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

Comparing jsr166/src/test/tck/ExecutorsTest.java (file contents):
Revision 1.10 by tim, Wed Dec 10 01:51:12 2003 UTC vs.
Revision 1.35 by jsr166, Mon Oct 11 08:47:04 2010 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
10		import junit.framework.*;
11		import java.util.*;
12		import java.util.concurrent.*;
13	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
14		import java.math.BigInteger;
15		import java.security.*;
16
17	<	public class ExecutorsTest extends JSR166TestCase{
17	>	public class ExecutorsTest extends JSR166TestCase {
18		public static void main(String[] args) {
19	<	junit.textui.TestRunner.run (suite());
19	>	junit.textui.TestRunner.run(suite());
20		}
21		public static Test suite() {
22		return new TestSuite(ExecutorsTest.class);
23		}
24
23	–	static class TimedCallable<T> implements Callable<T> {
24	–	private final ExecutorService exec;
25	–	private final Callable<T> func;
26	–	private final long msecs;
27	–
28	–	TimedCallable(ExecutorService exec, Callable<T> func, long msecs) {
29	–	this.exec = exec;
30	–	this.func = func;
31	–	this.msecs = msecs;
32	–	}
33	–
34	–	public T call() throws Exception {
35	–	Future<T> ftask = exec.submit(func);
36	–	try {
37	–	return ftask.get(msecs, TimeUnit.MILLISECONDS);
38	–	} finally {
39	–	ftask.cancel(true);
40	–	}
41	–	}
42	–	}
43	–
44	–
45	–	private static class Fib implements Callable<BigInteger> {
46	–	private final BigInteger n;
47	–	Fib(long n) {
48	–	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
49	–	this.n = BigInteger.valueOf(n);
50	–	}
51	–	public BigInteger call() {
52	–	BigInteger f1 = BigInteger.ONE;
53	–	BigInteger f2 = f1;
54	–	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
55	–	BigInteger t = f1.add(f2);
56	–	f1 = f2;
57	–	f2 = t;
58	–	}
59	–	return f1;
60	–	}
61	–	};
62	–
25		/**
26		* A newCachedThreadPool can execute runnables
27		*/
#	Line 68 | Line 30 | public class ExecutorsTest extends JSR16
30		e.execute(new NoOpRunnable());
31		e.execute(new NoOpRunnable());
32		e.execute(new NoOpRunnable());
33	<	e.shutdown();
33	>	joinPool(e);
34		}
35
36		/**
#	Line 79 | Line 41 | public class ExecutorsTest extends JSR16
41		e.execute(new NoOpRunnable());
42		e.execute(new NoOpRunnable());
43		e.execute(new NoOpRunnable());
44	<	e.shutdown();
44	>	joinPool(e);
45		}
46
47		/**
#	Line 89 | Line 51 | public class ExecutorsTest extends JSR16
51		try {
52		ExecutorService e = Executors.newCachedThreadPool(null);
53		shouldThrow();
54	<	}
93	<	catch(NullPointerException success) {
94	<	}
54	>	} catch (NullPointerException success) {}
55		}
56
57
#	Line 103 | Line 63 | public class ExecutorsTest extends JSR16
63		e.execute(new NoOpRunnable());
64		e.execute(new NoOpRunnable());
65		e.execute(new NoOpRunnable());
66	<	e.shutdown();
66	>	joinPool(e);
67		}
68
69		/**
#	Line 114 | Line 74 | public class ExecutorsTest extends JSR16
74		e.execute(new NoOpRunnable());
75		e.execute(new NoOpRunnable());
76		e.execute(new NoOpRunnable());
77	<	e.shutdown();
77	>	joinPool(e);
78		}
79
80		/**
#	Line 124 | Line 84 | public class ExecutorsTest extends JSR16
84		try {
85		ExecutorService e = Executors.newSingleThreadExecutor(null);
86		shouldThrow();
87	<	}
88	<	catch(NullPointerException success) {
87	>	} catch (NullPointerException success) {}
88	>	}
89	>
90	>	/**
91	>	* A new SingleThreadExecutor cannot be casted to concrete implementation
92	>	*/
93	>	public void testCastNewSingleThreadExecutor() {
