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());
        e.shutdown();
    }

    /**
     * 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());
        e.shutdown();
    }

    /**
     * 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());
        e.shutdown();
    }

    /**
     * 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());
        e.shutdown();
    }

    /**
     * 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;
        } 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());
        e.shutdown();
    }

    /**
     * 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());
        e.shutdown();
    }

    /**
     * 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());
        e.shutdown();
    }

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

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


    /**
     * a newSingleThreadScheduledExecutor successfully runs delayed task
     */
    public void testNewSingleThreadScheduledExecutor() {
        try {
            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());
            p1.shutdown();
            joinPool(p1);
        } catch(RejectedExecutionException e){}
        catch(Exception e){
            e.printStackTrace();
            unexpectedException();
        }
    }

    /**
     * a newScheduledThreadPool successfully runs delayed task
     */
    public void testnewScheduledThreadPool() {
        try {
            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());
            p1.shutdown();
            joinPool(p1);
        } catch(RejectedExecutionException e){}
        catch(Exception e){
            e.printStackTrace();
            unexpectedException();
        }
    }

    /**
     * an unconfigurable  newScheduledThreadPool successfully runs delayed task
     */
    public void testunconfigurableScheduledExecutorService() {
        try {
            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());
            p1.shutdown();
            joinPool(p1);
        } catch(RejectedExecutionException e){}
        catch(Exception e){
            e.printStackTrace();
            unexpectedException();
        }
    }

    /**
     *  timeouts from execute will time out if they compute too long.
     */
    public void testTimedCallable() {
        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;
                }
                catch (Exception e) {
                    unexpectedException();
                }
            }
            // 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() {
        final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
        Runnable r = new Runnable() {
                public void run() {
                    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"));
                }
            };
        ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
        
        e.execute(r);
        e.shutdown();
        try {
            Thread.sleep(SHORT_DELAY_MS);
        } catch (Exception eX) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
    }

    /**
     * ThreadPoolExecutor using privilegedThreadFactory has
     * specified group, priority, daemon status, name,
     * access control context and context class loader
     */
    public void testPrivilegedThreadFactory() {
        Policy savedPolicy = Policy.getPolicy();
        AdjustablePolicy policy = new AdjustablePolicy();
        policy.addPermission(new RuntimePermission("getContextClassLoader"));
        policy.addPermission(new RuntimePermission("setContextClassLoader"));
        Policy.setPolicy(policy);
        final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
        final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
        final AccessControlContext thisacc = AccessController.getContext();
        Runnable r = new Runnable() {
                public void run() {
                    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()));
                }
            };
        ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
        
        Policy.setPolicy(savedPolicy);
        e.execute(r);
        e.shutdown();
        try {
            Thread.sleep(SHORT_DELAY_MS);
        } catch (Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }

    }

    static class CheckCCL implements Callable<Object> {
        public Object call() {
            AccessControlContext acc = AccessController.getContext();
            acc.checkPermission(new RuntimePermission("getContextClassLoader"));
            return null;
        }
    }


    /**
     * Without class loader permissions, creating
     * privilegedCallableUsingCurrentClassLoader throws ACE
     */
    public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
        Policy savedPolicy = Policy.getPolicy();
        AdjustablePolicy policy = new AdjustablePolicy();
        Policy.setPolicy(policy);
        try {
            Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
            shouldThrow();
        } catch(AccessControlException success) {
        } catch(Exception ex) {
            unexpectedException();
        } 
        finally {
            Policy.setPolicy(savedPolicy);
        }
    }

    /**
     * Without class loader permissions, calling
     * privilegedCallableUsingCurrentClassLoader throws ACE
     */
    public void testprivilegedCallableUsingCCLWithPrivs() {
        Policy savedPolicy = Policy.getPolicy();
        AdjustablePolicy policy = new AdjustablePolicy();
        policy.addPermission(new RuntimePermission("getContextClassLoader"));
        policy.addPermission(new RuntimePermission("setContextClassLoader"));
        Policy.setPolicy(policy);
        try {
            Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
            task.call();
        } catch(Exception ex) {
            unexpectedException();
        } 
        finally {
            Policy.setPolicy(savedPolicy);
        }
    }

    /**
     * Without permissions, calling privilegedCallable throws ACE
     */
    public void testprivilegedCallableWithNoPrivs() {
        Policy savedPolicy = Policy.getPolicy();
        AdjustablePolicy policy = new AdjustablePolicy();
        Policy.setPolicy(policy);
        Callable task = Executors.privilegedCallable(new CheckCCL());
        Policy.setPolicy(savedPolicy);
        try {
            task.call();
            shouldThrow();
        } catch(AccessControlException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
        }
    }

