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Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.2 by dl, Sun Sep 7 23:50:09 2003 UTC vs.
Revision 1.28 by jsr166, Tue Dec 1 09:48:12 2009 UTC

# Line 1 | Line 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.
2 > * Written by Doug Lea with assistance from members of JCP JSR-166
3 > * Expert Group and released to the public domain, as explained at
4 > * http://creativecommons.org/licenses/publicdomain
5 > * Other contributors include Andrew Wright, Jeffrey Hayes,
6 > * Pat Fisher, Mike Judd.
7   */
8  
9   import junit.framework.*;
10   import java.util.*;
11   import java.util.concurrent.*;
12 + import static java.util.concurrent.TimeUnit.MILLISECONDS;
13 + import java.util.concurrent.atomic.*;
14  
15 < public class ScheduledExecutorTest extends TestCase{
13 <    
14 <    boolean flag = false;
15 <
15 > public class ScheduledExecutorTest extends JSR166TestCase {
16      public static void main(String[] args) {
17 <        junit.textui.TestRunner.run (suite());  
17 >        junit.textui.TestRunner.run (suite());
18      }
19    
20
19      public static Test suite() {
20 <        return new TestSuite(ScheduledExecutorTest.class);
20 >        return new TestSuite(ScheduledExecutorTest.class);
21      }
22  
23 <    private static long SHORT_DELAY_MS = 100;
24 <    private static long MEDIUM_DELAY_MS = 1000;
25 <    private static long LONG_DELAY_MS = 10000;
26 <
27 <    static class MyRunnable implements Runnable {
28 <        volatile boolean waiting = true;
29 <        volatile boolean done = false;
30 <        public void run(){
31 <            try{
32 <                Thread.sleep(SHORT_DELAY_MS);
33 <                waiting = false;
34 <                done = true;
35 <            } catch(Exception e){
36 <            }
37 <        }
23 >
24 >    /**
25 >     * execute successfully executes a runnable
26 >     */
27 >    public void testExecute() throws InterruptedException {
28 >        TrackedShortRunnable runnable =new TrackedShortRunnable();
29 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
30 >        p1.execute(runnable);
31 >        assertFalse(runnable.done);
32 >        Thread.sleep(SHORT_DELAY_MS);
33 >        try { p1.shutdown(); } catch (SecurityException ok) { return; }
34 >        Thread.sleep(MEDIUM_DELAY_MS);
35 >        assertTrue(runnable.done);
36 >        try { p1.shutdown(); } catch (SecurityException ok) { return; }
37 >        joinPool(p1);
38      }
39  
40 <    static class MyCallable implements Callable {
41 <        volatile boolean waiting = true;
42 <        volatile boolean done = false;
43 <        public Object call(){
44 <            try{
45 <                Thread.sleep(SHORT_DELAY_MS);
46 <                waiting = false;
47 <                done = true;
48 <            }catch(Exception e){}
49 <            return Boolean.TRUE;
50 <        }
40 >
41 >    /**
42 >     * delayed schedule of callable successfully executes after delay
43 >     */
44 >    public void testSchedule1() throws Exception {
45 >        TrackedCallable callable = new TrackedCallable();
46 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
47 >        Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
48 >        assertFalse(callable.done);
49 >        Thread.sleep(MEDIUM_DELAY_MS);
50 >        assertTrue(callable.done);
51 >        assertEquals(Boolean.TRUE, f.get());
52 >        try { p1.shutdown(); } catch (SecurityException ok) { return; }
53 >        joinPool(p1);
54      }
55  
56 <    public Runnable newRunnable(){
57 <        return new Runnable(){
58 <                public void run(){
59 <                    try{Thread.sleep(SHORT_DELAY_MS);
60 <                    } catch(Exception e){
61 <                    }
62 <                }
63 <            };
64 <    }
65 <
66 <    public Runnable newNoopRunnable() {
67 <        return new Runnable(){
68 <                public void run(){
68 <                }
69 <            };
56 >    /**
57 >     *  delayed schedule of runnable successfully executes after delay
58 >     */
59 >    public void testSchedule3() throws InterruptedException {
60 >        TrackedShortRunnable runnable = new TrackedShortRunnable();
61 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
62 >        p1.schedule(runnable, SMALL_DELAY_MS, MILLISECONDS);
63 >        Thread.sleep(SHORT_DELAY_MS);
64 >        assertFalse(runnable.done);
65 >        Thread.sleep(MEDIUM_DELAY_MS);
66 >        assertTrue(runnable.done);
67 >        try { p1.shutdown(); } catch (SecurityException ok) { return; }
68 >        joinPool(p1);
69      }
70  
71      /**
72 <     *  Test to verify execute successfully runs the given Runnable
73 <     */
74 <    public void testExecute(){
75 <        try{
76 <            MyRunnable runnable =new MyRunnable();
77 <            ScheduledExecutor one = new ScheduledExecutor(1);
78 <            one.execute(runnable);
79 <            Thread.sleep(SHORT_DELAY_MS/2);
80 <            assertTrue(runnable.waiting);
81 <            one.shutdown();
82 <            try{
83 <                Thread.sleep(MEDIUM_DELAY_MS);
84 <            } catch(InterruptedException e){
85 <                fail("unexpected exception");
86 <            }
87 <            assertFalse(runnable.waiting);
89 <            assertTrue(runnable.done);
90 <            one.shutdown();
91 <        }
92 <        catch(Exception e){
93 <            fail("unexpected exception");
94 <        }
72 >     * scheduleAtFixedRate executes runnable after given initial delay
73 >     */
74 >    public void testSchedule4() throws InterruptedException {
75 >        TrackedShortRunnable runnable = new TrackedShortRunnable();
76 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
77 >        ScheduledFuture h = p1.scheduleAtFixedRate(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, MILLISECONDS);
78 >        assertFalse(runnable.done);
79 >        Thread.sleep(MEDIUM_DELAY_MS);
80 >        assertTrue(runnable.done);
81 >        h.cancel(true);
82 >        joinPool(p1);
83 >    }
84 >
85 >    static class RunnableCounter implements Runnable {
86 >        AtomicInteger count = new AtomicInteger(0);
87 >        public void run() { count.getAndIncrement(); }
88      }
89  
90      /**
91 <     *  Test to verify schedule successfully runs the given Callable.
99 <     *  The waiting flag shows that the Callable is not started until
100 <     *  immediately.
