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root/jsr166/jsr166/src/test/tck/FutureTaskTest.java

Comparing jsr166/src/test/tck/FutureTaskTest.java (file contents):
Revision 1.5 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.19 by jsr166, Wed Aug 25 00:07:03 2010 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.concurrent.*;
11	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
12		import java.util.*;
13
14		public class FutureTaskTest extends JSR166TestCase {
15
16		public static void main(String[] args) {
17	<	junit.textui.TestRunner.run (suite());
17	>	junit.textui.TestRunner.run(suite());
18		}
19		public static Test suite() {
20	<	return new TestSuite(FutureTaskTest.class);
20	>	return new TestSuite(FutureTaskTest.class);
21		}
22
23		/**
24		* Subclass to expose protected methods
25		*/
26	<	static class MyFutureTask extends FutureTask {
27	<	public MyFutureTask(Callable r) { super(r); }
28	<	public boolean reset() { return super.reset(); }
27	<	public void setCancelled() { super.setCancelled(); }
28	<	public void setDone() { super.setDone(); }
26	>	static class PublicFutureTask extends FutureTask {
27	>	public PublicFutureTask(Callable r) { super(r); }
28	>	public boolean runAndReset() { return super.runAndReset(); }
29		public void set(Object x) { super.set(x); }
30		public void setException(Throwable t) { super.setException(t); }
31		}
32
33		/**
34	<	*
34	>	* Creating a future with a null callable throws NPE
35		*/
36		public void testConstructor() {
37		try {
38		FutureTask task = new FutureTask(null);
39		shouldThrow();
40	<	}
41	<	catch(NullPointerException success) {
42	<	}
40	>	} catch (NullPointerException success) {}
41		}
42
43		/**
44	<	*
44	>	* creating a future with null runnable fails
45		*/
46		public void testConstructor2() {
47		try {
48		FutureTask task = new FutureTask(null, Boolean.TRUE);
49		shouldThrow();
50	<	}
53	<	catch(NullPointerException success) {
54	<	}
50	>	} catch (NullPointerException success) {}
51		}
52
53		/**
54	<	*
54	>	* isDone is true when a task completes
55		*/
56		public void testIsDone() {
57	<	FutureTask task = new FutureTask( new NoOpCallable());
58	<	task.run();
59	<	assertTrue(task.isDone());
60	<	assertFalse(task.isCancelled());
57	>	FutureTask task = new FutureTask(new NoOpCallable());
58	>	task.run();
59	>	assertTrue(task.isDone());
60	>	assertFalse(task.isCancelled());
61		}
62
63		/**
64	<	*
64	>	* runAndReset of a non-cancelled task succeeds
65		*/
66	<	public void testReset() {
67	<	MyFutureTask task = new MyFutureTask(new NoOpCallable());
68	<	task.run();
69	<	assertTrue(task.isDone());
74	<	assertTrue(task.reset());
66	>	public void testRunAndReset() {
67	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
68	>	assertTrue(task.runAndReset());
69	>	assertFalse(task.isDone());
70		}
71
72		/**
73	<	*
73	>	* runAndReset after cancellation fails
74		*/
75		public void testResetAfterCancel() {
76	<	MyFutureTask task = new MyFutureTask(new NoOpCallable());
76	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
77		assertTrue(task.cancel(false));
78	<	task.run();
79	<	assertTrue(task.isDone());
80	<	assertTrue(task.isCancelled());
86	<	assertFalse(task.reset());
78	>	assertFalse(task.runAndReset());
79	>	assertTrue(task.isDone());
