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

Comparing jsr166/src/test/tck/FutureTaskTest.java (file contents):
Revision 1.3 by dl, Fri Sep 12 15:40:25 2003 UTC vs.
Revision 1.8 by dl, Mon Dec 22 00:48:55 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 PublicFutureTask extends FutureTask {
25	>	public PublicFutureTask(Callable r) { super(r); }
26	>	public boolean reset() { return super.reset(); }
27	>	public void setCancelled() { super.setCancelled(); }
28	>	public void set(Object x) { super.set(x); }
29	>	public void setException(Throwable t) { super.setException(t); }
30	>	}
31
32	<	public void testConstructor(){
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	<	fail("should throw");
38	>	shouldThrow();
39		}
40		catch(NullPointerException success) {
41		}
42		}
43
44	<	public void testConstructor2(){
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	<	fail("should throw");
50	>	shouldThrow();
51		}
52		catch(NullPointerException success) {
53		}
54		}
55
56	<	public void testIsDone(){
57	<	FutureTask task = new FutureTask( new Callable() {
58	<	public Object call() { return Boolean.TRUE; } });
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	+	* reset of a done task succeeds and changes status to not done
68	+	*/
69	+	public void testReset() {
70	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
71	+	task.run();
72	+	assertTrue(task.isDone());
73	+	assertTrue(task.reset());
74	+	assertFalse(task.isDone());
75	+	}
76	+
77	+	/**
78	+	* Resetting after cancellation fails
79	+	*/
80	+	public void testResetAfterCancel() {
81	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
82	+	assertTrue(task.cancel(false));
83	+	task.run();
84	+	assertTrue(task.isDone());
85	+	assertTrue(task.isCancelled());
86	+	assertFalse(task.reset());
87	+	}
88	+
89	+
90	+	/**
91	+	* setCancelled of a new task causes isCancelled to be true
92	+	*/
93	+	public void testSetCancelled() {
94	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
95	+	assertTrue(task.cancel(false));
96	+	task.setCancelled();
97	+	assertTrue(task.isDone());
98	+	assertTrue(task.isCancelled());
99	+	}
100	+
101	+	/**
102	+	* setting value gauses get to return it
103	+	*/
104	+	public void testSet() {
105	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
106	+	task.set(one);
107	+	try {
108	+	assertEquals(task.get(), one);
109	+	}
110	+	catch(Exception e) {
111	+	unexpectedException();
112	+	}
113	+	}
114	+
115	+	/**
116	+	* setException causes get to throw ExecutionException
117	+	*/
118	+	public void testSetException() {
119	+	Exception nse = new NoSuchElementException();
120	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
121	+	task.setException(nse);
122	+	try {
123	+	Object x = task.get();
124	+	shouldThrow();
125	+	}
126	+	catch(ExecutionException ee) {
127	+	Throwable cause = ee.getCause();
128	+	assertEquals(cause, nse);
129	+	}
130	+	catch(Exception e) {
131	+	unexpectedException();
132	+	}
133	+	}
134	+
135	+	/**
136	+	*  Cancelling before running succeeds
137	+	*/
138		public void testCancelBeforeRun() {
139	<	FutureTask task = new FutureTask( new Callable() {
52	<	public Object call() { return Boolean.TRUE; } });
139	>	FutureTask task = new FutureTask( new NoOpCallable());
140		assertTrue(task.cancel(false));
141		task.run();
142		assertTrue(task.isDone());
143		assertTrue(task.isCancelled());
144		}
145
146	+	/**
147	+	* Cancel(true) before run succeeds
148	+	*/
149		public void testCancelBeforeRun2() {
150	<	FutureTask task = new FutureTask( new Callable() {
61	<	public Object call() { return Boolean.TRUE; } });
150	>	FutureTask task = new FutureTask( new NoOpCallable());
151		assertTrue(task.cancel(true));
152		task.run();
153		assertTrue(task.isDone());
154		assertTrue(task.isCancelled());
155		}
156
157	+	/**
158	+	* cancel of a completed task fails
159	+	*/
160		public void testCancelAfterRun() {
161	<	FutureTask task = new FutureTask( new Callable() {
70	<	public Object call() { return Boolean.TRUE; } });
