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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 1.52 by dl, Sat Feb 1 16:45:50 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.*;
14	<	import java.math.BigInteger;
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 JSR166TestCase{
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		}
19	–
20	–
33		public static Test suite() {
34	<	return new TestSuite(ExecutorsTest.class);
34	>	return new TestSuite(ExecutorsTest.class);
35		}
36
37		/**
38	<	*   execute(Executor, Runnable) will throw
39	<	*  RejectedExecutionException Attempting to execute a runnable on
40	<	*  a full ThreadPool will cause such an exception here, up to 5
41	<	*  runnables are attempted on a pool capable on handling one
42	<	*  until it throws an exception
43	<	*/
44	<	public void testExecute1(){
45	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
46	<	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);
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		}
48
49		/**
50	<	*   execute(Executor, Callable) will throw
51	<	*  RejectedExecutionException Attempting to execute a callable on
52	<	*  a full ThreadPool will cause such an exception here, up to 5
53	<	*  runnables are attempted on a pool capable on handling one
54	<	*  until it throws an exception
55	<	*/
56	<	public void testExecute2(){
57	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
58	<	try{
54	<	for(int i = 0; i < 5; ++i) {
55	<	Executors.execute(p, new SmallCallable());
56	<	}
57	<	fail("should throw");
58	<	}catch(RejectedExecutionException e){}
59	<	joinPool(p);
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
62	–
61		/**
62	<	*   invoke(Executor, Runnable) throws InterruptedException
63	<	*  A single use of invoke starts that will wait long enough
64	<	*  for the invoking thread to be interrupted
65	<	*/
66	<	public void testInvoke2(){
67	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
68	<	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");
95	<	}
96	<	joinPool(p);
62	>	* A newCachedThreadPool with null ThreadFactory throws NPE
63	>	*/
64	>	public void testNewCachedThreadPool3() {
65	>	try {
66	>	ExecutorService unused = Executors.newCachedThreadPool(null);
67	>	shouldThrow();
68	>	} catch (NullPointerException success) {}
69		}
70
71		/**
72	<	*   invoke(Executor, Runnable) will throw
73	<	*  ExecutionException An ExecutionException occurs when the
74	<	*  underlying Runnable throws an exception, here the
75	<	*  DivideByZeroException will cause an ExecutionException
76	<	*/
77	<	public void testInvoke3(){
78	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
79	<	try{
80	<	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);
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
83	+	/**
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	+	* 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	<	*   invoke(Executor, Callable) throws
107	<	*  InterruptedException A single use of invoke starts that will
108	<	*  wait long enough for the invoking thread to be interrupted
109	<	*/
110	<	public void testInvoke5(){
111	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
112	<
113	<	final Callable c = new Callable(){
114	<	public Object call(){
115	<	try{
116	<	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	<	};
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	<	Thread t = new Thread(new Runnable(){
132	<	public void run(){
133	<	try{
134	<	c.call();
135	<	}catch(Exception e){}
136	<	}
137	<	});
138	<	try{
139	<	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);
130	>	/**
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	<	*   invoke(Executor, Callable) will throw ExecutionException
144	<	*  An ExecutionException occurs when the underlying Runnable throws
145	<	*  an exception, here the DivideByZeroException will cause an ExecutionException
146	<	*/
147	<	public void testInvoke6(){
148	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
149	<
150	<	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);
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	<	public void testExecuteRunnable () {
