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 unused = 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 unused = 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
     * NullPointerException
     */
    public void testNewFixedThreadPool3() {
        try {
            ExecutorService unused = Executors.newFixedThreadPool(2, null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

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

    /**
     * unconfigurableScheduledExecutorService(null) throws NPE
     */
    public void testUnconfigurableScheduledExecutorServiceNPE() {
        try {
            ExecutorService unused =
                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 unused = Executors.callable((Runnable) null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

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

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

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

    /**
     * callable(runnable, x).toString() contains toString of wrapped task
     */
    public void testCallable_withResult_toString() {
        if (testImplementationDetails) {
            Runnable r = () -> {};
            Callable<String> c = Executors.callable(r, "");
            assertEquals(
                identityString(c) + "[Wrapped task = " + r.toString() + "]",
                c.toString());
        }
    }

    /**
     * callable(runnable).toString() contains toString of wrapped task
     */
    public void testCallable_toString() {
        if (testImplementationDetails) {
            Runnable r = () -> {};
            Callable<Object> c = Executors.callable(r);
            assertEquals(
                identityString(c) + "[Wrapped task = " + r.toString() + "]",
                c.toString());
        }
    }

    /**
     * privilegedCallable(callable).toString() contains toString of wrapped task
     */
    public void testPrivilegedCallable_toString() {
        if (testImplementationDetails) {
            Callable<String> c = () -> "";
            Callable<String> priv = Executors.privilegedCallable(c);
            assertEquals(
                identityString(priv) + "[Wrapped task = " + c.toString() + "]",
                priv.toString());
        }
    }

