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

Comparing jsr166/src/test/tck/ExecutorsTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:55 2003 UTC vs.
Revision 1.21 by jsr166, Mon Nov 16 04:57:10 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 java.math.BigInteger;
14	+	import java.security.*;
15
16	<	public class ExecutorsTest extends TestCase{
14	<
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		}
18	–
19	–
20		public static Test suite() {
21	<	return new TestSuite(ExecutorsTest.class);
21	>	return new TestSuite(ExecutorsTest.class);
22		}
23
24	<	private static long SHORT_DELAY_MS = 100;
25	<	private static long MEDIUM_DELAY_MS = 1000;
26	<	private static long LONG_DELAY_MS = 10000;
27	<
28	<	class SleepRun implements Runnable {
29	<	public void run() {
30	<	try{
31	<	Thread.sleep(MEDIUM_DELAY_MS);
32	<	} catch(InterruptedException e){
33	<	fail("unexpected exception");
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	>	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		}
43		}
37	–
44
45	<	class SleepCall implements Callable {
46	<	public Object call(){
47	<	try{
48	<	Thread.sleep(MEDIUM_DELAY_MS);
49	<	}catch(InterruptedException e){
50	<	fail("unexpected exception");
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 Boolean.TRUE;
60	>	return f1;
61		}
62	+	};
63	+
64	+	/**
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	+	* 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	+	}
94	+	catch (NullPointerException success) {
95	+	}
96	+	}
97
98
99		/**
100	<	*  Test to verify execute(Executor, Runnable) will throw
54	<	*  RejectedExecutionException Attempting to execute a runnable on
55	<	*  a full ThreadPool will cause such an exception here, up to 5
56	<	*  runnables are attempted on a pool capable on handling one
57	<	*  until it throws an exception
100	>	* A new SingleThreadExecutor can execute runnables
101		*/
102	<	public void testExecute1(){
103	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
104	<	try{
105	<
106	<	for(int i = 0; i < 5; ++i){
107	<	Executors.execute(p, new SleepRun(), Boolean.TRUE);
65	<	}
66	<	fail("should throw");
67	<	} catch(RejectedExecutionException success){}
68	<	p.shutdownNow();
102	>	public void testNewSingleThreadExecutor1() {
103	>	ExecutorService e = Executors.newSingleThreadExecutor();
104	>	e.execute(new NoOpRunnable());
105	>	e.execute(new NoOpRunnable());
106	>	e.execute(new NoOpRunnable());
107	>	joinPool(e);
108		}
109
110		/**
111	<	*  Test to verify execute(Executor, Callable) will throw
112	<	*  RejectedExecutionException Attempting to execute a callable on
113	<	*  a full ThreadPool will cause such an exception here, up to 5
114	<	*  runnables are attempted on a pool capable on handling one
115	<	*  until it throws an exception
116	<	*/
117	<	public void testExecute2(){
118	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
80	<	try{
81	<	for(int i = 0; i < 5; ++i) {
82	<	Executors.execute(p, new SleepCall());
83	<	}
84	<	fail("should throw");
85	<	}catch(RejectedExecutionException e){}
86	<	p.shutdownNow();
111	>	* A new SingleThreadExecutor with given ThreadFactory can execute runnables
112	>	*/
113	>	public void testNewSingleThreadExecutor2() {
114	>	ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
115	>	e.execute(new NoOpRunnable());
116	>	e.execute(new NoOpRunnable());
117	>	e.execute(new NoOpRunnable());
118	>	joinPool(e);
119		}
120
121	+	/**
122	+	* A new SingleThreadExecutor with null ThreadFactory throws NPE
123	+	*/
124	+	public void testNewSingleThreadExecutor3() {
125	+	try {
126	+	ExecutorService e = Executors.newSingleThreadExecutor(null);
127	+	shouldThrow();
128	+	}
129	+	catch (NullPointerException success) {
130	+	}
131	+	}
132
133		/**
134	<	*  Test to verify invoke(Executor, Runnable) throws InterruptedException
