public When_OpportunityService_Is_Called_To_Delete_Referral()
{
var config = new MapperConfiguration(c => c.AddMaps(typeof(OpportunityMapper).Assembly));
var mapper = new Mapper(config);
var opportunityRepository = Substitute.For <IOpportunityRepository>();
var opportunityItemRepository = Substitute.For <IRepository <OpportunityItem> >();
var provisionGapRepository = Substitute.For <IRepository <ProvisionGap> >();
_referralRepository = Substitute.For <IRepository <Domain.Models.Referral> >();
_referralRepository.GetFirstOrDefaultAsync(Arg.Any <Expression <Func <Domain.Models.Referral, bool> > >())
.Returns(new Domain.Models.Referral
{
Id = ReferralId,
OpportunityItemId = OpportunityItemId
});
var googleMapApiClient = Substitute.For <IGoogleMapApiClient>();
var opportunityPipelineReportWriter = Substitute.For <IFileWriter <OpportunityReportDto> >();
var dateTimeProvider = Substitute.For <IDateTimeProvider>();
var opportunityService = new OpportunityService(mapper, opportunityRepository, opportunityItemRepository,
provisionGapRepository, _referralRepository, googleMapApiClient,
opportunityPipelineReportWriter, dateTimeProvider);
opportunityService.DeleteReferralAsync(ReferralId).GetAwaiter().GetResult();
}