test/tck/ExecutorsTest.java

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


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

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

    static class TimedCallable<T> implements Callable<T> {
        private final ExecutorService exec;
        private final Callable<T> func;
        private final long msecs;

        TimedCallable(ExecutorService exec, Callable<T> func, long msecs) {
            this.exec = exec;
            this.func = func;
            this.msecs = msecs;
        }

        public T call() throws Exception {
            Future<T> ftask = exec.submit(func);
            try {
                return ftask.get(msecs, MILLISECONDS);
            } finally {
                ftask.cancel(true);
            }
        }
    }


    private static class Fib implements Callable<BigInteger> {
        private final BigInteger n;
        Fib(long n) {
            if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
            this.n = BigInteger.valueOf(n);
        }
        public BigInteger call() {
            BigInteger f1 = BigInteger.ONE;
            BigInteger f2 = f1;
            for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
                BigInteger t = f1.add(f2);
                f1 = f2;
                f2 = t;
            }
            return f1;
        }
    };

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

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

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


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

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

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

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


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

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

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

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


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

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

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


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

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

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

    /**
     *  timeouts from execute will time out if they compute too long.
     */
    public void testTimedCallable() throws Exception {
        int N = 10000;
        ExecutorService executor = Executors.newSingleThreadExecutor();
        List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
        try {
            long startTime = System.currentTimeMillis();

            long i = 0;
            while (tasks.size() < N) {
                tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
                i += 10;
            }

            int iters = 0;
            BigInteger sum = BigInteger.ZERO;
            for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
                try {
                    ++iters;
                    sum = sum.add(it.next().call());
                }
                catch (TimeoutException success) {
                    assertTrue(iters > 0);
                    return;
                }
            }
            // if by chance we didn't ever time out, total time must be small
            long elapsed = System.currentTimeMillis() - startTime;
            assertTrue(elapsed < N);
        }
        finally {
            joinPool(executor);
        }
    }


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

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

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

    /**
     * ThreadPoolExecutor using privilegedThreadFactory has
     * specified group, priority, daemon status, name,
     * access control context and context class loader
     */
    public void testPrivilegedThreadFactory() throws Exception {
        Policy savedPolicy = null;
        try {
            savedPolicy = Policy.getPolicy();
            AdjustablePolicy policy = new AdjustablePolicy();
            policy.addPermission(new RuntimePermission("getContextClassLoader"));
            policy.addPermission(new RuntimePermission("setContextClassLoader"));
            Policy.setPolicy(policy);
        } catch (AccessControlException ok) {
            return;
        }
        final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
        final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
        final AccessControlContext thisacc = AccessController.getContext();
        Runnable r = new Runnable() {
                public void run() {
                    try {
                        Thread current = Thread.currentThread();
                        threadAssertTrue(!current.isDaemon());
                        threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
                        ThreadGroup g = current.getThreadGroup();
                        SecurityManager s = System.getSecurityManager();
                        if (s != null)
                            threadAssertTrue(g == s.getThreadGroup());
                        else
                            threadAssertTrue(g == egroup);
                        String name = current.getName();
                        threadAssertTrue(name.endsWith("thread-1"));
                        threadAssertTrue(thisccl == current.getContextClassLoader());
                        threadAssertTrue(thisacc.equals(AccessController.getContext()));
                    } catch (SecurityException ok) {
                        // Also pass if not allowed to change settings
                    }
                }
            };
        ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());

        Policy.setPolicy(savedPolicy);
        e.execute(r);
        try {
            e.shutdown();
        } catch (SecurityException ok) {
        }
        try {
            Thread.sleep(SHORT_DELAY_MS);
        } finally {
            joinPool(e);
        }
    }

    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() {
        Policy savedPolicy = null;
        try {
            savedPolicy = Policy.getPolicy();
            AdjustablePolicy policy = new AdjustablePolicy();
            Policy.setPolicy(policy);
        } catch (AccessControlException ok) {
            return;
        }

        // Check if program still has too many permissions to run test
        try {
            checkCCL();
            // too many privileges to test; so return
            Policy.setPolicy(savedPolicy);
            return;
        } catch (AccessControlException ok) {
        }

        try {
            Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
            shouldThrow();
        } catch (AccessControlException success) {
        } finally {
            Policy.setPolicy(savedPolicy);
        }
    }