91 >     * scheduleWithFixedDelay executes runnable after given initial delay
92       */
93 <    public void testSchedule1(){
94 <        try{
95 <            MyCallable callable = new MyCallable();
96 <            ScheduledExecutor one = new ScheduledExecutor(1);
97 <            Future f = one.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
98 <            assertTrue(callable.waiting);
99 <            Thread.sleep(MEDIUM_DELAY_MS);
100 <            assertTrue(callable.done);
101 <            assertEquals(Boolean.TRUE, f.get());
111 <            one.shutdown();
112 <        }catch(RejectedExecutionException e){}
113 <        catch(Exception e){
114 <            fail("unexpected exception");
115 <        }
93 >    public void testSchedule5() throws InterruptedException {
94 >        TrackedShortRunnable runnable = new TrackedShortRunnable();
95 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
96 >        ScheduledFuture h = p1.scheduleWithFixedDelay(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, MILLISECONDS);
97 >        assertFalse(runnable.done);
98 >        Thread.sleep(MEDIUM_DELAY_MS);
99 >        assertTrue(runnable.done);
100 >        h.cancel(true);
101 >        joinPool(p1);
102      }
103  
104      /**
105 <     *  Another version of schedule, only using Runnable instead of Callable
105 >     * scheduleAtFixedRate executes series of tasks at given rate
106       */
107 <    public void testSchedule3(){
108 <        try{
109 <            MyRunnable runnable = new MyRunnable();
110 <            ScheduledExecutor one = new ScheduledExecutor(1);
111 <            one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
112 <            Thread.sleep(SHORT_DELAY_MS/2);
113 <            assertTrue(runnable.waiting);
114 <            Thread.sleep(MEDIUM_DELAY_MS);
115 <            assertTrue(runnable.done);
116 <            one.shutdown();
117 <        } catch(Exception e){
118 <            fail("unexpected exception");
119 <        }
107 >    public void testFixedRateSequence() throws InterruptedException {
108 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
109 >        RunnableCounter counter = new RunnableCounter();
110 >        ScheduledFuture h =
111 >            p1.scheduleAtFixedRate(counter, 0, 1, MILLISECONDS);
112 >        Thread.sleep(SMALL_DELAY_MS);
113 >        h.cancel(true);
114 >        int c = counter.count.get();
115 >        // By time scaling conventions, we must have at least
116 >        // an execution per SHORT delay, but no more than one SHORT more
117 >        assertTrue(c >= SMALL_DELAY_MS / SHORT_DELAY_MS);
118 >        assertTrue(c <= SMALL_DELAY_MS + SHORT_DELAY_MS);
119 >        joinPool(p1);
120      }
121 <    
121 >
122      /**
123 <     *  The final version of schedule, using both long, TimeUnit and Runnable
123 >     * scheduleWithFixedDelay executes series of tasks with given period
124       */
125 <    public void testSchedule4(){
126 <        try{
127 <            MyRunnable runnable = new MyRunnable();
128 <            ScheduledExecutor one = new ScheduledExecutor(1);
129 <            one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
130 <            //      Thread.sleep(505);
131 <            assertTrue(runnable.waiting);
132 <            Thread.sleep(MEDIUM_DELAY_MS);
133 <            assertTrue(runnable.done);
134 <            one.shutdown();
135 <        } catch(Exception e){
150 <            fail("unexpected exception");
151 <        }
125 >    public void testFixedDelaySequence() throws InterruptedException {
126 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
127 >        RunnableCounter counter = new RunnableCounter();
128 >        ScheduledFuture h =
129 >            p1.scheduleWithFixedDelay(counter, 0, 1, MILLISECONDS);
130 >        Thread.sleep(SMALL_DELAY_MS);
131 >        h.cancel(true);
132 >        int c = counter.count.get();
133 >        assertTrue(c >= SMALL_DELAY_MS / SHORT_DELAY_MS);
134 >        assertTrue(c <= SMALL_DELAY_MS + SHORT_DELAY_MS);
135 >        joinPool(p1);
136      }
137 <    
154 <  
155 <    // exception tests
137 >
138  
139      /**
140 <     *  Test to verify schedule(Runnable, long) throws RejectedExecutionException
159 <     *  This occurs on an attempt to schedule a task on a shutdown executor
140 >     *  execute (null) throws NPE
141       */
142 <    public void testSchedule1_RejectedExecutionException(){
143 <        try{
144 <            ScheduledExecutor se = new ScheduledExecutor(1);
145 <            se.shutdown();
146 <            se.schedule(new Runnable(){
147 <                    public void run(){}
148 <                }, 10000, TimeUnit.MILLISECONDS);
149 <            fail("shoud throw");
150 <        }catch(RejectedExecutionException e){}    
142 >    public void testExecuteNull() throws InterruptedException {
143 >        ScheduledThreadPoolExecutor se = null;
144 >        try {
145 >            se = new ScheduledThreadPoolExecutor(1);
146 >            se.execute(null);
147 >            shouldThrow();
148 >        } catch (NullPointerException success) {}
149 >
150 >        joinPool(se);
151      }
152  
153      /**
154 <     *  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
174 <     *  This occurs on an attempt to schedule a task on a shutdown executor
154 >     * schedule (null) throws NPE
155       */
156 <    public void testSchedule2_RejectedExecutionException(){
157 <        try{
158 <            ScheduledExecutor se = new ScheduledExecutor(1);
159 <            se.shutdown();
160 <            se.schedule(new Callable(){
161 <                    public Object call(){
162 <                        return Boolean.TRUE;
163 <                    }
184 <                }, (long)100, TimeUnit.SECONDS);
185 <            fail("should throw");
186 <        }catch(RejectedExecutionException e){}    
156 >    public void testScheduleNull() throws InterruptedException {
157 >        ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
158 >        try {
159 >            TrackedCallable callable = null;
160 >            Future f = se.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
161 >            shouldThrow();
162 >        } catch (NullPointerException success) {}
163 >        joinPool(se);
164      }
165  
166      /**
167 <     *  Test to verify schedule(Callable, long) throws RejectedExecutionException
168 <     *  This occurs on an attempt to schedule a task on a shutdown executor
169 <     */
170 <     public void testSchedule3_RejectedExecutionException(){
171 <        try{
195 <            ScheduledExecutor se = new ScheduledExecutor(1);
167 >     * execute throws RejectedExecutionException if shutdown
168 >     */
169 >    public void testSchedule1_RejectedExecutionException() throws InterruptedException {
170 >        ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
171 >        try {
172              se.shutdown();
173 <            se.schedule(new Callable(){
174 <                    public Object call(){
175 <                        return Boolean.TRUE;
176 <                    }
177 <                },  10000, TimeUnit.MILLISECONDS);
178 <            fail("should throw");
179 <        }catch(RejectedExecutionException e){}    
173 >            se.schedule(new NoOpRunnable(),
174 >                        MEDIUM_DELAY_MS, MILLISECONDS);
175 >            shouldThrow();
176 >        } catch (RejectedExecutionException success) {
177 >        } catch (SecurityException ok) {
178 >        }
179 >
180 >        joinPool(se);
181      }
182  
183      /**
184 <     *  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
185 <     *  RejectedExecutionException.
