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

Comparing jsr166/src/test/tck/ExecutorsTest.java (file contents):
Revision 1.3 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.26 by jsr166, Sat Nov 21 02:33:20 2009 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{
15	<
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		}
19	–
20	–
21		public static Test suite() {
22	<	return new TestSuite(ExecutorsTest.class);
22	>	return new TestSuite(ExecutorsTest.class);
23		}
24
25	<	/**
26	<	*   execute(Executor, Runnable) will throw
27	<	*  RejectedExecutionException Attempting to execute a runnable on
28	<	*  a full ThreadPool will cause such an exception here, up to 5
29	<	*  runnables are attempted on a pool capable on handling one
30	<	*  until it throws an exception
31	<	*/
32	<	public void testExecute1(){
33	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
34	<	try{
35	<
36	<	for(int i = 0; i < 5; ++i){
37	<	Executors.execute(p, new MediumRunnable(), Boolean.TRUE);
38	<	}
39	<	fail("should throw");
40	<	} catch(RejectedExecutionException success){}
41	<	joinPool(p);
42	<	}
25	>	static class TimedCallable<T> implements Callable<T> {
26	>	private final ExecutorService exec;
27	>	private final Callable<T> func;
28	>	private final long msecs;
29
30	<	/**
31	<	*   execute(Executor, Callable) will throw
32	<	*  RejectedExecutionException Attempting to execute a callable on
33	<	*  a full ThreadPool will cause such an exception here, up to 5
34	<	*  runnables are attempted on a pool capable on handling one
35	<	*  until it throws an exception
36	<	*/
37	<	public void testExecute2(){
38	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
39	<	try{
40	<	for(int i = 0; i < 5; ++i) {
41	<	Executors.execute(p, new SmallCallable());
30	>	TimedCallable(ExecutorService exec, Callable<T> func, long msecs) {
31	>	this.exec = exec;
32	>	this.func = func;
33	>	this.msecs = msecs;
34	>	}
35	>
36	>	public T call() throws Exception {
37	>	Future<T> ftask = exec.submit(func);
38	>	try {
39	>	return ftask.get(msecs, MILLISECONDS);
40	>	} finally {
41	>	ftask.cancel(true);
42		}
43	<	fail("should throw");
58	<	}catch(RejectedExecutionException e){}
59	<	joinPool(p);
43	>	}
44		}
45
46
47	<	/**
48	<	*   invoke(Executor, Runnable) throws InterruptedException
49	<	*  A single use of invoke starts that will wait long enough
50	<	*  for the invoking thread to be interrupted
51	<	*/
68	<	public void testInvoke2(){
69	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
70	<	Thread t = new Thread(new Runnable() {
71	<	public void run(){
72	<	try{
73	<	Executors.invoke(p,new Runnable(){
74	<	public void run(){
75	<	try{
76	<	Thread.sleep(MEDIUM_DELAY_MS);
77	<	fail("should throw");
78	<	}catch(InterruptedException e){
79	<	}
80	<	}
81	<	});
82	<	} catch(InterruptedException success){
83	<	} catch(Exception e) {
84	<	fail("unexpected exception");
85	<	}
86	<
87	<	}
88	<	});
89	<	try{
90	<	t.start();
91	<	Thread.sleep(SHORT_DELAY_MS);
92	<	t.interrupt();
93	<	}catch(Exception e){
94	<	fail("unexpected exception");
47	>	private static class Fib implements Callable<BigInteger> {
48	>	private final BigInteger n;
49	>	Fib(long n) {
50	>	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
51	>	this.n = BigInteger.valueOf(n);
52		}
53	<	joinPool(p);
54	<	}
53	>	public BigInteger call() {
54	>	BigInteger f1 = BigInteger.ONE;
55	>	BigInteger f2 = f1;
56	>	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
57	>	BigInteger t = f1.add(f2);
58	>	f1 = f2;
59	>	f2 = t;
60	>	}
61	>	return f1;
62	>	}
63	>	};
64
65		/**
66	<	*   invoke(Executor, Runnable) will throw
101	<	*  ExecutionException An ExecutionException occurs when the
