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ThreadPoolExecutorTest.javaAPI DocAndroid 1.5 API52341Wed May 06 22:41:02 BST 2009tests.api.java.util.concurrent

ThreadPoolExecutorTest

public class ThreadPoolExecutorTest extends JSR166TestCase

Fields Summary
Constructors Summary
Methods Summary
public static voidmain(java.lang.String[] args)

        junit.textui.TestRunner.run (suite());
public static junit.framework.Testsuite()

        return new TestSuite(ThreadPoolExecutorTest.class);
public voidtestBeforeAfter()
beforeExecute and afterExecute are called when executing task

        ExtendedTPE tpe = new ExtendedTPE();
        try {
            TrackedNoOpRunnable r = new TrackedNoOpRunnable();
            tpe.execute(r);
            Thread.sleep(SHORT_DELAY_MS);
            assertTrue(r.done);
            assertTrue(tpe.beforeCalled);
            assertTrue(tpe.afterCalled);
            try { tpe.shutdown(); } catch(SecurityException ok) { return; }
        }
        catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(tpe);
        }
public voidtestCallerRunsOnShutdown()
execute using CallerRunsPolicy drops task on shutdown

        RejectedExecutionHandler h = new ThreadPoolExecutor.CallerRunsPolicy();
        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1), h);

        try { p.shutdown(); } catch(SecurityException ok) { return; }
        try {
            TrackedNoOpRunnable r = new TrackedNoOpRunnable();
            p.execute(r);
            assertFalse(r.done);
        } catch(RejectedExecutionException success){
            unexpectedException();
        } finally {
            joinPool(p);
        }
public voidtestConstructor1()
Constructor throws if corePoolSize argument is less than zero

        try {
            new ThreadPoolExecutor(-1,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor10()
Constructor throws if corePoolSize is greater than the maximumPoolSize

        try {
            new ThreadPoolExecutor(2,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor11()
Constructor throws if corePoolSize argument is less than zero

        try {
            new ThreadPoolExecutor(-1,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new NoOpREHandler());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor12()
Constructor throws if maximumPoolSize is less than zero

        try {
            new ThreadPoolExecutor(1,-1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new NoOpREHandler());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor13()
Constructor throws if maximumPoolSize is equal to zero

        try {
            new ThreadPoolExecutor(1,0,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new NoOpREHandler());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor14()
Constructor throws if keepAliveTime is less than zero

        try {
            new ThreadPoolExecutor(1,2,-1L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new NoOpREHandler());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor15()
Constructor throws if corePoolSize is greater than the maximumPoolSize

        try {
            new ThreadPoolExecutor(2,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new NoOpREHandler());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor16()
Constructor throws if corePoolSize argument is less than zero

        try {
            new ThreadPoolExecutor(-1,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),new NoOpREHandler());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor17()
Constructor throws if maximumPoolSize is less than zero

        try {
            new ThreadPoolExecutor(1,-1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),new NoOpREHandler());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor18()
Constructor throws if maximumPoolSize is equal to zero

        try {
            new ThreadPoolExecutor(1,0,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),new NoOpREHandler());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor19()
Constructor throws if keepAliveTime is less than zero

        try {
            new ThreadPoolExecutor(1,2,-1L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),new NoOpREHandler());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor2()
Constructor throws if maximumPoolSize is less than zero

        try {
            new ThreadPoolExecutor(1,-1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor20()
Constructor throws if corePoolSize is greater than the maximumPoolSize

        try {
            new ThreadPoolExecutor(2,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),new NoOpREHandler());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor3()
Constructor throws if maximumPoolSize is equal to zero

        try {
            new ThreadPoolExecutor(1,0,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor4()
Constructor throws if keepAliveTime is less than zero

        try {
            new ThreadPoolExecutor(1,2,-1L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor5()
Constructor throws if corePoolSize is greater than the maximumPoolSize

        try {
            new ThreadPoolExecutor(2,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor6()
Constructor throws if corePoolSize argument is less than zero

        try {
            new ThreadPoolExecutor(-1,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory());
            shouldThrow();
        } catch (IllegalArgumentException success){}
public voidtestConstructor7()
Constructor throws if maximumPoolSize is less than zero