    /**
     * With permissions, calling privilegedCallable succeeds
     */
    public void testprivilegedCallableWithPrivs() {
        Policy savedPolicy = Policy.getPolicy();
        AdjustablePolicy policy = new AdjustablePolicy();
        policy.addPermission(new RuntimePermission("getContextClassLoader"));
        policy.addPermission(new RuntimePermission("setContextClassLoader"));
        Policy.setPolicy(policy);
        Callable task = Executors.privilegedCallable(new CheckCCL());
        try {
            task.call();
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            Policy.setPolicy(savedPolicy);
        }
    }

    /**
     * callable(Runnable) returns null when called
     */ 
    public void testCallable1() {
        try {
            Callable c = Executors.callable(new NoOpRunnable());
            assertNull(c.call());
        } catch(Exception ex) {
            unexpectedException();
        }
        
    }

    /**
     * callable(Runnable, result) returns result when called
     */ 
    public void testCallable2() {
        try {
            Callable c = Executors.callable(new NoOpRunnable(), one);
            assertEquals(one, c.call());
        } catch(Exception ex) {
            unexpectedException();
        }
    }

    /**
     * callable(PrivilegedAction) returns its result when called
     */ 
    public void testCallable3() {
        try {
            Callable c = Executors.callable(new PrivilegedAction() {
                    public Object run() { return one; }});
        assertEquals(one, c.call());
        } catch(Exception ex) {
            unexpectedException();
        }
    }

    /**
     * callable(PrivilegedExceptionAction) returns its result when called
     */ 
    public void testCallable4() {
        try {
            Callable c = Executors.callable(new PrivilegedExceptionAction() {
                    public Object run() { return one; }});
            assertEquals(one, c.call());
        } catch(Exception ex) {
            unexpectedException();
        }
    }


    /**
     * callable(null Runnable) throws NPE
     */ 
    public void testCallableNPE1() {
        try {
            Runnable r = null;
            Callable c = Executors.callable(r);
        } catch (NullPointerException success) {
        }
    }

