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

    /**
     * A new newFixedThreadPool with 0 threads throws IllegalArgumentException
     */
    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) {}
    }

    /**
     * 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:	1.50
Committed:	Wed Aug 16 17:18:34 2017 UTC (6 years, 8 months ago) by jsr166
Branch:	MAIN
Changes since 1.49:	+52 -0 lines
Log Message:	8186265: Make toString() methods of "task" objects more useful
#	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
144	* NullPointerException
145	*/
146	public void testNewFixedThreadPool3() {
147	try {
148	ExecutorService e = 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 e = 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 e = Executors.unconfigurableExecutorService(null);
181	shouldThrow();
182	} catch (NullPointerException success) {}
183	}
184
185	/**
186	* unconfigurableScheduledExecutorService(null) throws NPE
187	*/
188	public void testUnconfigurableScheduledExecutorServiceNPE() {
189	try {
190	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
191	shouldThrow();
192	} catch (NullPointerException success) {}
193	}
194
195	/**
196	* a newSingleThreadScheduledExecutor successfully runs delayed task
197	*/
198	public void testNewSingleThreadScheduledExecutor() throws Exception {
199	final ScheduledExecutorService p = Executors.newSingleThreadScheduledExecutor();
200	try (PoolCleaner cleaner = cleaner(p)) {
201	final CountDownLatch proceed = new CountDownLatch(1);
202	final Runnable task = new CheckedRunnable() {
203	public void realRun() {
204	await(proceed);
205	}};
206	long startTime = System.nanoTime();
207	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
208	timeoutMillis(), MILLISECONDS);
209	assertFalse(f.isDone());
210	proceed.countDown();
211	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
212	assertSame(Boolean.TRUE, f.get());
213	assertTrue(f.isDone());
214	assertFalse(f.isCancelled());
215	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
216	}
217	}
218
219	/**
220	* a newScheduledThreadPool successfully runs delayed task
221	*/
222	public void testNewScheduledThreadPool() throws Exception {
223	final ScheduledExecutorService p = Executors.newScheduledThreadPool(2);
224	try (PoolCleaner cleaner = cleaner(p)) {
225	final CountDownLatch proceed = new CountDownLatch(1);
226	final Runnable task = new CheckedRunnable() {
227	public void realRun() {
228	await(proceed);
229	}};
230	long startTime = System.nanoTime();
231	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
232	timeoutMillis(), MILLISECONDS);
233	assertFalse(f.isDone());
234	proceed.countDown();
235	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
236	assertSame(Boolean.TRUE, f.get());
237	assertTrue(f.isDone());
238	assertFalse(f.isCancelled());
239	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
240	}
241	}
242
243	/**
244	* an unconfigurable newScheduledThreadPool successfully runs delayed task
245	*/
246	public void testUnconfigurableScheduledExecutorService() throws Exception {
247	final ScheduledExecutorService p =
248	Executors.unconfigurableScheduledExecutorService
249	(Executors.newScheduledThreadPool(2));
250	try (PoolCleaner cleaner = cleaner(p)) {
251	final CountDownLatch proceed = new CountDownLatch(1);
252	final Runnable task = new CheckedRunnable() {
253	public void realRun() {
254	await(proceed);
255	}};
256	long startTime = System.nanoTime();
257	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
258	timeoutMillis(), MILLISECONDS);
259	assertFalse(f.isDone());
260	proceed.countDown();
261	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
262	assertSame(Boolean.TRUE, f.get());
263	assertTrue(f.isDone());
264	assertFalse(f.isCancelled());
265	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
266	}
267	}
268
269	/**
270	* Future.get on submitted tasks will time out if they compute too long.
