public async void Get_Loan_Wrong_Id()
        {
            using (var context = GetContextWithData())
                using (var controller = new LoansController(context))
                {
                    var loanId = 99999;
                    var result = await controller.GetLoan(loanId);

                    Assert.IsType <NotFoundResult>(result);
                }
        }
        public async void Get_Loan()
        {
            using (var context = GetContextWithData())
                using (var controller = new LoansController(context))
                {
                    var loanId = context.Loans.FirstOrDefault().LoanID;
                    var result = await controller.GetLoan(loanId);

                    Assert.IsType <OkObjectResult>(result);
                }
        }