// not all.  See the test cases for examples on how this can happen.
        try {
          ((Thread) currentRunner).interrupt();
        } finally {
          Runnable prev = getAndSet(DONE);
          if (prev == PARKED) {
            LockSupport.unpark((Thread) currentRunner);
          }
        }
      }
    }
  }

  /**

  public void testAddAndGet() {
    Count holder = new Count(20);
    assertEquals(21, holder.addAndGet(1));
  }

  public void testGetAndSet() {
    Count holder = new Count(10);
    assertEquals(10, holder.getAndSet(20));
    assertEquals(20, holder.get());
  }

  public void testSet() {
    Count holder = new Count(10);
    holder.set(20);
    assertEquals(20, holder.get());
  }

        requireNonNull(message, "message");
        entries.get().add(new Entry(level, message, error));
    }

    @Override
    public List<Entry> drain() {
        return entries.getAndSet(new CopyOnWriteArrayList<>());
    }

    AtomicBoolean setUpRan = new AtomicBoolean();
    Runnable setUp =
        () ->
            assertFalse("previous tearDown should have run before setUp", setUpRan.getAndSet(true));
    Runnable tearDown = () -> assertTrue("setUp should have run", setUpRan.getAndSet(false));
    return MapTestSuiteBuilder.using(new CheckSetUpHashMapGenerator(setUpRan))
        .named("setUpTearDown")
        .withFeatures(

  public void testAddAndGet() {
    Count holder = new Count(20);
    assertEquals(21, holder.addAndGet(1));
  }

  public void testGetAndSet() {
    Count holder = new Count(10);
    assertEquals(10, holder.getAndSet(20));
    assertEquals(20, holder.get());
  }

  public void testSet() {
    Count holder = new Count(10);
    holder.set(20);
    assertEquals(20, holder.get());
  }

    AtomicBoolean setUpRan = new AtomicBoolean();
    Runnable setUp =
        () ->
            assertFalse("previous tearDown should have run before setUp", setUpRan.getAndSet(true));
    Runnable tearDown = () -> assertTrue("setUp should have run", setUpRan.getAndSet(false));
    return MapTestSuiteBuilder.using(new CheckSetUpHashMapGenerator(setUpRan))
        .named("setUpTearDown")
        .withFeatures(

                if (waitForState(transport) == 2) {
                    // already connected
                    return null;
                }
                final int before = this.connectionState.getAndSet(1);
                if (before == 1) {
                    // concurrent connection attempt
                    if (waitForState(transport) == 2) {
                        // finished connecting

   *
   * <p>Triggers test case failure if interrupted status is set in the main thread.
   */
  @Override
  protected void tearDown() throws Exception {
    Throwable t = threadFailure.getAndSet(null);
    if (t != null) {
      if (t instanceof Error) {
        throw (Error) t;
      } else if (t instanceof RuntimeException) {
        throw (RuntimeException) t;
      } else if (t instanceof Exception) {

   *
   * <p>Triggers test case failure if interrupted status is set in the main thread.
   */
  @Override
  protected void tearDown() throws Exception {
    Throwable t = threadFailure.getAndSet(null);
    if (t != null) {
      if (t instanceof Error) {
        throw (Error) t;
      } else if (t instanceof RuntimeException) {
        throw (RuntimeException) t;
      } else if (t instanceof Exception) {

        log.info("Circuit breaker {} reset", name);
    }

    /**
     * Force the circuit to open
     */
    public void tripBreaker() {
        State previous = state.getAndSet(State.OPEN);
        if (previous != State.OPEN) {
            stateChangeTime.set(System.currentTimeMillis());
            lastFailureTime.set(System.currentTimeMillis());