--- jsr166/src/test/tck/ThreadPoolExecutorTest.java	2003/12/25 19:48:57	1.14
+++ jsr166/src/test/tck/ThreadPoolExecutorTest.java	2019/09/06 18:43:35	1.126
@@ -1,1502 +1,2032 @@
 /*
- * Written by members of JCP JSR-166 Expert Group and released to the
- * public domain. Use, modify, and redistribute this code in any way
- * without acknowledgement. Other contributors include Andrew Wright,
- * Jeffrey Hayes, Pat Fischer, Mike Judd.
+ * 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/publicdomain/zero/1.0/
+ * Other contributors include Andrew Wright, Jeffrey Hayes,
+ * Pat Fisher, Mike Judd.
  */
 
-import java.util.concurrent.*;
-import junit.framework.*;
-import java.util.*;
+import static java.util.concurrent.TimeUnit.MILLISECONDS;
+import static java.util.concurrent.TimeUnit.NANOSECONDS;
+import static java.util.concurrent.TimeUnit.SECONDS;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.Callable;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
+import java.util.concurrent.FutureTask;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.RejectedExecutionException;
+import java.util.concurrent.RejectedExecutionHandler;
+import java.util.concurrent.SynchronousQueue;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.ThreadLocalRandom;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.ThreadPoolExecutor.AbortPolicy;
+import java.util.concurrent.ThreadPoolExecutor.CallerRunsPolicy;
+import java.util.concurrent.ThreadPoolExecutor.DiscardPolicy;
+import java.util.concurrent.ThreadPoolExecutor.DiscardOldestPolicy;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicReference;
+
+import junit.framework.Test;
+import junit.framework.TestSuite;
 
 public class ThreadPoolExecutorTest extends JSR166TestCase {
     public static void main(String[] args) {
-	junit.textui.TestRunner.run (suite());	
+        main(suite(), args);
     }
     public static Test suite() {
         return new TestSuite(ThreadPoolExecutorTest.class);
     }
-    
+
     static class ExtendedTPE extends ThreadPoolExecutor {
-        volatile boolean beforeCalled = false;
-        volatile boolean afterCalled = false;
-        volatile boolean terminatedCalled = false;
+        final CountDownLatch beforeCalled = new CountDownLatch(1);
+        final CountDownLatch afterCalled = new CountDownLatch(1);
+        final CountDownLatch terminatedCalled = new CountDownLatch(1);
+
         public ExtendedTPE() {
-            super(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new SynchronousQueue<Runnable>());
+            super(1, 1, LONG_DELAY_MS, MILLISECONDS, new SynchronousQueue<Runnable>());
         }
         protected void beforeExecute(Thread t, Runnable r) {
-            beforeCalled = true;
+            beforeCalled.countDown();
         }
         protected void afterExecute(Runnable r, Throwable t) {
-            afterCalled = true;
+            afterCalled.countDown();
         }
         protected void terminated() {
-            terminatedCalled = true;
+            terminatedCalled.countDown();
+        }
+
+        public boolean beforeCalled() {
+            return beforeCalled.getCount() == 0;
+        }
+        public boolean afterCalled() {
+            return afterCalled.getCount() == 0;
+        }
+        public boolean terminatedCalled() {
+            return terminatedCalled.getCount() == 0;
+        }
+    }
+
+    static class FailingThreadFactory implements ThreadFactory {
+        int calls = 0;
+        public Thread newThread(Runnable r) {
+            if (++calls > 1) return null;
+            return new Thread(r);
         }
     }
 
     /**
-     *  execute successfully executes a runnable
+     * execute successfully executes a runnable
      */
-    public void testExecute() {
-        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 void testExecute() throws InterruptedException {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            final CountDownLatch done = new CountDownLatch(1);
+            final Runnable task = new CheckedRunnable() {
+                public void realRun() { done.countDown(); }};
+            p.execute(task);
+            await(done);
+        }
     }
 
     /**
-     *  getActiveCount increases but doesn't overestimate, when a
-     *  thread becomes active
+     * getActiveCount increases but doesn't overestimate, when a
+     * thread becomes active
      */
-    public void testGetActiveCount() {
-        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();
+    public void testGetActiveCount() throws InterruptedException {
+        final CountDownLatch done = new CountDownLatch(1);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p, done)) {
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            assertEquals(0, p.getActiveCount());
+            p.execute(new CheckedRunnable() {
+                public void realRun() throws InterruptedException {
+                    threadStarted.countDown();
+                    assertEquals(1, p.getActiveCount());
+                    await(done);
+                }});
+            await(threadStarted);
+            assertEquals(1, p.getActiveCount());
         }
-        assertEquals(1, p2.getActiveCount());
-        joinPool(p2);
     }
 
     /**
-     *  prestartCoreThread starts a thread if under corePoolSize, else doesn't
+     * prestartCoreThread starts a thread if under corePoolSize, else doesn't
      */
     public void testPrestartCoreThread() {
-        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);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 6,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertEquals(0, p.getPoolSize());
+            assertTrue(p.prestartCoreThread());
+            assertEquals(1, p.getPoolSize());
+            assertTrue(p.prestartCoreThread());
+            assertEquals(2, p.getPoolSize());
+            assertFalse(p.prestartCoreThread());
+            assertEquals(2, p.getPoolSize());
+            p.setCorePoolSize(4);
+            assertTrue(p.prestartCoreThread());
+            assertEquals(3, p.getPoolSize());
+            assertTrue(p.prestartCoreThread());
+            assertEquals(4, p.getPoolSize());
+            assertFalse(p.prestartCoreThread());
+            assertEquals(4, p.getPoolSize());
+        }
     }
 
     /**
-     *  prestartAllCoreThreads starts all corePoolSize threads
+     * prestartAllCoreThreads starts all corePoolSize threads
      */
     public void testPrestartAllCoreThreads() {
-        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);
-    }
-    
-    /**
-     *   getCompletedTaskCount increases, but doesn't overestimate,
-     *   when tasks complete
-     */
-    public void testGetCompletedTaskCount() {
-        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());
-        p2.shutdown();
-        joinPool(p2);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 6,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertEquals(0, p.getPoolSize());
+            p.prestartAllCoreThreads();
+            assertEquals(2, p.getPoolSize());
+            p.prestartAllCoreThreads();
+            assertEquals(2, p.getPoolSize());
+            p.setCorePoolSize(4);
+            p.prestartAllCoreThreads();
+            assertEquals(4, p.getPoolSize());
+            p.prestartAllCoreThreads();
+            assertEquals(4, p.getPoolSize());
+        }
+    }
+
+    /**
+     * getCompletedTaskCount increases, but doesn't overestimate,
+     * when tasks complete
+     */
+    public void testGetCompletedTaskCount() throws InterruptedException {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            final CountDownLatch threadProceed = new CountDownLatch(1);
+            final CountDownLatch threadDone = new CountDownLatch(1);
+            assertEquals(0, p.getCompletedTaskCount());
+            p.execute(new CheckedRunnable() {
+                public void realRun() throws InterruptedException {
+                    threadStarted.countDown();
+                    assertEquals(0, p.getCompletedTaskCount());
+                    await(threadProceed);
+                    threadDone.countDown();
+                }});
+            await(threadStarted);
+            assertEquals(0, p.getCompletedTaskCount());
+            threadProceed.countDown();
+            await(threadDone);
+            long startTime = System.nanoTime();
+            while (p.getCompletedTaskCount() != 1) {
+                if (millisElapsedSince(startTime) > LONG_DELAY_MS)
+                    fail("timed out");
+                Thread.yield();
+            }
+        }
     }
-    
+
     /**
-     *   getCorePoolSize returns size given in constructor if not otherwise set
+     * getCorePoolSize returns size given in constructor if not otherwise set
      */
     public void testGetCorePoolSize() {
-        ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        assertEquals(1, p1.getCorePoolSize());
-        joinPool(p1);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertEquals(1, p.getCorePoolSize());
+        }
     }
-    
+
     /**
-     *   getKeepAliveTime returns value given in constructor if not otherwise set
+     * getKeepAliveTime returns value given in constructor if not otherwise set
      */
     public void testGetKeepAliveTime() {
-        ThreadPoolExecutor p2 = new ThreadPoolExecutor(2, 2, 1000, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        assertEquals(1, p2.getKeepAliveTime(TimeUnit.SECONDS));
-        joinPool(p2);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 2,
+                                   1000, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertEquals(1, p.getKeepAliveTime(SECONDS));
+        }
     }
 
