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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 1.6 by dl, Thu Sep 25 11:02:41 2003 UTC

#	Line 7 | Line 7
7
8		import junit.framework.*;
9		import java.util.concurrent.*;
10	+	import java.util.*;
11
12	<	public class FutureTaskTest extends TestCase {
12	>	public class FutureTaskTest extends JSR166TestCase {
13
14		public static void main(String[] args) {
15		junit.textui.TestRunner.run (suite());
#	Line 17 | Line 18 | public class FutureTaskTest extends Test
18		return new TestSuite(FutureTaskTest.class);
19		}
20
21	<	private static long SHORT_DELAY_MS = 100;
22	<	private static long MEDIUM_DELAY_MS = 1000;
23	<	private static long LONG_DELAY_MS = 10000;
21	>	/**
22	>	* Subclass to expose protected methods
23	>	*/
24	>	static class MyFutureTask extends FutureTask {
25	>	public MyFutureTask(Callable r) { super(r); }
26	>	public boolean reset() { return super.reset(); }
27	>	public void setCancelled() { super.setCancelled(); }
28	>	public void setDone() { super.setDone(); }
29	>	public void set(Object x) { super.set(x); }
30	>	public void setException(Throwable t) { super.setException(t); }
31	>	}
32	>
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	>	shouldThrow();
40	>	}
41	>	catch(NullPointerException success) {
42	>	}
43	>	}
44
45	<	public void testIsDone(){
46	<	FutureTask task = new FutureTask( new Callable() {
47	<	public Object call() { return Boolean.TRUE; } });
45	>	/**
46	>	* creating a future with null runnable fails
47	>	*/
48	>	public void testConstructor2() {
49	>	try {
50	>	FutureTask task = new FutureTask(null, Boolean.TRUE);
51	>	shouldThrow();
52	>	}
53	>	catch(NullPointerException success) {
54	>	}
55	>	}
56	>
57	>	/**
58	>	* isDone is true when a task completes
59	>	*/
60	>	public void testIsDone() {
61	>	FutureTask task = new FutureTask( new NoOpCallable());
62		task.run();
63		assertTrue(task.isDone());
64		assertFalse(task.isCancelled());
65		}
66
67	+	/**
68	+	* reset of a done task succeeds and changes status to not done
69	+	*/
70	+	public void testReset() {
71	+	MyFutureTask task = new MyFutureTask(new NoOpCallable());
72	+	task.run();
73	+	assertTrue(task.isDone());
74	+	assertTrue(task.reset());
75	+	assertFalse(task.isDone());
76	+	}
77	+
78	+	/**
79	+	* Resetting after cancellation fails
80	+	*/
81	+	public void testResetAfterCancel() {
82	+	MyFutureTask task = new MyFutureTask(new NoOpCallable());
83	+	assertTrue(task.cancel(false));
84	+	task.run();
85	+	assertTrue(task.isDone());
86	+	assertTrue(task.isCancelled());
87	+	assertFalse(task.reset());
88	+	}
89	+
90	+	/**
91	+	* setDone of new task causes isDone to be true
92	+	*/
93	+	public void testSetDone() {
94	+	MyFutureTask task = new MyFutureTask(new NoOpCallable());
95	+	task.setDone();
96	+	assertTrue(task.isDone());
97	+	assertFalse(task.isCancelled());
98	+	}
99	+
100	+	/**
101	+	* setCancelled of a new task causes isCancelled to be true
102	+	*/
103	+	public void testSetCancelled() {
104	+	MyFutureTask task = new MyFutureTask(new NoOpCallable());
105	+	assertTrue(task.cancel(false));
106	+	task.setCancelled();
107	+	assertTrue(task.isDone());
108	+	assertTrue(task.isCancelled());
109	+	}
110	+
111	+	/**
112	+	* setting value gauses get to return it
113	+	*/
114	+	public void testSet() {
115	+	MyFutureTask task = new MyFutureTask(new NoOpCallable());
116	+	task.set(one);
117	+	try {
118	+	assertEquals(task.get(), one);
119	+	}
120	+	catch(Exception e) {
121	+	unexpectedException();
122	+	}
123	+	}
124	+
125	+	/**
126	+	* setException causes get to throw ExecutionException
127	+	*/
128	+	public void testSetException() {
129	+	Exception nse = new NoSuchElementException();
130	+	MyFutureTask task = new MyFutureTask(new NoOpCallable());
131	+	task.setException(nse);
132	+	try {
133	+	Object x = task.get();
134	+	shouldThrow();
135	+	}
136	+	catch(ExecutionException ee) {
137	+	Throwable cause = ee.getCause();
138	+	assertEquals(cause, nse);
139	+	}
140	+	catch(Exception e) {
141	+	unexpectedException();
142	+	}