102	<	*  underlying Runnable throws an exception, here the
103	<	*  DivideByZeroException will cause an ExecutionException
66	>	* A newCachedThreadPool can execute runnables
67		*/
68	<	public void testInvoke3(){
69	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
70	<	try{
71	<	Runnable r = new Runnable(){
72	<	public void run(){
73	<	int i = 5/0;
111	<	}
112	<	};
113	<
114	<	for(int i =0; i < 5; i++){
115	<	Executors.invoke(p,r);
116	<	}
117	<
118	<	fail("should throw");
119	<	} catch(ExecutionException success){
120	<	} catch(Exception e){
121	<	fail("should throw EE");
122	<	}
123	<	joinPool(p);
68	>	public void testNewCachedThreadPool1() {
69	>	ExecutorService e = Executors.newCachedThreadPool();
70	>	e.execute(new NoOpRunnable());
71	>	e.execute(new NoOpRunnable());
72	>	e.execute(new NoOpRunnable());
73	>	joinPool(e);
74		}
75
76	<
76	>	/**
77	>	* A newCachedThreadPool with given ThreadFactory can execute runnables
78	>	*/
79	>	public void testNewCachedThreadPool2() {
80	>	ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
81	>	e.execute(new NoOpRunnable());
82	>	e.execute(new NoOpRunnable());
83	>	e.execute(new NoOpRunnable());
84	>	joinPool(e);
85	>	}
86
87		/**
88	<	*   invoke(Executor, Callable) throws
89	<	*  InterruptedException A single use of invoke starts that will
90	<	*  wait long enough for the invoking thread to be interrupted
91	<	*/
92	<	public void testInvoke5(){
93	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
94	<
95	<	final Callable c = new Callable(){
137	<	public Object call(){
138	<	try{
139	<	Executors.invoke(p, new SmallCallable());
140	<	fail("should throw");
141	<	}catch(InterruptedException e){}
142	<	catch(RejectedExecutionException e2){}
143	<	catch(ExecutionException e3){}
144	<	return Boolean.TRUE;
145	<	}
146	<	};
88	>	* A newCachedThreadPool with null ThreadFactory throws NPE
89	>	*/
90	>	public void testNewCachedThreadPool3() {
91	>	try {
92	>	ExecutorService e = Executors.newCachedThreadPool(null);
93	>	shouldThrow();
94	>	} catch (NullPointerException success) {}
95	>	}
96
97
98	<
99	<	Thread t = new Thread(new Runnable(){
100	<	public void run(){
101	<	try{
102	<	c.call();
103	<	}catch(Exception e){}
104	<	}
105	<	});
106	<	try{
158	<	t.start();
159	<	Thread.sleep(SHORT_DELAY_MS);
160	<	t.interrupt();
161	<	t.join();
162	<	}catch(InterruptedException e){
163	<	fail("unexpected exception");
164	<	}
165	<
166	<	joinPool(p);
98	>	/**
99	>	* A new SingleThreadExecutor can execute runnables
100	>	*/
101	>	public void testNewSingleThreadExecutor1() {
102	>	ExecutorService e = Executors.newSingleThreadExecutor();
103	>	e.execute(new NoOpRunnable());
104	>	e.execute(new NoOpRunnable());
105	>	e.execute(new NoOpRunnable());
106	>	joinPool(e);
107		}
108
109		/**
110	<	*   invoke(Executor, Callable) will throw ExecutionException
171	<	*  An ExecutionException occurs when the underlying Runnable throws
172	<	*  an exception, here the DivideByZeroException will cause an ExecutionException
110	>	* A new SingleThreadExecutor with given ThreadFactory can execute runnables
111		*/
112	<	public void testInvoke6(){
113	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
112	>	public void testNewSingleThreadExecutor2() {
113	>	ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
114	>	e.execute(new NoOpRunnable());
115	>	e.execute(new NoOpRunnable());
116	>	e.execute(new NoOpRunnable());
117	>	joinPool(e);
118	>	}
119
120	<	try{
121	<	Callable c = new Callable(){
122	<	public Object call(){
123	<	int i = 5/0;
124	<	return Boolean.TRUE;
125	<	}
126	<	};
127	<
185	<	for(int i =0; i < 5; i++){