135	<	*  A single use of invoke starts that will wait long enough
136	<	*  for the invoking thread to be interrupted
137	<	*/
138	<	public void testInvoke2(){
139	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
140	<	Thread t = new Thread(new Runnable() {
141	<	public void run(){
142	<	try{
143	<	Executors.invoke(p,new Runnable(){
101	<	public void run(){
102	<	try{
103	<	Thread.sleep(MEDIUM_DELAY_MS);
104	<	fail("should throw");
105	<	}catch(InterruptedException e){
106	<	}
107	<	}
108	<	});
109	<	} catch(InterruptedException success){
110	<	} catch(Exception e) {
111	<	fail("unexpected exception");
112	<	}
113	<
114	<	}
115	<	});
116	<	try{
117	<	t.start();
118	<	Thread.sleep(SHORT_DELAY_MS);
119	<	t.interrupt();
120	<	}catch(Exception e){
121	<	fail("unexpected exception");
122	<	}
123	<	p.shutdownNow();
134	>	* A new SingleThreadExecutor cannot be casted to concrete implementation
135	>	*/
136	>	public void testCastNewSingleThreadExecutor() {
137	>	ExecutorService e = Executors.newSingleThreadExecutor();
138	>	try {
139	>	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
140	>	} catch (ClassCastException success) {
141	>	} finally {
142	>	joinPool(e);
143	>	}
144		}
145
146	+
147		/**
148	<	*  Test to verify invoke(Executor, Runnable) will throw
149	<	*  ExecutionException An ExecutionException occurs when the
150	<	*  underlying Runnable throws an exception, here the
151	<	*  DivideByZeroException will cause an ExecutionException
152	<	*/
153	<	public void testInvoke3(){
154	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
155	<	try{
135	<	Runnable r = new Runnable(){
136	<	public void run(){
137	<	int i = 5/0;
138	<	}
139	<	};
140	<
141	<	for(int i =0; i < 5; i++){
142	<	Executors.invoke(p,r);
143	<	}
144	<
145	<	fail("should throw");
146	<	} catch(ExecutionException success){
147	<	} catch(Exception e){
148	<	fail("should throw EE");
149	<	}
150	<	p.shutdownNow();
148	>	* A new newFixedThreadPool can execute runnables
149	>	*/
150	>	public void testNewFixedThreadPool1() {
151	>	ExecutorService e = Executors.newFixedThreadPool(2);
152	>	e.execute(new NoOpRunnable());
153	>	e.execute(new NoOpRunnable());
154	>	e.execute(new NoOpRunnable());
155	>	joinPool(e);
156		}
157
158	+	/**
159	+	* A new newFixedThreadPool with given ThreadFactory can execute runnables
160	+	*/
161	+	public void testNewFixedThreadPool2() {
162	+	ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
163	+	e.execute(new NoOpRunnable());
164	+	e.execute(new NoOpRunnable());
165	+	e.execute(new NoOpRunnable());
166	+	joinPool(e);
167	+	}
168
169	+	/**
170	+	* A new newFixedThreadPool with null ThreadFactory throws NPE
171	+	*/
172	+	public void testNewFixedThreadPool3() {
173	+	try {
174	+	ExecutorService e = Executors.newFixedThreadPool(2, null);
175	+	shouldThrow();
176	+	}
177	+	catch (NullPointerException success) {
178	+	}
179	+	}
180
181		/**
182	<	*  Test to verify invoke(Executor, Callable) throws
183	<	*  InterruptedException A single use of invoke starts that will
184	<	*  wait long enough for the invoking thread to be interrupted
185	<	*/
186	<	public void testInvoke5(){
187	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
188	<
189	<	final Callable c = new Callable(){
190	<	public Object call(){
191	<	try{
166	<	Executors.invoke(p, new SleepCall());
167	<	fail("should throw");
168	<	}catch(InterruptedException e){}
169	<	catch(RejectedExecutionException e2){}
170	<	catch(ExecutionException e3){}
171	<	return Boolean.TRUE;
172	<	}
173	<	};
182	>	* A new newFixedThreadPool with 0 threads throws IAE
183	>	*/
184	>	public void testNewFixedThreadPool4() {
185	>	try {
186	>	ExecutorService e = Executors.newFixedThreadPool(0);
187	>	shouldThrow();
188	>	}
189	>	catch (IllegalArgumentException success) {
190	>	}
191	>	}
192
193
194	<
195	<	Thread t = new Thread(new Runnable(){
196	<	public void run(){
197	<	try{