161	>	FutureTask task = new FutureTask( new NoOpCallable());
162		task.run();
163		assertFalse(task.cancel(false));
164		assertTrue(task.isDone());
165		assertFalse(task.isCancelled());
166		}
167
168	<	public void testCancelInterrupt(){
168	>	/**
169	>	* cancel(true) interrupts a running task
170	>	*/
171	>	public void testCancelInterrupt() {
172		FutureTask task = new FutureTask( new Callable() {
173		public Object call() {
174		try {
175	<	Thread.sleep(SHORT_DELAY_MS* 2);
176	<	fail("should throw");
175	>	Thread.sleep(MEDIUM_DELAY_MS);
176	>	threadShouldThrow();
177		}
178		catch (InterruptedException success) {}
179		return Boolean.TRUE;
#	Line 87 | Line 181 | public class FutureTaskTest extends Test
181		Thread t = new  Thread(task);
182		t.start();
183
184	<	try{
184	>	try {
185		Thread.sleep(SHORT_DELAY_MS);
186		assertTrue(task.cancel(true));
187		t.join();
188		assertTrue(task.isDone());
189		assertTrue(task.isCancelled());
190		} catch(InterruptedException e){
191	<	fail("unexpected exception");
191	>	unexpectedException();
192		}
193		}
194
195
196	<	public void testCancelNoInterrupt(){
196	>	/**
197	>	* cancel(false) does not interrupt a running task
198	>	*/
199	>	public void testCancelNoInterrupt() {
200		FutureTask task = new FutureTask( new Callable() {
201		public Object call() {
202		try {
203	<	Thread.sleep(SHORT_DELAY_MS* 2);
203	>	Thread.sleep(MEDIUM_DELAY_MS);
204		}
205		catch (InterruptedException success) {
206	<	fail("should not interrupt");
206	>	threadFail("should not interrupt");
207		}
208		return Boolean.TRUE;
209		} });
210		Thread t = new  Thread(task);
211		t.start();
212
213	<	try{
213	>	try {
214		Thread.sleep(SHORT_DELAY_MS);
215		assertTrue(task.cancel(false));
216		t.join();
217		assertTrue(task.isDone());
218		assertTrue(task.isCancelled());
219		} catch(InterruptedException e){
220	<	fail("unexpected exception");
220	>	unexpectedException();
221		}
222		}
223
224	+	/**
225	+	* set in one thread causes get in another thread to retrieve value
226	+	*/
227		public void testGet1() {
228	<	final FutureTask ft = new FutureTask(new Callable(){
229	<	public Object call(){
230	<	try{
228	>	final FutureTask ft = new FutureTask(new Callable() {
229	>	public Object call() {
230	>	try {
231		Thread.sleep(MEDIUM_DELAY_MS);
232		} catch(InterruptedException e){
233	<	fail("unexpected exception");
233	>	threadUnexpectedException();
234		}
235		return Boolean.TRUE;
236		}
237		});
238	<	Thread t = new Thread(new Runnable(){
239	<	public void run(){
240	<	try{
238	>	Thread t = new Thread(new Runnable() {
239	>	public void run() {
240	>	try {
241		ft.get();
242		} catch(Exception e){
243	<	fail("unexpected exception");
243	>	threadUnexpectedException();
244		}
245		}
246		});
247	<	try{
247	>	try {
248		assertFalse(ft.isDone());
249		assertFalse(ft.isCancelled());
250		t.start();
#	Line 154 | Line 254 | public class FutureTaskTest extends Test
254		assertTrue(ft.isDone());
255		assertFalse(ft.isCancelled());
256		} catch(InterruptedException e){
257	<	fail("unexpected exception");
257	>	unexpectedException();
258
259		}
260		}
261
262	+	/**
263	+	* set in one thread causes timed get in another thread to retrieve value
264	+	*/
265		public void testTimedGet1() {
266	<	final FutureTask ft = new FutureTask(new Callable(){
267	<	public Object call(){
268	<	try{
266	>	final FutureTask ft = new FutureTask(new Callable() {
267	>	public Object call() {
268	>	try {
269		Thread.sleep(MEDIUM_DELAY_MS);
270		} catch(InterruptedException e){
271	<	fail("unexpected exception");
271	>	threadUnexpectedException();
272		}
273		return Boolean.TRUE;
274		}
275		});
276	<	Thread t = new Thread(new Runnable(){
277	<	public void run(){
278	<	try{
276	>	Thread t = new Thread(new Runnable() {
277	>	public void run() {
278	>	try {
279		ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
280		} catch(TimeoutException success) {
281		} catch(Exception e){
282	<	fail("unexpected exception");
