test/tck/ExecutorsTest.java

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/licenses/publicdomain
 * Other contributors include Andrew Wright, Jeffrey Hayes,
 * Pat Fisher, Mike Judd.
 */


import junit.framework.*;
import java.util.*;
import java.util.concurrent.*;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import java.math.BigInteger;
import java.security.*;

public class ExecutorsTest extends JSR166TestCase {
    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());
    }
    public static Test suite() {
        return new TestSuite(ExecutorsTest.class);
    }

    /**
     * A newCachedThreadPool can execute runnables
     */
    public void testNewCachedThreadPool1() {
        ExecutorService e = Executors.newCachedThreadPool();
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        joinPool(e);
    }

    /**
     * A newCachedThreadPool with given ThreadFactory can execute runnables
     */
    public void testNewCachedThreadPool2() {
        ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        joinPool(e);
    }

    /**
     * A newCachedThreadPool with null ThreadFactory throws NPE
     */
    public void testNewCachedThreadPool3() {
        try {
            ExecutorService e = Executors.newCachedThreadPool(null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }


    /**
     * A new SingleThreadExecutor can execute runnables
     */
    public void testNewSingleThreadExecutor1() {
        ExecutorService e = Executors.newSingleThreadExecutor();
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        joinPool(e);
    }

    /**
     * A new SingleThreadExecutor with given ThreadFactory can execute runnables
     */
    public void testNewSingleThreadExecutor2() {
        ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        joinPool(e);
    }

    /**
     * A new SingleThreadExecutor with null ThreadFactory throws NPE
     */
    public void testNewSingleThreadExecutor3() {
        try {
            ExecutorService e = Executors.newSingleThreadExecutor(null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * A new SingleThreadExecutor cannot be casted to concrete implementation
     */
    public void testCastNewSingleThreadExecutor() {
        ExecutorService e = Executors.newSingleThreadExecutor();
        try {
            ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
            shouldThrow();
        } catch (ClassCastException success) {
        } finally {
            joinPool(e);
        }
    }


    /**
     * A new newFixedThreadPool can execute runnables
     */
    public void testNewFixedThreadPool1() {
        ExecutorService e = Executors.newFixedThreadPool(2);
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        joinPool(e);
    }

    /**
     * A new newFixedThreadPool with given ThreadFactory can execute runnables
     */
    public void testNewFixedThreadPool2() {
        ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        joinPool(e);
    }

    /**
     * A new newFixedThreadPool with null ThreadFactory throws NPE
     */
    public void testNewFixedThreadPool3() {
        try {
            ExecutorService e = Executors.newFixedThreadPool(2, null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * A new newFixedThreadPool with 0 threads throws IAE
     */
    public void testNewFixedThreadPool4() {
        try {
            ExecutorService e = Executors.newFixedThreadPool(0);
            shouldThrow();
        } catch (IllegalArgumentException success) {}
    }


    /**
     * An unconfigurable newFixedThreadPool can execute runnables
     */
    public void testunconfigurableExecutorService() {
        ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        e.execute(new NoOpRunnable());
        joinPool(e);
    }

    /**
     * unconfigurableExecutorService(null) throws NPE
     */
    public void testunconfigurableExecutorServiceNPE() {
        try {
            ExecutorService e = Executors.unconfigurableExecutorService(null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * unconfigurableScheduledExecutorService(null) throws NPE
     */
    public void testunconfigurableScheduledExecutorServiceNPE() {
        try {
            ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }


    /**
     * a newSingleThreadScheduledExecutor successfully runs delayed task
     */
    public void testNewSingleThreadScheduledExecutor() throws Exception {
        TrackedCallable callable = new TrackedCallable();
        ScheduledExecutorService p1 = Executors.newSingleThreadScheduledExecutor();
        Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
        assertFalse(callable.done);
        Thread.sleep(MEDIUM_DELAY_MS);
        assertTrue(callable.done);
        assertEquals(Boolean.TRUE, f.get());
        joinPool(p1);
    }