94	>	ExecutorService e = Executors.newSingleThreadExecutor();
95	>	try {
96	>	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
97	>	shouldThrow();
98	>	} catch (ClassCastException success) {
99	>	} finally {
100	>	joinPool(e);
101		}
102		}
103
104	+
105		/**
106		* A new newFixedThreadPool can execute runnables
107		*/
#	Line 137 | Line 110 | public class ExecutorsTest extends JSR16
110		e.execute(new NoOpRunnable());
111		e.execute(new NoOpRunnable());
112		e.execute(new NoOpRunnable());
113	<	e.shutdown();
113	>	joinPool(e);
114		}
115
116		/**
#	Line 148 | Line 121 | public class ExecutorsTest extends JSR16
121		e.execute(new NoOpRunnable());
122		e.execute(new NoOpRunnable());
123		e.execute(new NoOpRunnable());
124	<	e.shutdown();
124	>	joinPool(e);
125		}
126
127		/**
#	Line 158 | Line 131 | public class ExecutorsTest extends JSR16
131		try {
132		ExecutorService e = Executors.newFixedThreadPool(2, null);
133		shouldThrow();
134	<	}
162	<	catch(NullPointerException success) {
163	<	}
134	>	} catch (NullPointerException success) {}
135		}
136
137		/**
#	Line 170 | Line 141 | public class ExecutorsTest extends JSR16
141		try {
142		ExecutorService e = Executors.newFixedThreadPool(0);
143		shouldThrow();
144	+	} catch (IllegalArgumentException success) {}
145	+	}
146	+
147	+
148	+	/**
149	+	* An unconfigurable newFixedThreadPool can execute runnables
150	+	*/
151	+	public void testunconfigurableExecutorService() {
152	+	ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
153	+	e.execute(new NoOpRunnable());
154	+	e.execute(new NoOpRunnable());
155	+	e.execute(new NoOpRunnable());
156	+	joinPool(e);
157	+	}
158	+
159	+	/**
160	+	* unconfigurableExecutorService(null) throws NPE
161	+	*/
162	+	public void testunconfigurableExecutorServiceNPE() {
163	+	try {
164	+	ExecutorService e = Executors.unconfigurableExecutorService(null);
165	+	shouldThrow();
166	+	} catch (NullPointerException success) {}
167	+	}
168	+
169	+	/**
170	+	* unconfigurableScheduledExecutorService(null) throws NPE
171	+	*/
172	+	public void testunconfigurableScheduledExecutorServiceNPE() {
173	+	try {
174	+	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
175	+	shouldThrow();
176	+	} catch (NullPointerException success) {}
177	+	}
178	+
179	+
180	+	/**
181	+	* a newSingleThreadScheduledExecutor successfully runs delayed task
182	+	*/
183	+	public void testNewSingleThreadScheduledExecutor() throws Exception {
184	+	ScheduledExecutorService p = Executors.newSingleThreadScheduledExecutor();
185	+	try {
186	+	final CountDownLatch done = new CountDownLatch(1);
187	+	final Runnable task = new CheckedRunnable() {
188	+	public void realRun() {
189	+	done.countDown();
190	+	}};
191	+	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
192	+	SHORT_DELAY_MS, MILLISECONDS);
193	+	assertFalse(f.isDone());
194	+	assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS));
195	+	assertTrue(f.isDone());
196	+	assertEquals(Boolean.TRUE, f.get());
197	+	} finally {
198	+	joinPool(p);
199		}
200	<	catch(IllegalArgumentException success) {
200	>	}
201	>
202	>	/**
203	>	* a newScheduledThreadPool successfully runs delayed task
204	>	*/
205	>	public void testnewScheduledThreadPool() throws Exception {
206	>	ScheduledExecutorService p = Executors.newScheduledThreadPool(2);
207	>	try {
208	>	final CountDownLatch done = new CountDownLatch(1);
209	>	final Runnable task = new CheckedRunnable() {
210	>	public void realRun() {
211	>	done.countDown();
212	>	}};
213	>	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
