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

Comparing jsr166/src/test/tck/FutureTaskTest.java (file contents):
Revision 1.4 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.18 by jsr166, Tue Dec 1 09:56:28 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.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	<	public void testConstructor(){
33	>	/**
34	>	* Creating a future with a null callable throws NPE
35	>	*/
36	>	public void testConstructor() {
37		try {
38		FutureTask task = new FutureTask(null);
39	<	fail("should throw");
40	<	}
38	<	catch(NullPointerException success) {
39	<	}
39	>	shouldThrow();
40	>	} catch (NullPointerException success) {}
41		}
42
43	<	public void testConstructor2(){
43	>	/**
44	>	* creating a future with null runnable fails
45	>	*/
46	>	public void testConstructor2() {
47		try {
48		FutureTask task = new FutureTask(null, Boolean.TRUE);
49	<	fail("should throw");
50	<	}
47	<	catch(NullPointerException success) {
48	<	}
49	>	shouldThrow();
50	>	} catch (NullPointerException success) {}
51		}
52
53	<	public void testIsDone(){
54	<	FutureTask task = new FutureTask( new NoOpCallable());
55	<	task.run();
56	<	assertTrue(task.isDone());
57	<	assertFalse(task.isCancelled());
53	>	/**
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());
61		}
62
63	<	public void testReset(){
64	<	MyFutureTask task = new MyFutureTask(new NoOpCallable());
65	<	task.run();
66	<	assertTrue(task.isDone());
67	<	assertTrue(task.reset());
63	>	/**
64	>	* runAndReset of a non-cancelled task succeeds
65	>	*/
66	>	public void testRunAndReset() {
67	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
68	>	assertTrue(task.runAndReset());
69	>	assertFalse(task.isDone());
70		}
71
72	+	/**
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());
71	<	assertFalse(task.reset());
78	>	assertFalse(task.runAndReset());
79	>	assertTrue(task.isDone());
80	>	assertTrue(task.isCancelled());
81		}
82
74	–	public void testSetDone() {
75	–	MyFutureTask task = new MyFutureTask(new NoOpCallable());
76	–	task.setDone();
77	–	assertTrue(task.isDone());
78	–	assertFalse(task.isCancelled());
79	–	}
83
81	–	public void testSetCancelled() {
82	–	MyFutureTask task = new MyFutureTask(new NoOpCallable());
83	–	assertTrue(task.cancel(false));
84	–	task.setCancelled();
85	–	assertTrue(task.isDone());
86	–	assertTrue(task.isCancelled());
87	–	}
84
85	<	public void testSet() {
86	<	MyFutureTask task = new MyFutureTask(new NoOpCallable());
85	>	/**
86	>	* setting value causes get to return it
87	>	*/
88	>	public void testSet() throws Exception {
89	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
90		task.set(one);
91	<	try {
93	<	assertEquals(task.get(), one);
94	<	}
95	<	catch(Exception e) {
96	<	fail("unexpected exception");
97	<	}
91	>	assertSame(task.get(), one);
92		}
93
94	<	public void testSetException() {
94	>	/**
95	>	* setException causes get to throw ExecutionException
96	>	*/
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	<	fail("should throw");
104	<	}
105	<	catch(ExecutionException ee) {
109	<	Throwable cause = ee.getCause();
110	<	assertEquals(cause, nse);
111	<	}
112	<	catch(Exception e) {
113	<	fail("unexpected exception");
103	>	shouldThrow();
104	>	} catch (ExecutionException success) {
105	>	assertSame(success.getCause(), nse);
106		}
107		}
108
109	+	/**
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	+	* 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	+	* 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	<	public void testCancelInterrupt(){
143	<	FutureTask task = new FutureTask( new Callable() {
144	<	public Object call() {
145	<	try {
146	<	Thread.sleep(MEDIUM_DELAY_MS);
147	<	threadFail("should throw");
148	<	}
149	<	catch (InterruptedException success) {}
142	>	/**
143	>	* cancel(true) interrupts a running task
144	>	*/
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();
158	<	assertTrue(task.isDone());
