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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 1.23 by jsr166, Thu Nov 19 03:55:29 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
#	Line 10 | Line 11 | import junit.framework.*;
11		import java.util.*;
12		import java.util.concurrent.*;
13		import java.math.BigInteger;
14	+	import java.security.*;
15
16	<	public class ExecutorsTest extends JSR166TestCase{
15	<
16	>	public class ExecutorsTest extends JSR166TestCase {
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run (suite());
19		}
19	–
20	–
20		public static Test suite() {
21	<	return new TestSuite(ExecutorsTest.class);
21	>	return new TestSuite(ExecutorsTest.class);
22		}
23
24	<	/**
25	<	*   execute(Executor, Runnable) will throw
26	<	*  RejectedExecutionException Attempting to execute a runnable on
27	<	*  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	<	}
24	>	static class TimedCallable<T> implements Callable<T> {
25	>	private final ExecutorService exec;
26	>	private final Callable<T> func;
27	>	private final long msecs;
28
29	<	/**
30	<	*   execute(Executor, Callable) will throw
31	<	*  RejectedExecutionException Attempting to execute a callable on
32	<	*  a full ThreadPool will cause such an exception here, up to 5
33	<	*  runnables are attempted on a pool capable on handling one
34	<	*  until it throws an exception
35	<	*/
36	<	public void testExecute2(){
37	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
38	<	try{
39	<	for(int i = 0; i < 5; ++i) {
40	<	Executors.execute(p, new SmallCallable());
29	>	TimedCallable(ExecutorService exec, Callable<T> func, long msecs) {
30	>	this.exec = exec;
31	>	this.func = func;
32	>	this.msecs = msecs;
33	>	}
34	>
35	>	public T call() throws Exception {
36	>	Future<T> ftask = exec.submit(func);
37	>	try {
38	>	return ftask.get(msecs, TimeUnit.MILLISECONDS);
39	>	} finally {
40	>	ftask.cancel(true);
41		}
42	<	fail("should throw");
58	<	}catch(RejectedExecutionException e){}
59	<	joinPool(p);
42	>	}
43		}
44
45
46	+	private static class Fib implements Callable<BigInteger> {
47	+	private final BigInteger n;
48	+	Fib(long n) {
49	+	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
50	+	this.n = BigInteger.valueOf(n);
51	+	}
52	+	public BigInteger call() {
53	+	BigInteger f1 = BigInteger.ONE;
54	+	BigInteger f2 = f1;
55	+	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
56	+	BigInteger t = f1.add(f2);
57	+	f1 = f2;
58	+	f2 = t;
59	+	}
60	+	return f1;
61	+	}
62	+	};
63	+
64		/**
65	<	*   invoke(Executor, Runnable) throws InterruptedException
66	<	*  A single use of invoke starts that will wait long enough
67	<	*  for the invoking thread to be interrupted
68	<	*/
69	<	public void testInvoke2(){
70	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
71	<	Thread t = new Thread(new Runnable() {
72	<	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");
95	<	}
96	<	joinPool(p);
65	>	* A newCachedThreadPool can execute runnables
66	>	*/
67	>	public void testNewCachedThreadPool1() {
68	>	ExecutorService e = Executors.newCachedThreadPool();
69	>	e.execute(new NoOpRunnable());
70	>	e.execute(new NoOpRunnable());
71	>	e.execute(new NoOpRunnable());
72	>	joinPool(e);
73		}
74
75		/**
76	<	*   invoke(Executor, Runnable) will throw
77	<	*  ExecutionException An ExecutionException occurs when the
78	<	*  underlying Runnable throws an exception, here the
79	<	*  DivideByZeroException will cause an ExecutionException
80	<	*/
81	<	public void testInvoke3(){
82	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
83	<	try{
108	<	Runnable r = new Runnable(){
109	<	public void run(){
110	<	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);
76	>	* A newCachedThreadPool with given ThreadFactory can execute runnables
77	>	*/
78	>	public void testNewCachedThreadPool2() {
79	>	ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
80	>	e.execute(new NoOpRunnable());
81	>	e.execute(new NoOpRunnable());
82	>	e.execute(new NoOpRunnable());
83	>	joinPool(e);
84		}
85
86	+	/**
87	+	* A newCachedThreadPool with null ThreadFactory throws NPE
88	+	*/
89	+	public void testNewCachedThreadPool3() {
90	+	try {
91	+	ExecutorService e = Executors.newCachedThreadPool(null);
92	+	shouldThrow();
93	+	} catch (NullPointerException success) {}
