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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 1.9 by dl, Mon Dec 22 16:25:38 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 runAndReset() { return super.runAndReset(); }
27	>	public void set(Object x) { super.set(x); }
28	>	public void setException(Throwable t) { super.setException(t); }
29	>	}
30
31	<	public void testIsDone(){
32	<	FutureTask task = new FutureTask( new Callable() {
33	<	public Object call() { return Boolean.TRUE; } });
31	>	/**
32	>	* Creating a future with a null callable throws NPE
33	>	*/
34	>	public void testConstructor() {
35	>	try {
36	>	FutureTask task = new FutureTask(null);
37	>	shouldThrow();
38	>	}
39	>	catch(NullPointerException success) {
40	>	}
41	>	}
42	>
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	>	shouldThrow();
50	>	}
51	>	catch(NullPointerException success) {
52	>	}
53	>	}
54	>
55	>	/**
56	>	* isDone is true when a task completes
57	>	*/
58	>	public void testIsDone() {
59	>	FutureTask task = new FutureTask( new NoOpCallable());
60		task.run();
61		assertTrue(task.isDone());
62		assertFalse(task.isCancelled());
63		}
64
65	+	/**
66	+	* runAndReset of a non-cancelled task succeeds
67	+	*/
68	+	public void testRunAndReset() {
69	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
70	+	assertTrue(task.runAndReset());
71	+	assertFalse(task.isDone());
72	+	}
73	+
74	+	/**
75	+	* runAndReset after cancellation fails
76	+	*/
77	+	public void testResetAfterCancel() {
78	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
79	+	assertTrue(task.cancel(false));
80	+	assertFalse(task.runAndReset());
81	+	assertTrue(task.isDone());
82	+	assertTrue(task.isCancelled());
83	+	}
84	+
85	+
86	+
87	+	/**
88	+	* setting value gauses get to return it
89	+	*/
90	+	public void testSet() {
91	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
92	+	task.set(one);
93	+	try {
94	+	assertEquals(task.get(), one);
95	+	}
96	+	catch(Exception e) {
97	+	unexpectedException();
98	+	}
99	+	}
100	+
101	+	/**
102	+	* setException causes get to throw ExecutionException
103	+	*/
104	+	public void testSetException() {
105	+	Exception nse = new NoSuchElementException();
106	+	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
107	+	task.setException(nse);
108	+	try {
109	+	Object x = task.get();
110	+	shouldThrow();
111	+	}
112	+	catch(ExecutionException ee) {
113	+	Throwable cause = ee.getCause();
114	+	assertEquals(cause, nse);
115	+	}
116	+	catch(Exception e) {
117	+	unexpectedException();
118	+	}
119	+	}
120	+
121	+	/**
122	+	*  Cancelling before running succeeds
123	+	*/
124		public void testCancelBeforeRun() {
125	<	FutureTask task = new FutureTask( new Callable() {
34	<	public Object call() { return Boolean.TRUE; } });
125	>	FutureTask task = new FutureTask( new NoOpCallable());
126		assertTrue(task.cancel(false));
127		task.run();
128		assertTrue(task.isDone());
129		assertTrue(task.isCancelled());
130		}
131
132	+	/**
133	+	* Cancel(true) before run succeeds
134	+	*/
135		public void testCancelBeforeRun2() {
136	<	FutureTask task = new FutureTask( new Callable() {
43	<	public Object call() { return Boolean.TRUE; } });
136	>	FutureTask task = new FutureTask( new NoOpCallable());
137		assertTrue(task.cancel(true));
138		task.run();
139		assertTrue(task.isDone());
140		assertTrue(task.isCancelled());
141		}
142
143	+	/**
144	+	* cancel of a completed task fails
145	+	*/
146		public void testCancelAfterRun() {
147	<	FutureTask task = new FutureTask( new Callable() {
52	<	public Object call() { return Boolean.TRUE; } });
147	>	FutureTask task = new FutureTask( new NoOpCallable());
148		task.run();