    /**
     * privilegedCallableUsingCurrentClassLoader(callable).toString()
     * contains toString of wrapped task
     */
    public void testPrivilegedCallableUsingCurrentClassLoader_toString() {
        if (testImplementationDetails) {
            Callable<String> c = () -> "";
            Callable<String> priv = Executors.privilegedCallableUsingCurrentClassLoader(c);
            assertEquals(
                identityString(priv) + "[Wrapped task = " + c.toString() + "]",
                priv.toString());
        }
    }
}
Revision:	1.51
Committed:	Mon Dec 16 22:55:54 2019 UTC (4 years, 4 months ago) by jsr166
Branch:	MAIN
Changes since 1.50:	+12 -10 lines
Log Message:	fix a few [UnusedVariable] warnings
#	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 unused = 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 unused = Executors.newSingleThreadExecutor(null);
101	shouldThrow();
102	} catch (NullPointerException success) {}
103	}
104
105	/**
106	* A new SingleThreadExecutor cannot be casted to concrete implementation
107	*/
108	public void testCastNewSingleThreadExecutor() {
109	final ExecutorService e = Executors.newSingleThreadExecutor();
110	try (PoolCleaner cleaner = cleaner(e)) {
111	try {
112	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
113	shouldThrow();
114	} catch (ClassCastException success) {}
115	}
116	}
117
118	/**
119	* A new newFixedThreadPool can execute runnables
120	*/
121	public void testNewFixedThreadPool1() {
122	final ExecutorService e = Executors.newFixedThreadPool(2);
123	try (PoolCleaner cleaner = cleaner(e)) {
124	e.execute(new NoOpRunnable());
125	e.execute(new NoOpRunnable());
126	e.execute(new NoOpRunnable());
127	}
128	}
129
130	/**
131	* A new newFixedThreadPool with given ThreadFactory can execute runnables
132	*/
133	public void testNewFixedThreadPool2() {
134	final ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
135	try (PoolCleaner cleaner = cleaner(e)) {
136	e.execute(new NoOpRunnable());
137	e.execute(new NoOpRunnable());
138	e.execute(new NoOpRunnable());
139	}
140	}
141
142	/**
143	* A new newFixedThreadPool with null ThreadFactory throws
144	* NullPointerException
145	*/
146	public void testNewFixedThreadPool3() {
147	try {
148	ExecutorService unused = Executors.newFixedThreadPool(2, null);
149	shouldThrow();
150	} catch (NullPointerException success) {}
151	}
152
153	/**
154	* A new newFixedThreadPool with 0 threads throws IllegalArgumentException
155	*/
156	public void testNewFixedThreadPool4() {
157	try {
158	ExecutorService unused = Executors.newFixedThreadPool(0);
159	shouldThrow();
160	} catch (IllegalArgumentException success) {}
161	}
162
163	/**
164	* 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	/**
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	/**
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	/**
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	}
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	}
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	/**
272	* Future.get on submitted tasks will time out if they compute too long.
273	*/
274	public void testTimedCallable() throws Exception {
275	final ExecutorService[] executors = {
276	Executors.newSingleThreadExecutor(),
277	Executors.newCachedThreadPool(),
278	Executors.newFixedThreadPool(2),
279	Executors.newScheduledThreadPool(2),
280	};
281
282	final Runnable sleeper = new CheckedInterruptedRunnable() {
283	public void realRun() throws InterruptedException {
284	delay(LONG_DELAY_MS);
285	}};
286
287	List<Thread> threads = new ArrayList<>();
288	for (final ExecutorService executor : executors) {
289	threads.add(newStartedThread(new CheckedRunnable() {
290	public void realRun() {
291	Future future = executor.submit(sleeper);
292	assertFutureTimesOut(future);
293	}}));
294	}
295	for (Thread thread : threads)
296	awaitTermination(thread);
297	for (ExecutorService executor : executors)
298	joinPool(executor);
299	}
300
301	/**
302	* ThreadPoolExecutor using defaultThreadFactory has
303	* specified group, priority, daemon status, and name
304	*/
305	public void testDefaultThreadFactory() throws Exception {
306	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
307	final CountDownLatch done = new CountDownLatch(1);
308	Runnable r = new CheckedRunnable() {
309	public void realRun() {
310	try {
311	Thread current = Thread.currentThread();
312	assertFalse(current.isDaemon());
313	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
314	SecurityManager s = System.getSecurityManager();
315	assertSame(current.getThreadGroup(),
316	(s == null) ? egroup : s.getThreadGroup());
317	assertTrue(current.getName().endsWith("thread-1"));
318	} catch (SecurityException ok) {
319	// Also pass if not allowed to change setting
320	}
321	done.countDown();
322	}};
323	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