198	<	c.call();
199	<	}catch(Exception e){}
200	<	}
201	<	});
202	<	try{
185	<	t.start();
186	<	Thread.sleep(SHORT_DELAY_MS);
187	<	t.interrupt();
188	<	t.join();
189	<	}catch(InterruptedException e){
190	<	fail("unexpected exception");
191	<	}
192	<
193	<	p.shutdownNow();
194	>	/**
195	>	* An unconfigurable newFixedThreadPool can execute runnables
196	>	*/
197	>	public void testunconfigurableExecutorService() {
198	>	ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
199	>	e.execute(new NoOpRunnable());
200	>	e.execute(new NoOpRunnable());
201	>	e.execute(new NoOpRunnable());
202	>	joinPool(e);
203		}
204
205		/**
206	<	*  Test to verify invoke(Executor, Callable) will throw ExecutionException
207	<	*  An ExecutionException occurs when the underlying Runnable throws
208	<	*  an exception, here the DivideByZeroException will cause an ExecutionException
209	<	*/
210	<	public void testInvoke6(){
211	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
212	<
213	<	try{
214	<	Callable c = new Callable(){
215	<	public Object call(){
216	<	int i = 5/0;
217	<	return Boolean.TRUE;
218	<	}
219	<	};
220	<
221	<	for(int i =0; i < 5; i++){
222	<	Executors.invoke(p,c);
206	>	* unconfigurableExecutorService(null) throws NPE
207	>	*/
208	>	public void testunconfigurableExecutorServiceNPE() {
209	>	try {
210	>	ExecutorService e = Executors.unconfigurableExecutorService(null);
211	>	}
212	>	catch (NullPointerException success) {
213	>	}
214	>	}
215	>
216	>	/**
217	>	* unconfigurableScheduledExecutorService(null) throws NPE
218	>	*/
219	>	public void testunconfigurableScheduledExecutorServiceNPE() {
220	>	try {
221	>	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
222	>	}
223	>	catch (NullPointerException success) {
224	>	}
225	>	}
226	>
227	>
228	>	/**
229	>	* a newSingleThreadScheduledExecutor successfully runs delayed task
230	>	*/
231	>	public void testNewSingleThreadScheduledExecutor() {
232	>	try {
233	>	TrackedCallable callable = new TrackedCallable();
234	>	ScheduledExecutorService p1 = Executors.newSingleThreadScheduledExecutor();
235	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
236	>	assertFalse(callable.done);
237	>	Thread.sleep(MEDIUM_DELAY_MS);
238	>	assertTrue(callable.done);
239	>	assertEquals(Boolean.TRUE, f.get());
240	>	joinPool(p1);
241	>	} catch (RejectedExecutionException e){}
242	>	catch (Exception e){
243	>	e.printStackTrace();
244	>	unexpectedException();
245	>	}
246	>	}
247	>
248	>	/**
249	>	* a newScheduledThreadPool successfully runs delayed task
250	>	*/
251	>	public void testnewScheduledThreadPool() {
252	>	try {
253	>	TrackedCallable callable = new TrackedCallable();
254	>	ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2);
255	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
256	>	assertFalse(callable.done);
257	>	Thread.sleep(MEDIUM_DELAY_MS);
258	>	assertTrue(callable.done);
259	>	assertEquals(Boolean.TRUE, f.get());
260	>	joinPool(p1);
261	>	} catch (RejectedExecutionException e){}
262	>	catch (Exception e){
263	>	e.printStackTrace();
264	>	unexpectedException();
265	>	}
266	>	}
267	>
268	>	/**
269	>	* an unconfigurable  newScheduledThreadPool successfully runs delayed task
270	>	*/
271	>	public void testunconfigurableScheduledExecutorService() {
272	>	try {
273	>	TrackedCallable callable = new TrackedCallable();
274	>	ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2));
275	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
276	>	assertFalse(callable.done);
277	>	Thread.sleep(MEDIUM_DELAY_MS);
278	>	assertTrue(callable.done);
279	>	assertEquals(Boolean.TRUE, f.get());
280	>	joinPool(p1);
281	>	} catch (RejectedExecutionException e){}
282	>	catch (Exception e){
283	>	e.printStackTrace();
284	>	unexpectedException();
285	>	}
286	>	}
287	>
288	>	/**
289	>	*  timeouts from execute will time out if they compute too long.
