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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 1.41 by jsr166, Sun May 29 06:54:23 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 done = new CountDownLatch(1);
181	>	final Runnable task = new CheckedRunnable() {
182	>	public void realRun() {
183	>	done.countDown();
184	>	}};
185	>	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
186	>	SHORT_DELAY_MS, MILLISECONDS);
187	>	assertFalse(f.isDone());
188	>	assertTrue(done.await(MEDIUM_DELAY_MS, MILLISECONDS));
189	>	assertSame(Boolean.TRUE, f.get(SMALL_DELAY_MS, MILLISECONDS));
190	>	assertSame(Boolean.TRUE, f.get());
191	>	assertTrue(f.isDone());
192	>	} finally {
193	>	joinPool(p);
194		}
195		}
196
197	+	/**
198	+	* a newScheduledThreadPool successfully runs delayed task
199	+	*/
200	+	public void testnewScheduledThreadPool() throws Exception {
201	+	ScheduledExecutorService p = Executors.newScheduledThreadPool(2);
202	+	try {
203	+	final CountDownLatch done = new CountDownLatch(1);
204	+	final Runnable task = new CheckedRunnable() {
205	+	public void realRun() {
206	+	done.countDown();
207	+	}};
208	+	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
209	+	SHORT_DELAY_MS, MILLISECONDS);
210	+	assertFalse(f.isDone());
211	+	assertTrue(done.await(MEDIUM_DELAY_MS, MILLISECONDS));
212	+	assertSame(Boolean.TRUE, f.get(SMALL_DELAY_MS, MILLISECONDS));
213	+	assertSame(Boolean.TRUE, f.get());
214	+	assertTrue(f.isDone());
215	+	} finally {
216	+	joinPool(p);
217	+	}
218	+	}
219
220		/**
221	<	*  timeouts from execute will time out if they compute too long.
221	>	* an unconfigurable newScheduledThreadPool successfully runs delayed task
222		*/
223	<	public void testTimedCallable() {
224	<	int N = 10000;
225	<	ExecutorService executor = Executors.newSingleThreadExecutor();
226	<	List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
227	<	try {
228	<	long startTime = System.currentTimeMillis();
229	<
230	<	long i = 0;
231	<	while (tasks.size() < N) {
232	<	tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
233	<	i += 10;
234	<	}
235	<
236	<	int iters = 0;
237	<	BigInteger sum = BigInteger.ZERO;
238	<	for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
239	<	try {
240	<	++iters;
241	<	sum = sum.add(it.next().call());
201	<	}
202	<	catch (TimeoutException success) {
203	<	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);
223	>	public void testunconfigurableScheduledExecutorService() throws Exception {
224	>	ScheduledExecutorService p =
225	>	Executors.unconfigurableScheduledExecutorService
226	>	(Executors.newScheduledThreadPool(2));
227	>	try {
228	>	final CountDownLatch done = new CountDownLatch(1);
229	>	final Runnable task = new CheckedRunnable() {
230	>	public void realRun() {
231	>	done.countDown();
232	>	}};
233	>	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
234	>	SHORT_DELAY_MS, MILLISECONDS);
235	>	assertFalse(f.isDone());
236	>	assertTrue(done.await(MEDIUM_DELAY_MS, MILLISECONDS));
237	>	assertSame(Boolean.TRUE, f.get(SMALL_DELAY_MS, MILLISECONDS));
238	>	assertSame(Boolean.TRUE, f.get());
239	>	assertTrue(f.isDone());
240	>	} finally {
241	>	joinPool(p);
242		}
243	<	finally {
243	>	}
244	>
245	>	/**
246	>	* Future.get on submitted tasks will time out if they compute too long.