        try {
            new ThreadPoolExecutor(1,-1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor8()
Constructor throws if maximumPoolSize is equal to zero

        try {
            new ThreadPoolExecutor(1,0,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructor9()
Constructor throws if keepAliveTime is less than zero

        try {
            new ThreadPoolExecutor(1,2,-1L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory());
            shouldThrow();
        }
        catch (IllegalArgumentException success){}
public voidtestConstructorNullPointerException()
Constructor throws if workQueue is set to null

        try {
            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,null);
            shouldThrow();
        }
        catch (NullPointerException success){}
public voidtestConstructorNullPointerException2()
Constructor throws if workQueue is set to null

        try {
            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,null,new SimpleThreadFactory());
            shouldThrow();
        }
        catch (NullPointerException success){}
public voidtestConstructorNullPointerException3()
Constructor throws if threadFactory is set to null

        try {
            ThreadFactory f = null;
            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10),f);
            shouldThrow();
        }
        catch (NullPointerException success){}
public voidtestConstructorNullPointerException4()
Constructor throws if workQueue is set to null

        try {
            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,null,new NoOpREHandler());
            shouldThrow();
        }
        catch (NullPointerException success){}
public voidtestConstructorNullPointerException5()
Constructor throws if handler is set to null

        try {
            RejectedExecutionHandler r = null;
            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10),r);
            shouldThrow();
        }
        catch (NullPointerException success){}
public voidtestConstructorNullPointerException6()
Constructor throws if workQueue is set to null

        try {
            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,null,new SimpleThreadFactory(),new NoOpREHandler());
            shouldThrow();
        }
        catch (NullPointerException success){}
public voidtestConstructorNullPointerException7()
Constructor throws if handler is set to null

        try {
            RejectedExecutionHandler r = null;
            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),r);
            shouldThrow();
        }
        catch (NullPointerException success){}
public voidtestConstructorNullPointerException8()
Constructor throws if ThreadFactory is set top null

        try {
            ThreadFactory f = null;
            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10),f,new NoOpREHandler());
            shouldThrow();
        }
        catch (NullPointerException successdn8){}
public voidtestCorePoolSizeIllegalArgumentException()
setCorePoolSize of negative value throws IllegalArgumentException

        ThreadPoolExecutor tpe = null;
        try {
            tpe = new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10));
        } catch(Exception e){}
        try {
            tpe.setCorePoolSize(-1);
            shouldThrow();
        } catch(IllegalArgumentException success){
        } finally {
            try { tpe.shutdown(); } catch(SecurityException ok) { return; }
        }
        joinPool(tpe);
public voidtestDiscardOldestOnShutdown()
execute using DiscardOldestPolicy drops task on shutdown

        RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardOldestPolicy();
        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1), h);

        try { p.shutdown(); } catch(SecurityException ok) { return; }
        try {
            TrackedNoOpRunnable r = new TrackedNoOpRunnable();
            p.execute(r);
            assertFalse(r.done);
        } catch(RejectedExecutionException success){
            unexpectedException();
        } finally {
            joinPool(p);
        }
public voidtestDiscardOnShutdown()
execute using DiscardPolicy drops task on shutdown

        RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardPolicy();
        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1), h);

        try { p.shutdown(); } catch(SecurityException ok) { return; }
        try {
            TrackedNoOpRunnable r = new TrackedNoOpRunnable();
            p.execute(r);
            assertFalse(r.done);
        } catch(RejectedExecutionException success){
            unexpectedException();
        } finally {
            joinPool(p);
        }
public voidtestExecute()
execute successfully executes a runnable

        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            p1.execute(new Runnable() {
                    public void run() {
                        try {
                            Thread.sleep(SHORT_DELAY_MS);
                        } catch(InterruptedException e){
                            threadUnexpectedException();
                        }
                    }
                });
            Thread.sleep(SMALL_DELAY_MS);
        } catch(InterruptedException e){
            unexpectedException();
        } 
        joinPool(p1);
public voidtestExecuteNull()
execute (null) throws NPE