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

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

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


}
Revision:	1.12
Committed:	Sat Dec 27 19:26:43 2003 UTC (20 years, 4 months ago) by dl
Branch:	MAIN
Changes since 1.11:	+5 -4 lines
Log Message:	Headers reference Creative Commons
#	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 java.math.BigInteger;
14	import java.security.*;
15
16	public class ExecutorsTest extends JSR166TestCase{
17	public static void main(String[] args) {
18	junit.textui.TestRunner.run (suite());
19	}
20	public static Test suite() {
21	return new TestSuite(ExecutorsTest.class);
22	}
23
24	static class TimedCallable<T> implements Callable<T> {
25	private final ExecutorService exec;
26	private final Callable<T> func;
27	private final long msecs;
28
29	TimedCallable(ExecutorService exec, Callable<T> func, long msecs) {
30	this.exec = exec;
31	this.func = func;
32	this.msecs = msecs;
33	}
34
35	public T call() throws Exception {
36	Future<T> ftask = exec.submit(func);
37	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	/**
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	e.shutdown();
73	}
74
75	/**
76	* A newCachedThreadPool with given ThreadFactory can execute runnables
77	*/
78	public void testNewCachedThreadPool2() {
79	ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
80	e.execute(new NoOpRunnable());
81	e.execute(new NoOpRunnable());
82	e.execute(new NoOpRunnable());
83	e.shutdown();
84	}
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	}
94	catch(NullPointerException success) {
95	}
96	}
97
98
99	/**
100	* A new SingleThreadExecutor can execute runnables
101	*/
102	public void testNewSingleThreadExecutor1() {
103	ExecutorService e = Executors.newSingleThreadExecutor();
104	e.execute(new NoOpRunnable());
105	e.execute(new NoOpRunnable());
106	e.execute(new NoOpRunnable());
107	e.shutdown();
108	}
109
110	/**
111	* A new SingleThreadExecutor with given ThreadFactory can execute runnables
112	*/
113	public void testNewSingleThreadExecutor2() {
114	ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
115	e.execute(new NoOpRunnable());
116	e.execute(new NoOpRunnable());
117	e.execute(new NoOpRunnable());
118	e.shutdown();
119	}
120
121	/**
122	* A new SingleThreadExecutor with null ThreadFactory throws NPE
123	*/
124	public void testNewSingleThreadExecutor3() {
125	try {
126	ExecutorService e = Executors.newSingleThreadExecutor(null);
127	shouldThrow();
128	}
129	catch(NullPointerException success) {
130	}
131	}
132
133	/**
134	* A new SingleThreadExecutor cannot be casted to concrete implementation
135	*/
136	public void testCastNewSingleThreadExecutor() {
137	ExecutorService e = Executors.newSingleThreadExecutor();
138	try {
139	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
140	} catch (ClassCastException success) {
141	} finally {
142	joinPool(e);
143	}
144	}
145
146
147	/**
148	* A new newFixedThreadPool can execute runnables
149	*/
150	public void testNewFixedThreadPool1() {
151	ExecutorService e = Executors.newFixedThreadPool(2);
152	e.execute(new NoOpRunnable());
153	e.execute(new NoOpRunnable());
154	e.execute(new NoOpRunnable());
155	e.shutdown();
156	}
157
158	/**
159	* A new newFixedThreadPool with given ThreadFactory can execute runnables
160	*/
161	public void testNewFixedThreadPool2() {
162	ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
163	e.execute(new NoOpRunnable());
164	e.execute(new NoOpRunnable());
165	e.execute(new NoOpRunnable());
166	e.shutdown();
167	}
168
169	/**
170	* A new newFixedThreadPool with null ThreadFactory throws NPE
171	*/
172	public void testNewFixedThreadPool3() {
173	try {
174	ExecutorService e = Executors.newFixedThreadPool(2, null);
175	shouldThrow();
176	}
177	catch(NullPointerException success) {
178	}
179	}
180
181	/**
182	* A new newFixedThreadPool with 0 threads throws IAE
183	*/
184	public void testNewFixedThreadPool4() {
185	try {
186	ExecutorService e = Executors.newFixedThreadPool(0);
187	shouldThrow();
188	}
189	catch(IllegalArgumentException success) {
190	}
191	}
192
193
194	/**
195	* An unconfigurable newFixedThreadPool can execute runnables
196	*/
197	public void testunconfigurableExecutorService() {
198	ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
199	e.execute(new NoOpRunnable());
200	e.execute(new NoOpRunnable());
201	e.execute(new NoOpRunnable());
202	e.shutdown();
203	}
204
205	/**
206	* unconfigurableExecutorService(null) throws NPE
207	*/
208	public void testunconfigurableExecutorServiceNPE() {
209	try {
210	ExecutorService e = Executors.unconfigurableExecutorService(null);
211	}
212	catch (NullPointerException success) {
213	}
214	}
215
216	/**
217	* unconfigurableScheduledExecutorService(null) throws NPE
218	*/
219	public void testunconfigurableScheduledExecutorServiceNPE() {
220	try {
221	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
222	}
223	catch (NullPointerException success) {
224	}
225	}
226
227
228	/**
229	* a newSingleThreadScheduledExecutor successfully runs delayed task
230	*/
231	public void testNewSingleThreadScheduledExecutor() {
