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() {
                    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);
        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() {
                    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);
        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:	1.13
Committed:	Mon Jan 19 15:49:02 2004 UTC (20 years, 3 months ago) by dl
Branch:	MAIN
Changes since 1.12:	+32 -25 lines
Log Message:	Javadoc fixes
#	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	try {
341	Thread current = Thread.currentThread();
342	threadAssertTrue(!current.isDaemon());
343	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
344	ThreadGroup g = current.getThreadGroup();
345	SecurityManager s = System.getSecurityManager();
346	if (s != null)
347	threadAssertTrue(g == s.getThreadGroup());
348	else
349	threadAssertTrue(g == egroup);
350	String name = current.getName();
351	threadAssertTrue(name.endsWith("thread-1"));
352	} catch (SecurityException ok) {
353	// Also pass if not allowed to change setting
354	}
355	}
356	};
357	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
358
359	e.execute(r);
360	e.shutdown();
361	try {
362	Thread.sleep(SHORT_DELAY_MS);
363	} catch (Exception eX) {
364	unexpectedException();
365	} finally {
366	joinPool(e);
367	}
368	}
369
370	/**
371	* ThreadPoolExecutor using privilegedThreadFactory has
372	* specified group, priority, daemon status, name,
373	* access control context and context class loader
374	*/
375	public void testPrivilegedThreadFactory() {
376	Policy savedPolicy = Policy.getPolicy();
377	AdjustablePolicy policy = new AdjustablePolicy();
378	policy.addPermission(new RuntimePermission("getContextClassLoader"));
379	policy.addPermission(new RuntimePermission("setContextClassLoader"));
380	Policy.setPolicy(policy);
381	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
382	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
383	final AccessControlContext thisacc = AccessController.getContext();
384	Runnable r = new Runnable() {
385	public void run() {
386	try {
387	Thread current = Thread.currentThread();
388	threadAssertTrue(!current.isDaemon());
389	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
390	ThreadGroup g = current.getThreadGroup();
391	SecurityManager s = System.getSecurityManager();
392	if (s != null)
393	threadAssertTrue(g == s.getThreadGroup());
394	else
395	threadAssertTrue(g == egroup);
396	String name = current.getName();
397	threadAssertTrue(name.endsWith("thread-1"));
398	threadAssertTrue(thisccl == current.getContextClassLoader());
399	threadAssertTrue(thisacc.equals(AccessController.getContext()));
400	} catch(SecurityException ok) {
401	// Also pass if not allowed to change settings
402	}
403	};
404	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
405
406	Policy.setPolicy(savedPolicy);
407	e.execute(r);
408	e.shutdown();
409	try {
410	Thread.sleep(SHORT_DELAY_MS);
411	} catch (Exception ex) {
412	unexpectedException();
413	} finally {
414	joinPool(e);
415	}
416
417	}
418
419	static class CheckCCL implements Callable<Object> {
420	public Object call() {
421	AccessControlContext acc = AccessController.getContext();
422	acc.checkPermission(new RuntimePermission("getContextClassLoader"));
423	return null;
424	}
425	}
426
427
428	/**
429	* Without class loader permissions, creating
430	* privilegedCallableUsingCurrentClassLoader throws ACE
431	*/
432	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
433	Policy savedPolicy = Policy.getPolicy();
434	AdjustablePolicy policy = new AdjustablePolicy();
435	Policy.setPolicy(policy);
436	try {
437	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
438	shouldThrow();
439	} catch(AccessControlException success) {
440	} catch(Exception ex) {
441	unexpectedException();
442	}
443	finally {
444	Policy.setPolicy(savedPolicy);
445	}
446	}
447
448	/**
449	* Without class loader permissions, calling