271	*/
272	public void testTimedCallable() throws Exception {
273	final ExecutorService[] executors = {
274	Executors.newSingleThreadExecutor(),
275	Executors.newCachedThreadPool(),
276	Executors.newFixedThreadPool(2),
277	Executors.newScheduledThreadPool(2),
278	};
279
280	final Runnable sleeper = new CheckedInterruptedRunnable() {
281	public void realRun() throws InterruptedException {
282	delay(LONG_DELAY_MS);
283	}};
284
285	List<Thread> threads = new ArrayList<>();
286	for (final ExecutorService executor : executors) {
287	threads.add(newStartedThread(new CheckedRunnable() {
288	public void realRun() {
289	Future future = executor.submit(sleeper);
290	assertFutureTimesOut(future);
291	}}));
292	}
293	for (Thread thread : threads)
294	awaitTermination(thread);
295	for (ExecutorService executor : executors)
296	joinPool(executor);
297	}
298
299	/**
300	* ThreadPoolExecutor using defaultThreadFactory has
301	* specified group, priority, daemon status, and name
302	*/
303	public void testDefaultThreadFactory() throws Exception {
304	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
305	final CountDownLatch done = new CountDownLatch(1);
306	Runnable r = new CheckedRunnable() {
307	public void realRun() {
308	try {
309	Thread current = Thread.currentThread();
310	assertFalse(current.isDaemon());
311	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
312	SecurityManager s = System.getSecurityManager();
313	assertSame(current.getThreadGroup(),
314	(s == null) ? egroup : s.getThreadGroup());
315	assertTrue(current.getName().endsWith("thread-1"));
316	} catch (SecurityException ok) {
317	// Also pass if not allowed to change setting
318	}
319	done.countDown();
320	}};
321	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
322	try (PoolCleaner cleaner = cleaner(e)) {
323	e.execute(r);
324	await(done);
325	}
326	}
327
328	/**
329	* ThreadPoolExecutor using privilegedThreadFactory has
330	* specified group, priority, daemon status, name,
331	* access control context and context class loader
332	*/
333	public void testPrivilegedThreadFactory() throws Exception {
334	final CountDownLatch done = new CountDownLatch(1);
335	Runnable r = new CheckedRunnable() {
336	public void realRun() throws Exception {
337	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
338	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
339	final AccessControlContext thisacc = AccessController.getContext();
340	Runnable r = new CheckedRunnable() {
341	public void realRun() {
342	Thread current = Thread.currentThread();
343	assertFalse(current.isDaemon());
344	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
345	SecurityManager s = System.getSecurityManager();
346	assertSame(current.getThreadGroup(),
347	(s == null) ? egroup : s.getThreadGroup());
348	assertTrue(current.getName().endsWith("thread-1"));
349	assertSame(thisccl, current.getContextClassLoader());
350	assertEquals(thisacc, AccessController.getContext());
351	done.countDown();
352	}};
353	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
354	try (PoolCleaner cleaner = cleaner(e)) {
355	e.execute(r);
356	await(done);
357	}
358	}};
359
360	runWithPermissions(r,
361	new RuntimePermission("getClassLoader"),
362	new RuntimePermission("setContextClassLoader"),
363	new RuntimePermission("modifyThread"));
364	}
365
366	boolean haveCCLPermissions() {
367	SecurityManager sm = System.getSecurityManager();
368	if (sm != null) {
369	try {
370	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
371	sm.checkPermission(new RuntimePermission("getClassLoader"));
372	} catch (AccessControlException e) {
373	return false;
374	}
375	}
376	return true;
377	}
378
379	void checkCCL() {
380	SecurityManager sm = System.getSecurityManager();
381	if (sm != null) {
382	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
