*/
  protected ScheduledExecutorService executor() {
    @WeakOuter
    final class ThreadFactoryImpl implements ThreadFactory {
      @Override
      public Thread newThread(Runnable runnable) {
        return MoreExecutors.newThread(serviceName(), runnable);
      }
    }
    ScheduledExecutorService executor =
        Executors.newSingleThreadScheduledExecutor(new ThreadFactoryImpl());

 * @author George van den Driessche
 */
@GwtCompatible
@NullMarked
public class AbstractTester<G> extends TestCase {
  private G subjectGenerator;
  private String suiteName;
  private @Nullable Runnable setUp;
  private @Nullable Runnable tearDown;

  // public so that it can be referenced in generated GWT tests.
  @Override
  public void setUp() throws Exception {
    if (setUp != null) {
      setUp.run();
    }
  }

   */
  protected ScheduledExecutorService executor() {
    @WeakOuter
    final class ThreadFactoryImpl implements ThreadFactory {
      @Override
      public Thread newThread(Runnable runnable) {
        return MoreExecutors.newThread(serviceName(), runnable);
      }
    }
    ScheduledExecutorService executor =
        Executors.newSingleThreadScheduledExecutor(new ThreadFactoryImpl());

    }
  }

  // This exclusion doesn't exclude the TOMBSTONE objects we set. So 'done' NEW futures will look
  // larger than they are.
  @SuppressWarnings("FutureReturnValueIgnored")
  @Footprint(exclude = {Runnable.class, Executor.class, Thread.class, Exception.class})
  public Object measureSize() {
    for (Thread thread : blockedThreads) {
      thread.interrupt();
    }
    blockedThreads.clear();

    return new Callable<T>() {
      @Override
      public T call() throws Exception {
        throw exception;
      }
    };
  }

  private static Runnable runnableThrowing(RuntimeException e) {
    return new Runnable() {
      @Override
      public void run() {
        throw e;
      }
    };
  }

  @SuppressWarnings("serial")

  }

  @Override
  public void shutdown() {
    delegate().shutdown();
  }

  @Override
  @CanIgnoreReturnValue
  public List<Runnable> shutdownNow() {
    return delegate().shutdownNow();
  }

  @Override
  public void execute(Runnable command) {
    delegate().execute(command);
  }

  @Override
  public <T extends @Nullable Object> Future<T> submit(Callable<T> task) {

  }

  @Override
  public final ScheduledFuture<?> scheduleAtFixedRate(
      Runnable command, long initialDelay, long period, TimeUnit unit) {
    return delegate.scheduleAtFixedRate(wrapTask(command), initialDelay, period, unit);
  }

  @Override
  public final ScheduledFuture<?> scheduleWithFixedDelay(
      Runnable command, long initialDelay, long delay, TimeUnit unit) {

 */
@NullUnmarked
final class InterruptionUtil {
  private static final Logger logger = Logger.getLogger(InterruptionUtil.class.getName());

  /** Runnable which will interrupt the target thread repeatedly when run. */
  private static final class Interruptenator implements Runnable {
    private final long everyMillis;
    private final Thread interruptee;
    private volatile boolean shouldStop = false;

    inBetween.assertRun();
    after.assertRun();
  }

  public void testMisbehavingListenerAlreadyDone() {
    class BadRunnableException extends RuntimeException {}

    Runnable bad =
        new Runnable() {
          @Override
          public void run() {
            throw new BadRunnableException();
          }
        };

    future.set(1);

            throw e;
        }
    }

    /**
     * Execute a runnable through the circuit breaker
     *
     * @param runnable the runnable to execute
     * @throws Exception if execution fails or circuit is open
     */
    public void run(Runnable runnable) throws Exception {
        call(() -> {
            runnable.run();
            return null;
        });
    }

    /**