94	+	}
95
96
97		/**
98	<	*   invoke(Executor, Callable) throws
99	<	*  InterruptedException A single use of invoke starts that will
100	<	*  wait long enough for the invoking thread to be interrupted
101	<	*/
102	<	public void testInvoke5(){
103	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
104	<
105	<	final Callable c = new Callable(){
106	<	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	<	};
147	<
98	>	* A new SingleThreadExecutor can execute runnables
99	>	*/
100	>	public void testNewSingleThreadExecutor1() {
101	>	ExecutorService e = Executors.newSingleThreadExecutor();
102	>	e.execute(new NoOpRunnable());
103	>	e.execute(new NoOpRunnable());
104	>	e.execute(new NoOpRunnable());
105	>	joinPool(e);
106	>	}
107
108	<
109	<	Thread t = new Thread(new Runnable(){
110	<	public void run(){
111	<	try{
112	<	c.call();
113	<	}catch(Exception e){}
114	<	}
115	<	});
116	<	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);
108	>	/**
109	>	* A new SingleThreadExecutor with given ThreadFactory can execute runnables
110	>	*/
111	>	public void testNewSingleThreadExecutor2() {
112	>	ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
113	>	e.execute(new NoOpRunnable());
114	>	e.execute(new NoOpRunnable());
115	>	e.execute(new NoOpRunnable());
116	>	joinPool(e);
117		}
118
119		/**
120	<	*   invoke(Executor, Callable) will throw ExecutionException
121	<	*  An ExecutionException occurs when the underlying Runnable throws
122	<	*  an exception, here the DivideByZeroException will cause an ExecutionException
123	<	*/
124	<	public void testInvoke6(){
125	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
126	<
177	<	try{
178	<	Callable c = new Callable(){
179	<	public Object call(){
180	<	int i = 5/0;
181	<	return Boolean.TRUE;
182	<	}
183	<	};
184	<
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	>	* A new SingleThreadExecutor with null ThreadFactory throws NPE
121	>	*/
122	>	public void testNewSingleThreadExecutor3() {
123	>	try {
124	>	ExecutorService e = Executors.newSingleThreadExecutor(null);
125	>	shouldThrow();
126	>	} catch (NullPointerException success) {}
127		}
128
129	<	public void testExecuteRunnable () {
129	>	/**
130	>	* A new SingleThreadExecutor cannot be casted to concrete implementation
131	>	*/
132	>	public void testCastNewSingleThreadExecutor() {
133	>	ExecutorService e = Executors.newSingleThreadExecutor();
134		try {
135	<	Executor e = new DirectExecutor();
136	<	Task task = new Task();
135	>	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
136	>	shouldThrow();
137	>	} catch (ClassCastException success) {
138	>	} finally {
139	>	joinPool(e);
140	>	}
141	>	}
142
201	–	assertFalse("task should not be complete", task.isCompleted());
143
144	<	Future<String> future = Executors.execute(e, task, TEST_STRING);
145	<	String result = future.get();
144	>	/**
145	>	* A new newFixedThreadPool can execute runnables
146	>	*/
147	>	public void testNewFixedThreadPool1() {
148	>	ExecutorService e = Executors.newFixedThreadPool(2);
149	>	e.execute(new NoOpRunnable());
150	>	e.execute(new NoOpRunnable());
151	>	e.execute(new NoOpRunnable());
152	>	joinPool(e);
153	>	}
154
155	<	assertTrue("task should be complete", task.isCompleted());
156	<	assertSame("should return test string", TEST_STRING, result);
157	<	}
158	<	catch (ExecutionException ex) {
159	<	fail("Unexpected exception");
160	<	}
161	<	catch (InterruptedException ex) {
162	<	fail("Unexpected exception");
163	<	}
155	>	/**
156	>	* A new newFixedThreadPool with given ThreadFactory can execute runnables
157	>	*/
158	>	public void testNewFixedThreadPool2() {
159	>	ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
160	>	e.execute(new NoOpRunnable());
161	>	e.execute(new NoOpRunnable());
162	>	e.execute(new NoOpRunnable());
163	>	joinPool(e);
164		}
165
166	<	public void testInvokeRunnable () {
166	>	/**
167	>	* A new newFixedThreadPool with null ThreadFactory throws NPE
168	>	*/
169	>	public void testNewFixedThreadPool3() {
170		try {
171	<	Executor e = new DirectExecutor();
172	<	Task task = new Task();
171	>	ExecutorService e = Executors.newFixedThreadPool(2, null);
172	>	shouldThrow();
173	>	} catch (NullPointerException success) {}
174	>	}
175
176	<	assertFalse("task should not be complete", task.isCompleted());
