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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 1.54 by jsr166, Sat Feb 1 18:52:17 2020 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
9	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10
11	<	import junit.framework.*;
12	<	import java.util.*;
13	<	import java.util.concurrent.*;
11	>	import java.security.AccessControlContext;
12	>	import java.security.AccessControlException;
13	>	import java.security.AccessController;
14	>	import java.security.PrivilegedAction;
15	>	import java.security.PrivilegedExceptionAction;
16	>	import java.util.ArrayList;
17	>	import java.util.List;
18	>	import java.util.concurrent.Callable;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.Future;
23	>	import java.util.concurrent.ScheduledExecutorService;
24	>	import java.util.concurrent.ThreadPoolExecutor;
25
26	<	public class ExecutorsTest extends TestCase{
27	<
26	>	import junit.framework.Test;
27	>	import junit.framework.TestSuite;
28	>
29	>	public class ExecutorsTest extends JSR166TestCase {
30		public static void main(String[] args) {
31	<	junit.textui.TestRunner.run (suite());
31	>	main(suite(), args);
32		}
18	–
19	–
33		public static Test suite() {
34	<	return new TestSuite(ExecutorsTest.class);
34	>	return new TestSuite(ExecutorsTest.class);
35		}
36
37	<	private static long SHORT_DELAY_MS = 100;
38	<	private static long MEDIUM_DELAY_MS = 1000;
39	<	private static long LONG_DELAY_MS = 10000;
40	<
41	<	class SleepRun implements Runnable {
42	<	public void run() {
43	<	try{
44	<	Thread.sleep(MEDIUM_DELAY_MS);
45	<	} catch(InterruptedException e){
33	<	fail("unexpected exception");
34	<	}
37	>	/**
38	>	* A newCachedThreadPool can execute runnables
39	>	*/
40	>	public void testNewCachedThreadPool1() {
41	>	final ExecutorService e = Executors.newCachedThreadPool();
42	>	try (PoolCleaner cleaner = cleaner(e)) {
43	>	e.execute(new NoOpRunnable());
44	>	e.execute(new NoOpRunnable());
45	>	e.execute(new NoOpRunnable());
46		}
47		}
37	–
48
49	<	class SleepCall implements Callable {
50	<	public Object call(){
51	<	try{
52	<	Thread.sleep(MEDIUM_DELAY_MS);
53	<	}catch(InterruptedException e){
54	<	fail("unexpected exception");
55	<	}
56	<	return Boolean.TRUE;
49	>	/**
50	>	* A newCachedThreadPool with given ThreadFactory can execute runnables
51	>	*/
52	>	public void testNewCachedThreadPool2() {
53	>	final ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
54	>	try (PoolCleaner cleaner = cleaner(e)) {
55	>	e.execute(new NoOpRunnable());
56	>	e.execute(new NoOpRunnable());
57	>	e.execute(new NoOpRunnable());
58		}
59		}
60
50	–
51	–
61		/**
62	<	*  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
62	>	* A newCachedThreadPool with null ThreadFactory throws NPE
63		*/
64	<	public void testExecute1(){
65	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
66	<	try{
67	<
68	<	for(int i = 0; i < 5; ++i){
64	<	Executors.execute(p, new SleepRun(), Boolean.TRUE);
65	<	}
66	<	fail("should throw");
67	<	} catch(RejectedExecutionException success){}
68	<	p.shutdownNow();
64	>	public void testNewCachedThreadPool3() {
65	>	try {
66	>	ExecutorService unused = Executors.newCachedThreadPool(null);
67	>	shouldThrow();
68	>	} catch (NullPointerException success) {}
69		}
70
71		/**
72	<	*  Test to verify execute(Executor, Callable) will throw
73	<	*  RejectedExecutionException Attempting to execute a callable on
74	<	*  a full ThreadPool will cause such an exception here, up to 5
75	<	*  runnables are attempted on a pool capable on handling one
76	<	*  until it throws an exception
77	<	*/
78	<	public void testExecute2(){
79	<	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();
72	>	* A new SingleThreadExecutor can execute runnables
73	>	*/
74	>	public void testNewSingleThreadExecutor1() {
75	>	final ExecutorService e = Executors.newSingleThreadExecutor();
76	>	try (PoolCleaner cleaner = cleaner(e)) {
77	>	e.execute(new NoOpRunnable());
78	>	e.execute(new NoOpRunnable());
79	>	e.execute(new NoOpRunnable());
80	>	}
81		}
82
89	–
83		/**
84	<	*  Test to verify invoke(Executor, Runnable) throws InterruptedException