-
-    /** 
+    /**
      * getThreadFactory returns factory in constructor if not set
      */
     public void testGetThreadFactory() {
-        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());
-        p.shutdown();
-        joinPool(p);
+        ThreadFactory threadFactory = new SimpleThreadFactory();
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   threadFactory,
+                                   new NoOpREHandler());
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertSame(threadFactory, p.getThreadFactory());
+        }
     }
 
-    /** 
+    /**
      * setThreadFactory sets the thread factory returned by getThreadFactory
      */
     public void testSetThreadFactory() {
-        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());
-        p.shutdown();
-        joinPool(p);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            ThreadFactory threadFactory = new SimpleThreadFactory();
+            p.setThreadFactory(threadFactory);
+            assertSame(threadFactory, p.getThreadFactory());
+        }
     }
 
-
-    /** 
+    /**
      * setThreadFactory(null) throws NPE
      */
     public void testSetThreadFactoryNull() {
-        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);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            try {
+                p.setThreadFactory(null);
+                shouldThrow();
+            } catch (NullPointerException success) {}
         }
     }
 
-    /** 
+    /**
+     * The default rejected execution handler is AbortPolicy.
+     */
+    public void testDefaultRejectedExecutionHandler() {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertTrue(p.getRejectedExecutionHandler() instanceof AbortPolicy);
+        }
+    }
+
+    /**
      * getRejectedExecutionHandler returns handler in constructor if not set
      */
     public void testGetRejectedExecutionHandler() {
-        RejectedExecutionHandler h = new NoOpREHandler();
-        ThreadPoolExecutor p = new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10), h);
-        assertSame(h, p.getRejectedExecutionHandler());
-        p.shutdown();
-        joinPool(p);
+        final RejectedExecutionHandler handler = new NoOpREHandler();
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   handler);
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertSame(handler, p.getRejectedExecutionHandler());
+        }
     }
 
-    /** 
+    /**
      * setRejectedExecutionHandler sets the handler returned by
      * getRejectedExecutionHandler
      */
     public void testSetRejectedExecutionHandler() {
-        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());
-        p.shutdown();
-        joinPool(p);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            RejectedExecutionHandler handler = new NoOpREHandler();
+            p.setRejectedExecutionHandler(handler);
+            assertSame(handler, p.getRejectedExecutionHandler());
+        }
     }
 
-
-    /** 
+    /**
      * setRejectedExecutionHandler(null) throws NPE
      */
     public void testSetRejectedExecutionHandlerNull() {
-        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);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            try {
+                p.setRejectedExecutionHandler(null);
+                shouldThrow();
+            } catch (NullPointerException success) {}
         }
     }
 
-    
-    /**
-     *   getLargestPoolSize increases, but doesn't overestimate, when
-     *   multiple threads active
-     */
-    public void testGetLargestPoolSize() {
-        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);
-    }
-    
-    /**
-     *   getMaximumPoolSize returns value given in constructor if not
-     *   otherwise set
-     */
-    public void testGetMaximumPoolSize() {
-        ThreadPoolExecutor p2 = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        assertEquals(2, p2.getMaximumPoolSize());
-        joinPool(p2);
-    }
-    
     /**
-     *   getPoolSize increases, but doesn't overestimate, when threads
-     *   become active
-     */
-    public void testGetPoolSize() {
-        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);
-    }
-    
-    /**
-     *  getTaskCount increases, but doesn't overestimate, when tasks submitted
-     */
-    public void testGetTaskCount() {
-        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);
-    }
-    
-    /**
-     *   isShutDown is false before shutdown, true after
-     */
-    public void testIsShutdown() {
-        
-	ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        assertFalse(p1.isShutdown());
-        p1.shutdown();
-	assertTrue(p1.isShutdown());
-        joinPool(p1);
+     * getLargestPoolSize increases, but doesn't overestimate, when
+     * multiple threads active
+     */
+    public void testGetLargestPoolSize() throws InterruptedException {
+        final int THREADS = 3;
+        final CountDownLatch done = new CountDownLatch(1);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(THREADS, THREADS,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p, done)) {
+            assertEquals(0, p.getLargestPoolSize());
+            final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
+            for (int i = 0; i < THREADS; i++)
+                p.execute(new CheckedRunnable() {
+                    public void realRun() throws InterruptedException {
+                        threadsStarted.countDown();
+                        await(done);
+                        assertEquals(THREADS, p.getLargestPoolSize());
+                    }});
+            await(threadsStarted);
+            assertEquals(THREADS, p.getLargestPoolSize());
+        }
+        assertEquals(THREADS, p.getLargestPoolSize());
     }
 
-        
     /**
-     *  isTerminated is false before termination, true after
+     * getMaximumPoolSize returns value given in constructor if not
+     * otherwise set
      */
-    public void testIsTerminated() {
-	ThreadPoolExecutor p1 = new ThreadPoolExecutor(1, 1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        assertFalse(p1.isTerminated());
-        try {
-            p1.execute(new MediumRunnable());
-        } finally {
-            p1.shutdown();
+    public void testGetMaximumPoolSize() {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 3,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertEquals(3, p.getMaximumPoolSize());
+            p.setMaximumPoolSize(5);
+            assertEquals(5, p.getMaximumPoolSize());
+            p.setMaximumPoolSize(4);
+            assertEquals(4, p.getMaximumPoolSize());
+        }
+    }
+
+    /**
+     * getPoolSize increases, but doesn't overestimate, when threads
+     * become active
+     */
+    public void testGetPoolSize() throws InterruptedException {
+        final CountDownLatch done = new CountDownLatch(1);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p, done)) {
+            assertEquals(0, p.getPoolSize());
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            p.execute(new CheckedRunnable() {
+                public void realRun() throws InterruptedException {
+                    threadStarted.countDown();
+                    assertEquals(1, p.getPoolSize());
+                    await(done);
+                }});
+            await(threadStarted);
+            assertEquals(1, p.getPoolSize());
+        }
+    }
+
+    /**
+     * getTaskCount increases, but doesn't overestimate, when tasks submitted
+     */
+    public void testGetTaskCount() throws InterruptedException {
+        final int TASKS = 3;
+        final CountDownLatch done = new CountDownLatch(1);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p, done)) {
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            assertEquals(0, p.getTaskCount());
+            assertEquals(0, p.getCompletedTaskCount());
+            p.execute(new CheckedRunnable() {
+                public void realRun() throws InterruptedException {
+                    threadStarted.countDown();
+                    await(done);
+                }});
+            await(threadStarted);
+            assertEquals(1, p.getTaskCount());
+            assertEquals(0, p.getCompletedTaskCount());
+            for (int i = 0; i < TASKS; i++) {
+                assertEquals(1 + i, p.getTaskCount());
+                p.execute(new CheckedRunnable() {
+                    public void realRun() throws InterruptedException {
+                        threadStarted.countDown();
+                        assertEquals(1 + TASKS, p.getTaskCount());
+                        await(done);
+                    }});
+            }
+            assertEquals(1 + TASKS, p.getTaskCount());
+            assertEquals(0, p.getCompletedTaskCount());
         }
-	try {
-	    assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
-            assertTrue(p1.isTerminated());
-	} catch(Exception e){
-            unexpectedException();
-        }	
+        assertEquals(1 + TASKS, p.getTaskCount());
+        assertEquals(1 + TASKS, p.getCompletedTaskCount());
     }
 