214	>	SHORT_DELAY_MS, MILLISECONDS);
215	>	assertFalse(f.isDone());
216	>	assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS));
217	>	assertTrue(f.isDone());
218	>	assertEquals(Boolean.TRUE, f.get());
219	>	} finally {
220	>	joinPool(p);
221		}
222		}
223
224	+	/**
225	+	* an unconfigurable newScheduledThreadPool successfully runs delayed task
226	+	*/
227	+	public void testunconfigurableScheduledExecutorService() throws Exception {
228	+	ScheduledExecutorService p =
229	+	Executors.unconfigurableScheduledExecutorService
230	+	(Executors.newScheduledThreadPool(2));
231	+	try {
232	+	final CountDownLatch done = new CountDownLatch(1);
233	+	final Runnable task = new CheckedRunnable() {
234	+	public void realRun() {
235	+	done.countDown();
236	+	}};
237	+	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
238	+	SHORT_DELAY_MS, MILLISECONDS);
239	+	assertFalse(f.isDone());
240	+	assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS));
241	+	assertTrue(f.isDone());
242	+	assertEquals(Boolean.TRUE, f.get());
243	+	} finally {
244	+	joinPool(p);
245	+	}
246	+	}
247
248		/**
249	<	*  timeouts from execute will time out if they compute too long.
249	>	* Future.get on submitted tasks will time out if they compute too long.
250		*/
251	<	public void testTimedCallable() {
252	<	int N = 10000;
253	<	ExecutorService executor = Executors.newSingleThreadExecutor();
254	<	List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
255	<	try {
256	<	long startTime = System.currentTimeMillis();
257	<
258	<	long i = 0;
259	<	while (tasks.size() < N) {
260	<	tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
261	<	i += 10;
262	<	}
263	<
264	<	int iters = 0;
196	<	BigInteger sum = BigInteger.ZERO;
197	<	for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
251	>	public void testTimedCallable() throws Exception {
252	>	final Runnable sleeper = new CheckedInterruptedRunnable() {
253	>	public void realRun() throws InterruptedException {
254	>	Thread.sleep(LONG_DELAY_MS);
255	>	}};
256	>	for (ExecutorService executor :
257	>	new ExecutorService[] {
258	>	Executors.newSingleThreadExecutor(),
259	>	Executors.newCachedThreadPool(),
260	>	Executors.newFixedThreadPool(2),
261	>	Executors.newScheduledThreadPool(2),
262	>	}) {
263	>	try {
264	>	Future future = executor.submit(sleeper);
265		try {
266	<	++iters;
267	<	sum = sum.add(it.next().call());
268	<	}
269	<	catch (TimeoutException success) {
270	<	assertTrue(iters > 0);
204	<	return;
205	<	}
206	<	catch (Exception e) {
207	<	unexpectedException();
266	>	future.get(SHORT_DELAY_MS, MILLISECONDS);
267	>	shouldThrow();
268	>	} catch (TimeoutException success) {
269	>	} finally {
270	>	future.cancel(true);
271		}
272		}
273	<	// if by chance we didn't ever time out, total time must be small
274	<	long elapsed = System.currentTimeMillis() - startTime;
275	<	assertTrue(elapsed < N);
213	<	}
214	<	finally {
215	<	joinPool(executor);
273	>	finally {
274	>	joinPool(executor);
275	>	}
276		}
277		}
278
279	<
279	>
280		/**
281		* ThreadPoolExecutor using defaultThreadFactory has
282		* specified group, priority, daemon status, and name
283		*/
284	<	public void testDefaultThreadFactory() {
284	>	public void testDefaultThreadFactory() throws Exception {
285		final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
286	<	Runnable r = new Runnable() {
287	<	public void run() {
286	>	Runnable r = new CheckedRunnable() {
287	>	public void realRun() {
288	>	try {
289		Thread current = Thread.currentThread();
