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 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, TimeUnit.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, TimeUnit.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, TimeUnit.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, TimeUnit.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);
        assertEquals(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; }});
        assertEquals(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; }});
        assertEquals(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:	1.24
Committed:	Fri Nov 20 22:58:48 2009 UTC (14 years, 5 months ago) by jsr166
Branch:	MAIN
Changes since 1.23:	+25 -31 lines
Log Message:	improve exception handling
#	User	Rev	Content
1	dl	1.1	/*
2	dl	1.12	* 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	jsr166	1.20	* Other contributors include Andrew Wright, Jeffrey Hayes,
6			* Pat Fisher, Mike Judd.
7	dl	1.1	*/
8
9
10			import junit.framework.*;
11			import java.util.*;
12			import java.util.concurrent.*;
13	dl	1.2	import java.math.BigInteger;
14	dl	1.8	import java.security.*;
15	dl	1.1
16	jsr166	1.22	public class ExecutorsTest extends JSR166TestCase {
17	dl	1.1	public static void main(String[] args) {
18	jsr166	1.20	junit.textui.TestRunner.run (suite());
19	dl	1.1	}
20			public static Test suite() {
21	tim	1.9	return new TestSuite(ExecutorsTest.class);
22	dl	1.1	}
23
24	dl	1.4	static class TimedCallable<T> implements Callable<T> {
25	tim	1.10	private final ExecutorService exec;
26	dl	1.4	private final Callable<T> func;
27			private final long msecs;
28	jsr166	1.20
29	tim	1.10	TimedCallable(ExecutorService exec, Callable<T> func, long msecs) {
30	dl	1.4	this.exec = exec;
31			this.func = func;
32			this.msecs = msecs;
33			}
34	jsr166	1.20
35	dl	1.4	public T call() throws Exception {
36	tim	1.10	Future<T> ftask = exec.submit(func);
37	dl	1.4	try {
38			return ftask.get(msecs, TimeUnit.MILLISECONDS);
39			} finally {
40			ftask.cancel(true);
41			}
42			}
43			}
44
45
46			private static class Fib implements Callable<BigInteger> {
47			private final BigInteger n;
48			Fib(long n) {
49			if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
50			this.n = BigInteger.valueOf(n);
51			}
52			public BigInteger call() {
53			BigInteger f1 = BigInteger.ONE;
54			BigInteger f2 = f1;
55			for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
56			BigInteger t = f1.add(f2);
57			f1 = f2;
58			f2 = t;
59			}
60			return f1;
61			}
62			};
63
64	dl	1.5	/**
65			* A newCachedThreadPool can execute runnables
66			*/
67			public void testNewCachedThreadPool1() {
68			ExecutorService e = Executors.newCachedThreadPool();
69			e.execute(new NoOpRunnable());
70			e.execute(new NoOpRunnable());
71			e.execute(new NoOpRunnable());
72	dl	1.14	joinPool(e);
73	dl	1.5	}
74
75			/**
76			* A newCachedThreadPool with given ThreadFactory can execute runnables
77			*/
78			public void testNewCachedThreadPool2() {
79	dl	1.6	ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
80	dl	1.5	e.execute(new NoOpRunnable());
81			e.execute(new NoOpRunnable());
82			e.execute(new NoOpRunnable());
83	dl	1.14	joinPool(e);
84	dl	1.5	}
85
86			/**
87			* A newCachedThreadPool with null ThreadFactory throws NPE
88			*/
89			public void testNewCachedThreadPool3() {
90			try {
91			ExecutorService e = Executors.newCachedThreadPool(null);
92			shouldThrow();
93	jsr166	1.23	} catch (NullPointerException success) {}
94	dl	1.5	}
95
96
97			/**
98			* A new SingleThreadExecutor can execute runnables
99			*/
100			public void testNewSingleThreadExecutor1() {
101			ExecutorService e = Executors.newSingleThreadExecutor();
102			e.execute(new NoOpRunnable());
103			e.execute(new NoOpRunnable());
104			e.execute(new NoOpRunnable());