     /**
-     *  isTerminating is not true when running or when terminated
+     * isShutdown is false before shutdown, true after
      */
-    public void testIsTerminating() {
-	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 {
-            p1.shutdown();
+    public void testIsShutdown() {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertFalse(p.isShutdown());
+            try { p.shutdown(); } catch (SecurityException ok) { return; }
+            assertTrue(p.isShutdown());
+        }
+    }
+
+    /**
+     * awaitTermination on a non-shutdown pool times out
+     */
+    public void testAwaitTermination_timesOut() throws InterruptedException {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertFalse(p.isTerminated());
+            assertFalse(p.awaitTermination(Long.MIN_VALUE, NANOSECONDS));
+            assertFalse(p.awaitTermination(Long.MIN_VALUE, MILLISECONDS));
+            assertFalse(p.awaitTermination(-1L, NANOSECONDS));
+            assertFalse(p.awaitTermination(-1L, MILLISECONDS));
+            assertFalse(p.awaitTermination(randomExpiredTimeout(),
+                                           randomTimeUnit()));
+            long timeoutNanos = 999999L;
+            long startTime = System.nanoTime();
+            assertFalse(p.awaitTermination(timeoutNanos, NANOSECONDS));
+            assertTrue(System.nanoTime() - startTime >= timeoutNanos);
+            assertFalse(p.isTerminated());
+            startTime = System.nanoTime();
+            long timeoutMillis = timeoutMillis();
+            assertFalse(p.awaitTermination(timeoutMillis, MILLISECONDS));
+            assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
+            assertFalse(p.isTerminated());
+            try { p.shutdown(); } catch (SecurityException ok) { return; }
+            assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
+            assertTrue(p.isTerminated());
+        }
+    }
+
+    /**
+     * isTerminated is false before termination, true after
+     */
+    public void testIsTerminated() throws InterruptedException {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            final CountDownLatch done = new CountDownLatch(1);
+            assertFalse(p.isTerminating());
+            p.execute(new CheckedRunnable() {
+                public void realRun() throws InterruptedException {
+                    assertFalse(p.isTerminating());
+                    threadStarted.countDown();
+                    await(done);
+                }});
+            await(threadStarted);
+            assertFalse(p.isTerminating());
+            done.countDown();
+            try { p.shutdown(); } catch (SecurityException ok) { return; }
+            assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
+            assertTrue(p.isTerminated());
+            assertFalse(p.isTerminating());
+        }
+    }
+
+    /**
+     * isTerminating is not true when running or when terminated
+     */
+    public void testIsTerminating() throws InterruptedException {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            final CountDownLatch done = new CountDownLatch(1);
+            assertFalse(p.isTerminating());
+            p.execute(new CheckedRunnable() {
+                public void realRun() throws InterruptedException {
+                    assertFalse(p.isTerminating());
+                    threadStarted.countDown();
+                    await(done);
+                }});
+            await(threadStarted);
+            assertFalse(p.isTerminating());
+            done.countDown();
+            try { p.shutdown(); } catch (SecurityException ok) { return; }
+            assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
+            assertTrue(p.isTerminated());
+            assertFalse(p.isTerminating());
         }
-        try {
-	    assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
-            assertTrue(p1.isTerminated());
-            assertFalse(p1.isTerminating());
-	} catch(Exception e){
-            unexpectedException();
-        }	
     }
 
     /**
      * getQueue returns the work queue, which contains queued tasks
      */
-    public void testGetQueue() {
-        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]));
-            p1.shutdownNow();
-        } catch(Exception e) {
-            unexpectedException();
-        } finally {
-            joinPool(p1);
+    public void testGetQueue() throws InterruptedException {
+        final CountDownLatch done = new CountDownLatch(1);
+        final BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(10);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   q);
+        try (PoolCleaner cleaner = cleaner(p, done)) {
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            FutureTask[] tasks = new FutureTask[5];
+            for (int i = 0; i < tasks.length; i++) {
+                Callable task = new CheckedCallable<Boolean>() {
+                    public Boolean realCall() throws InterruptedException {
+                        threadStarted.countDown();
+                        assertSame(q, p.getQueue());
+                        await(done);
+                        return Boolean.TRUE;
+                    }};
+                tasks[i] = new FutureTask(task);
+                p.execute(tasks[i]);
+            }
+            await(threadStarted);
+            assertSame(q, p.getQueue());
+            assertFalse(q.contains(tasks[0]));
+            assertTrue(q.contains(tasks[tasks.length - 1]));
+            assertEquals(tasks.length - 1, q.size());
         }
     }
 
     /**
      * remove(task) removes queued task, and fails to remove active task
      */
-    public void testRemove() {
-        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]));
+    public void testRemove() throws InterruptedException {
+        final CountDownLatch done = new CountDownLatch(1);
+        BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(10);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   q);
+        try (PoolCleaner cleaner = cleaner(p, done)) {
+            Runnable[] tasks = new Runnable[6];
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            for (int i = 0; i < tasks.length; i++) {
+                tasks[i] = new CheckedRunnable() {
+                    public void realRun() throws InterruptedException {
+                        threadStarted.countDown();
+                        await(done);
+                    }};
+                p.execute(tasks[i]);
+            }
+            await(threadStarted);
+            assertFalse(p.remove(tasks[0]));
             assertTrue(q.contains(tasks[4]));
             assertTrue(q.contains(tasks[3]));
-            assertTrue(p1.remove(tasks[4]));
-            assertFalse(p1.remove(tasks[4]));
+            assertTrue(p.remove(tasks[4]));
+            assertFalse(p.remove(tasks[4]));
             assertFalse(q.contains(tasks[4]));
             assertTrue(q.contains(tasks[3]));
-            assertTrue(p1.remove(tasks[3]));
+            assertTrue(p.remove(tasks[3]));
             assertFalse(q.contains(tasks[3]));
-            p1.shutdownNow();
-        } catch(Exception e) {
-            unexpectedException();
-        } finally {
-            joinPool(p1);
         }
     }
 
     /**
-     *   purge removes cancelled tasks from the queue
+     * purge removes cancelled tasks from the queue
      */
-    public void testPurge() {
-        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]);
+    public void testPurge() throws InterruptedException {
+        final CountDownLatch threadStarted = new CountDownLatch(1);
+        final CountDownLatch done = new CountDownLatch(1);
+        final BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(10);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   q);
+        try (PoolCleaner cleaner = cleaner(p, done)) {
+            FutureTask[] tasks = new FutureTask[5];
+            for (int i = 0; i < tasks.length; i++) {
+                Callable task = new CheckedCallable<Boolean>() {
+                    public Boolean realCall() throws InterruptedException {
+                        threadStarted.countDown();
+                        await(done);
+                        return Boolean.TRUE;
+                    }};
+                tasks[i] = new FutureTask(task);
+                p.execute(tasks[i]);
+            }
+            await(threadStarted);
+            assertEquals(tasks.length, p.getTaskCount());
+            assertEquals(tasks.length - 1, q.size());
+            assertEquals(1L, p.getActiveCount());
+            assertEquals(0L, p.getCompletedTaskCount());
+            tasks[4].cancel(true);
+            tasks[3].cancel(false);
+            p.purge();
+            assertEquals(tasks.length - 3, q.size());
+            assertEquals(tasks.length - 2, p.getTaskCount());
+            p.purge();         // Nothing to do
+            assertEquals(tasks.length - 3, q.size());
+            assertEquals(tasks.length - 2, p.getTaskCount());
         }
-        tasks[4].cancel(true);
-        tasks[3].cancel(true);
-        p1.purge();
-        long count = p1.getTaskCount();
-        assertTrue(count >= 2 && count < 5);
-        p1.shutdownNow();
-        joinPool(p1);
     }
 
     /**
-     *  shutDownNow returns a list containing tasks that were not run
-     */
-    public void testShutDownNow() {
-	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 {
-            l = p1.shutdownNow();
-        }
-	assertTrue(p1.isShutdown());
-	assertTrue(l.size() <= 4);
+     * shutdownNow returns a list containing tasks that were not run,
+     * and those tasks are drained from the queue
+     */
+    public void testShutdownNow() throws InterruptedException {
+        final int poolSize = 2;
+        final int count = 5;
+        final AtomicInteger ran = new AtomicInteger(0);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(poolSize, poolSize,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
+        Runnable waiter = new CheckedRunnable() { public void realRun() {
+            threadsStarted.countDown();
+            try {
+                MILLISECONDS.sleep(LONGER_DELAY_MS);
+            } catch (InterruptedException success) {}
+            ran.getAndIncrement();
+        }};
+        for (int i = 0; i < count; i++)
+            p.execute(waiter);
+        await(threadsStarted);
+        assertEquals(poolSize, p.getActiveCount());
+        assertEquals(0, p.getCompletedTaskCount());
+        final List<Runnable> queuedTasks;
+        try {
+            queuedTasks = p.shutdownNow();
+        } catch (SecurityException ok) {
+            return; // Allowed in case test doesn't have privs
+        }
+        assertTrue(p.isShutdown());
+        assertTrue(p.getQueue().isEmpty());
+        assertEquals(count - poolSize, queuedTasks.size());
+        assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
+        assertTrue(p.isTerminated());
+        assertEquals(poolSize, ran.get());
+        assertEquals(poolSize, p.getCompletedTaskCount());
     }
 
