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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 1.42 by jsr166, Sun May 29 13:45:35 2011 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/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
8	–
9		import junit.framework.*;
10		import java.util.*;
11		import java.util.concurrent.*;
12	<	import java.math.BigInteger;
12	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.security.*;
14
15	<	public class ExecutorsTest extends JSR166TestCase{
15	>	public class ExecutorsTest extends JSR166TestCase {
16		public static void main(String[] args) {
17	<	junit.textui.TestRunner.run (suite());
17	>	junit.textui.TestRunner.run(suite());
18		}
19		public static Test suite() {
20		return new TestSuite(ExecutorsTest.class);
21		}
22
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	–
23		/**
24		* A newCachedThreadPool can execute runnables
25		*/
#	Line 68 | Line 28 | public class ExecutorsTest extends JSR16
28		e.execute(new NoOpRunnable());
29		e.execute(new NoOpRunnable());
30		e.execute(new NoOpRunnable());
31	<	e.shutdown();
31	>	joinPool(e);
32		}
33
34		/**
#	Line 79 | Line 39 | public class ExecutorsTest extends JSR16
39		e.execute(new NoOpRunnable());
40		e.execute(new NoOpRunnable());
41		e.execute(new NoOpRunnable());
42	<	e.shutdown();
42	>	joinPool(e);
43		}
44
45		/**
#	Line 89 | Line 49 | public class ExecutorsTest extends JSR16
49		try {
50		ExecutorService e = Executors.newCachedThreadPool(null);
51		shouldThrow();
52	<	}
93	<	catch(NullPointerException success) {
94	<	}
52	>	} catch (NullPointerException success) {}
53		}
54
97	–
55		/**
56		* A new SingleThreadExecutor can execute runnables
57		*/
#	Line 103 | Line 60 | public class ExecutorsTest extends JSR16
60		e.execute(new NoOpRunnable());
61		e.execute(new NoOpRunnable());
62		e.execute(new NoOpRunnable());
63	<	e.shutdown();
63	>	joinPool(e);
64		}
65
66		/**
#	Line 114 | Line 71 | public class ExecutorsTest extends JSR16
71		e.execute(new NoOpRunnable());
72		e.execute(new NoOpRunnable());
73		e.execute(new NoOpRunnable());
74	<	e.shutdown();
74	>	joinPool(e);
75		}
76
77		/**
#	Line 124 | Line 81 | public class ExecutorsTest extends JSR16
81		try {
82		ExecutorService e = Executors.newSingleThreadExecutor(null);
83		shouldThrow();
84	<	}
85	<	catch(NullPointerException success) {
84	>	} catch (NullPointerException success) {}
85	>	}
86	>
87	>	/**
88	>	* A new SingleThreadExecutor cannot be casted to concrete implementation
89	>	*/
90	>	public void testCastNewSingleThreadExecutor() {
91	>	ExecutorService e = Executors.newSingleThreadExecutor();
92	>	try {
93	>	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
94	>	shouldThrow();
95	>	} catch (ClassCastException success) {
96	>	} finally {
97	>	joinPool(e);
98		}
99		}
100
#	Line 137 | Line 106 | public class ExecutorsTest extends JSR16
106		e.execute(new NoOpRunnable());
107		e.execute(new NoOpRunnable());
108		e.execute(new NoOpRunnable());
109	<	e.shutdown();
109	>	joinPool(e);
110		}
111
112		/**
#	Line 148 | Line 117 | public class ExecutorsTest extends JSR16
117		e.execute(new NoOpRunnable());
118		e.execute(new NoOpRunnable());
119		e.execute(new NoOpRunnable());
120	<	e.shutdown();
120	>	joinPool(e);
121		}
122
123		/**
#	Line 158 | Line 127 | public class ExecutorsTest extends JSR16
127		try {