80	>	assertTrue(task.isCancelled());
81		}
82
89	–	/**
90	–	*
91	–	*/
92	–	public void testSetDone() {
93	–	MyFutureTask task = new MyFutureTask(new NoOpCallable());
94	–	task.setDone();
95	–	assertTrue(task.isDone());
96	–	assertFalse(task.isCancelled());
97	–	}
83
99	–	/**
100	–	*
101	–	*/
102	–	public void testSetCancelled() {
103	–	MyFutureTask task = new MyFutureTask(new NoOpCallable());
104	–	assertTrue(task.cancel(false));
105	–	task.setCancelled();
106	–	assertTrue(task.isDone());
107	–	assertTrue(task.isCancelled());
108	–	}
84
85		/**
86	<	*
86	>	* setting value causes get to return it
87		*/
88	<	public void testSet() {
89	<	MyFutureTask task = new MyFutureTask(new NoOpCallable());
88	>	public void testSet() throws Exception {
89	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
90		task.set(one);
91	<	try {
117	<	assertEquals(task.get(), one);
118	<	}
119	<	catch(Exception e) {
120	<	unexpectedException();
121	<	}
91	>	assertSame(task.get(), one);
92		}
93
94		/**
95	<	*
95	>	* setException causes get to throw ExecutionException
96		*/
97	<	public void testSetException() {
97	>	public void testSetException() throws Exception {
98		Exception nse = new NoSuchElementException();
99	<	MyFutureTask task = new MyFutureTask(new NoOpCallable());
99	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
100		task.setException(nse);
101		try {
102		Object x = task.get();
103		shouldThrow();
104	<	}
105	<	catch(ExecutionException ee) {
136	<	Throwable cause = ee.getCause();
137	<	assertEquals(cause, nse);
138	<	}
139	<	catch(Exception e) {
140	<	unexpectedException();
104	>	} catch (ExecutionException success) {
105	>	assertSame(success.getCause(), nse);
106		}
107		}
108
109		/**
110	<	*
110	>	*  Cancelling before running succeeds
111		*/
112		public void testCancelBeforeRun() {
113	<	FutureTask task = new FutureTask( new NoOpCallable());
113	>	FutureTask task = new FutureTask(new NoOpCallable());
114		assertTrue(task.cancel(false));
115	<	task.run();
116	<	assertTrue(task.isDone());
117	<	assertTrue(task.isCancelled());
115	>	task.run();
116	>	assertTrue(task.isDone());
117	>	assertTrue(task.isCancelled());
118		}
119
120		/**
121	<	*
121	>	* Cancel(true) before run succeeds
122		*/
123		public void testCancelBeforeRun2() {
124	<	FutureTask task = new FutureTask( new NoOpCallable());
124	>	FutureTask task = new FutureTask(new NoOpCallable());
125		assertTrue(task.cancel(true));
126	<	task.run();
127	<	assertTrue(task.isDone());
128	<	assertTrue(task.isCancelled());
126	>	task.run();
127	>	assertTrue(task.isDone());
128	>	assertTrue(task.isCancelled());
129		}
130
131		/**
132	<	*
132	>	* cancel of a completed task fails
133		*/
134		public void testCancelAfterRun() {
135	<	FutureTask task = new FutureTask( new NoOpCallable());
136	<	task.run();
135	>	FutureTask task = new FutureTask(new NoOpCallable());
136	>	task.run();
137		assertFalse(task.cancel(false));
138	<	assertTrue(task.isDone());
139	<	assertFalse(task.isCancelled());
138	>	assertTrue(task.isDone());
139	>	assertFalse(task.isCancelled());
140		}
141
142		/**
143	<	*
143	>	* cancel(true) interrupts a running task
144		*/
145	<	public void testCancelInterrupt() {
146	<	FutureTask task = new FutureTask( new Callable() {
147	<	public Object call() {