     // Exception Tests
-    
 
-    /** 
-     * Constructor throws if corePoolSize argument is less than zero 
+    /**
+     * Constructor throws if corePoolSize argument is less than zero
      */
     public void testConstructor1() {
         try {
-            new ThreadPoolExecutor(-1,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
+            new ThreadPoolExecutor(-1, 1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
-    
-    /** 
-     * Constructor throws if maximumPoolSize is less than zero 
+
+    /**
+     * Constructor throws if maximumPoolSize is less than zero
      */
     public void testConstructor2() {
         try {
-            new ThreadPoolExecutor(1,-1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
+            new ThreadPoolExecutor(1, -1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
-    
-    /** 
-     * Constructor throws if maximumPoolSize is equal to zero 
+
+    /**
+     * Constructor throws if maximumPoolSize is equal to zero
      */
     public void testConstructor3() {
         try {
-            new ThreadPoolExecutor(1,0,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
+            new ThreadPoolExecutor(1, 0, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if keepAliveTime is less than zero 
+    /**
+     * Constructor throws if keepAliveTime is less than zero
      */
     public void testConstructor4() {
         try {
-            new ThreadPoolExecutor(1,2,-1L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
+            new ThreadPoolExecutor(1, 2, -1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if corePoolSize is greater than the maximumPoolSize 
+    /**
+     * Constructor throws if corePoolSize is greater than the maximumPoolSize
      */
     public void testConstructor5() {
         try {
-            new ThreadPoolExecutor(2,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
+            new ThreadPoolExecutor(2, 1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
-	
-    /** 
-     * Constructor throws if workQueue is set to null 
+
+    /**
+     * Constructor throws if workQueue is set to null
      */
     public void testConstructorNullPointerException() {
         try {
-            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,null);
+            new ThreadPoolExecutor(1, 2, 1L, SECONDS,
+                                   (BlockingQueue) null);
             shouldThrow();
-        }
-        catch (NullPointerException success){}  
+        } catch (NullPointerException success) {}
     }
-    
 
-    
-    /** 
-     * Constructor throws if corePoolSize argument is less than zero 
+    /**
+     * Constructor throws if corePoolSize argument is less than zero
      */
     public void testConstructor6() {
         try {
-            new ThreadPoolExecutor(-1,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory());
+            new ThreadPoolExecutor(-1, 1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory());
             shouldThrow();
-        } catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
-    
-    /** 
-     * Constructor throws if maximumPoolSize is less than zero 
+
+    /**
+     * Constructor throws if maximumPoolSize is less than zero
      */
     public void testConstructor7() {
         try {
-            new ThreadPoolExecutor(1,-1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory());
+            new ThreadPoolExecutor(1, -1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if maximumPoolSize is equal to zero 
+    /**
+     * Constructor throws if maximumPoolSize is equal to zero
      */
     public void testConstructor8() {
         try {
-            new ThreadPoolExecutor(1,0,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory());
+            new ThreadPoolExecutor(1, 0, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if keepAliveTime is less than zero 
+    /**
+     * Constructor throws if keepAliveTime is less than zero
      */
     public void testConstructor9() {
         try {
-            new ThreadPoolExecutor(1,2,-1L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory());
+            new ThreadPoolExecutor(1, 2, -1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if corePoolSize is greater than the maximumPoolSize 
+    /**
+     * Constructor throws if corePoolSize is greater than the maximumPoolSize
      */
     public void testConstructor10() {
         try {
-            new ThreadPoolExecutor(2,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory());
+            new ThreadPoolExecutor(2, 1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if workQueue is set to null 
+    /**
+     * Constructor throws if workQueue is set to null
      */
     public void testConstructorNullPointerException2() {
         try {
-            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,null,new SimpleThreadFactory());
+            new ThreadPoolExecutor(1, 2, 1L, SECONDS,
+                                   (BlockingQueue) null,
+                                   new SimpleThreadFactory());
             shouldThrow();
-        }
-        catch (NullPointerException success){}  
+        } catch (NullPointerException success) {}
     }
 
-    /** 
-     * Constructor throws if threadFactory is set to null 
+    /**
+     * Constructor throws if threadFactory is set to null
      */
     public void testConstructorNullPointerException3() {
         try {
-            ThreadFactory f = null;
-            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10),f);
+            new ThreadPoolExecutor(1, 2, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   (ThreadFactory) null);
             shouldThrow();
-        }
-        catch (NullPointerException success){}  
+        } catch (NullPointerException success) {}
     }
- 
-    
-    /** 
-     * Constructor throws if corePoolSize argument is less than zero 
+
+    /**
+     * Constructor throws if corePoolSize argument is less than zero
      */
     public void testConstructor11() {
         try {
-            new ThreadPoolExecutor(-1,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new NoOpREHandler());
+            new ThreadPoolExecutor(-1, 1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if maximumPoolSize is less than zero 
+    /**
+     * Constructor throws if maximumPoolSize is less than zero
      */
     public void testConstructor12() {
         try {
-            new ThreadPoolExecutor(1,-1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new NoOpREHandler());
+            new ThreadPoolExecutor(1, -1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if maximumPoolSize is equal to zero 
+    /**
+     * Constructor throws if maximumPoolSize is equal to zero
      */
     public void testConstructor13() {
         try {
-            new ThreadPoolExecutor(1,0,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new NoOpREHandler());
+            new ThreadPoolExecutor(1, 0, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if keepAliveTime is less than zero 
+    /**
+     * Constructor throws if keepAliveTime is less than zero
      */
     public void testConstructor14() {
         try {
-            new ThreadPoolExecutor(1,2,-1L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new NoOpREHandler());
+            new ThreadPoolExecutor(1, 2, -1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if corePoolSize is greater than the maximumPoolSize 
+    /**
+     * Constructor throws if corePoolSize is greater than the maximumPoolSize
      */
     public void testConstructor15() {
         try {
-            new ThreadPoolExecutor(2,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new NoOpREHandler());
+            new ThreadPoolExecutor(2, 1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if workQueue is set to null 
+    /**
+     * Constructor throws if workQueue is set to null
      */
     public void testConstructorNullPointerException4() {
         try {
-            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,null,new NoOpREHandler());
+            new ThreadPoolExecutor(1, 2, 1L, SECONDS,
+                                   (BlockingQueue) null,
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (NullPointerException success){}  
+        } catch (NullPointerException success) {}
     }
 
-    /** 
-     * Constructor throws if handler is set to null 
+    /**
+     * Constructor throws if handler is set to null
      */
     public void testConstructorNullPointerException5() {
         try {
-            RejectedExecutionHandler r = null;
-            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10),r);
+            new ThreadPoolExecutor(1, 2, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   (RejectedExecutionHandler) null);
             shouldThrow();
-        }
-        catch (NullPointerException success){}  
+        } catch (NullPointerException success) {}
     }
 
-    
-    /** 
-     * Constructor throws if corePoolSize argument is less than zero 
+    /**
+     * Constructor throws if corePoolSize argument is less than zero
      */
     public void testConstructor16() {
         try {
-            new ThreadPoolExecutor(-1,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),new NoOpREHandler());
+            new ThreadPoolExecutor(-1, 1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory(),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if maximumPoolSize is less than zero 
+    /**
+     * Constructor throws if maximumPoolSize is less than zero
      */
     public void testConstructor17() {
         try {
-            new ThreadPoolExecutor(1,-1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),new NoOpREHandler());
+            new ThreadPoolExecutor(1, -1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory(),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if maximumPoolSize is equal to zero 
+    /**
+     * Constructor throws if maximumPoolSize is equal to zero
      */
     public void testConstructor18() {
         try {
-            new ThreadPoolExecutor(1,0,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),new NoOpREHandler());
+            new ThreadPoolExecutor(1, 0, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory(),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if keepAliveTime is less than zero 
+    /**
+     * Constructor throws if keepAliveTime is less than zero
      */
     public void testConstructor19() {
         try {
-            new ThreadPoolExecutor(1,2,-1L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),new NoOpREHandler());
+            new ThreadPoolExecutor(1, 2, -1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory(),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if corePoolSize is greater than the maximumPoolSize 
+    /**
+     * Constructor throws if corePoolSize is greater than the maximumPoolSize
      */
     public void testConstructor20() {
         try {
-            new ThreadPoolExecutor(2,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),new NoOpREHandler());
+            new ThreadPoolExecutor(2, 1, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory(),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (IllegalArgumentException success){}
+        } catch (IllegalArgumentException success) {}
     }
 