176	>	/**
177	>	* A new newFixedThreadPool with 0 threads throws IAE
178	>	*/
179	>	public void testNewFixedThreadPool4() {
180	>	try {
181	>	ExecutorService e = Executors.newFixedThreadPool(0);
182	>	shouldThrow();
183	>	} catch (IllegalArgumentException success) {}
184	>	}
185
224	–	Executors.invoke(e, task);
186
187	<	assertTrue("task should be complete", task.isCompleted());
188	<	}
189	<	catch (ExecutionException ex) {
190	<	fail("Unexpected exception");
191	<	}
192	<	catch (InterruptedException ex) {
193	<	fail("Unexpected exception");
194	<	}
187	>	/**
188	>	* An unconfigurable newFixedThreadPool can execute runnables
189	>	*/
190	>	public void testunconfigurableExecutorService() {
191	>	ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
192	>	e.execute(new NoOpRunnable());
193	>	e.execute(new NoOpRunnable());
194	>	e.execute(new NoOpRunnable());
195	>	joinPool(e);
196		}
197
198	<	public void testExecuteCallable () {
198	>	/**
199	>	* unconfigurableExecutorService(null) throws NPE
200	>	*/
201	>	public void testunconfigurableExecutorServiceNPE() {
202		try {
203	<	Executor e = new DirectExecutor();
204	<	Future<String> future = Executors.execute(e, new StringTask());
205	<	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	<	}
203	>	ExecutorService e = Executors.unconfigurableExecutorService(null);
204	>	shouldThrow();
205	>	} catch (NullPointerException success) {}
206		}
207
208	<	public void testInvokeCallable () {
208	>	/**
209	>	* unconfigurableScheduledExecutorService(null) throws NPE
210	>	*/
211	>	public void testunconfigurableScheduledExecutorServiceNPE() {
212		try {
213	<	Executor e = new DirectExecutor();
214	<	String result = Executors.invoke(e, new StringTask());
215	<
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	<	}
213	>	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
214	>	shouldThrow();
215	>	} catch (NullPointerException success) {}
216		}
217
267	–	private static final String TEST_STRING = "a test string";
218
219	<	private static class Task implements Runnable {
220	<	public void run() { completed = true; }
221	<	public boolean isCompleted() { return completed; }
222	<	public void reset() { completed = false; }
223	<	private boolean completed = false;
219	>	/**
220	>	* a newSingleThreadScheduledExecutor successfully runs delayed task
221	>	*/
222	>	public void testNewSingleThreadScheduledExecutor() throws Exception {
223	>	try {
224	>	TrackedCallable callable = new TrackedCallable();
225	>	ScheduledExecutorService p1 = Executors.newSingleThreadScheduledExecutor();
226	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.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	>	} catch (RejectedExecutionException e) {}
233		}
234
235	<	private static class StringTask implements Callable<String> {
236	<	public String call() { return TEST_STRING; }
235	>	/**
236	>	* a newScheduledThreadPool successfully runs delayed task
237	>	*/
238	>	public void testnewScheduledThreadPool() throws Exception {
239	>	try {
240	>	TrackedCallable callable = new TrackedCallable();
241	>	ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2);
242	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
243	>	assertFalse(callable.done);
244	>	Thread.sleep(MEDIUM_DELAY_MS);
245	>	assertTrue(callable.done);
246	>	assertEquals(Boolean.TRUE, f.get());
247	>	joinPool(p1);
248	>	} catch (RejectedExecutionException e) {}
249		}
250
251	<	static class DirectExecutor implements Executor {
252	<	public void execute(Runnable r) {
253	<	r.run();
254	<	}
251	>	/**
252	>	* an unconfigurable  newScheduledThreadPool successfully runs delayed task
253	>	*/
254	>	public void testunconfigurableScheduledExecutorService() throws Exception {
255	>	try {
256	>	TrackedCallable callable = new TrackedCallable();
257	>	ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2));
258	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
259	>	assertFalse(callable.done);
260	>	Thread.sleep(MEDIUM_DELAY_MS);
261	>	assertTrue(callable.done);
262	>	assertEquals(Boolean.TRUE, f.get());
263	>	joinPool(p1);
264	>	} catch (RejectedExecutionException e) {}
265		}
266
267		/**
268	<	* Check that timeouts from execute will time out if they compute
288	<	* too long.
