abstract class AbstractEventBusTest<H> extends TestCase {
  static final Object EVENT = new Object();

  abstract H createSubscriber();

  private @Nullable H subscriber;

  H getSubscriber() {
    return subscriber;
  }

  @Override
  protected void setUp() throws Exception {
    subscriber = createSubscriber();
    EventBus bus = new EventBus();
    bus.register(subscriber);
    bus.post(EVENT);
  }

  @Override

  }

  public void testOverriddenInSubclassNowhereAnnotated() {
    assertThat(getSubscriber().overriddenInSubclassNowhereAnnotatedEvents).isEmpty();
  }

  @Override
  SubClass createSubscriber() {
    return new SubClass();
  }

    assertThat(getSubscriber().nonSubscriberEvents).isEmpty();
  }

  public void testSubscriber() {
    assertThat(getSubscriber().subscriberEvents).contains(EVENT);
  }

  @Override
  Subscriber createSubscriber() {
    return new Subscriber();
  }

  }

  public void testOverriddenAndAnnotatedInSubclass() {
    assertThat(getSubscriber().overriddenAndAnnotatedInSubclassEvents).contains(EVENT);
  }

  @Override
  SubClass createSubscriber() {
    return new SubClass();
  }

  }

  public void testOverriddenNotAnnotatedInSubclass() {
    assertThat(getSubscriber().overriddenInSubclassEvents).contains(EVENT);
  }

  @Override
  SubClass createSubscriber() {
    return new SubClass();
  }

  }

  public void testOverriddenAndAnnotatedInSubclass() {
    assertThat(getSubscriber().overriddenAndAnnotatedInSubclassEvents).contains(EVENT);
  }

  @Override
  SubClass createSubscriber() {
    return new SubClass();
  }

    assertThat(getSubscriber().differentlyOverriddenAnnotatedInSubclassBadEvents).isEmpty();
  }

  @Override
  SubClass createSubscriber() {
    return new SubClass();
  }

  }

  public void testNowhereAnnotated() {
    assertThat(getSubscriber().nowhereAnnotatedEvents).isEmpty();
  }

  @Override
  SubscriberClass createSubscriber() {
    return new SubscriberClass();
  }

    assertThat(getSubscriber().differentlyOverriddenAnnotatedInSubclassBadEvents).isEmpty();
  }

  @Override
  SubClass createSubscriber() {
    return new SubClass();
  }