    /**
     * a newScheduledThreadPool successfully runs delayed task
     */
    public void testnewScheduledThreadPool() throws Exception {
        TrackedCallable callable = new TrackedCallable();
        ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2);
        Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
        assertFalse(callable.done);
        Thread.sleep(MEDIUM_DELAY_MS);
        assertTrue(callable.done);
        assertEquals(Boolean.TRUE, f.get());
        joinPool(p1);
    }

    /**
     * an unconfigurable newScheduledThreadPool successfully runs delayed task
     */
    public void testunconfigurableScheduledExecutorService() throws Exception {
        TrackedCallable callable = new TrackedCallable();
        ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2));
        Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
        assertFalse(callable.done);
        Thread.sleep(MEDIUM_DELAY_MS);
        assertTrue(callable.done);
        assertEquals(Boolean.TRUE, f.get());
        joinPool(p1);
    }

    /**
     *  Future.get on submitted tasks will time out if they compute too long.
     */
    public void testTimedCallable() throws Exception {
        final Runnable sleeper =
            new RunnableShouldThrow(InterruptedException.class) {
                public void realRun() throws InterruptedException {
                    Thread.sleep(LONG_DELAY_MS);
                }};
        for (ExecutorService executor :
                 new ExecutorService[] {
                     Executors.newSingleThreadExecutor(),
                     Executors.newCachedThreadPool(),
                     Executors.newFixedThreadPool(2),
                     Executors.newScheduledThreadPool(2),
                 }) {
            try {
                Future future = executor.submit(sleeper);
                try {
                    future.get(SHORT_DELAY_MS, MILLISECONDS);
                    shouldThrow();
                } catch (TimeoutException success) {
                } finally {
                    future.cancel(true);
                }
            }
            finally {
                joinPool(executor);
            }
        }
    }


    /**
     * ThreadPoolExecutor using defaultThreadFactory has
     * specified group, priority, daemon status, and name
     */
    public void testDefaultThreadFactory() throws Exception {
        final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
        Runnable r = new CheckedRunnable() {
            public void realRun() {
                try {
                    Thread current = Thread.currentThread();
                    assertTrue(!current.isDaemon());
                    assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
                    ThreadGroup g = current.getThreadGroup();
                    SecurityManager s = System.getSecurityManager();
                    if (s != null)
                        assertTrue(g == s.getThreadGroup());
                    else
                        assertTrue(g == egroup);
                    String name = current.getName();
                    assertTrue(name.endsWith("thread-1"));
                } catch (SecurityException ok) {
                    // Also pass if not allowed to change setting
                }
            }};
        ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());

        e.execute(r);
        try {
            e.shutdown();
        } catch (SecurityException ok) {
        }

        try {
            Thread.sleep(SHORT_DELAY_MS);
        } finally {
            joinPool(e);
        }
    }

    /**
     * ThreadPoolExecutor using privilegedThreadFactory has
     * specified group, priority, daemon status, name,
     * access control context and context class loader
     */
    public void testPrivilegedThreadFactory() throws Exception {
        Runnable r = new CheckedRunnable() {
            public void realRun() throws Exception {
                final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
                final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
                final AccessControlContext thisacc = AccessController.getContext();
                Runnable r = new CheckedRunnable() {
                    public void realRun() {
                        Thread current = Thread.currentThread();
                        assertTrue(!current.isDaemon());
                        assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
                        ThreadGroup g = current.getThreadGroup();
                        SecurityManager s = System.getSecurityManager();
                        if (s != null)
                            assertTrue(g == s.getThreadGroup());
                        else
                            assertTrue(g == egroup);
                        String name = current.getName();
                        assertTrue(name.endsWith("thread-1"));
                        assertSame(thisccl, current.getContextClassLoader());
                        assertEquals(thisacc, AccessController.getContext());
                    }};
                ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
                e.execute(r);
                e.shutdown();
                Thread.sleep(SHORT_DELAY_MS);
                joinPool(e);
            }};