383	sm.checkPermission(new RuntimePermission("getClassLoader"));
384	}
385	}
386
387	class CheckCCL implements Callable<Object> {
388	public Object call() {
389	checkCCL();
390	return null;
391	}
392	}
393
394	/**
395	* Without class loader permissions, creating
396	* privilegedCallableUsingCurrentClassLoader throws ACE
397	*/
398	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
399	Runnable r = new CheckedRunnable() {
400	public void realRun() throws Exception {
401	if (System.getSecurityManager() == null)
402	return;
403	try {
404	Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
405	shouldThrow();
406	} catch (AccessControlException success) {}
407	}};
408
409	runWithoutPermissions(r);
410	}
411
412	/**
413	* With class loader permissions, calling
414	* privilegedCallableUsingCurrentClassLoader does not throw ACE
415	*/
416	public void testPrivilegedCallableUsingCCLWithPrivs() throws Exception {
417	Runnable r = new CheckedRunnable() {
418	public void realRun() throws Exception {
419	Executors.privilegedCallableUsingCurrentClassLoader
420	(new NoOpCallable())
421	.call();
422	}};
423
424	runWithPermissions(r,
425	new RuntimePermission("getClassLoader"),
426	new RuntimePermission("setContextClassLoader"));
427	}
428
429	/**
430	* Without permissions, calling privilegedCallable throws ACE
431	*/
432	public void testPrivilegedCallableWithNoPrivs() throws Exception {
433	// Avoid classloader-related SecurityExceptions in swingui.TestRunner
434	Executors.privilegedCallable(new CheckCCL());
435
436	Runnable r = new CheckedRunnable() {
437	public void realRun() throws Exception {
438	if (System.getSecurityManager() == null)
439	return;
440	Callable task = Executors.privilegedCallable(new CheckCCL());
441	try {
442	task.call();
443	shouldThrow();
444	} catch (AccessControlException success) {}
445	}};
446
447	runWithoutPermissions(r);
448
449	// It seems rather difficult to test that the
450	// AccessControlContext of the privilegedCallable is used
451	// instead of its caller. Below is a failed attempt to do
452	// that, which does not work because the AccessController
453	// cannot capture the internal state of the current Policy.
454	// It would be much more work to differentiate based on,
455	// e.g. CodeSource.
456
457	// final AccessControlContext[] noprivAcc = new AccessControlContext[1];
458	// final Callable[] task = new Callable[1];
459
460	// runWithPermissions
461	// (new CheckedRunnable() {
462	// public void realRun() {
463	// if (System.getSecurityManager() == null)
464	// return;
465	// noprivAcc[0] = AccessController.getContext();
466	// task[0] = Executors.privilegedCallable(new CheckCCL());
467	// try {
468	// AccessController.doPrivileged(new PrivilegedAction<Void>() {
469	// public Void run() {
470	// checkCCL();
471	// return null;
472	// }}, noprivAcc[0]);
473	// shouldThrow();
474	// } catch (AccessControlException success) {}
475	// }});
476
477	// runWithPermissions
478	// (new CheckedRunnable() {
479	// public void realRun() throws Exception {
480	// if (System.getSecurityManager() == null)
481	// return;
482	// // Verify that we have an underprivileged ACC
483	// try {
484	// AccessController.doPrivileged(new PrivilegedAction<Void>() {
485	// public Void run() {
486	// checkCCL();
487	// return null;
488	// }}, noprivAcc[0]);
489	// shouldThrow();
490	// } catch (AccessControlException success) {}
491
492	// try {
493	// task[0].call();
494	// shouldThrow();
495	// } catch (AccessControlException success) {}
496	// }},
497	// new RuntimePermission("getClassLoader"),
498	// new RuntimePermission("setContextClassLoader"));
499	}
500
501	/**
502	* With permissions, calling privilegedCallable succeeds
503	*/
504	public void testPrivilegedCallableWithPrivs() throws Exception {
505	Runnable r = new CheckedRunnable() {
506	public void realRun() throws Exception {