290	>	*/
291	>	public void testTimedCallable() {
292	>	int N = 10000;
293	>	ExecutorService executor = Executors.newSingleThreadExecutor();
294	>	List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
295	>	try {
296	>	long startTime = System.currentTimeMillis();
297	>
298	>	long i = 0;
299	>	while (tasks.size() < N) {
300	>	tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
301	>	i += 10;
302		}
303	<
304	<	fail("should throw");
305	<	}catch(RejectedExecutionException e){}
306	<	catch(InterruptedException e2){}
307	<	catch(ExecutionException e3){}
308	<	p.shutdownNow();
303	>
304	>	int iters = 0;
305	>	BigInteger sum = BigInteger.ZERO;
306	>	for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
307	>	try {
308	>	++iters;
309	>	sum = sum.add(it.next().call());
310	>	}
311	>	catch (TimeoutException success) {
312	>	assertTrue(iters > 0);
313	>	return;
314	>	}
315	>	catch (Exception e) {
316	>	unexpectedException();
317	>	}
318	>	}
319	>	// if by chance we didn't ever time out, total time must be small
320	>	long elapsed = System.currentTimeMillis() - startTime;
321	>	assertTrue(elapsed < N);
322	>	}
323	>	finally {
324	>	joinPool(executor);
325	>	}
326		}
327
328	<	public void testExecuteRunnable () {
328	>
329	>	/**
330	>	* ThreadPoolExecutor using defaultThreadFactory has
331	>	* specified group, priority, daemon status, and name
332	>	*/
333	>	public void testDefaultThreadFactory() {
334	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
335	>	Runnable r = new Runnable() {
336	>	public void run() {
337	>	try {
338	>	Thread current = Thread.currentThread();
339	>	threadAssertTrue(!current.isDaemon());
340	>	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
341	>	ThreadGroup g = current.getThreadGroup();
342	>	SecurityManager s = System.getSecurityManager();
343	>	if (s != null)
344	>	threadAssertTrue(g == s.getThreadGroup());
345	>	else
346	>	threadAssertTrue(g == egroup);
347	>	String name = current.getName();
348	>	threadAssertTrue(name.endsWith("thread-1"));
349	>	} catch (SecurityException ok) {
350	>	// Also pass if not allowed to change setting
351	>	}
352	>	}
353	>	};
354	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
355	>
356	>	e.execute(r);
357		try {
358	<	Executor e = new DirectExecutor();
359	<	Task task = new Task();
358	>	e.shutdown();
359	>	} catch (SecurityException ok) {
360	>	}
361
362	<	assertFalse("task should not be complete", task.isCompleted());
362	>	try {
363	>	Thread.sleep(SHORT_DELAY_MS);
364	>	} catch (Exception eX) {
365	>	unexpectedException();
366	>	} finally {
367	>	joinPool(e);
368	>	}
369	>	}
370
371	<	Future<String> future = Executors.execute(e, task, TEST_STRING);
372	<	String result = future.get();
371	>	/**
372	>	* ThreadPoolExecutor using privilegedThreadFactory has
373	>	* specified group, priority, daemon status, name,
374	>	* access control context and context class loader
375	>	*/
376	>	public void testPrivilegedThreadFactory() {
377	>	Policy savedPolicy = null;
378	>	try {
379	>	savedPolicy = Policy.getPolicy();
380	>	AdjustablePolicy policy = new AdjustablePolicy();
381	>	policy.addPermission(new RuntimePermission("getContextClassLoader"));
382	>	policy.addPermission(new RuntimePermission("setContextClassLoader"));
383	>	Policy.setPolicy(policy);
384	>	} catch (AccessControlException ok) {