149		assertFalse(task.cancel(false));
150		assertTrue(task.isDone());
151		assertFalse(task.isCancelled());
152		}
153
154	<	public void testCancelInterrupt(){
154	>	/**
155	>	* cancel(true) interrupts a running task
156	>	*/
157	>	public void testCancelInterrupt() {
158		FutureTask task = new FutureTask( new Callable() {
159		public Object call() {
160		try {
161	<	Thread.sleep(SHORT_DELAY_MS* 2);
162	<	fail("should throw");
161	>	Thread.sleep(MEDIUM_DELAY_MS);
162	>	threadShouldThrow();
163		}
164		catch (InterruptedException success) {}
165		return Boolean.TRUE;
#	Line 69 | Line 167 | public class FutureTaskTest extends Test
167		Thread t = new  Thread(task);
168		t.start();
169
170	<	try{
170	>	try {
171		Thread.sleep(SHORT_DELAY_MS);
172		assertTrue(task.cancel(true));
173		t.join();
174		assertTrue(task.isDone());
175		assertTrue(task.isCancelled());
176		} catch(InterruptedException e){
177	<	fail("unexpected exception");
177	>	unexpectedException();
178		}
179		}
180
181
182	<	public void testCancelNoInterrupt(){
182	>	/**
183	>	* cancel(false) does not interrupt a running task
184	>	*/
185	>	public void testCancelNoInterrupt() {
186		FutureTask task = new FutureTask( new Callable() {
187		public Object call() {
188		try {
189	<	Thread.sleep(SHORT_DELAY_MS* 2);
189	>	Thread.sleep(MEDIUM_DELAY_MS);
190		}
191		catch (InterruptedException success) {
192	<	fail("should not interrupt");
192	>	threadFail("should not interrupt");
193		}
194		return Boolean.TRUE;
195		} });
196		Thread t = new  Thread(task);
197		t.start();
198
199	<	try{
199	>	try {
200		Thread.sleep(SHORT_DELAY_MS);
201		assertTrue(task.cancel(false));
202		t.join();
203		assertTrue(task.isDone());
204		assertTrue(task.isCancelled());
205		} catch(InterruptedException e){
206	<	fail("unexpected exception");
206	>	unexpectedException();
207		}
208		}
209
210	+	/**
211	+	* set in one thread causes get in another thread to retrieve value
212	+	*/
213		public void testGet1() {
214	<	final FutureTask ft = new FutureTask(new Callable(){
215	<	public Object call(){
216	<	try{
214	>	final FutureTask ft = new FutureTask(new Callable() {
215	>	public Object call() {
216	>	try {
217		Thread.sleep(MEDIUM_DELAY_MS);
218		} catch(InterruptedException e){
219	<	fail("unexpected exception");
219	>	threadUnexpectedException();
220		}
221		return Boolean.TRUE;
222		}
223		});
224	<	Thread t = new Thread(new Runnable(){
225	<	public void run(){
226	<	try{
224	>	Thread t = new Thread(new Runnable() {
225	>	public void run() {
226	>	try {
227		ft.get();
228		} catch(Exception e){
229	<	fail("unexpected exception");
229	>	threadUnexpectedException();
230		}
231		}
232		});
233	<	try{
233	>	try {
234		assertFalse(ft.isDone());
235		assertFalse(ft.isCancelled());
236		t.start();
#	Line 136 | Line 240 | public class FutureTaskTest extends Test
240		assertTrue(ft.isDone());
241		assertFalse(ft.isCancelled());
242		} catch(InterruptedException e){
243	<	fail("unexpected exception");
243	>	unexpectedException();
244
245		}
246		}
247
248	+	/**
249	+	* set in one thread causes timed get in another thread to retrieve value
250	+	*/
251		public void testTimedGet1() {
252	<	final FutureTask ft = new FutureTask(new Callable(){
253	<	public Object call(){
254	<	try{
252	>	final FutureTask ft = new FutureTask(new Callable() {
253	>	public Object call() {
254	>	try {
255		Thread.sleep(MEDIUM_DELAY_MS);
256		} catch(InterruptedException e){
257	<	fail("unexpected exception");
257	>	threadUnexpectedException();
258		}
259		return Boolean.TRUE;
260		}
261		});
262	<	Thread t = new Thread(new Runnable(){
263	<	public void run(){
264	<	try{
262	>	Thread t = new Thread(new Runnable() {