128		ExecutorService e = Executors.newFixedThreadPool(2, null);
129		shouldThrow();
130	<	}
162	<	catch(NullPointerException success) {
163	<	}
130	>	} catch (NullPointerException success) {}
131		}
132
133		/**
#	Line 170 | Line 137 | public class ExecutorsTest extends JSR16
137		try {
138		ExecutorService e = Executors.newFixedThreadPool(0);
139		shouldThrow();
140	<	}
141	<	catch(IllegalArgumentException success) {
140	>	} catch (IllegalArgumentException success) {}
141	>	}
142	>
143	>	/**
144	>	* An unconfigurable newFixedThreadPool can execute runnables
145	>	*/
146	>	public void testUnconfigurableExecutorService() {
147	>	ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
148	>	e.execute(new NoOpRunnable());
149	>	e.execute(new NoOpRunnable());
150	>	e.execute(new NoOpRunnable());
151	>	joinPool(e);
152	>	}
153	>
154	>	/**
155	>	* unconfigurableExecutorService(null) throws NPE
156	>	*/
157	>	public void testUnconfigurableExecutorServiceNPE() {
158	>	try {
159	>	ExecutorService e = Executors.unconfigurableExecutorService(null);
160	>	shouldThrow();
161	>	} catch (NullPointerException success) {}
162	>	}
163	>
164	>	/**
165	>	* unconfigurableScheduledExecutorService(null) throws NPE
166	>	*/
167	>	public void testUnconfigurableScheduledExecutorServiceNPE() {
168	>	try {
169	>	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
170	>	shouldThrow();
171	>	} catch (NullPointerException success) {}
172	>	}
173	>
174	>	/**
175	>	* a newSingleThreadScheduledExecutor successfully runs delayed task
176	>	*/
177	>	public void testNewSingleThreadScheduledExecutor() throws Exception {
178	>	ScheduledExecutorService p = Executors.newSingleThreadScheduledExecutor();
179	>	try {
180	>	final CountDownLatch proceed = new CountDownLatch(1);
181	>	final Runnable task = new CheckedRunnable() {
182	>	public void realRun() {
183	>	await(proceed);
184	>	}};
185	>	long startTime = System.nanoTime();
186	>	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
187	>	timeoutMillis(), MILLISECONDS);
188	>	assertFalse(f.isDone());
189	>	proceed.countDown();
190	>	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
191	>	assertSame(Boolean.TRUE, f.get());
192	>	assertTrue(f.isDone());
193	>	assertFalse(f.isCancelled());
194	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
195	>	} finally {
196	>	joinPool(p);
197		}
198		}
199
200	+	/**
201	+	* a newScheduledThreadPool successfully runs delayed task
202	+	*/
203	+	public void testNewScheduledThreadPool() throws Exception {
204	+	ScheduledExecutorService p = Executors.newScheduledThreadPool(2);
205	+	try {
206	+	final CountDownLatch proceed = new CountDownLatch(1);
207	+	final Runnable task = new CheckedRunnable() {
208	+	public void realRun() {
209	+	await(proceed);
210	+	}};
211	+	long startTime = System.nanoTime();
212	+	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
213	+	timeoutMillis(), MILLISECONDS);
214	+	assertFalse(f.isDone());
215	+	proceed.countDown();
216	+	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
217	+	assertSame(Boolean.TRUE, f.get());
218	+	assertTrue(f.isDone());
219	+	assertFalse(f.isCancelled());
220	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
221	+	} finally {
222	+	joinPool(p);
223	+	}
224	+	}
225
226		/**
227	<	*  timeouts from execute will time out if they compute too long.