        runWithPermissions(r,
                           new RuntimePermission("getClassLoader"),
                           new RuntimePermission("setContextClassLoader"),
                           new RuntimePermission("modifyThread"));
    }

    boolean haveCCLPermissions() {
        SecurityManager sm = System.getSecurityManager();
        if (sm != null) {
            try {
                sm.checkPermission(new RuntimePermission("setContextClassLoader"));
                sm.checkPermission(new RuntimePermission("getClassLoader"));
            } catch (AccessControlException e) {
                return false;
            }
        }
        return true;
    }

    void checkCCL() {
        SecurityManager sm = System.getSecurityManager();
        if (sm != null) {
            sm.checkPermission(new RuntimePermission("setContextClassLoader"));
            sm.checkPermission(new RuntimePermission("getClassLoader"));
        }
    }

    class CheckCCL implements Callable<Object> {
        public Object call() {
            checkCCL();
            return null;
        }
    }


    /**
     * Without class loader permissions, creating
     * privilegedCallableUsingCurrentClassLoader throws ACE
     */
    public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
        Runnable r = new CheckedRunnable() {
            public void realRun() throws Exception {
                if (System.getSecurityManager() == null)
                    return;
                try {
                    Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
                    shouldThrow();
                } catch (AccessControlException success) {}
            }};

        runWithoutPermissions(r);
    }

    /**
     * With class loader permissions, calling
     * privilegedCallableUsingCurrentClassLoader does not throw ACE
     */
    public void testprivilegedCallableUsingCCLWithPrivs() throws Exception {
        Runnable r = new CheckedRunnable() {
            public void realRun() throws Exception {
                Executors.privilegedCallableUsingCurrentClassLoader
                    (new NoOpCallable())
                    .call();
            }};

        runWithPermissions(r,
                           new RuntimePermission("getClassLoader"),
                           new RuntimePermission("setContextClassLoader"));
    }

    /**
     * Without permissions, calling privilegedCallable throws ACE
     */
    public void testprivilegedCallableWithNoPrivs() throws Exception {
        Runnable r = new CheckedRunnable() {
            public void realRun() throws Exception {
                if (System.getSecurityManager() == null)
                    return;
                Callable task = Executors.privilegedCallable(new CheckCCL());
                try {
                    task.call();
                    shouldThrow();
                } catch (AccessControlException success) {}
            }};

        runWithoutPermissions(r);

        // It seems rather difficult to test that the
        // AccessControlContext of the privilegedCallable is used
        // instead of its caller.  Below is a failed attempt to do
        // that, which does not work because the AccessController
        // cannot capture the internal state of the current Policy.
        // It would be much more work to differentiate based on,
        // e.g. CodeSource.

//         final AccessControlContext[] noprivAcc = new AccessControlContext[1];
//         final Callable[] task = new Callable[1];

//         runWithPermissions
//             (new CheckedRunnable() {
//                 public void realRun() {
//                     if (System.getSecurityManager() == null)
//                         return;
//                     noprivAcc[0] = AccessController.getContext();
//                     task[0] = Executors.privilegedCallable(new CheckCCL());
//                     try {
//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
//                                                           public Void run() {
//                                                               checkCCL();
//                                                               return null;
//                                                           }}, noprivAcc[0]);
//                         shouldThrow();
//                     } catch (AccessControlException success) {}
//                 }});

//         runWithPermissions
//             (new CheckedRunnable() {
//                 public void realRun() throws Exception {
//                     if (System.getSecurityManager() == null)
//                         return;
//                     // Verify that we have an underprivileged ACC
//                     try {
//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
//                                                           public Void run() {
//                                                               checkCCL();
//                                                               return null;
//                                                           }}, noprivAcc[0]);
//                         shouldThrow();
//                     } catch (AccessControlException success) {}

//                     try {
//                         task[0].call();
//                         shouldThrow();
//                     } catch (AccessControlException success) {}
//                 }},
//              new RuntimePermission("getClassLoader"),
//              new RuntimePermission("setContextClassLoader"));
    }

