public void GetByExhibit() { // Prepare test data Event firstEvent = _events.First(); Exhibit ex = DbFactory.CreateExhibit((item) => item.Events = new[] { firstEvent }); // Arrange EventsService service = Scope.Resolve <EventsService>(); // Act IEnumerable <Event> result = service.GetByExhibit(ex.ExhibitID); // Assert Assert.IsNotNull(result.Any()); }