324	try (PoolCleaner cleaner = cleaner(e)) {
325	e.execute(r);
326	await(done);
327	}
328	}
329
330	/**
331	* ThreadPoolExecutor using privilegedThreadFactory has
332	* specified group, priority, daemon status, name,
333	* access control context and context class loader
334	*/
335	public void testPrivilegedThreadFactory() throws Exception {
336	final CountDownLatch done = new CountDownLatch(1);
337	Runnable r = new CheckedRunnable() {
338	public void realRun() throws Exception {
339	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
340	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
341	final AccessControlContext thisacc = AccessController.getContext();
342	Runnable r = new CheckedRunnable() {
343	public void realRun() {
344	Thread current = Thread.currentThread();
345	assertFalse(current.isDaemon());
346	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
347	SecurityManager s = System.getSecurityManager();
348	assertSame(current.getThreadGroup(),
349	(s == null) ? egroup : s.getThreadGroup());
350	assertTrue(current.getName().endsWith("thread-1"));
351	assertSame(thisccl, current.getContextClassLoader());
352	assertEquals(thisacc, AccessController.getContext());
353	done.countDown();
354	}};
355	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
356	try (PoolCleaner cleaner = cleaner(e)) {
357	e.execute(r);
358	await(done);
359	}
360	}};
361
362	runWithPermissions(r,
363	new RuntimePermission("getClassLoader"),
364	new RuntimePermission("setContextClassLoader"),
365	new RuntimePermission("modifyThread"));
366	}
367
368	boolean haveCCLPermissions() {
369	SecurityManager sm = System.getSecurityManager();
370	if (sm != null) {
371	try {
372	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
373	sm.checkPermission(new RuntimePermission("getClassLoader"));
374	} catch (AccessControlException e) {
375	return false;
376	}
377	}
378	return true;
379	}
380
381	void checkCCL() {
382	SecurityManager sm = System.getSecurityManager();
383	if (sm != null) {
384	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
385	sm.checkPermission(new RuntimePermission("getClassLoader"));
386	}
387	}
388
389	class CheckCCL implements Callable<Object> {
390	public Object call() {
391	checkCCL();
392	return null;
393	}
394	}
395
396	/**
397	* Without class loader permissions, creating
398	* privilegedCallableUsingCurrentClassLoader throws ACE
399	*/
400	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
401	Runnable r = new CheckedRunnable() {
402	public void realRun() throws Exception {
403	if (System.getSecurityManager() == null)
404	return;
405	try {
406	Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
407	shouldThrow();
408	} catch (AccessControlException success) {}
409	}};
410
411	runWithoutPermissions(r);
412	}
413
414	/**
415	* With class loader permissions, calling
416	* privilegedCallableUsingCurrentClassLoader does not throw ACE
417	*/
418	public void testPrivilegedCallableUsingCCLWithPrivs() throws Exception {
419	Runnable r = new CheckedRunnable() {
420	public void realRun() throws Exception {
421	Executors.privilegedCallableUsingCurrentClassLoader
422	(new NoOpCallable())
423	.call();
424	}};
425
426	runWithPermissions(r,
427	new RuntimePermission("getClassLoader"),
428	new RuntimePermission("setContextClassLoader"));
429	}
430
431	/**
432	* Without permissions, calling privilegedCallable throws ACE
433	*/
434	public void testPrivilegedCallableWithNoPrivs() throws Exception {
435	// Avoid classloader-related SecurityExceptions in swingui.TestRunner
436	Executors.privilegedCallable(new CheckCCL());
437
438	Runnable r = new CheckedRunnable() {
439	public void realRun() throws Exception {
440	if (System.getSecurityManager() == null)
441	return;
442	Callable task = Executors.privilegedCallable(new CheckCCL());
443	try {
444	task.call();
445	shouldThrow();
446	} catch (AccessControlException success) {}
447	}};
448
449	runWithoutPermissions(r);
450
451	// It seems rather difficult to test that the
452	// AccessControlContext of the privilegedCallable is used
453	// instead of its caller. Below is a failed attempt to do
454	// that, which does not work because the AccessController
455	// cannot capture the internal state of the current Policy.
456	// It would be much more work to differentiate based on,
457	// e.g. CodeSource.
458
459	// final AccessControlContext[] noprivAcc = new AccessControlContext[1];
460	// final Callable[] task = new Callable[1];
461
462	// runWithPermissions
463	// (new CheckedRunnable() {
464	// public void realRun() {
465	// if (System.getSecurityManager() == null)
466	// return;
467	// noprivAcc[0] = AccessController.getContext();
468	// task[0] = Executors.privilegedCallable(new CheckCCL());
469	// try {
470	// AccessController.doPrivileged(new PrivilegedAction<Void>() {
471	// public Void run() {
472	// checkCCL();
473	// return null;