85	<	*  A single use of invoke starts that will wait long enough
86	<	*  for the invoking thread to be interrupted
87	<	*/
88	<	public void testInvoke2(){
89	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
90	<	Thread t = new Thread(new Runnable() {
91	<	public void run(){
92	<	try{
100	<	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();
84	>	* A new SingleThreadExecutor with given ThreadFactory can execute runnables
85	>	*/
86	>	public void testNewSingleThreadExecutor2() {
87	>	final ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
88	>	try (PoolCleaner cleaner = cleaner(e)) {
89	>	e.execute(new NoOpRunnable());
90	>	e.execute(new NoOpRunnable());
91	>	e.execute(new NoOpRunnable());
92	>	}
93		}
94
95		/**
96	<	*  Test to verify invoke(Executor, Runnable) will throw
97	<	*  ExecutionException An ExecutionException occurs when the
98	<	*  underlying Runnable throws an exception, here the
99	<	*  DivideByZeroException will cause an ExecutionException
100	<	*/
101	<	public void testInvoke3(){
102	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
134	<	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();
96	>	* A new SingleThreadExecutor with null ThreadFactory throws NPE
97	>	*/
98	>	public void testNewSingleThreadExecutor3() {
99	>	try {
100	>	ExecutorService unused = Executors.newSingleThreadExecutor(null);
101	>	shouldThrow();
102	>	} catch (NullPointerException success) {}
103		}
104
105	+	/**
106	+	* A new SingleThreadExecutor cannot be casted to concrete implementation
107	+	*/
108	+	public void testCastNewSingleThreadExecutor() {
109	+	final ExecutorService e = Executors.newSingleThreadExecutor();
110	+	try (PoolCleaner cleaner = cleaner(e)) {
111	+	try {
112	+	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
113	+	shouldThrow();
114	+	} catch (ClassCastException success) {}
115	+	}
116	+	}
117
118	+	/**
119	+	* A new newFixedThreadPool can execute runnables
120	+	*/
121	+	public void testNewFixedThreadPool1() {
122	+	final ExecutorService e = Executors.newFixedThreadPool(2);
123	+	try (PoolCleaner cleaner = cleaner(e)) {
124	+	e.execute(new NoOpRunnable());
125	+	e.execute(new NoOpRunnable());
126	+	e.execute(new NoOpRunnable());
127	+	}
128	+	}
129
130		/**
131	<	*  Test to verify invoke(Executor, Callable) throws
132	<	*  InterruptedException A single use of invoke starts that will
133	<	*  wait long enough for the invoking thread to be interrupted
134	<	*/
135	<	public void testInvoke5(){
136	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
137	<
138	<	final Callable c = new Callable(){
139	<	public Object call(){
140	<	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	<	};
131	>	* A new newFixedThreadPool with given ThreadFactory can execute runnables
132	>	*/
133	>	public void testNewFixedThreadPool2() {
134	>	final ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
135	>	try (PoolCleaner cleaner = cleaner(e)) {
136	>	e.execute(new NoOpRunnable());
137	>	e.execute(new NoOpRunnable());
138	>	e.execute(new NoOpRunnable());
139	>	}
140	>	}
141
142	+	/**
143	+	* A new newFixedThreadPool with null ThreadFactory throws
144	+	* NullPointerException
145	+	*/
146	+	public void testNewFixedThreadPool3() {
147	+	try {
148	+	ExecutorService unused = Executors.newFixedThreadPool(2, null);
149	+	shouldThrow();
150	+	} catch (NullPointerException success) {}
151	+	}
152
153	<
154	<	Thread t = new Thread(new Runnable(){
155	<	public void run(){
156	<	try{
157	<	c.call();
158	<	}catch(Exception e){}
159	<	}
160	<	});
184	<	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();
153	>	/**
154	>	* A new newFixedThreadPool with 0 threads throws IllegalArgumentException
155	>	*/
156	>	public void testNewFixedThreadPool4() {
157	>	try {
158	>	ExecutorService unused = Executors.newFixedThreadPool(0);
159	>	shouldThrow();
160	>	} catch (IllegalArgumentException success) {}
161		}
162
163		/**
164	<	*  Test to verify invoke(Executor, Callable) will throw ExecutionException
165	<	*  An ExecutionException occurs when the underlying Runnable throws
166	<	*  an exception, here the DivideByZeroException will cause an ExecutionException
