public void ProcessEvent() { var movement = "movementId"; var location = "location"; var item = new StockItem("item", "1"); var fromLocation = "fromLocationId"; var eventHandlerId = $"{typeof(Movement).Name}\\{movement}"; var storedEventStreamId = eventHandlerId; var @event = EventFactory.Default.CreateEvent <Location, MovedIn>(location, 3, "commandId", "correlationId", new MovedIn(movement, location, item, fromLocation)); var eventEngine = DomainFactory.CreateEventHandler(this.boundedContextModel, this.eventStore.Object); var commands = eventEngine.Handle(@event, eventHandlerId, typeof(Movement)); Assert.IsTrue(commands.Count() == 0); this.eventStore.Verify(x => x.Store(storedEventStreamId, It.Is <IEnumerable <IEvent> >(x => x.First().EventBody as MovedIn == @event.EventBody))); }