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

Comparing jsr166/src/test/tck/FutureTaskTest.java (file contents):
Revision 1.2 by dl, Sun Sep 7 20:39:11 2003 UTC vs.
Revision 1.11 by dl, Mon Dec 29 19:05:40 2003 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 java.util.*;
12
13	<	public class FutureTaskTest extends TestCase {
13	>	public class FutureTaskTest extends JSR166TestCase {
14
15		public static void main(String[] args) {
16		junit.textui.TestRunner.run (suite());
#	Line 17 | Line 19 | public class FutureTaskTest extends Test
19		return new TestSuite(FutureTaskTest.class);
20		}
21
22	<	private static long SHORT_DELAY_MS = 100;
23	<	private static long MEDIUM_DELAY_MS = 1000;
24	<	private static long LONG_DELAY_MS = 10000;
22	>	/**
23	>	* Subclass to expose protected methods
24	>	*/
25	>	static class PublicFutureTask extends FutureTask {
26	>	public PublicFutureTask(Callable r) { super(r); }
27	>	public boolean runAndReset() { return super.runAndReset(); }
28	>	public void set(Object x) { super.set(x); }
29	>	public void setException(Throwable t) { super.setException(t); }
30	>	}
31
32	<	public void testIsDone(){
33	<	FutureTask task = new FutureTask( new Callable() {
34	<	public Object call() { return Boolean.TRUE; } });
32	>	/**
33	>	* Creating a future with a null callable throws NPE
34	>	*/
35	>	public void testConstructor() {
36	>	try {
37	>	FutureTask task = new FutureTask(null);
38	>	shouldThrow();
39	>	}
40	>	catch(NullPointerException success) {
41	>	}
42	>	}
43	>
44	>	/**
45	>	* creating a future with null runnable fails
46	>	*/
47	>	public void testConstructor2() {
48	>	try {
49	>	FutureTask task = new FutureTask(null, Boolean.TRUE);
50	>	shouldThrow();
51	>	}
52	>	catch(NullPointerException success) {
53	>	}
54	>	}
55	>
56	>	/**
57	>	* isDone is true when a task completes
58	>	*/
59	>	public void testIsDone() {
60	>	FutureTask task = new FutureTask( new NoOpCallable());
61		task.run();
62		assertTrue(task.isDone());
63		assertFalse(task.isCancelled());
64		}
65
66	+	/**
67	+	* runAndReset of a non-cancelled task succeeds
68	+	*/
69	+	public void testRunAndReset() {
70	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
71	+	assertTrue(task.runAndReset());
72	+	assertFalse(task.isDone());
73	+	}
74	+
75	+	/**
76	+	* runAndReset after cancellation fails
77	+	*/
78	+	public void testResetAfterCancel() {
79	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
80	+	assertTrue(task.cancel(false));
81	+	assertFalse(task.runAndReset());
82	+	assertTrue(task.isDone());
83	+	assertTrue(task.isCancelled());
84	+	}
85	+
86	+
87	+
88	+	/**
89	+	* setting value causes get to return it
90	+	*/
91	+	public void testSet() {
92	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
93	+	task.set(one);
94	+	try {
95	+	assertEquals(task.get(), one);
96	+	}
97	+	catch(Exception e) {
98	+	unexpectedException();
99	+	}
100	+	}
101	+
102	+	/**
103	+	* setException causes get to throw ExecutionException
104	+	*/
105	+	public void testSetException() {
106	+	Exception nse = new NoSuchElementException();
107	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
108	+	task.setException(nse);
109	+	try {
110	+	Object x = task.get();
111	+	shouldThrow();
112	+	}
113	+	catch(ExecutionException ee) {
114	+	Throwable cause = ee.getCause();
115	+	assertEquals(cause, nse);
116	+	}
117	+	catch(Exception e) {
118	+	unexpectedException();
119	+	}
120	+	}
121	+
122	+	/**
123	+	*  Cancelling before running succeeds
124	+	*/
125		public void testCancelBeforeRun() {
126	<	FutureTask task = new FutureTask( new Callable() {
34	<	public Object call() { return Boolean.TRUE; } });
126	>	FutureTask task = new FutureTask( new NoOpCallable());
127		assertTrue(task.cancel(false));
128		task.run();
129		assertTrue(task.isDone());
130		assertTrue(task.isCancelled());
131		}
132
133	+	/**
134	+	* Cancel(true) before run succeeds
135	+	*/
136		public void testCancelBeforeRun2() {
137	<	FutureTask task = new FutureTask( new Callable() {
43	<	public Object call() { return Boolean.TRUE; } });
137	>	FutureTask task = new FutureTask( new NoOpCallable());