105	dl	1.14	joinPool(e);
106	dl	1.5	}
107
108			/**
109			* A new SingleThreadExecutor with given ThreadFactory can execute runnables
110			*/
111			public void testNewSingleThreadExecutor2() {
112	dl	1.6	ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
113	dl	1.5	e.execute(new NoOpRunnable());
114			e.execute(new NoOpRunnable());
115			e.execute(new NoOpRunnable());
116	dl	1.14	joinPool(e);
117	dl	1.5	}
118
119			/**
120			* A new SingleThreadExecutor with null ThreadFactory throws NPE
121			*/
122			public void testNewSingleThreadExecutor3() {
123			try {
124			ExecutorService e = Executors.newSingleThreadExecutor(null);
125			shouldThrow();
126	jsr166	1.23	} catch (NullPointerException success) {}
127	dl	1.5	}
128
129			/**
130	dl	1.11	* A new SingleThreadExecutor cannot be casted to concrete implementation
131			*/
132			public void testCastNewSingleThreadExecutor() {
133			ExecutorService e = Executors.newSingleThreadExecutor();
134			try {
135			ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
136	jsr166	1.23	shouldThrow();
137	dl	1.11	} catch (ClassCastException success) {
138			} finally {
139			joinPool(e);
140			}
141			}
142
143
144			/**
145	dl	1.5	* A new newFixedThreadPool can execute runnables
146			*/
147			public void testNewFixedThreadPool1() {
148			ExecutorService e = Executors.newFixedThreadPool(2);
149			e.execute(new NoOpRunnable());
150			e.execute(new NoOpRunnable());
151			e.execute(new NoOpRunnable());
152	dl	1.14	joinPool(e);
153	dl	1.5	}
154
155			/**
156			* A new newFixedThreadPool with given ThreadFactory can execute runnables
157			*/
158			public void testNewFixedThreadPool2() {
159	dl	1.6	ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
160	dl	1.5	e.execute(new NoOpRunnable());
161			e.execute(new NoOpRunnable());
162			e.execute(new NoOpRunnable());
163	dl	1.14	joinPool(e);
164	dl	1.5	}
165
166			/**
167			* A new newFixedThreadPool with null ThreadFactory throws NPE
168			*/
169			public void testNewFixedThreadPool3() {
170			try {
171			ExecutorService e = Executors.newFixedThreadPool(2, null);
172			shouldThrow();
173	jsr166	1.23	} catch (NullPointerException success) {}
174	dl	1.5	}
175
176			/**
177			* A new newFixedThreadPool with 0 threads throws IAE
178			*/
179			public void testNewFixedThreadPool4() {
180			try {
181			ExecutorService e = Executors.newFixedThreadPool(0);
182			shouldThrow();
183	jsr166	1.23	} catch (IllegalArgumentException success) {}
184	dl	1.5	}
185	dl	1.1
186	dl	1.2
187			/**
188	dl	1.11	* An unconfigurable newFixedThreadPool can execute runnables
189			*/
190			public void testunconfigurableExecutorService() {
191			ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
192			e.execute(new NoOpRunnable());
193			e.execute(new NoOpRunnable());
194			e.execute(new NoOpRunnable());
195	dl	1.14	joinPool(e);
196	dl	1.11	}
197
198			/**
199			* unconfigurableExecutorService(null) throws NPE
200			*/
201			public void testunconfigurableExecutorServiceNPE() {
202			try {
203			ExecutorService e = Executors.unconfigurableExecutorService(null);
204	jsr166	1.23	shouldThrow();
205			} catch (NullPointerException success) {}
206	dl	1.11	}
207
208			/**
209			* unconfigurableScheduledExecutorService(null) throws NPE
210			*/
211			public void testunconfigurableScheduledExecutorServiceNPE() {
212			try {
213			ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
214	jsr166	1.23	shouldThrow();
215			} catch (NullPointerException success) {}
216	dl	1.11	}
217
218
219			/**
220			* a newSingleThreadScheduledExecutor successfully runs delayed task
221			*/
222	jsr166	1.23	public void testNewSingleThreadScheduledExecutor() throws Exception {
223	jsr166	1.24	TrackedCallable callable = new TrackedCallable();
224			ScheduledExecutorService p1 = Executors.newSingleThreadScheduledExecutor();