    /**
     * With class loader permissions, calling
     * privilegedCallableUsingCurrentClassLoader does not throw ACE
     */
    public void testprivilegedCallableUsingCCLWithPrivs() throws Exception {
        Policy savedPolicy = null;
        try {
            savedPolicy = Policy.getPolicy();
            AdjustablePolicy policy = new AdjustablePolicy();
            policy.addPermission(new RuntimePermission("getContextClassLoader"));
            policy.addPermission(new RuntimePermission("setContextClassLoader"));
            Policy.setPolicy(policy);
        } catch (AccessControlException ok) {
            return;
        }

        try {
            Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
            task.call();
        }
        finally {
            Policy.setPolicy(savedPolicy);
        }
    }

    /**
     * Without permissions, calling privilegedCallable throws ACE
     */
    public void testprivilegedCallableWithNoPrivs() throws Exception {
        Callable task;
        Policy savedPolicy = null;
        AdjustablePolicy policy = null;
        AccessControlContext noprivAcc = null;
        try {
            savedPolicy = Policy.getPolicy();
            policy = new AdjustablePolicy();
            Policy.setPolicy(policy);
            noprivAcc = AccessController.getContext();
            task = Executors.privilegedCallable(new CheckCCL());
            Policy.setPolicy(savedPolicy);
        } catch (AccessControlException ok) {
            return; // program has too few permissions to set up test
        }

        // Make sure that program doesn't have too many permissions
        try {
            AccessController.doPrivileged(new PrivilegedAction() {
                    public Object run() {
                        checkCCL();
                        return null;
                    }}, noprivAcc);
            // too many permssions; skip test
            return;
        } catch (AccessControlException ok) {
        }

        try {
            task.call();
            shouldThrow();
        } catch (AccessControlException success) {}
    }

    /**
     * With permissions, calling privilegedCallable succeeds
     */
    public void testprivilegedCallableWithPrivs() throws Exception {
        Policy savedPolicy = null;
        try {
            savedPolicy = Policy.getPolicy();
            AdjustablePolicy policy = new AdjustablePolicy();
            policy.addPermission(new RuntimePermission("getContextClassLoader"));
            policy.addPermission(new RuntimePermission("setContextClassLoader"));
            Policy.setPolicy(policy);
        } catch (AccessControlException ok) {
            return;
        }

        Callable task = Executors.privilegedCallable(new CheckCCL());
        try {
            task.call();
        } finally {
            Policy.setPolicy(savedPolicy);
        }
    }