385	>	return;
386	>	}
387	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
388	>	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
389	>	final AccessControlContext thisacc = AccessController.getContext();
390	>	Runnable r = new Runnable() {
391	>	public void run() {
392	>	try {
393	>	Thread current = Thread.currentThread();
394	>	threadAssertTrue(!current.isDaemon());
395	>	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
396	>	ThreadGroup g = current.getThreadGroup();
397	>	SecurityManager s = System.getSecurityManager();
398	>	if (s != null)
399	>	threadAssertTrue(g == s.getThreadGroup());
400	>	else
401	>	threadAssertTrue(g == egroup);
402	>	String name = current.getName();
403	>	threadAssertTrue(name.endsWith("thread-1"));
404	>	threadAssertTrue(thisccl == current.getContextClassLoader());
405	>	threadAssertTrue(thisacc.equals(AccessController.getContext()));
406	>	} catch (SecurityException ok) {
407	>	// Also pass if not allowed to change settings
408	>	}
409	>	}
410	>	};
411	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
412
413	<	assertTrue("task should be complete", task.isCompleted());
414	<	assertSame("should return test string", TEST_STRING, result);
413	>	Policy.setPolicy(savedPolicy);
414	>	e.execute(r);
415	>	try {
416	>	e.shutdown();
417	>	} catch (SecurityException ok) {
418		}
419	<	catch (ExecutionException ex) {
420	<	fail("Unexpected exception");
419	>	try {
420	>	Thread.sleep(SHORT_DELAY_MS);
421	>	} catch (Exception ex) {
422	>	unexpectedException();
423	>	} finally {
424	>	joinPool(e);
425		}
426	<	catch (InterruptedException ex) {
427	<	fail("Unexpected exception");
426	>
427	>	}
428	>
429	>	void checkCCL() {
430	>	SecurityManager sm = System.getSecurityManager();
431	>	if (sm != null) {
432	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
433	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
434		}
435		}
436
437	<	public void testInvokeRunnable () {
437	>	class CheckCCL implements Callable<Object> {
438	>	public Object call() {
439	>	checkCCL();
440	>	return null;
441	>	}
442	>	}
443	>
444	>
445	>	/**
446	>	* Without class loader permissions, creating
447	>	* privilegedCallableUsingCurrentClassLoader throws ACE
448	>	*/
449	>	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
450	>	Policy savedPolicy = null;
451		try {
452	<	Executor e = new DirectExecutor();
453	<	Task task = new Task();
452	>	savedPolicy = Policy.getPolicy();
453	>	AdjustablePolicy policy = new AdjustablePolicy();
454	>	Policy.setPolicy(policy);
455	>	} catch (AccessControlException ok) {
456	>	return;
457	>	}
458
459	<	assertFalse("task should not be complete", task.isCompleted());
459	>	// Check if program still has too many permissions to run test
460	>	try {
461	>	checkCCL();
462	>	// too many privileges to test; so return
463	>	Policy.setPolicy(savedPolicy);
464	>	return;
465	>	} catch (AccessControlException ok) {
466	>	}
467
468	<	Executors.invoke(e, task);
468	>	try {
469	>	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
470	>	shouldThrow();
471	>	} catch (AccessControlException success) {
472	>	} catch (Exception ex) {
473	>	unexpectedException();
474	>	}
475	>	finally {
476	>	Policy.setPolicy(savedPolicy);
477	>	}
478	>	}
479
480	<	assertTrue("task should be complete", task.isCompleted());
480	>	/**