474	// }}, noprivAcc[0]);
475	// shouldThrow();
476	// } catch (AccessControlException success) {}
477	// }});
478
479	// runWithPermissions
480	// (new CheckedRunnable() {
481	// public void realRun() throws Exception {
482	// if (System.getSecurityManager() == null)
483	// return;
484	// // Verify that we have an underprivileged ACC
485	// try {
486	// AccessController.doPrivileged(new PrivilegedAction<Void>() {
487	// public Void run() {
488	// checkCCL();
489	// return null;
490	// }}, noprivAcc[0]);
491	// shouldThrow();
492	// } catch (AccessControlException success) {}
493
494	// try {
495	// task[0].call();
496	// shouldThrow();
497	// } catch (AccessControlException success) {}
498	// }},
499	// new RuntimePermission("getClassLoader"),
500	// new RuntimePermission("setContextClassLoader"));
501	}
502
503	/**
504	* With permissions, calling privilegedCallable succeeds
505	*/
506	public void testPrivilegedCallableWithPrivs() throws Exception {
507	Runnable r = new CheckedRunnable() {
508	public void realRun() throws Exception {
509	Executors.privilegedCallable(new CheckCCL()).call();
510	}};
511
512	runWithPermissions(r,
513	new RuntimePermission("getClassLoader"),
514	new RuntimePermission("setContextClassLoader"));
515	}
516
517	/**
518	* callable(Runnable) returns null when called
519	*/
520	public void testCallable1() throws Exception {
521	Callable c = Executors.callable(new NoOpRunnable());
522	assertNull(c.call());
523	}
524
525	/**
526	* callable(Runnable, result) returns result when called
527	*/
528	public void testCallable2() throws Exception {
529	Callable c = Executors.callable(new NoOpRunnable(), one);
530	assertSame(one, c.call());
531	}
532
533	/**
534	* callable(PrivilegedAction) returns its result when called
535	*/
536	public void testCallable3() throws Exception {
537	Callable c = Executors.callable(new PrivilegedAction() {
538	public Object run() { return one; }});
539	assertSame(one, c.call());
540	}
541
542	/**
543	* callable(PrivilegedExceptionAction) returns its result when called
544	*/
545	public void testCallable4() throws Exception {
546	Callable c = Executors.callable(new PrivilegedExceptionAction() {
547	public Object run() { return one; }});
548	assertSame(one, c.call());
549	}
550
551	/**
552	* callable(null Runnable) throws NPE
553	*/
554	public void testCallableNPE1() {
555	try {
556	Callable unused = Executors.callable((Runnable) null);
557	shouldThrow();
558	} catch (NullPointerException success) {}
559	}
560
561	/**
562	* callable(null, result) throws NPE
563	*/
564	public void testCallableNPE2() {
565	try {
566	Callable unused = Executors.callable((Runnable) null, one);
567	shouldThrow();
568	} catch (NullPointerException success) {}
569	}
570
571	/**
572	* callable(null PrivilegedAction) throws NPE
573	*/
574	public void testCallableNPE3() {
575	try {
576	Callable unused = Executors.callable((PrivilegedAction) null);
577	shouldThrow();
578	} catch (NullPointerException success) {}
579	}
580
581	/**
582	* callable(null PrivilegedExceptionAction) throws NPE
583	*/
584	public void testCallableNPE4() {
585	try {
586	Callable unused = Executors.callable((PrivilegedExceptionAction) null);
587	shouldThrow();
588	} catch (NullPointerException success) {}
589	}
590
591	/**
592	* callable(runnable, x).toString() contains toString of wrapped task
593	*/
594	public void testCallable_withResult_toString() {
595	if (testImplementationDetails) {
596	Runnable r = () -> {};
597	Callable<String> c = Executors.callable(r, "");
598	assertEquals(
599	identityString(c) + "[Wrapped task = " + r.toString() + "]",
600	c.toString());
601	}
602	}
603
604	/**
605	* callable(runnable).toString() contains toString of wrapped task
606	*/
607	public void testCallable_toString() {
608	if (testImplementationDetails) {
609	Runnable r = () -> {};
610	Callable<Object> c = Executors.callable(r);
611	assertEquals(
612	identityString(c) + "[Wrapped task = " + r.toString() + "]",
613	c.toString());
614	}
615	}
616
617	/**
618	* privilegedCallable(callable).toString() contains toString of wrapped task
619	*/
620	public void testPrivilegedCallable_toString() {
621	if (testImplementationDetails) {
622	Callable<String> c = () -> "";
623	Callable<String> priv = Executors.privilegedCallable(c);
624	assertEquals(
625	identityString(priv) + "[Wrapped task = " + c.toString() + "]",
626	priv.toString());
627	}
628	}
629
630	/**
631	* privilegedCallableUsingCurrentClassLoader(callable).toString()
632	* contains toString of wrapped task
633	*/
634	public void testPrivilegedCallableUsingCurrentClassLoader_toString() {
635	if (testImplementationDetails) {
636	Callable<String> c = () -> "";
637	Callable<String> priv = Executors.privilegedCallableUsingCurrentClassLoader(c);
638	assertEquals(
639	identityString(priv) + "[Wrapped task = " + c.toString() + "]",
640	priv.toString());
641	}
642	}
643	}