247	>	*/
248	>	public void testTimedCallable() throws Exception {
249	>	final ExecutorService[] executors = {
250	>	Executors.newSingleThreadExecutor(),
251	>	Executors.newCachedThreadPool(),
252	>	Executors.newFixedThreadPool(2),
253	>	Executors.newScheduledThreadPool(2),
254	>	};
255	>
256	>	final Runnable sleeper = new CheckedInterruptedRunnable() {
257	>	public void realRun() throws InterruptedException {
258	>	delay(LONG_DELAY_MS);
259	>	}};
260	>
261	>	List<Thread> threads = new ArrayList<Thread>();
262	>	for (final ExecutorService executor : executors) {
263	>	threads.add(newStartedThread(new CheckedRunnable() {
264	>	public void realRun() {
265	>	long startTime = System.nanoTime();
266	>	Future future = executor.submit(sleeper);
267	>	assertFutureTimesOut(future);
268	>	}}));
269	>	}
270	>	for (Thread thread : threads)
271	>	awaitTermination(thread);
272	>	for (ExecutorService executor : executors)
273		joinPool(executor);
216	–	}
274		}
275
219	–
276		/**
277		* ThreadPoolExecutor using defaultThreadFactory has
278		* specified group, priority, daemon status, and name
279		*/
280	<	public void testDefaultThreadFactory() {
280	>	public void testDefaultThreadFactory() throws Exception {
281		final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
282	<	Runnable r = new Runnable() {
283	<	public void run() {
282	>	Runnable r = new CheckedRunnable() {
283	>	public void realRun() {
284	>	try {
285		Thread current = Thread.currentThread();
286	<	threadAssertTrue(!current.isDaemon());
287	<	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
286	>	assertTrue(!current.isDaemon());
287	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
288		ThreadGroup g = current.getThreadGroup();
289		SecurityManager s = System.getSecurityManager();
290		if (s != null)
291	<	threadAssertTrue(g == s.getThreadGroup());
291	>	assertTrue(g == s.getThreadGroup());
292		else
293	<	threadAssertTrue(g == egroup);
293	>	assertTrue(g == egroup);
294		String name = current.getName();
295	<	threadAssertTrue(name.endsWith("thread-1"));
295	>	assertTrue(name.endsWith("thread-1"));
296	>	} catch (SecurityException ok) {
297	>	// Also pass if not allowed to change setting
298		}
299	<	};
299	>	}};
300		ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
301	<
301	>
302		e.execute(r);
244	–	e.shutdown();
303		try {
304	<	Thread.sleep(SHORT_DELAY_MS);
305	<	} catch (Exception eX) {
306	<	unexpectedException();
304	>	e.shutdown();
305	>	} catch (SecurityException ok) {
306	>	}
307	>
308	>	try {
309	>	delay(SHORT_DELAY_MS);
310		} finally {
311		joinPool(e);
312		}
#	Line 256 | Line 317 | public class ExecutorsTest extends JSR16
317		* specified group, priority, daemon status, name,
318		* access control context and context class loader
319		*/
320	<	public void testPrivilegedThreadFactory() {
321	<	Policy savedPolicy = Policy.getPolicy();
322	<	AdjustablePolicy policy = new AdjustablePolicy();
323	<	policy.addPermission(new RuntimePermission("getContextClassLoader"));
324	<	policy.addPermission(new RuntimePermission("setContextClassLoader"));
325	<	Policy.setPolicy(policy);
326	<	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
327	<	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
328	<	final AccessControlContext thisacc = AccessController.getContext();
329	<	Runnable r = new Runnable() {
330	<	public void run() {
331	<	Thread current = Thread.currentThread();
332	<	threadAssertTrue(!current.isDaemon());
333	<	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
334	<	ThreadGroup g = current.getThreadGroup();
335	<	SecurityManager s = System.getSecurityManager();
336	<	if (s != null)
337	<	threadAssertTrue(g == s.getThreadGroup());
338	<	else
339	<	threadAssertTrue(g == egroup);
340	<	String name = current.getName();
341	<	threadAssertTrue(name.endsWith("thread-1"));
342	<	threadAssertTrue(thisccl == current.getContextClassLoader());
343	<	threadAssertTrue(thisacc.equals(AccessController.getContext()));
344	<	}
345	<	};
346	<	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
347	<
348	<	Policy.setPolicy(savedPolicy);
349	<	e.execute(r);
350	<	e.shutdown();
351	<	try {
352	<	Thread.sleep(SHORT_DELAY_MS);
353	<	} catch (Exception ex) {
354	<	unexpectedException();
355	<	} finally {
356	<	joinPool(e);
