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;
        } 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);
        }
        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());
            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());
            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());
            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);
        try {
            e.shutdown();
        } catch(SecurityException ok) {
        }
        
        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 = 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);
        } catch (Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }

    }

    void checkCCL() {
            AccessController.getContext().checkPermission(new RuntimePermission("getContextClassLoader"));
    }

    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) {
        } catch(Exception ex) {
            unexpectedException();
        } 
        finally {
            Policy.setPolicy(savedPolicy);
        }
    }

    /**
     * With class loader permissions, calling
     * privilegedCallableUsingCurrentClassLoader does not throw ACE
     */
    public void testprivilegedCallableUsingCCLWithPrivs() {
        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();
        } catch(Exception ex) {
            unexpectedException();
        } 
        finally {
            Policy.setPolicy(savedPolicy);
        }
    }

    /**
     * Without permissions, calling privilegedCallable throws ACE
     */
    public void testprivilegedCallableWithNoPrivs() {
        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) {
        } catch(Exception ex) {
            unexpectedException();
        } 
    }

    /**
     * With permissions, calling privilegedCallable succeeds
     */
    public void testprivilegedCallableWithPrivs() {
        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();
        } 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:	1.16
Committed:	Tue Jan 27 11:37:00 2004 UTC (20 years, 3 months ago) by dl
Branch:	MAIN
CVS Tags:	JSR166_PFD
Changes since 1.15:	+40 -26 lines
Log Message:	Don't fail if program has too many permissions
#	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	joinPool(e);
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	joinPool(e);
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	joinPool(e);
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	joinPool(e);
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	joinPool(e);
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	joinPool(e);
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	joinPool(e);
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	joinPool(p1);
241	} catch(RejectedExecutionException e){}
242	catch(Exception e){
243	e.printStackTrace();
244	unexpectedException();
245	}
246	}
247
248	/**
249	* a newScheduledThreadPool successfully runs delayed task
250	*/
251	public void testnewScheduledThreadPool() {
252	try {
253	TrackedCallable callable = new TrackedCallable();
254	ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2);
255	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
256	assertFalse(callable.done);
257	Thread.sleep(MEDIUM_DELAY_MS);
258	assertTrue(callable.done);
259	assertEquals(Boolean.TRUE, f.get());
260	joinPool(p1);
261	} catch(RejectedExecutionException e){}
262	catch(Exception e){
263	e.printStackTrace();
264	unexpectedException();
265	}
266	}
267
268	/**
269	* an unconfigurable newScheduledThreadPool successfully runs delayed task
270	*/
271	public void testunconfigurableScheduledExecutorService() {
272	try {
273	TrackedCallable callable = new TrackedCallable();
274	ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2));
275	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
276	assertFalse(callable.done);
277	Thread.sleep(MEDIUM_DELAY_MS);
278	assertTrue(callable.done);
279	assertEquals(Boolean.TRUE, f.get());
280	joinPool(p1);
281	} catch(RejectedExecutionException e){}
282	catch(Exception e){
283	e.printStackTrace();
284	unexpectedException();
285	}
286	}
287
288	/**
289	* timeouts from execute will time out if they compute too long.
290	*/
291	public void testTimedCallable() {
292	int N = 10000;
293	ExecutorService executor = Executors.newSingleThreadExecutor();
294	List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
295	try {
296	long startTime = System.currentTimeMillis();
297
298	long i = 0;
299	while (tasks.size() < N) {
300	tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
301	i += 10;
302	}
303
304	int iters = 0;
305	BigInteger sum = BigInteger.ZERO;
306	for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
307	try {
