public void ShouldReturnNullIfNotSufficientOffers()
{
// arrange
var requestedAmount = 1000m;
var lenderOffers =
new[]
{
new LenderOffer {
Rate = 0.104m, Available = 170
},
new LenderOffer {
Rate = 0.081m, Available = 320
},
new LenderOffer {
Rate = 0.074m, Available = 140
},
new LenderOffer {
Rate = 0.071m, Available = 60
},
};
var repaymentCalculationStrategy = new RepaymentCalculationStrategy();
IQuoteCalculator quoteCalculator = new QuoteCalculator(repaymentCalculationStrategy);
// act
var resultQuote = quoteCalculator.Calculate(lenderOffers, requestedAmount, NumberOfMonths);
// assert
Assert.That(resultQuote, Is.Null);
}
public void ShouldReturnAggregatedQuoteForMulipleLenderOffers()
{
// arrange
var requestedAmount = 1000m;
var lenderOffers =
new[]
{
new LenderOffer {
Available = 480, Rate = 0.069m
},
new LenderOffer {
Available = 520, Rate = 0.071m
},
};
var repaymentCalculationStrategy = new RepaymentCalculationStrategy();
IQuoteCalculator quoteCalculator = new QuoteCalculator(repaymentCalculationStrategy);
// act
var resultQuote = quoteCalculator.Calculate(lenderOffers, requestedAmount, NumberOfMonths);
// assert
Assert.That(Math.Round(resultQuote.Rate * 100, 1),
Is.EqualTo(7));
Assert.That(Math.Round(resultQuote.MonthlyRepayment, 2),
Is.EqualTo(30.78m));
Assert.That(Math.Round(resultQuote.TotalRepayment, 2),
Is.EqualTo(1108.10m));
}
public void ShouldReturnProperMonthlyRepayment()
{
// arrange
var requestedAmount = 1000m;
var rate = 0.07m;
var numberOfMonths = 36;
IRepaymentCalculationStrategy repaymentCalculationStrategy = new RepaymentCalculationStrategy();
// act
var result = repaymentCalculationStrategy.Calculate(requestedAmount, rate, numberOfMonths);
// assert
Assert.That(Math.Round(result, 2), Is.EqualTo(30.78m));
}
public void ShouldChooseOffersWithTheLowestRates()
{
// arrange
var requestedAmount = 1000m;
var lenderOffers =
new[]
{
new LenderOffer {
Rate = 0.075m, Available = 640
},
new LenderOffer {
Rate = 0.069m, Available = 480
},
new LenderOffer {
Rate = 0.071m, Available = 520
},
new LenderOffer {
Rate = 0.104m, Available = 170
},
new LenderOffer {
Rate = 0.081m, Available = 320
},
new LenderOffer {
Rate = 0.074m, Available = 140
},
new LenderOffer {
Rate = 0.071m, Available = 60
},
};
var repaymentCalculationStrategy = new RepaymentCalculationStrategy();
IQuoteCalculator quoteCalculator = new QuoteCalculator(repaymentCalculationStrategy);
// act
var resultQuote = quoteCalculator.Calculate(lenderOffers, requestedAmount, NumberOfMonths);
// assert
Assert.That(Math.Round(resultQuote.MonthlyRepayment, 2),
Is.EqualTo(30.78m));
Assert.That(Math.Round(resultQuote.TotalRepayment, 2),
Is.EqualTo(1108.10m));
}