159	<	assertTrue(task.isCancelled());
160	<	} catch(InterruptedException e){
161	<	fail("unexpected exception");
162	<	}
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	<	public void testCancelNoInterrupt(){
164	<	FutureTask task = new FutureTask( new Callable() {
165	<	public Object call() {
166	<	try {
167	<	Thread.sleep(MEDIUM_DELAY_MS);
168	<	}
169	<	catch (InterruptedException success) {
170	<	threadFail("should not interrupt");
174	<	}
163	>	/**
164	>	* cancel(false) does not interrupt a running task
165	>	*/
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();
184	<	assertTrue(task.isDone());
185	<	assertTrue(task.isCancelled());
186	<	} catch(InterruptedException e){
187	<	fail("unexpected exception");
188	<	}
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	<	public void testGet1() {
184	<	final FutureTask ft = new FutureTask(new Callable(){
185	<	public Object call(){
186	<	try{
187	<	Thread.sleep(MEDIUM_DELAY_MS);
188	<	} catch(InterruptedException e){
189	<	threadFail("unexpected exception");
198	<	}
199	<	return Boolean.TRUE;
200	<	}
201	<	});
202	<	Thread t = new Thread(new Runnable(){
203	<	public void run(){
204	<	try{
205	<	ft.get();
206	<	} catch(Exception e){
207	<	threadFail("unexpected exception");
208	<	}
209	<	}
210	<	});
211	<	try{
212	<	assertFalse(ft.isDone());
213	<	assertFalse(ft.isCancelled());
214	<	t.start();
215	<	Thread.sleep(SHORT_DELAY_MS);
216	<	ft.run();
217	<	t.join();
218	<	assertTrue(ft.isDone());
219	<	assertFalse(ft.isCancelled());
220	<	} catch(InterruptedException e){
221	<	fail("unexpected exception");
222	<
223	<	}
224	<	}
225	<
226	<	public void testTimedGet1() {
227	<	final FutureTask ft = new FutureTask(new Callable(){
228	<	public Object call(){
229	<	try{
230	<	Thread.sleep(MEDIUM_DELAY_MS);
231	<	} catch(InterruptedException e){
232	<	threadFail("unexpected exception");
233	<	}
183	>	/**
184	>	* set in one thread causes get in another thread to retrieve value
185	>	*/
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(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
197	<	} catch(TimeoutException success) {
198	<	} catch(Exception e){
199	<	threadFail("unexpected exception");
200	<	}
201	<	}
202	<	});
203	<	try{
204	<	assertFalse(ft.isDone());
249	<	assertFalse(ft.isCancelled());
250	<	t.start();
251	<	ft.run();
252	<	t.join();
253	<	assertTrue(ft.isDone());
254	<	assertFalse(ft.isCancelled());
255	<	} catch(InterruptedException e){
256	<	fail("unexpected exception");
257	<
258	<	}
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	+	* 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	+	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	<	public void testGet_Cancellation(){
222	<	final FutureTask ft = new FutureTask(new Callable(){
223	<	public Object call(){
224	<	try{
225	<	Thread.sleep(MEDIUM_DELAY_MS);
226	<	} catch(InterruptedException e){
227	<	threadFail("unexpected exception");
228	<	}
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	<	try {
243	<	Thread.sleep(SHORT_DELAY_MS);
244	<	Thread t = new Thread(new Runnable(){
245	<	public void run(){
246	<	try{
247	<	ft.get();
248	<	threadFail("should throw");
249	<	} catch(CancellationException success){
250	<	}
251	<	catch(Exception e){
252	<	threadFail("unexpected exception");
284	<	}
285	<	}
286	<	});
287	<	t.start();
288	<	ft.cancel(true);
289	<	t.join();
290	<	} catch(InterruptedException success){
291	<	fail("unexpected exception");
292	<	}
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	<	public void testGet_Cancellation2(){
256	<	final FutureTask ft = new FutureTask(new Callable(){
257	<	public Object call(){
258	<	try{
259	<	Thread.sleep(SHORT_DELAY_MS);
260	<	} catch(InterruptedException e) {
261	<	threadFail("unexpected exception");
262	<	}
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(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
272	<	threadFail("should throw");