143	+	}
144	+
145	+	/**
146	+	*  Cancelling before running succeeds
147	+	*/
148		public void testCancelBeforeRun() {
149	<	FutureTask task = new FutureTask( new Callable() {
34	<	public Object call() { return Boolean.TRUE; } });
149	>	FutureTask task = new FutureTask( new NoOpCallable());
150		assertTrue(task.cancel(false));
151		task.run();
152		assertTrue(task.isDone());
153		assertTrue(task.isCancelled());
154		}
155
156	+	/**
157	+	* Cancel(true) before run succeeds
158	+	*/
159		public void testCancelBeforeRun2() {
160	<	FutureTask task = new FutureTask( new Callable() {
43	<	public Object call() { return Boolean.TRUE; } });
160	>	FutureTask task = new FutureTask( new NoOpCallable());
161		assertTrue(task.cancel(true));
162		task.run();
163		assertTrue(task.isDone());
164		assertTrue(task.isCancelled());
165		}
166
167	+	/**
168	+	* cancel of a completed task fails
169	+	*/
170		public void testCancelAfterRun() {
171	<	FutureTask task = new FutureTask( new Callable() {
52	<	public Object call() { return Boolean.TRUE; } });
171	>	FutureTask task = new FutureTask( new NoOpCallable());
172		task.run();
173		assertFalse(task.cancel(false));
174		assertTrue(task.isDone());
175		assertFalse(task.isCancelled());
176		}
177
178	<	public void testCancelInterrupt(){
178	>	/**
179	>	* cancel(true) interrupts a running task
180	>	*/
181	>	public void testCancelInterrupt() {
182		FutureTask task = new FutureTask( new Callable() {
183		public Object call() {
184		try {
185	<	Thread.sleep(SHORT_DELAY_MS* 2);
186	<	fail("should throw");
185	>	Thread.sleep(MEDIUM_DELAY_MS);
186	>	threadShouldThrow();
187		}
188		catch (InterruptedException success) {}
189		return Boolean.TRUE;
#	Line 69 | Line 191 | public class FutureTaskTest extends Test
191		Thread t = new  Thread(task);
192		t.start();
193
194	<	try{
194	>	try {
195		Thread.sleep(SHORT_DELAY_MS);
196		assertTrue(task.cancel(true));
197		t.join();
198		assertTrue(task.isDone());
199		assertTrue(task.isCancelled());
200		} catch(InterruptedException e){
201	<	fail("unexpected exception");
201	>	unexpectedException();
202		}
203		}
204
205
206	<	public void testCancelNoInterrupt(){
206	>	/**
207	>	* cancel(false) does not interrupt a running task
208	>	*/
209	>	public void testCancelNoInterrupt() {
210		FutureTask task = new FutureTask( new Callable() {
211		public Object call() {
212		try {
213	<	Thread.sleep(SHORT_DELAY_MS* 2);
213	>	Thread.sleep(MEDIUM_DELAY_MS);
214		}
215		catch (InterruptedException success) {
216	<	fail("should not interrupt");
216	>	threadFail("should not interrupt");
217		}
218		return Boolean.TRUE;
219		} });
220		Thread t = new  Thread(task);
221		t.start();
222
223	<	try{
223	>	try {
224		Thread.sleep(SHORT_DELAY_MS);
225		assertTrue(task.cancel(false));
226		t.join();
227		assertTrue(task.isDone());
228		assertTrue(task.isCancelled());
229		} catch(InterruptedException e){
230	<	fail("unexpected exception");
230	>	unexpectedException();
231		}
232		}
233
234	+	/**
235	+	* set in one thread causes get in another thread to retrieve value
236	+	*/
237		public void testGet1() {
238	<	final FutureTask ft = new FutureTask(new Callable(){
239	<	public Object call(){
240	<	try{
238	>	final FutureTask ft = new FutureTask(new Callable() {
239	>	public Object call() {
240	>	try {
241		Thread.sleep(MEDIUM_DELAY_MS);
242		} catch(InterruptedException e){
243	<	fail("unexpected exception");
243	>	threadUnexpectedException();
244		}
245		return Boolean.TRUE;
246		}
247		});
248	<	Thread t = new Thread(new Runnable(){
249	<	public void run(){
250	<	try{
248	>	Thread t = new Thread(new Runnable() {
249	>	public void run() {
250	>	try {
251		ft.get();
252		} catch(Exception e){
253	<	fail("unexpected exception");
253	>	threadUnexpectedException();
254		}
255		}
256		});
257	<	try{
257	>	try {
258		assertFalse(ft.isDone());
259		assertFalse(ft.isCancelled());
260		t.start();
#	Line 136 | Line 264 | public class FutureTaskTest extends Test
264		assertTrue(ft.isDone());
265		assertFalse(ft.isCancelled());