    /**
     * 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:	1.27
Committed:	Tue Dec 1 09:56:28 2009 UTC (14 years, 5 months ago) by jsr166
Branch:	MAIN
Changes since 1.26:	+3 -4 lines
Log Message:	use stricter assertions, e.g. assertSame
#	Content
1	/*
2	* Written by Doug Lea with assistance from members of JCP JSR-166
3	* Expert Group and released to the public domain, as explained at
4	* http://creativecommons.org/licenses/publicdomain
5	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	* Pat Fisher, Mike Judd.
7	*/
8
9
10	import junit.framework.*;
11	import java.util.*;
12	import java.util.concurrent.*;
13	import static java.util.concurrent.TimeUnit.MILLISECONDS;
14	import java.math.BigInteger;
15	import java.security.*;
16
17	public class ExecutorsTest extends JSR166TestCase {
18	public static void main(String[] args) {
19	junit.textui.TestRunner.run (suite());
20	}
21	public static Test suite() {
22	return new TestSuite(ExecutorsTest.class);
23	}
24
25	static class TimedCallable<T> implements Callable<T> {
26	private final ExecutorService exec;
27	private final Callable<T> func;
28	private final long msecs;
29
30	TimedCallable(ExecutorService exec, Callable<T> func, long msecs) {
31	this.exec = exec;
32	this.func = func;
33	this.msecs = msecs;
34	}
35
36	public T call() throws Exception {
37	Future<T> ftask = exec.submit(func);
38	try {
39	return ftask.get(msecs, MILLISECONDS);
40	} finally {
41	ftask.cancel(true);
42	}
43	}
44	}
45
46
47	private static class Fib implements Callable<BigInteger> {
48	private final BigInteger n;
49	Fib(long n) {
50	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
51	this.n = BigInteger.valueOf(n);
52	}
53	public BigInteger call() {
54	BigInteger f1 = BigInteger.ONE;
55	BigInteger f2 = f1;
56	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
57	BigInteger t = f1.add(f2);
58	f1 = f2;
59	f2 = t;
60	}
61	return f1;
62	}
63	};
64
65	/**
66	* A newCachedThreadPool can execute runnables
67	*/
68	public void testNewCachedThreadPool1() {
69	ExecutorService e = Executors.newCachedThreadPool();
70	e.execute(new NoOpRunnable());
71	e.execute(new NoOpRunnable());
72	e.execute(new NoOpRunnable());
73	joinPool(e);
74	}
75
76	/**
77	* A newCachedThreadPool with given ThreadFactory can execute runnables
78	*/
79	public void testNewCachedThreadPool2() {
80	ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
81	e.execute(new NoOpRunnable());
82	e.execute(new NoOpRunnable());
83	e.execute(new NoOpRunnable());
84	joinPool(e);
85	}
86
87	/**
88	* A newCachedThreadPool with null ThreadFactory throws NPE
89	*/
90	public void testNewCachedThreadPool3() {
91	try {
92	ExecutorService e = Executors.newCachedThreadPool(null);
93	shouldThrow();
94	} catch (NullPointerException success) {}
95	}
96
97
98	/**
99	* A new SingleThreadExecutor can execute runnables
100	*/
101	public void testNewSingleThreadExecutor1() {
102	ExecutorService e = Executors.newSingleThreadExecutor();
103	e.execute(new NoOpRunnable());
104	e.execute(new NoOpRunnable());
105	e.execute(new NoOpRunnable());
106	joinPool(e);
107	}
108
109	/**
110	* A new SingleThreadExecutor with given ThreadFactory can execute runnables
111	*/
112	public void testNewSingleThreadExecutor2() {
113	ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
114	e.execute(new NoOpRunnable());
115	e.execute(new NoOpRunnable());
116	e.execute(new NoOpRunnable());
117	joinPool(e);
118	}
119
120	/**
121	* A new SingleThreadExecutor with null ThreadFactory throws NPE
122	*/
123	public void testNewSingleThreadExecutor3() {
124	try {
125	ExecutorService e = Executors.newSingleThreadExecutor(null);
126	shouldThrow();
127	} catch (NullPointerException success) {}
128	}
129
130	/**
131	* A new SingleThreadExecutor cannot be casted to concrete implementation
132	*/
133	public void testCastNewSingleThreadExecutor() {
134	ExecutorService e = Executors.newSingleThreadExecutor();
135	try {
136	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
137	shouldThrow();
138	} catch (ClassCastException success) {
139	} finally {
140	joinPool(e);
141	}
142	}
143
144
145	/**
146	* A new newFixedThreadPool can execute runnables
147	*/
148	public void testNewFixedThreadPool1() {
149	ExecutorService e = Executors.newFixedThreadPool(2);
150	e.execute(new NoOpRunnable());
151	e.execute(new NoOpRunnable());
