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/publicdomain/zero/1.0/
 * Other contributors include Andrew Wright, Jeffrey Hayes,
 * Pat Fisher, Mike Judd.
 */

import static java.util.concurrent.TimeUnit.MILLISECONDS;

import java.security.AccessControlContext;
import java.security.AccessControlException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadPoolExecutor;

import junit.framework.Test;
import junit.framework.TestSuite;

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

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

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

    /**
     * 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() {
        final ExecutorService e = Executors.newSingleThreadExecutor();
        try (PoolCleaner cleaner = cleaner(e)) {
            e.execute(new NoOpRunnable());
            e.execute(new NoOpRunnable());
            e.execute(new NoOpRunnable());
        }
    }

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

    /**
     * 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() {
        final ExecutorService e = Executors.newSingleThreadExecutor();
        try (PoolCleaner cleaner = cleaner(e)) {
            try {
                ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
                shouldThrow();
            } catch (ClassCastException success) {}
        }
    }

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

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

    /**
     * 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() {
        final ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
        try (PoolCleaner cleaner = cleaner(e)) {
            e.execute(new NoOpRunnable());
            e.execute(new NoOpRunnable());
            e.execute(new NoOpRunnable());
        }
    }

    /**
     * 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 {
        final ScheduledExecutorService p = Executors.newSingleThreadScheduledExecutor();
        try (PoolCleaner cleaner = cleaner(p)) {
            final CountDownLatch proceed = new CountDownLatch(1);
            final Runnable task = new CheckedRunnable() {
                public void realRun() {
                    await(proceed);
                }};
            long startTime = System.nanoTime();
            Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
                                  timeoutMillis(), MILLISECONDS);
            assertFalse(f.isDone());
            proceed.countDown();
            assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
            assertSame(Boolean.TRUE, f.get());
            assertTrue(f.isDone());
            assertFalse(f.isCancelled());
            assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
        }
    }

    /**
     * a newScheduledThreadPool successfully runs delayed task
     */
    public void testNewScheduledThreadPool() throws Exception {
        final ScheduledExecutorService p = Executors.newScheduledThreadPool(2);
        try (PoolCleaner cleaner = cleaner(p)) {
            final CountDownLatch proceed = new CountDownLatch(1);
            final Runnable task = new CheckedRunnable() {
                public void realRun() {
                    await(proceed);
                }};
            long startTime = System.nanoTime();
            Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
                                  timeoutMillis(), MILLISECONDS);
            assertFalse(f.isDone());
            proceed.countDown();
            assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
            assertSame(Boolean.TRUE, f.get());
            assertTrue(f.isDone());
            assertFalse(f.isCancelled());
            assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
        }
    }

    /**
     * an unconfigurable newScheduledThreadPool successfully runs delayed task
     */
    public void testUnconfigurableScheduledExecutorService() throws Exception {
        final ScheduledExecutorService p =
            Executors.unconfigurableScheduledExecutorService
            (Executors.newScheduledThreadPool(2));
        try (PoolCleaner cleaner = cleaner(p)) {
            final CountDownLatch proceed = new CountDownLatch(1);
            final Runnable task = new CheckedRunnable() {
                public void realRun() {
                    await(proceed);
                }};
            long startTime = System.nanoTime();
            Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
                                  timeoutMillis(), MILLISECONDS);
            assertFalse(f.isDone());
            proceed.countDown();
            assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
            assertSame(Boolean.TRUE, f.get());
            assertTrue(f.isDone());
            assertFalse(f.isCancelled());
            assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
        }
    }

    /**
     * Future.get on submitted tasks will time out if they compute too long.
     */
    public void testTimedCallable() throws Exception {
        final ExecutorService[] executors = {
            Executors.newSingleThreadExecutor(),
            Executors.newCachedThreadPool(),
            Executors.newFixedThreadPool(2),
            Executors.newScheduledThreadPool(2),
        };

        final Runnable sleeper = new CheckedInterruptedRunnable() {
            public void realRun() throws InterruptedException {
                delay(LONG_DELAY_MS);
            }};