273	<	} catch(CancellationException success) {}
274	<	catch(Exception e){
275	<	threadFail("unexpected exception");
276	<	}
317	<	}
318	<	});
319	<	t.start();
320	<	Thread.sleep(SHORT_DELAY_MS);
321	<	ft.cancel(true);
322	<	Thread.sleep(SHORT_DELAY_MS);
323	<	t.join();
324	<	} catch(InterruptedException ie){
325	<	fail("unexpected exception");
326	<	}
254	>
255	>	/**
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	>	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
279	<	public void testGet_ExecutionException(){
280	<	final FutureTask ft = new FutureTask(new Callable(){
281	<	public Object call(){
282	<	int i = 5/0;
283	<	return Boolean.TRUE;
284	<	}
285	<	});
286	<	try{
287	<	ft.run();
288	<	ft.get();
289	<	fail("should throw");
340	<	} catch(ExecutionException success){
341	<	}
342	<	catch(Exception e){
343	<	fail("unexpected exception");
344	<	}
345	<	}
346	<
347	<	public void testTimedGet_ExecutionException2(){
348	<	final FutureTask ft = new FutureTask(new Callable(){
349	<	public Object call(){
350	<	int i = 5/0;
351	<	return Boolean.TRUE;
352	<	}
353	<	});
354	<	try{
355	<	ft.run();
356	<	ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
357	<	fail("should throw");
358	<	} catch(ExecutionException success) {
359	<	} catch(TimeoutException success) { } // unlikely but OK
360	<	catch(Exception e){
361	<	fail("unexpected exception");
362	<	}
363	<	}
364	<
365	<
366	<	public void testGet_InterruptedException(){
367	<	final FutureTask ft = new FutureTask(new NoOpCallable());
368	<	Thread t = new Thread(new Runnable(){
369	<	public void run(){
370	<	try{
371	<	ft.get();
372	<	threadFail("should throw");
373	<	} catch(InterruptedException success){
374	<	} catch(Exception e){
375	<	threadFail("unexpected exception");
376	<	}
377	<	}
378	<	});
279	>
280	>	/**
281	>	* A runtime exception in task causes get to throw ExecutionException
282	>	*/
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	<	t.start();
292	<	Thread.sleep(SHORT_DELAY_MS);
293	<	t.interrupt();
294	<	t.join();
384	<	} catch(Exception e){
385	<	fail("unexpected exception");
291	>	ft.get();
292	>	shouldThrow();
293	>	} catch (ExecutionException success) {
294	>	assertTrue(success.getCause() instanceof ArithmeticException);
295		}
296		}
297
298	<	public void testTimedGet_InterruptedException2(){
299	<	final FutureTask ft = new FutureTask(new NoOpCallable());
300	<	Thread t = new Thread(new Runnable(){
301	<	public void run(){
302	<	try{
303	<	ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS);
304	<	threadFail("should throw");
305	<	} catch(InterruptedException success){}
306	<	catch(Exception e){
307	<	threadFail("unexpected exception");
399	<	}
400	<	}
401	<	});
298	>	/**
299	>	*  A runtime exception in task causes timed get to throw ExecutionException
300	>	*/
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();
407	<	} catch(Exception e){
408	<	fail("unexpected exception");
309	>	ft.get(SHORT_DELAY_MS, MILLISECONDS);
310	>	shouldThrow();
311	>	} catch (ExecutionException success) {
312	>	assertTrue(success.getCause() instanceof ArithmeticException);
313		}
314		}
315	<
316	<	public void testGet_TimeoutException(){
317	<	try{
315	>
316	>
317	>	/**
318	>	* Interrupting a waiting get causes it to throw InterruptedException
319	>	*/
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	>
349	>	/**
350	>	* A timed out timed get throws TimeoutException
351	>	*/
352	>	public void testGet_TimeoutException() throws Exception {
353	>	try {
354		FutureTask ft = new FutureTask(new NoOpCallable());
355	<	ft.get(1,TimeUnit.MILLISECONDS);
356	<	fail("should throw");
357	<	} catch(TimeoutException success){}
418	<	catch(Exception success){
419	<	fail("unexpected exception");
420	<	}
355	>	ft.get(1,MILLISECONDS);
356	>	shouldThrow();
357	>	} catch (TimeoutException success) {}
358		}
359	<
359	>
360		}

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