152	e.execute(new NoOpRunnable());
153	joinPool(e);
154	}
155
156	/**
157	* A new newFixedThreadPool with given ThreadFactory can execute runnables
158	*/
159	public void testNewFixedThreadPool2() {
160	ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
161	e.execute(new NoOpRunnable());
162	e.execute(new NoOpRunnable());
163	e.execute(new NoOpRunnable());
164	joinPool(e);
165	}
166
167	/**
168	* A new newFixedThreadPool with null ThreadFactory throws NPE
169	*/
170	public void testNewFixedThreadPool3() {
171	try {
172	ExecutorService e = Executors.newFixedThreadPool(2, null);
173	shouldThrow();
174	} catch (NullPointerException success) {}
175	}
176
177	/**
178	* A new newFixedThreadPool with 0 threads throws IAE
179	*/
180	public void testNewFixedThreadPool4() {
181	try {
182	ExecutorService e = Executors.newFixedThreadPool(0);
183	shouldThrow();
184	} catch (IllegalArgumentException success) {}
185	}
186
187
188	/**
189	* An unconfigurable newFixedThreadPool can execute runnables
190	*/
191	public void testunconfigurableExecutorService() {
192	ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
193	e.execute(new NoOpRunnable());
194	e.execute(new NoOpRunnable());
195	e.execute(new NoOpRunnable());
196	joinPool(e);
197	}
198
199	/**
200	* unconfigurableExecutorService(null) throws NPE
201	*/
202	public void testunconfigurableExecutorServiceNPE() {
203	try {
204	ExecutorService e = Executors.unconfigurableExecutorService(null);
205	shouldThrow();
206	} catch (NullPointerException success) {}
207	}
208
209	/**
210	* unconfigurableScheduledExecutorService(null) throws NPE
211	*/
212	public void testunconfigurableScheduledExecutorServiceNPE() {
213	try {
214	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
215	shouldThrow();
216	} catch (NullPointerException success) {}
217	}
218
219
220	/**
221	* a newSingleThreadScheduledExecutor successfully runs delayed task
222	*/
223	public void testNewSingleThreadScheduledExecutor() throws Exception {
224	TrackedCallable callable = new TrackedCallable();
225	ScheduledExecutorService p1 = Executors.newSingleThreadScheduledExecutor();
226	Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
227	assertFalse(callable.done);
228	Thread.sleep(MEDIUM_DELAY_MS);
229	assertTrue(callable.done);
230	assertEquals(Boolean.TRUE, f.get());
231	joinPool(p1);
232	}
233
234	/**
235	* a newScheduledThreadPool successfully runs delayed task
236	*/
237	public void testnewScheduledThreadPool() throws Exception {
238	TrackedCallable callable = new TrackedCallable();
239	ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2);
240	Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
241	assertFalse(callable.done);
242	Thread.sleep(MEDIUM_DELAY_MS);
243	assertTrue(callable.done);
244	assertEquals(Boolean.TRUE, f.get());
245	joinPool(p1);
246	}
247
248	/**
249	* an unconfigurable newScheduledThreadPool successfully runs delayed task
250	*/
251	public void testunconfigurableScheduledExecutorService() throws Exception {
252	TrackedCallable callable = new TrackedCallable();
253	ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2));
254	Future f = p1.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
255	assertFalse(callable.done);
256	Thread.sleep(MEDIUM_DELAY_MS);
257	assertTrue(callable.done);
258	assertEquals(Boolean.TRUE, f.get());
259	joinPool(p1);
260	}
261
262	/**
263	* timeouts from execute will time out if they compute too long.
264	*/
265	public void testTimedCallable() throws Exception {
266	int N = 10000;
267	ExecutorService executor = Executors.newSingleThreadExecutor();
268	List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
269	try {
270	long startTime = System.currentTimeMillis();
271
272	long i = 0;
273	while (tasks.size() < N) {
274	tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
275	i += 10;
276	}
277
278	int iters = 0;
279	BigInteger sum = BigInteger.ZERO;
280	for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
281	try {
282	++iters;
283	sum = sum.add(it.next().call());
284	}
285	catch (TimeoutException success) {
286	assertTrue(iters > 0);
287	return;
288	}
289	}
290	// if by chance we didn't ever time out, total time must be small
291	long elapsed = System.currentTimeMillis() - startTime;
292	assertTrue(elapsed < N);
293	}
294	finally {
295	joinPool(executor);
296	}
297	}