167	<	*/
168	<	public void testInvoke6(){
169	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
170	<
171	<	try{
172	<	Callable c = new Callable(){
206	<	public Object call(){
207	<	int i = 5/0;
208	<	return Boolean.TRUE;
209	<	}
210	<	};
211	<
212	<	for(int i =0; i < 5; i++){
213	<	Executors.invoke(p,c);
214	<	}
215	<
216	<	fail("should throw");
217	<	}catch(RejectedExecutionException e){}
218	<	catch(InterruptedException e2){}
219	<	catch(ExecutionException e3){}
220	<	p.shutdownNow();
164	>	* An unconfigurable newFixedThreadPool can execute runnables
165	>	*/
166	>	public void testUnconfigurableExecutorService() {
167	>	final ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
168	>	try (PoolCleaner cleaner = cleaner(e)) {
169	>	e.execute(new NoOpRunnable());
170	>	e.execute(new NoOpRunnable());
171	>	e.execute(new NoOpRunnable());
172	>	}
173		}
174
175	<	public void testExecuteRunnable () {
175	>	/**
176	>	* unconfigurableExecutorService(null) throws NPE
177	>	*/
178	>	public void testUnconfigurableExecutorServiceNPE() {
179		try {
180	<	Executor e = new DirectExecutor();
181	<	Task task = new Task();
182	<
183	<	assertFalse("task should not be complete", task.isCompleted());
180	>	ExecutorService unused =
181	>	Executors.unconfigurableExecutorService(null);
182	>	shouldThrow();
183	>	} catch (NullPointerException success) {}
184	>	}
185
186	<	Future<String> future = Executors.execute(e, task, TEST_STRING);
187	<	String result = future.get();
186	>	/**
187	>	* unconfigurableScheduledExecutorService(null) throws NPE
188	>	*/
189	>	public void testUnconfigurableScheduledExecutorServiceNPE() {
190	>	try {
191	>	ExecutorService unused =
192	>	Executors.unconfigurableScheduledExecutorService(null);
193	>	shouldThrow();
194	>	} catch (NullPointerException success) {}
195	>	}
196
197	<	assertTrue("task should be complete", task.isCompleted());
198	<	assertSame("should return test string", TEST_STRING, result);
197	>	/**
198	>	* a newSingleThreadScheduledExecutor successfully runs delayed task
199	>	*/
200	>	public void testNewSingleThreadScheduledExecutor() throws Exception {
201	>	final ScheduledExecutorService p = Executors.newSingleThreadScheduledExecutor();
202	>	try (PoolCleaner cleaner = cleaner(p)) {
203	>	final CountDownLatch proceed = new CountDownLatch(1);
204	>	final Runnable task = new CheckedRunnable() {
205	>	public void realRun() {
206	>	await(proceed);
207	>	}};
208	>	long startTime = System.nanoTime();
209	>	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
210	>	timeoutMillis(), MILLISECONDS);
211	>	assertFalse(f.isDone());
212	>	proceed.countDown();
213	>	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
214	>	assertSame(Boolean.TRUE, f.get());
215	>	assertTrue(f.isDone());
216	>	assertFalse(f.isCancelled());
217	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
218		}
219	<	catch (ExecutionException ex) {
220	<	fail("Unexpected exception");
219	>	}
220	>
221	>	/**
222	>	* a newScheduledThreadPool successfully runs delayed task
223	>	*/
224	>	public void testNewScheduledThreadPool() throws Exception {
225	>	final ScheduledExecutorService p = Executors.newScheduledThreadPool(2);
226	>	try (PoolCleaner cleaner = cleaner(p)) {
227	>	final CountDownLatch proceed = new CountDownLatch(1);
228	>	final Runnable task = new CheckedRunnable() {
229	>	public void realRun() {
230	>	await(proceed);
231	>	}};
232	>	long startTime = System.nanoTime();
233	>	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
234	>	timeoutMillis(), MILLISECONDS);
235	>	assertFalse(f.isDone());
236	>	proceed.countDown();
237	>	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
238	>	assertSame(Boolean.TRUE, f.get());
239	>	assertTrue(f.isDone());
240	>	assertFalse(f.isCancelled());
241	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
242		}
243	<	catch (InterruptedException ex) {
244	<	fail("Unexpected exception");
243	>	}
244	>
245	>	/**
246	>	* an unconfigurable newScheduledThreadPool successfully runs delayed task
247	>	*/
248	>	public void testUnconfigurableScheduledExecutorService() throws Exception {
