tasks from the queue
470	dl	1.2	*/
471	dl	1.5	public void testPurge() {
472			ScheduledExecutor p1 = new ScheduledExecutor(1);
473	dl	1.4	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
474			for(int i = 0; i < 5; i++){
475	dl	1.8	tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), 1, TimeUnit.MILLISECONDS);
476	dl	1.2	}
477	dl	1.4	int max = 5;
478			if (tasks[4].cancel(true)) --max;
479			if (tasks[3].cancel(true)) --max;
480	dl	1.5	p1.purge();
481			long count = p1.getTaskCount();
482	dl	1.4	assertTrue(count > 0 && count <= max);
483	dl	1.5	joinPool(p1);
484	dl	1.2	}
485
486			/**
487	dl	1.6	* shutDownNow returns a list containing tasks that were not run
488	dl	1.2	*/
489	dl	1.5	public void testShutDownNow() {
490			ScheduledExecutor p1 = new ScheduledExecutor(1);
491	dl	1.2	for(int i = 0; i < 5; i++)
492	dl	1.8	p1.schedule(new SmallPossiblyInterruptedRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
493	dl	1.5	List l = p1.shutdownNow();
494			assertTrue(p1.isShutdown());
495	dl	1.2	assertTrue(l.size() > 0 && l.size() <= 5);
496	dl	1.5	joinPool(p1);
497	dl	1.2	}
498
499	dl	1.5	/**
500	dl	1.6	* In default setting, shutdown cancels periodic but not delayed
501			* tasks at shutdown
502	dl	1.5	*/
503			public void testShutDown1() {
504	dl	1.2	try {
505	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
506			assertTrue(p1.getExecuteExistingDelayedTasksAfterShutdownPolicy());
507			assertFalse(p1.getContinueExistingPeriodicTasksAfterShutdownPolicy());
508	dl	1.2
509			ScheduledCancellable[] tasks = new ScheduledCancellable[5];
510			for(int i = 0; i < 5; i++)
511	dl	1.5	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
512			p1.shutdown();
513			BlockingQueue q = p1.getQueue();
514	dl	1.2	for (Iterator it = q.iterator(); it.hasNext();) {
515			ScheduledCancellable t = (ScheduledCancellable)it.next();
516			assertFalse(t.isCancelled());
517			}
518	dl	1.5	assertTrue(p1.isShutdown());
519	dl	1.4	Thread.sleep(SMALL_DELAY_MS);
520	dl	1.2	for (int i = 0; i < 5; ++i) {
521			assertTrue(tasks[i].isDone());
522			assertFalse(tasks[i].isCancelled());
523			}
524
525			}
526			catch(Exception ex) {
527	dl	1.5	unexpectedException();
528	dl	1.2	}
529			}
530
531
532	dl	1.5	/**
533	dl	1.6	* If setExecuteExistingDelayedTasksAfterShutdownPolicy is false,
534			* delayed tasks are cancelled at shutdown
535	dl	1.5	*/
536			public void testShutDown2() {
537	dl	1.2	try {
538	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
539			p1.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
540	dl	1.2	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
541			for(int i = 0; i < 5; i++)
542	dl	1.5	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
543			p1.shutdown();
544			assertTrue(p1.isShutdown());
545			BlockingQueue q = p1.getQueue();
546	dl	1.2	assertTrue(q.isEmpty());
547	dl	1.4	Thread.sleep(SMALL_DELAY_MS);
548	dl	1.5	assertTrue(p1.isTerminated());
549	dl	1.2	}
550			catch(Exception ex) {
551	dl	1.5	unexpectedException();
552	dl	1.2	}
553			}
554
555
556	dl	1.5	/**
557	dl	1.6	* If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false,
558			* periodic tasks are not cancelled at shutdown
559	dl	1.5	*/
560			public void testShutDown3() {
561	dl	1.2	try {
562	dl	1.5	ScheduledExecutor p1 = new ScheduledExecutor(1);
563			p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
564	dl	1.2	ScheduledCancellable task =
565	dl	1.5	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
566			p1.shutdown();
567			assertTrue(p1.isShutdown());
568			BlockingQueue q = p1.getQueue();
569	dl	1.2	assertTrue(q.isEmpty());
570			Thread.sleep(SHORT_DELAY_MS);
571	dl	1.5	assertTrue(p1.isTerminated());
572	dl	1.2	}
573			catch(Exception ex) {
574	dl	1.5	unexpectedException();
575	dl	1.2	}
576			}
577
578	dl	1.5	/**
579	dl	1.6	* if setContinueExistingPeriodicTasksAfterShutdownPolicy is true,
580			* periodic tasks are cancelled at shutdown
581	dl	1.5	*/
582			public void testShutDown4() {
583			ScheduledExecutor p1 = new ScheduledExecutor(1);
584	dl	1.2	try {
585	dl	1.5	p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
586	dl	1.2	ScheduledCancellable task =
587	dl	1.5	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
588	dl	1.2	assertFalse(task.isCancelled());
589	dl	1.5	p1.shutdown();
590	dl	1.2	assertFalse(task.isCancelled());
591	dl	1.5	assertFalse(p1.isTerminated());
592			assertTrue(p1.isShutdown());
593	dl	1.2	Thread.sleep(SHORT_DELAY_MS);
594			assertFalse(task.isCancelled());
595			task.cancel(true);
596			assertTrue(task.isCancelled());
597			Thread.sleep(SHORT_DELAY_MS);
598	dl	1.5	assertTrue(p1.isTerminated());
599	dl	1.2	}
600			catch(Exception ex) {
601	dl	1.5	unexpectedException();
602	dl	1.2	}
603			finally {
604	dl	1.5	p1.shutdownNow();
605	dl	1.2	}
606	dl	1.1	}
607
608			}