concurrent/src/test/java/JSR166TestCase.java - platform/external/apache-harmony - Git at Google

 /*
  * Written by Doug Lea with assistance from members of JCP JSR-166
  * Expert Group and released to the public domain, as explained at
  * http://creativecommons.org/licenses/publicdomain
  * Other contributors include Andrew Wright, Jeffrey Hayes,
  * Pat Fisher, Mike Judd.
  */

 import junit.framework.*;
 import java.util.*;
 import java.util.concurrent.*;
 import java.io.*;
 import java.security.*;

 /**
  * Base class for JSR166 Junit TCK tests.  Defines some constants,
  * utility methods and classes, as well as a simple framework for
  * helping to make sure that assertions failing in generated threads
  * cause the associated test that generated them to itself fail (which
  * JUnit does not otherwise arrange).  The rules for creating such
  * tests are:
  *
  * <ol>
  *
  * <li> All assertions in code running in generated threads must use
  * the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
  * #threadAssertEquals}, or {@link #threadAssertNull}, (not
  * <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
  * particularly recommended) for other code to use these forms too.
  * Only the most typically used JUnit assertion methods are defined
  * this way, but enough to live with.</li>
  *
  * <li> If you override {@link #setUp} or {@link #tearDown}, make sure
  * to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
  * them. These methods are used to clear and check for thread
  * assertion failures.</li>
  *
  * <li>All delays and timeouts must use one of the constants <tt>
  * SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
  * <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
  * discriminable from zero time, and always allows enough time for the
  * small amounts of computation (creating a thread, calling a few
  * methods, etc) needed to reach a timeout point. Similarly, a SMALL
  * is always discriminable as larger than SHORT and smaller than
  * MEDIUM.  And so on. These constants are set to conservative values,
  * but even so, if there is ever any doubt, they can all be increased
  * in one spot to rerun tests on slower platforms.</li>
  *
  * <li> All threads generated must be joined inside each test case
  * method (or <tt>fail</tt> to do so) before returning from the
  * method. The <tt> joinPool</tt> method can be used to do this when
  * using Executors.</li>
  *
  * </ol>
  *
  * <p> <b>Other notes</b>
  * <ul>
  *
  * <li> Usually, there is one testcase method per JSR166 method
  * covering "normal" operation, and then as many exception-testing
  * methods as there are exceptions the method can throw. Sometimes
  * there are multiple tests per JSR166 method when the different
  * "normal" behaviors differ significantly. And sometimes testcases
  * cover multiple methods when they cannot be tested in
  * isolation.</li>
  *
  * <li> The documentation style for testcases is to provide as javadoc
  * a simple sentence or two describing the property that the testcase
  * method purports to test. The javadocs do not say anything about how
  * the property is tested. To find out, read the code.</li>
  *
  * <li> These tests are "conformance tests", and do not attempt to
  * test throughput, latency, scalability or other performance factors
  * (see the separate "jtreg" tests for a set intended to check these
  * for the most central aspects of functionality.) So, most tests use
  * the smallest sensible numbers of threads, collection sizes, etc
  * needed to check basic conformance.</li>
  *
  * <li>The test classes currently do not declare inclusion in
  * any particular package to simplify things for people integrating
  * them in TCK test suites.</li>
  *
  * <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
  * runs all JSR166 unit tests.</li>
  *
  * </ul>
  */
 public class JSR166TestCase extends TestCase {
     /**
      * Runs all JSR166 unit tests using junit.textui.TestRunner
      */
     public static void main (String[] args) {
         int iters = 1;
         if (args.length > 0)
             iters = Integer.parseInt(args[0]);
         Test s = suite();
         for (int i = 0; i < iters; ++i) {
             junit.textui.TestRunner.run (s);
             System.gc();
             System.runFinalization();
         }
         System.exit(0);
     }