282	>	threadUnexpectedException();
283		}
284		}
285		});
286	<	try{
286	>	try {
287		assertFalse(ft.isDone());
288		assertFalse(ft.isCancelled());
289		t.start();
#	Line 189 | Line 292 | public class FutureTaskTest extends Test
292		assertTrue(ft.isDone());
293		assertFalse(ft.isCancelled());
294		} catch(InterruptedException e){
295	<	fail("unexpected exception");
295	>	unexpectedException();
296
297		}
298		}
299
300	+	/**
301	+	*  Cancelling a task causes timed get in another thread to throw CancellationException
302	+	*/
303	+	public void testTimedGet_Cancellation() {
304	+	final FutureTask ft = new FutureTask(new Callable() {
305	+	public Object call() {
306	+	try {
307	+	Thread.sleep(SMALL_DELAY_MS);
308	+	threadShouldThrow();
309	+	} catch(InterruptedException e) {
310	+	}
311	+	return Boolean.TRUE;
312	+	}
313	+	});
314	+	try {
315	+	Thread t1 = new Thread(new Runnable() {
316	+	public void run() {
317	+	try {
318	+	ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
319	+	threadShouldThrow();
320	+	} catch(CancellationException success) {}
321	+	catch(Exception e){
322	+	threadUnexpectedException();
323	+	}
324	+	}
325	+	});
326	+	Thread t2 = new Thread(ft);
327	+	t1.start();
328	+	t2.start();
329	+	Thread.sleep(SHORT_DELAY_MS);
330	+	ft.cancel(true);
331	+	t1.join();
332	+	t2.join();
333	+	} catch(InterruptedException ie){
334	+	unexpectedException();
335	+	}
336	+	}
337
338	<	public void testGet_Cancellation(){
339	<	final FutureTask ft = new FutureTask(new Callable(){
340	<	public Object call(){
341	<	try{
338	>	/**
339	>	* Cancelling a task causes get in another thread to throw CancellationException
340	>	*/
341	>	public void testGet_Cancellation() {
342	>	final FutureTask ft = new FutureTask(new Callable() {
343	>	public Object call() {
344	>	try {
345		Thread.sleep(MEDIUM_DELAY_MS);
346	+	threadShouldThrow();
347		} catch(InterruptedException e){
204	–	fail("unexpected exception");
348		}
349		return Boolean.TRUE;
350		}
351		});
352		try {
353	<	Thread.sleep(SHORT_DELAY_MS);
354	<	Thread t = new Thread(new Runnable(){
355	<	public void run(){
213	<	try{
353	>	Thread t1 = new Thread(new Runnable() {
354	>	public void run() {
355	>	try {
356		ft.get();
357	<	fail("should throw");
357	>	threadShouldThrow();
358		} catch(CancellationException success){
359		}
360		catch(Exception e){
361	<	fail("unexpected exception");
361	>	threadUnexpectedException();
362		}
363		}
364		});
365	<	t.start();
365	>	Thread t2 = new Thread(ft);
366	>	t1.start();
367	>	t2.start();
368	>	Thread.sleep(SHORT_DELAY_MS);
369		ft.cancel(true);
370	<	t.join();
370	>	t1.join();
371	>	t2.join();
372		} catch(InterruptedException success){
373	<	fail("unexpected exception");
373	>	unexpectedException();
374		}
375		}
376
231	–	public void testGet_Cancellation2(){
232	–	final FutureTask ft = new FutureTask(new Callable(){
233	–	public Object call(){
234	–	try{
235	–	Thread.sleep(SHORT_DELAY_MS);
236	–	} catch(InterruptedException e) {
237	–	fail("unexpected exception");
238	–	}
239	–	return Boolean.TRUE;
240	–	}
241	–	});
242	–	try{
243	–	Thread.sleep(100);
244	–	Thread t = new Thread(new Runnable(){
245	–	public void run(){
246	–	try{
247	–	ft.get(3 * SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
248	–	fail("should throw");
249	–	} catch(CancellationException success) {}
250	–	catch(Exception e){
251	–	fail("unexpected exception");
252	–	}
253	–	}
254	–	});
255	–	t.start();
256	–	Thread.sleep(SHORT_DELAY_MS);
257	–	ft.cancel(true);
258	–	Thread.sleep(SHORT_DELAY_MS);
259	–	t.join();
260	–	} catch(InterruptedException ie){
261	–	fail("unexpected exception");
262	–	}
263	–	}
377
378	<	public void testGet_ExecutionException(){
379	<	final FutureTask ft = new FutureTask(new Callable(){
380	<	public Object call(){
378	>	/**
379	>	* A runtime exception in task causes get to throw ExecutionException
380	>	*/
381	>	public void testGet_ExecutionException() {
382	>	final FutureTask ft = new FutureTask(new Callable() {
