@Test
  public void testLoadEventsWithDecorators() {
    UUID identifier = UUID.randomUUID();
    SpyEventPreprocessor decorator1 = new SpyEventPreprocessor();
    SpyEventPreprocessor decorator2 = new SpyEventPreprocessor();
    testSubject.setEventStreamDecorators(Arrays.asList(decorator1, decorator2));
    when(mockEventStore.readEvents("test", identifier))
        .thenReturn(
            new SimpleDomainEventStream(
                new GenericDomainEventMessage<String>(
                    identifier, (long) 1, "Mock contents", MetaData.emptyInstance()),
                new GenericDomainEventMessage<String>(
                    identifier, (long) 2, "Mock contents", MetaData.emptyInstance()),
                new GenericDomainEventMessage<String>(
                    identifier, (long) 3, "Mock contents", MetaData.emptyInstance())));
    TestAggregate aggregate = testSubject.load(identifier);
    // loading them in...
    InOrder inOrder = Mockito.inOrder(decorator1.lastSpy, decorator2.lastSpy);
    inOrder.verify(decorator2.lastSpy).next();
    inOrder.verify(decorator1.lastSpy).next();

    inOrder.verify(decorator2.lastSpy).next();
    inOrder.verify(decorator1.lastSpy).next();

    inOrder.verify(decorator2.lastSpy).next();
    inOrder.verify(decorator1.lastSpy).next();
    aggregate.apply(new StubDomainEvent());
    aggregate.apply(new StubDomainEvent());
  }
  @Test
  public void testSaveEventsWithDecorators() {
    SpyEventPreprocessor decorator1 = new SpyEventPreprocessor();
    SpyEventPreprocessor decorator2 = new SpyEventPreprocessor();
    testSubject.setEventStreamDecorators(Arrays.asList(decorator1, decorator2));
    testSubject.setEventStore(
        new EventStore() {
          @Override
          public void appendEvents(String type, DomainEventStream events) {
            while (events.hasNext()) {
              events.next();
            }
          }

          @Override
          public DomainEventStream readEvents(String type, Object identifier) {
            return mockEventStore.readEvents(type, identifier);
          }
        });
    UUID identifier = UUID.randomUUID();
    when(mockEventStore.readEvents("test", identifier))
        .thenReturn(
            new SimpleDomainEventStream(
                new GenericDomainEventMessage<String>(
                    identifier, (long) 3, "Mock contents", MetaData.emptyInstance())));
    TestAggregate aggregate = testSubject.load(identifier);
    aggregate.apply(new StubDomainEvent());
    aggregate.apply(new StubDomainEvent());

    CurrentUnitOfWork.commit();

    InOrder inOrder = Mockito.inOrder(decorator1.lastSpy, decorator2.lastSpy);
    inOrder.verify(decorator1.lastSpy).next();
    inOrder.verify(decorator2.lastSpy).next();

    inOrder.verify(decorator1.lastSpy).next();
    inOrder.verify(decorator2.lastSpy).next();
  }