290	<	threadAssertTrue(!current.isDaemon());
291	<	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
290	>	assertTrue(!current.isDaemon());
291	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
292		ThreadGroup g = current.getThreadGroup();
293		SecurityManager s = System.getSecurityManager();
294		if (s != null)
295	<	threadAssertTrue(g == s.getThreadGroup());
295	>	assertTrue(g == s.getThreadGroup());
296		else
297	<	threadAssertTrue(g == egroup);
297	>	assertTrue(g == egroup);
298		String name = current.getName();
299	<	threadAssertTrue(name.endsWith("thread-1"));
299	>	assertTrue(name.endsWith("thread-1"));
300	>	} catch (SecurityException ok) {
301	>	// Also pass if not allowed to change setting
302		}
303	<	};
303	>	}};
304		ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
305	<
305	>
306		e.execute(r);
307	<	e.shutdown();
307	>	try {
308	>	e.shutdown();
309	>	} catch (SecurityException ok) {
310	>	}
311	>
312		try {
313		Thread.sleep(SHORT_DELAY_MS);
247	–	} catch (Exception eX) {
248	–	unexpectedException();
314		} finally {
315		joinPool(e);
316		}
#	Line 256 | Line 321 | public class ExecutorsTest extends JSR16
321		* specified group, priority, daemon status, name,
322		* access control context and context class loader
323		*/
324	<	public void testPrivilegedThreadFactory() {
325	<	Policy savedPolicy = Policy.getPolicy();
326	<	AdjustablePolicy policy = new AdjustablePolicy();
327	<	policy.addPermission(new RuntimePermission("getContextClassLoader"));
328	<	policy.addPermission(new RuntimePermission("setContextClassLoader"));
329	<	Policy.setPolicy(policy);
330	<	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
331	<	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
332	<	final AccessControlContext thisacc = AccessController.getContext();
333	<	Runnable r = new Runnable() {
334	<	public void run() {
335	<	Thread current = Thread.currentThread();
336	<	threadAssertTrue(!current.isDaemon());
337	<	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
338	<	ThreadGroup g = current.getThreadGroup();
339	<	SecurityManager s = System.getSecurityManager();
340	<	if (s != null)
341	<	threadAssertTrue(g == s.getThreadGroup());
342	<	else
343	<	threadAssertTrue(g == egroup);
344	<	String name = current.getName();
345	<	threadAssertTrue(name.endsWith("thread-1"));
346	<	threadAssertTrue(thisccl == current.getContextClassLoader());
347	<	threadAssertTrue(thisacc.equals(AccessController.getContext()));
348	<	}
349	<	};
350	<	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
351	<
352	<	Policy.setPolicy(savedPolicy);
353	<	e.execute(r);
354	<	e.shutdown();
355	<	try {
356	<	Thread.sleep(SHORT_DELAY_MS);
357	<	} catch (Exception ex) {
358	<	unexpectedException();
359	<	} finally {
360	<	joinPool(e);
324	>	public void testPrivilegedThreadFactory() throws Exception {
325	>	Runnable r = new CheckedRunnable() {
326	>	public void realRun() throws Exception {
327	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
328	>	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
329	>	final AccessControlContext thisacc = AccessController.getContext();
330	>	Runnable r = new CheckedRunnable() {
331	>	public void realRun() {
332	>	Thread current = Thread.currentThread();
333	>	assertTrue(!current.isDaemon());
334	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
335	>	ThreadGroup g = current.getThreadGroup();
336	>	SecurityManager s = System.getSecurityManager();
337	>	if (s != null)
338	>	assertTrue(g == s.getThreadGroup());
339	>	else