263	>	public void run() {
264	>	try {
265		ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
266		} catch(TimeoutException success) {
267		} catch(Exception e){
268	<	fail("unexpected exception");
268	>	threadUnexpectedException();
269		}
270		}
271		});
272	<	try{
272	>	try {
273		assertFalse(ft.isDone());
274		assertFalse(ft.isCancelled());
275		t.start();
#	Line 171 | Line 278 | public class FutureTaskTest extends Test
278		assertTrue(ft.isDone());
279		assertFalse(ft.isCancelled());
280		} catch(InterruptedException e){
281	<	fail("unexpected exception");
281	>	unexpectedException();
282
283		}
284		}
285
286	+	/**
287	+	*  Cancelling a task causes timed get in another thread to throw CancellationException
288	+	*/
289	+	public void testTimedGet_Cancellation() {
290	+	final FutureTask ft = new FutureTask(new Callable() {
291	+	public Object call() {
292	+	try {
293	+	Thread.sleep(SMALL_DELAY_MS);
294	+	threadShouldThrow();
295	+	} catch(InterruptedException e) {
296	+	}
297	+	return Boolean.TRUE;
298	+	}
299	+	});
300	+	try {
301	+	Thread t1 = new Thread(new Runnable() {
302	+	public void run() {
303	+	try {
304	+	ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
305	+	threadShouldThrow();
306	+	} catch(CancellationException success) {}
307	+	catch(Exception e){
308	+	threadUnexpectedException();
309	+	}
310	+	}
311	+	});
312	+	Thread t2 = new Thread(ft);
313	+	t1.start();
314	+	t2.start();
315	+	Thread.sleep(SHORT_DELAY_MS);
316	+	ft.cancel(true);
317	+	t1.join();
318	+	t2.join();
319	+	} catch(InterruptedException ie){
320	+	unexpectedException();
321	+	}
322	+	}
323
324	<	public void testGet_Cancellation(){
325	<	final FutureTask ft = new FutureTask(new Callable(){
326	<	public Object call(){
327	<	try{
324	>	/**
325	>	* Cancelling a task causes get in another thread to throw CancellationException
326	>	*/
327	>	public void testGet_Cancellation() {
328	>	final FutureTask ft = new FutureTask(new Callable() {
329	>	public Object call() {
330	>	try {
331		Thread.sleep(MEDIUM_DELAY_MS);
332	+	threadShouldThrow();
333		} catch(InterruptedException e){
186	–	fail("unexpected exception");
334		}
335		return Boolean.TRUE;
336		}
337		});
338		try {
339	<	Thread.sleep(SHORT_DELAY_MS);
340	<	Thread t = new Thread(new Runnable(){
341	<	public void run(){
195	<	try{
339	>	Thread t1 = new Thread(new Runnable() {
340	>	public void run() {
341	>	try {
342		ft.get();
343	<	fail("should throw");
343	>	threadShouldThrow();
344		} catch(CancellationException success){
345		}
346		catch(Exception e){
347	<	fail("unexpected exception");
347	>	threadUnexpectedException();
348		}
349		}
350		});
351	<	t.start();
351	>	Thread t2 = new Thread(ft);
352	>	t1.start();
353	>	t2.start();
354	>	Thread.sleep(SHORT_DELAY_MS);
355		ft.cancel(true);
356	<	t.join();
356	>	t1.join();
357	>	t2.join();
358		} catch(InterruptedException success){
359	<	fail("unexpected exception");
359	>	unexpectedException();
360		}
361		}
362
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	–	}
363
364	<	public void testGet_ExecutionException(){
365	<	final FutureTask ft = new FutureTask(new Callable(){
366	<	public Object call(){
364	>	/**
365	>	* A runtime exception in task causes get to throw ExecutionException
366	>	*/
367	>	public void testGet_ExecutionException() {
368	>	final FutureTask ft = new FutureTask(new Callable() {
369	>	public Object call() {
370		int i = 5/0;
371		return Boolean.TRUE;
372		}
373		});
374	<	try{
374	>	try {
375		ft.run();
376		ft.get();
377	<	fail("should throw");
377	>	shouldThrow();
378		} catch(ExecutionException success){
379		}
380		catch(Exception e){
381	<	fail("unexpected exception");