298
299
300	/**
301	* ThreadPoolExecutor using defaultThreadFactory has
302	* specified group, priority, daemon status, and name
303	*/
304	public void testDefaultThreadFactory() throws Exception {
305	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
306	Runnable r = new Runnable() {
307	public void run() {
308	try {
309	Thread current = Thread.currentThread();
310	threadAssertTrue(!current.isDaemon());
311	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
312	ThreadGroup g = current.getThreadGroup();
313	SecurityManager s = System.getSecurityManager();
314	if (s != null)
315	threadAssertTrue(g == s.getThreadGroup());
316	else
317	threadAssertTrue(g == egroup);
318	String name = current.getName();
319	threadAssertTrue(name.endsWith("thread-1"));
320	} catch (SecurityException ok) {
321	// Also pass if not allowed to change setting
322	}
323	}
324	};
325	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
326
327	e.execute(r);
328	try {
329	e.shutdown();
330	} catch (SecurityException ok) {
331	}
332
333	try {
334	Thread.sleep(SHORT_DELAY_MS);
335	} finally {
336	joinPool(e);
337	}
338	}
339
340	/**
341	* ThreadPoolExecutor using privilegedThreadFactory has
342	* specified group, priority, daemon status, name,
343	* access control context and context class loader
344	*/
345	public void testPrivilegedThreadFactory() throws Exception {
346	Policy savedPolicy = null;
347	try {
348	savedPolicy = Policy.getPolicy();
349	AdjustablePolicy policy = new AdjustablePolicy();
350	policy.addPermission(new RuntimePermission("getContextClassLoader"));
351	policy.addPermission(new RuntimePermission("setContextClassLoader"));
352	Policy.setPolicy(policy);
353	} catch (AccessControlException ok) {
354	return;
355	}
356	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
357	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
358	final AccessControlContext thisacc = AccessController.getContext();
359	Runnable r = new Runnable() {
360	public void run() {
361	try {
362	Thread current = Thread.currentThread();
363	threadAssertTrue(!current.isDaemon());
364	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
365	ThreadGroup g = current.getThreadGroup();
366	SecurityManager s = System.getSecurityManager();
367	if (s != null)
368	threadAssertTrue(g == s.getThreadGroup());
369	else
370	threadAssertTrue(g == egroup);
371	String name = current.getName();
372	threadAssertTrue(name.endsWith("thread-1"));
373	threadAssertTrue(thisccl == current.getContextClassLoader());
374	threadAssertTrue(thisacc.equals(AccessController.getContext()));
375	} catch (SecurityException ok) {
376	// Also pass if not allowed to change settings
377	}
378	}
379	};
380	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
381
382	Policy.setPolicy(savedPolicy);
383	e.execute(r);
384	try {
385	e.shutdown();
386	} catch (SecurityException ok) {
387	}
388	try {
389	Thread.sleep(SHORT_DELAY_MS);
390	} finally {
391	joinPool(e);
392	}
393	}
394
395	void checkCCL() {
396	SecurityManager sm = System.getSecurityManager();
397	if (sm != null) {
398	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
399	sm.checkPermission(new RuntimePermission("getClassLoader"));
400	}
401	}
402
403	class CheckCCL implements Callable<Object> {
404	public Object call() {
405	checkCCL();
406	return null;
407	}
408	}
409
410
411	/**
412	* Without class loader permissions, creating
413	* privilegedCallableUsingCurrentClassLoader throws ACE
414	*/
415	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
416	Policy savedPolicy = null;
417	try {
418	savedPolicy = Policy.getPolicy();
419	AdjustablePolicy policy = new AdjustablePolicy();
420	Policy.setPolicy(policy);
421	} catch (AccessControlException ok) {
422	return;
423	}
424
425	// Check if program still has too many permissions to run test
426	try {
427	checkCCL();
428	// too many privileges to test; so return
429	Policy.setPolicy(savedPolicy);
430	return;
431	} catch (AccessControlException ok) {
432	}
433
434	try {
435	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
436	shouldThrow();
437	} catch (AccessControlException success) {
438	} finally {
439	Policy.setPolicy(savedPolicy);
440	}
441	}
442
443	/**
444	* With class loader permissions, calling
445	* privilegedCallableUsingCurrentClassLoader does not throw ACE
446	*/