308	++iters;
309	sum = sum.add(it.next().call());
310	}
311	catch (TimeoutException success) {
312	assertTrue(iters > 0);
313	return;
314	}
315	catch (Exception e) {
316	unexpectedException();
317	}
318	}
319	// if by chance we didn't ever time out, total time must be small
320	long elapsed = System.currentTimeMillis() - startTime;
321	assertTrue(elapsed < N);
322	}
323	finally {
324	joinPool(executor);
325	}
326	}
327
328
329	/**
330	* ThreadPoolExecutor using defaultThreadFactory has
331	* specified group, priority, daemon status, and name
332	*/
333	public void testDefaultThreadFactory() {
334	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
335	Runnable r = new Runnable() {
336	public void run() {
337	try {
338	Thread current = Thread.currentThread();
339	threadAssertTrue(!current.isDaemon());
340	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
341	ThreadGroup g = current.getThreadGroup();
342	SecurityManager s = System.getSecurityManager();
343	if (s != null)
344	threadAssertTrue(g == s.getThreadGroup());
345	else
346	threadAssertTrue(g == egroup);
347	String name = current.getName();
348	threadAssertTrue(name.endsWith("thread-1"));
349	} catch (SecurityException ok) {
350	// Also pass if not allowed to change setting
351	}
352	}
353	};
354	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
355
356	e.execute(r);
357	try {
358	e.shutdown();
359	} catch(SecurityException ok) {
360	}
361
362	try {
363	Thread.sleep(SHORT_DELAY_MS);
364	} catch (Exception eX) {
365	unexpectedException();
366	} finally {
367	joinPool(e);
368	}
369	}
370
371	/**
372	* ThreadPoolExecutor using privilegedThreadFactory has
373	* specified group, priority, daemon status, name,
374	* access control context and context class loader
375	*/
376	public void testPrivilegedThreadFactory() {
377	Policy savedPolicy = null;
378	try {
379	savedPolicy = Policy.getPolicy();
380	AdjustablePolicy policy = new AdjustablePolicy();
381	policy.addPermission(new RuntimePermission("getContextClassLoader"));
382	policy.addPermission(new RuntimePermission("setContextClassLoader"));
383	Policy.setPolicy(policy);
384	} catch (AccessControlException ok) {
385	return;
386	}
387	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
388	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
389	final AccessControlContext thisacc = AccessController.getContext();
390	Runnable r = new Runnable() {
391	public void run() {
392	try {
393	Thread current = Thread.currentThread();
394	threadAssertTrue(!current.isDaemon());
395	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
396	ThreadGroup g = current.getThreadGroup();
397	SecurityManager s = System.getSecurityManager();
398	if (s != null)
399	threadAssertTrue(g == s.getThreadGroup());
400	else
401	threadAssertTrue(g == egroup);
402	String name = current.getName();
403	threadAssertTrue(name.endsWith("thread-1"));
404	threadAssertTrue(thisccl == current.getContextClassLoader());
405	threadAssertTrue(thisacc.equals(AccessController.getContext()));
406	} catch(SecurityException ok) {
407	// Also pass if not allowed to change settings
408	}
409	}
410	};
411	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
412
413	Policy.setPolicy(savedPolicy);
414	e.execute(r);
415	try {
416	e.shutdown();
417	} catch(SecurityException ok) {
418	}
419	try {
420	Thread.sleep(SHORT_DELAY_MS);
421	} catch (Exception ex) {
422	unexpectedException();
423	} finally {
424	joinPool(e);
425	}
426
427	}
428
429	void checkCCL() {
430	AccessController.getContext().checkPermission(new RuntimePermission("getContextClassLoader"));
431	}
432
433	class CheckCCL implements Callable<Object> {
434	public Object call() {
435	checkCCL();
436	return null;
437	}
438	}
439
440
441	/**
442	* Without class loader permissions, creating
443	* privilegedCallableUsingCurrentClassLoader throws ACE
444	*/
445	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
446	Policy savedPolicy = null;
447	try {
448	savedPolicy = Policy.getPolicy();
449	AdjustablePolicy policy = new AdjustablePolicy();
450	Policy.setPolicy(policy);
451	} catch (AccessControlException ok) {
452	return;
453	}
454
455	// Check if program still has too many permissions to run test
456	try {
457	checkCCL();
458	// too many privileges to test; so return
459	Policy.setPolicy(savedPolicy);
460	return;
461	} catch(AccessControlException ok) {
462	}
463
464	try {
465	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
466	shouldThrow();
467	} catch(AccessControlException success) {
468	} catch(Exception ex) {
469	unexpectedException();
470	}
471	finally {
472	Policy.setPolicy(savedPolicy);
473	}
474	}
475
476	/**
477	* With class loader permissions, calling
478	* privilegedCallableUsingCurrentClassLoader does not throw ACE