507	Executors.privilegedCallable(new CheckCCL()).call();
508	}};
509
510	runWithPermissions(r,
511	new RuntimePermission("getClassLoader"),
512	new RuntimePermission("setContextClassLoader"));
513	}
514
515	/**
516	* callable(Runnable) returns null when called
517	*/
518	public void testCallable1() throws Exception {
519	Callable c = Executors.callable(new NoOpRunnable());
520	assertNull(c.call());
521	}
522
523	/**
524	* callable(Runnable, result) returns result when called
525	*/
526	public void testCallable2() throws Exception {
527	Callable c = Executors.callable(new NoOpRunnable(), one);
528	assertSame(one, c.call());
529	}
530
531	/**
532	* callable(PrivilegedAction) returns its result when called
533	*/
534	public void testCallable3() throws Exception {
535	Callable c = Executors.callable(new PrivilegedAction() {
536	public Object run() { return one; }});
537	assertSame(one, c.call());
538	}
539
540	/**
541	* callable(PrivilegedExceptionAction) returns its result when called
542	*/
543	public void testCallable4() throws Exception {
544	Callable c = Executors.callable(new PrivilegedExceptionAction() {
545	public Object run() { return one; }});
546	assertSame(one, c.call());
547	}
548
549	/**
550	* callable(null Runnable) throws NPE
551	*/
552	public void testCallableNPE1() {
553	try {
554	Callable c = Executors.callable((Runnable) null);
555	shouldThrow();
556	} catch (NullPointerException success) {}
557	}
558
559	/**
560	* callable(null, result) throws NPE
561	*/
562	public void testCallableNPE2() {
563	try {
564	Callable c = Executors.callable((Runnable) null, one);
565	shouldThrow();
566	} catch (NullPointerException success) {}
567	}
568
569	/**
570	* callable(null PrivilegedAction) throws NPE
571	*/
572	public void testCallableNPE3() {
573	try {
574	Callable c = Executors.callable((PrivilegedAction) null);
575	shouldThrow();
576	} catch (NullPointerException success) {}
577	}
578
579	/**
580	* callable(null PrivilegedExceptionAction) throws NPE
581	*/
582	public void testCallableNPE4() {
583	try {
584	Callable c = Executors.callable((PrivilegedExceptionAction) null);
585	shouldThrow();
586	} catch (NullPointerException success) {}
587	}
588
589	/**
590	* callable(runnable, x).toString() contains toString of wrapped task
591	*/
592	public void testCallable_withResult_toString() {
593	if (testImplementationDetails) {
594	Runnable r = () -> {};
595	Callable<String> c = Executors.callable(r, "");
596	assertEquals(
597	identityString(c) + "[Wrapped task = " + r.toString() + "]",
598	c.toString());
599	}
600	}
601
602	/**
603	* callable(runnable).toString() contains toString of wrapped task
604	*/
605	public void testCallable_toString() {
606	if (testImplementationDetails) {
607	Runnable r = () -> {};
608	Callable<Object> c = Executors.callable(r);
609	assertEquals(
610	identityString(c) + "[Wrapped task = " + r.toString() + "]",
611	c.toString());
612	}
613	}
614
615	/**
616	* privilegedCallable(callable).toString() contains toString of wrapped task
617	*/
618	public void testPrivilegedCallable_toString() {
619	if (testImplementationDetails) {
620	Callable<String> c = () -> "";
621	Callable<String> priv = Executors.privilegedCallable(c);
622	assertEquals(
623	identityString(priv) + "[Wrapped task = " + c.toString() + "]",
624	priv.toString());
625	}
626	}
627
628	/**
629	* privilegedCallableUsingCurrentClassLoader(callable).toString()
630	* contains toString of wrapped task
631	*/
632	public void testPrivilegedCallableUsingCurrentClassLoader_toString() {
633	if (testImplementationDetails) {
634	Callable<String> c = () -> "";
635	Callable<String> priv = Executors.privilegedCallableUsingCurrentClassLoader(c);
636	assertEquals(
637	identityString(priv) + "[Wrapped task = " + c.toString() + "]",
638	priv.toString());
639	}
640	}
641	}