public async void ByName_Not_Exists()
{
var mock = new ServiceMockFacade<ITenantRepository>();
mock.RepositoryMock.Setup(x => x.ByName(It.IsAny<string>())).Returns(Task.FromResult<Tenant>(null));
var service = new TenantService(mock.LoggerMock.Object,
mock.RepositoryMock.Object,
mock.ModelValidatorMockFactory.TenantModelValidatorMock.Object,
mock.BOLMapperMockFactory.BOLTenantMapperMock,
mock.DALMapperMockFactory.DALTenantMapperMock);
ApiTenantResponseModel response = await service.ByName(default(string));
response.Should().BeNull();
mock.RepositoryMock.Verify(x => x.ByName(It.IsAny<string>()));
}