225			Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
226			assertFalse(callable.done);
227			Thread.sleep(MEDIUM_DELAY_MS);
228			assertTrue(callable.done);
229			assertEquals(Boolean.TRUE, f.get());
230			joinPool(p1);
231	dl	1.11	}
232
233			/**
234			* a newScheduledThreadPool successfully runs delayed task
235			*/
236	jsr166	1.23	public void testnewScheduledThreadPool() throws Exception {
237	jsr166	1.24	TrackedCallable callable = new TrackedCallable();
238			ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2);
239			Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
240			assertFalse(callable.done);
241			Thread.sleep(MEDIUM_DELAY_MS);
242			assertTrue(callable.done);
243			assertEquals(Boolean.TRUE, f.get());
244			joinPool(p1);
245	dl	1.11	}
246
247			/**
248	jsr166	1.24	* an unconfigurable newScheduledThreadPool successfully runs delayed task
249	dl	1.11	*/
250	jsr166	1.23	public void testunconfigurableScheduledExecutorService() throws Exception {
251	jsr166	1.24	TrackedCallable callable = new TrackedCallable();
252			ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2));
253			Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
254			assertFalse(callable.done);
255			Thread.sleep(MEDIUM_DELAY_MS);
256			assertTrue(callable.done);
257			assertEquals(Boolean.TRUE, f.get());
258			joinPool(p1);
259	dl	1.11	}
260
261			/**
262	dl	1.4	* timeouts from execute will time out if they compute too long.
263	dl	1.2	*/
264	jsr166	1.23	public void testTimedCallable() throws Exception {
265	dl	1.2	int N = 10000;
266			ExecutorService executor = Executors.newSingleThreadExecutor();
267			List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
268			try {
269			long startTime = System.currentTimeMillis();
270	jsr166	1.20
271	dl	1.2	long i = 0;
272			while (tasks.size() < N) {
273			tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
274			i += 10;
275			}
276	jsr166	1.20
277	dl	1.2	int iters = 0;
278			BigInteger sum = BigInteger.ZERO;
279			for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
280			try {
281			++iters;
282			sum = sum.add(it.next().call());
283			}
284			catch (TimeoutException success) {
285			assertTrue(iters > 0);
286			return;
287			}
288			}
289			// if by chance we didn't ever time out, total time must be small
290			long elapsed = System.currentTimeMillis() - startTime;
291			assertTrue(elapsed < N);
292			}
293			finally {
294	dl	1.3	joinPool(executor);
295	dl	1.2	}
296			}
297
298	jsr166	1.20
299	dl	1.8	/**
300			* ThreadPoolExecutor using defaultThreadFactory has
301			* specified group, priority, daemon status, and name
302			*/
303	jsr166	1.23	public void testDefaultThreadFactory() throws Exception {
304	tim	1.9	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
305			Runnable r = new Runnable() {
306			public void run() {
307	dl	1.13	try {
308			Thread current = Thread.currentThread();
309			threadAssertTrue(!current.isDaemon());
310	dl	1.17	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
311	dl	1.13	ThreadGroup g = current.getThreadGroup();
312			SecurityManager s = System.getSecurityManager();
313			if (s != null)
314			threadAssertTrue(g == s.getThreadGroup());
315			else
316			threadAssertTrue(g == egroup);
317			String name = current.getName();
318			threadAssertTrue(name.endsWith("thread-1"));
319			} catch (SecurityException ok) {
320			// Also pass if not allowed to change setting
321			}
322	tim	1.9	}
323			};
324			ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
325	jsr166	1.20
326	tim	1.9	e.execute(r);
327	dl	1.14	try {
328			e.shutdown();
329	jsr166	1.21	} catch (SecurityException ok) {
330	dl	1.14	}
331	jsr166	1.20
332	tim	1.9	try {
333			Thread.sleep(SHORT_DELAY_MS);
334			} finally {
335			joinPool(e);
336			}
337	dl	1.8	}