153	>	/**
154	>	* A new newFixedThreadPool with 0 threads throws IllegalArgumentException
155	>	*/
156	>	public void testNewFixedThreadPool4() {
157		try {
158	<	Executor e = new DirectExecutor();
159	<	Task task = new Task();
158	>	ExecutorService unused = Executors.newFixedThreadPool(0);
159	>	shouldThrow();
160	>	} catch (IllegalArgumentException success) {}
161	>	}
162	>
163	>	/**
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	<	assertFalse("task should not be complete", task.isCompleted());
175	>	/**
176	>	* unconfigurableExecutorService(null) throws NPE
177	>	*/
178	>	public void testUnconfigurableExecutorServiceNPE() {
179	>	try {
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	<	assertFalse("task should not be complete", task.isCompleted());
282	>	final Runnable sleeper = new CheckedRunnable() {
283	>	public void realRun() throws InterruptedException {
284	>	try {
285	>	delay(LONG_DELAY_MS);
286	>	} catch(InterruptedException OK) {
287	>	}
288	>	}};
289
290	<	Executors.invoke(e, task);
290	>	List<Thread> threads = new ArrayList<>();
291	>	for (final ExecutorService executor : executors) {
292	>	threads.add(newStartedThread(new CheckedRunnable() {
293	>	public void realRun() {
294	>	Future future = executor.submit(sleeper);
295	>	assertFutureTimesOut(future);
296	>	}}));
297	>	}
298	>	for (Thread thread : threads)
299	>	awaitTermination(thread);
300	>	for (ExecutorService executor : executors)
301	>	executor.shutdownNow(); // assumes shutdownNow interrupts threads
302	>	for (ExecutorService executor : executors)
303	>	joinPool(executor);
304	>	}
305
306	<	assertTrue("task should be complete", task.isCompleted());
307	<	}
308	<	catch (ExecutionException ex) {
309	<	fail("Unexpected exception");
310	<	}
311	<	catch (InterruptedException ex) {
312	<	fail("Unexpected exception");
306	>	/**
307	>	* ThreadPoolExecutor using defaultThreadFactory has
308	>	* specified group, priority, daemon status, and name
309	>	*/
310	>	public void testDefaultThreadFactory() throws Exception {
311	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
312	>	final CountDownLatch done = new CountDownLatch(1);
313	>	Runnable r = new CheckedRunnable() {
314	>	public void realRun() {
315	>	try {
316	>	Thread current = Thread.currentThread();
317	>	assertFalse(current.isDaemon());
318	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
319	>	SecurityManager s = System.getSecurityManager();
320	>	assertSame(current.getThreadGroup(),
321	>	(s == null) ? egroup : s.getThreadGroup());
322	>	assertTrue(current.getName().endsWith("thread-1"));
323	>	} catch (SecurityException ok) {
324	>	// Also pass if not allowed to change setting
325	>	}
326	>	done.countDown();
327	>	}};
328	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
329	>	try (PoolCleaner cleaner = cleaner(e)) {
330	>	e.execute(r);
331	>	await(done);
332		}
333		}
334
335	<	public void testExecuteCallable () {
336	<	try {
337	<	Executor e = new DirectExecutor();
338	<	Future<String> future = Executors.execute(e, new StringTask());
339	<	String result = future.get();
335	>	/**
336	>	* ThreadPoolExecutor using privilegedThreadFactory has
337	>	* specified group, priority, daemon status, name,
338	>	* access control context and context class loader
339	>	*/
340	>	public void testPrivilegedThreadFactory() throws Exception {
341	>	final CountDownLatch done = new CountDownLatch(1);
342	>	Runnable r = new CheckedRunnable() {
343	>	public void realRun() throws Exception {
344	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
345	>	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
346	>	final AccessControlContext thisacc = AccessController.getContext();
347	>	Runnable r = new CheckedRunnable() {
348	>	public void realRun() {
349	>	Thread current = Thread.currentThread();
350	>	assertFalse(current.isDaemon());
351	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
352	>	SecurityManager s = System.getSecurityManager();
353	>	assertSame(current.getThreadGroup(),
354	>	(s == null) ? egroup : s.getThreadGroup());
355	>	assertTrue(current.getName().endsWith("thread-1"));
356	>	assertSame(thisccl, current.getContextClassLoader());