249	>	final ScheduledExecutorService p =
250	>	Executors.unconfigurableScheduledExecutorService
251	>	(Executors.newScheduledThreadPool(2));
252	>	try (PoolCleaner cleaner = cleaner(p)) {
253	>	final CountDownLatch proceed = new CountDownLatch(1);
254	>	final Runnable task = new CheckedRunnable() {
255	>	public void realRun() {
256	>	await(proceed);
257	>	}};
258	>	long startTime = System.nanoTime();
259	>	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
260	>	timeoutMillis(), MILLISECONDS);
261	>	assertFalse(f.isDone());
262	>	proceed.countDown();
263	>	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
264	>	assertSame(Boolean.TRUE, f.get());
265	>	assertTrue(f.isDone());
266	>	assertFalse(f.isCancelled());
267	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
268		}
269		}
270
271	<	public void testInvokeRunnable () {
272	<	try {
273	<	Executor e = new DirectExecutor();
274	<	Task task = new Task();
271	>	/**
272	>	* Future.get on submitted tasks will time out if they compute too long.
273	>	*/
274	>	public void testTimedCallable() throws Exception {
275	>	final ExecutorService[] executors = {
276	>	Executors.newSingleThreadExecutor(),
277	>	Executors.newCachedThreadPool(),
278	>	Executors.newFixedThreadPool(2),
279	>	Executors.newScheduledThreadPool(2),
280	>	};
281	>
282	>	final CountDownLatch done = new CountDownLatch(1);
283	>
284	>	final Runnable sleeper = new CheckedRunnable() {
285	>	public void realRun() throws InterruptedException {
286	>	done.await(LONG_DELAY_MS, MILLISECONDS);
287	>	}};
288	>
289	>	List<Thread> threads = new ArrayList<>();
290	>	for (final ExecutorService executor : executors) {
291	>	threads.add(newStartedThread(new CheckedRunnable() {
292	>	public void realRun() {
293	>	Future future = executor.submit(sleeper);
294	>	assertFutureTimesOut(future);
295	>	}}));
296	>	}
297	>	for (Thread thread : threads)
298	>	awaitTermination(thread);
299	>	done.countDown();
300	>	for (ExecutorService executor : executors)
301	>	joinPool(executor);
302	>	}
303
304	<	assertFalse("task should not be complete", task.isCompleted());
304	>	/**
305	>	* ThreadPoolExecutor using defaultThreadFactory has
306	>	* specified group, priority, daemon status, and name
307	>	*/
308	>	public void testDefaultThreadFactory() throws Exception {
309	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
310	>	final CountDownLatch done = new CountDownLatch(1);
311	>	Runnable r = new CheckedRunnable() {
312	>	public void realRun() {
313	>	try {
314	>	Thread current = Thread.currentThread();
315	>	assertFalse(current.isDaemon());
316	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
317	>	SecurityManager s = System.getSecurityManager();
318	>	assertSame(current.getThreadGroup(),
319	>	(s == null) ? egroup : s.getThreadGroup());
320	>	assertTrue(current.getName().endsWith("thread-1"));
321	>	} catch (SecurityException ok) {
322	>	// Also pass if not allowed to change setting
323	>	}
324	>	done.countDown();
325	>	}};
326	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
327	>	try (PoolCleaner cleaner = cleaner(e)) {
328	>	e.execute(r);
329	>	await(done);
330	>	}
331	>	}
332
333	<	Executors.invoke(e, task);
333	>	/**
334	>	* ThreadPoolExecutor using privilegedThreadFactory has
335	>	* specified group, priority, daemon status, name,
336	>	* access control context and context class loader
337	>	*/
338	>	public void testPrivilegedThreadFactory() throws Exception {
339	>	final CountDownLatch done = new CountDownLatch(1);
340	>	Runnable r = new CheckedRunnable() {
341	>	public void realRun() throws Exception {
342	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
343	>	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
344	>	final AccessControlContext thisacc = AccessController.getContext();
345	>	Runnable r = new CheckedRunnable() {
346	>	public void realRun() {
347	>	Thread current = Thread.currentThread();
348	>	assertFalse(current.isDaemon());
349	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
350	>	SecurityManager s = System.getSecurityManager();
351	>	assertSame(current.getThreadGroup(),