479	*/
480	public void testprivilegedCallableUsingCCLWithPrivs() {
481	Policy savedPolicy = null;
482	try {
483	savedPolicy = Policy.getPolicy();
484	AdjustablePolicy policy = new AdjustablePolicy();
485	policy.addPermission(new RuntimePermission("getContextClassLoader"));
486	policy.addPermission(new RuntimePermission("setContextClassLoader"));
487	Policy.setPolicy(policy);
488	} catch (AccessControlException ok) {
489	return;
490	}
491
492	try {
493	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
494	task.call();
495	} catch(Exception ex) {
496	unexpectedException();
497	}
498	finally {
499	Policy.setPolicy(savedPolicy);
500	}
501	}
502
503	/**
504	* Without permissions, calling privilegedCallable throws ACE
505	*/
506	public void testprivilegedCallableWithNoPrivs() {
507	Callable task;
508	Policy savedPolicy = null;
509	AdjustablePolicy policy = null;
510	AccessControlContext noprivAcc = null;
511	try {
512	savedPolicy = Policy.getPolicy();
513	policy = new AdjustablePolicy();
514	Policy.setPolicy(policy);
515	noprivAcc = AccessController.getContext();
516	task = Executors.privilegedCallable(new CheckCCL());
517	Policy.setPolicy(savedPolicy);
518	} catch (AccessControlException ok) {
519	return; // program has too few permissions to set up test
520	}
521
522	// Make sure that program doesn't have too many permissions
523	try {
524	AccessController.doPrivileged(new PrivilegedAction() {
525	public Object run() {
526	checkCCL();
527	return null;
528	}}, noprivAcc);
529	// too many permssions; skip test
530	return;
531	} catch(AccessControlException ok) {
532	}
533
534	try {
535	task.call();
536	shouldThrow();
537	} catch(AccessControlException success) {
538	} catch(Exception ex) {
539	unexpectedException();
540	}
541	}
542
543	/**
544	* With permissions, calling privilegedCallable succeeds
545	*/
546	public void testprivilegedCallableWithPrivs() {
547	Policy savedPolicy = null;
548	try {
549	savedPolicy = Policy.getPolicy();
550	AdjustablePolicy policy = new AdjustablePolicy();
551	policy.addPermission(new RuntimePermission("getContextClassLoader"));
552	policy.addPermission(new RuntimePermission("setContextClassLoader"));
553	Policy.setPolicy(policy);
554	} catch (AccessControlException ok) {
555	return;
556	}
557
558	Callable task = Executors.privilegedCallable(new CheckCCL());
559	try {
560	task.call();
561	} catch(Exception ex) {
562	unexpectedException();
563	} finally {
564	Policy.setPolicy(savedPolicy);
565	}
566	}
567
568	/**
569	* callable(Runnable) returns null when called
570	*/
571	public void testCallable1() {
572	try {
573	Callable c = Executors.callable(new NoOpRunnable());
574	assertNull(c.call());
575	} catch(Exception ex) {
576	unexpectedException();
577	}
578
579	}
580
581	/**
582	* callable(Runnable, result) returns result when called
583	*/
584	public void testCallable2() {
585	try {
586	Callable c = Executors.callable(new NoOpRunnable(), one);
587	assertEquals(one, c.call());
588	} catch(Exception ex) {
589	unexpectedException();
590	}
591	}
592
593	/**
594	* callable(PrivilegedAction) returns its result when called
595	*/
596	public void testCallable3() {
597	try {
598	Callable c = Executors.callable(new PrivilegedAction() {
599	public Object run() { return one; }});
600	assertEquals(one, c.call());
601	} catch(Exception ex) {
602	unexpectedException();
603	}
604	}
605
606	/**
607	* callable(PrivilegedExceptionAction) returns its result when called
608	*/
609	public void testCallable4() {
610	try {
611	Callable c = Executors.callable(new PrivilegedExceptionAction() {
612	public Object run() { return one; }});
613	assertEquals(one, c.call());
614	} catch(Exception ex) {
615	unexpectedException();
616	}
617	}
618
619
620	/**
621	* callable(null Runnable) throws NPE
622	*/
623	public void testCallableNPE1() {
624	try {
625	Runnable r = null;
626	Callable c = Executors.callable(r);
627	} catch (NullPointerException success) {
628	}
629	}
630
631	/**
632	* callable(null, result) throws NPE
633	*/
634	public void testCallableNPE2() {
635	try {
636	Runnable r = null;
637	Callable c = Executors.callable(r, one);
638	} catch (NullPointerException success) {
639	}
640	}
641
642	/**
643	* callable(null PrivilegedAction) throws NPE
644	*/
645	public void testCallableNPE3() {
646	try {
647	PrivilegedAction r = null;
648	Callable c = Executors.callable(r);
649	} catch (NullPointerException success) {
650	}
651	}
652
653	/**
654	* callable(null PrivilegedExceptionAction) throws NPE
655	*/
656	public void testCallableNPE4() {
657	try {
658	PrivilegedExceptionAction r = null;
659	Callable c = Executors.callable(r);
660	} catch (NullPointerException success) {
661	}
662	}
663
664
665	}