        ThreadPoolExecutor tpe = null;
        try {
            tpe = new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10));
            tpe.execute(null);
            shouldThrow();
        } catch(NullPointerException success){}
        
        joinPool(tpe);
public voidtestGetActiveCount()
getActiveCount increases but doesn't overestimate, when a thread becomes active

        ThreadPoolExecutor p2 = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertEquals(0, p2.getActiveCount());
        p2.execute(new MediumRunnable());
        try {
            Thread.sleep(SHORT_DELAY_MS);
        } catch(Exception e){
            unexpectedException();
        }
        assertEquals(1, p2.getActiveCount());
        joinPool(p2);
public voidtestGetCompletedTaskCount()
getCompletedTaskCount increases, but doesn't overestimate, when tasks complete

        ThreadPoolExecutor p2 = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertEquals(0, p2.getCompletedTaskCount());
        p2.execute(new ShortRunnable());
        try {
            Thread.sleep(SMALL_DELAY_MS);
        } catch(Exception e){
            unexpectedException();
        }
        assertEquals(1, p2.getCompletedTaskCount());
        try { p2.shutdown(); } catch(SecurityException ok) { return; }
        joinPool(p2);
public voidtestGetCorePoolSize()
getCorePoolSize returns size given in constructor if not otherwise set

        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertEquals(1, p1.getCorePoolSize());
        joinPool(p1);
public voidtestGetKeepAliveTime()
getKeepAliveTime returns value given in constructor if not otherwise set

        ThreadPoolExecutor p2 = new ThreadPoolExecutor(2, 2, 1000, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertEquals(1, p2.getKeepAliveTime(TimeUnit.SECONDS));
        joinPool(p2);
public voidtestGetLargestPoolSize()
getLargestPoolSize increases, but doesn't overestimate, when multiple threads active

        ThreadPoolExecutor p2 = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            assertEquals(0, p2.getLargestPoolSize());
            p2.execute(new MediumRunnable());
            p2.execute(new MediumRunnable());
            Thread.sleep(SHORT_DELAY_MS);
            assertEquals(2, p2.getLargestPoolSize());
        } catch(Exception e){
            unexpectedException();
        } 
        joinPool(p2);
public voidtestGetMaximumPoolSize()
getMaximumPoolSize returns value given in constructor if not otherwise set

        ThreadPoolExecutor p2 = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertEquals(2, p2.getMaximumPoolSize());
        joinPool(p2);
public voidtestGetPoolSize()
getPoolSize increases, but doesn't overestimate, when threads become active

        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertEquals(0, p1.getPoolSize());
        p1.execute(new MediumRunnable());
        assertEquals(1, p1.getPoolSize());
        joinPool(p1);
public voidtestGetQueue()
getQueue returns the work queue, which contains queued tasks

        BlockingQueue<Runnable> q = new ArrayBlockingQueue<Runnable>(10);
        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, q);
        FutureTask[] tasks = new FutureTask[5];
        for(int i = 0; i < 5; i++){
            tasks[i] = new FutureTask(new MediumPossiblyInterruptedRunnable(), Boolean.TRUE);
            p1.execute(tasks[i]);
        }
        try {
            Thread.sleep(SHORT_DELAY_MS);
            BlockingQueue<Runnable> wq = p1.getQueue();
            assertSame(q, wq);
            assertFalse(wq.contains(tasks[0]));
            assertTrue(wq.contains(tasks[4]));
        } catch(Exception e) {
            unexpectedException();
        } finally {
            joinPool(p1);
        }
public voidtestGetRejectedExecutionHandler()
getRejectedExecutionHandler returns handler in constructor if not set

        RejectedExecutionHandler h = new NoOpREHandler();
        ThreadPoolExecutor p = new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10), h);
        assertSame(h, p.getRejectedExecutionHandler());
        joinPool(p);
public voidtestGetTaskCount()
getTaskCount increases, but doesn't overestimate, when tasks submitted

        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            assertEquals(0, p1.getTaskCount());
            p1.execute(new MediumRunnable());
            Thread.sleep(SHORT_DELAY_MS);
            assertEquals(1, p1.getTaskCount());
        } catch(Exception e){
            unexpectedException();
        } 
        joinPool(p1);
public voidtestGetThreadFactory()
getThreadFactory returns factory in constructor if not set