     /**
      * Collects all JSR166 unit tests as one suite
      */
     public static Test suite ( ) {
         TestSuite suite = new TestSuite("JSR166 Unit Tests");

         suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
         suite.addTest(new TestSuite(AbstractQueueTest.class));
         suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
         suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
         suite.addTest(new TestSuite(AtomicBooleanTest.class));
         suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
         suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
         suite.addTest(new TestSuite(AtomicIntegerTest.class));
         suite.addTest(new TestSuite(AtomicLongArrayTest.class));
         suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
         suite.addTest(new TestSuite(AtomicLongTest.class));
         suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
         suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
         suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
         suite.addTest(new TestSuite(AtomicReferenceTest.class));
         suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
         suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
         suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
         suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
         suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
         suite.addTest(new TestSuite(CountDownLatchTest.class));
         suite.addTest(new TestSuite(CyclicBarrierTest.class));
         suite.addTest(new TestSuite(DelayQueueTest.class));
         suite.addTest(new TestSuite(ExchangerTest.class));
         suite.addTest(new TestSuite(ExecutorsTest.class));
         suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
         suite.addTest(new TestSuite(FutureTaskTest.class));
         suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
         suite.addTest(new TestSuite(LinkedListTest.class));
         suite.addTest(new TestSuite(LockSupportTest.class));
         suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
         suite.addTest(new TestSuite(PriorityQueueTest.class));
         suite.addTest(new TestSuite(ReentrantLockTest.class));
         suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
         suite.addTest(new TestSuite(ScheduledExecutorTest.class));
         suite.addTest(new TestSuite(SemaphoreTest.class));
         suite.addTest(new TestSuite(SynchronousQueueTest.class));
         suite.addTest(new TestSuite(SystemTest.class));
         suite.addTest(new TestSuite(ThreadLocalTest.class));
         suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
         suite.addTest(new TestSuite(ThreadTest.class));
         suite.addTest(new TestSuite(TimeUnitTest.class));

         return suite;
     }


     public static long SHORT_DELAY_MS;
     public static long SMALL_DELAY_MS;
     public static long MEDIUM_DELAY_MS;
     public static long LONG_DELAY_MS;


     /**
      * Returns the shortest timed delay. This could
      * be reimplemented to use for example a Property.
      */
     protected long getShortDelay() {
         return 50;
     }


     /**
      * Sets delays as multiples of SHORT_DELAY.
      */
     protected  void setDelays() {
         SHORT_DELAY_MS = getShortDelay();
         SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
         MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
         LONG_DELAY_MS = SHORT_DELAY_MS * 50;
     }

     /**
      * Flag set true if any threadAssert methods fail
      */
     volatile boolean threadFailed;

     /**
      * Initializes test to indicate that no thread assertions have failed
      */
     public void setUp() {
         setDelays();
         threadFailed = false;
     }

     /**
      * Triggers test case failure if any thread assertions have failed
      */
     public void tearDown() {
         assertFalse(threadFailed);
     }

     /**
      * Fail, also setting status to indicate current testcase should fail
      */
     public void threadFail(String reason) {
         threadFailed = true;
         fail(reason);
     }

     /**
      * If expression not true, set status to indicate current testcase
      * should fail
      */
     public void threadAssertTrue(boolean b) {
         if (!b) {
             threadFailed = true;
             assertTrue(b);
         }
     }

     /**
      * If expression not false, set status to indicate current testcase
      * should fail
      */
     public void threadAssertFalse(boolean b) {
         if (b) {
             threadFailed = true;
             assertFalse(b);
         }
     }

     /**
      * If argument not null, set status to indicate current testcase
      * should fail
      */
     public void threadAssertNull(Object x) {
         if (x != null) {
             threadFailed = true;
             assertNull(x);
         }
     }

     /**
      * If arguments not equal, set status to indicate current testcase
      * should fail
      */
     public void threadAssertEquals(long x, long y) {
         if (x != y) {
             threadFailed = true;
             assertEquals(x, y);
         }
     }

     /**
      * If arguments not equal, set status to indicate current testcase
      * should fail
      */
     public void threadAssertEquals(Object x, Object y) {
         if (x != y && (x == null || !x.equals(y))) {
             threadFailed = true;
             assertEquals(x, y);
         }
     }

     /**
      * threadFail with message "should throw exception"
      */
     public void threadShouldThrow() {
        try {
            threadFailed = true;
            fail("should throw exception");
        } catch (AssertionFailedError e) {
            e.printStackTrace();
            throw e;
        }
     }

     /**
      * threadFail with message "Unexpected exception"
      */
     public void threadUnexpectedException() {
         threadFailed = true;
         fail("Unexpected exception");
     }