148	<	try {
149	<	Thread.sleep(MEDIUM_DELAY_MS);
185	<	threadShouldThrow();
186	<	}
187	<	catch (InterruptedException success) {}
145	>	public void testCancelInterrupt() throws InterruptedException {
146	>	final FutureTask task =
147	>	new FutureTask(new CheckedInterruptedCallable<Object>() {
148	>	public Object realCall() throws InterruptedException {
149	>	Thread.sleep(SMALL_DELAY_MS);
150		return Boolean.TRUE;
151	<	} });
152	<	Thread t = new  Thread(task);
151	>	}});
152	>
153	>	Thread t = new Thread(task);
154		t.start();
155	<
156	<	try {
157	<	Thread.sleep(SHORT_DELAY_MS);
158	<	assertTrue(task.cancel(true));
159	<	t.join();
197	<	assertTrue(task.isDone());
198	<	assertTrue(task.isCancelled());
199	<	} catch(InterruptedException e){
200	<	unexpectedException();
201	<	}
155	>	Thread.sleep(SHORT_DELAY_MS);
156	>	assertTrue(task.cancel(true));
157	>	t.join();
158	>	assertTrue(task.isDone());
159	>	assertTrue(task.isCancelled());
160		}
161
162
163		/**
164	<	*
164	>	* cancel(false) does not interrupt a running task
165		*/
166	<	public void testCancelNoInterrupt() {
167	<	FutureTask task = new FutureTask( new Callable() {
168	<	public Object call() {
169	<	try {
170	<	Thread.sleep(MEDIUM_DELAY_MS);
213	<	}
214	<	catch (InterruptedException success) {
215	<	threadFail("should not interrupt");
216	<	}
166	>	public void testCancelNoInterrupt() throws InterruptedException {
167	>	final FutureTask task =
168	>	new FutureTask(new CheckedCallable<Object>() {
169	>	public Object realCall() throws InterruptedException {
170	>	Thread.sleep(MEDIUM_DELAY_MS);
171		return Boolean.TRUE;
172	<	} });
173	<	Thread t = new  Thread(task);
172	>	}});
173	>
174	>	Thread t = new Thread(task);
175		t.start();
176	<
177	<	try {
178	<	Thread.sleep(SHORT_DELAY_MS);
179	<	assertTrue(task.cancel(false));
180	<	t.join();
226	<	assertTrue(task.isDone());
227	<	assertTrue(task.isCancelled());
228	<	} catch(InterruptedException e){
229	<	unexpectedException();
230	<	}
176	>	Thread.sleep(SHORT_DELAY_MS);
177	>	assertTrue(task.cancel(false));
178	>	t.join();
179	>	assertTrue(task.isDone());
180	>	assertTrue(task.isCancelled());
181		}
182
183		/**
184	<	*
184	>	* set in one thread causes get in another thread to retrieve value
185		*/
186	<	public void testGet1() {
187	<	final FutureTask ft = new FutureTask(new Callable() {
188	<	public Object call() {
189	<	try {
240	<	Thread.sleep(MEDIUM_DELAY_MS);
241	<	} catch(InterruptedException e){
242	<	threadUnexpectedException();
243	<	}
186	>	public void testGet1() throws InterruptedException {
187	>	final FutureTask ft =
188	>	new FutureTask(new CheckedCallable<Object>() {
189	>	public Object realCall() throws InterruptedException {
190		return Boolean.TRUE;
191	<	}
192	<	});
193	<	Thread t = new Thread(new Runnable() {
194	<	public void run() {
195	<	try {
196	<	ft.get();
197	<	} catch(Exception e){
198	<	threadUnexpectedException();
199	<	}
200	<	}
201	<	});
202	<	try {
203	<	assertFalse(ft.isDone());
204	<	assertFalse(ft.isCancelled());
259	<	t.start();
260	<	Thread.sleep(SHORT_DELAY_MS);
261	<	ft.run();
262	<	t.join();
263	<	assertTrue(ft.isDone());
264	<	assertFalse(ft.isCancelled());
265	<	} catch(InterruptedException e){
266	<	unexpectedException();
267	<
268	<	}
191	>	}});