-    /** 
-     * Constructor throws if workQueue is set to null 
+    /**
+     * Constructor throws if workQueue is null
      */
     public void testConstructorNullPointerException6() {
         try {
-            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,null,new SimpleThreadFactory(),new NoOpREHandler());
+            new ThreadPoolExecutor(1, 2, 1L, SECONDS,
+                                   (BlockingQueue) null,
+                                   new SimpleThreadFactory(),
+                                   new NoOpREHandler());
             shouldThrow();
-        }
-        catch (NullPointerException success){}  
+        } catch (NullPointerException success) {}
     }
 
-    /** 
-     * Constructor throws if handler is set to null 
+    /**
+     * Constructor throws if handler is null
      */
     public void testConstructorNullPointerException7() {
         try {
-            RejectedExecutionHandler r = null;
-            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10),new SimpleThreadFactory(),r);
+            new ThreadPoolExecutor(1, 2, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   new SimpleThreadFactory(),
+                                   (RejectedExecutionHandler) null);
             shouldThrow();
-        }
-        catch (NullPointerException success){}  
+        } catch (NullPointerException success) {}
     }
 
-    /** 
-     * Constructor throws if ThreadFactory is set top null 
-     */
-    public void testConstructorNullPointerException8() {
-        try {
-            ThreadFactory f = null;
-            new ThreadPoolExecutor(1,2,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(10),f,new NoOpREHandler());
-            shouldThrow();
-        }
-        catch (NullPointerException successdn8){}  
-    }
-    
-
     /**
-     *  execute throws RejectedExecutionException
-     *  if saturated.
+     * Constructor throws if ThreadFactory is null
      */
-    public void testSaturatedExecute() {
-        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
+    public void testConstructorNullPointerException8() {
         try {
-            
-            for(int i = 0; i < 5; ++i){
-                p.execute(new MediumRunnable());
+            new ThreadPoolExecutor(1, 2, 1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10),
+                                   (ThreadFactory) null,
+                                   new NoOpREHandler());
+            shouldThrow();
+        } catch (NullPointerException success) {}
+    }
+
+    /**
+     * get of submitted callable throws InterruptedException if interrupted
+     */
+    public void testInterruptedSubmit() throws InterruptedException {
+        final CountDownLatch done = new CountDownLatch(1);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   60, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+
+        try (PoolCleaner cleaner = cleaner(p, done)) {
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            Thread t = newStartedThread(new CheckedInterruptedRunnable() {
+                public void realRun() throws Exception {
+                    Callable task = new CheckedCallable<Boolean>() {
+                        public Boolean realCall() throws InterruptedException {
+                            threadStarted.countDown();
+                            await(done);
+                            return Boolean.TRUE;
+                        }};
+                    p.submit(task).get();
+                }});
+
+            await(threadStarted); // ensure quiescence
+            t.interrupt();
+            awaitTermination(t);
+        }
+    }
+
+    /**
+     * Submitted tasks are rejected when saturated or shutdown
+     */
+    public void testSubmittedTasksRejectedWhenSaturatedOrShutdown() throws InterruptedException {
+        final ThreadPoolExecutor p = new ThreadPoolExecutor(
+            1, 1, 1, SECONDS, new ArrayBlockingQueue<Runnable>(1));
+        final int saturatedSize = saturatedSize(p);
+        final ThreadLocalRandom rnd = ThreadLocalRandom.current();
+        final CountDownLatch threadsStarted = new CountDownLatch(p.getMaximumPoolSize());
+        final CountDownLatch done = new CountDownLatch(1);
+        final Runnable r = () -> {
+            threadsStarted.countDown();
+            for (;;) {
+                try {
+                    done.await();
+                    return;
+                } catch (InterruptedException shutdownNowDeliberatelyIgnored) {}
+            }};
+        final Callable<Boolean> c = () -> {
+            threadsStarted.countDown();
+            for (;;) {
+                try {
+                    done.await();
+                    return Boolean.TRUE;
+                } catch (InterruptedException shutdownNowDeliberatelyIgnored) {}
+            }};
+        final boolean shutdownNow = rnd.nextBoolean();
+
+        try (PoolCleaner cleaner = cleaner(p, done)) {
+            // saturate
+            for (int i = saturatedSize; i--> 0; ) {
+                switch (rnd.nextInt(4)) {
+                case 0: p.execute(r); break;
+                case 1: assertFalse(p.submit(r).isDone()); break;
+                case 2: assertFalse(p.submit(r, Boolean.TRUE).isDone()); break;
+                case 3: assertFalse(p.submit(c).isDone()); break;
+                }
             }
-            shouldThrow();
-        } catch(RejectedExecutionException success){}
-        joinPool(p);
-    }
 
-    /**
-     *  executor using CallerRunsPolicy runs task if saturated.
-     */
-    public void testSaturatedExecute2() {
-        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);
-            }
-            p.shutdownNow();
-        } catch(RejectedExecutionException ex){
-            unexpectedException();
-        } finally {
-            joinPool(p);
-        }
-    }
+            await(threadsStarted);
+            assertTaskSubmissionsAreRejected(p);
 
-    /**
-     *  executor using DiscardPolicy drops task if saturated.
-     */
-    public void testSaturatedExecute3() {
-        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);
-            }
-            p.shutdownNow();
-        } catch(RejectedExecutionException ex){
-            unexpectedException();
-        } finally {
-            joinPool(p);
-        }
+            if (shutdownNow)
+                p.shutdownNow();
+            else
+                p.shutdown();
+            // Pool is shutdown, but not yet terminated
+            assertTaskSubmissionsAreRejected(p);
+            assertFalse(p.isTerminated());
+
+            done.countDown();   // release blocking tasks
+            assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
+
+            assertTaskSubmissionsAreRejected(p);
+        }
+        assertEquals(saturatedSize(p)
+                     - (shutdownNow ? p.getQueue().remainingCapacity() : 0),
+                     p.getCompletedTaskCount());
     }
 
     /**
-     *  executor using DiscardOldestPolicy drops oldest task if saturated.
-     */
-    public void testSaturatedExecute4() {
-        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();
+     * executor using DiscardOldestPolicy drops oldest task if saturated.
+     */
+    public void testSaturatedExecute_DiscardOldestPolicy() {
+        final CountDownLatch done = new CountDownLatch(1);
+        LatchAwaiter r1 = awaiter(done);
+        LatchAwaiter r2 = awaiter(done);
+        LatchAwaiter r3 = awaiter(done);
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(1),
+                                   new DiscardOldestPolicy());
+        try (PoolCleaner cleaner = cleaner(p, done)) {
+            assertEquals(LatchAwaiter.NEW, r1.state);
+            assertEquals(LatchAwaiter.NEW, r2.state);
+            assertEquals(LatchAwaiter.NEW, r3.state);
+            p.execute(r1);
             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));
-            p.shutdownNow();
-        } catch(RejectedExecutionException ex){
-            unexpectedException();
-        } finally {
-            joinPool(p);
         }
+        assertEquals(LatchAwaiter.DONE, r1.state);
+        assertEquals(LatchAwaiter.NEW, r2.state);
+        assertEquals(LatchAwaiter.DONE, r3.state);
     }
 
     /**
-     *  execute throws RejectedExecutionException if shutdown
-     */
-    public void testRejectedExecutionExceptionOnShutdown() {
-        ThreadPoolExecutor tpe = 
-            new ThreadPoolExecutor(1,1,LONG_DELAY_MS, TimeUnit.MILLISECONDS,new ArrayBlockingQueue<Runnable>(1));
-        tpe.shutdown();
-	try {
-	    tpe.execute(new NoOpRunnable());
-	    shouldThrow();
-	} catch(RejectedExecutionException success){}
-	
-	joinPool(tpe);
-    }
-
-    /**
-     *  execute using CallerRunsPolicy drops task on shutdown
+     * execute using DiscardOldestPolicy drops task on shutdown
      */
-    public void testCallerRunsOnShutdown() {
-        RejectedExecutionHandler h = new ThreadPoolExecutor.CallerRunsPolicy();
-        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1), h);
+    public void testDiscardOldestOnShutdown() {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(1),
+                                   new DiscardOldestPolicy());
 
-        p.shutdown();
-	try {
+        try { p.shutdown(); } catch (SecurityException ok) { return; }
+        try (PoolCleaner cleaner = cleaner(p)) {
             TrackedNoOpRunnable r = new TrackedNoOpRunnable();
-	    p.execute(r);
+            p.execute(r);
             assertFalse(r.done);
-	} catch(RejectedExecutionException success){
-            unexpectedException();
-        } finally {
-            joinPool(p);
         }
     }
 