186	<	Executors.invoke(p,c);
187	<	}
188	<
189	<	fail("should throw");
190	<	}catch(RejectedExecutionException e){}
191	<	catch(InterruptedException e2){}
192	<	catch(ExecutionException e3){}
193	<	joinPool(p);
120	>	/**
121	>	* A new SingleThreadExecutor with null ThreadFactory throws NPE
122	>	*/
123	>	public void testNewSingleThreadExecutor3() {
124	>	try {
125	>	ExecutorService e = Executors.newSingleThreadExecutor(null);
126	>	shouldThrow();
127	>	} catch (NullPointerException success) {}
128		}
129
130	<	public void testExecuteRunnable () {
130	>	/**
131	>	* A new SingleThreadExecutor cannot be casted to concrete implementation
132	>	*/
133	>	public void testCastNewSingleThreadExecutor() {
134	>	ExecutorService e = Executors.newSingleThreadExecutor();
135		try {
136	<	Executor e = new DirectExecutor();
137	<	Task task = new Task();
136	>	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
137	>	shouldThrow();
138	>	} catch (ClassCastException success) {
139	>	} finally {
140	>	joinPool(e);
141	>	}
142	>	}
143
201	–	assertFalse("task should not be complete", task.isCompleted());
144
145	<	Future<String> future = Executors.execute(e, task, TEST_STRING);
146	<	String result = future.get();
145	>	/**
146	>	* A new newFixedThreadPool can execute runnables
147	>	*/
148	>	public void testNewFixedThreadPool1() {
149	>	ExecutorService e = Executors.newFixedThreadPool(2);
150	>	e.execute(new NoOpRunnable());
151	>	e.execute(new NoOpRunnable());
152	>	e.execute(new NoOpRunnable());
153	>	joinPool(e);
154	>	}
155
156	<	assertTrue("task should be complete", task.isCompleted());
157	<	assertSame("should return test string", TEST_STRING, result);
158	<	}
159	<	catch (ExecutionException ex) {
160	<	fail("Unexpected exception");
161	<	}
162	<	catch (InterruptedException ex) {
163	<	fail("Unexpected exception");
164	<	}
156	>	/**
157	>	* A new newFixedThreadPool with given ThreadFactory can execute runnables
158	>	*/
159	>	public void testNewFixedThreadPool2() {
160	>	ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
161	>	e.execute(new NoOpRunnable());
162	>	e.execute(new NoOpRunnable());
163	>	e.execute(new NoOpRunnable());
164	>	joinPool(e);
165		}
166
167	<	public void testInvokeRunnable () {
167	>	/**
168	>	* A new newFixedThreadPool with null ThreadFactory throws NPE
169	>	*/
170	>	public void testNewFixedThreadPool3() {
171		try {
172	<	Executor e = new DirectExecutor();
173	<	Task task = new Task();
172	>	ExecutorService e = Executors.newFixedThreadPool(2, null);
173	>	shouldThrow();
174	>	} catch (NullPointerException success) {}
175	>	}
176
177	<	assertFalse("task should not be complete", task.isCompleted());
177	>	/**
178	>	* A new newFixedThreadPool with 0 threads throws IAE
179	>	*/
180	>	public void testNewFixedThreadPool4() {
181	>	try {
182	>	ExecutorService e = Executors.newFixedThreadPool(0);
183	>	shouldThrow();
184	>	} catch (IllegalArgumentException success) {}
185	>	}
186
224	–	Executors.invoke(e, task);
187
188	<	assertTrue("task should be complete", task.isCompleted());
189	<	}
190	<	catch (ExecutionException ex) {
191	<	fail("Unexpected exception");
192	<	}
193	<	catch (InterruptedException ex) {
194	<	fail("Unexpected exception");
195	<	}
188	>	/**
189	>	* An unconfigurable newFixedThreadPool can execute runnables
190	>	*/
191	>	public void testunconfigurableExecutorService() {
192	>	ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
193	>	e.execute(new NoOpRunnable());
194	>	e.execute(new NoOpRunnable());
195	>	e.execute(new NoOpRunnable());
196	>	joinPool(e);
197		}
198
199	<	public void testExecuteCallable () {
199	>	/**
200	>	* unconfigurableExecutorService(null) throws NPE