320	>	public void testPrivilegedThreadFactory() throws Exception {
321	>	Runnable r = new CheckedRunnable() {
322	>	public void realRun() throws Exception {
323	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
324	>	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
325	>	final AccessControlContext thisacc = AccessController.getContext();
326	>	Runnable r = new CheckedRunnable() {
327	>	public void realRun() {
328	>	Thread current = Thread.currentThread();
329	>	assertTrue(!current.isDaemon());
330	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
331	>	ThreadGroup g = current.getThreadGroup();
332	>	SecurityManager s = System.getSecurityManager();
333	>	if (s != null)
334	>	assertTrue(g == s.getThreadGroup());
335	>	else
336	>	assertTrue(g == egroup);
337	>	String name = current.getName();
338	>	assertTrue(name.endsWith("thread-1"));
339	>	assertSame(thisccl, current.getContextClassLoader());
340	>	assertEquals(thisacc, AccessController.getContext());
341	>	}};
342	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
343	>	e.execute(r);
344	>	e.shutdown();
345	>	delay(SHORT_DELAY_MS);
346	>	joinPool(e);
347	>	}};
348	>
349	>	runWithPermissions(r,
350	>	new RuntimePermission("getClassLoader"),
351	>	new RuntimePermission("setContextClassLoader"),
352	>	new RuntimePermission("modifyThread"));
353	>	}
354	>
355	>	boolean haveCCLPermissions() {
356	>	SecurityManager sm = System.getSecurityManager();
357	>	if (sm != null) {
358	>	try {
359	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
360	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
361	>	} catch (AccessControlException e) {
362	>	return false;
363	>	}
364	>	}
365	>	return true;
366	>	}
367	>
368	>	void checkCCL() {
369	>	SecurityManager sm = System.getSecurityManager();
370	>	if (sm != null) {
371	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
372	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
373		}
374	+	}
375	+
376	+	class CheckCCL implements Callable<Object> {
377	+	public Object call() {
378	+	checkCCL();
379	+	return null;
380	+	}
381	+	}
382	+
383	+	/**
384	+	* Without class loader permissions, creating
385	+	* privilegedCallableUsingCurrentClassLoader throws ACE
386	+	*/
387	+	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
388	+	Runnable r = new CheckedRunnable() {
389	+	public void realRun() throws Exception {
390	+	if (System.getSecurityManager() == null)
391	+	return;
392	+	try {
393	+	Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
394	+	shouldThrow();
395	+	} catch (AccessControlException success) {}
396	+	}};
397	+
398	+	runWithoutPermissions(r);
399	+	}
400	+
401	+	/**
402	+	* With class loader permissions, calling
403	+	* privilegedCallableUsingCurrentClassLoader does not throw ACE
404	+	*/
405	+	public void testprivilegedCallableUsingCCLWithPrivs() throws Exception {
406	+	Runnable r = new CheckedRunnable() {
407	+	public void realRun() throws Exception {
408	+	Executors.privilegedCallableUsingCurrentClassLoader
409	+	(new NoOpCallable())
410	+	.call();
411	+	}};
412	+
413	+	runWithPermissions(r,
414	+	new RuntimePermission("getClassLoader"),
415	+	new RuntimePermission("setContextClassLoader"));
416	+	}
417
418	+	/**
419	+	* Without permissions, calling privilegedCallable throws ACE
420	+	*/
421	+	public void testprivilegedCallableWithNoPrivs() throws Exception {
422	+	// Avoid classloader-related SecurityExceptions in swingui.TestRunner
423	+	Executors.privilegedCallable(new CheckCCL());
424	+
425	+	Runnable r = new CheckedRunnable() {
426	+	public void realRun() throws Exception {
427	+	if (System.getSecurityManager() == null)
428	+	return;
429	+	Callable task = Executors.privilegedCallable(new CheckCCL());
430	+	try {
431	+	task.call();
432	+	shouldThrow();
433	+	} catch (AccessControlException success) {}
434	+	}};
435	+
436	+	runWithoutPermissions(r);
437	+
438	+	// It seems rather difficult to test that the
439	+	// AccessControlContext of the privilegedCallable is used
440	+	// instead of its caller.  Below is a failed attempt to do
441	+	// that, which does not work because the AccessController
442	+	// cannot capture the internal state of the current Policy.
443	+	// It would be much more work to differentiate based on,
444	+	// e.g. CodeSource.