232	try {
233	TrackedCallable callable = new TrackedCallable();
234	ScheduledExecutorService p1 = Executors.newSingleThreadScheduledExecutor();
235	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
236	assertFalse(callable.done);
237	Thread.sleep(MEDIUM_DELAY_MS);
238	assertTrue(callable.done);
239	assertEquals(Boolean.TRUE, f.get());
240	p1.shutdown();
241	joinPool(p1);
242	} catch(RejectedExecutionException e){}
243	catch(Exception e){
244	e.printStackTrace();
245	unexpectedException();
246	}
247	}
248
249	/**
250	* a newScheduledThreadPool successfully runs delayed task
251	*/
252	public void testnewScheduledThreadPool() {
253	try {
254	TrackedCallable callable = new TrackedCallable();
255	ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2);
256	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
257	assertFalse(callable.done);
258	Thread.sleep(MEDIUM_DELAY_MS);
259	assertTrue(callable.done);
260	assertEquals(Boolean.TRUE, f.get());
261	p1.shutdown();
262	joinPool(p1);
263	} catch(RejectedExecutionException e){}
264	catch(Exception e){
265	e.printStackTrace();
266	unexpectedException();
267	}
268	}
269
270	/**
271	* an unconfigurable newScheduledThreadPool successfully runs delayed task
272	*/
273	public void testunconfigurableScheduledExecutorService() {
274	try {
275	TrackedCallable callable = new TrackedCallable();
276	ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2));
277	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
278	assertFalse(callable.done);
279	Thread.sleep(MEDIUM_DELAY_MS);
280	assertTrue(callable.done);
281	assertEquals(Boolean.TRUE, f.get());
282	p1.shutdown();
283	joinPool(p1);
284	} catch(RejectedExecutionException e){}
285	catch(Exception e){
286	e.printStackTrace();
287	unexpectedException();
288	}
289	}
290
291	/**
292	* timeouts from execute will time out if they compute too long.
293	*/
294	public void testTimedCallable() {
295	int N = 10000;
296	ExecutorService executor = Executors.newSingleThreadExecutor();
297	List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
298	try {
299	long startTime = System.currentTimeMillis();
300
301	long i = 0;
302	while (tasks.size() < N) {
303	tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
304	i += 10;
305	}
306
307	int iters = 0;
308	BigInteger sum = BigInteger.ZERO;
309	for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
310	try {
311	++iters;
312	sum = sum.add(it.next().call());
313	}
314	catch (TimeoutException success) {
315	assertTrue(iters > 0);
316	return;
317	}
318	catch (Exception e) {
319	unexpectedException();
320	}
321	}
322	// if by chance we didn't ever time out, total time must be small
323	long elapsed = System.currentTimeMillis() - startTime;
324	assertTrue(elapsed < N);
325	}
326	finally {
327	joinPool(executor);
328	}
329	}
330
331
332	/**
333	* ThreadPoolExecutor using defaultThreadFactory has
334	* specified group, priority, daemon status, and name
335	*/
336	public void testDefaultThreadFactory() {
337	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
338	Runnable r = new Runnable() {
339	public void run() {
340	Thread current = Thread.currentThread();
341	threadAssertTrue(!current.isDaemon());
342	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
343	ThreadGroup g = current.getThreadGroup();
344	SecurityManager s = System.getSecurityManager();
345	if (s != null)
346	threadAssertTrue(g == s.getThreadGroup());
347	else
348	threadAssertTrue(g == egroup);
349	String name = current.getName();
350	threadAssertTrue(name.endsWith("thread-1"));
351	}
352	};
353	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
354
355	e.execute(r);
356	e.shutdown();
357	try {
358	Thread.sleep(SHORT_DELAY_MS);
359	} catch (Exception eX) {
360	unexpectedException();
361	} finally {
362	joinPool(e);
363	}
364	}
365
366	/**
367	* ThreadPoolExecutor using privilegedThreadFactory has
368	* specified group, priority, daemon status, name,
369	* access control context and context class loader
370	*/
371	public void testPrivilegedThreadFactory() {
372	Policy savedPolicy = Policy.getPolicy();
373	AdjustablePolicy policy = new AdjustablePolicy();
374	policy.addPermission(new RuntimePermission("getContextClassLoader"));
375	policy.addPermission(new RuntimePermission("setContextClassLoader"));
376	Policy.setPolicy(policy);
377	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
378	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
379	final AccessControlContext thisacc = AccessController.getContext();
380	Runnable r = new Runnable() {
381	public void run() {
382	Thread current = Thread.currentThread();
383	threadAssertTrue(!current.isDaemon());
384	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
385	ThreadGroup g = current.getThreadGroup();
386	SecurityManager s = System.getSecurityManager();
387	if (s != null)
388	threadAssertTrue(g == s.getThreadGroup());
389	else
390	threadAssertTrue(g == egroup);
391	String name = current.getName();
392	threadAssertTrue(name.endsWith("thread-1"));
393	threadAssertTrue(thisccl == current.getContextClassLoader());
394	threadAssertTrue(thisacc.equals(AccessController.getContext()));
395	}
396	};