357	>	assertEquals(thisacc, AccessController.getContext());
358	>	done.countDown();
359	>	}};
360	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
361	>	try (PoolCleaner cleaner = cleaner(e)) {
362	>	e.execute(r);
363	>	await(done);
364	>	}
365	>	}};
366	>
367	>	runWithPermissions(r,
368	>	new RuntimePermission("getClassLoader"),
369	>	new RuntimePermission("setContextClassLoader"),
370	>	new RuntimePermission("modifyThread"));
371	>	}
372
373	<	assertSame("should return test string", TEST_STRING, result);
373	>	boolean haveCCLPermissions() {
374	>	SecurityManager sm = System.getSecurityManager();
375	>	if (sm != null) {
376	>	try {
377	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
378	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
379	>	} catch (AccessControlException e) {
380	>	return false;
381	>	}
382		}
383	<	catch (ExecutionException ex) {
384	<	fail("Unexpected exception");
383	>	return true;
384	>	}
385	>
386	>	void checkCCL() {
387	>	SecurityManager sm = System.getSecurityManager();
388	>	if (sm != null) {
389	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
390	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
391		}
392	<	catch (InterruptedException ex) {
393	<	fail("Unexpected exception");
392	>	}
393	>
394	>	class CheckCCL implements Callable<Object> {
395	>	public Object call() {
396	>	checkCCL();
397	>	return null;
398		}
399		}
400
401	<	public void testInvokeCallable () {
402	<	try {
403	<	Executor e = new DirectExecutor();
404	<	String result = Executors.invoke(e, new StringTask());
401	>	/**
402	>	* Without class loader permissions, creating
403	>	* privilegedCallableUsingCurrentClassLoader throws ACE
404	>	*/
405	>	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
406	>	Runnable r = new CheckedRunnable() {
407	>	public void realRun() throws Exception {
408	>	if (System.getSecurityManager() == null)
409	>	return;
410	>	try {
411	>	Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
412	>	shouldThrow();
413	>	} catch (AccessControlException success) {}
414	>	}};
415
416	<	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	<	}
416	>	runWithoutPermissions(r);
417		}
418
419	<	private static final String TEST_STRING = "a test string";
419	>	/**
420	>	* With class loader permissions, calling
421	>	* privilegedCallableUsingCurrentClassLoader does not throw ACE
422	>	*/
423	>	public void testPrivilegedCallableUsingCCLWithPrivs() throws Exception {
424	>	Runnable r = new CheckedRunnable() {
425	>	public void realRun() throws Exception {
426	>	Executors.privilegedCallableUsingCurrentClassLoader
427	>	(new NoOpCallable())
428	>	.call();
429	>	}};
430	>
431	>	runWithPermissions(r,
432	>	new RuntimePermission("getClassLoader"),
433	>	new RuntimePermission("setContextClassLoader"));
434	>	}
435
436	<	private static class Task implements Runnable {
437	<	public void run() { completed = true; }
438	<	public boolean isCompleted() { return completed; }
439	<	public void reset() { completed = false; }
440	<	private boolean completed = false;
436	>	/**
437	>	* Without permissions, calling privilegedCallable throws ACE
438	>	*/
439	>	public void testPrivilegedCallableWithNoPrivs() throws Exception {
440	>	// Avoid classloader-related SecurityExceptions in swingui.TestRunner
441	>	Executors.privilegedCallable(new CheckCCL());
442	>
443	>	Runnable r = new CheckedRunnable() {
444	>	public void realRun() throws Exception {
445	>	if (System.getSecurityManager() == null)
446	>	return;
447	>	Callable task = Executors.privilegedCallable(new CheckCCL());
448	>	try {
449	>	task.call();
450	>	shouldThrow();
451	>	} catch (AccessControlException success) {}
452	>	}};
453	>
454	>	runWithoutPermissions(r);
455	>
456	>	// It seems rather difficult to test that the
457	>	// AccessControlContext of the privilegedCallable is used
458	>	// instead of its caller.  Below is a failed attempt to do
459	>	// that, which does not work because the AccessController
460	>	// cannot capture the internal state of the current Policy.
461	>	// It would be much more work to differentiate based on,
462	>	// e.g. CodeSource.