227	>	* an unconfigurable newScheduledThreadPool successfully runs delayed task
228		*/
229	<	public void testTimedCallable() {
230	<	int N = 10000;
231	<	ExecutorService executor = Executors.newSingleThreadExecutor();
232	<	List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
233	<	try {
234	<	long startTime = System.currentTimeMillis();
235	<
236	<	long i = 0;
237	<	while (tasks.size() < N) {
238	<	tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
239	<	i += 10;
240	<	}
241	<
242	<	int iters = 0;
243	<	BigInteger sum = BigInteger.ZERO;
244	<	for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
245	<	try {
246	<	++iters;
247	<	sum = sum.add(it.next().call());
248	<	}
249	<	catch (TimeoutException success) {
250	<	assertTrue(iters > 0);
204	<	return;
205	<	}
206	<	catch (Exception e) {
207	<	unexpectedException();
208	<	}
209	<	}
210	<	// if by chance we didn't ever time out, total time must be small
211	<	long elapsed = System.currentTimeMillis() - startTime;
212	<	assertTrue(elapsed < N);
229	>	public void testUnconfigurableScheduledExecutorService() throws Exception {
230	>	ScheduledExecutorService p =
231	>	Executors.unconfigurableScheduledExecutorService
232	>	(Executors.newScheduledThreadPool(2));
233	>	try {
234	>	final CountDownLatch proceed = new CountDownLatch(1);
235	>	final Runnable task = new CheckedRunnable() {
236	>	public void realRun() {
237	>	await(proceed);
238	>	}};
239	>	long startTime = System.nanoTime();
240	>	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
241	>	timeoutMillis(), MILLISECONDS);
242	>	assertFalse(f.isDone());
243	>	proceed.countDown();
244	>	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
245	>	assertSame(Boolean.TRUE, f.get());
246	>	assertTrue(f.isDone());
247	>	assertFalse(f.isCancelled());
248	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
249	>	} finally {
250	>	joinPool(p);
251		}
252	<	finally {
252	>	}
253	>
254	>	/**
255	>	* Future.get on submitted tasks will time out if they compute too long.
256	>	*/
257	>	public void testTimedCallable() throws Exception {
258	>	final ExecutorService[] executors = {
259	>	Executors.newSingleThreadExecutor(),
260	>	Executors.newCachedThreadPool(),
261	>	Executors.newFixedThreadPool(2),
262	>	Executors.newScheduledThreadPool(2),
263	>	};
264	>
265	>	final Runnable sleeper = new CheckedInterruptedRunnable() {
266	>	public void realRun() throws InterruptedException {
267	>	delay(LONG_DELAY_MS);
268	>	}};
269	>
270	>	List<Thread> threads = new ArrayList<Thread>();
271	>	for (final ExecutorService executor : executors) {
272	>	threads.add(newStartedThread(new CheckedRunnable() {
273	>	public void realRun() {
274	>	long startTime = System.nanoTime();
275	>	Future future = executor.submit(sleeper);
276	>	assertFutureTimesOut(future);
277	>	}}));
278	>	}
279	>	for (Thread thread : threads)
280	>	awaitTermination(thread);
281	>	for (ExecutorService executor : executors)
282		joinPool(executor);
216	–	}
283		}
284
219	–
285		/**
286		* ThreadPoolExecutor using defaultThreadFactory has
287		* specified group, priority, daemon status, and name
288		*/
289	<	public void testDefaultThreadFactory() {
289	>	public void testDefaultThreadFactory() throws Exception {
290		final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
291	<	Runnable r = new Runnable() {
292	<	public void run() {
291	>	final CountDownLatch done = new CountDownLatch(1);
292	>	Runnable r = new CheckedRunnable() {
293	>	public void realRun() {
294	>	try {
295		Thread current = Thread.currentThread();
296	<	threadAssertTrue(!current.isDaemon());