138		assertTrue(task.cancel(true));
139		task.run();
140		assertTrue(task.isDone());
141		assertTrue(task.isCancelled());
142		}
143
144	+	/**
145	+	* cancel of a completed task fails
146	+	*/
147		public void testCancelAfterRun() {
148	<	FutureTask task = new FutureTask( new Callable() {
52	<	public Object call() { return Boolean.TRUE; } });
148	>	FutureTask task = new FutureTask( new NoOpCallable());
149		task.run();
150		assertFalse(task.cancel(false));
151		assertTrue(task.isDone());
152		assertFalse(task.isCancelled());
153		}
154
155	<	public void testCancelInterrupt(){
155	>	/**
156	>	* cancel(true) interrupts a running task
157	>	*/
158	>	public void testCancelInterrupt() {
159		FutureTask task = new FutureTask( new Callable() {
160		public Object call() {
161		try {
162	<	Thread.sleep(SHORT_DELAY_MS* 2);
163	<	fail("should throw");
162	>	Thread.sleep(MEDIUM_DELAY_MS);
163	>	threadShouldThrow();
164		}
165		catch (InterruptedException success) {}
166		return Boolean.TRUE;
#	Line 69 | Line 168 | public class FutureTaskTest extends Test
168		Thread t = new  Thread(task);
169		t.start();
170
171	<	try{
171	>	try {
172		Thread.sleep(SHORT_DELAY_MS);
173		assertTrue(task.cancel(true));
174		t.join();
175		assertTrue(task.isDone());
176		assertTrue(task.isCancelled());
177		} catch(InterruptedException e){
178	<	fail("unexpected exception");
178	>	unexpectedException();
179		}
180		}
181
182
183	<	public void testCancelNoInterrupt(){
183	>	/**
184	>	* cancel(false) does not interrupt a running task
185	>	*/
186	>	public void testCancelNoInterrupt() {
187		FutureTask task = new FutureTask( new Callable() {
188		public Object call() {
189		try {
190	<	Thread.sleep(SHORT_DELAY_MS* 2);
190	>	Thread.sleep(MEDIUM_DELAY_MS);
191		}
192		catch (InterruptedException success) {
193	<	fail("should not interrupt");
193	>	threadFail("should not interrupt");
194		}
195		return Boolean.TRUE;
196		} });
197		Thread t = new  Thread(task);
198		t.start();
199
200	<	try{
200	>	try {
201		Thread.sleep(SHORT_DELAY_MS);
202		assertTrue(task.cancel(false));
203		t.join();
204		assertTrue(task.isDone());
205		assertTrue(task.isCancelled());
206		} catch(InterruptedException e){
207	<	fail("unexpected exception");
207	>	unexpectedException();
208		}
209		}
210
211	+	/**
212	+	* set in one thread causes get in another thread to retrieve value
213	+	*/
214		public void testGet1() {
215	<	final FutureTask ft = new FutureTask(new Callable(){
216	<	public Object call(){
217	<	try{
215	>	final FutureTask ft = new FutureTask(new Callable() {
216	>	public Object call() {
217	>	try {
218		Thread.sleep(MEDIUM_DELAY_MS);
219		} catch(InterruptedException e){
220	<	fail("unexpected exception");
220	>	threadUnexpectedException();
221		}
222		return Boolean.TRUE;
223		}
224		});
225	<	Thread t = new Thread(new Runnable(){
226	<	public void run(){
227	<	try{
225	>	Thread t = new Thread(new Runnable() {
226	>	public void run() {
227	>	try {
228		ft.get();
229		} catch(Exception e){
230	<	fail("unexpected exception");
230	>	threadUnexpectedException();
231		}
232		}
233		});
234	<	try{
234	>	try {
235		assertFalse(ft.isDone());
236		assertFalse(ft.isCancelled());
237		t.start();
#	Line 136 | Line 241 | public class FutureTaskTest extends Test
241		assertTrue(ft.isDone());
242		assertFalse(ft.isCancelled());
243		} catch(InterruptedException e){
244	<	fail("unexpected exception");
244	>	unexpectedException();
245
246		}
247		}
248
249	+	/**
250	+	* set in one thread causes timed get in another thread to retrieve value
251	+	*/
252		public void testTimedGet1() {
253	<	final FutureTask ft = new FutureTask(new Callable(){
254	<	public Object call(){
255	<	try{
253	>	final FutureTask ft = new FutureTask(new Callable() {
254	>	public Object call() {
255	>	try {
256		Thread.sleep(MEDIUM_DELAY_MS);
257		} catch(InterruptedException e){
258	<	fail("unexpected exception");
258	>	threadUnexpectedException();
259		}
260		return Boolean.TRUE;
261		}
262		});
263	<	Thread t = new Thread(new Runnable(){
264	<	public void run(){
265	<	try{