481	>	* With class loader permissions, calling
482	>	* privilegedCallableUsingCurrentClassLoader does not throw ACE
483	>	*/
484	>	public void testprivilegedCallableUsingCCLWithPrivs() {
485	>	Policy savedPolicy = null;
486	>	try {
487	>	savedPolicy = Policy.getPolicy();
488	>	AdjustablePolicy policy = new AdjustablePolicy();
489	>	policy.addPermission(new RuntimePermission("getContextClassLoader"));
490	>	policy.addPermission(new RuntimePermission("setContextClassLoader"));
491	>	Policy.setPolicy(policy);
492	>	} catch (AccessControlException ok) {
493	>	return;
494		}
495	<	catch (ExecutionException ex) {
496	<	fail("Unexpected exception");
495	>
496	>	try {
497	>	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
498	>	task.call();
499	>	} catch (Exception ex) {
500	>	unexpectedException();
501		}
502	<	catch (InterruptedException ex) {
503	<	fail("Unexpected exception");
502	>	finally {
503	>	Policy.setPolicy(savedPolicy);
504		}
505		}
506
507	<	public void testExecuteCallable () {
507	>	/**
508	>	* Without permissions, calling privilegedCallable throws ACE
509	>	*/
510	>	public void testprivilegedCallableWithNoPrivs() {
511	>	Callable task;
512	>	Policy savedPolicy = null;
513	>	AdjustablePolicy policy = null;
514	>	AccessControlContext noprivAcc = null;
515	>	try {
516	>	savedPolicy = Policy.getPolicy();
517	>	policy = new AdjustablePolicy();
518	>	Policy.setPolicy(policy);
519	>	noprivAcc = AccessController.getContext();
520	>	task = Executors.privilegedCallable(new CheckCCL());
521	>	Policy.setPolicy(savedPolicy);
522	>	} catch (AccessControlException ok) {
523	>	return; // program has too few permissions to set up test
524	>	}
525	>
526	>	// Make sure that program doesn't have too many permissions
527		try {
528	<	Executor e = new DirectExecutor();
529	<	Future<String> future = Executors.execute(e, new StringTask());
530	<	String result = future.get();
528	>	AccessController.doPrivileged(new PrivilegedAction() {
529	>	public Object run() {
530	>	checkCCL();
531	>	return null;
532	>	}}, noprivAcc);
533	>	// too many permssions; skip test
534	>	return;
535	>	} catch (AccessControlException ok) {
536	>	}
537
538	<	assertSame("should return test string", TEST_STRING, result);
538	>	try {
539	>	task.call();
540	>	shouldThrow();
541	>	} catch (AccessControlException success) {
542	>	} catch (Exception ex) {
543	>	unexpectedException();
544		}
545	<	catch (ExecutionException ex) {
546	<	fail("Unexpected exception");
545	>	}
546	>
547	>	/**
548	>	* With permissions, calling privilegedCallable succeeds
549	>	*/
550	>	public void testprivilegedCallableWithPrivs() {
551	>	Policy savedPolicy = null;
552	>	try {
553	>	savedPolicy = Policy.getPolicy();
554	>	AdjustablePolicy policy = new AdjustablePolicy();
555	>	policy.addPermission(new RuntimePermission("getContextClassLoader"));
556	>	policy.addPermission(new RuntimePermission("setContextClassLoader"));
557	>	Policy.setPolicy(policy);
558	>	} catch (AccessControlException ok) {
559	>	return;
560		}
561	<	catch (InterruptedException ex) {
562	<	fail("Unexpected exception");
561	>
562	>	Callable task = Executors.privilegedCallable(new CheckCCL());
563	>	try {
564	>	task.call();
565	>	} catch (Exception ex) {
566	>	unexpectedException();
567	>	} finally {
568	>	Policy.setPolicy(savedPolicy);
569		}
570		}
571