340	>	assertTrue(g == egroup);
341	>	String name = current.getName();
342	>	assertTrue(name.endsWith("thread-1"));
343	>	assertSame(thisccl, current.getContextClassLoader());
344	>	assertEquals(thisacc, AccessController.getContext());
345	>	}};
346	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
347	>	e.execute(r);
348	>	e.shutdown();
349	>	Thread.sleep(SHORT_DELAY_MS);
350	>	joinPool(e);
351	>	}};
352	>
353	>	runWithPermissions(r,
354	>	new RuntimePermission("getClassLoader"),
355	>	new RuntimePermission("setContextClassLoader"),
356	>	new RuntimePermission("modifyThread"));
357	>	}
358	>
359	>	boolean haveCCLPermissions() {
360	>	SecurityManager sm = System.getSecurityManager();
361	>	if (sm != null) {
362	>	try {
363	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
364	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
365	>	} catch (AccessControlException e) {
366	>	return false;
367	>	}
368	>	}
369	>	return true;
370	>	}
371	>
372	>	void checkCCL() {
373	>	SecurityManager sm = System.getSecurityManager();
374	>	if (sm != null) {
375	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
376	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
377	>	}
378	>	}
379	>
380	>	class CheckCCL implements Callable<Object> {
381	>	public Object call() {
382	>	checkCCL();
383	>	return null;
384		}
385	+	}
386	+
387	+
388	+	/**
389	+	* Without class loader permissions, creating
390	+	* privilegedCallableUsingCurrentClassLoader throws ACE
391	+	*/
392	+	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
393	+	Runnable r = new CheckedRunnable() {
394	+	public void realRun() throws Exception {
395	+	if (System.getSecurityManager() == null)
396	+	return;
397	+	try {
398	+	Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
399	+	shouldThrow();
400	+	} catch (AccessControlException success) {}
401	+	}};
402	+
403	+	runWithoutPermissions(r);
404	+	}
405	+
406	+	/**
407	+	* With class loader permissions, calling
408	+	* privilegedCallableUsingCurrentClassLoader does not throw ACE
409	+	*/
410	+	public void testprivilegedCallableUsingCCLWithPrivs() throws Exception {
411	+	Runnable r = new CheckedRunnable() {
412	+	public void realRun() throws Exception {
413	+	Executors.privilegedCallableUsingCurrentClassLoader
414	+	(new NoOpCallable())
415	+	.call();
416	+	}};
417	+
418	+	runWithPermissions(r,
419	+	new RuntimePermission("getClassLoader"),
420	+	new RuntimePermission("setContextClassLoader"));
421	+	}
422	+
423	+	/**
424	+	* Without permissions, calling privilegedCallable throws ACE
425	+	*/
426	+	public void testprivilegedCallableWithNoPrivs() throws Exception {
427	+	// Avoid classloader-related SecurityExceptions in swingui.TestRunner
428	+	Executors.privilegedCallable(new CheckCCL());
429	+
430	+	Runnable r = new CheckedRunnable() {
431	+	public void realRun() throws Exception {
432	+	if (System.getSecurityManager() == null)
433	+	return;
434	+	Callable task = Executors.privilegedCallable(new CheckCCL());
435	+	try {
436	+	task.call();
437	+	shouldThrow();
438	+	} catch (AccessControlException success) {}
439	+	}};
440	+
441	+	runWithoutPermissions(r);
442	+
443	+	// It seems rather difficult to test that the
444	+	// AccessControlContext of the privilegedCallable is used
445	+	// instead of its caller.  Below is a failed attempt to do
446	+	// that, which does not work because the AccessController
447	+	// cannot capture the internal state of the current Policy.
448	+	// It would be much more work to differentiate based on,
449	+	// e.g. CodeSource.