352	>	(s == null) ? egroup : s.getThreadGroup());
353	>	assertTrue(current.getName().endsWith("thread-1"));
354	>	assertSame(thisccl, current.getContextClassLoader());
355	>	assertEquals(thisacc, AccessController.getContext());
356	>	done.countDown();
357	>	}};
358	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
359	>	try (PoolCleaner cleaner = cleaner(e)) {
360	>	e.execute(r);
361	>	await(done);
362	>	}
363	>	}};
364
365	<	assertTrue("task should be complete", task.isCompleted());
365	>	runWithPermissions(r,
366	>	new RuntimePermission("getClassLoader"),
367	>	new RuntimePermission("setContextClassLoader"),
368	>	new RuntimePermission("modifyThread"));
369	>	}
370	>
371	>	boolean haveCCLPermissions() {
372	>	SecurityManager sm = System.getSecurityManager();
373	>	if (sm != null) {
374	>	try {
375	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
376	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
377	>	} catch (AccessControlException e) {
378	>	return false;
379	>	}
380		}
381	<	catch (ExecutionException ex) {
382	<	fail("Unexpected exception");
381	>	return true;
382	>	}
383	>
384	>	void checkCCL() {
385	>	SecurityManager sm = System.getSecurityManager();
386	>	if (sm != null) {
387	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
388	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
389		}
390	<	catch (InterruptedException ex) {
391	<	fail("Unexpected exception");
390	>	}
391	>
392	>	class CheckCCL implements Callable<Object> {
393	>	public Object call() {
394	>	checkCCL();
395	>	return null;
396		}
397		}
398
399	<	public void testExecuteCallable () {
400	<	try {
401	<	Executor e = new DirectExecutor();
402	<	Future<String> future = Executors.execute(e, new StringTask());
403	<	String result = future.get();
399	>	/**
400	>	* Without class loader permissions, creating
401	>	* privilegedCallableUsingCurrentClassLoader throws ACE
402	>	*/
403	>	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
404	>	Runnable r = new CheckedRunnable() {
405	>	public void realRun() throws Exception {
406	>	if (System.getSecurityManager() == null)
407	>	return;
408	>	try {
409	>	Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
410	>	shouldThrow();
411	>	} catch (AccessControlException success) {}
412	>	}};
413
414	<	assertSame("should return test string", TEST_STRING, result);
415	<	}
416	<	catch (ExecutionException ex) {
417	<	fail("Unexpected exception");
418	<	}
419	<	catch (InterruptedException ex) {
420	<	fail("Unexpected exception");
421	<	}
414	>	runWithoutPermissions(r);
415	>	}
416	>
417	>	/**
418	>	* With class loader permissions, calling
419	>	* privilegedCallableUsingCurrentClassLoader does not throw ACE
420	>	*/
421	>	public void testPrivilegedCallableUsingCCLWithPrivs() throws Exception {
422	>	Runnable r = new CheckedRunnable() {
423	>	public void realRun() throws Exception {
424	>	Executors.privilegedCallableUsingCurrentClassLoader
425	>	(new NoOpCallable())
426	>	.call();
427	>	}};
428	>
429	>	runWithPermissions(r,
430	>	new RuntimePermission("getClassLoader"),
431	>	new RuntimePermission("setContextClassLoader"));
432		}
433
434	<	public void testInvokeCallable () {
434	>	/**
435	>	* Without permissions, calling privilegedCallable throws ACE
436	>	*/
437	>	public void testPrivilegedCallableWithNoPrivs() throws Exception {
438	>	// Avoid classloader-related SecurityExceptions in swingui.TestRunner
439	>	Executors.privilegedCallable(new CheckCCL());
440	>
441	>	Runnable r = new CheckedRunnable() {
442	>	public void realRun() throws Exception {
443	>	if (System.getSecurityManager() == null)
444	>	return;
445	>	Callable task = Executors.privilegedCallable(new CheckCCL());
446	>	try {
447	>	task.call();
448	>	shouldThrow();
449	>	} catch (AccessControlException success) {}
450	>	}};
451	>
452	>	runWithoutPermissions(r);
453	>
454	>	// It seems rather difficult to test that the
455	>	// AccessControlContext of the privilegedCallable is used
456	>	// instead of its caller.  Below is a failed attempt to do
457	>	// that, which does not work because the AccessController
458	>	// cannot capture the internal state of the current Policy.