263	>	Thread t = new Thread(new Runnable() {
264	>	public void run() {
265	>	try {
266		ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
267		} catch(TimeoutException success) {
268		} catch(Exception e){
269	<	fail("unexpected exception");
269	>	threadUnexpectedException();
270		}
271		}
272		});
273	<	try{
273	>	try {
274		assertFalse(ft.isDone());
275		assertFalse(ft.isCancelled());
276		t.start();
#	Line 171 | Line 279 | public class FutureTaskTest extends Test
279		assertTrue(ft.isDone());
280		assertFalse(ft.isCancelled());
281		} catch(InterruptedException e){
282	<	fail("unexpected exception");
282	>	unexpectedException();
283
284		}
285		}
286
287	+	/**
288	+	*  Cancelling a task causes timed get in another thread to throw CancellationException
289	+	*/
290	+	public void testTimedGet_Cancellation() {
291	+	final FutureTask ft = new FutureTask(new Callable() {
292	+	public Object call() {
293	+	try {
294	+	Thread.sleep(SMALL_DELAY_MS);
295	+	threadShouldThrow();
296	+	} catch(InterruptedException e) {
297	+	}
298	+	return Boolean.TRUE;
299	+	}
300	+	});
301	+	try {
302	+	Thread t1 = new Thread(new Runnable() {
303	+	public void run() {
304	+	try {
305	+	ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
306	+	threadShouldThrow();
307	+	} catch(CancellationException success) {}
308	+	catch(Exception e){
309	+	threadUnexpectedException();
310	+	}
311	+	}
312	+	});
313	+	Thread t2 = new Thread(ft);
314	+	t1.start();
315	+	t2.start();
316	+	Thread.sleep(SHORT_DELAY_MS);
317	+	ft.cancel(true);
318	+	t1.join();
319	+	t2.join();
320	+	} catch(InterruptedException ie){
321	+	unexpectedException();
322	+	}
323	+	}
324
325	<	public void testGet_Cancellation(){
326	<	final FutureTask ft = new FutureTask(new Callable(){
327	<	public Object call(){
328	<	try{
325	>	/**
326	>	* Cancelling a task causes get in another thread to throw CancellationException
327	>	*/
328	>	public void testGet_Cancellation() {
329	>	final FutureTask ft = new FutureTask(new Callable() {
330	>	public Object call() {
331	>	try {
332		Thread.sleep(MEDIUM_DELAY_MS);
333	+	threadShouldThrow();
334		} catch(InterruptedException e){
186	–	fail("unexpected exception");
335		}
336		return Boolean.TRUE;
337		}
338		});
339		try {
340	<	Thread.sleep(SHORT_DELAY_MS);
341	<	Thread t = new Thread(new Runnable(){
342	<	public void run(){
195	<	try{
340	>	Thread t1 = new Thread(new Runnable() {
341	>	public void run() {
342	>	try {
343		ft.get();
344	<	fail("should throw");
344	>	threadShouldThrow();
345		} catch(CancellationException success){
346		}
347		catch(Exception e){
348	<	fail("unexpected exception");
348	>	threadUnexpectedException();
349		}
350		}
351		});
352	<	t.start();
352	>	Thread t2 = new Thread(ft);
353	>	t1.start();
354	>	t2.start();
355	>	Thread.sleep(SHORT_DELAY_MS);
356		ft.cancel(true);
357	<	t.join();
357	>	t1.join();
358	>	t2.join();
359		} catch(InterruptedException success){
360	<	fail("unexpected exception");
360	>	unexpectedException();
361		}
362		}
363
213	–	public void testGet_Cancellation2(){
214	–	final FutureTask ft = new FutureTask(new Callable(){
215	–	public Object call(){
216	–	try{
217	–	Thread.sleep(SHORT_DELAY_MS);
218	–	} catch(InterruptedException e) {
219	–	fail("unexpected exception");
220	–	}
221	–	return Boolean.TRUE;
222	–	}
223	–	});
224	–	try{
225	–	Thread.sleep(100);
226	–	Thread t = new Thread(new Runnable(){
227	–	public void run(){
228	–	try{
229	–	ft.get(3 * SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
230	–	fail("should throw");
231	–	} catch(CancellationException success) {}
232	–	catch(Exception e){
233	–	fail("unexpected exception");
234	–	}
235	–	}
236	–	});
237	–	t.start();
238	–	Thread.sleep(SHORT_DELAY_MS);
239	–	ft.cancel(true);
240	–	Thread.sleep(SHORT_DELAY_MS);
241	–	t.join();
242	–	} catch(InterruptedException ie){
243	–	fail("unexpected exception");
244	–	}
245	–	}
364
365	<	public void testGet_ExecutionException(){
366	<	final FutureTask ft = new FutureTask(new Callable(){
367	<	public Object call(){
365	>	/**
366	>	* A runtime exception in task causes get to throw ExecutionException