192	>	Thread t = new Thread(new CheckedRunnable() {
193	>	public void realRun() throws Exception {
194	>	assertSame(Boolean.TRUE, ft.get());
195	>	}});
196	>
197	>	assertFalse(ft.isDone());
198	>	assertFalse(ft.isCancelled());
199	>	t.start();
200	>	Thread.sleep(SHORT_DELAY_MS);
201	>	ft.run();
202	>	t.join();
203	>	assertTrue(ft.isDone());
204	>	assertFalse(ft.isCancelled());
205		}
206
207		/**
208	<	*
209	<	*/
210	<	public void testTimedGet1() {
211	<	final FutureTask ft = new FutureTask(new Callable() {
212	<	public Object call() {
213	<	try {
278	<	Thread.sleep(MEDIUM_DELAY_MS);
279	<	} catch(InterruptedException e){
280	<	threadUnexpectedException();
281	<	}
208	>	* set in one thread causes timed get in another thread to retrieve value
209	>	*/
210	>	public void testTimedGet1() throws InterruptedException {
211	>	final FutureTask ft =
212	>	new FutureTask(new CheckedCallable<Object>() {
213	>	public Object realCall() throws InterruptedException {
214		return Boolean.TRUE;
215	<	}
216	<	});
217	<	Thread t = new Thread(new Runnable() {
218	<	public void run() {
219	<	try {
220	<	ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
221	<	} catch(TimeoutException success) {
222	<	} catch(Exception e){
223	<	threadUnexpectedException();
224	<	}
225	<	}
226	<	});
227	<	try {
228	<	assertFalse(ft.isDone());
297	<	assertFalse(ft.isCancelled());
298	<	t.start();
299	<	ft.run();
300	<	t.join();
301	<	assertTrue(ft.isDone());
302	<	assertFalse(ft.isCancelled());
303	<	} catch(InterruptedException e){
304	<	unexpectedException();
305	<
306	<	}
215	>	}});
216	>	Thread t = new Thread(new CheckedRunnable() {
217	>	public void realRun() throws Exception {
218	>	assertSame(Boolean.TRUE, ft.get(SMALL_DELAY_MS, MILLISECONDS));
219	>	}});
220	>
221	>	assertFalse(ft.isDone());
222	>	assertFalse(ft.isCancelled());
223	>	t.start();
224	>	Thread.sleep(SHORT_DELAY_MS);
225	>	ft.run();
226	>	t.join();
227	>	assertTrue(ft.isDone());
228	>	assertFalse(ft.isCancelled());
229		}
230
231	+	/**
232	+	*  Cancelling a task causes timed get in another thread to throw CancellationException
233	+	*/
234	+	public void testTimedGet_Cancellation() throws InterruptedException {
235	+	final FutureTask ft =
236	+	new FutureTask(new CheckedInterruptedCallable<Object>() {
237	+	public Object realCall() throws InterruptedException {
238	+	Thread.sleep(SMALL_DELAY_MS);
239	+	return Boolean.TRUE;
240	+	}});
241	+
242	+	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
243	+	public void realRun() throws Exception {
244	+	ft.get(MEDIUM_DELAY_MS, MILLISECONDS);
245	+	}};
246	+	Thread t2 = new Thread(ft);
247	+	t1.start();
248	+	t2.start();
249	+	Thread.sleep(SHORT_DELAY_MS);
250	+	ft.cancel(true);
251	+	t1.join();
252	+	t2.join();
253	+	}
254
255		/**
256	<	*
257	<	*/
258	<	public void testGet_Cancellation() {
259	<	final FutureTask ft = new FutureTask(new Callable() {
260	<	public Object call() {
261	<	try {
262	<	Thread.sleep(MEDIUM_DELAY_MS);
318	<	} catch(InterruptedException e){
319	<	threadUnexpectedException();
320	<	}
256	>	* Cancelling a task causes get in another thread to throw CancellationException
257	>	*/
258	>	public void testGet_Cancellation() throws InterruptedException {
259	>	final FutureTask ft =
260	>	new FutureTask(new CheckedInterruptedCallable<Object>() {
