public void CalculateBestRate_WhenLenderIsLeftWithSomeMoneyAfterLendingToBorrower_ReturnsWeightedRateUsingTheUtilisedMoney()
{
const double requestedAmt = 1200.0d;
var mockLender1 = CreateMockLender(700, 0.10);
var mockMarketData1 = CreateMockMarketData(mockLender1);
var mockLender2 = CreateMockLender(800, 0.04);
var mockMarketData2 = CreateMockMarketData(mockLender2);
var calculator = new MarketDataRateCalculator(new List <IMarketData> {
mockMarketData1, mockMarketData2
});
var rate = calculator.CalculateBestRate(requestedAmt);
Assert.AreEqual(0.06, rate);
}
public void CalculateBestRate_WhenRequestedAmountIsLessThanLenderAmtAndThereAre2Lenders_ReturnsWeightedRate()
{
const double requestedAmt = 1000.0d;
var mockLender1 = CreateMockLender(600, 0.05);
var mockMarketData1 = CreateMockMarketData(mockLender1);
var mockLender2 = CreateMockLender(400, 0.07);
var mockMarketData2 = CreateMockMarketData(mockLender2);
var calculator = new MarketDataRateCalculator(new List <IMarketData> {
mockMarketData1, mockMarketData2
});
var rate = calculator.CalculateBestRate(requestedAmt);
Assert.AreEqual(0.058, rate);
}
public void MarketDataRateCalculator_WhenRequestedAmountIsMoreThanTotalMarketMoney_ThrowsException()
{
const double requestedAmt = 1200;
const double lenderAmt = 1000.0d;
const double lenderRate = 0.07d;
var mockMarketData = MockRepository.GenerateMock <IMarketData>();
var mockLender = CreateMockLender(lenderAmt, lenderRate);
mockMarketData.Stub(m => m.Lender).Return(mockLender);
var calculator = new MarketDataRateCalculator(new List <IMarketData> {
mockMarketData
});
ExceptionAssert.Throws <Exception>(() => calculator.CalculateBestRate(requestedAmt));
}
public void CalculateBestRate_WhenRequestedAmountIsEqualToLenderAmtAndThereIsOnlyOneLender_ReturnsLenderRate()
{
const double requestedAmt = 1000.0d;
const double lenderAmt = 1000.0d;
const double lenderRate = 0.07d;
var mockMarketData = MockRepository.GenerateMock <IMarketData>();
var mockLender = CreateMockLender(lenderAmt, lenderRate);
mockMarketData.Stub(m => m.Lender).Return(mockLender);
var calculator = new MarketDataRateCalculator(new List <IMarketData> {
mockMarketData
});
var rate = calculator.CalculateBestRate(requestedAmt);
Assert.AreEqual(0.07, rate);
}