367	>	*/
368	>	public void testGet_ExecutionException() {
369	>	final FutureTask ft = new FutureTask(new Callable() {
370	>	public Object call() {
371		int i = 5/0;
372		return Boolean.TRUE;
373		}
374		});
375	<	try{
375	>	try {
376		ft.run();
377		ft.get();
378	<	fail("should throw");
378	>	shouldThrow();
379		} catch(ExecutionException success){
380		}
381		catch(Exception e){
382	<	fail("unexpected exception");
382	>	unexpectedException();
383		}
384		}
385
386	<	public void testTimedGet_ExecutionException2(){
387	<	final FutureTask ft = new FutureTask(new Callable(){
388	<	public Object call(){
386	>	/**
387	>	*  A runtime exception in task causes timed get to throw ExecutionException
388	>	*/
389	>	public void testTimedGet_ExecutionException2() {
390	>	final FutureTask ft = new FutureTask(new Callable() {
391	>	public Object call() {
392		int i = 5/0;
393		return Boolean.TRUE;
394		}
395		});
396	<	try{
396	>	try {
397		ft.run();
398		ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
399	<	fail("should throw");
399	>	shouldThrow();
400		} catch(ExecutionException success) {
401		} catch(TimeoutException success) { } // unlikely but OK
402		catch(Exception e){
403	<	fail("unexpected exception");
403	>	unexpectedException();
404		}
405		}
406
407
408	<	public void testGet_InterruptedException(){
409	<	final FutureTask ft = new FutureTask(new Callable(){
410	<	public Object call(){
411	<	return new Object();
412	<	}
413	<	});
414	<	Thread t = new Thread(new Runnable(){
415	<	public void run(){
292	<	try{
408	>	/**
409	>	* Interrupting a waiting get causes it to throw InterruptedException
410	>	*/
411	>	public void testGet_InterruptedException() {
412	>	final FutureTask ft = new FutureTask(new NoOpCallable());
413	>	Thread t = new Thread(new Runnable() {
414	>	public void run() {
415	>	try {
416		ft.get();
417	<	fail("should throw");
417	>	threadShouldThrow();
418		} catch(InterruptedException success){
419		} catch(Exception e){
420	<	fail("unexpected exception");
420	>	threadUnexpectedException();
421		}
422		}
423		});
#	Line 304 | Line 427 | public class FutureTaskTest extends Test
427		t.interrupt();
428		t.join();
429		} catch(Exception e){
430	<	fail("unexpected exception");
430	>	unexpectedException();
431		}
432		}
433
434	<	public void testTimedGet_InterruptedException2(){
435	<	final FutureTask ft = new FutureTask(new Callable(){
436	<	public Object call(){
437	<	return new Object();
438	<	}
439	<	});
440	<	Thread t = new Thread(new Runnable(){
441	<	public void run(){
442	<	try{
443	<	ft.get(100,TimeUnit.SECONDS);
321	<	fail("should throw");
434	>	/**
435	>	*  Interrupting a waiting timed get causes it to throw InterruptedException
436	>	*/
437	>	public void testTimedGet_InterruptedException2() {
438	>	final FutureTask ft = new FutureTask(new NoOpCallable());
439	>	Thread t = new Thread(new Runnable() {
440	>	public void run() {
441	>	try {
442	>	ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS);
443	>	threadShouldThrow();
444		} catch(InterruptedException success){}
445		catch(Exception e){
446	<	fail("unexpected exception");
446	>	threadUnexpectedException();
447		}
448		}
449		});
#	Line 331 | Line 453 | public class FutureTaskTest extends Test
453		t.interrupt();
454		t.join();
455		} catch(Exception e){
456	<	fail("unexpected exception");
456	>	unexpectedException();
457		}
458		}
459
460	<	public void testGet_TimeoutException(){
461	<	FutureTask ft = new FutureTask(new Callable(){
462	<	public Object call(){
463	<	return new Object();
464	<	}
465	<	});
344	<	try{
460	>	/**
461	>	* A timed out timed get throws TimeoutException
462	>	*/
463	>	public void testGet_TimeoutException() {
464	>	try {
465	>	FutureTask ft = new FutureTask(new NoOpCallable());
466		ft.get(1,TimeUnit.MILLISECONDS);
467	<	fail("should throw");
467	>	shouldThrow();
468		} catch(TimeoutException success){}
469		catch(Exception success){
470	<	fail("unexpected exception");
470	>	unexpectedException();
471		}
351	–
352	–
472		}
473
474		}

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