public void TestLoanApprovedForHighCreditScore()
{
var application = new LoanApplication()
{
FirstName = "John",
LastName = "Doe",
AnnualIncome = 50_000,
CreditScore = 77,
LoanAmount = 250_000,
Term = LoanTerm.YEARS_30
};
LoanProcessingService service = new LoanProcessingService(Rates,
new CreditScoreLoanApprovalRule(),
new LoanSizeLoanApprovalRule()
);
// Act
var result = service.ProcessLoan(application);
Assert.IsTrue(result.Approved);
}
public void TestLoanHasCorrectInterestRate()
{
// Arrange
var application = new LoanApplication()
{
FirstName = "John",
LastName = "Doe",
AnnualIncome = 50_000,
CreditScore = 73,
LoanAmount = 250_000,
Term = LoanTerm.YEARS_30
};
LoanProcessingService service = new LoanProcessingService(Rates,
new CreditScoreLoanApprovalRule(),
new LoanSizeLoanApprovalRule()
);
// Act
var result = service.ProcessLoan(application);
// Assert
Assert.IsNotNull(result.InterestRate, "This loan should be approved and have an interest rate");
Assert.AreEqual(0.0625, result.InterestRate.Value);
}
public void TestLoanHasCorrectPaymentCalculated()
{
// Arrange
var application = new LoanApplication()
{
FirstName = "John",
LastName = "Doe",
AnnualIncome = 50_000,
CreditScore = 73,
LoanAmount = 250_000,
Term = LoanTerm.YEARS_30
};
LoanProcessingService service = new LoanProcessingService(Rates,
new CreditScoreLoanApprovalRule(),
new LoanSizeLoanApprovalRule()
);
// Act
var result = service.ProcessLoan(application);
// Assert
Assert.IsNotNull(result.MonthlyPayment);
Assert.AreEqual(1539.29, result.MonthlyPayment.Value);
}
public void TestLoansOverOneMillionDollarsShouldBeDenied()
{
// Arrange
var application = new LoanApplication()
{
FirstName = "John",
LastName = "Doe",
AnnualIncome = 250_000,
CreditScore = 95,
LoanAmount = 1_000_001,
Term = LoanTerm.YEARS_30
};
LoanProcessingService service = new LoanProcessingService(Rates,
new CreditScoreLoanApprovalRule(),
new LoanSizeLoanApprovalRule()
);
// Act
var result = service.ProcessLoan(application);
// Assert
Assert.IsFalse(result.Approved);
}
}
public CreateModel(LoanProcessingService loanProcessingService, ILoanApplicationResultRepository resultRepository)
{
_loanProcessingService = loanProcessingService;
_resultRepository = resultRepository;
}