297	<	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
296	>	assertTrue(!current.isDaemon());
297	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
298		ThreadGroup g = current.getThreadGroup();
299		SecurityManager s = System.getSecurityManager();
300		if (s != null)
301	<	threadAssertTrue(g == s.getThreadGroup());
301	>	assertTrue(g == s.getThreadGroup());
302		else
303	<	threadAssertTrue(g == egroup);
303	>	assertTrue(g == egroup);
304		String name = current.getName();
305	<	threadAssertTrue(name.endsWith("thread-1"));
305	>	assertTrue(name.endsWith("thread-1"));
306	>	} catch (SecurityException ok) {
307	>	// Also pass if not allowed to change setting
308		}
309	<	};
309	>	done.countDown();
310	>	}};
311		ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
312	<
312	>
313		e.execute(r);
314	<	e.shutdown();
314	>	await(done);
315	>
316		try {
317	<	Thread.sleep(SHORT_DELAY_MS);
318	<	} catch (Exception eX) {
248	<	unexpectedException();
249	<	} finally {
250	<	joinPool(e);
317	>	e.shutdown();
318	>	} catch (SecurityException ok) {
319		}
320	+
321	+	joinPool(e);
322		}
323
324		/**
#	Line 256 | Line 326 | public class ExecutorsTest extends JSR16
326		* specified group, priority, daemon status, name,
327		* access control context and context class loader
328		*/
329	<	public void testPrivilegedThreadFactory() {
330	<	Policy savedPolicy = Policy.getPolicy();
331	<	AdjustablePolicy policy = new AdjustablePolicy();
332	<	policy.addPermission(new RuntimePermission("getContextClassLoader"));
333	<	policy.addPermission(new RuntimePermission("setContextClassLoader"));
334	<	Policy.setPolicy(policy);
335	<	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
336	<	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
337	<	final AccessControlContext thisacc = AccessController.getContext();
338	<	Runnable r = new Runnable() {
339	<	public void run() {
340	<	Thread current = Thread.currentThread();
341	<	threadAssertTrue(!current.isDaemon());
342	<	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
343	<	ThreadGroup g = current.getThreadGroup();
344	<	SecurityManager s = System.getSecurityManager();
345	<	if (s != null)
346	<	threadAssertTrue(g == s.getThreadGroup());
347	<	else
348	<	threadAssertTrue(g == egroup);
349	<	String name = current.getName();
350	<	threadAssertTrue(name.endsWith("thread-1"));
351	<	threadAssertTrue(thisccl == current.getContextClassLoader());
352	<	threadAssertTrue(thisacc.equals(AccessController.getContext()));
353	<	}
354	<	};
355	<	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
356	<
357	<	Policy.setPolicy(savedPolicy);
358	<	e.execute(r);
359	<	e.shutdown();
360	<	try {
361	<	Thread.sleep(SHORT_DELAY_MS);
362	<	} catch (Exception ex) {
363	<	unexpectedException();
364	<	} finally {
365	<	joinPool(e);
329	>	public void testPrivilegedThreadFactory() throws Exception {
330	>	final CountDownLatch done = new CountDownLatch(1);
331	>	Runnable r = new CheckedRunnable() {
332	>	public void realRun() throws Exception {
333	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
334	>	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
335	>	final AccessControlContext thisacc = AccessController.getContext();
336	>	Runnable r = new CheckedRunnable() {
337	>	public void realRun() {
338	>	Thread current = Thread.currentThread();
339	>	assertTrue(!current.isDaemon());
340	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
341	>	ThreadGroup g = current.getThreadGroup();
342	>	SecurityManager s = System.getSecurityManager();
343	>	if (s != null)