    /**
     * With permissions, calling privilegedCallable succeeds
     */
    public void testprivilegedCallableWithPrivs() throws Exception {
        Runnable r = new CheckedRunnable() {
            public void realRun() throws Exception {
                Executors.privilegedCallable(new CheckCCL()).call();
            }};

         runWithPermissions(r,
                           new RuntimePermission("getClassLoader"),
                           new RuntimePermission("setContextClassLoader"));
    }

    /**
     * callable(Runnable) returns null when called
     */
    public void testCallable1() throws Exception {
        Callable c = Executors.callable(new NoOpRunnable());
        assertNull(c.call());
    }

    /**
     * callable(Runnable, result) returns result when called
     */
    public void testCallable2() throws Exception {
        Callable c = Executors.callable(new NoOpRunnable(), one);
        assertSame(one, c.call());
    }

    /**
     * callable(PrivilegedAction) returns its result when called
     */
    public void testCallable3() throws Exception {
        Callable c = Executors.callable(new PrivilegedAction() {
                public Object run() { return one; }});
        assertSame(one, c.call());
    }

    /**
     * callable(PrivilegedExceptionAction) returns its result when called
     */
    public void testCallable4() throws Exception {
        Callable c = Executors.callable(new PrivilegedExceptionAction() {
                public Object run() { return one; }});
        assertSame(one, c.call());
    }


    /**
     * callable(null Runnable) throws NPE
     */
    public void testCallableNPE1() {
        try {
            Callable c = Executors.callable((Runnable) null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * callable(null, result) throws NPE
     */
    public void testCallableNPE2() {
        try {
            Callable c = Executors.callable((Runnable) null, one);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * callable(null PrivilegedAction) throws NPE
     */
    public void testCallableNPE3() {
        try {
            Callable c = Executors.callable((PrivilegedAction) null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * callable(null PrivilegedExceptionAction) throws NPE
     */
    public void testCallableNPE4() {
        try {
            Callable c = Executors.callable((PrivilegedExceptionAction) null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }


}
Revision:	1.31
Committed:	Thu Sep 16 00:52:49 2010 UTC (13 years, 7 months ago) by jsr166
Branch:	MAIN
Changes since 1.30:	+19 -20 lines
Log Message:	testcase hygiene: introduce CheckedRecursiveAction and CheckedRecursiveTask; eliminate almost all threadAssertXXX; use preferred junit conventions;narrow the scope of exception checking code; make sure test failures in non-junit threads produce proper stacktraces
#	Content
1	/*
2	* Written by Doug Lea with assistance from members of JCP JSR-166
3	* Expert Group and released to the public domain, as explained at
4	* http://creativecommons.org/licenses/publicdomain
5	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	* Pat Fisher, Mike Judd.
7	*/
8
9
10	import junit.framework.*;
11	import java.util.*;
12	import java.util.concurrent.*;
13	import static java.util.concurrent.TimeUnit.MILLISECONDS;
14	import java.math.BigInteger;
15	import java.security.*;
16
17	public class ExecutorsTest extends JSR166TestCase {
18	public static void main(String[] args) {
19	junit.textui.TestRunner.run(suite());
20	}
21	public static Test suite() {
22	return new TestSuite(ExecutorsTest.class);
23	}
24
25	/**
26	* A newCachedThreadPool can execute runnables
27	*/
28	public void testNewCachedThreadPool1() {
29	ExecutorService e = Executors.newCachedThreadPool();
30	e.execute(new NoOpRunnable());
31	e.execute(new NoOpRunnable());
32	e.execute(new NoOpRunnable());
33	joinPool(e);
34	}
35
36	/**
37	* A newCachedThreadPool with given ThreadFactory can execute runnables
38	*/
39	public void testNewCachedThreadPool2() {
40	ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
41	e.execute(new NoOpRunnable());
42	e.execute(new NoOpRunnable());
43	e.execute(new NoOpRunnable());
44	joinPool(e);
45	}
46
47	/**
48	* A newCachedThreadPool with null ThreadFactory throws NPE
49	*/
50	public void testNewCachedThreadPool3() {
51	try {
52	ExecutorService e = Executors.newCachedThreadPool(null);
53	shouldThrow();
54	} catch (NullPointerException success) {}
55	}
56
57
58	/**
59	* A new SingleThreadExecutor can execute runnables
60	*/
61	public void testNewSingleThreadExecutor1() {
62	ExecutorService e = Executors.newSingleThreadExecutor();
63	e.execute(new NoOpRunnable());
64	e.execute(new NoOpRunnable());
65	e.execute(new NoOpRunnable());
66	joinPool(e);
67	}
68
69	/**
70	* A new SingleThreadExecutor with given ThreadFactory can execute runnables
71	*/
72	public void testNewSingleThreadExecutor2() {
73	ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
74	e.execute(new NoOpRunnable());
75	e.execute(new NoOpRunnable());
76	e.execute(new NoOpRunnable());
77	joinPool(e);
78	}
79
80	/**
81	* A new SingleThreadExecutor with null ThreadFactory throws NPE
82	*/
83	public void testNewSingleThreadExecutor3() {
84	try {
85	ExecutorService e = Executors.newSingleThreadExecutor(null);
86	shouldThrow();
87	} catch (NullPointerException success) {}
88	}
89
90	/**
91	* A new SingleThreadExecutor cannot be casted to concrete implementation
92	*/
93	public void testCastNewSingleThreadExecutor() {
94	ExecutorService e = Executors.newSingleThreadExecutor();
95	try {
96	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
97	shouldThrow();
98	} catch (ClassCastException success) {
99	} finally {
100	joinPool(e);
101	}
102	}
103
104
105	/**
106	* A new newFixedThreadPool can execute runnables
107	*/
108	public void testNewFixedThreadPool1() {
109	ExecutorService e = Executors.newFixedThreadPool(2);
110	e.execute(new NoOpRunnable());
111	e.execute(new NoOpRunnable());
112	e.execute(new NoOpRunnable());
113	joinPool(e);
114	}
115
116	/**
117	* A new newFixedThreadPool with given ThreadFactory can execute runnables
118	*/
119	public void testNewFixedThreadPool2() {
120	ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
121	e.execute(new NoOpRunnable());
122	e.execute(new NoOpRunnable());
123	e.execute(new NoOpRunnable());
124	joinPool(e);
125	}
126
127	/**
128	* A new newFixedThreadPool with null ThreadFactory throws NPE
129	*/
130	public void testNewFixedThreadPool3() {
131	try {
132	ExecutorService e = Executors.newFixedThreadPool(2, null);
133	shouldThrow();
134	} catch (NullPointerException success) {}