        ThreadFactory tf = new SimpleThreadFactory();
        ThreadPoolExecutor p = new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10), tf, new NoOpREHandler());
        assertSame(tf, p.getThreadFactory());
        joinPool(p);
public voidtestInvokeAll1()
invokeAll(null) throws NPE

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            e.invokeAll(null);
        } catch (NullPointerException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestInvokeAll2()
invokeAll(empty collection) returns empty collection

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
            assertTrue(r.isEmpty());
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestInvokeAll3()
invokeAll(c) throws NPE if c has null elements

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            l.add(null);
            e.invokeAll(l);
        } catch (NullPointerException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestInvokeAll4()
get of element of invokeAll(c) throws exception on failed task

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new NPETask());
            List<Future<String>> result = e.invokeAll(l);
            assertEquals(1, result.size());
            for (Iterator<Future<String>> it = result.iterator(); it.hasNext();) 
                it.next().get();
        } catch(ExecutionException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestInvokeAll5()
invokeAll(c) returns results of all completed tasks

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            l.add(new StringTask());
            List<Future<String>> result = e.invokeAll(l);
            assertEquals(2, result.size());
            for (Iterator<Future<String>> it = result.iterator(); it.hasNext();) 
                assertSame(TEST_STRING, it.next().get());
        } catch (ExecutionException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestInvokeAny1()
invokeAny(null) throws NPE

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            e.invokeAny(null);
        } catch (NullPointerException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestInvokeAny2()
invokeAny(empty collection) throws IAE

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            e.invokeAny(new ArrayList<Callable<String>>());
        } catch (IllegalArgumentException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestInvokeAny3()
invokeAny(c) throws NPE if c has null elements

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            l.add(null);
            e.invokeAny(l);
        } catch (NullPointerException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestInvokeAny4()
invokeAny(c) throws ExecutionException if no task completes

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new NPETask());
            e.invokeAny(l);
        } catch (ExecutionException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestInvokeAny5()
invokeAny(c) returns result of some task

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            l.add(new StringTask());
            String result = e.invokeAny(l);
            assertSame(TEST_STRING, result);
        } catch (ExecutionException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestIsShutdown()
isShutDown is false before shutdown, true after

        
        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertFalse(p1.isShutdown());
        try { p1.shutdown(); } catch(SecurityException ok) { return; }
        assertTrue(p1.isShutdown());
        joinPool(p1);
public voidtestIsTerminated()
isTerminated is false before termination, true after

        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertFalse(p1.isTerminated());
        try {
            p1.execute(new MediumRunnable());
        } finally {
            try { p1.shutdown(); } catch(SecurityException ok) { return; }
        }
        try {
            assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
            assertTrue(p1.isTerminated());
        } catch(Exception e){
            unexpectedException();
        }
public voidtestIsTerminating()
isTerminating is not true when running or when terminated

        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertFalse(p1.isTerminating());
        try {
            p1.execute(new SmallRunnable());
            assertFalse(p1.isTerminating());
        } finally {
            try { p1.shutdown(); } catch(SecurityException ok) { return; }
        }
        try {
            assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
            assertTrue(p1.isTerminated());
            assertFalse(p1.isTerminating());
        } catch(Exception e){
            unexpectedException();
        }
public voidtestKeepAliveTimeIllegalArgumentException()
setKeepAliveTime throws IllegalArgumentException when given a negative value

        ThreadPoolExecutor tpe = null;
        try {
            tpe = new ThreadPoolExecutor(2,3,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10));
        } catch(Exception e){}
        
        try {
            tpe.setKeepAliveTime(-1,TimeUnit.MILLISECONDS);
            shouldThrow();
        } catch(IllegalArgumentException success){
        } finally {
            try { tpe.shutdown(); } catch(SecurityException ok) { return; }
        }
        joinPool(tpe);
public voidtestMaximumPoolSizeIllegalArgumentException()
setMaximumPoolSize(int) throws IllegalArgumentException if given a value less the core pool size