459	>	// It would be much more work to differentiate based on,
460	>	// e.g. CodeSource.
461	>
462	>	//         final AccessControlContext[] noprivAcc = new AccessControlContext[1];
463	>	//         final Callable[] task = new Callable[1];
464	>
465	>	//         runWithPermissions
466	>	//             (new CheckedRunnable() {
467	>	//                 public void realRun() {
468	>	//                     if (System.getSecurityManager() == null)
469	>	//                         return;
470	>	//                     noprivAcc[0] = AccessController.getContext();
471	>	//                     task[0] = Executors.privilegedCallable(new CheckCCL());
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	>
482	>	//         runWithPermissions
483	>	//             (new CheckedRunnable() {
484	>	//                 public void realRun() throws Exception {
485	>	//                     if (System.getSecurityManager() == null)
486	>	//                         return;
487	>	//                     // Verify that we have an underprivileged ACC
488	>	//                     try {
489	>	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
490	>	//                                                           public Void run() {
491	>	//                                                               checkCCL();
492	>	//                                                               return null;
493	>	//                                                           }}, noprivAcc[0]);
494	>	//                         shouldThrow();
495	>	//                     } catch (AccessControlException success) {}
496	>
497	>	//                     try {
498	>	//                         task[0].call();
499	>	//                         shouldThrow();
500	>	//                     } catch (AccessControlException success) {}
501	>	//                 }},
502	>	//              new RuntimePermission("getClassLoader"),
503	>	//              new RuntimePermission("setContextClassLoader"));
504	>	}
505	>
506	>	/**
507	>	* With permissions, calling privilegedCallable succeeds
508	>	*/
509	>	public void testPrivilegedCallableWithPrivs() throws Exception {
510	>	Runnable r = new CheckedRunnable() {
511	>	public void realRun() throws Exception {
512	>	Executors.privilegedCallable(new CheckCCL()).call();
513	>	}};
514	>
515	>	runWithPermissions(r,
516	>	new RuntimePermission("getClassLoader"),
517	>	new RuntimePermission("setContextClassLoader"));
518	>	}
519	>
520	>	/**
521	>	* callable(Runnable) returns null when called
522	>	*/
523	>	public void testCallable1() throws Exception {
524	>	Callable c = Executors.callable(new NoOpRunnable());
525	>	assertNull(c.call());
526	>	}
527	>
528	>	/**
529	>	* callable(Runnable, result) returns result when called
530	>	*/
531	>	public void testCallable2() throws Exception {
532	>	Callable c = Executors.callable(new NoOpRunnable(), one);
533	>	assertSame(one, c.call());
534	>	}
535	>
536	>	/**
537	>	* callable(PrivilegedAction) returns its result when called
538	>	*/
539	>	public void testCallable3() throws Exception {
540	>	Callable c = Executors.callable(new PrivilegedAction() {
541	>	public Object run() { return one; }});
542	>	assertSame(one, c.call());
543	>	}
544	>
545	>	/**
546	>	* callable(PrivilegedExceptionAction) returns its result when called
547	>	*/
548	>	public void testCallable4() throws Exception {
549	>	Callable c = Executors.callable(new PrivilegedExceptionAction() {
550	>	public Object run() { return one; }});
551	>	assertSame(one, c.call());
552	>	}
553	>
554	>	/**
555	>	* callable(null Runnable) throws NPE
556	>	*/
557	>	public void testCallableNPE1() {