135	}
136
137	/**
138	* A new newFixedThreadPool with 0 threads throws IAE
139	*/
140	public void testNewFixedThreadPool4() {
141	try {
142	ExecutorService e = Executors.newFixedThreadPool(0);
143	shouldThrow();
144	} catch (IllegalArgumentException success) {}
145	}
146
147
148	/**
149	* An unconfigurable newFixedThreadPool can execute runnables
150	*/
151	public void testunconfigurableExecutorService() {
152	ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
153	e.execute(new NoOpRunnable());
154	e.execute(new NoOpRunnable());
155	e.execute(new NoOpRunnable());
156	joinPool(e);
157	}
158
159	/**
160	* unconfigurableExecutorService(null) throws NPE
161	*/
162	public void testunconfigurableExecutorServiceNPE() {
163	try {
164	ExecutorService e = Executors.unconfigurableExecutorService(null);
165	shouldThrow();
166	} catch (NullPointerException success) {}
167	}
168
169	/**
170	* unconfigurableScheduledExecutorService(null) throws NPE
171	*/
172	public void testunconfigurableScheduledExecutorServiceNPE() {
173	try {
174	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
175	shouldThrow();
176	} catch (NullPointerException success) {}
177	}
178
179
180	/**
181	* a newSingleThreadScheduledExecutor successfully runs delayed task
182	*/
183	public void testNewSingleThreadScheduledExecutor() throws Exception {
184	TrackedCallable callable = new TrackedCallable();
185	ScheduledExecutorService p1 = Executors.newSingleThreadScheduledExecutor();
186	Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
187	assertFalse(callable.done);
188	Thread.sleep(MEDIUM_DELAY_MS);
189	assertTrue(callable.done);
190	assertEquals(Boolean.TRUE, f.get());
191	joinPool(p1);
192	}
193
194	/**
195	* a newScheduledThreadPool successfully runs delayed task
196	*/
197	public void testnewScheduledThreadPool() throws Exception {
198	TrackedCallable callable = new TrackedCallable();
199	ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2);
200	Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
201	assertFalse(callable.done);
202	Thread.sleep(MEDIUM_DELAY_MS);
203	assertTrue(callable.done);
204	assertEquals(Boolean.TRUE, f.get());
205	joinPool(p1);
206	}
207
208	/**
209	* an unconfigurable newScheduledThreadPool successfully runs delayed task
210	*/
211	public void testunconfigurableScheduledExecutorService() throws Exception {
212	TrackedCallable callable = new TrackedCallable();
213	ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2));
214	Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
215	assertFalse(callable.done);
216	Thread.sleep(MEDIUM_DELAY_MS);
217	assertTrue(callable.done);
218	assertEquals(Boolean.TRUE, f.get());
219	joinPool(p1);
220	}
221
222	/**
223	* Future.get on submitted tasks will time out if they compute too long.
224	*/
225	public void testTimedCallable() throws Exception {
226	final Runnable sleeper =
227	new RunnableShouldThrow(InterruptedException.class) {
228	public void realRun() throws InterruptedException {
229	Thread.sleep(LONG_DELAY_MS);
230	}};
231	for (ExecutorService executor :
232	new ExecutorService[] {
233	Executors.newSingleThreadExecutor(),
234	Executors.newCachedThreadPool(),
235	Executors.newFixedThreadPool(2),
236	Executors.newScheduledThreadPool(2),
237	}) {
238	try {
239	Future future = executor.submit(sleeper);
240	try {
241	future.get(SHORT_DELAY_MS, MILLISECONDS);
242	shouldThrow();
243	} catch (TimeoutException success) {
244	} finally {
245	future.cancel(true);
246	}
247	}
248	finally {
249	joinPool(executor);
250	}
251	}
252	}
253
254
255	/**
256	* ThreadPoolExecutor using defaultThreadFactory has
257	* specified group, priority, daemon status, and name
258	*/
259	public void testDefaultThreadFactory() throws Exception {
260	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
261	Runnable r = new CheckedRunnable() {
262	public void realRun() {
263	try {
264	Thread current = Thread.currentThread();
265	assertTrue(!current.isDaemon());
266	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
267	ThreadGroup g = current.getThreadGroup();
268	SecurityManager s = System.getSecurityManager();
269	if (s != null)
270	assertTrue(g == s.getThreadGroup());
271	else