186 <     *  This occurs on an attempt to schedule a task on a shutdown executor
187 <     */
188 <    public void testScheduleAtFixedRate1_RejectedExecutionException(){
212 <        try{
213 <            ScheduledExecutor se = new ScheduledExecutor(1);
214 <            se.shutdown();
215 <            se.scheduleAtFixedRate(new Runnable(){
216 <                    public void run(){}
217 <                }, 100, 100, TimeUnit.SECONDS);
218 <            fail("should throw");
219 <        }catch(RejectedExecutionException e){}    
220 <    }
221 <    
222 <    /**
223 <     *  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
224 <     *  RejectedExecutionException.
225 <     *  This occurs on an attempt to schedule a task on a shutdown executor
226 <     */
227 <    public void testScheduleAtFixedRate2_RejectedExecutionException(){
228 <        try{
229 <            ScheduledExecutor se = new ScheduledExecutor(1);
184 >     * schedule throws RejectedExecutionException if shutdown
185 >     */
186 >    public void testSchedule2_RejectedExecutionException() throws InterruptedException {
187 >        ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
188 >        try {
189              se.shutdown();
190 <            se.scheduleAtFixedRate(new Runnable(){
191 <                    public void run(){}
192 <                },  1, 100, TimeUnit.SECONDS);
193 <            fail("should throw");
194 <        }catch(RejectedExecutionException e){}    
190 >            se.schedule(new NoOpCallable(),
191 >                        MEDIUM_DELAY_MS, MILLISECONDS);
192 >            shouldThrow();
193 >        } catch (RejectedExecutionException success) {
194 >        } catch (SecurityException ok) {
195 >        }
196 >        joinPool(se);
197      }
198  
199      /**
200 <     *  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
240 <     *  RejectedExecutionException.
241 <     *  This occurs on an attempt to schedule a task on a shutdown executor
200 >     * schedule callable throws RejectedExecutionException if shutdown
201       */
202 <    public void testScheduleWithFixedDelay1_RejectedExecutionException(){
203 <        try{
204 <            ScheduledExecutor se = new ScheduledExecutor(1);
202 >     public void testSchedule3_RejectedExecutionException() throws InterruptedException {
203 >         ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
204 >         try {
205              se.shutdown();
206 <            se.scheduleWithFixedDelay(new Runnable(){
207 <                    public void run(){}
208 <                }, 100, 100, TimeUnit.SECONDS);
209 <            fail("should throw");
210 <        }catch(RejectedExecutionException e){}    
206 >            se.schedule(new NoOpCallable(),
207 >                        MEDIUM_DELAY_MS, MILLISECONDS);
208 >            shouldThrow();
209 >        } catch (RejectedExecutionException success) {
210 >        } catch (SecurityException ok) {
211 >        }
212 >         joinPool(se);
213      }
214  
215      /**
216 <     *  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
256 <     *  RejectedExecutionException.
257 <     *  This occurs on an attempt to schedule a task on a shutdown executor
216 >     *  scheduleAtFixedRate throws RejectedExecutionException if shutdown
217       */
218 <     public void testScheduleWithFixedDelay2_RejectedExecutionException(){
219 <        try{
220 <            ScheduledExecutor se = new ScheduledExecutor(1);
218 >    public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
219 >        ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
220 >        try {
221              se.shutdown();
222 <            se.scheduleWithFixedDelay(new Runnable(){
223 <                    public void run(){}
224 <                },  1, 100, TimeUnit.SECONDS);
225 <            fail("should throw");
226 <        }catch(RejectedExecutionException e){}    
222 >            se.scheduleAtFixedRate(new NoOpRunnable(),
223 >                                   MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
224 >            shouldThrow();
225 >        } catch (RejectedExecutionException success) {
226 >        } catch (SecurityException ok) {
227 >        }
228 >        joinPool(se);
229      }
230  
231      /**
232 <     *  Test to verify execute throws RejectedExecutionException
272 <     *  This occurs on an attempt to schedule a task on a shutdown executor
232 >     * scheduleWithFixedDelay throws RejectedExecutionException if shutdown
233       */
234 <    public void testExecute_RejectedExecutionException(){
235 <        try{
236 <            ScheduledExecutor se = new ScheduledExecutor(1);
234 >    public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
235 >        ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
236 >        try {
237              se.shutdown();
238 <            se.execute(new Runnable(){
239 <                    public void run(){}
240 <                });
241 <            fail("should throw");
242 <        }catch(RejectedExecutionException e){}    
238 >            se.scheduleWithFixedDelay(new NoOpRunnable(),
239 >                                      MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
240 >            shouldThrow();
241 >        } catch (RejectedExecutionException success) {
242 >        } catch (SecurityException ok) {
243 >        }
244 >        joinPool(se);
245 >    }
246 >
247 >    /**
248 >     *  getActiveCount increases but doesn't overestimate, when a
249 >     *  thread becomes active
250 >     */
251 >    public void testGetActiveCount() throws InterruptedException {
252 >        ScheduledThreadPoolExecutor p2 = new ScheduledThreadPoolExecutor(2);
253 >        assertEquals(0, p2.getActiveCount());
254 >        p2.execute(new SmallRunnable());
255 >        Thread.sleep(SHORT_DELAY_MS);
256 >        assertEquals(1, p2.getActiveCount());
257 >        joinPool(p2);
258 >    }
259 >
260 >    /**
261 >     *    getCompletedTaskCount increases, but doesn't overestimate,
262 >     *   when tasks complete
263 >     */
264 >    public void testGetCompletedTaskCount() throws InterruptedException {
265 >        ScheduledThreadPoolExecutor p2 = new ScheduledThreadPoolExecutor(2);
266 >        assertEquals(0, p2.getCompletedTaskCount());
267 >        p2.execute(new SmallRunnable());
268 >        Thread.sleep(MEDIUM_DELAY_MS);
269 >        assertEquals(1, p2.getCompletedTaskCount());
270 >        joinPool(p2);
271 >    }
272 >
273 >    /**
274 >     *  getCorePoolSize returns size given in constructor if not otherwise set
275 >     */
276 >    public void testGetCorePoolSize() throws InterruptedException {
277 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
278 >        assertEquals(1, p1.getCorePoolSize());
279 >        joinPool(p1);
280      }
281  
282 +    /**
283 +     *    getLargestPoolSize increases, but doesn't overestimate, when
284 +     *   multiple threads active
285 +     */
286 +    public void testGetLargestPoolSize() throws InterruptedException {
287 +        ScheduledThreadPoolExecutor p2 = new ScheduledThreadPoolExecutor(2);
288 +        assertEquals(0, p2.getLargestPoolSize());
289 +        p2.execute(new SmallRunnable());
290 +        p2.execute(new SmallRunnable());
291 +        Thread.sleep(SHORT_DELAY_MS);