558		try {
559	<	Executor e = new DirectExecutor();
560	<	String result = Executors.invoke(e, new StringTask());
559	>	Callable unused = Executors.callable((Runnable) null);
560	>	shouldThrow();
561	>	} catch (NullPointerException success) {}
562	>	}
563
564	<	assertSame("should return test string", TEST_STRING, result);
565	<	}
566	<	catch (ExecutionException ex) {
567	<	fail("Unexpected exception" );
568	<	}
569	<	catch (InterruptedException ex) {
570	<	fail("Unexpected exception");
571	<	}
564	>	/**
565	>	* callable(null, result) throws NPE
566	>	*/
567	>	public void testCallableNPE2() {
568	>	try {
569	>	Callable unused = Executors.callable((Runnable) null, one);
570	>	shouldThrow();
571	>	} catch (NullPointerException success) {}
572		}
573
574	<	private static final String TEST_STRING = "a test string";
574	>	/**
575	>	* callable(null PrivilegedAction) throws NPE
576	>	*/
577	>	public void testCallableNPE3() {
578	>	try {
579	>	Callable unused = Executors.callable((PrivilegedAction) null);
580	>	shouldThrow();
581	>	} catch (NullPointerException success) {}
582	>	}
583
584	<	private static class Task implements Runnable {
585	<	public void run() { completed = true; }
586	<	public boolean isCompleted() { return completed; }
587	<	public void reset() { completed = false; }
588	<	private boolean completed = false;
584	>	/**
585	>	* callable(null PrivilegedExceptionAction) throws NPE
586	>	*/
587	>	public void testCallableNPE4() {
588	>	try {
589	>	Callable unused = Executors.callable((PrivilegedExceptionAction) null);
590	>	shouldThrow();
591	>	} catch (NullPointerException success) {}
592		}
593
594	<	private static class StringTask implements Callable<String> {
595	<	public String call() { return TEST_STRING; }
594	>	/**
595	>	* callable(runnable, x).toString() contains toString of wrapped task
596	>	*/
597	>	public void testCallable_withResult_toString() {
598	>	if (testImplementationDetails) {
599	>	Runnable r = () -> {};
600	>	Callable<String> c = Executors.callable(r, "");
601	>	assertEquals(
602	>	identityString(c) + "[Wrapped task = " + r.toString() + "]",
603	>	c.toString());
604	>	}
605		}
606
607	<	static class DirectExecutor implements Executor {
608	<	public void execute(Runnable r) {
609	<	r.run();
607	>	/**
608	>	* callable(runnable).toString() contains toString of wrapped task
609	>	*/
610	>	public void testCallable_toString() {
611	>	if (testImplementationDetails) {
612	>	Runnable r = () -> {};
613	>	Callable<Object> c = Executors.callable(r);
614	>	assertEquals(
615	>	identityString(c) + "[Wrapped task = " + r.toString() + "]",
616	>	c.toString());
617		}
618		}
619
620	+	/**
621	+	* privilegedCallable(callable).toString() contains toString of wrapped task
622	+	*/
623	+	public void testPrivilegedCallable_toString() {
624	+	if (testImplementationDetails) {
625	+	Callable<String> c = () -> "";
626	+	Callable<String> priv = Executors.privilegedCallable(c);
627	+	assertEquals(
628	+	identityString(priv) + "[Wrapped task = " + c.toString() + "]",
629	+	priv.toString());
630	+	}
631	+	}
632
633	+	/**
634	+	* privilegedCallableUsingCurrentClassLoader(callable).toString()
635	+	* contains toString of wrapped task
636	+	*/
637	+	public void testPrivilegedCallableUsingCurrentClassLoader_toString() {
638	+	if (testImplementationDetails) {
639	+	Callable<String> c = () -> "";
640	+	Callable<String> priv = Executors.privilegedCallableUsingCurrentClassLoader(c);
641	+	assertEquals(
642	+	identityString(priv) + "[Wrapped task = " + c.toString() + "]",
643	+	priv.toString());
644	+	}
645	+	}
646		}

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