266		} catch(InterruptedException e){
267	<	fail("unexpected exception");
267	>	unexpectedException();
268
269		}
270		}
271
272	+	/**
273	+	* set in one thread causes timed get in another thread to retrieve value
274	+	*/
275		public void testTimedGet1() {
276	<	final FutureTask ft = new FutureTask(new Callable(){
277	<	public Object call(){
278	<	try{
276	>	final FutureTask ft = new FutureTask(new Callable() {
277	>	public Object call() {
278	>	try {
279		Thread.sleep(MEDIUM_DELAY_MS);
280		} catch(InterruptedException e){
281	<	fail("unexpected exception");
281	>	threadUnexpectedException();
282		}
283		return Boolean.TRUE;
284		}
285		});
286	<	Thread t = new Thread(new Runnable(){
287	<	public void run(){
288	<	try{
286	>	Thread t = new Thread(new Runnable() {
287	>	public void run() {
288	>	try {
289		ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
290		} catch(TimeoutException success) {
291		} catch(Exception e){
292	<	fail("unexpected exception");
292	>	threadUnexpectedException();
293		}
294		}
295		});
296	<	try{
296	>	try {
297		assertFalse(ft.isDone());
298		assertFalse(ft.isCancelled());
299		t.start();
#	Line 171 | Line 302 | public class FutureTaskTest extends Test
302		assertTrue(ft.isDone());
303		assertFalse(ft.isCancelled());
304		} catch(InterruptedException e){
305	<	fail("unexpected exception");
305	>	unexpectedException();
306
307		}
308		}
309
310	+	/**
311	+	*  Cancelling a task causes timed get in another thread to throw CancellationException
312	+	*/
313	+	public void testTimedGet_Cancellation() {
314	+	final FutureTask ft = new FutureTask(new Callable() {
315	+	public Object call() {
316	+	try {
317	+	Thread.sleep(SMALL_DELAY_MS);
318	+	threadShouldThrow();
319	+	} catch(InterruptedException e) {
320	+	}
321	+	return Boolean.TRUE;
322	+	}
323	+	});
324	+	try {
325	+	Thread t1 = new Thread(new Runnable() {
326	+	public void run() {
327	+	try {
328	+	ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
329	+	threadShouldThrow();
330	+	} catch(CancellationException success) {}
331	+	catch(Exception e){
332	+	threadUnexpectedException();
333	+	}
334	+	}
335	+	});
336	+	Thread t2 = new Thread(ft);
337	+	t1.start();
338	+	t2.start();
339	+	Thread.sleep(SHORT_DELAY_MS);
340	+	ft.cancel(true);
341	+	t1.join();
342	+	t2.join();
343	+	} catch(InterruptedException ie){
344	+	unexpectedException();
345	+	}
346	+	}
347
348	<	public void testGet_Cancellation(){
349	<	final FutureTask ft = new FutureTask(new Callable(){
350	<	public Object call(){
351	<	try{
348	>	/**
349	>	* Cancelling a task causes get in another thread to throw CancellationException
350	>	*/
351	>	public void testGet_Cancellation() {
352	>	final FutureTask ft = new FutureTask(new Callable() {
353	>	public Object call() {
354	>	try {
355		Thread.sleep(MEDIUM_DELAY_MS);
356	+	threadShouldThrow();
357		} catch(InterruptedException e){
186	–	fail("unexpected exception");
358		}
359		return Boolean.TRUE;
360		}
361		});
362		try {
363	<	Thread.sleep(SHORT_DELAY_MS);
364	<	Thread t = new Thread(new Runnable(){
365	<	public void run(){
195	<	try{
363	>	Thread t1 = new Thread(new Runnable() {
364	>	public void run() {
365	>	try {
366		ft.get();
367	<	fail("should throw");
367	>	threadShouldThrow();
368		} catch(CancellationException success){
369		}
370		catch(Exception e){
371	<	fail("unexpected exception");
371	>	threadUnexpectedException();
372		}
373		}
374		});
375	<	t.start();
375	>	Thread t2 = new Thread(ft);
376	>	t1.start();
377	>	t2.start();
378	>	Thread.sleep(SHORT_DELAY_MS);
379		ft.cancel(true);
380	<	t.join();
380	>	t1.join();
381	>	t2.join();
382		} catch(InterruptedException success){
383	<	fail("unexpected exception");
383	>	unexpectedException();
384		}
385		}
386
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	–	}
387
388	<	public void testGet_ExecutionException(){
389	<	final FutureTask ft = new FutureTask(new Callable(){
390	<	public Object call(){
388	>	/**
389	>	* A runtime exception in task causes get to throw ExecutionException
390	>	*/