450	* privilegedCallableUsingCurrentClassLoader throws ACE
451	*/
452	public void testprivilegedCallableUsingCCLWithPrivs() {
453	Policy savedPolicy = Policy.getPolicy();
454	AdjustablePolicy policy = new AdjustablePolicy();
455	policy.addPermission(new RuntimePermission("getContextClassLoader"));
456	policy.addPermission(new RuntimePermission("setContextClassLoader"));
457	Policy.setPolicy(policy);
458	try {
459	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
460	task.call();
461	} catch(Exception ex) {
462	unexpectedException();
463	}
464	finally {
465	Policy.setPolicy(savedPolicy);
466	}
467	}
468
469	/**
470	* Without permissions, calling privilegedCallable throws ACE
471	*/
472	public void testprivilegedCallableWithNoPrivs() {
473	Policy savedPolicy = Policy.getPolicy();
474	AdjustablePolicy policy = new AdjustablePolicy();
475	Policy.setPolicy(policy);
476	Callable task = Executors.privilegedCallable(new CheckCCL());
477	Policy.setPolicy(savedPolicy);
478	try {
479	task.call();
480	shouldThrow();
481	} catch(AccessControlException success) {
482	} catch(Exception ex) {
483	unexpectedException();
484	} finally {
485	}
486	}
487
488	/**
489	* With permissions, calling privilegedCallable succeeds
490	*/
491	public void testprivilegedCallableWithPrivs() {
492	Policy savedPolicy = Policy.getPolicy();
493	AdjustablePolicy policy = new AdjustablePolicy();
494	policy.addPermission(new RuntimePermission("getContextClassLoader"));
495	policy.addPermission(new RuntimePermission("setContextClassLoader"));
496	Policy.setPolicy(policy);
497	Callable task = Executors.privilegedCallable(new CheckCCL());
498	try {
499	task.call();
500	} catch(Exception ex) {
501	unexpectedException();
502	} finally {
503	Policy.setPolicy(savedPolicy);
504	}
505	}
506
507	/**
508	* callable(Runnable) returns null when called
509	*/
510	public void testCallable1() {
511	try {
512	Callable c = Executors.callable(new NoOpRunnable());
513	assertNull(c.call());
514	} catch(Exception ex) {
515	unexpectedException();
516	}
517
518	}
519
520	/**
521	* callable(Runnable, result) returns result when called
522	*/
523	public void testCallable2() {
524	try {
525	Callable c = Executors.callable(new NoOpRunnable(), one);
526	assertEquals(one, c.call());
527	} catch(Exception ex) {
528	unexpectedException();
529	}
530	}
531
532	/**
533	* callable(PrivilegedAction) returns its result when called
534	*/
535	public void testCallable3() {
536	try {
537	Callable c = Executors.callable(new PrivilegedAction() {
538	public Object run() { return one; }});
539	assertEquals(one, c.call());
540	} catch(Exception ex) {
541	unexpectedException();
542	}
543	}
544
545	/**
546	* callable(PrivilegedExceptionAction) returns its result when called
547	*/
548	public void testCallable4() {
549	try {
550	Callable c = Executors.callable(new PrivilegedExceptionAction() {
551	public Object run() { return one; }});
552	assertEquals(one, c.call());
553	} catch(Exception ex) {
554	unexpectedException();
555	}
556	}
557
558
559	/**
560	* callable(null Runnable) throws NPE
561	*/
562	public void testCallableNPE1() {
563	try {
564	Runnable r = null;
565	Callable c = Executors.callable(r);
566	} catch (NullPointerException success) {
567	}
568	}
569
570	/**
571	* callable(null, result) throws NPE
572	*/
573	public void testCallableNPE2() {
574	try {
575	Runnable r = null;
576	Callable c = Executors.callable(r, one);
577	} catch (NullPointerException success) {
578	}
579	}
580
581	/**
582	* callable(null PrivilegedAction) throws NPE
583	*/
584	public void testCallableNPE3() {
585	try {
586	PrivilegedAction r = null;
587	Callable c = Executors.callable(r);
588	} catch (NullPointerException success) {
589	}
590	}
591
592	/**
593	* callable(null PrivilegedExceptionAction) throws NPE
594	*/
595	public void testCallableNPE4() {
596	try {
597	PrivilegedExceptionAction r = null;
598	Callable c = Executors.callable(r);
599	} catch (NullPointerException success) {
600	}
601	}
602
603
604	}