        List<Thread> threads = new ArrayList<>();
        for (final ExecutorService executor : executors) {
            threads.add(newStartedThread(new CheckedRunnable() {
                public void realRun() {
                    Future future = executor.submit(sleeper);
                    assertFutureTimesOut(future);
                }}));
        }
        for (Thread thread : threads)
            awaitTermination(thread);
        for (ExecutorService executor : executors)
            joinPool(executor);
    }

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

    /**
     * ThreadPoolExecutor using privilegedThreadFactory has
     * specified group, priority, daemon status, name,
     * access control context and context class loader
     */
    public void testPrivilegedThreadFactory() throws Exception {
        final CountDownLatch done = new CountDownLatch(1);
        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();
                        assertFalse(current.isDaemon());
                        assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
                        SecurityManager s = System.getSecurityManager();
                        assertSame(current.getThreadGroup(),
                                   (s == null) ? egroup : s.getThreadGroup());
                        assertTrue(current.getName().endsWith("thread-1"));
                        assertSame(thisccl, current.getContextClassLoader());
                        assertEquals(thisacc, AccessController.getContext());
                        done.countDown();
                    }};
                ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
                try (PoolCleaner cleaner = cleaner(e)) {
                    e.execute(r);
                    await(done);
                }
            }};

        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 {
        // Avoid classloader-related SecurityExceptions in swingui.TestRunner
        Executors.privilegedCallable(new CheckCCL());