261	>	public Object realCall() throws InterruptedException {
262	>	Thread.sleep(SMALL_DELAY_MS);
263		return Boolean.TRUE;
264	<	}
265	<	});
266	<	try {
267	<	Thread.sleep(SHORT_DELAY_MS);
268	<	Thread t = new Thread(new Runnable() {
269	<	public void run() {
270	<	try {
271	<	ft.get();
272	<	threadShouldThrow();
273	<	} catch(CancellationException success){
274	<	}
275	<	catch(Exception e){
276	<	threadUnexpectedException();
335	<	}
336	<	}
337	<	});
338	<	t.start();
339	<	ft.cancel(true);
340	<	t.join();
341	<	} catch(InterruptedException success){
342	<	unexpectedException();
343	<	}
264	>	}});
265	>	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
266	>	public void realRun() throws Exception {
267	>	ft.get();
268	>	}};
269	>
270	>	Thread t2 = new Thread(ft);
271	>	t1.start();
272	>	t2.start();
273	>	Thread.sleep(SHORT_DELAY_MS);
274	>	ft.cancel(true);
275	>	t1.join();
276	>	t2.join();
277		}
278	<
278	>
279	>
280		/**
281	<	*
281	>	* A runtime exception in task causes get to throw ExecutionException
282		*/
283	<	public void testGet_Cancellation2() {
284	<	final FutureTask ft = new FutureTask(new Callable() {
285	<	public Object call() {
286	<	try {
287	<	Thread.sleep(SHORT_DELAY_MS);
288	<	} catch(InterruptedException e) {
289	<	threadUnexpectedException();
290	<	}
291	<	return Boolean.TRUE;
292	<	}
293	<	});
294	<	try {
361	<	Thread.sleep(SHORT_DELAY_MS);
362	<	Thread t = new Thread(new Runnable() {
363	<	public void run() {
364	<	try {
365	<	ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
366	<	threadShouldThrow();
367	<	} catch(CancellationException success) {}
368	<	catch(Exception e){
369	<	threadUnexpectedException();
370	<	}
371	<	}
372	<	});
373	<	t.start();
374	<	Thread.sleep(SHORT_DELAY_MS);
375	<	ft.cancel(true);
376	<	Thread.sleep(SHORT_DELAY_MS);
377	<	t.join();
378	<	} catch(InterruptedException ie){
379	<	unexpectedException();
283	>	public void testGet_ExecutionException() throws InterruptedException {
284	>	final FutureTask ft = new FutureTask(new Callable() {
285	>	public Object call() {
286	>	return 5/0;
287	>	}});
288	>
289	>	ft.run();
290	>	try {
291	>	ft.get();
292	>	shouldThrow();
293	>	} catch (ExecutionException success) {
294	>	assertTrue(success.getCause() instanceof ArithmeticException);
295		}
296		}
297
298		/**
299	<	*
299	>	*  A runtime exception in task causes timed get to throw ExecutionException
300		*/
301	<	public void testGet_ExecutionException() {
302	<	final FutureTask ft = new FutureTask(new Callable() {
303	<	public Object call() {
304	<	int i = 5/0;
305	<	return Boolean.TRUE;
306	<	}
307	<	});
393	<	try {
394	<	ft.run();
395	<	ft.get();
396	<	shouldThrow();
397	<	} catch(ExecutionException success){
398	<	}
399	<	catch(Exception e){
400	<	unexpectedException();
401	<	}
402	<	}
403	<
404	<	/**
405	<	*
406	<	*/
407	<	public void testTimedGet_ExecutionException2() {
408	<	final FutureTask ft = new FutureTask(new Callable() {
409	<	public Object call() {
410	<	int i = 5/0;
411	<	return Boolean.TRUE;
412	<	}
413	<	});
414	<	try {
415	<	ft.run();
416	<	ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
417	<	shouldThrow();
418	<	} catch(ExecutionException success) {
419	<	} catch(TimeoutException success) { } // unlikely but OK