463	>
464	>	//         final AccessControlContext[] noprivAcc = new AccessControlContext[1];
465	>	//         final Callable[] task = new Callable[1];
466	>
467	>	//         runWithPermissions
468	>	//             (new CheckedRunnable() {
469	>	//                 public void realRun() {
470	>	//                     if (System.getSecurityManager() == null)
471	>	//                         return;
472	>	//                     noprivAcc[0] = AccessController.getContext();
473	>	//                     task[0] = Executors.privilegedCallable(new CheckCCL());
474	>	//                     try {
475	>	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
476	>	//                                                           public Void run() {
477	>	//                                                               checkCCL();
478	>	//                                                               return null;
479	>	//                                                           }}, noprivAcc[0]);
480	>	//                         shouldThrow();
481	>	//                     } catch (AccessControlException success) {}
482	>	//                 }});
483	>
484	>	//         runWithPermissions
485	>	//             (new CheckedRunnable() {
486	>	//                 public void realRun() throws Exception {
487	>	//                     if (System.getSecurityManager() == null)
488	>	//                         return;
489	>	//                     // Verify that we have an underprivileged ACC
490	>	//                     try {
491	>	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
492	>	//                                                           public Void run() {
493	>	//                                                               checkCCL();
494	>	//                                                               return null;
495	>	//                                                           }}, noprivAcc[0]);
496	>	//                         shouldThrow();
497	>	//                     } catch (AccessControlException success) {}
498	>
499	>	//                     try {
500	>	//                         task[0].call();
501	>	//                         shouldThrow();
502	>	//                     } catch (AccessControlException success) {}
503	>	//                 }},
504	>	//              new RuntimePermission("getClassLoader"),
505	>	//              new RuntimePermission("setContextClassLoader"));
506	>	}
507	>
508	>	/**
509	>	* With permissions, calling privilegedCallable succeeds
510	>	*/
511	>	public void testPrivilegedCallableWithPrivs() throws Exception {
512	>	Runnable r = new CheckedRunnable() {
513	>	public void realRun() throws Exception {
514	>	Executors.privilegedCallable(new CheckCCL()).call();
515	>	}};
516	>
517	>	runWithPermissions(r,
518	>	new RuntimePermission("getClassLoader"),
519	>	new RuntimePermission("setContextClassLoader"));
520		}
521
522	<	private static class StringTask implements Callable<String> {
523	<	public String call() { return TEST_STRING; }
522	>	/**
523	>	* callable(Runnable) returns null when called
524	>	*/
525	>	public void testCallable1() throws Exception {
526	>	Callable c = Executors.callable(new NoOpRunnable());
527	>	assertNull(c.call());
528		}
529
530	<	static class DirectExecutor implements Executor {
531	<	public void execute(Runnable r) {
532	<	r.run();
533	<	}
530	>	/**
531	>	* callable(Runnable, result) returns result when called
532	>	*/
533	>	public void testCallable2() throws Exception {
534	>	Callable c = Executors.callable(new NoOpRunnable(), one);
535	>	assertSame(one, c.call());
536	>	}
537	>
538	>	/**
539	>	* callable(PrivilegedAction) returns its result when called
540	>	*/
541	>	public void testCallable3() throws Exception {
542	>	Callable c = Executors.callable(new PrivilegedAction() {
543	>	public Object run() { return one; }});
544	>	assertSame(one, c.call());
545		}
546
547		/**
548	<	* Check that timeouts from execute will time out if they compute
288	<	* too long.