        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:	1.48
Committed:	Sat Mar 18 20:42:20 2017 UTC (7 years, 1 month ago) by jsr166
Branch:	MAIN
Changes since 1.47:	+8 -16 lines
Log Message:	better assertion style
#	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/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 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	import junit.framework.Test;
27	import junit.framework.TestSuite;
28
29	public class ExecutorsTest extends JSR166TestCase {
30	public static void main(String[] args) {
31	main(suite(), args);
32	}
33	public static Test suite() {
34	return new TestSuite(ExecutorsTest.class);
35	}
36
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	}
48
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
61	/**
62	* A newCachedThreadPool with null ThreadFactory throws NPE
63	*/
64	public void testNewCachedThreadPool3() {
65	try {
66	ExecutorService e = Executors.newCachedThreadPool(null);
67	shouldThrow();
68	} catch (NullPointerException success) {}
69	}
70
71	/**
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 e = 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	* 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 NPE
144	*/
145	public void testNewFixedThreadPool3() {
146	try {
147	ExecutorService e = Executors.newFixedThreadPool(2, null);
148	shouldThrow();
149	} catch (NullPointerException success) {}
150	}
151
152	/**
153	* A new newFixedThreadPool with 0 threads throws IAE
154	*/
155	public void testNewFixedThreadPool4() {
156	try {
157	ExecutorService e = Executors.newFixedThreadPool(0);
158	shouldThrow();
159	} catch (IllegalArgumentException success) {}
160	}
161
162	/**
163	* An unconfigurable newFixedThreadPool can execute runnables
164	*/
165	public void testUnconfigurableExecutorService() {
166	final ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
167	try (PoolCleaner cleaner = cleaner(e)) {
168	e.execute(new NoOpRunnable());
169	e.execute(new NoOpRunnable());
170	e.execute(new NoOpRunnable());
171	}
172	}
173
174	/**
175	* unconfigurableExecutorService(null) throws NPE
176	*/
177	public void testUnconfigurableExecutorServiceNPE() {
178	try {
179	ExecutorService e = Executors.unconfigurableExecutorService(null);
180	shouldThrow();
181	} catch (NullPointerException success) {}
182	}
183
184	/**
185	* unconfigurableScheduledExecutorService(null) throws NPE
186	*/
187	public void testUnconfigurableScheduledExecutorServiceNPE() {
188	try {
189	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
190	shouldThrow();
191	} catch (NullPointerException success) {}
192	}
193
194	/**
195	* a newSingleThreadScheduledExecutor successfully runs delayed task
196	*/
197	public void testNewSingleThreadScheduledExecutor() throws Exception {
198	final ScheduledExecutorService p = Executors.newSingleThreadScheduledExecutor();
199	try (PoolCleaner cleaner = cleaner(p)) {
200	final CountDownLatch proceed = new CountDownLatch(1);
201	final Runnable task = new CheckedRunnable() {
202	public void realRun() {
203	await(proceed);
204	}};
205	long startTime = System.nanoTime();
206	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
207	timeoutMillis(), MILLISECONDS);
208	assertFalse(f.isDone());
209	proceed.countDown();
210	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
211	assertSame(Boolean.TRUE, f.get());
212	assertTrue(f.isDone());
213	assertFalse(f.isCancelled());
214	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
215	}
216	}
217
218	/**
219	* a newScheduledThreadPool successfully runs delayed task
220	*/
221	public void testNewScheduledThreadPool() throws Exception {
222	final ScheduledExecutorService p = Executors.newScheduledThreadPool(2);
223	try (PoolCleaner cleaner = cleaner(p)) {
224	final CountDownLatch proceed = new CountDownLatch(1);
225	final Runnable task = new CheckedRunnable() {
226	public void realRun() {
227	await(proceed);
228	}};
229	long startTime = System.nanoTime();
230	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
231	timeoutMillis(), MILLISECONDS);
232	assertFalse(f.isDone());
233	proceed.countDown();
234	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
235	assertSame(Boolean.TRUE, f.get());
236	assertTrue(f.isDone());
237	assertFalse(f.isCancelled());
238	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
239	}
240	}
241
242	/**
243	* an unconfigurable newScheduledThreadPool successfully runs delayed task
244	*/
245	public void testUnconfigurableScheduledExecutorService() throws Exception {
246	final ScheduledExecutorService p =
247	Executors.unconfigurableScheduledExecutorService
248	(Executors.newScheduledThreadPool(2));
249	try (PoolCleaner cleaner = cleaner(p)) {
250	final CountDownLatch proceed = new CountDownLatch(1);
251	final Runnable task = new CheckedRunnable() {
252	public void realRun() {
253	await(proceed);
254	}};
255	long startTime = System.nanoTime();
256	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
257	timeoutMillis(), MILLISECONDS);
258	assertFalse(f.isDone());
259	proceed.countDown();
260	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