     /**
      * threadFail with message "Unexpected exception", with argument
      */
     public void threadUnexpectedException(Throwable ex) {
         threadFailed = true;
         ex.printStackTrace();
         fail("Unexpected exception: " + ex);
     }

     /**
      * Wait out termination of a thread pool or fail doing so
      */
     public void joinPool(ExecutorService exec) {
         try {
             exec.shutdown();
             assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
         } catch(SecurityException ok) {
             // Allowed in case test doesn't have privs
         } catch(InterruptedException ie) {
             fail("Unexpected exception");
         }
     }


     /**
      * fail with message "should throw exception"
      */
     public void shouldThrow() {
         fail("Should throw exception");
     }

     /**
      * fail with message "Unexpected exception"
      */
     public void unexpectedException() {
         fail("Unexpected exception");
     }


     /**
      * The number of elements to place in collections, arrays, etc.
      */
     static final int SIZE = 20;

     // Some convenient Integer constants

     static final Integer zero = new Integer(0);
     static final Integer one = new Integer(1);
     static final Integer two = new Integer(2);
     static final Integer three  = new Integer(3);
     static final Integer four  = new Integer(4);
     static final Integer five  = new Integer(5);
     static final Integer six = new Integer(6);
     static final Integer seven = new Integer(7);
     static final Integer eight = new Integer(8);
     static final Integer nine = new Integer(9);
     static final Integer m1  = new Integer(-1);
     static final Integer m2  = new Integer(-2);
     static final Integer m3  = new Integer(-3);
     static final Integer m4 = new Integer(-4);
     static final Integer m5 = new Integer(-5);
     static final Integer m6 = new Integer(-6);
     static final Integer m10 = new Integer(-10);


     /**
      * A security policy where new permissions can be dynamically added
      * or all cleared.
      */
     static class AdjustablePolicy extends java.security.Policy {
         Permissions perms = new Permissions();
         AdjustablePolicy() { }
         void addPermission(Permission perm) { perms.add(perm); }
         void clearPermissions() { perms = new Permissions(); }
 	public PermissionCollection getPermissions(CodeSource cs) {
 	    return perms;
 	}
 	public PermissionCollection getPermissions(ProtectionDomain pd) {
 	    return perms;
 	}
 	public boolean implies(ProtectionDomain pd, Permission p) {
 	    return perms.implies(p);
 	}
 	public void refresh() {}
     }


     // Some convenient Runnable classes

     static class NoOpRunnable implements Runnable {
         public void run() {}
     }

     static class NoOpCallable implements Callable {
         public Object call() { return Boolean.TRUE; }
     }

     static final String TEST_STRING = "a test string";

     static class StringTask implements Callable<String> {
         public String call() { return TEST_STRING; }
     }

     static class NPETask implements Callable<String> {
         public String call() { throw new NullPointerException(); }
     }

     static class CallableOne implements Callable<Integer> {
         public Integer call() { return one; }
     }

     class ShortRunnable implements Runnable {
         public void run() {
             try {
                 Thread.sleep(SHORT_DELAY_MS);
             }
             catch(Exception e) {
                 threadUnexpectedException(e);
             }
         }
     }

     class ShortInterruptedRunnable implements Runnable {
         public void run() {
             try {
                 Thread.sleep(SHORT_DELAY_MS);
                 threadShouldThrow();
             }
             catch(InterruptedException success) {
             }
         }
     }

     class SmallRunnable implements Runnable {
         public void run() {
             try {
                 Thread.sleep(SMALL_DELAY_MS);
             }
             catch(Exception e) {
                 threadUnexpectedException(e);
             }
         }
     }

     class SmallPossiblyInterruptedRunnable implements Runnable {
         public void run() {
             try {
                 Thread.sleep(SMALL_DELAY_MS);
             }
             catch(Exception e) {
             }
         }
     }

     class SmallCallable implements Callable {
         public Object call() {
             try {
                 Thread.sleep(SMALL_DELAY_MS);
             }
             catch(Exception e) {
                 threadUnexpectedException(e);
             }
             return Boolean.TRUE;
         }
     }

     class SmallInterruptedRunnable implements Runnable {
         public void run() {
             try {
                 Thread.sleep(SMALL_DELAY_MS);
                 threadShouldThrow();
             }
             catch(InterruptedException success) {
             }
         }
     }