201	>	*/
202	>	public void testunconfigurableExecutorServiceNPE() {
203		try {
204	<	Executor e = new DirectExecutor();
205	<	Future<String> future = Executors.execute(e, new StringTask());
206	<	String result = future.get();
241	<
242	<	assertSame("should return test string", TEST_STRING, result);
243	<	}
244	<	catch (ExecutionException ex) {
245	<	fail("Unexpected exception");
246	<	}
247	<	catch (InterruptedException ex) {
248	<	fail("Unexpected exception");
249	<	}
204	>	ExecutorService e = Executors.unconfigurableExecutorService(null);
205	>	shouldThrow();
206	>	} catch (NullPointerException success) {}
207		}
208
209	<	public void testInvokeCallable () {
209	>	/**
210	>	* unconfigurableScheduledExecutorService(null) throws NPE
211	>	*/
212	>	public void testunconfigurableScheduledExecutorServiceNPE() {
213		try {
214	<	Executor e = new DirectExecutor();
215	<	String result = Executors.invoke(e, new StringTask());
216	<
257	<	assertSame("should return test string", TEST_STRING, result);
258	<	}
259	<	catch (ExecutionException ex) {
260	<	fail("Unexpected exception" );
261	<	}
262	<	catch (InterruptedException ex) {
263	<	fail("Unexpected exception");
264	<	}
214	>	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
215	>	shouldThrow();
216	>	} catch (NullPointerException success) {}
217		}
218
267	–	private static final String TEST_STRING = "a test string";
219
220	<	private static class Task implements Runnable {
221	<	public void run() { completed = true; }
222	<	public boolean isCompleted() { return completed; }
223	<	public void reset() { completed = false; }
224	<	private boolean completed = false;
220	>	/**
221	>	* a newSingleThreadScheduledExecutor successfully runs delayed task
222	>	*/
223	>	public void testNewSingleThreadScheduledExecutor() throws Exception {
224	>	TrackedCallable callable = new TrackedCallable();
225	>	ScheduledExecutorService p1 = Executors.newSingleThreadScheduledExecutor();
226	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
227	>	assertFalse(callable.done);
228	>	Thread.sleep(MEDIUM_DELAY_MS);
229	>	assertTrue(callable.done);
230	>	assertEquals(Boolean.TRUE, f.get());
231	>	joinPool(p1);
232		}
233
234	<	private static class StringTask implements Callable<String> {
235	<	public String call() { return TEST_STRING; }
234	>	/**
235	>	* a newScheduledThreadPool successfully runs delayed task
236	>	*/
237	>	public void testnewScheduledThreadPool() throws Exception {
238	>	TrackedCallable callable = new TrackedCallable();
239	>	ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2);
240	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
241	>	assertFalse(callable.done);
242	>	Thread.sleep(MEDIUM_DELAY_MS);
243	>	assertTrue(callable.done);
244	>	assertEquals(Boolean.TRUE, f.get());
245	>	joinPool(p1);
246		}
247
248	<	static class DirectExecutor implements Executor {
249	<	public void execute(Runnable r) {
250	<	r.run();
251	<	}
248	>	/**
249	>	* an unconfigurable newScheduledThreadPool successfully runs delayed task
250	>	*/
251	>	public void testunconfigurableScheduledExecutorService() throws Exception {
252	>	TrackedCallable callable = new TrackedCallable();
253	>	ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2));
254	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
255	>	assertFalse(callable.done);
256	>	Thread.sleep(MEDIUM_DELAY_MS);
257	>	assertTrue(callable.done);
258	>	assertEquals(Boolean.TRUE, f.get());
259	>	joinPool(p1);
260		}
261
262		/**
263	<	* Check that timeouts from execute will time out if they compute
288	<	* too long.
263	>	*  timeouts from execute will time out if they compute too long.
