public When_EmployerService_Is_Called_To_Get_Opportunity_Employer_Owner_Null()
{
var employerRepository = Substitute.For <IRepository <Domain.Models.Employer> >();
_opportunityRepository = Substitute.For <IOpportunityRepository>();
_opportunityRepository.GetFirstOrDefaultAsync(Arg.Any <Expression <Func <Domain.Models.Opportunity, bool> > >())
.Returns((Domain.Models.Opportunity)null);
var employerService = new EmployerService(employerRepository, _opportunityRepository, Substitute.For <IMapper>(), Substitute.For <IValidator <CrmEmployerEventBase> >(),
Substitute.For <IMessageQueueService>());
_result = employerService.GetEmployerOpportunityOwnerAsync(new Guid("11111111-1111-1111-1111-111111111111")).GetAwaiter().GetResult();
}