        ThreadPoolExecutor tpe = null;
        try {
            tpe = new ThreadPoolExecutor(2,3,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10));
        } catch(Exception e){}
        try {
            tpe.setMaximumPoolSize(1);
            shouldThrow();
        } catch(IllegalArgumentException success){
        } finally {
            try { tpe.shutdown(); } catch(SecurityException ok) { return; }
        }
        joinPool(tpe);
public voidtestMaximumPoolSizeIllegalArgumentException2()
setMaximumPoolSize throws IllegalArgumentException if given a negative value

        ThreadPoolExecutor tpe = null;
        try {
            tpe = new ThreadPoolExecutor(2,3,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10));
        } catch(Exception e){}
        try {
            tpe.setMaximumPoolSize(-1);
            shouldThrow();
        } catch(IllegalArgumentException success){
        } finally {
            try { tpe.shutdown(); } catch(SecurityException ok) { return; }
        }
        joinPool(tpe);
public voidtestPrestartAllCoreThreads()
prestartAllCoreThreads starts all corePoolSize threads

        ThreadPoolExecutor p2 = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertEquals(0, p2.getPoolSize());
        p2.prestartAllCoreThreads();
        assertEquals(2, p2.getPoolSize());
        p2.prestartAllCoreThreads();
        assertEquals(2, p2.getPoolSize());
        joinPool(p2);
public voidtestPrestartCoreThread()
prestartCoreThread starts a thread if under corePoolSize, else doesn't

        ThreadPoolExecutor p2 = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        assertEquals(0, p2.getPoolSize());
        assertTrue(p2.prestartCoreThread());
        assertEquals(1, p2.getPoolSize());
        assertTrue(p2.prestartCoreThread());
        assertEquals(2, p2.getPoolSize());
        assertFalse(p2.prestartCoreThread());
        assertEquals(2, p2.getPoolSize());
        joinPool(p2);
public voidtestPurge()
purge removes cancelled tasks from the queue

        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        FutureTask[] tasks = new FutureTask[5];
        for(int i = 0; i < 5; i++){
            tasks[i] = new FutureTask(new MediumPossiblyInterruptedRunnable(), Boolean.TRUE);
            p1.execute(tasks[i]);
        }
        tasks[4].cancel(true);
        tasks[3].cancel(true);
        p1.purge();
        long count = p1.getTaskCount();
        assertTrue(count >= 2 && count < 5);
        joinPool(p1);
public voidtestRejectedExecutionExceptionOnShutdown()
execute throws RejectedExecutionException if shutdown

        ThreadPoolExecutor tpe = 
            new ThreadPoolExecutor(1,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(1));
        try { tpe.shutdown(); } catch(SecurityException ok) { return; }
        try {
            tpe.execute(new NoOpRunnable());
            shouldThrow();
        } catch(RejectedExecutionException success){}
        
        joinPool(tpe);
public voidtestRemove()
remove(task) removes queued task, and fails to remove active task

        BlockingQueue<Runnable> q = new ArrayBlockingQueue<Runnable>(10);
        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, q);
        FutureTask[] tasks = new FutureTask[5];
        for(int i = 0; i < 5; i++){
            tasks[i] = new FutureTask(new MediumPossiblyInterruptedRunnable(), Boolean.TRUE);
            p1.execute(tasks[i]);
        }
        try {
            Thread.sleep(SHORT_DELAY_MS);
            assertFalse(p1.remove(tasks[0]));
            assertTrue(q.contains(tasks[4]));
            assertTrue(q.contains(tasks[3]));
            assertTrue(p1.remove(tasks[4]));
            assertFalse(p1.remove(tasks[4]));
            assertFalse(q.contains(tasks[4]));
            assertTrue(q.contains(tasks[3]));
            assertTrue(p1.remove(tasks[3]));
            assertFalse(q.contains(tasks[3]));
        } catch(Exception e) {
            unexpectedException();
        } finally {
            joinPool(p1);
        }
public voidtestSaturatedExecute()
execute throws RejectedExecutionException if saturated.