268	>	*  timeouts from execute will time out if they compute too long.
269		*/
270	<
291	<	public void testTimedCallable() {
270	>	public void testTimedCallable() throws Exception {
271		int N = 10000;
272		ExecutorService executor = Executors.newSingleThreadExecutor();
273		List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
274		try {
275		long startTime = System.currentTimeMillis();
276	<
276	>
277		long i = 0;
278		while (tasks.size() < N) {
279		tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
280		i += 10;
281		}
282	<
282	>
283		int iters = 0;
284		BigInteger sum = BigInteger.ZERO;
285		for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
#	Line 312 | Line 291 | public class ExecutorsTest extends JSR16
291		assertTrue(iters > 0);
292		return;
293		}
315	–	catch (Exception e) {
316	–	fail("unexpected exception: " + e);
317	–	}
294		}
295		// if by chance we didn't ever time out, total time must be small
296		long elapsed = System.currentTimeMillis() - startTime;
#	Line 325 | Line 301 | public class ExecutorsTest extends JSR16
301		}
302		}
303
304	<
305	<	static class TimedCallable<T> implements Callable<T> {
306	<	private final Executor exec;
307	<	private final Callable<T> func;
308	<	private final long msecs;
309	<
310	<	TimedCallable(Executor exec, Callable<T> func, long msecs) {
311	<	this.exec = exec;
312	<	this.func = func;
313	<	this.msecs = msecs;
304	>
305	>	/**
306	>	* ThreadPoolExecutor using defaultThreadFactory has
307	>	* specified group, priority, daemon status, and name
308	>	*/
309	>	public void testDefaultThreadFactory() throws Exception {
310	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
311	>	Runnable r = new Runnable() {
312	>	public void run() {
313	>	try {
314	>	Thread current = Thread.currentThread();
315	>	threadAssertTrue(!current.isDaemon());
316	>	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
317	>	ThreadGroup g = current.getThreadGroup();
318	>	SecurityManager s = System.getSecurityManager();
319	>	if (s != null)
320	>	threadAssertTrue(g == s.getThreadGroup());
321	>	else
322	>	threadAssertTrue(g == egroup);
323	>	String name = current.getName();
324	>	threadAssertTrue(name.endsWith("thread-1"));
325	>	} catch (SecurityException ok) {
326	>	// Also pass if not allowed to change setting
327	>	}
328	>	}
329	>	};
330	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
331	>
332	>	e.execute(r);
333	>	try {
334	>	e.shutdown();
335	>	} catch (SecurityException ok) {
336		}
337	<
338	<	public T call() throws Exception {
339	<	Future<T> ftask = Executors.execute(exec, func);
340	<	try {
341	<	return ftask.get(msecs, TimeUnit.MILLISECONDS);
344	<	} finally {
345	<	ftask.cancel(true);
346	<	}
337	>
338	>	try {
339	>	Thread.sleep(SHORT_DELAY_MS);
340	>	} finally {
341	>	joinPool(e);
342		}
343		}
344
345	+	/**
346	+	* ThreadPoolExecutor using privilegedThreadFactory has
347	+	* specified group, priority, daemon status, name,
348	+	* access control context and context class loader
349	+	*/
350	+	public void testPrivilegedThreadFactory() throws Exception {
351	+	Policy savedPolicy = null;
352	+	try {
353	+	savedPolicy = Policy.getPolicy();
354	+	AdjustablePolicy policy = new AdjustablePolicy();
355	+	policy.addPermission(new RuntimePermission("getContextClassLoader"));
356	+	policy.addPermission(new RuntimePermission("setContextClassLoader"));
357	+	Policy.setPolicy(policy);
358	+	} catch (AccessControlException ok) {
359	+	return;
360	+	}
361	+	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
362	+	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
363	+	final AccessControlContext thisacc = AccessController.getContext();
364	+	Runnable r = new Runnable() {
365	+	public void run() {
366	+	try {
367	+	Thread current = Thread.currentThread();