548	>	* callable(PrivilegedExceptionAction) returns its result when called
549		*/
550	+	public void testCallable4() throws Exception {
551	+	Callable c = Executors.callable(new PrivilegedExceptionAction() {
552	+	public Object run() { return one; }});
553	+	assertSame(one, c.call());
554	+	}
555
556	<	public void testTimedCallable() {
557	<	int N = 10000;
558	<	ExecutorService executor = Executors.newSingleThreadExecutor();
559	<	List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
556	>	/**
557	>	* callable(null Runnable) throws NPE
558	>	*/
559	>	public void testCallableNPE1() {
560		try {
561	<	long startTime = System.currentTimeMillis();
562	<
563	<	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	<	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	<	fail("unexpected exception: " + e);
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	<	}
561	>	Callable unused = Executors.callable((Runnable) null);
562	>	shouldThrow();
563	>	} catch (NullPointerException success) {}
564		}
565
566	<
567	<	static class TimedCallable<T> implements Callable<T> {
568	<	private final Executor exec;
569	<	private final Callable<T> func;
570	<	private final long msecs;
571	<
572	<	TimedCallable(Executor exec, Callable<T> func, long msecs) {
573	<	this.exec = exec;
336	<	this.func = func;
337	<	this.msecs = msecs;
338	<	}
339	<
340	<	public T call() throws Exception {
341	<	Future<T> ftask = Executors.execute(exec, func);
342	<	try {
343	<	return ftask.get(msecs, TimeUnit.MILLISECONDS);
344	<	} finally {
345	<	ftask.cancel(true);
346	<	}
347	<	}
566	>	/**
567	>	* callable(null, result) throws NPE
568	>	*/
569	>	public void testCallableNPE2() {
570	>	try {
571	>	Callable unused = Executors.callable((Runnable) null, one);
572	>	shouldThrow();
573	>	} catch (NullPointerException success) {}
574		}
575
576	+	/**
577	+	* callable(null PrivilegedAction) throws NPE
578	+	*/
579	+	public void testCallableNPE3() {
580	+	try {
581	+	Callable unused = Executors.callable((PrivilegedAction) null);
582	+	shouldThrow();
583	+	} catch (NullPointerException success) {}
584	+	}
585
586	<	private static class Fib implements Callable<BigInteger> {
587	<	private final BigInteger n;
588	<	Fib(long n) {
589	<	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
590	<	this.n = BigInteger.valueOf(n);
591	<	}
592	<	public BigInteger call() {
593	<	BigInteger f1 = BigInteger.ONE;
594	<	BigInteger f2 = f1;
595	<	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
596	<	BigInteger t = f1.add(f2);
597	<	f1 = f2;
598	<	f2 = t;
599	<	}
600	<	return f1;
586	>	/**
587	>	* callable(null PrivilegedExceptionAction) throws NPE
588	>	*/
589	>	public void testCallableNPE4() {
590	>	try {
591	>	Callable unused = Executors.callable((PrivilegedExceptionAction) null);
592	>	shouldThrow();
593	>	} catch (NullPointerException success) {}
594	>	}
595	>
596	>	/**
597	>	* callable(runnable, x).toString() contains toString of wrapped task
598	>	*/
599	>	public void testCallable_withResult_toString() {
600	>	if (testImplementationDetails) {
601	>	Runnable r = () -> {};
602	>	Callable<String> c = Executors.callable(r, "");
603	>	assertEquals(
604	>	identityString(c) + "[Wrapped task = " + r.toString() + "]",
605	>	c.toString());
606		}
607	<	};
607	>	}
608
609	+	/**
610	+	* callable(runnable).toString() contains toString of wrapped task
611	+	*/
612	+	public void testCallable_toString() {
613	+	if (testImplementationDetails) {
614	+	Runnable r = () -> {};
615	+	Callable<Object> c = Executors.callable(r);
616	+	assertEquals(
617	+	identityString(c) + "[Wrapped task = " + r.toString() + "]",
618	+	c.toString());
619	+	}
620	+	}
621
622	+	/**
623	+	* privilegedCallable(callable).toString() contains toString of wrapped task
624	+	*/
625	+	public void testPrivilegedCallable_toString() {
626	+	if (testImplementationDetails) {
627	+	Callable<String> c = () -> "";
628	+	Callable<String> priv = Executors.privilegedCallable(c);
629	+	assertEquals(
630	+	identityString(priv) + "[Wrapped task = " + c.toString() + "]",
631	+	priv.toString());
632	+	}
633	+	}
634
635	+	/**
636	+	* privilegedCallableUsingCurrentClassLoader(callable).toString()
637	+	* contains toString of wrapped task
638	+	*/
639	+	public void testPrivilegedCallableUsingCurrentClassLoader_toString() {
640	+	if (testImplementationDetails) {
641	+	Callable<String> c = () -> "";
642	+	Callable<String> priv = Executors.privilegedCallableUsingCurrentClassLoader(c);
643	+	assertEquals(
644	+	identityString(priv) + "[Wrapped task = " + c.toString() + "]",
645	+	priv.toString());
646	+	}
647	+	}
648		}

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