447	public void testprivilegedCallableUsingCCLWithPrivs() throws Exception {
448	Policy savedPolicy = null;
449	try {
450	savedPolicy = Policy.getPolicy();
451	AdjustablePolicy policy = new AdjustablePolicy();
452	policy.addPermission(new RuntimePermission("getContextClassLoader"));
453	policy.addPermission(new RuntimePermission("setContextClassLoader"));
454	Policy.setPolicy(policy);
455	} catch (AccessControlException ok) {
456	return;
457	}
458
459	try {
460	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
461	task.call();
462	}
463	finally {
464	Policy.setPolicy(savedPolicy);
465	}
466	}
467
468	/**
469	* Without permissions, calling privilegedCallable throws ACE
470	*/
471	public void testprivilegedCallableWithNoPrivs() throws Exception {
472	Callable task;
473	Policy savedPolicy = null;
474	AdjustablePolicy policy = null;
475	AccessControlContext noprivAcc = null;
476	try {
477	savedPolicy = Policy.getPolicy();
478	policy = new AdjustablePolicy();
479	Policy.setPolicy(policy);
480	noprivAcc = AccessController.getContext();
481	task = Executors.privilegedCallable(new CheckCCL());
482	Policy.setPolicy(savedPolicy);
483	} catch (AccessControlException ok) {
484	return; // program has too few permissions to set up test
485	}
486
487	// Make sure that program doesn't have too many permissions
488	try {
489	AccessController.doPrivileged(new PrivilegedAction() {
490	public Object run() {
491	checkCCL();
492	return null;
493	}}, noprivAcc);
494	// too many permssions; skip test
495	return;
496	} catch (AccessControlException ok) {
497	}
498
499	try {
500	task.call();
501	shouldThrow();
502	} catch (AccessControlException success) {}
503	}
504
505	/**
506	* With permissions, calling privilegedCallable succeeds
507	*/
508	public void testprivilegedCallableWithPrivs() throws Exception {
509	Policy savedPolicy = null;
510	try {
511	savedPolicy = Policy.getPolicy();
512	AdjustablePolicy policy = new AdjustablePolicy();
513	policy.addPermission(new RuntimePermission("getContextClassLoader"));
514	policy.addPermission(new RuntimePermission("setContextClassLoader"));
515	Policy.setPolicy(policy);
516	} catch (AccessControlException ok) {
517	return;
518	}
519
520	Callable task = Executors.privilegedCallable(new CheckCCL());
521	try {
522	task.call();
523	} finally {
524	Policy.setPolicy(savedPolicy);
525	}
526	}
527
528	/**
529	* callable(Runnable) returns null when called
530	*/
531	public void testCallable1() throws Exception {
532	Callable c = Executors.callable(new NoOpRunnable());
533	assertNull(c.call());
534	}
535
536	/**
537	* callable(Runnable, result) returns result when called
538	*/
539	public void testCallable2() throws Exception {
540	Callable c = Executors.callable(new NoOpRunnable(), one);
541	assertSame(one, c.call());
542	}
543
544	/**
545	* callable(PrivilegedAction) returns its result when called
546	*/
547	public void testCallable3() throws Exception {
548	Callable c = Executors.callable(new PrivilegedAction() {
549	public Object run() { return one; }});
550	assertSame(one, c.call());
551	}
552
553	/**
554	* callable(PrivilegedExceptionAction) returns its result when called
555	*/
556	public void testCallable4() throws Exception {
557	Callable c = Executors.callable(new PrivilegedExceptionAction() {
558	public Object run() { return one; }});
559	assertSame(one, c.call());
560	}
561
562
563	/**
564	* callable(null Runnable) throws NPE
565	*/
566	public void testCallableNPE1() {
567	try {
568	Callable c = Executors.callable((Runnable) null);
569	shouldThrow();
570	} catch (NullPointerException success) {}
571	}
572
573	/**
574	* callable(null, result) throws NPE
575	*/
576	public void testCallableNPE2() {
577	try {
578	Callable c = Executors.callable((Runnable) null, one);
579	shouldThrow();
580	} catch (NullPointerException success) {}
581	}
582
583	/**
584	* callable(null PrivilegedAction) throws NPE
585	*/
586	public void testCallableNPE3() {
587	try {
588	Callable c = Executors.callable((PrivilegedAction) null);
589	shouldThrow();
590	} catch (NullPointerException success) {}
591	}
592
593	/**
594	* callable(null PrivilegedExceptionAction) throws NPE
595	*/
596	public void testCallableNPE4() {
597	try {
598	Callable c = Executors.callable((PrivilegedExceptionAction) null);
599	shouldThrow();
600	} catch (NullPointerException success) {}
601	}
602
603
604	}