368	+	threadAssertTrue(!current.isDaemon());
369	+	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
370	+	ThreadGroup g = current.getThreadGroup();
371	+	SecurityManager s = System.getSecurityManager();
372	+	if (s != null)
373	+	threadAssertTrue(g == s.getThreadGroup());
374	+	else
375	+	threadAssertTrue(g == egroup);
376	+	String name = current.getName();
377	+	threadAssertTrue(name.endsWith("thread-1"));
378	+	threadAssertTrue(thisccl == current.getContextClassLoader());
379	+	threadAssertTrue(thisacc.equals(AccessController.getContext()));
380	+	} catch (SecurityException ok) {
381	+	// Also pass if not allowed to change settings
382	+	}
383	+	}
384	+	};
385	+	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
386
387	<	private static class Fib implements Callable<BigInteger> {
388	<	private final BigInteger n;
389	<	Fib(long n) {
390	<	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
391	<	this.n = BigInteger.valueOf(n);
387	>	Policy.setPolicy(savedPolicy);
388	>	e.execute(r);
389	>	try {
390	>	e.shutdown();
391	>	} catch (SecurityException ok) {
392		}
393	<	public BigInteger call() {
394	<	BigInteger f1 = BigInteger.ONE;
395	<	BigInteger f2 = f1;
396	<	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
397	<	BigInteger t = f1.add(f2);
398	<	f1 = f2;
399	<	f2 = t;
400	<	}
401	<	return f1;
393	>	try {
394	>	Thread.sleep(SHORT_DELAY_MS);
395	>	} finally {
396	>	joinPool(e);
397	>	}
398	>
399	>	}
400	>
401	>	void checkCCL() {
402	>	SecurityManager sm = System.getSecurityManager();
403	>	if (sm != null) {
404	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
405	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
406	>	}
407	>	}
408	>
409	>	class CheckCCL implements Callable<Object> {
410	>	public Object call() {
411	>	checkCCL();
412	>	return null;
413	>	}
414	>	}
415	>
416	>
417	>	/**
418	>	* Without class loader permissions, creating
419	>	* privilegedCallableUsingCurrentClassLoader throws ACE
420	>	*/
421	>	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
422	>	Policy savedPolicy = null;
423	>	try {
424	>	savedPolicy = Policy.getPolicy();
425	>	AdjustablePolicy policy = new AdjustablePolicy();
426	>	Policy.setPolicy(policy);
427	>	} catch (AccessControlException ok) {
428	>	return;
429		}
367	–	};
430
431	+	// Check if program still has too many permissions to run test
432	+	try {
433	+	checkCCL();
434	+	// too many privileges to test; so return
435	+	Policy.setPolicy(savedPolicy);
436	+	return;
437	+	} catch (AccessControlException ok) {
438	+	}
439	+
440	+	try {
441	+	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
442	+	shouldThrow();
443	+	} catch (AccessControlException success) {
444	+	} finally {
445	+	Policy.setPolicy(savedPolicy);
446	+	}
447	+	}
448	+
449	+	/**
450	+	* With class loader permissions, calling
451	+	* privilegedCallableUsingCurrentClassLoader does not throw ACE
452	+	*/
453	+	public void testprivilegedCallableUsingCCLWithPrivs() throws Exception {
454	+	Policy savedPolicy = null;
455	+	try {
456	+	savedPolicy = Policy.getPolicy();
457	+	AdjustablePolicy policy = new AdjustablePolicy();
458	+	policy.addPermission(new RuntimePermission("getContextClassLoader"));
459	+	policy.addPermission(new RuntimePermission("setContextClassLoader"));
460	+	Policy.setPolicy(policy);
461	+	} catch (AccessControlException ok) {
462	+	return;
463	+	}
464	+
465	+	try {
466	+	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
467	+	task.call();
468	+	}
469	+	finally {
470	+	Policy.setPolicy(savedPolicy);
471	+	}
472	+	}
473	+
474	+	/**
475	+	* Without permissions, calling privilegedCallable throws ACE
476	+	*/
477	+	public void testprivilegedCallableWithNoPrivs() throws Exception {
478	+	Callable task;
479	+	Policy savedPolicy = null;
480	+	AdjustablePolicy policy = null;
481	+	AccessControlContext noprivAcc = null;