391	>	public void testGet_ExecutionException() {
392	>	final FutureTask ft = new FutureTask(new Callable() {
393	>	public Object call() {
394		int i = 5/0;
395		return Boolean.TRUE;
396		}
397		});
398	<	try{
398	>	try {
399		ft.run();
400		ft.get();
401	<	fail("should throw");
401	>	shouldThrow();
402		} catch(ExecutionException success){
403		}
404		catch(Exception e){
405	<	fail("unexpected exception");
405	>	unexpectedException();
406		}
407		}
408
409	<	public void testTimedGet_ExecutionException2(){
410	<	final FutureTask ft = new FutureTask(new Callable(){
411	<	public Object call(){
409	>	/**
410	>	*  A runtime exception in task causes timed get to throw ExecutionException
411	>	*/
412	>	public void testTimedGet_ExecutionException2() {
413	>	final FutureTask ft = new FutureTask(new Callable() {
414	>	public Object call() {
415		int i = 5/0;
416		return Boolean.TRUE;
417		}
418		});
419	<	try{
419	>	try {
420		ft.run();
421		ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
422	<	fail("should throw");
422	>	shouldThrow();
423		} catch(ExecutionException success) {
424		} catch(TimeoutException success) { } // unlikely but OK
425		catch(Exception e){
426	<	fail("unexpected exception");
426	>	unexpectedException();
427		}
428		}
429
430
431	<	public void testGet_InterruptedException(){
432	<	final FutureTask ft = new FutureTask(new Callable(){
433	<	public Object call(){
434	<	return new Object();
435	<	}
436	<	});
437	<	Thread t = new Thread(new Runnable(){
438	<	public void run(){
292	<	try{
431	>	/**
432	>	* Interrupting a waiting get causes it to throw InterruptedException
433	>	*/
434	>	public void testGet_InterruptedException() {
435	>	final FutureTask ft = new FutureTask(new NoOpCallable());
436	>	Thread t = new Thread(new Runnable() {
437	>	public void run() {
438	>	try {
439		ft.get();
440	<	fail("should throw");
440	>	threadShouldThrow();
441		} catch(InterruptedException success){
442		} catch(Exception e){
443	<	fail("unexpected exception");
443	>	threadUnexpectedException();
444		}
445		}
446		});
#	Line 304 | Line 450 | public class FutureTaskTest extends Test
450		t.interrupt();
451		t.join();
452		} catch(Exception e){
453	<	fail("unexpected exception");
453	>	unexpectedException();
454		}
455		}
456
457	<	public void testTimedGet_InterruptedException2(){
458	<	final FutureTask ft = new FutureTask(new Callable(){
459	<	public Object call(){
460	<	return new Object();
461	<	}
462	<	});
463	<	Thread t = new Thread(new Runnable(){
464	<	public void run(){
465	<	try{
466	<	ft.get(100,TimeUnit.SECONDS);
321	<	fail("should throw");
457	>	/**
458	>	*  Interrupting a waiting timed get causes it to throw InterruptedException
459	>	*/
460	>	public void testTimedGet_InterruptedException2() {
461	>	final FutureTask ft = new FutureTask(new NoOpCallable());
462	>	Thread t = new Thread(new Runnable() {
463	>	public void run() {
464	>	try {
465	>	ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS);
466	>	threadShouldThrow();
467		} catch(InterruptedException success){}
468		catch(Exception e){
469	<	fail("unexpected exception");
469	>	threadUnexpectedException();
470		}
471		}
472		});
#	Line 331 | Line 476 | public class FutureTaskTest extends Test
476		t.interrupt();
477		t.join();
478		} catch(Exception e){
479	<	fail("unexpected exception");
479	>	unexpectedException();
480		}
481		}
482
483	<	public void testGet_TimeoutException(){
484	<	FutureTask ft = new FutureTask(new Callable(){
485	<	public Object call(){
486	<	return new Object();
487	<	}
488	<	});
344	<	try{
483	>	/**
484	>	* A timed out timed get throws TimeoutException
485	>	*/
486	>	public void testGet_TimeoutException() {
487	>	try {
488	>	FutureTask ft = new FutureTask(new NoOpCallable());
489		ft.get(1,TimeUnit.MILLISECONDS);
490	<	fail("should throw");
490	>	shouldThrow();
491		} catch(TimeoutException success){}
492		catch(Exception success){
493	<	fail("unexpected exception");
493	>	unexpectedException();
494		}
351	–
352	–
495		}
496
497		}

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