     /**
-     *  execute using DiscardPolicy drops task on shutdown
+     * Submitting null tasks throws NullPointerException
      */
-    public void testDiscardOnShutdown() {
-        RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardPolicy();
-        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1), h);
-
-        p.shutdown();
-	try {
-            TrackedNoOpRunnable r = new TrackedNoOpRunnable();
-	    p.execute(r);
-            assertFalse(r.done);
-	} catch(RejectedExecutionException success){
-            unexpectedException();
-        } finally {
-            joinPool(p);
+    public void testNullTaskSubmission() {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 2,
+                                   1L, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertNullTaskSubmissionThrowsNullPointerException(p);
         }
     }
 
-
     /**
-     *  execute using DiscardOldestPolicy drops task on shutdown
+     * setCorePoolSize of negative value throws IllegalArgumentException
      */
-    public void testDiscardOldestOnShutdown() {
-        RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardOldestPolicy();
-        ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1), h);
-
-        p.shutdown();
-	try {
-            TrackedNoOpRunnable r = new TrackedNoOpRunnable();
-	    p.execute(r);
-            assertFalse(r.done);
-	} catch(RejectedExecutionException success){
-            unexpectedException();
-        } finally {
-            joinPool(p);
+    public void testCorePoolSizeIllegalArgumentException() {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            try {
+                p.setCorePoolSize(-1);
+                shouldThrow();
+            } catch (IllegalArgumentException success) {}
         }
     }
 
-
-    /**
-     *  execute (null) throws NPE
-     */
-    public void testExecuteNull() {
-        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);
-    }
-    
     /**
-     *  setCorePoolSize of negative value throws IllegalArgumentException
+     * setMaximumPoolSize(int) throws IllegalArgumentException if
+     * given a value less the core pool size
      */
-    public void testCorePoolSizeIllegalArgumentException() {
-	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 {
-            tpe.shutdown();
-        }
-        joinPool(tpe);
-    }   
-
-    /**
-     *  setMaximumPoolSize(int) throws IllegalArgumentException if
-     *  given a value less the core pool size
-     */  
     public void testMaximumPoolSizeIllegalArgumentException() {
-        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 {
-            tpe.shutdown();
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 3,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            try {
+                p.setMaximumPoolSize(1);
+                shouldThrow();
+            } catch (IllegalArgumentException success) {}
         }
-        joinPool(tpe);
     }
-    
+
     /**
-     *  setMaximumPoolSize throws IllegalArgumentException
-     *  if given a negative value
+     * setMaximumPoolSize throws IllegalArgumentException
+     * if given a negative value
      */
     public void testMaximumPoolSizeIllegalArgumentException2() {
-        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 {
-            tpe.shutdown();
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 3,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            try {
+                p.setMaximumPoolSize(-1);
+                shouldThrow();
+            } catch (IllegalArgumentException success) {}
+        }
+    }
+
+    /**
+     * Configuration changes that allow core pool size greater than
+     * max pool size result in IllegalArgumentException.
+     */
+    public void testPoolSizeInvariants() {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            for (int s = 1; s < 5; s++) {
+                p.setMaximumPoolSize(s);
+                p.setCorePoolSize(s);
+                try {
+                    p.setMaximumPoolSize(s - 1);
+                    shouldThrow();
+                } catch (IllegalArgumentException success) {}
+                assertEquals(s, p.getCorePoolSize());
+                assertEquals(s, p.getMaximumPoolSize());
+                try {
+                    p.setCorePoolSize(s + 1);
+                    shouldThrow();
+                } catch (IllegalArgumentException success) {}
+                assertEquals(s, p.getCorePoolSize());
+                assertEquals(s, p.getMaximumPoolSize());
+            }
         }
-        joinPool(tpe);
     }
-    
 
     /**
-     *  setKeepAliveTime  throws IllegalArgumentException
-     *  when given a negative value
+     * setKeepAliveTime throws IllegalArgumentException
+     * when given a negative value
      */
     public void testKeepAliveTimeIllegalArgumentException() {
-	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 {
-            tpe.shutdown();
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 3,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            try {
+                p.setKeepAliveTime(-1, MILLISECONDS);
+                shouldThrow();
+            } catch (IllegalArgumentException success) {}
         }
-        joinPool(tpe);
     }
 
     /**
      * terminated() is called on termination
      */
     public void testTerminated() {
-        ExtendedTPE tpe = new ExtendedTPE();
-        tpe.shutdown();
-        assertTrue(tpe.terminatedCalled);
-        joinPool(tpe);
+        ExtendedTPE p = new ExtendedTPE();
+        try (PoolCleaner cleaner = cleaner(p)) {
+            try { p.shutdown(); } catch (SecurityException ok) { return; }
+            assertTrue(p.terminatedCalled());
+            assertTrue(p.isShutdown());
+        }
     }
 
     /**
      * beforeExecute and afterExecute are called when executing task
      */
-    public void testBeforeAfter() {
-        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);
-            tpe.shutdown();
-        }
-        catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(tpe);
+    public void testBeforeAfter() throws InterruptedException {
+        ExtendedTPE p = new ExtendedTPE();
+        try (PoolCleaner cleaner = cleaner(p)) {
+            final CountDownLatch done = new CountDownLatch(1);
+            p.execute(new CheckedRunnable() {
+                public void realRun() {
+                    done.countDown();
+                }});
+            await(p.afterCalled);
+            assertEquals(0, done.getCount());
+            assertTrue(p.afterCalled());
+            assertTrue(p.beforeCalled());
         }
     }
 
     /**
      * completed submit of callable returns result
      */
-    public void testSubmitCallable() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
+    public void testSubmitCallable() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
             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);
-        }
     }
 
     /**
      * completed submit of runnable returns successfully
      */
-    public void testSubmitRunnable() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
+    public void testSubmitRunnable() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
             Future<?> future = e.submit(new NoOpRunnable());
             future.get();
             assertTrue(future.isDone());
         }
-        catch (ExecutionException ex) {
-            unexpectedException();
-        }
-        catch (InterruptedException ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
-        }
     }
 
     /**
      * completed submit of (runnable, result) returns result
      */
-    public void testSubmitRunnable2() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
+    public void testSubmitRunnable2() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
             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);
-        }
     }
 
-
-
-
-
     /**
      * invokeAny(null) throws NPE
      */
-    public void testInvokeAny1() {
-        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 void testInvokeAny1() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            try {
+                e.invokeAny(null);
+                shouldThrow();
+            } catch (NullPointerException success) {}
         }
     }
 
     /**
-     * invokeAny(empty collection) throws IAE
-     */
-    public void testInvokeAny2() {
-        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);
+     * invokeAny(empty collection) throws IllegalArgumentException
+     */
+    public void testInvokeAny2() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            try {
+                e.invokeAny(new ArrayList<Callable<String>>());
+                shouldThrow();
+            } catch (IllegalArgumentException success) {}
         }
     }
 
     /**
      * invokeAny(c) throws NPE if c has null elements
      */
-    public void testInvokeAny3() {
-        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());
+    public void testInvokeAny3() throws Exception {
+        final CountDownLatch latch = new CountDownLatch(1);
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
+            l.add(latchAwaitingStringTask(latch));
             l.add(null);
-            e.invokeAny(l);
-        } catch (NullPointerException success) {
-        } catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
+            try {
+                e.invokeAny(l);
+                shouldThrow();
+            } catch (NullPointerException success) {}
+            latch.countDown();
         }
     }
 
     /**
      * invokeAny(c) throws ExecutionException if no task completes
      */
-    public void testInvokeAny4() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testInvokeAny4() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
             l.add(new NPETask());
-            e.invokeAny(l);
-        } catch (ExecutionException success) {
-        } catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
+            try {
+                e.invokeAny(l);
+                shouldThrow();
+            } catch (ExecutionException success) {
+                assertTrue(success.getCause() instanceof NullPointerException);
+            }
         }
     }
 
     /**
      * invokeAny(c) returns result of some task
      */
-    public void testInvokeAny5() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testInvokeAny5() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
             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);
         }
     }
 
     /**
      * invokeAll(null) throws NPE
      */
-    public void testInvokeAll1() {
-        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 void testInvokeAll1() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            try {
+                e.invokeAll(null);
+                shouldThrow();
+            } catch (NullPointerException success) {}
         }
     }
 
     /**
-     * invokeAll(empty collection) returns empty collection
-     */
-    public void testInvokeAll2() {
-        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>>());
+     * invokeAll(empty collection) returns empty list
+     */
+    public void testInvokeAll2() throws InterruptedException {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        final Collection<Callable<String>> emptyCollection
+            = Collections.emptyList();
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Future<String>> r = e.invokeAll(emptyCollection);
             assertTrue(r.isEmpty());
-        } catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
         }
     }
 