383	>	public Object call() {
384		int i = 5/0;
385		return Boolean.TRUE;
386		}
387		});
388	<	try{
388	>	try {
389		ft.run();
390		ft.get();
391	<	fail("should throw");
391	>	shouldThrow();
392		} catch(ExecutionException success){
393		}
394		catch(Exception e){
395	<	fail("unexpected exception");
395	>	unexpectedException();
396		}
397		}
398
399	<	public void testTimedGet_ExecutionException2(){
400	<	final FutureTask ft = new FutureTask(new Callable(){
401	<	public Object call(){
399	>	/**
400	>	*  A runtime exception in task causes timed get to throw ExecutionException
401	>	*/
402	>	public void testTimedGet_ExecutionException2() {
403	>	final FutureTask ft = new FutureTask(new Callable() {
404	>	public Object call() {
405		int i = 5/0;
406		return Boolean.TRUE;
407		}
408		});
409	<	try{
409	>	try {
410		ft.run();
411		ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
412	<	fail("should throw");
412	>	shouldThrow();
413		} catch(ExecutionException success) {
414		} catch(TimeoutException success) { } // unlikely but OK
415		catch(Exception e){
416	<	fail("unexpected exception");
416	>	unexpectedException();
417		}
418		}
419
420
421	<	public void testGet_InterruptedException(){
422	<	final FutureTask ft = new FutureTask(new Callable(){
423	<	public Object call(){
424	<	return new Object();
425	<	}
426	<	});
427	<	Thread t = new Thread(new Runnable(){
428	<	public void run(){
310	<	try{
421	>	/**
422	>	* Interrupting a waiting get causes it to throw InterruptedException
423	>	*/
424	>	public void testGet_InterruptedException() {
425	>	final FutureTask ft = new FutureTask(new NoOpCallable());
426	>	Thread t = new Thread(new Runnable() {
427	>	public void run() {
428	>	try {
429		ft.get();
430	<	fail("should throw");
430	>	threadShouldThrow();
431		} catch(InterruptedException success){
432		} catch(Exception e){
433	<	fail("unexpected exception");
433	>	threadUnexpectedException();
434		}
435		}
436		});
#	Line 322 | Line 440 | public class FutureTaskTest extends Test
440		t.interrupt();
441		t.join();
442		} catch(Exception e){
443	<	fail("unexpected exception");
443	>	unexpectedException();
444		}
445		}
446
447	<	public void testTimedGet_InterruptedException2(){
448	<	final FutureTask ft = new FutureTask(new Callable(){
449	<	public Object call(){
450	<	return new Object();
451	<	}
452	<	});
453	<	Thread t = new Thread(new Runnable(){
454	<	public void run(){
455	<	try{
456	<	ft.get(100,TimeUnit.SECONDS);
339	<	fail("should throw");
447	>	/**
448	>	*  Interrupting a waiting timed get causes it to throw InterruptedException
449	>	*/
450	>	public void testTimedGet_InterruptedException2() {
451	>	final FutureTask ft = new FutureTask(new NoOpCallable());
452	>	Thread t = new Thread(new Runnable() {
453	>	public void run() {
454	>	try {
455	>	ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS);
456	>	threadShouldThrow();
457		} catch(InterruptedException success){}
458		catch(Exception e){
459	<	fail("unexpected exception");
459	>	threadUnexpectedException();
460		}
461		}
462		});
#	Line 349 | Line 466 | public class FutureTaskTest extends Test
466		t.interrupt();
467		t.join();
468		} catch(Exception e){
469	<	fail("unexpected exception");
469	>	unexpectedException();
470		}
471		}
472
473	<	public void testGet_TimeoutException(){
474	<	FutureTask ft = new FutureTask(new Callable(){
475	<	public Object call(){
476	<	return new Object();
477	<	}
478	<	});
362	<	try{
473	>	/**
474	>	* A timed out timed get throws TimeoutException
475	>	*/
476	>	public void testGet_TimeoutException() {
477	>	try {
478	>	FutureTask ft = new FutureTask(new NoOpCallable());
479		ft.get(1,TimeUnit.MILLISECONDS);
480	<	fail("should throw");
480	>	shouldThrow();
481		} catch(TimeoutException success){}
482		catch(Exception success){
483	<	fail("unexpected exception");
483	>	unexpectedException();
484		}
369	–
370	–
485		}
486
487		}

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