292 +        assertEquals(2, p2.getLargestPoolSize());
293 +        joinPool(p2);
294 +    }
295 +
296 +    /**
297 +     *   getPoolSize increases, but doesn't overestimate, when threads
298 +     *   become active
299 +     */
300 +    public void testGetPoolSize() throws InterruptedException {
301 +        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
302 +        assertEquals(0, p1.getPoolSize());
303 +        p1.execute(new SmallRunnable());
304 +        assertEquals(1, p1.getPoolSize());
305 +        joinPool(p1);
306 +    }
307 +
308 +    /**
309 +     *    getTaskCount increases, but doesn't overestimate, when tasks
310 +     *    submitted
311 +     */
312 +    public void testGetTaskCount() throws InterruptedException {
313 +        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
314 +        assertEquals(0, p1.getTaskCount());
315 +        for (int i = 0; i < 5; i++)
316 +            p1.execute(new SmallRunnable());
317 +        Thread.sleep(SHORT_DELAY_MS);
318 +        assertEquals(5, p1.getTaskCount());
319 +        joinPool(p1);
320 +    }
321  
322 +    /**
323 +     * getThreadFactory returns factory in constructor if not set
324 +     */
325 +    public void testGetThreadFactory() throws InterruptedException {
326 +        ThreadFactory tf = new SimpleThreadFactory();
327 +        ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1, tf);
328 +        assertSame(tf, p.getThreadFactory());
329 +        joinPool(p);
330 +    }
331 +
332 +    /**
333 +     * setThreadFactory sets the thread factory returned by getThreadFactory
334 +     */
335 +    public void testSetThreadFactory() throws InterruptedException {
336 +        ThreadFactory tf = new SimpleThreadFactory();
337 +        ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
338 +        p.setThreadFactory(tf);
339 +        assertSame(tf, p.getThreadFactory());
340 +        joinPool(p);
341 +    }
342  
343      /**
344 <     *  Test to verify getActiveCount gives correct values
344 >     * setThreadFactory(null) throws NPE
345       */
346 <    public void testGetActiveCount(){
347 <        ScheduledExecutor two = new ScheduledExecutor(2);
346 >    public void testSetThreadFactoryNull() throws InterruptedException {
347 >        ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
348          try {
349 <            assertEquals(0, two.getActiveCount());
350 <            two.execute(newRunnable());
351 <            try{
296 <                Thread.sleep(SHORT_DELAY_MS/2);
297 <            } catch(Exception e){
298 <                fail("unexpected exception");
299 <            }
300 <            assertEquals(1, two.getActiveCount());
349 >            p.setThreadFactory(null);
350 >            shouldThrow();
351 >        } catch (NullPointerException success) {
352          } finally {
353 <            two.shutdown();
353 >            joinPool(p);
354          }
355      }
356 <    
356 >
357      /**
358 <     *  Test to verify getCompleteTaskCount gives correct values
358 >     *   is isShutDown is false before shutdown, true after
359       */
360 <    public void testGetCompletedTaskCount(){
361 <        ScheduledExecutor two = new ScheduledExecutor(2);
360 >    public void testIsShutdown() {
361 >
362 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
363          try {
364 <            assertEquals(0, two.getCompletedTaskCount());
365 <            two.execute(newRunnable());
366 <            try{
367 <                Thread.sleep(MEDIUM_DELAY_MS);
368 <            } catch(Exception e){
369 <                fail("unexpected exception");
370 <            }
371 <            assertEquals(1, two.getCompletedTaskCount());
364 >            assertFalse(p1.isShutdown());
365 >        }
366 >        finally {
367 >            try { p1.shutdown(); } catch (SecurityException ok) { return; }
368 >        }
369 >        assertTrue(p1.isShutdown());
370 >    }
371 >
372 >
373 >    /**
374 >     *   isTerminated is false before termination, true after
375 >     */
376 >    public void testIsTerminated() throws InterruptedException {
377 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
378 >        try {
379 >            p1.execute(new SmallRunnable());
380          } finally {
381 <            two.shutdown();
381 >            try { p1.shutdown(); } catch (SecurityException ok) { return; }
382          }
383 +        assertTrue(p1.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
384 +        assertTrue(p1.isTerminated());
385      }
386 <    
386 >
387      /**
388 <     *  Test to verify getCorePoolSize gives correct values
388 >     *  isTerminating is not true when running or when terminated
389       */
390 <    public void testGetCorePoolSize(){
391 <        ScheduledExecutor one = new ScheduledExecutor(1);
390 >    public void testIsTerminating() throws InterruptedException {
391 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
392 >        assertFalse(p1.isTerminating());
393          try {
394 <            assertEquals(1, one.getCorePoolSize());
394 >            p1.execute(new SmallRunnable());
395 >            assertFalse(p1.isTerminating());
396          } finally {
397 <            one.shutdown();
397 >            try { p1.shutdown(); } catch (SecurityException ok) { return; }
398          }
399 +
400 +        assertTrue(p1.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
401 +        assertTrue(p1.isTerminated());
402 +        assertFalse(p1.isTerminating());
403      }
404 <    
404 >
405      /**
406 <     *  Test to verify getLargestPoolSize gives correct values
406 >     * getQueue returns the work queue, which contains queued tasks
407       */
408 <    public void testGetLargestPoolSize(){
409 <        ScheduledExecutor two = new ScheduledExecutor(2);
408 >    public void testGetQueue() throws InterruptedException {
409 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
410 >        ScheduledFuture[] tasks = new ScheduledFuture[5];
411 >        for (int i = 0; i < 5; i++) {
412 >            tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), 1, MILLISECONDS);
413 >        }
414          try {
415 <            assertEquals(0, two.getLargestPoolSize());
416 <            two.execute(newRunnable());
417 <            two.execute(newRunnable());
418 <            try{
347 <                Thread.sleep(SHORT_DELAY_MS);
348 <            } catch(Exception e){
349 <                fail("unexpected exception");
350 <            }
351 <            assertEquals(2, two.getLargestPoolSize());
415 >            Thread.sleep(SHORT_DELAY_MS);
416 >            BlockingQueue<Runnable> q = p1.getQueue();
417 >            assertTrue(q.contains(tasks[4]));
418 >            assertFalse(q.contains(tasks[0]));
419          } finally {
420 <            two.shutdown();
420 >            joinPool(p1);
421          }
422      }
423 <    
423 >
424      /**
425 <     *  Test to verify getPoolSize gives correct values
425 >     * remove(task) removes queued task, and fails to remove active task
426       */
427 <    public void testGetPoolSize(){
428 <        ScheduledExecutor one = new ScheduledExecutor(1);
429 <        try {
430 <            assertEquals(0, one.getPoolSize());
431 <            one.execute(newRunnable());
432 <            assertEquals(1, one.getPoolSize());