     /**
      * invokeAll(c) throws NPE if c has null elements
      */
-    public void testInvokeAll3() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testInvokeAll3() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
             l.add(new StringTask());
             l.add(null);
-            e.invokeAll(l);
-        } catch (NullPointerException success) {
-        } catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
+            try {
+                e.invokeAll(l);
+                shouldThrow();
+            } catch (NullPointerException success) {}
         }
     }
 
     /**
      * get of element of invokeAll(c) throws exception on failed task
      */
-    public void testInvokeAll4() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testInvokeAll4() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
             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);
+            List<Future<String>> futures = e.invokeAll(l);
+            assertEquals(1, futures.size());
+            try {
+                futures.get(0).get();
+                shouldThrow();
+            } catch (ExecutionException success) {
+                assertTrue(success.getCause() instanceof NullPointerException);
+            }
         }
     }
 
     /**
      * invokeAll(c) returns results of all completed tasks
      */
-    public void testInvokeAll5() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testInvokeAll5() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
             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);
+            List<Future<String>> futures = e.invokeAll(l);
+            assertEquals(2, futures.size());
+            for (Future<String> future : futures)
+                assertSame(TEST_STRING, future.get());
         }
     }
 
-
-
     /**
      * timed invokeAny(null) throws NPE
      */
-    public void testTimedInvokeAny1() {
-        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 void testTimedInvokeAny1() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            try {
+                e.invokeAny(null, randomTimeout(), randomTimeUnit());
+                shouldThrow();
+            } catch (NullPointerException success) {}
         }
     }
 
     /**
      * timed invokeAny(,,null) throws NPE
      */
-    public void testTimedInvokeAnyNullTimeUnit() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testTimedInvokeAnyNullTimeUnit() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
             l.add(new StringTask());
-            e.invokeAny(l, MEDIUM_DELAY_MS, null);
-        } catch (NullPointerException success) {
-        } catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
+            try {
+                e.invokeAny(l, randomTimeout(), null);
+                shouldThrow();
+            } catch (NullPointerException success) {}
         }
     }
 
     /**
-     * timed invokeAny(empty collection) throws IAE
+     * timed invokeAny(empty collection) throws IllegalArgumentException
      */
-    public void testTimedInvokeAny2() {
-        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 void testTimedInvokeAny2() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            try {
+                e.invokeAny(new ArrayList<Callable<String>>(),
+                            randomTimeout(), randomTimeUnit());
+                shouldThrow();
+            } catch (IllegalArgumentException success) {}
         }
     }
 
     /**
-     * timed invokeAny(c) throws NPE if c has null elements
+     * timed invokeAny(c) throws NullPointerException if c has null elements
      */
-    public void testTimedInvokeAny3() {
-        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());
+    public void testTimedInvokeAny3() throws Exception {
+        final CountDownLatch latch = new CountDownLatch(1);
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
+            l.add(latchAwaitingStringTask(latch));
             l.add(null);
-            e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
-        } catch (NullPointerException success) {
-        } catch(Exception ex) {
-            ex.printStackTrace();
-            unexpectedException();
-        } finally {
-            joinPool(e);
+            try {
+                e.invokeAny(l, randomTimeout(), randomTimeUnit());
+                shouldThrow();
+            } catch (NullPointerException success) {}
+            latch.countDown();
         }
     }
 
     /**
      * timed invokeAny(c) throws ExecutionException if no task completes
      */
-    public void testTimedInvokeAny4() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testTimedInvokeAny4() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            long startTime = System.nanoTime();
+            List<Callable<String>> l = new ArrayList<>();
             l.add(new NPETask());
-            e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
-        } catch(ExecutionException success) {
-        } catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
+            try {
+                e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
+                shouldThrow();
+            } catch (ExecutionException success) {
+                assertTrue(success.getCause() instanceof NullPointerException);
+            }
+            assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
         }
     }
 
     /**
      * timed invokeAny(c) returns result of some task
      */
-    public void testTimedInvokeAny5() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testTimedInvokeAny5() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            long startTime = System.nanoTime();
+            List<Callable<String>> l = new ArrayList<>();
             l.add(new StringTask());
             l.add(new StringTask());
-            String result = e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
+            String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
             assertSame(TEST_STRING, result);
-        } catch (ExecutionException success) {
-        } catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
+            assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
         }
     }
 
     /**
      * timed invokeAll(null) throws NPE
      */
-    public void testTimedInvokeAll1() {
-        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 void testTimedInvokeAll1() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            try {
+                e.invokeAll(null, randomTimeout(), randomTimeUnit());
+                shouldThrow();
+            } catch (NullPointerException success) {}
         }
     }
 
     /**
      * timed invokeAll(,,null) throws NPE
      */
-    public void testTimedInvokeAllNullTimeUnit() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testTimedInvokeAllNullTimeUnit() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
             l.add(new StringTask());
-            e.invokeAll(l, MEDIUM_DELAY_MS, null);
-        } catch (NullPointerException success) {
-        } catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
+            try {
+                e.invokeAll(l, randomTimeout(), null);
+                shouldThrow();
+            } catch (NullPointerException success) {}
         }
     }
 
     /**
-     * timed invokeAll(empty collection) returns empty collection
-     */
-    public void testTimedInvokeAll2() {
-        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);
+     * timed invokeAll(empty collection) returns empty list
+     */
+    public void testTimedInvokeAll2() throws InterruptedException {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        final Collection<Callable<String>> emptyCollection
+            = Collections.emptyList();
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Future<String>> r =
+                e.invokeAll(emptyCollection, randomTimeout(), randomTimeUnit());
             assertTrue(r.isEmpty());
-        } catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
         }
     }
 
     /**
      * timed invokeAll(c) throws NPE if c has null elements
      */
-    public void testTimedInvokeAll3() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testTimedInvokeAll3() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
             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);
+            try {
+                e.invokeAll(l, randomTimeout(), randomTimeUnit());
+                shouldThrow();
+            } catch (NullPointerException success) {}
         }
     }
 
     /**
      * get of element of invokeAll(c) throws exception on failed task
      */
-    public void testTimedInvokeAll4() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testTimedInvokeAll4() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
             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);
+            List<Future<String>> futures =
+                e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
+            assertEquals(1, futures.size());
+            try {
+                futures.get(0).get();
+                shouldThrow();
+            } catch (ExecutionException success) {
+                assertTrue(success.getCause() instanceof NullPointerException);
+            }
         }
     }
 
     /**
      * timed invokeAll(c) returns results of all completed tasks
      */
-    public void testTimedInvokeAll5() {
-        ExecutorService e = new ThreadPoolExecutor(2, 2, LONG_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
-        try {
-            ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
+    public void testTimedInvokeAll5() throws Exception {
+        final ExecutorService e =
+            new ThreadPoolExecutor(2, 2,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(e)) {
+            List<Callable<String>> l = new ArrayList<>();
             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);
+            List<Future<String>> futures =
+                e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
+            assertEquals(2, futures.size());
+            for (Future<String> future : futures)
+                assertSame(TEST_STRING, future.get());
         }
     }
 
     /**
      * timed invokeAll(c) cancels tasks not completed by timeout
      */
-    public void testTimedInvokeAll6() {
-        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));
-            List<Future<String>> result = e.invokeAll(l, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
-            assertEquals(2, result.size());
-            Iterator<Future<String>> it = result.iterator(); 
-            Future<String> f1 = it.next();
-            Future<String> f2 = it.next();
-            assertTrue(f1.isDone());
-            assertFalse(f1.isCancelled());
-            assertTrue(f2.isDone());
-            assertTrue(f2.isCancelled());
-        } catch(Exception ex) {
-            unexpectedException();
-        } finally {
-            joinPool(e);
+    public void testTimedInvokeAll6() throws Exception {
+        for (long timeout = timeoutMillis();;) {
+            final CountDownLatch done = new CountDownLatch(1);
+            final Callable<String> waiter = new CheckedCallable<String>() {
+                public String realCall() {
+                    try { done.await(LONG_DELAY_MS, MILLISECONDS); }
+                    catch (InterruptedException ok) {}
+                    return "1"; }};
+            final ExecutorService p =
+                new ThreadPoolExecutor(2, 2,
+                                       LONG_DELAY_MS, MILLISECONDS,
+                                       new ArrayBlockingQueue<Runnable>(10));
+            try (PoolCleaner cleaner = cleaner(p, done)) {
+                List<Callable<String>> tasks = new ArrayList<>();
+                tasks.add(new StringTask("0"));
+                tasks.add(waiter);
+                tasks.add(new StringTask("2"));
+                long startTime = System.nanoTime();
+                List<Future<String>> futures =
+                    p.invokeAll(tasks, timeout, MILLISECONDS);
+                assertEquals(tasks.size(), futures.size());
+                assertTrue(millisElapsedSince(startTime) >= timeout);
+                for (Future future : futures)
+                    assertTrue(future.isDone());
+                assertTrue(futures.get(1).isCancelled());
+                try {
+                    assertEquals("0", futures.get(0).get());
+                    assertEquals("2", futures.get(2).get());
+                    break;
+                } catch (CancellationException retryWithLongerTimeout) {
+                    timeout *= 2;
+                    if (timeout >= LONG_DELAY_MS / 2)
+                        fail("expected exactly one task to be cancelled");
+                }
+            }
         }
     }
 