261	assertSame(Boolean.TRUE, f.get());
262	assertTrue(f.isDone());
263	assertFalse(f.isCancelled());
264	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
265	}
266	}
267
268	/**
269	* Future.get on submitted tasks will time out if they compute too long.
270	*/
271	public void testTimedCallable() throws Exception {
272	final ExecutorService[] executors = {
273	Executors.newSingleThreadExecutor(),
274	Executors.newCachedThreadPool(),
275	Executors.newFixedThreadPool(2),
276	Executors.newScheduledThreadPool(2),
277	};
278
279	final Runnable sleeper = new CheckedInterruptedRunnable() {
280	public void realRun() throws InterruptedException {
281	delay(LONG_DELAY_MS);
282	}};
283
284	List<Thread> threads = new ArrayList<>();
285	for (final ExecutorService executor : executors) {
286	threads.add(newStartedThread(new CheckedRunnable() {
287	public void realRun() {
288	Future future = executor.submit(sleeper);
289	assertFutureTimesOut(future);
290	}}));
291	}
292	for (Thread thread : threads)
293	awaitTermination(thread);
294	for (ExecutorService executor : executors)
295	joinPool(executor);
296	}
297
298	/**
299	* ThreadPoolExecutor using defaultThreadFactory has
300	* specified group, priority, daemon status, and name
301	*/
302	public void testDefaultThreadFactory() throws Exception {
303	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
304	final CountDownLatch done = new CountDownLatch(1);
305	Runnable r = new CheckedRunnable() {
306	public void realRun() {
307	try {
308	Thread current = Thread.currentThread();
309	assertFalse(current.isDaemon());
310	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
311	SecurityManager s = System.getSecurityManager();
312	assertSame(current.getThreadGroup(),
313	(s == null) ? egroup : s.getThreadGroup());
314	assertTrue(current.getName().endsWith("thread-1"));
315	} catch (SecurityException ok) {
316	// Also pass if not allowed to change setting
317	}
318	done.countDown();
319	}};
320	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
321	try (PoolCleaner cleaner = cleaner(e)) {
322	e.execute(r);
323	await(done);
324	}
325	}
326
327	/**
328	* ThreadPoolExecutor using privilegedThreadFactory has
329	* specified group, priority, daemon status, name,
330	* access control context and context class loader
331	*/
332	public void testPrivilegedThreadFactory() throws Exception {
333	final CountDownLatch done = new CountDownLatch(1);
334	Runnable r = new CheckedRunnable() {
335	public void realRun() throws Exception {
336	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
337	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
338	final AccessControlContext thisacc = AccessController.getContext();
339	Runnable r = new CheckedRunnable() {
340	public void realRun() {
341	Thread current = Thread.currentThread();
342	assertFalse(current.isDaemon());
343	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
344	SecurityManager s = System.getSecurityManager();
345	assertSame(current.getThreadGroup(),
346	(s == null) ? egroup : s.getThreadGroup());
347	assertTrue(current.getName().endsWith("thread-1"));
348	assertSame(thisccl, current.getContextClassLoader());
349	assertEquals(thisacc, AccessController.getContext());
350	done.countDown();
351	}};
352	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
353	try (PoolCleaner cleaner = cleaner(e)) {
354	e.execute(r);
355	await(done);
356	}
357	}};
358
359	runWithPermissions(r,
360	new RuntimePermission("getClassLoader"),
361	new RuntimePermission("setContextClassLoader"),
362	new RuntimePermission("modifyThread"));
363	}
364
365	boolean haveCCLPermissions() {
366	SecurityManager sm = System.getSecurityManager();
367	if (sm != null) {
368	try {
369	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
370	sm.checkPermission(new RuntimePermission("getClassLoader"));
371	} catch (AccessControlException e) {
372	return false;
373	}
374	}
375	return true;
376	}
377
378	void checkCCL() {
379	SecurityManager sm = System.getSecurityManager();
380	if (sm != null) {
381	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
382	sm.checkPermission(new RuntimePermission("getClassLoader"));
383	}
384	}
385
386	class CheckCCL implements Callable<Object> {
387	public Object call() {
388	checkCCL();
389	return null;
390	}
391	}
392
393	/**
394	* Without class loader permissions, creating
395	* privilegedCallableUsingCurrentClassLoader throws ACE
396	*/
397	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
398	Runnable r = new CheckedRunnable() {
399	public void realRun() throws Exception {
400	if (System.getSecurityManager() == null)
401	return;
402	try {
403	Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
404	shouldThrow();
405	} catch (AccessControlException success) {}
406	}};
407
408	runWithoutPermissions(r);
409	}
410
411	/**
412	* With class loader permissions, calling
413	* privilegedCallableUsingCurrentClassLoader does not throw ACE
414	*/
415	public void testPrivilegedCallableUsingCCLWithPrivs() throws Exception {
416	Runnable r = new CheckedRunnable() {