     class MediumRunnable implements Runnable {
         public void run() {
             try {
                 Thread.sleep(MEDIUM_DELAY_MS);
             }
             catch(Exception e) {
                 threadUnexpectedException(e);
             }
         }
     }

     class MediumInterruptedRunnable implements Runnable {
         public void run() {
             try {
                 Thread.sleep(MEDIUM_DELAY_MS);
                 threadShouldThrow();
             }
             catch(InterruptedException success) {
             }
         }
     }

     class MediumPossiblyInterruptedRunnable implements Runnable {
         public void run() {
             try {
                 Thread.sleep(MEDIUM_DELAY_MS);
             }
             catch(InterruptedException success) {
             }
         }
     }

     class LongPossiblyInterruptedRunnable implements Runnable {
         public void run() {
             try {
                 Thread.sleep(LONG_DELAY_MS);
             }
             catch(InterruptedException success) {
             }
         }
     }

     /**
      * For use as ThreadFactory in constructors
      */
     static class SimpleThreadFactory implements ThreadFactory{
         public Thread newThread(Runnable r){
             return new Thread(r);
         }
     }

     static class TrackedShortRunnable implements Runnable {
         volatile boolean done = false;
         public void run() {
             try {
                 Thread.sleep(SMALL_DELAY_MS);
                 done = true;
             } catch(Exception e){
             }
         }
     }

     static class TrackedMediumRunnable implements Runnable {
         volatile boolean done = false;
         public void run() {
             try {
                 Thread.sleep(MEDIUM_DELAY_MS);
                 done = true;
             } catch(Exception e){
             }
         }
     }

     static class TrackedLongRunnable implements Runnable {
         volatile boolean done = false;
         public void run() {
             try {
                 Thread.sleep(LONG_DELAY_MS);
                 done = true;
             } catch(Exception e){
             }
         }
     }

     static class TrackedNoOpRunnable implements Runnable {
         volatile boolean done = false;
         public void run() {
             done = true;
         }
     }

     static class TrackedCallable implements Callable {
         volatile boolean done = false;
         public Object call() {
             try {
                 Thread.sleep(SMALL_DELAY_MS);
                 done = true;
             } catch(Exception e){
             }
             return Boolean.TRUE;
         }
     }


     /**
      * For use as RejectedExecutionHandler in constructors
      */
     static class NoOpREHandler implements RejectedExecutionHandler{
         public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
     }


 }
	/*
	* Written by Doug Lea with assistance from members of JCP JSR-166
	* Expert Group and released to the public domain, as explained at
	* http://creativecommons.org/licenses/publicdomain
	* Other contributors include Andrew Wright, Jeffrey Hayes,
	* Pat Fisher, Mike Judd.
	*/

	import junit.framework.*;
	import java.util.*;
	import java.util.concurrent.*;
	import java.io.*;
	import java.security.*;