397	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
398
399	Policy.setPolicy(savedPolicy);
400	e.execute(r);
401	e.shutdown();
402	try {
403	Thread.sleep(SHORT_DELAY_MS);
404	} catch (Exception ex) {
405	unexpectedException();
406	} finally {
407	joinPool(e);
408	}
409
410	}
411
412	static class CheckCCL implements Callable<Object> {
413	public Object call() {
414	AccessControlContext acc = AccessController.getContext();
415	acc.checkPermission(new RuntimePermission("getContextClassLoader"));
416	return null;
417	}
418	}
419
420
421	/**
422	* Without class loader permissions, creating
423	* privilegedCallableUsingCurrentClassLoader throws ACE
424	*/
425	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
426	Policy savedPolicy = Policy.getPolicy();
427	AdjustablePolicy policy = new AdjustablePolicy();
428	Policy.setPolicy(policy);
429	try {
430	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
431	shouldThrow();
432	} catch(AccessControlException success) {
433	} catch(Exception ex) {
434	unexpectedException();
435	}
436	finally {
437	Policy.setPolicy(savedPolicy);
438	}
439	}
440
441	/**
442	* Without class loader permissions, calling
443	* privilegedCallableUsingCurrentClassLoader throws ACE
444	*/
445	public void testprivilegedCallableUsingCCLWithPrivs() {
446	Policy savedPolicy = Policy.getPolicy();
447	AdjustablePolicy policy = new AdjustablePolicy();
448	policy.addPermission(new RuntimePermission("getContextClassLoader"));
449	policy.addPermission(new RuntimePermission("setContextClassLoader"));
450	Policy.setPolicy(policy);
451	try {
452	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
453	task.call();
454	} catch(Exception ex) {
455	unexpectedException();
456	}
457	finally {
458	Policy.setPolicy(savedPolicy);
459	}
460	}
461
462	/**
463	* Without permissions, calling privilegedCallable throws ACE
464	*/
465	public void testprivilegedCallableWithNoPrivs() {
466	Policy savedPolicy = Policy.getPolicy();
467	AdjustablePolicy policy = new AdjustablePolicy();
468	Policy.setPolicy(policy);
469	Callable task = Executors.privilegedCallable(new CheckCCL());
470	Policy.setPolicy(savedPolicy);
471	try {
472	task.call();
473	shouldThrow();
474	} catch(AccessControlException success) {
475	} catch(Exception ex) {
476	unexpectedException();
477	} finally {
478	}
479	}
480
481	/**
482	* With permissions, calling privilegedCallable succeeds
483	*/
484	public void testprivilegedCallableWithPrivs() {
485	Policy savedPolicy = Policy.getPolicy();
486	AdjustablePolicy policy = new AdjustablePolicy();
487	policy.addPermission(new RuntimePermission("getContextClassLoader"));
488	policy.addPermission(new RuntimePermission("setContextClassLoader"));
489	Policy.setPolicy(policy);
490	Callable task = Executors.privilegedCallable(new CheckCCL());
491	try {
492	task.call();
493	} catch(Exception ex) {
494	unexpectedException();
495	} finally {
496	Policy.setPolicy(savedPolicy);
497	}
498	}
499
500	/**
501	* callable(Runnable) returns null when called
502	*/
503	public void testCallable1() {
504	try {
505	Callable c = Executors.callable(new NoOpRunnable());
506	assertNull(c.call());
507	} catch(Exception ex) {
508	unexpectedException();
509	}
510
511	}
512
513	/**
514	* callable(Runnable, result) returns result when called
515	*/
516	public void testCallable2() {
517	try {
518	Callable c = Executors.callable(new NoOpRunnable(), one);
519	assertEquals(one, c.call());
520	} catch(Exception ex) {
521	unexpectedException();
522	}
523	}
524
525	/**
526	* callable(PrivilegedAction) returns its result when called
527	*/
528	public void testCallable3() {
529	try {
530	Callable c = Executors.callable(new PrivilegedAction() {
531	public Object run() { return one; }});
532	assertEquals(one, c.call());
533	} catch(Exception ex) {
534	unexpectedException();
535	}
536	}
537
538	/**
539	* callable(PrivilegedExceptionAction) returns its result when called
540	*/
541	public void testCallable4() {
542	try {
543	Callable c = Executors.callable(new PrivilegedExceptionAction() {
544	public Object run() { return one; }});
545	assertEquals(one, c.call());
546	} catch(Exception ex) {
547	unexpectedException();
548	}
549	}
550
551
552	/**
553	* callable(null Runnable) throws NPE
554	*/
555	public void testCallableNPE1() {
556	try {
557	Runnable r = null;
558	Callable c = Executors.callable(r);
559	} catch (NullPointerException success) {
560	}
561	}
562
563	/**
564	* callable(null, result) throws NPE
565	*/
566	public void testCallableNPE2() {
567	try {
568	Runnable r = null;
569	Callable c = Executors.callable(r, one);
570	} catch (NullPointerException success) {
571	}
572	}
573
574	/**
575	* callable(null PrivilegedAction) throws NPE
576	*/
577	public void testCallableNPE3() {
578	try {
579	PrivilegedAction r = null;
580	Callable c = Executors.callable(r);
581	} catch (NullPointerException success) {
582	}
583	}
584
585	/**
586	* callable(null PrivilegedExceptionAction) throws NPE
587	*/
588	public void testCallableNPE4() {
589	try {
590	PrivilegedExceptionAction r = null;
591	Callable c = Executors.callable(r);
592	} catch (NullPointerException success) {
593	}
594	}
595
596
597	}