482	+	try {
483	+	savedPolicy = Policy.getPolicy();
484	+	policy = new AdjustablePolicy();
485	+	Policy.setPolicy(policy);
486	+	noprivAcc = AccessController.getContext();
487	+	task = Executors.privilegedCallable(new CheckCCL());
488	+	Policy.setPolicy(savedPolicy);
489	+	} catch (AccessControlException ok) {
490	+	return; // program has too few permissions to set up test
491	+	}
492	+
493	+	// Make sure that program doesn't have too many permissions
494	+	try {
495	+	AccessController.doPrivileged(new PrivilegedAction() {
496	+	public Object run() {
497	+	checkCCL();
498	+	return null;
499	+	}}, noprivAcc);
500	+	// too many permssions; skip test
501	+	return;
502	+	} catch (AccessControlException ok) {
503	+	}
504	+
505	+	try {
506	+	task.call();
507	+	shouldThrow();
508	+	} catch (AccessControlException success) {}
509	+	}
510	+
511	+	/**
512	+	* With permissions, calling privilegedCallable succeeds
513	+	*/
514	+	public void testprivilegedCallableWithPrivs() throws Exception {
515	+	Policy savedPolicy = null;
516	+	try {
517	+	savedPolicy = Policy.getPolicy();
518	+	AdjustablePolicy policy = new AdjustablePolicy();
519	+	policy.addPermission(new RuntimePermission("getContextClassLoader"));
520	+	policy.addPermission(new RuntimePermission("setContextClassLoader"));
521	+	Policy.setPolicy(policy);
522	+	} catch (AccessControlException ok) {
523	+	return;
524	+	}
525	+
526	+	Callable task = Executors.privilegedCallable(new CheckCCL());
527	+	try {
528	+	task.call();
529	+	} finally {
530	+	Policy.setPolicy(savedPolicy);
531	+	}
532	+	}
533	+
534	+	/**
535	+	* callable(Runnable) returns null when called
536	+	*/
537	+	public void testCallable1() throws Exception {
538	+	Callable c = Executors.callable(new NoOpRunnable());
539	+	assertNull(c.call());
540	+	}
541	+
542	+	/**
543	+	* callable(Runnable, result) returns result when called
544	+	*/
545	+	public void testCallable2() throws Exception {
546	+	Callable c = Executors.callable(new NoOpRunnable(), one);
547	+	assertEquals(one, c.call());
548	+	}
549	+
550	+	/**
551	+	* callable(PrivilegedAction) returns its result when called
552	+	*/
553	+	public void testCallable3() throws Exception {
554	+	Callable c = Executors.callable(new PrivilegedAction() {
555	+	public Object run() { return one; }});
556	+	assertEquals(one, c.call());
557	+	}
558	+
559	+	/**
560	+	* callable(PrivilegedExceptionAction) returns its result when called
561	+	*/
562	+	public void testCallable4() throws Exception {
563	+	Callable c = Executors.callable(new PrivilegedExceptionAction() {
564	+	public Object run() { return one; }});
565	+	assertEquals(one, c.call());
566	+	}
567	+
568	+
569	+	/**
570	+	* callable(null Runnable) throws NPE
571	+	*/
572	+	public void testCallableNPE1() {
573	+	try {
574	+	Callable c = Executors.callable((Runnable) null);
575	+	shouldThrow();
576	+	} catch (NullPointerException success) {}
577	+	}
578	+
579	+	/**
580	+	* callable(null, result) throws NPE
581	+	*/
582	+	public void testCallableNPE2() {
583	+	try {
584	+	Callable c = Executors.callable((Runnable) null, one);
585	+	shouldThrow();
586	+	} catch (NullPointerException success) {}
587	+	}
588	+
589	+	/**
590	+	* callable(null PrivilegedAction) throws NPE
591	+	*/
592	+	public void testCallableNPE3() {
593	+	try {
594	+	Callable c = Executors.callable((PrivilegedAction) null);
595	+	shouldThrow();
596	+	} catch (NullPointerException success) {}
597	+	}
598	+
599	+	/**
600	+	* callable(null PrivilegedExceptionAction) throws NPE
601	+	*/
602	+	public void testCallableNPE4() {
603	+	try {
604	+	Callable c = Executors.callable((PrivilegedExceptionAction) null);
605	+	shouldThrow();
606	+	} catch (NullPointerException success) {}
607	+	}
608
609
610		}

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