+    /**
+     * Execution continues if there is at least one thread even if
+     * thread factory fails to create more
+     */
+    public void testFailingThreadFactory() throws InterruptedException {
+        final ExecutorService e =
+            new ThreadPoolExecutor(100, 100,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new LinkedBlockingQueue<Runnable>(),
+                                   new FailingThreadFactory());
+        try (PoolCleaner cleaner = cleaner(e)) {
+            final int TASKS = 100;
+            final CountDownLatch done = new CountDownLatch(TASKS);
+            for (int k = 0; k < TASKS; ++k)
+                e.execute(new CheckedRunnable() {
+                    public void realRun() {
+                        done.countDown();
+                    }});
+            await(done);
+        }
+    }
+
+    /**
+     * allowsCoreThreadTimeOut is by default false.
+     */
+    public void testAllowsCoreThreadTimeOut() {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 2,
+                                   1000, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertFalse(p.allowsCoreThreadTimeOut());
+        }
+    }
+
+    /**
+     * allowCoreThreadTimeOut(true) causes idle threads to time out
+     */
+    public void testAllowCoreThreadTimeOut_true() throws Exception {
+        long keepAliveTime = timeoutMillis();
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 10,
+                                   keepAliveTime, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            p.allowCoreThreadTimeOut(true);
+            p.execute(new CheckedRunnable() {
+                public void realRun() {
+                    threadStarted.countDown();
+                    assertEquals(1, p.getPoolSize());
+                }});
+            await(threadStarted);
+            delay(keepAliveTime);
+            long startTime = System.nanoTime();
+            while (p.getPoolSize() > 0
+                   && millisElapsedSince(startTime) < LONG_DELAY_MS)
+                Thread.yield();
+            assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
+            assertEquals(0, p.getPoolSize());
+        }
+    }
+
+    /**
+     * allowCoreThreadTimeOut(false) causes idle threads not to time out
+     */
+    public void testAllowCoreThreadTimeOut_false() throws Exception {
+        long keepAliveTime = timeoutMillis();
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(2, 10,
+                                   keepAliveTime, MILLISECONDS,
+                                   new ArrayBlockingQueue<Runnable>(10));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            final CountDownLatch threadStarted = new CountDownLatch(1);
+            p.allowCoreThreadTimeOut(false);
+            p.execute(new CheckedRunnable() {
+                public void realRun() throws InterruptedException {
+                    threadStarted.countDown();
+                    assertTrue(p.getPoolSize() >= 1);
+                }});
+            delay(2 * keepAliveTime);
+            assertTrue(p.getPoolSize() >= 1);
+        }
+    }
+
+    /**
+     * execute allows the same task to be submitted multiple times, even
+     * if rejected
+     */
+    public void testRejectedRecycledTask() throws InterruptedException {
+        final int nTasks = 1000;
+        final CountDownLatch done = new CountDownLatch(nTasks);
+        final Runnable recycledTask = new Runnable() {
+            public void run() {
+                done.countDown();
+            }};
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 30,
+                                   60, SECONDS,
+                                   new ArrayBlockingQueue(30));
+        try (PoolCleaner cleaner = cleaner(p)) {
+            for (int i = 0; i < nTasks; ++i) {
+                for (;;) {
+                    try {
+                        p.execute(recycledTask);
+                        break;
+                    }
+                    catch (RejectedExecutionException ignore) {}
+                }
+            }
+            // enough time to run all tasks
+            await(done, nTasks * SHORT_DELAY_MS);
+        }
+    }
+
+    /**
+     * get(cancelled task) throws CancellationException
+     */
+    public void testGet_cancelled() throws Exception {
+        final CountDownLatch done = new CountDownLatch(1);
+        final ExecutorService e =
+            new ThreadPoolExecutor(1, 1,
+                                   LONG_DELAY_MS, MILLISECONDS,
+                                   new LinkedBlockingQueue<Runnable>());
+        try (PoolCleaner cleaner = cleaner(e, done)) {
+            final CountDownLatch blockerStarted = new CountDownLatch(1);
+            final List<Future<?>> futures = new ArrayList<>();
+            for (int i = 0; i < 2; i++) {
+                Runnable r = new CheckedRunnable() { public void realRun()
+                                                         throws Throwable {
+                    blockerStarted.countDown();
+                    assertTrue(done.await(2 * LONG_DELAY_MS, MILLISECONDS));
+                }};
+                futures.add(e.submit(r));
+            }
+            await(blockerStarted);
+            for (Future<?> future : futures) future.cancel(false);
+            for (Future<?> future : futures) {
+                try {
+                    future.get();
+                    shouldThrow();
+                } catch (CancellationException success) {}
+                try {
+                    future.get(LONG_DELAY_MS, MILLISECONDS);
+                    shouldThrow();
+                } catch (CancellationException success) {}
+                assertTrue(future.isCancelled());
+                assertTrue(future.isDone());
+            }
+        }
+    }
+
+    /** Directly test simple ThreadPoolExecutor RejectedExecutionHandlers. */
+    public void testStandardRejectedExecutionHandlers() {
+        final ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1, 1, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(1));
+        final AtomicReference<Thread> thread = new AtomicReference<>();
+        final Runnable r = new Runnable() { public void run() {
+            thread.set(Thread.currentThread()); }};
+
+        try {
+            new AbortPolicy().rejectedExecution(r, p);
+            shouldThrow();
+        } catch (RejectedExecutionException success) {}
+        assertNull(thread.get());
+
+        new DiscardPolicy().rejectedExecution(r, p);
+        assertNull(thread.get());
+
+        new CallerRunsPolicy().rejectedExecution(r, p);
+        assertSame(Thread.currentThread(), thread.get());
+
+        // check that pool was not perturbed by handlers
+        assertTrue(p.getRejectedExecutionHandler() instanceof AbortPolicy);
+        assertEquals(0, p.getTaskCount());
+        assertTrue(p.getQueue().isEmpty());
+    }
+
+    public void testThreadFactoryReturnsTerminatedThread_shouldThrow() {
+        if (!testImplementationDetails)
+            return;
+
+        ThreadFactory returnsTerminatedThread = runnableIgnored -> {
+            Thread thread = new Thread(() -> {});
+            thread.start();
+            try { thread.join(); }
+            catch (InterruptedException ex) { throw new Error(ex); }
+            return thread;
+        };
+        ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1, 1, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(1),
+                                   returnsTerminatedThread);
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertThrows(IllegalThreadStateException.class,
+                         () -> p.execute(() -> {}));
+        }
+    }
+
+    public void testThreadFactoryReturnsStartedThread_shouldThrow() {
+        if (!testImplementationDetails)
+            return;
+
+        CountDownLatch latch = new CountDownLatch(1);
+        Runnable awaitLatch = () -> {
+            try { latch.await(); }
+            catch (InterruptedException ex) { throw new Error(ex); }};
+        ThreadFactory returnsStartedThread = runnable -> {
+            Thread thread = new Thread(awaitLatch);
+            thread.start();
+            return thread;
+        };
+        ThreadPoolExecutor p =
+            new ThreadPoolExecutor(1, 1, 1, SECONDS,
+                                   new ArrayBlockingQueue<Runnable>(1),
+                                   returnsStartedThread);
+        try (PoolCleaner cleaner = cleaner(p)) {
+            assertThrows(IllegalThreadStateException.class,
+                         () -> p.execute(() -> {}));
+            latch.countDown();
+        }
+    }
 
 }