	/**
	* Base class for JSR166 Junit TCK tests. Defines some constants,
	* utility methods and classes, as well as a simple framework for
	* helping to make sure that assertions failing in generated threads
	* cause the associated test that generated them to itself fail (which
	* JUnit does not otherwise arrange). The rules for creating such
	* tests are:
	*
	* <ol>
	*
	* <li> All assertions in code running in generated threads must use
	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
	* particularly recommended) for other code to use these forms too.
	* Only the most typically used JUnit assertion methods are defined
	* this way, but enough to live with.</li>
	*
	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
	* them. These methods are used to clear and check for thread
	* assertion failures.</li>
	*
	* <li>All delays and timeouts must use one of the constants <tt>
	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
	* discriminable from zero time, and always allows enough time for the
	* small amounts of computation (creating a thread, calling a few
	* methods, etc) needed to reach a timeout point. Similarly, a SMALL
	* is always discriminable as larger than SHORT and smaller than
	* MEDIUM. And so on. These constants are set to conservative values,
	* but even so, if there is ever any doubt, they can all be increased
	* in one spot to rerun tests on slower platforms.</li>
	*
	* <li> All threads generated must be joined inside each test case
	* method (or <tt>fail</tt> to do so) before returning from the
	* method. The <tt> joinPool</tt> method can be used to do this when
	* using Executors.</li>
	*
	* </ol>
	*
	* <p> <b>Other notes</b>
	* <ul>
	*
	* <li> Usually, there is one testcase method per JSR166 method
	* covering "normal" operation, and then as many exception-testing
	* methods as there are exceptions the method can throw. Sometimes
	* there are multiple tests per JSR166 method when the different
	* "normal" behaviors differ significantly. And sometimes testcases
	* cover multiple methods when they cannot be tested in
	* isolation.</li>
	*
	* <li> The documentation style for testcases is to provide as javadoc
	* a simple sentence or two describing the property that the testcase
	* method purports to test. The javadocs do not say anything about how
	* the property is tested. To find out, read the code.</li>
	*
	* <li> These tests are "conformance tests", and do not attempt to
	* test throughput, latency, scalability or other performance factors
	* (see the separate "jtreg" tests for a set intended to check these
	* for the most central aspects of functionality.) So, most tests use
	* the smallest sensible numbers of threads, collection sizes, etc
	* needed to check basic conformance.</li>
	*
	* <li>The test classes currently do not declare inclusion in
	* any particular package to simplify things for people integrating
	* them in TCK test suites.</li>
	*
	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
	* runs all JSR166 unit tests.</li>
	*
	* </ul>
	*/
	public class JSR166TestCase extends TestCase {
	/**
	* Runs all JSR166 unit tests using junit.textui.TestRunner
	*/
	public static void main (String[] args) {
	int iters = 1;
	if (args.length > 0)
	iters = Integer.parseInt(args[0]);
	Test s = suite();
	for (int i = 0; i < iters; ++i) {
	junit.textui.TestRunner.run (s);
	System.gc();
	System.runFinalization();
	}
	System.exit(0);
	}

	/**
	* Collects all JSR166 unit tests as one suite
	*/
	public static Test suite ( ) {
	TestSuite suite = new TestSuite("JSR166 Unit Tests");

	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
	suite.addTest(new TestSuite(AbstractQueueTest.class));
	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
	suite.addTest(new TestSuite(AtomicBooleanTest.class));
	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
	suite.addTest(new TestSuite(AtomicIntegerTest.class));
	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
	suite.addTest(new TestSuite(AtomicLongTest.class));
	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
	suite.addTest(new TestSuite(AtomicReferenceTest.class));
	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
	suite.addTest(new TestSuite(CountDownLatchTest.class));
	suite.addTest(new TestSuite(CyclicBarrierTest.class));
	suite.addTest(new TestSuite(DelayQueueTest.class));
	suite.addTest(new TestSuite(ExchangerTest.class));
	suite.addTest(new TestSuite(ExecutorsTest.class));
	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
	suite.addTest(new TestSuite(FutureTaskTest.class));
	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
	suite.addTest(new TestSuite(LinkedListTest.class));
	suite.addTest(new TestSuite(LockSupportTest.class));
	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
	suite.addTest(new TestSuite(PriorityQueueTest.class));
	suite.addTest(new TestSuite(ReentrantLockTest.class));
	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
	suite.addTest(new TestSuite(SemaphoreTest.class));
	suite.addTest(new TestSuite(SynchronousQueueTest.class));
	suite.addTest(new TestSuite(SystemTest.class));
	suite.addTest(new TestSuite(ThreadLocalTest.class));
	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
	suite.addTest(new TestSuite(ThreadTest.class));
	suite.addTest(new TestSuite(TimeUnitTest.class));

	return suite;
	}


	public static long SHORT_DELAY_MS;
	public static long SMALL_DELAY_MS;
	public static long MEDIUM_DELAY_MS;
	public static long LONG_DELAY_MS;


	/**
	* Returns the shortest timed delay. This could
	* be reimplemented to use for example a Property.
	*/
	protected long getShortDelay() {
	return 50;
	}


	/**
	* Sets delays as multiples of SHORT_DELAY.
	*/
	protected void setDelays() {
	SHORT_DELAY_MS = getShortDelay();
	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
	MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
	}

	/**
	* Flag set true if any threadAssert methods fail
	*/
	volatile boolean threadFailed;

	/**
	* Initializes test to indicate that no thread assertions have failed
	*/
	public void setUp() {
	setDelays();
	threadFailed = false;
	}