427 >    public void testRemove() throws InterruptedException {
428 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
429 >        ScheduledFuture[] tasks = new ScheduledFuture[5];
430 >        for (int i = 0; i < 5; i++) {
431 >            tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), 1, MILLISECONDS);
432 >        }
433 >        try {
434 >            Thread.sleep(SHORT_DELAY_MS);
435 >            BlockingQueue<Runnable> q = p1.getQueue();
436 >            assertFalse(p1.remove((Runnable)tasks[0]));
437 >            assertTrue(q.contains((Runnable)tasks[4]));
438 >            assertTrue(q.contains((Runnable)tasks[3]));
439 >            assertTrue(p1.remove((Runnable)tasks[4]));
440 >            assertFalse(p1.remove((Runnable)tasks[4]));
441 >            assertFalse(q.contains((Runnable)tasks[4]));
442 >            assertTrue(q.contains((Runnable)tasks[3]));
443 >            assertTrue(p1.remove((Runnable)tasks[3]));
444 >            assertFalse(q.contains((Runnable)tasks[3]));
445          } finally {
446 <            one.shutdown();
446 >            joinPool(p1);
447          }
448      }
449 <    
449 >
450      /**
451 <     *  Test to verify getTaskCount gives correct values
451 >     *  purge removes cancelled tasks from the queue
452       */
453 <    public void testGetTaskCount(){
454 <        ScheduledExecutor one = new ScheduledExecutor(1);
453 >    public void testPurge() throws InterruptedException {
454 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
455 >        ScheduledFuture[] tasks = new ScheduledFuture[5];
456 >        for (int i = 0; i < 5; i++) {
457 >            tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), SHORT_DELAY_MS, MILLISECONDS);
458 >        }
459          try {
460 <            assertEquals(0, one.getTaskCount());
461 <            for(int i = 0; i < 5; i++)
462 <                one.execute(newRunnable());
463 <            try{
464 <                Thread.sleep(SHORT_DELAY_MS);
465 <            } catch(Exception e){
466 <                fail("unexpected exception");
460 >            int max = 5;
461 >            if (tasks[4].cancel(true)) --max;
462 >            if (tasks[3].cancel(true)) --max;
463 >            // There must eventually be an interference-free point at
464 >            // which purge will not fail. (At worst, when queue is empty.)
465 >            int k;
466 >            for (k = 0; k < SMALL_DELAY_MS; ++k) {
467 >                p1.purge();
468 >                long count = p1.getTaskCount();
469 >                if (count >= 0 && count <= max)
470 >                    break;
471 >                Thread.sleep(1);
472              }
473 <            assertEquals(5, one.getTaskCount());
473 >            assertTrue(k < SMALL_DELAY_MS);
474          } finally {
475 <            one.shutdown();
475 >            joinPool(p1);
476          }
477      }
478 <    
478 >
479      /**
480 <     *  Test to verify isShutDown gives correct values
480 >     *  shutDownNow returns a list containing tasks that were not run
481       */
482 <    public void testIsShutdown(){
483 <        
484 <        ScheduledExecutor one = new ScheduledExecutor(1);
482 >    public void testShutDownNow() throws InterruptedException {
483 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
484 >        for (int i = 0; i < 5; i++)
485 >            p1.schedule(new SmallPossiblyInterruptedRunnable(), SHORT_DELAY_MS, MILLISECONDS);
486 >        List l;
487          try {
488 <            assertFalse(one.isShutdown());
488 >            l = p1.shutdownNow();
489 >        } catch (SecurityException ok) {
490 >            return;
491 >        }
492 >        assertTrue(p1.isShutdown());
493 >        assertTrue(l.size() > 0 && l.size() <= 5);
494 >        joinPool(p1);
495 >    }
496 >
497 >    /**
498 >     * In default setting, shutdown cancels periodic but not delayed
499 >     * tasks at shutdown
500 >     */
501 >    public void testShutDown1() throws InterruptedException {
502 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
503 >        assertTrue(p1.getExecuteExistingDelayedTasksAfterShutdownPolicy());
504 >        assertFalse(p1.getContinueExistingPeriodicTasksAfterShutdownPolicy());
505 >
506 >        ScheduledFuture[] tasks = new ScheduledFuture[5];
507 >        for (int i = 0; i < 5; i++)
508 >            tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, MILLISECONDS);
509 >        try { p1.shutdown(); } catch (SecurityException ok) { return; }
510 >        BlockingQueue q = p1.getQueue();
511 >        for (Iterator it = q.iterator(); it.hasNext();) {
512 >            ScheduledFuture t = (ScheduledFuture)it.next();
513 >            assertFalse(t.isCancelled());
514 >        }
515 >        assertTrue(p1.isShutdown());
516 >        Thread.sleep(SMALL_DELAY_MS);
517 >        for (int i = 0; i < 5; ++i) {
518 >            assertTrue(tasks[i].isDone());
519 >            assertFalse(tasks[i].isCancelled());
520 >        }
521 >    }
522 >
523 >
524 >    /**
525 >     * If setExecuteExistingDelayedTasksAfterShutdownPolicy is false,
526 >     * delayed tasks are cancelled at shutdown
527 >     */
528 >    public void testShutDown2() throws InterruptedException {
529 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
530 >        p1.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
531 >        ScheduledFuture[] tasks = new ScheduledFuture[5];
532 >        for (int i = 0; i < 5; i++)
533 >            tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, MILLISECONDS);
534 >        try { p1.shutdown(); } catch (SecurityException ok) { return; }
535 >        assertTrue(p1.isShutdown());
536 >        BlockingQueue q = p1.getQueue();
537 >        assertTrue(q.isEmpty());
538 >        Thread.sleep(SMALL_DELAY_MS);
539 >        assertTrue(p1.isTerminated());
540 >    }
541 >
542 >
543 >    /**
544 >     * If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false,
545 >     * periodic tasks are not cancelled at shutdown
546 >     */
547 >    public void testShutDown3() throws InterruptedException {
548 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
549 >        p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
550 >        ScheduledFuture task =
551 >            p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, MILLISECONDS);
552 >        try { p1.shutdown(); } catch (SecurityException ok) { return; }
553 >        assertTrue(p1.isShutdown());
554 >        BlockingQueue q = p1.getQueue();
555 >        assertTrue(q.isEmpty());
556 >        Thread.sleep(SHORT_DELAY_MS);
557 >        assertTrue(p1.isTerminated());
558 >    }
559 >
560 >    /**
561 >     * if setContinueExistingPeriodicTasksAfterShutdownPolicy is true,
562 >     * periodic tasks are cancelled at shutdown
563 >     */
564 >    public void testShutDown4() throws InterruptedException {
565 >        ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
566 >        try {
567 >            p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
568 >            ScheduledFuture task =
569 >                p1.scheduleAtFixedRate(new NoOpRunnable(), 1, 1, MILLISECONDS);
570 >            assertFalse(task.isCancelled());
571 >            try { p1.shutdown(); } catch (SecurityException ok) { return; }
572 >            assertFalse(task.isCancelled());
573 >            assertFalse(p1.isTerminated());