344	>	assertTrue(g == s.getThreadGroup());
345	>	else
346	>	assertTrue(g == egroup);
347	>	String name = current.getName();
348	>	assertTrue(name.endsWith("thread-1"));
349	>	assertSame(thisccl, current.getContextClassLoader());
350	>	assertEquals(thisacc, AccessController.getContext());
351	>	done.countDown();
352	>	}};
353	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
354	>	e.execute(r);
355	>	await(done);
356	>	e.shutdown();
357	>	joinPool(e);
358	>	}};
359	>
360	>	runWithPermissions(r,
361	>	new RuntimePermission("getClassLoader"),
362	>	new RuntimePermission("setContextClassLoader"),
363	>	new RuntimePermission("modifyThread"));
364	>	}
365	>
366	>	boolean haveCCLPermissions() {
367	>	SecurityManager sm = System.getSecurityManager();
368	>	if (sm != null) {
369	>	try {
370	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
371	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
372	>	} catch (AccessControlException e) {
373	>	return false;
374	>	}
375		}
376	+	return true;
377	+	}
378	+
379	+	void checkCCL() {
380	+	SecurityManager sm = System.getSecurityManager();
381	+	if (sm != null) {
382	+	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
383	+	sm.checkPermission(new RuntimePermission("getClassLoader"));
384	+	}
385	+	}
386	+
387	+	class CheckCCL implements Callable<Object> {
388	+	public Object call() {
389	+	checkCCL();
390	+	return null;
391	+	}
392	+	}
393	+
394	+	/**
395	+	* Without class loader permissions, creating
396	+	* privilegedCallableUsingCurrentClassLoader throws ACE
397	+	*/
398	+	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
399	+	Runnable r = new CheckedRunnable() {
400	+	public void realRun() throws Exception {
401	+	if (System.getSecurityManager() == null)
402	+	return;
403	+	try {
404	+	Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
405	+	shouldThrow();
406	+	} catch (AccessControlException success) {}
407	+	}};
408	+
409	+	runWithoutPermissions(r);
410	+	}
411	+
412	+	/**
413	+	* With class loader permissions, calling
414	+	* privilegedCallableUsingCurrentClassLoader does not throw ACE
415	+	*/
416	+	public void testPrivilegedCallableUsingCCLWithPrivs() throws Exception {
417	+	Runnable r = new CheckedRunnable() {
418	+	public void realRun() throws Exception {
419	+	Executors.privilegedCallableUsingCurrentClassLoader
420	+	(new NoOpCallable())
421	+	.call();
422	+	}};
423	+
424	+	runWithPermissions(r,
425	+	new RuntimePermission("getClassLoader"),
426	+	new RuntimePermission("setContextClassLoader"));
427	+	}
428	+
429	+	/**
430	+	* Without permissions, calling privilegedCallable throws ACE
431	+	*/
432	+	public void testPrivilegedCallableWithNoPrivs() throws Exception {
433	+	// Avoid classloader-related SecurityExceptions in swingui.TestRunner
434	+	Executors.privilegedCallable(new CheckCCL());
435	+
436	+	Runnable r = new CheckedRunnable() {
437	+	public void realRun() throws Exception {
438	+	if (System.getSecurityManager() == null)
439	+	return;
440	+	Callable task = Executors.privilegedCallable(new CheckCCL());
441	+	try {
442	+	task.call();
443	+	shouldThrow();
444	+	} catch (AccessControlException success) {}
445	+	}};
446	+
447	+	runWithoutPermissions(r);
448	+
449	+	// It seems rather difficult to test that the
450	+	// AccessControlContext of the privilegedCallable is used
451	+	// instead of its caller.  Below is a failed attempt to do
452	+	// that, which does not work because the AccessController
453	+	// cannot capture the internal state of the current Policy.
454	+	// It would be much more work to differentiate based on,
455	+	// e.g. CodeSource.