	/**
	* Triggers test case failure if any thread assertions have failed
	*/
	public void tearDown() {
	assertFalse(threadFailed);
	}

	/**
	* Fail, also setting status to indicate current testcase should fail
	*/
	public void threadFail(String reason) {
	threadFailed = true;
	fail(reason);
	}

	/**
	* If expression not true, set status to indicate current testcase
	* should fail
	*/
	public void threadAssertTrue(boolean b) {
	if (!b) {
	threadFailed = true;
	assertTrue(b);
	}
	}

	/**
	* If expression not false, set status to indicate current testcase
	* should fail
	*/
	public void threadAssertFalse(boolean b) {
	if (b) {
	threadFailed = true;
	assertFalse(b);
	}
	}

	/**
	* If argument not null, set status to indicate current testcase
	* should fail
	*/
	public void threadAssertNull(Object x) {
	if (x != null) {
	threadFailed = true;
	assertNull(x);
	}
	}

	/**
	* If arguments not equal, set status to indicate current testcase
	* should fail
	*/
	public void threadAssertEquals(long x, long y) {
	if (x != y) {
	threadFailed = true;
	assertEquals(x, y);
	}
	}

	/**
	* If arguments not equal, set status to indicate current testcase
	* should fail
	*/
	public void threadAssertEquals(Object x, Object y) {
	if (x != y && (x == null \|\| !x.equals(y))) {
	threadFailed = true;
	assertEquals(x, y);
	}
	}

	/**
	* threadFail with message "should throw exception"
	*/
	public void threadShouldThrow() {
	try {
	threadFailed = true;
	fail("should throw exception");
	} catch (AssertionFailedError e) {
	e.printStackTrace();
	throw e;
	}
	}

	/**
	* threadFail with message "Unexpected exception"
	*/
	public void threadUnexpectedException() {
	threadFailed = true;
	fail("Unexpected exception");
	}

	/**
	* threadFail with message "Unexpected exception", with argument
	*/
	public void threadUnexpectedException(Throwable ex) {
	threadFailed = true;
	ex.printStackTrace();
	fail("Unexpected exception: " + ex);
	}

	/**
	* Wait out termination of a thread pool or fail doing so
	*/
	public void joinPool(ExecutorService exec) {
	try {
	exec.shutdown();
	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
	} catch(SecurityException ok) {
	// Allowed in case test doesn't have privs
	} catch(InterruptedException ie) {
	fail("Unexpected exception");
	}
	}


	/**
	* fail with message "should throw exception"
	*/
	public void shouldThrow() {
	fail("Should throw exception");
	}

	/**
	* fail with message "Unexpected exception"
	*/
	public void unexpectedException() {
	fail("Unexpected exception");
	}


	/**
	* The number of elements to place in collections, arrays, etc.
	*/
	static final int SIZE = 20;

	// Some convenient Integer constants

	static final Integer zero = new Integer(0);
	static final Integer one = new Integer(1);
	static final Integer two = new Integer(2);
	static final Integer three = new Integer(3);
	static final Integer four = new Integer(4);
	static final Integer five = new Integer(5);
	static final Integer six = new Integer(6);
	static final Integer seven = new Integer(7);
	static final Integer eight = new Integer(8);
	static final Integer nine = new Integer(9);
	static final Integer m1 = new Integer(-1);
	static final Integer m2 = new Integer(-2);
	static final Integer m3 = new Integer(-3);
	static final Integer m4 = new Integer(-4);
	static final Integer m5 = new Integer(-5);
	static final Integer m6 = new Integer(-6);
	static final Integer m10 = new Integer(-10);


	/**
	* A security policy where new permissions can be dynamically added
	* or all cleared.
	*/
	static class AdjustablePolicy extends java.security.Policy {
	Permissions perms = new Permissions();
	AdjustablePolicy() { }
	void addPermission(Permission perm) { perms.add(perm); }
	void clearPermissions() { perms = new Permissions(); }
	public PermissionCollection getPermissions(CodeSource cs) {
	return perms;
	}
	public PermissionCollection getPermissions(ProtectionDomain pd) {
	return perms;
	}
	public boolean implies(ProtectionDomain pd, Permission p) {
	return perms.implies(p);
	}
	public void refresh() {}
	}