574 >            assertTrue(p1.isShutdown());
575 >            Thread.sleep(SHORT_DELAY_MS);
576 >            assertFalse(task.isCancelled());
577 >            assertTrue(task.cancel(true));
578 >            assertTrue(task.isDone());
579 >            Thread.sleep(SHORT_DELAY_MS);
580 >            assertTrue(p1.isTerminated());
581          }
582          finally {
583 <            one.shutdown();
583 >            joinPool(p1);
584          }
403        assertTrue(one.isShutdown());
585      }
586  
406        
587      /**
588 <     *  Test to verify isTerminated gives correct values
409 <     *  Makes sure termination does not take an innapropriate
410 <     *  amount of time
588 >     * completed submit of callable returns result
589       */
590 <    public void testIsTerminated(){
591 <        ScheduledExecutor one = new ScheduledExecutor(1);
590 >    public void testSubmitCallable() throws Exception {
591 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
592          try {
593 <            one.execute(newRunnable());
593 >            Future<String> future = e.submit(new StringTask());
594 >            String result = future.get();
595 >            assertSame(TEST_STRING, result);
596          } finally {
597 <            one.shutdown();
597 >            joinPool(e);
598          }
419        boolean flag = false;
420        try{
421            flag = one.awaitTermination(10, TimeUnit.SECONDS);
422        } catch(Exception e){
423            fail("unexpected exception");
424        }      
425        assertTrue(one.isTerminated());
426        if(!flag)
427            fail("ThreadPoolExecutor - thread pool did not terminate within suitable timeframe");
599      }
600  
601      /**
602 <     *  Test to verify that purge correctly removes cancelled tasks
432 <     *  from the queue
602 >     * completed submit of runnable returns successfully
603       */
604 <    public void testPurge(){
605 <        ScheduledExecutor one = new ScheduledExecutor(1);
604 >    public void testSubmitRunnable() throws Exception {
605 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
606          try {
607 <            ScheduledCancellable[] tasks = new ScheduledCancellable[5];
608 <            for(int i = 0; i < 5; i++){
609 <                tasks[i] = one.schedule(newRunnable(), 1, TimeUnit.MILLISECONDS);
440 <            }
441 <            int max = 5;
442 <            if (tasks[4].cancel(true)) --max;
443 <            if (tasks[3].cancel(true)) --max;
444 <            one.purge();
445 <            long count = one.getTaskCount();
446 <            assertTrue(count > 0 && count <= max);
607 >            Future<?> future = e.submit(new NoOpRunnable());
608 >            future.get();
609 >            assertTrue(future.isDone());
610          } finally {
611 <            one.shutdown();
611 >            joinPool(e);
612          }
613      }
614  
615      /**
616 <     *  Test to verify shutDownNow returns a list
454 <     *  containing the correct number of elements
616 >     * completed submit of (runnable, result) returns result
617       */
618 <    public void testShutDownNow(){
619 <        ScheduledExecutor one = new ScheduledExecutor(1);
620 <        for(int i = 0; i < 5; i++)
621 <            one.schedule(newRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
622 <        List l = one.shutdownNow();
623 <        assertTrue(one.isShutdown());
624 <        assertTrue(l.size() > 0 && l.size() <= 5);
618 >    public void testSubmitRunnable2() throws Exception {
619 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
620 >        try {
621 >            Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
622 >            String result = future.get();
623 >            assertSame(TEST_STRING, result);
624 >        } finally {
625 >            joinPool(e);
626 >        }
627      }
628  
629 <    public void testShutDown1(){
629 >    /**
630 >     * invokeAny(null) throws NPE
631 >     */
632 >    public void testInvokeAny1() throws Exception {
633 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
634          try {
635 <            ScheduledExecutor one = new ScheduledExecutor(1);
636 <            assertTrue(one.getExecuteExistingDelayedTasksAfterShutdownPolicy());
637 <            assertFalse(one.getContinueExistingPeriodicTasksAfterShutdownPolicy());
635 >            e.invokeAny(null);
636 >            shouldThrow();
637 >        } catch (NullPointerException success) {
638 >        } finally {
639 >            joinPool(e);
640 >        }
641 >    }
642  
643 <            ScheduledCancellable[] tasks = new ScheduledCancellable[5];
644 <            for(int i = 0; i < 5; i++)
645 <                tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
646 <            one.shutdown();
647 <            BlockingQueue q = one.getQueue();
648 <            for (Iterator it = q.iterator(); it.hasNext();) {
649 <                ScheduledCancellable t = (ScheduledCancellable)it.next();
650 <                assertFalse(t.isCancelled());
651 <            }
652 <            assertTrue(one.isShutdown());
653 <            Thread.sleep(SHORT_DELAY_MS);
482 <            for (int i = 0; i < 5; ++i) {
483 <                assertTrue(tasks[i].isDone());
484 <                assertFalse(tasks[i].isCancelled());
485 <            }
486 <            
643 >    /**
644 >     * invokeAny(empty collection) throws IAE
645 >     */
646 >    public void testInvokeAny2() throws Exception {
647 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
648 >        try {
649 >            e.invokeAny(new ArrayList<Callable<String>>());
650 >            shouldThrow();
651 >        } catch (IllegalArgumentException success) {
652 >        } finally {
653 >            joinPool(e);
654          }
655 <        catch(Exception ex) {
656 <            fail("unexpected exception");
655 >    }
656 >
657 >    /**
658 >     * invokeAny(c) throws NPE if c has null elements
659 >     */
660 >    public void testInvokeAny3() throws Exception {
661 >        final CountDownLatch latch = new CountDownLatch(1);
662 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
663 >        try {
664 >            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
665 >            l.add(new Callable<String>() {
666 >                      public String call() {
667 >                          try {
668 >                              latch.await();
669 >                          } catch (InterruptedException quittingTime) {}
670 >                          return TEST_STRING;
671 >                      }});
672 >            l.add(null);
673 >            e.invokeAny(l);
674 >            shouldThrow();
675 >        } catch (NullPointerException success) {
676 >        } finally {
677 >            latch.countDown();
678 >            joinPool(e);
679          }
680      }
681  
682 +    /**
683 +     * invokeAny(c) throws ExecutionException if no task completes
684 +     */
685 +    public void testInvokeAny4() throws Exception {
686 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
687 +        try {
688 +            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
689 +            l.add(new NPETask());
690 +            e.invokeAny(l);
691 +            shouldThrow();
692 +        } catch (ExecutionException success) {
