public When_Employer_Service_Is_Called_To_Handle_Invalid_Aupa_Null_Contact_Updated_Event() { _employerRepository = Substitute.For <IRepository <Domain.Models.Employer> >(); var opportunityRepository = Substitute.For <IOpportunityRepository>(); _employerRepository.GetSingleOrDefaultAsync(Arg.Any <Expression <Func <Domain.Models.Employer, bool> > >()) .Returns(new Domain.Models.Employer()); var employerService = new EmployerService(_employerRepository, opportunityRepository, Substitute.For <IMapper>(), new CrmEmployerEventDataValidator(), Substitute.For <IMessageQueueService>()); var employerEventBase = new CrmEmployerEventBaseBuilder().Build(); var data = JsonConvert.SerializeObject(employerEventBase, new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore, MissingMemberHandling = MissingMemberHandling.Ignore }); employerService.HandleContactUpdatedAsync(data).GetAwaiter().GetResult(); }