572	<	public void testInvokeCallable () {
572	>	/**
573	>	* callable(Runnable) returns null when called
574	>	*/
575	>	public void testCallable1() {
576		try {
577	<	Executor e = new DirectExecutor();
578	<	String result = Executors.invoke(e, new StringTask());
577	>	Callable c = Executors.callable(new NoOpRunnable());
578	>	assertNull(c.call());
579	>	} catch (Exception ex) {
580	>	unexpectedException();
581	>	}
582	>
583	>	}
584
585	<	assertSame("should return test string", TEST_STRING, result);
585	>	/**
586	>	* callable(Runnable, result) returns result when called
587	>	*/
588	>	public void testCallable2() {
589	>	try {
590	>	Callable c = Executors.callable(new NoOpRunnable(), one);
591	>	assertEquals(one, c.call());
592	>	} catch (Exception ex) {
593	>	unexpectedException();
594		}
595	<	catch (ExecutionException ex) {
596	<	fail("Unexpected exception" );
595	>	}
596	>
597	>	/**
598	>	* callable(PrivilegedAction) returns its result when called
599	>	*/
600	>	public void testCallable3() {
601	>	try {
602	>	Callable c = Executors.callable(new PrivilegedAction() {
603	>	public Object run() { return one; }});
604	>	assertEquals(one, c.call());
605	>	} catch (Exception ex) {
606	>	unexpectedException();
607		}
608	<	catch (InterruptedException ex) {
609	<	fail("Unexpected exception");
608	>	}
609	>
610	>	/**
611	>	* callable(PrivilegedExceptionAction) returns its result when called
612	>	*/
613	>	public void testCallable4() {
614	>	try {
615	>	Callable c = Executors.callable(new PrivilegedExceptionAction() {
616	>	public Object run() { return one; }});
617	>	assertEquals(one, c.call());
618	>	} catch (Exception ex) {
619	>	unexpectedException();
620		}
621		}
622
294	–	private static final String TEST_STRING = "a test string";
623
624	<	private static class Task implements Runnable {
625	<	public void run() { completed = true; }
626	<	public boolean isCompleted() { return completed; }
627	<	public void reset() { completed = false; }
628	<	private boolean completed = false;
624	>	/**
625	>	* callable(null Runnable) throws NPE
626	>	*/
627	>	public void testCallableNPE1() {
628	>	try {
629	>	Runnable r = null;
630	>	Callable c = Executors.callable(r);
631	>	} catch (NullPointerException success) {
632	>	}
633	>	}
634	>
635	>	/**
636	>	* callable(null, result) throws NPE
637	>	*/
638	>	public void testCallableNPE2() {
639	>	try {
640	>	Runnable r = null;
641	>	Callable c = Executors.callable(r, one);
642	>	} catch (NullPointerException success) {
643	>	}
644		}
645
646	<	private static class StringTask implements Callable<String> {
647	<	public String call() { return TEST_STRING; }
646	>	/**
647	>	* callable(null PrivilegedAction) throws NPE
648	>	*/
649	>	public void testCallableNPE3() {
650	>	try {
651	>	PrivilegedAction r = null;
652	>	Callable c = Executors.callable(r);
653	>	} catch (NullPointerException success) {
654	>	}
655		}
656
657	<	static class DirectExecutor implements Executor {
658	<	public void execute(Runnable r) {
659	<	r.run();
657	>	/**
658	>	* callable(null PrivilegedExceptionAction) throws NPE
659	>	*/
660	>	public void testCallableNPE4() {
661	>	try {
662	>	PrivilegedExceptionAction r = null;
663	>	Callable c = Executors.callable(r);
664	>	} catch (NullPointerException success) {
665		}
666		}
667

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