	// Some convenient Runnable classes

	static class NoOpRunnable implements Runnable {
	public void run() {}
	}

	static class NoOpCallable implements Callable {
	public Object call() { return Boolean.TRUE; }
	}

	static final String TEST_STRING = "a test string";

	static class StringTask implements Callable<String> {
	public String call() { return TEST_STRING; }
	}

	static class NPETask implements Callable<String> {
	public String call() { throw new NullPointerException(); }
	}

	static class CallableOne implements Callable<Integer> {
	public Integer call() { return one; }
	}

	class ShortRunnable implements Runnable {
	public void run() {
	try {
	Thread.sleep(SHORT_DELAY_MS);
	}
	catch(Exception e) {
	threadUnexpectedException(e);
	}
	}
	}

	class ShortInterruptedRunnable implements Runnable {
	public void run() {
	try {
	Thread.sleep(SHORT_DELAY_MS);
	threadShouldThrow();
	}
	catch(InterruptedException success) {
	}
	}
	}

	class SmallRunnable implements Runnable {
	public void run() {
	try {
	Thread.sleep(SMALL_DELAY_MS);
	}
	catch(Exception e) {
	threadUnexpectedException(e);
	}
	}
	}

	class SmallPossiblyInterruptedRunnable implements Runnable {
	public void run() {
	try {
	Thread.sleep(SMALL_DELAY_MS);
	}
	catch(Exception e) {
	}
	}
	}

	class SmallCallable implements Callable {
	public Object call() {
	try {
	Thread.sleep(SMALL_DELAY_MS);
	}
	catch(Exception e) {
	threadUnexpectedException(e);
	}
	return Boolean.TRUE;
	}
	}

	class SmallInterruptedRunnable implements Runnable {
	public void run() {
	try {
	Thread.sleep(SMALL_DELAY_MS);
	threadShouldThrow();
	}
	catch(InterruptedException success) {
	}
	}
	}


	class MediumRunnable implements Runnable {
	public void run() {
	try {
	Thread.sleep(MEDIUM_DELAY_MS);
	}
	catch(Exception e) {
	threadUnexpectedException(e);
	}
	}
	}

	class MediumInterruptedRunnable implements Runnable {
	public void run() {
	try {
	Thread.sleep(MEDIUM_DELAY_MS);
	threadShouldThrow();
	}
	catch(InterruptedException success) {
	}
	}
	}

	class MediumPossiblyInterruptedRunnable implements Runnable {
	public void run() {
	try {
	Thread.sleep(MEDIUM_DELAY_MS);
	}
	catch(InterruptedException success) {
	}
	}
	}

	class LongPossiblyInterruptedRunnable implements Runnable {
	public void run() {
	try {
	Thread.sleep(LONG_DELAY_MS);
	}
	catch(InterruptedException success) {
	}
	}
	}

	/**
	* For use as ThreadFactory in constructors
	*/
	static class SimpleThreadFactory implements ThreadFactory{
	public Thread newThread(Runnable r){
	return new Thread(r);
	}
	}

	static class TrackedShortRunnable implements Runnable {
	volatile boolean done = false;
	public void run() {
	try {
	Thread.sleep(SMALL_DELAY_MS);
	done = true;
	} catch(Exception e){
	}
	}
	}

	static class TrackedMediumRunnable implements Runnable {
	volatile boolean done = false;
	public void run() {
	try {
	Thread.sleep(MEDIUM_DELAY_MS);
	done = true;
	} catch(Exception e){
	}
	}
	}

	static class TrackedLongRunnable implements Runnable {
	volatile boolean done = false;
	public void run() {
	try {
	Thread.sleep(LONG_DELAY_MS);
	done = true;
	} catch(Exception e){
	}
	}
	}

	static class TrackedNoOpRunnable implements Runnable {
	volatile boolean done = false;
	public void run() {
	done = true;
	}
	}

	static class TrackedCallable implements Callable {
	volatile boolean done = false;
	public Object call() {
	try {
	Thread.sleep(SMALL_DELAY_MS);
	done = true;
	} catch(Exception e){
	}
	return Boolean.TRUE;
	}
	}


	/**
	* For use as RejectedExecutionHandler in constructors
	*/
	static class NoOpREHandler implements RejectedExecutionHandler{
	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
	}


	}