272	assertTrue(g == egroup);
273	String name = current.getName();
274	assertTrue(name.endsWith("thread-1"));
275	} catch (SecurityException ok) {
276	// Also pass if not allowed to change setting
277	}
278	}};
279	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
280
281	e.execute(r);
282	try {
283	e.shutdown();
284	} catch (SecurityException ok) {
285	}
286
287	try {
288	Thread.sleep(SHORT_DELAY_MS);
289	} finally {
290	joinPool(e);
291	}
292	}
293
294	/**
295	* ThreadPoolExecutor using privilegedThreadFactory has
296	* specified group, priority, daemon status, name,
297	* access control context and context class loader
298	*/
299	public void testPrivilegedThreadFactory() throws Exception {
300	Runnable r = new CheckedRunnable() {
301	public void realRun() throws Exception {
302	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
303	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
304	final AccessControlContext thisacc = AccessController.getContext();
305	Runnable r = new CheckedRunnable() {
306	public void realRun() {
307	Thread current = Thread.currentThread();
308	assertTrue(!current.isDaemon());
309	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
310	ThreadGroup g = current.getThreadGroup();
311	SecurityManager s = System.getSecurityManager();
312	if (s != null)
313	assertTrue(g == s.getThreadGroup());
314	else
315	assertTrue(g == egroup);
316	String name = current.getName();
317	assertTrue(name.endsWith("thread-1"));
318	assertSame(thisccl, current.getContextClassLoader());
319	assertEquals(thisacc, AccessController.getContext());
320	}};
321	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
322	e.execute(r);
323	e.shutdown();
324	Thread.sleep(SHORT_DELAY_MS);
325	joinPool(e);
326	}};
327
328	runWithPermissions(r,
329	new RuntimePermission("getClassLoader"),
330	new RuntimePermission("setContextClassLoader"),
331	new RuntimePermission("modifyThread"));
332	}
333
334	boolean haveCCLPermissions() {
335	SecurityManager sm = System.getSecurityManager();
336	if (sm != null) {
337	try {
338	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
339	sm.checkPermission(new RuntimePermission("getClassLoader"));
340	} catch (AccessControlException e) {
341	return false;
342	}
343	}
344	return true;
345	}
346
347	void checkCCL() {
348	SecurityManager sm = System.getSecurityManager();
349	if (sm != null) {
350	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
351	sm.checkPermission(new RuntimePermission("getClassLoader"));
352	}
353	}
354
355	class CheckCCL implements Callable<Object> {
356	public Object call() {
357	checkCCL();
358	return null;
359	}
360	}
361
362
363	/**
364	* Without class loader permissions, creating
365	* privilegedCallableUsingCurrentClassLoader throws ACE
366	*/
367	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
368	Runnable r = new CheckedRunnable() {
369	public void realRun() throws Exception {
370	if (System.getSecurityManager() == null)
371	return;
372	try {
373	Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
374	shouldThrow();
375	} catch (AccessControlException success) {}
376	}};
377
378	runWithoutPermissions(r);
379	}
380
381	/**
382	* With class loader permissions, calling
383	* privilegedCallableUsingCurrentClassLoader does not throw ACE
384	*/
385	public void testprivilegedCallableUsingCCLWithPrivs() throws Exception {
386	Runnable r = new CheckedRunnable() {
387	public void realRun() throws Exception {
388	Executors.privilegedCallableUsingCurrentClassLoader
389	(new NoOpCallable())
390	.call();
391	}};
392
393	runWithPermissions(r,
394	new RuntimePermission("getClassLoader"),
395	new RuntimePermission("setContextClassLoader"));
396	}
397
398	/**
399	* Without permissions, calling privilegedCallable throws ACE
400	*/
401	public void testprivilegedCallableWithNoPrivs() throws Exception {
402	Runnable r = new CheckedRunnable() {
403	public void realRun() throws Exception {
404	if (System.getSecurityManager() == null)
405	return;
406	Callable task = Executors.privilegedCallable(new CheckCCL());
407	try {
408	task.call();
409	shouldThrow();
410	} catch (AccessControlException success) {}
411	}};
412
413	runWithoutPermissions(r);
414