        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
        try {
            
            for(int i = 0; i < 5; ++i){
                p.execute(new MediumRunnable());
            }
            shouldThrow();
        } catch(RejectedExecutionException success){}
        joinPool(p);
public voidtestSaturatedExecute2()
executor using CallerRunsPolicy runs task if saturated.

        RejectedExecutionHandler h = new ThreadPoolExecutor.CallerRunsPolicy();
        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1), h);
        try {
            
            TrackedNoOpRunnable[] tasks = new TrackedNoOpRunnable[5];
            for(int i = 0; i < 5; ++i){
                tasks[i] = new TrackedNoOpRunnable();
            }
            TrackedLongRunnable mr = new TrackedLongRunnable();
            p.execute(mr);
            for(int i = 0; i < 5; ++i){
                p.execute(tasks[i]);
            }
            for(int i = 1; i < 5; ++i) {
                assertTrue(tasks[i].done);
            }
            try { p.shutdownNow(); } catch(SecurityException ok) { return; }
        } catch(RejectedExecutionException ex){
            unexpectedException();
        } finally {
            joinPool(p);
        }
public voidtestSaturatedExecute3()
executor using DiscardPolicy drops task if saturated.

        RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardPolicy();
        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1), h);
        try {
            
            TrackedNoOpRunnable[] tasks = new TrackedNoOpRunnable[5];
            for(int i = 0; i < 5; ++i){
                tasks[i] = new TrackedNoOpRunnable();
            }
            p.execute(new TrackedLongRunnable());
            for(int i = 0; i < 5; ++i){
                p.execute(tasks[i]);
            }
            for(int i = 0; i < 5; ++i){
                assertFalse(tasks[i].done);
            }
            try { p.shutdownNow(); } catch(SecurityException ok) { return; }
        } catch(RejectedExecutionException ex){
            unexpectedException();
        } finally {
            joinPool(p);
        }
public voidtestSaturatedExecute4()
executor using DiscardOldestPolicy drops oldest task if saturated.

        RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardOldestPolicy();
        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1), h);
        try {
            p.execute(new TrackedLongRunnable());
            TrackedLongRunnable r2 = new TrackedLongRunnable();
            p.execute(r2);
            assertTrue(p.getQueue().contains(r2));
            TrackedNoOpRunnable r3 = new TrackedNoOpRunnable();
            p.execute(r3);
            assertFalse(p.getQueue().contains(r2));
            assertTrue(p.getQueue().contains(r3));
            try { p.shutdownNow(); } catch(SecurityException ok) { return; }
        } catch(RejectedExecutionException ex){
            unexpectedException();
        } finally {
            joinPool(p);
        }
public voidtestSetRejectedExecutionHandler()
setRejectedExecutionHandler sets the handler returned by getRejectedExecutionHandler

        ThreadPoolExecutor p = new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        RejectedExecutionHandler h = new NoOpREHandler();
        p.setRejectedExecutionHandler(h);
        assertSame(h, p.getRejectedExecutionHandler());
        joinPool(p);
public voidtestSetRejectedExecutionHandlerNull()
setRejectedExecutionHandler(null) throws NPE

        ThreadPoolExecutor p = new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            p.setRejectedExecutionHandler(null);
            shouldThrow();
        } catch (NullPointerException success) {
        } finally {
            joinPool(p);
        }
public voidtestSetThreadFactory()
setThreadFactory sets the thread factory returned by getThreadFactory

        ThreadPoolExecutor p = new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        ThreadFactory tf = new SimpleThreadFactory();
        p.setThreadFactory(tf);
        assertSame(tf, p.getThreadFactory());
        joinPool(p);
public voidtestSetThreadFactoryNull()
setThreadFactory(null) throws NPE

        ThreadPoolExecutor p = new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            p.setThreadFactory(null);
            shouldThrow();
        } catch (NullPointerException success) {
        } finally {
            joinPool(p);
        }
public voidtestShutDownNow()
shutDownNow returns a list containing tasks that were not run

        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        List l;
        try {
            for(int i = 0; i < 5; i++)
                p1.execute(new MediumPossiblyInterruptedRunnable());
        }
        finally {
            try {
                l = p1.shutdownNow();
            } catch (SecurityException ok) { return; }
            