450	+
451	+	//         final AccessControlContext[] noprivAcc = new AccessControlContext[1];
452	+	//         final Callable[] task = new Callable[1];
453	+
454	+	//         runWithPermissions
455	+	//             (new CheckedRunnable() {
456	+	//                 public void realRun() {
457	+	//                     if (System.getSecurityManager() == null)
458	+	//                         return;
459	+	//                     noprivAcc[0] = AccessController.getContext();
460	+	//                     task[0] = Executors.privilegedCallable(new CheckCCL());
461	+	//                     try {
462	+	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
463	+	//                                                           public Void run() {
464	+	//                                                               checkCCL();
465	+	//                                                               return null;
466	+	//                                                           }}, noprivAcc[0]);
467	+	//                         shouldThrow();
468	+	//                     } catch (AccessControlException success) {}
469	+	//                 }});
470	+
471	+	//         runWithPermissions
472	+	//             (new CheckedRunnable() {
473	+	//                 public void realRun() throws Exception {
474	+	//                     if (System.getSecurityManager() == null)
475	+	//                         return;
476	+	//                     // Verify that we have an underprivileged ACC
477	+	//                     try {
478	+	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
479	+	//                                                           public Void run() {
480	+	//                                                               checkCCL();
481	+	//                                                               return null;
482	+	//                                                           }}, noprivAcc[0]);
483	+	//                         shouldThrow();
484	+	//                     } catch (AccessControlException success) {}
485	+
486	+	//                     try {
487	+	//                         task[0].call();
488	+	//                         shouldThrow();
489	+	//                     } catch (AccessControlException success) {}
490	+	//                 }},
491	+	//              new RuntimePermission("getClassLoader"),
492	+	//              new RuntimePermission("setContextClassLoader"));
493	+	}
494	+
495	+	/**
496	+	* With permissions, calling privilegedCallable succeeds
497	+	*/
498	+	public void testprivilegedCallableWithPrivs() throws Exception {
499	+	Runnable r = new CheckedRunnable() {
500	+	public void realRun() throws Exception {
501	+	Executors.privilegedCallable(new CheckCCL()).call();
502	+	}};
503
504	+	runWithPermissions(r,
505	+	new RuntimePermission("getClassLoader"),
506	+	new RuntimePermission("setContextClassLoader"));
507		}
508
509	+	/**
510	+	* callable(Runnable) returns null when called
511	+	*/
512	+	public void testCallable1() throws Exception {
513	+	Callable c = Executors.callable(new NoOpRunnable());
514	+	assertNull(c.call());
515	+	}
516	+
517	+	/**
518	+	* callable(Runnable, result) returns result when called
519	+	*/
520	+	public void testCallable2() throws Exception {
521	+	Callable c = Executors.callable(new NoOpRunnable(), one);
522	+	assertSame(one, c.call());
523	+	}
524	+
525	+	/**
526	+	* callable(PrivilegedAction) returns its result when called
527	+	*/
528	+	public void testCallable3() throws Exception {
529	+	Callable c = Executors.callable(new PrivilegedAction() {
530	+	public Object run() { return one; }});
531	+	assertSame(one, c.call());
532	+	}
533	+
534	+	/**
535	+	* callable(PrivilegedExceptionAction) returns its result when called
536	+	*/
537	+	public void testCallable4() throws Exception {
538	+	Callable c = Executors.callable(new PrivilegedExceptionAction() {
539	+	public Object run() { return one; }});
540	+	assertSame(one, c.call());
541	+	}
542	+
543	+
544	+	/**
545	+	* callable(null Runnable) throws NPE
546	+	*/
547	+	public void testCallableNPE1() {
548	+	try {
549	+	Callable c = Executors.callable((Runnable) null);
550	+	shouldThrow();
551	+	} catch (NullPointerException success) {}
552	+	}
553	+
554	+	/**
555	+	* callable(null, result) throws NPE
556	+	*/
557	+	public void testCallableNPE2() {
558	+	try {
559	+	Callable c = Executors.callable((Runnable) null, one);
560	+	shouldThrow();
561	+	} catch (NullPointerException success) {}
562	+	}
563	+
564	+	/**
565	+	* callable(null PrivilegedAction) throws NPE
566	+	*/
567	+	public void testCallableNPE3() {
568	+	try {
569	+	Callable c = Executors.callable((PrivilegedAction) null);
570	+	shouldThrow();
571	+	} catch (NullPointerException success) {}
572	+	}
573	+
574	+	/**
575	+	* callable(null PrivilegedExceptionAction) throws NPE
576	+	*/
577	+	public void testCallableNPE4() {
578	+	try {
579	+	Callable c = Executors.callable((PrivilegedExceptionAction) null);
580	+	shouldThrow();
581	+	} catch (NullPointerException success) {}
582	+	}
583	+
584	+
585		}

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