338
339			/**
340			* ThreadPoolExecutor using privilegedThreadFactory has
341			* specified group, priority, daemon status, name,
342			* access control context and context class loader
343			*/
344	jsr166	1.23	public void testPrivilegedThreadFactory() throws Exception {
345	dl	1.14	Policy savedPolicy = null;
346			try {
347			savedPolicy = Policy.getPolicy();
348			AdjustablePolicy policy = new AdjustablePolicy();
349			policy.addPermission(new RuntimePermission("getContextClassLoader"));
350			policy.addPermission(new RuntimePermission("setContextClassLoader"));
351			Policy.setPolicy(policy);
352			} catch (AccessControlException ok) {
353			return;
354			}
355	tim	1.9	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
356			final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
357	dl	1.8	final AccessControlContext thisacc = AccessController.getContext();
358	tim	1.9	Runnable r = new Runnable() {
359			public void run() {
360	dl	1.13	try {
361			Thread current = Thread.currentThread();
362			threadAssertTrue(!current.isDaemon());
363	dl	1.17	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
364	dl	1.13	ThreadGroup g = current.getThreadGroup();
365			SecurityManager s = System.getSecurityManager();
366			if (s != null)
367			threadAssertTrue(g == s.getThreadGroup());
368			else
369			threadAssertTrue(g == egroup);
370			String name = current.getName();
371			threadAssertTrue(name.endsWith("thread-1"));
372			threadAssertTrue(thisccl == current.getContextClassLoader());
373			threadAssertTrue(thisacc.equals(AccessController.getContext()));
374	jsr166	1.21	} catch (SecurityException ok) {
375	dl	1.13	// Also pass if not allowed to change settings
376			}
377	dl	1.14	}
378	tim	1.9	};
379			ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
380	jsr166	1.20
381	tim	1.9	Policy.setPolicy(savedPolicy);
382			e.execute(r);
383	dl	1.14	try {
384			e.shutdown();
385	jsr166	1.21	} catch (SecurityException ok) {
386	dl	1.14	}
387	tim	1.9	try {
388			Thread.sleep(SHORT_DELAY_MS);
389			} finally {
390			joinPool(e);
391			}
392	dl	1.1
393	dl	1.8	}
394	dl	1.11
395	dl	1.16	void checkCCL() {
396	dl	1.18	SecurityManager sm = System.getSecurityManager();
397			if (sm != null) {
398			sm.checkPermission(new RuntimePermission("setContextClassLoader"));
399	jsr166	1.19	sm.checkPermission(new RuntimePermission("getClassLoader"));
400	dl	1.18	}
401	dl	1.16	}
402
403			class CheckCCL implements Callable<Object> {
404	dl	1.11	public Object call() {
405	dl	1.16	checkCCL();
406	dl	1.11	return null;
407			}
408			}
409
410
411			/**
412			* Without class loader permissions, creating
413			* privilegedCallableUsingCurrentClassLoader throws ACE
414			*/
415			public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
416	dl	1.14	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	dl	1.16	// 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	jsr166	1.21	} catch (AccessControlException ok) {
432	jsr166	1.20	}
433	dl	1.16
434	dl	1.11	try {
435			Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
436			shouldThrow();
437	jsr166	1.21	} catch (AccessControlException success) {
438	jsr166	1.23	} finally {
439	dl	1.11	Policy.setPolicy(savedPolicy);
440			}
441			}
442
443			/**
444	dl	1.16	* With class loader permissions, calling
445			* privilegedCallableUsingCurrentClassLoader does not throw ACE
446	dl	1.11	*/
447	jsr166	1.23	public void testprivilegedCallableUsingCCLWithPrivs() throws Exception {
448	dl	1.14	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	jsr166	1.20
459	dl	1.11	try {
460			Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
461			task.call();
462	jsr166	1.20	}
463	dl	1.11	finally {
464			Policy.setPolicy(savedPolicy);
465			}
466			}
467
468			/**
469			* Without permissions, calling privilegedCallable throws ACE
