public void Constructor_SetCreditStoreBand_High()
{
var calculatorFloor = new CreditScoreCalculator(851);
Assert.Equal(CreditScoreBands.High, calculatorFloor.CreditScoreBand);
var calculatorCeiling = new CreditScoreCalculator(1000);
Assert.Equal(CreditScoreBands.High, calculatorCeiling.CreditScoreBand);
}
public void Constructor_SetCreditStoreBand_Medium()
{
var calculatorFloor = new CreditScoreCalculator(701);
Assert.Equal(CreditScoreBands.Medium, calculatorFloor.CreditScoreBand);
var calculatorCeiling = new CreditScoreCalculator(850);
Assert.Equal(CreditScoreBands.Medium, calculatorCeiling.CreditScoreBand);
}
public void Constructor_SetCreditStoreBand_Low()
{
var calculatorFloor = new CreditScoreCalculator(451);
Assert.Equal(CreditScoreBands.Low, calculatorFloor.CreditScoreBand);
var calculatorCeiling = new CreditScoreCalculator(700);
Assert.Equal(CreditScoreBands.Low, calculatorCeiling.CreditScoreBand);
}
public void Constructor_SetCreditStoreBand_Ineligible()
{
var calculatorFloor = new CreditScoreCalculator(0);
Assert.Equal(CreditScoreBands.Ineligible, calculatorFloor.CreditScoreBand);
var calculatorCeiling = new CreditScoreCalculator(450);
Assert.Equal(CreditScoreBands.Ineligible, calculatorCeiling.CreditScoreBand);
}
public decimal CalculateCredit(Customer customer)
{
var creditScoreCalculator = new CreditScoreCalculator(customer.BureauScore);
var missedPaymentsCalculator = new MissedPaymentsCalculator(customer.MissedPaymentCount);
var completedPaymentsCalculator = new CompletedPaymentsCalculator(customer.CompletedPaymentCount);
if (creditScoreCalculator.CreditScoreBand == CreditScoreBands.Ineligible)
{
throw new InvalidCreditScoreException("Customer's credit score is too low.");
}
var maximumPoints = creditScoreCalculator.GetScore() + missedPaymentsCalculator.GetScore() + completedPaymentsCalculator.GetScore();
var ageAdjustedPoints = ApplyAgePointsCeiling(maximumPoints, customer.AgeInYears);
return(CalculateAvailableCreditFromPoints(ageAdjustedPoints));
}
public void GetScore_High()
{
var calculator = new CreditScoreCalculator(925);
Assert.Equal(3, calculator.GetScore());
}
public void GetScore_Medium()
{
var calculator = new CreditScoreCalculator(800);
Assert.Equal(2, calculator.GetScore());
}
public void GetScore_Low()
{
var calculator = new CreditScoreCalculator(600);
Assert.Equal(1, calculator.GetScore());
}
public void GetScore_Ineligible()
{
var calculator = new CreditScoreCalculator(200);
Assert.Throws <IneligibleCreditScoreException>(() => calculator.GetScore());
}