264		*/
265	<
291	<	public void testTimedCallable() {
265	>	public void testTimedCallable() throws Exception {
266		int N = 10000;
267		ExecutorService executor = Executors.newSingleThreadExecutor();
268		List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
269		try {
270		long startTime = System.currentTimeMillis();
271	<
271	>
272		long i = 0;
273		while (tasks.size() < N) {
274		tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
275		i += 10;
276		}
277	<
277	>
278		int iters = 0;
279		BigInteger sum = BigInteger.ZERO;
280		for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
#	Line 312 | Line 286 | public class ExecutorsTest extends JSR16
286		assertTrue(iters > 0);
287		return;
288		}
315	–	catch (Exception e) {
316	–	fail("unexpected exception: " + e);
317	–	}
289		}
290		// if by chance we didn't ever time out, total time must be small
291		long elapsed = System.currentTimeMillis() - startTime;
#	Line 325 | Line 296 | public class ExecutorsTest extends JSR16
296		}
297		}
298
299	<
300	<	static class TimedCallable<T> implements Callable<T> {
301	<	private final Executor exec;
302	<	private final Callable<T> func;
303	<	private final long msecs;
304	<
305	<	TimedCallable(Executor exec, Callable<T> func, long msecs) {
306	<	this.exec = exec;
307	<	this.func = func;
308	<	this.msecs = msecs;
299	>
300	>	/**
301	>	* ThreadPoolExecutor using defaultThreadFactory has
302	>	* specified group, priority, daemon status, and name
303	>	*/
304	>	public void testDefaultThreadFactory() throws Exception {
305	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
306	>	Runnable r = new Runnable() {
307	>	public void run() {
308	>	try {
309	>	Thread current = Thread.currentThread();
310	>	threadAssertTrue(!current.isDaemon());
311	>	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
312	>	ThreadGroup g = current.getThreadGroup();
313	>	SecurityManager s = System.getSecurityManager();
314	>	if (s != null)
315	>	threadAssertTrue(g == s.getThreadGroup());
316	>	else
317	>	threadAssertTrue(g == egroup);
318	>	String name = current.getName();
319	>	threadAssertTrue(name.endsWith("thread-1"));
320	>	} catch (SecurityException ok) {
321	>	// Also pass if not allowed to change setting
322	>	}
323	>	}
324	>	};
325	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
326	>
327	>	e.execute(r);
328	>	try {
329	>	e.shutdown();
330	>	} catch (SecurityException ok) {
331		}
332	<
333	<	public T call() throws Exception {
334	<	Future<T> ftask = Executors.execute(exec, func);
335	<	try {
336	<	return ftask.get(msecs, TimeUnit.MILLISECONDS);
344	<	} finally {
345	<	ftask.cancel(true);
346	<	}
332	>
333	>	try {
334	>	Thread.sleep(SHORT_DELAY_MS);
335	>	} finally {
336	>	joinPool(e);
337		}
338		}
339
340	+	/**
341	+	* ThreadPoolExecutor using privilegedThreadFactory has
342	+	* specified group, priority, daemon status, name,
343	+	* access control context and context class loader
344	+	*/
345	+	public void testPrivilegedThreadFactory() throws Exception {
346	+	Policy savedPolicy = null;
347	+	try {
348	+	savedPolicy = Policy.getPolicy();
349	+	AdjustablePolicy policy = new AdjustablePolicy();
350	+	policy.addPermission(new RuntimePermission("getContextClassLoader"));
351	+	policy.addPermission(new RuntimePermission("setContextClassLoader"));
352	+	Policy.setPolicy(policy);
353	+	} catch (AccessControlException ok) {
354	+	return;
355	+	}
356	+	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
357	+	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
358	+	final AccessControlContext thisacc = AccessController.getContext();
359	+	Runnable r = new Runnable() {
360	+	public void run() {
361	+	try {
362	+	Thread current = Thread.currentThread();
363	+	threadAssertTrue(!current.isDaemon());