470			*/
471	jsr166	1.23	public void testprivilegedCallableWithNoPrivs() throws Exception {
472	dl	1.16	Callable task;
473			Policy savedPolicy = null;
474			AdjustablePolicy policy = null;
475			AccessControlContext noprivAcc = null;
476	dl	1.14	try {
477	dl	1.16	savedPolicy = Policy.getPolicy();
478			policy = new AdjustablePolicy();
479	dl	1.14	Policy.setPolicy(policy);
480	dl	1.16	noprivAcc = AccessController.getContext();
481			task = Executors.privilegedCallable(new CheckCCL());
482	dl	1.15	Policy.setPolicy(savedPolicy);
483	dl	1.14	} catch (AccessControlException ok) {
484	dl	1.16	return; // program has too few permissions to set up test
485			}
486
487	jsr166	1.20	// Make sure that program doesn't have too many permissions
488	dl	1.16	try {
489			AccessController.doPrivileged(new PrivilegedAction() {
490			public Object run() {
491			checkCCL();
492			return null;
493			}}, noprivAcc);
494			// too many permssions; skip test
495	dl	1.14	return;
496	jsr166	1.21	} catch (AccessControlException ok) {
497	dl	1.14	}
498
499	dl	1.11	try {
500	dl	1.16	task.call();
501			shouldThrow();
502	jsr166	1.23	} catch (AccessControlException success) {}
503	dl	1.11	}
504
505			/**
506			* With permissions, calling privilegedCallable succeeds
507			*/
508	jsr166	1.23	public void testprivilegedCallableWithPrivs() throws Exception {
509	dl	1.14	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	jsr166	1.20
520	dl	1.11	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	jsr166	1.20	*/
531	jsr166	1.23	public void testCallable1() throws Exception {
532			Callable c = Executors.callable(new NoOpRunnable());
533			assertNull(c.call());
534	dl	1.11	}
535
536			/**
537			* callable(Runnable, result) returns result when called
538	jsr166	1.20	*/
539	jsr166	1.23	public void testCallable2() throws Exception {
540			Callable c = Executors.callable(new NoOpRunnable(), one);
541			assertEquals(one, c.call());
542	dl	1.11	}
543
544			/**
545			* callable(PrivilegedAction) returns its result when called
546	jsr166	1.20	*/
547	jsr166	1.23	public void testCallable3() throws Exception {
548			Callable c = Executors.callable(new PrivilegedAction() {
549			public Object run() { return one; }});
550	dl	1.11	assertEquals(one, c.call());
551			}
552
553			/**
554			* callable(PrivilegedExceptionAction) returns its result when called
555	jsr166	1.20	*/
556	jsr166	1.23	public void testCallable4() throws Exception {
557			Callable c = Executors.callable(new PrivilegedExceptionAction() {
558			public Object run() { return one; }});
559			assertEquals(one, c.call());
560	dl	1.11	}
561
562
563			/**
564			* callable(null Runnable) throws NPE
565	jsr166	1.20	*/
566	dl	1.11	public void testCallableNPE1() {
567			try {
568	jsr166	1.23	Callable c = Executors.callable((Runnable) null);
569			shouldThrow();
570			} catch (NullPointerException success) {}
571	dl	1.11	}
572
573			/**
574			* callable(null, result) throws NPE
575	jsr166	1.20	*/
576	dl	1.11	public void testCallableNPE2() {
577			try {
578	jsr166	1.23	Callable c = Executors.callable((Runnable) null, one);
579			shouldThrow();
580			} catch (NullPointerException success) {}
581	dl	1.11	}
582
583			/**
584			* callable(null PrivilegedAction) throws NPE
585	jsr166	1.20	*/
586	dl	1.11	public void testCallableNPE3() {
587			try {
588	jsr166	1.23	Callable c = Executors.callable((PrivilegedAction) null);
589			shouldThrow();
590			} catch (NullPointerException success) {}
591	dl	1.11	}
592
593			/**
594			* callable(null PrivilegedExceptionAction) throws NPE
595	jsr166	1.20	*/
596	dl	1.11	public void testCallableNPE4() {
597			try {
598	jsr166	1.23	Callable c = Executors.callable((PrivilegedExceptionAction) null);
599			shouldThrow();
600			} catch (NullPointerException success) {}
601	dl	1.11	}
602
603	dl	1.1
604			}