445	+
446	+	//         final AccessControlContext[] noprivAcc = new AccessControlContext[1];
447	+	//         final Callable[] task = new Callable[1];
448	+
449	+	//         runWithPermissions
450	+	//             (new CheckedRunnable() {
451	+	//                 public void realRun() {
452	+	//                     if (System.getSecurityManager() == null)
453	+	//                         return;
454	+	//                     noprivAcc[0] = AccessController.getContext();
455	+	//                     task[0] = Executors.privilegedCallable(new CheckCCL());
456	+	//                     try {
457	+	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
458	+	//                                                           public Void run() {
459	+	//                                                               checkCCL();
460	+	//                                                               return null;
461	+	//                                                           }}, noprivAcc[0]);
462	+	//                         shouldThrow();
463	+	//                     } catch (AccessControlException success) {}
464	+	//                 }});
465	+
466	+	//         runWithPermissions
467	+	//             (new CheckedRunnable() {
468	+	//                 public void realRun() throws Exception {
469	+	//                     if (System.getSecurityManager() == null)
470	+	//                         return;
471	+	//                     // Verify that we have an underprivileged ACC
472	+	//                     try {
473	+	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
474	+	//                                                           public Void run() {
475	+	//                                                               checkCCL();
476	+	//                                                               return null;
477	+	//                                                           }}, noprivAcc[0]);
478	+	//                         shouldThrow();
479	+	//                     } catch (AccessControlException success) {}
480	+
481	+	//                     try {
482	+	//                         task[0].call();
483	+	//                         shouldThrow();
484	+	//                     } catch (AccessControlException success) {}
485	+	//                 }},
486	+	//              new RuntimePermission("getClassLoader"),
487	+	//              new RuntimePermission("setContextClassLoader"));
488	+	}
489	+
490	+	/**
491	+	* With permissions, calling privilegedCallable succeeds
492	+	*/
493	+	public void testprivilegedCallableWithPrivs() throws Exception {
494	+	Runnable r = new CheckedRunnable() {
495	+	public void realRun() throws Exception {
496	+	Executors.privilegedCallable(new CheckCCL()).call();
497	+	}};
498	+
499	+	runWithPermissions(r,
500	+	new RuntimePermission("getClassLoader"),
501	+	new RuntimePermission("setContextClassLoader"));
502	+	}
503	+
504	+	/**
505	+	* callable(Runnable) returns null when called
506	+	*/
507	+	public void testCallable1() throws Exception {
508	+	Callable c = Executors.callable(new NoOpRunnable());
509	+	assertNull(c.call());
510	+	}
511	+
512	+	/**
513	+	* callable(Runnable, result) returns result when called
514	+	*/
515	+	public void testCallable2() throws Exception {
516	+	Callable c = Executors.callable(new NoOpRunnable(), one);
517	+	assertSame(one, c.call());
518	+	}
519	+
520	+	/**
521	+	* callable(PrivilegedAction) returns its result when called
522	+	*/
523	+	public void testCallable3() throws Exception {
524	+	Callable c = Executors.callable(new PrivilegedAction() {
525	+	public Object run() { return one; }});
526	+	assertSame(one, c.call());
527	+	}
528	+
529	+	/**
530	+	* callable(PrivilegedExceptionAction) returns its result when called
531	+	*/
532	+	public void testCallable4() throws Exception {
533	+	Callable c = Executors.callable(new PrivilegedExceptionAction() {
534	+	public Object run() { return one; }});
535	+	assertSame(one, c.call());
536	+	}
537	+
538	+	/**
539	+	* callable(null Runnable) throws NPE
540	+	*/
541	+	public void testCallableNPE1() {
542	+	try {
543	+	Callable c = Executors.callable((Runnable) null);
544	+	shouldThrow();
545	+	} catch (NullPointerException success) {}
546	+	}
547	+
548	+	/**
549	+	* callable(null, result) throws NPE
550	+	*/
551	+	public void testCallableNPE2() {
552	+	try {
553	+	Callable c = Executors.callable((Runnable) null, one);
554	+	shouldThrow();
555	+	} catch (NullPointerException success) {}
556	+	}
557	+
558	+	/**
559	+	* callable(null PrivilegedAction) throws NPE
560	+	*/
561	+	public void testCallableNPE3() {
562	+	try {
563	+	Callable c = Executors.callable((PrivilegedAction) null);
564	+	shouldThrow();
565	+	} catch (NullPointerException success) {}
566	+	}
567	+
568	+	/**
569	+	* callable(null PrivilegedExceptionAction) throws NPE
570	+	*/
571	+	public void testCallableNPE4() {
572	+	try {
573	+	Callable c = Executors.callable((PrivilegedExceptionAction) null);
574	+	shouldThrow();
575	+	} catch (NullPointerException success) {}
576		}
577
578		}

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