364	+	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
365	+	ThreadGroup g = current.getThreadGroup();
366	+	SecurityManager s = System.getSecurityManager();
367	+	if (s != null)
368	+	threadAssertTrue(g == s.getThreadGroup());
369	+	else
370	+	threadAssertTrue(g == egroup);
371	+	String name = current.getName();
372	+	threadAssertTrue(name.endsWith("thread-1"));
373	+	threadAssertTrue(thisccl == current.getContextClassLoader());
374	+	threadAssertTrue(thisacc.equals(AccessController.getContext()));
375	+	} catch (SecurityException ok) {
376	+	// Also pass if not allowed to change settings
377	+	}
378	+	}
379	+	};
380	+	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
381
382	<	private static class Fib implements Callable<BigInteger> {
383	<	private final BigInteger n;
384	<	Fib(long n) {
385	<	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
386	<	this.n = BigInteger.valueOf(n);
382	>	Policy.setPolicy(savedPolicy);
383	>	e.execute(r);
384	>	try {
385	>	e.shutdown();
386	>	} catch (SecurityException ok) {
387		}
388	<	public BigInteger call() {
389	<	BigInteger f1 = BigInteger.ONE;
390	<	BigInteger f2 = f1;
391	<	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
361	<	BigInteger t = f1.add(f2);
362	<	f1 = f2;
363	<	f2 = t;
364	<	}
365	<	return f1;
388	>	try {
389	>	Thread.sleep(SHORT_DELAY_MS);
390	>	} finally {
391	>	joinPool(e);
392		}
367	–	};
393
394	+	}
395	+
396	+	void checkCCL() {
397	+	SecurityManager sm = System.getSecurityManager();
398	+	if (sm != null) {
399	+	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
400	+	sm.checkPermission(new RuntimePermission("getClassLoader"));
401	+	}
402	+	}
403	+
404	+	class CheckCCL implements Callable<Object> {
405	+	public Object call() {
406	+	checkCCL();
407	+	return null;
408	+	}
409	+	}
410	+
411	+
412	+	/**
413	+	* Without class loader permissions, creating
414	+	* privilegedCallableUsingCurrentClassLoader throws ACE
415	+	*/
416	+	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
417	+	Policy savedPolicy = null;
418	+	try {
419	+	savedPolicy = Policy.getPolicy();
420	+	AdjustablePolicy policy = new AdjustablePolicy();
421	+	Policy.setPolicy(policy);
422	+	} catch (AccessControlException ok) {
423	+	return;
424	+	}
425	+
426	+	// Check if program still has too many permissions to run test
427	+	try {
428	+	checkCCL();
429	+	// too many privileges to test; so return
430	+	Policy.setPolicy(savedPolicy);
431	+	return;
432	+	} catch (AccessControlException ok) {
433	+	}
434	+
435	+	try {
436	+	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
437	+	shouldThrow();
438	+	} catch (AccessControlException success) {
439	+	} finally {
440	+	Policy.setPolicy(savedPolicy);
441	+	}
442	+	}
443	+
444	+	/**
445	+	* With class loader permissions, calling
446	+	* privilegedCallableUsingCurrentClassLoader does not throw ACE
447	+	*/
448	+	public void testprivilegedCallableUsingCCLWithPrivs() throws Exception {
449	+	Policy savedPolicy = null;
450	+	try {
451	+	savedPolicy = Policy.getPolicy();
452	+	AdjustablePolicy policy = new AdjustablePolicy();
453	+	policy.addPermission(new RuntimePermission("getContextClassLoader"));
454	+	policy.addPermission(new RuntimePermission("setContextClassLoader"));
455	+	Policy.setPolicy(policy);
456	+	} catch (AccessControlException ok) {
457	+	return;
458	+	}
459	+
460	+	try {
461	+	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
462	+	task.call();
463	+	}
464	+	finally {
465	+	Policy.setPolicy(savedPolicy);
466	+	}
467	+	}
468	+
469	+	/**
470	+	* Without permissions, calling privilegedCallable throws ACE
471	+	*/
472	+	public void testprivilegedCallableWithNoPrivs() throws Exception {
473	+	Callable task;
474	+	Policy savedPolicy = null;
475	+	AdjustablePolicy policy = null;
476	+	AccessControlContext noprivAcc = null;