693 +            assertTrue(success.getCause() instanceof NullPointerException);
694 +        } finally {
695 +            joinPool(e);
696 +        }
697 +    }
698  
699 <    public void testShutDown2(){
699 >    /**
700 >     * invokeAny(c) returns result of some task
701 >     */
702 >    public void testInvokeAny5() throws Exception {
703 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
704          try {
705 <            ScheduledExecutor one = new ScheduledExecutor(1);
706 <            one.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
707 <            ScheduledCancellable[] tasks = new ScheduledCancellable[5];
708 <            for(int i = 0; i < 5; i++)
709 <                tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
710 <            one.shutdown();
711 <            assertTrue(one.isShutdown());
503 <            BlockingQueue q = one.getQueue();
504 <            assertTrue(q.isEmpty());
505 <            Thread.sleep(SHORT_DELAY_MS);
506 <            assertTrue(one.isTerminated());
705 >            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
706 >            l.add(new StringTask());
707 >            l.add(new StringTask());
708 >            String result = e.invokeAny(l);
709 >            assertSame(TEST_STRING, result);
710 >        } finally {
711 >            joinPool(e);
712          }
713 <        catch(Exception ex) {
714 <            fail("unexpected exception");
713 >    }
714 >
715 >    /**
716 >     * invokeAll(null) throws NPE
717 >     */
718 >    public void testInvokeAll1() throws Exception {
719 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
720 >        try {
721 >            e.invokeAll(null);
722 >            shouldThrow();
723 >        } catch (NullPointerException success) {
724 >        } finally {
725 >            joinPool(e);
726          }
727      }
728  
729 +    /**
730 +     * invokeAll(empty collection) returns empty collection
731 +     */
732 +    public void testInvokeAll2() throws Exception {
733 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
734 +        try {
735 +            List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
736 +            assertTrue(r.isEmpty());
737 +        } finally {
738 +            joinPool(e);
739 +        }
740 +    }
741  
742 <    public void testShutDown3(){
742 >    /**
743 >     * invokeAll(c) throws NPE if c has null elements
744 >     */
745 >    public void testInvokeAll3() throws Exception {
746 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
747          try {
748 <            ScheduledExecutor one = new ScheduledExecutor(1);
749 <            one.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
750 <            ScheduledCancellable task =
751 <                one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
752 <            one.shutdown();
753 <            assertTrue(one.isShutdown());
754 <            BlockingQueue q = one.getQueue();
755 <            assertTrue(q.isEmpty());
524 <            Thread.sleep(SHORT_DELAY_MS);
525 <            assertTrue(one.isTerminated());
748 >            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
749 >            l.add(new StringTask());
750 >            l.add(null);
751 >            e.invokeAll(l);
752 >            shouldThrow();
753 >        } catch (NullPointerException success) {
754 >        } finally {
755 >            joinPool(e);
756          }
757 <        catch(Exception ex) {
758 <            fail("unexpected exception");
757 >    }
758 >
759 >    /**
760 >     * get of invokeAll(c) throws exception on failed task
761 >     */
762 >    public void testInvokeAll4() throws Exception {
763 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
764 >        try {
765 >            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
766 >            l.add(new NPETask());
767 >            List<Future<String>> result = e.invokeAll(l);
768 >            assertEquals(1, result.size());
769 >            for (Future<String> future : result)
770 >                future.get();
771 >            shouldThrow();
772 >        } catch (ExecutionException success) {
773 >            assertTrue(success.getCause() instanceof NullPointerException);
774 >        } finally {
775 >            joinPool(e);
776          }
777      }
778  
779 <    public void testShutDown4(){
780 <        ScheduledExecutor one = new ScheduledExecutor(1);
779 >    /**
780 >     * invokeAll(c) returns results of all completed tasks
781 >     */
782 >    public void testInvokeAll5() throws Exception {
783 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
784          try {
785 <            one.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
786 <            ScheduledCancellable task =
787 <                one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
788 <            assertFalse(task.isCancelled());
789 <            one.shutdown();
790 <            assertFalse(task.isCancelled());
791 <            assertFalse(one.isTerminated());
792 <            assertTrue(one.isShutdown());
793 <            Thread.sleep(SHORT_DELAY_MS);
544 <            assertFalse(task.isCancelled());
545 <            task.cancel(true);
546 <            assertTrue(task.isCancelled());
547 <            Thread.sleep(SHORT_DELAY_MS);
548 <            assertTrue(one.isTerminated());
785 >            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
786 >            l.add(new StringTask());
787 >            l.add(new StringTask());
788 >            List<Future<String>> result = e.invokeAll(l);
789 >            assertEquals(2, result.size());
790 >            for (Future<String> future : result)
791 >                assertSame(TEST_STRING, future.get());
792 >        } finally {
793 >            joinPool(e);
794          }
795 <        catch(Exception ex) {
796 <            fail("unexpected exception");
795 >    }
796 >
797 >    /**
798 >     * timed invokeAny(null) throws NPE
799 >     */
800 >    public void testTimedInvokeAny1() throws Exception {
801 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
802 >        try {
803 >            e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
804 >            shouldThrow();
805 >        } catch (NullPointerException success) {
806 >        } finally {
807 >            joinPool(e);
808          }
809 <        finally {
810 <            one.shutdownNow();
809 >    }
810 >
811 >    /**
812 >     * timed invokeAny(,,null) throws NPE
813 >     */
814 >    public void testTimedInvokeAnyNullTimeUnit() throws Exception {
815 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
816 >        try {
817 >            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
818 >            l.add(new StringTask());
819 >            e.invokeAny(l, MEDIUM_DELAY_MS, null);
820 >            shouldThrow();
821 >        } catch (NullPointerException success) {
822 >        } finally {
823 >            joinPool(e);
824 >        }
825 >    }
826 >
827 >    /**
828 >     * timed invokeAny(empty collection) throws IAE
829 >     */
830 >    public void testTimedInvokeAny2() throws Exception {
831 >        ExecutorService e = new ScheduledThreadPoolExecutor(2);
832 >        try {
833 >            e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
834 >            shouldThrow();
835 >        } catch (IllegalArgumentException success) {