381	>	unexpectedException();
382		}
383		}
384
385	<	public void testTimedGet_ExecutionException2(){
386	<	final FutureTask ft = new FutureTask(new Callable(){
387	<	public Object call(){
385	>	/**
386	>	*  A runtime exception in task causes timed get to throw ExecutionException
387	>	*/
388	>	public void testTimedGet_ExecutionException2() {
389	>	final FutureTask ft = new FutureTask(new Callable() {
390	>	public Object call() {
391		int i = 5/0;
392		return Boolean.TRUE;
393		}
394		});
395	<	try{
395	>	try {
396		ft.run();
397		ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
398	<	fail("should throw");
398	>	shouldThrow();
399		} catch(ExecutionException success) {
400		} catch(TimeoutException success) { } // unlikely but OK
401		catch(Exception e){
402	<	fail("unexpected exception");
402	>	unexpectedException();
403		}
404		}
405
406
407	<	public void testGet_InterruptedException(){
408	<	final FutureTask ft = new FutureTask(new Callable(){
409	<	public Object call(){
410	<	return new Object();
411	<	}
412	<	});
413	<	Thread t = new Thread(new Runnable(){
414	<	public void run(){
292	<	try{
407	>	/**
408	>	* Interrupting a waiting get causes it to throw InterruptedException
409	>	*/
410	>	public void testGet_InterruptedException() {
411	>	final FutureTask ft = new FutureTask(new NoOpCallable());
412	>	Thread t = new Thread(new Runnable() {
413	>	public void run() {
414	>	try {
415		ft.get();
416	<	fail("should throw");
416	>	threadShouldThrow();
417		} catch(InterruptedException success){
418		} catch(Exception e){
419	<	fail("unexpected exception");
419	>	threadUnexpectedException();
420		}
421		}
422		});
#	Line 304 | Line 426 | public class FutureTaskTest extends Test
426		t.interrupt();
427		t.join();
428		} catch(Exception e){
429	<	fail("unexpected exception");
429	>	unexpectedException();
430		}
431		}
432
433	<	public void testTimedGet_InterruptedException2(){
434	<	final FutureTask ft = new FutureTask(new Callable(){
435	<	public Object call(){
436	<	return new Object();
437	<	}
438	<	});
439	<	Thread t = new Thread(new Runnable(){
440	<	public void run(){
441	<	try{
442	<	ft.get(100,TimeUnit.SECONDS);
321	<	fail("should throw");
433	>	/**
434	>	*  Interrupting a waiting timed get causes it to throw InterruptedException
435	>	*/
436	>	public void testTimedGet_InterruptedException2() {
437	>	final FutureTask ft = new FutureTask(new NoOpCallable());
438	>	Thread t = new Thread(new Runnable() {
439	>	public void run() {
440	>	try {
441	>	ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS);
442	>	threadShouldThrow();
443		} catch(InterruptedException success){}
444		catch(Exception e){
445	<	fail("unexpected exception");
445	>	threadUnexpectedException();
446		}
447		}
448		});
#	Line 331 | Line 452 | public class FutureTaskTest extends Test
452		t.interrupt();
453		t.join();
454		} catch(Exception e){
455	<	fail("unexpected exception");
455	>	unexpectedException();
456		}
457		}
458
459	<	public void testGet_TimeoutException(){
460	<	FutureTask ft = new FutureTask(new Callable(){
461	<	public Object call(){
462	<	return new Object();
463	<	}
464	<	});
344	<	try{
459	>	/**
460	>	* A timed out timed get throws TimeoutException
461	>	*/
462	>	public void testGet_TimeoutException() {
463	>	try {
464	>	FutureTask ft = new FutureTask(new NoOpCallable());
465		ft.get(1,TimeUnit.MILLISECONDS);
466	<	fail("should throw");
466	>	shouldThrow();
467		} catch(TimeoutException success){}
468		catch(Exception success){
469	<	fail("unexpected exception");
469	>	unexpectedException();
470		}
351	–
352	–
471		}
472
473		}

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