477	+	try {
478	+	savedPolicy = Policy.getPolicy();
479	+	policy = new AdjustablePolicy();
480	+	Policy.setPolicy(policy);
481	+	noprivAcc = AccessController.getContext();
482	+	task = Executors.privilegedCallable(new CheckCCL());
483	+	Policy.setPolicy(savedPolicy);
484	+	} catch (AccessControlException ok) {
485	+	return; // program has too few permissions to set up test
486	+	}
487	+
488	+	// Make sure that program doesn't have too many permissions
489	+	try {
490	+	AccessController.doPrivileged(new PrivilegedAction() {
491	+	public Object run() {
492	+	checkCCL();
493	+	return null;
494	+	}}, noprivAcc);
495	+	// too many permssions; skip test
496	+	return;
497	+	} catch (AccessControlException ok) {
498	+	}
499	+
500	+	try {
501	+	task.call();
502	+	shouldThrow();
503	+	} catch (AccessControlException success) {}
504	+	}
505	+
506	+	/**
507	+	* With permissions, calling privilegedCallable succeeds
508	+	*/
509	+	public void testprivilegedCallableWithPrivs() throws Exception {
510	+	Policy savedPolicy = null;
511	+	try {
512	+	savedPolicy = Policy.getPolicy();
513	+	AdjustablePolicy policy = new AdjustablePolicy();
514	+	policy.addPermission(new RuntimePermission("getContextClassLoader"));
515	+	policy.addPermission(new RuntimePermission("setContextClassLoader"));
516	+	Policy.setPolicy(policy);
517	+	} catch (AccessControlException ok) {
518	+	return;
519	+	}
520	+
521	+	Callable task = Executors.privilegedCallable(new CheckCCL());
522	+	try {
523	+	task.call();
524	+	} finally {
525	+	Policy.setPolicy(savedPolicy);
526	+	}
527	+	}
528	+
529	+	/**
530	+	* callable(Runnable) returns null when called
531	+	*/
532	+	public void testCallable1() throws Exception {
533	+	Callable c = Executors.callable(new NoOpRunnable());
534	+	assertNull(c.call());
535	+	}
536	+
537	+	/**
538	+	* callable(Runnable, result) returns result when called
539	+	*/
540	+	public void testCallable2() throws Exception {
541	+	Callable c = Executors.callable(new NoOpRunnable(), one);
542	+	assertEquals(one, c.call());
543	+	}
544	+
545	+	/**
546	+	* callable(PrivilegedAction) returns its result when called
547	+	*/
548	+	public void testCallable3() throws Exception {
549	+	Callable c = Executors.callable(new PrivilegedAction() {
550	+	public Object run() { return one; }});
551	+	assertEquals(one, c.call());
552	+	}
553	+
554	+	/**
555	+	* callable(PrivilegedExceptionAction) returns its result when called
556	+	*/
557	+	public void testCallable4() throws Exception {
558	+	Callable c = Executors.callable(new PrivilegedExceptionAction() {
559	+	public Object run() { return one; }});
560	+	assertEquals(one, c.call());
561	+	}
562	+
563	+
564	+	/**
565	+	* callable(null Runnable) throws NPE
566	+	*/
567	+	public void testCallableNPE1() {
568	+	try {
569	+	Callable c = Executors.callable((Runnable) null);
570	+	shouldThrow();
571	+	} catch (NullPointerException success) {}
572	+	}
573	+
574	+	/**
575	+	* callable(null, result) throws NPE
576	+	*/
577	+	public void testCallableNPE2() {
578	+	try {
579	+	Callable c = Executors.callable((Runnable) null, one);
580	+	shouldThrow();
581	+	} catch (NullPointerException success) {}
582	+	}
583	+
584	+	/**
585	+	* callable(null PrivilegedAction) throws NPE
586	+	*/
587	+	public void testCallableNPE3() {
588	+	try {
589	+	Callable c = Executors.callable((PrivilegedAction) null);
590	+	shouldThrow();
591	+	} catch (NullPointerException success) {}
592	+	}
593	+
594	+	/**
595	+	* callable(null PrivilegedExceptionAction) throws NPE
596	+	*/
597	+	public void testCallableNPE4() {
598	+	try {
599	+	Callable c = Executors.callable((PrivilegedExceptionAction) null);
600	+	shouldThrow();
601	+	} catch (NullPointerException success) {}
602	+	}
603
604
605		}

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