836 >        } finally {
837 >            joinPool(e);
838          }
839      }
840  
841 +    /**
842 +     * timed invokeAny(c) throws NPE if c has null elements
843 +     */
844 +    public void testTimedInvokeAny3() throws Exception {
845 +        final CountDownLatch latch = new CountDownLatch(1);
846 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
847 +        try {
848 +            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
849 +            l.add(new Callable<String>() {
850 +                      public String call() {
851 +                          try {
852 +                              latch.await();
853 +                          } catch (InterruptedException quittingTime) {}
854 +                          return TEST_STRING;
855 +                      }});
856 +            l.add(null);
857 +            e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
858 +            shouldThrow();
859 +        } catch (NullPointerException success) {
860 +        } finally {
861 +            latch.countDown();
862 +            joinPool(e);
863 +        }
864 +    }
865 +
866 +    /**
867 +     * timed invokeAny(c) throws ExecutionException if no task completes
868 +     */
869 +    public void testTimedInvokeAny4() throws Exception {
870 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
871 +        try {
872 +            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
873 +            l.add(new NPETask());
874 +            e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
875 +            shouldThrow();
876 +        } catch (ExecutionException success) {
877 +            assertTrue(success.getCause() instanceof NullPointerException);
878 +        } finally {
879 +            joinPool(e);
880 +        }
881 +    }
882 +
883 +    /**
884 +     * timed invokeAny(c) returns result of some task
885 +     */
886 +    public void testTimedInvokeAny5() throws Exception {
887 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
888 +        try {
889 +            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
890 +            l.add(new StringTask());
891 +            l.add(new StringTask());
892 +            String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
893 +            assertSame(TEST_STRING, result);
894 +        } finally {
895 +            joinPool(e);
896 +        }
897 +    }
898 +
899 +    /**
900 +     * timed invokeAll(null) throws NPE
901 +     */
902 +    public void testTimedInvokeAll1() throws Exception {
903 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
904 +        try {
905 +            e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
906 +            shouldThrow();
907 +        } catch (NullPointerException success) {
908 +        } finally {
909 +            joinPool(e);
910 +        }
911 +    }
912 +
913 +    /**
914 +     * timed invokeAll(,,null) throws NPE
915 +     */
916 +    public void testTimedInvokeAllNullTimeUnit() throws Exception {
917 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
918 +        try {
919 +            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
920 +            l.add(new StringTask());
921 +            e.invokeAll(l, MEDIUM_DELAY_MS, null);
922 +            shouldThrow();
923 +        } catch (NullPointerException success) {
924 +        } finally {
925 +            joinPool(e);
926 +        }
927 +    }
928 +
929 +    /**
930 +     * timed invokeAll(empty collection) returns empty collection
931 +     */
932 +    public void testTimedInvokeAll2() throws Exception {
933 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
934 +        try {
935 +            List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
936 +            assertTrue(r.isEmpty());
937 +        } finally {
938 +            joinPool(e);
939 +        }
940 +    }
941 +
942 +    /**
943 +     * timed invokeAll(c) throws NPE if c has null elements
944 +     */
945 +    public void testTimedInvokeAll3() throws Exception {
946 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
947 +        try {
948 +            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
949 +            l.add(new StringTask());
950 +            l.add(null);
951 +            e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
952 +            shouldThrow();
953 +        } catch (NullPointerException success) {
954 +        } finally {
955 +            joinPool(e);
956 +        }
957 +    }
958 +
959 +    /**
960 +     * get of element of invokeAll(c) throws exception on failed task
961 +     */
962 +    public void testTimedInvokeAll4() throws Exception {
963 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
964 +        try {
965 +            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
966 +            l.add(new NPETask());
967 +            List<Future<String>> result = e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
968 +            assertEquals(1, result.size());
969 +            for (Future<String> future : result)
970 +                future.get();
971 +            shouldThrow();
972 +        } catch (ExecutionException success) {
973 +            assertTrue(success.getCause() instanceof NullPointerException);
974 +        } finally {
975 +            joinPool(e);
976 +        }
977 +    }
978 +
979 +    /**
980 +     * timed invokeAll(c) returns results of all completed tasks
981 +     */
982 +    public void testTimedInvokeAll5() throws Exception {
983 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
984 +        try {
985 +            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
986 +            l.add(new StringTask());
987 +            l.add(new StringTask());
988 +            List<Future<String>> result = e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
989 +            assertEquals(2, result.size());
990 +            for (Future<String> future : result)
991 +                assertSame(TEST_STRING, future.get());
992 +        } finally {
993 +            joinPool(e);
994 +        }
995 +    }
996 +
997 +    /**
998 +     * timed invokeAll(c) cancels tasks not completed by timeout
999 +     */
1000 +    public void testTimedInvokeAll6() throws Exception {
1001 +        ExecutorService e = new ScheduledThreadPoolExecutor(2);
1002 +        try {
1003 +            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1004 +            l.add(new StringTask());
1005 +            l.add(Executors.callable(new MediumPossiblyInterruptedRunnable(), TEST_STRING));
1006 +            l.add(new StringTask());
1007 +            List<Future<String>> result = e.invokeAll(l, SHORT_DELAY_MS, MILLISECONDS);
1008 +            assertEquals(3, result.size());
1009 +            Iterator<Future<String>> it = result.iterator();
1010 +            Future<String> f1 = it.next();
1011 +            Future<String> f2 = it.next();
1012 +            Future<String> f3 = it.next();
1013 +            assertTrue(f1.isDone());
1014 +            assertTrue(f2.isDone());
1015 +            assertTrue(f3.isDone());
1016 +            assertFalse(f1.isCancelled());
1017 +            assertTrue(f2.isCancelled());
1018 +        } finally {
1019 +            joinPool(e);
1020 +        }
1021 +    }
1022 +
1023 +
1024   }

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