415	// It seems rather difficult to test that the
416	// AccessControlContext of the privilegedCallable is used
417	// instead of its caller. Below is a failed attempt to do
418	// that, which does not work because the AccessController
419	// cannot capture the internal state of the current Policy.
420	// It would be much more work to differentiate based on,
421	// e.g. CodeSource.
422
423	// final AccessControlContext[] noprivAcc = new AccessControlContext[1];
424	// final Callable[] task = new Callable[1];
425
426	// runWithPermissions
427	// (new CheckedRunnable() {
428	// public void realRun() {
429	// if (System.getSecurityManager() == null)
430	// return;
431	// noprivAcc[0] = AccessController.getContext();
432	// task[0] = Executors.privilegedCallable(new CheckCCL());
433	// try {
434	// AccessController.doPrivileged(new PrivilegedAction<Void>() {
435	// public Void run() {
436	// checkCCL();
437	// return null;
438	// }}, noprivAcc[0]);
439	// shouldThrow();
440	// } catch (AccessControlException success) {}
441	// }});
442
443	// runWithPermissions
444	// (new CheckedRunnable() {
445	// public void realRun() throws Exception {
446	// if (System.getSecurityManager() == null)
447	// return;
448	// // Verify that we have an underprivileged ACC
449	// try {
450	// AccessController.doPrivileged(new PrivilegedAction<Void>() {
451	// public Void run() {
452	// checkCCL();
453	// return null;
454	// }}, noprivAcc[0]);
455	// shouldThrow();
456	// } catch (AccessControlException success) {}
457
458	// try {
459	// task[0].call();
460	// shouldThrow();
461	// } catch (AccessControlException success) {}
462	// }},
463	// new RuntimePermission("getClassLoader"),
464	// new RuntimePermission("setContextClassLoader"));
465	}
466
467	/**
468	* With permissions, calling privilegedCallable succeeds
469	*/
470	public void testprivilegedCallableWithPrivs() throws Exception {
471	Runnable r = new CheckedRunnable() {
472	public void realRun() throws Exception {
473	Executors.privilegedCallable(new CheckCCL()).call();
474	}};
475
476	runWithPermissions(r,
477	new RuntimePermission("getClassLoader"),
478	new RuntimePermission("setContextClassLoader"));
479	}
480
481	/**
482	* callable(Runnable) returns null when called
483	*/
484	public void testCallable1() throws Exception {
485	Callable c = Executors.callable(new NoOpRunnable());
486	assertNull(c.call());
487	}
488
489	/**
490	* callable(Runnable, result) returns result when called
491	*/
492	public void testCallable2() throws Exception {
493	Callable c = Executors.callable(new NoOpRunnable(), one);
494	assertSame(one, c.call());
495	}
496
497	/**
498	* callable(PrivilegedAction) returns its result when called
499	*/
500	public void testCallable3() throws Exception {
501	Callable c = Executors.callable(new PrivilegedAction() {
502	public Object run() { return one; }});
503	assertSame(one, c.call());
504	}
505
506	/**
507	* callable(PrivilegedExceptionAction) returns its result when called
508	*/
509	public void testCallable4() throws Exception {
510	Callable c = Executors.callable(new PrivilegedExceptionAction() {
511	public Object run() { return one; }});
512	assertSame(one, c.call());
513	}
514
515
516	/**
517	* callable(null Runnable) throws NPE
518	*/
519	public void testCallableNPE1() {
520	try {
521	Callable c = Executors.callable((Runnable) null);
522	shouldThrow();
523	} catch (NullPointerException success) {}
524	}
525
526	/**
527	* callable(null, result) throws NPE
528	*/
529	public void testCallableNPE2() {
530	try {
531	Callable c = Executors.callable((Runnable) null, one);
532	shouldThrow();
533	} catch (NullPointerException success) {}
534	}
535
536	/**
537	* callable(null PrivilegedAction) throws NPE
538	*/
539	public void testCallableNPE3() {
540	try {
541	Callable c = Executors.callable((PrivilegedAction) null);
542	shouldThrow();
543	} catch (NullPointerException success) {}
544	}
545
546	/**
547	* callable(null PrivilegedExceptionAction) throws NPE
548	*/
549	public void testCallableNPE4() {
550	try {
551	Callable c = Executors.callable((PrivilegedExceptionAction) null);
552	shouldThrow();
553	} catch (NullPointerException success) {}
554	}
555
556
557	}