456	+
457	+	//         final AccessControlContext[] noprivAcc = new AccessControlContext[1];
458	+	//         final Callable[] task = new Callable[1];
459	+
460	+	//         runWithPermissions
461	+	//             (new CheckedRunnable() {
462	+	//                 public void realRun() {
463	+	//                     if (System.getSecurityManager() == null)
464	+	//                         return;
465	+	//                     noprivAcc[0] = AccessController.getContext();
466	+	//                     task[0] = Executors.privilegedCallable(new CheckCCL());
467	+	//                     try {
468	+	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
469	+	//                                                           public Void run() {
470	+	//                                                               checkCCL();
471	+	//                                                               return null;
472	+	//                                                           }}, noprivAcc[0]);
473	+	//                         shouldThrow();
474	+	//                     } catch (AccessControlException success) {}
475	+	//                 }});
476	+
477	+	//         runWithPermissions
478	+	//             (new CheckedRunnable() {
479	+	//                 public void realRun() throws Exception {
480	+	//                     if (System.getSecurityManager() == null)
481	+	//                         return;
482	+	//                     // Verify that we have an underprivileged ACC
483	+	//                     try {
484	+	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
485	+	//                                                           public Void run() {
486	+	//                                                               checkCCL();
487	+	//                                                               return null;
488	+	//                                                           }}, noprivAcc[0]);
489	+	//                         shouldThrow();
490	+	//                     } catch (AccessControlException success) {}
491	+
492	+	//                     try {
493	+	//                         task[0].call();
494	+	//                         shouldThrow();
495	+	//                     } catch (AccessControlException success) {}
496	+	//                 }},
497	+	//              new RuntimePermission("getClassLoader"),
498	+	//              new RuntimePermission("setContextClassLoader"));
499	+	}
500	+
501	+	/**
502	+	* With permissions, calling privilegedCallable succeeds
503	+	*/
504	+	public void testPrivilegedCallableWithPrivs() throws Exception {
505	+	Runnable r = new CheckedRunnable() {
506	+	public void realRun() throws Exception {
507	+	Executors.privilegedCallable(new CheckCCL()).call();
508	+	}};
509	+
510	+	runWithPermissions(r,
511	+	new RuntimePermission("getClassLoader"),
512	+	new RuntimePermission("setContextClassLoader"));
513	+	}
514	+
515	+	/**
516	+	* callable(Runnable) returns null when called
517	+	*/
518	+	public void testCallable1() throws Exception {
519	+	Callable c = Executors.callable(new NoOpRunnable());
520	+	assertNull(c.call());
521	+	}
522	+
523	+	/**
524	+	* callable(Runnable, result) returns result when called
525	+	*/
526	+	public void testCallable2() throws Exception {
527	+	Callable c = Executors.callable(new NoOpRunnable(), one);
528	+	assertSame(one, c.call());
529	+	}
530	+
531	+	/**
532	+	* callable(PrivilegedAction) returns its result when called
533	+	*/
534	+	public void testCallable3() throws Exception {
535	+	Callable c = Executors.callable(new PrivilegedAction() {
536	+	public Object run() { return one; }});
537	+	assertSame(one, c.call());
538	+	}
539	+
540	+	/**
541	+	* callable(PrivilegedExceptionAction) returns its result when called
542	+	*/
543	+	public void testCallable4() throws Exception {
544	+	Callable c = Executors.callable(new PrivilegedExceptionAction() {
545	+	public Object run() { return one; }});
546	+	assertSame(one, c.call());
547	+	}
548	+
549	+	/**
550	+	* callable(null Runnable) throws NPE
551	+	*/
552	+	public void testCallableNPE1() {
553	+	try {
554	+	Callable c = Executors.callable((Runnable) null);
555	+	shouldThrow();
556	+	} catch (NullPointerException success) {}
557	+	}
558	+
559	+	/**
560	+	* callable(null, result) throws NPE
561	+	*/
562	+	public void testCallableNPE2() {
563	+	try {
564	+	Callable c = Executors.callable((Runnable) null, one);
565	+	shouldThrow();
566	+	} catch (NullPointerException success) {}
567	+	}
568
569	+	/**
570	+	* callable(null PrivilegedAction) throws NPE
571	+	*/
572	+	public void testCallableNPE3() {
573	+	try {
574	+	Callable c = Executors.callable((PrivilegedAction) null);
575	+	shouldThrow();
576	+	} catch (NullPointerException success) {}
577	+	}
578	+
579	+	/**
580	+	* callable(null PrivilegedExceptionAction) throws NPE
581	+	*/
582	+	public void testCallableNPE4() {
583	+	try {
584	+	Callable c = Executors.callable((PrivilegedExceptionAction) null);
585	+	shouldThrow();
586	+	} catch (NullPointerException success) {}
587		}
588
589		}

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