417	public void realRun() throws Exception {
418	Executors.privilegedCallableUsingCurrentClassLoader
419	(new NoOpCallable())
420	.call();
421	}};
422
423	runWithPermissions(r,
424	new RuntimePermission("getClassLoader"),
425	new RuntimePermission("setContextClassLoader"));
426	}
427
428	/**
429	* Without permissions, calling privilegedCallable throws ACE
430	*/
431	public void testPrivilegedCallableWithNoPrivs() throws Exception {
432	// Avoid classloader-related SecurityExceptions in swingui.TestRunner
433	Executors.privilegedCallable(new CheckCCL());
434
435	Runnable r = new CheckedRunnable() {
436	public void realRun() throws Exception {
437	if (System.getSecurityManager() == null)
438	return;
439	Callable task = Executors.privilegedCallable(new CheckCCL());
440	try {
441	task.call();
442	shouldThrow();
443	} catch (AccessControlException success) {}
444	}};
445
446	runWithoutPermissions(r);
447
448	// It seems rather difficult to test that the
449	// AccessControlContext of the privilegedCallable is used
450	// instead of its caller. Below is a failed attempt to do
451	// that, which does not work because the AccessController
452	// cannot capture the internal state of the current Policy.
453	// It would be much more work to differentiate based on,
454	// e.g. CodeSource.
455
456	// final AccessControlContext[] noprivAcc = new AccessControlContext[1];
457	// final Callable[] task = new Callable[1];
458
459	// runWithPermissions
460	// (new CheckedRunnable() {
461	// public void realRun() {
462	// if (System.getSecurityManager() == null)
463	// return;
464	// noprivAcc[0] = AccessController.getContext();
465	// task[0] = Executors.privilegedCallable(new CheckCCL());
466	// try {
467	// AccessController.doPrivileged(new PrivilegedAction<Void>() {
468	// public Void run() {
469	// checkCCL();
470	// return null;
471	// }}, noprivAcc[0]);
472	// shouldThrow();
473	// } catch (AccessControlException success) {}
474	// }});
475
476	// runWithPermissions
477	// (new CheckedRunnable() {
478	// public void realRun() throws Exception {
479	// if (System.getSecurityManager() == null)
480	// return;
481	// // Verify that we have an underprivileged ACC
482	// try {
483	// AccessController.doPrivileged(new PrivilegedAction<Void>() {
484	// public Void run() {
485	// checkCCL();
486	// return null;
487	// }}, noprivAcc[0]);
488	// shouldThrow();
489	// } catch (AccessControlException success) {}
490
491	// try {
492	// task[0].call();
493	// shouldThrow();
494	// } catch (AccessControlException success) {}
495	// }},
496	// new RuntimePermission("getClassLoader"),
497	// new RuntimePermission("setContextClassLoader"));
498	}
499
500	/**
501	* With permissions, calling privilegedCallable succeeds
502	*/
503	public void testPrivilegedCallableWithPrivs() throws Exception {
504	Runnable r = new CheckedRunnable() {
505	public void realRun() throws Exception {
506	Executors.privilegedCallable(new CheckCCL()).call();
507	}};
508
509	runWithPermissions(r,
510	new RuntimePermission("getClassLoader"),
511	new RuntimePermission("setContextClassLoader"));
512	}
513
514	/**
515	* callable(Runnable) returns null when called
516	*/
517	public void testCallable1() throws Exception {
518	Callable c = Executors.callable(new NoOpRunnable());
519	assertNull(c.call());
520	}
521
522	/**
523	* callable(Runnable, result) returns result when called
524	*/
525	public void testCallable2() throws Exception {
526	Callable c = Executors.callable(new NoOpRunnable(), one);
527	assertSame(one, c.call());
528	}
529
530	/**
531	* callable(PrivilegedAction) returns its result when called
532	*/
533	public void testCallable3() throws Exception {
534	Callable c = Executors.callable(new PrivilegedAction() {
535	public Object run() { return one; }});
536	assertSame(one, c.call());
537	}
538
539	/**
540	* callable(PrivilegedExceptionAction) returns its result when called
541	*/
542	public void testCallable4() throws Exception {
543	Callable c = Executors.callable(new PrivilegedExceptionAction() {
544	public Object run() { return one; }});
545	assertSame(one, c.call());
546	}
547
548	/**
549	* callable(null Runnable) throws NPE
550	*/
551	public void testCallableNPE1() {
552	try {
553	Callable c = Executors.callable((Runnable) null);
554	shouldThrow();
555	} catch (NullPointerException success) {}
556	}
557
558	/**
559	* callable(null, result) throws NPE
560	*/
561	public void testCallableNPE2() {
562	try {
563	Callable c = Executors.callable((Runnable) null, one);
564	shouldThrow();
565	} catch (NullPointerException success) {}
566	}
567
568	/**
569	* callable(null PrivilegedAction) throws NPE
570	*/
571	public void testCallableNPE3() {
572	try {
573	Callable c = Executors.callable((PrivilegedAction) null);
574	shouldThrow();
575	} catch (NullPointerException success) {}
576	}
577
578	/**
579	* callable(null PrivilegedExceptionAction) throws NPE
580	*/
581	public void testCallableNPE4() {
582	try {
583	Callable c = Executors.callable((PrivilegedExceptionAction) null);
584	shouldThrow();
585	} catch (NullPointerException success) {}
586	}
587
588	}