        }
        assertTrue(p1.isShutdown());
        assertTrue(l.size() <= 4);
public voidtestSubmitCallable()
completed submit of callable returns result

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            Future<String> future = e.submit(new StringTask());
            String result = future.get();
            assertSame(TEST_STRING, result);
        }
        catch (ExecutionException ex) {
            unexpectedException();
        }
        catch (InterruptedException ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestSubmitRunnable()
completed submit of runnable returns successfully

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            Future<?> future = e.submit(new NoOpRunnable());
            future.get();
            assertTrue(future.isDone());
        }
        catch (ExecutionException ex) {
            unexpectedException();
        }
        catch (InterruptedException ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestSubmitRunnable2()
completed submit of (runnable, result) returns result

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
            String result = future.get();
            assertSame(TEST_STRING, result);
        }
        catch (ExecutionException ex) {
            unexpectedException();
        }
        catch (InterruptedException ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTerminated()
terminated() is called on termination

        ExtendedTPE tpe = new ExtendedTPE();
        try { tpe.shutdown(); } catch(SecurityException ok) { return; }
        assertTrue(tpe.terminatedCalled);
        joinPool(tpe);
public voidtestTimedInvokeAll1()
timed invokeAll(null) throws NPE

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            e.invokeAll(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
        } catch (NullPointerException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAll2()
timed invokeAll(empty collection) returns empty collection

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            assertTrue(r.isEmpty());
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAll3()
timed invokeAll(c) throws NPE if c has null elements

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            l.add(null);
            e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
        } catch (NullPointerException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAll4()
get of element of invokeAll(c) throws exception on failed task

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new NPETask());
            List<Future<String>> result = e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            assertEquals(1, result.size());
            for (Iterator<Future<String>> it = result.iterator(); it.hasNext();) 
                it.next().get();
        } catch(ExecutionException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAll5()
timed invokeAll(c) returns results of all completed tasks

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            l.add(new StringTask());
            List<Future<String>> result = e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            assertEquals(2, result.size());
            for (Iterator<Future<String>> it = result.iterator(); it.hasNext();) 
                assertSame(TEST_STRING, it.next().get());
        } catch (ExecutionException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAll6()
timed invokeAll(c) cancels tasks not completed by timeout

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            l.add(Executors.callable(new MediumPossiblyInterruptedRunnable(), TEST_STRING));
            l.add(new StringTask());
            List<Future<String>> result = e.invokeAll(l, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
            assertEquals(3, result.size());
            Iterator<Future<String>> it = result.iterator(); 
            Future<String> f1 = it.next();
            Future<String> f2 = it.next();
            Future<String> f3 = it.next();
            assertTrue(f1.isDone());
            assertTrue(f2.isDone());
            assertTrue(f3.isDone());
            assertFalse(f1.isCancelled());
            assertTrue(f2.isCancelled());
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAllNullTimeUnit()
timed invokeAll(,,null) throws NPE

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            e.invokeAll(l, MEDIUM_DELAY_MS, null);
        } catch (NullPointerException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAny1()
timed invokeAny(null) throws NPE

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            e.invokeAny(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
        } catch (NullPointerException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAny2()
timed invokeAny(empty collection) throws IAE

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
        } catch (IllegalArgumentException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAny3()
timed invokeAny(c) throws NPE if c has null elements

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            l.add(null);
            e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
        } catch (NullPointerException success) {
        } catch(Exception ex) {
            ex.printStackTrace();
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAny4()
timed invokeAny(c) throws ExecutionException if no task completes

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new NPETask());
            e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
        } catch(ExecutionException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAny5()
timed invokeAny(c) returns result of some task

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            l.add(new StringTask());
            String result = e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
            assertSame(TEST_STRING, result);
        } catch (ExecutionException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }
public voidtestTimedInvokeAnyNullTimeUnit()
timed invokeAny(,,null) throws NPE

        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
        try {
            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
            l.add(new StringTask());
            e.invokeAny(l, MEDIUM_DELAY_MS, null);
        } catch (NullPointerException success) {
        } catch(Exception ex) {
            unexpectedException();
        } finally {
            joinPool(e);
        }