420	<	catch(Exception e){
421	<	unexpectedException();
422	<	}
423	<	}
424	<
425	<
426	<	/**
427	<	*
428	<	*/
429	<	public void testGet_InterruptedException() {
430	<	final FutureTask ft = new FutureTask(new NoOpCallable());
431	<	Thread t = new Thread(new Runnable() {
432	<	public void run() {
433	<	try {
434	<	ft.get();
435	<	threadShouldThrow();
436	<	} catch(InterruptedException success){
437	<	} catch(Exception e){
438	<	threadUnexpectedException();
439	<	}
440	<	}
441	<	});
301	>	public void testTimedGet_ExecutionException2() throws Exception {
302	>	final FutureTask ft = new FutureTask(new Callable() {
303	>	public Object call() {
304	>	return 5/0;
305	>	}});
306	>
307	>	ft.run();
308		try {
309	<	t.start();
310	<	Thread.sleep(SHORT_DELAY_MS);
311	<	t.interrupt();
312	<	t.join();
447	<	} catch(Exception e){
448	<	unexpectedException();
309	>	ft.get(SHORT_DELAY_MS, MILLISECONDS);
310	>	shouldThrow();
311	>	} catch (ExecutionException success) {
312	>	assertTrue(success.getCause() instanceof ArithmeticException);
313		}
314		}
315
316	+
317		/**
318	<	*
318	>	* Interrupting a waiting get causes it to throw InterruptedException
319		*/
320	<	public void testTimedGet_InterruptedException2() {
321	<	final FutureTask ft = new FutureTask(new NoOpCallable());
322	<	Thread t = new Thread(new Runnable() {
323	<	public void run() {
324	<	try {
325	<	ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS);
326	<	threadShouldThrow();
327	<	} catch(InterruptedException success){}
328	<	catch(Exception e){
329	<	threadUnexpectedException();
330	<	}
331	<	}
332	<	});
333	<	try {
334	<	t.start();
335	<	Thread.sleep(SHORT_DELAY_MS);
336	<	t.interrupt();
337	<	t.join();
338	<	} catch(Exception e){
339	<	unexpectedException();
340	<	}
320	>	public void testGet_InterruptedException() throws InterruptedException {
321	>	final FutureTask ft = new FutureTask(new NoOpCallable());
322	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
323	>	public void realRun() throws Exception {
324	>	ft.get();
325	>	}});
326	>
327	>	t.start();
328	>	Thread.sleep(SHORT_DELAY_MS);
329	>	t.interrupt();
330	>	t.join();
331	>	}
332	>
333	>	/**
334	>	*  Interrupting a waiting timed get causes it to throw InterruptedException
335	>	*/
336	>	public void testTimedGet_InterruptedException2() throws InterruptedException {
337	>	final FutureTask ft = new FutureTask(new NoOpCallable());
338	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
339	>	public void realRun() throws Exception {
340	>	ft.get(LONG_DELAY_MS,MILLISECONDS);
341	>	}});
342	>
343	>	t.start();
344	>	Thread.sleep(SHORT_DELAY_MS);
345	>	t.interrupt();
346	>	t.join();
347		}
348	<
348	>
349		/**
350	<	*
350	>	* A timed out timed get throws TimeoutException
351		*/
352	<	public void testGet_TimeoutException() {
353	<	try {
352	>	public void testGet_TimeoutException() throws Exception {
353	>	try {
354		FutureTask ft = new FutureTask(new NoOpCallable());
355	<	ft.get(1,TimeUnit.MILLISECONDS);
356	<	shouldThrow();
357	<	} catch(TimeoutException success){}
487	<	catch(Exception success){
488	<	unexpectedException();
489	<	}
355	>	ft.get(1,MILLISECONDS);
356	>	shouldThrow();
357	>	} catch (TimeoutException success) {}
358		}
359	<
359	>
360		}

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