public void TestParse()
{
List <MarketRate> rates;
MarketRateCsvParser parser = new MarketRateCsvParser();
MemoryStream stream = new MemoryStream();
StreamWriter writer = new StreamWriter(stream);
writer.WriteLine("Lender,Rate,Available");
writer.WriteLine("Alice,0.05,1000");
writer.WriteLine("Bob,0.01,500");
writer.Flush();
stream.Position = 0;
rates = parser.Parse(new StreamReader(stream));
Assert.AreEqual(rates.Count, 2);
MarketRate rate = rates[0];
Assert.AreEqual("Alice", rate.Lender, "Lender check failed");
Assert.AreEqual((float)0.05, rate.Rate, "Rate check failed");
Assert.AreEqual(1000, rate.AmountAvailable, "Amount check failed");
rate = rates[1];
Assert.AreEqual("Bob", rate.Lender, "Lender check failed");
Assert.AreEqual((float)0.01, rate.Rate, "Rate check failed");
Assert.AreEqual(500, rate.AmountAvailable, "Amount check failed");
}
static void Main(string[] args)
{
// Parse command line
string marketFile = "";
int loanAmount = 0;
const int loanDuration = 36; // Not parameterised for the purposes of this test
if (!parseCommandLine(args, ref marketFile, ref loanAmount))
{
Console.WriteLine("Usage: zopa <location of market rate file> <requested loan amount>");
return;
}
Console.WriteLine("Processing market file " + marketFile + " for a loan of " + loanAmount.ToString());
// Process market file
MarketRateCsvParser parser = new MarketRateCsvParser();
List <MarketRate> marketRates;
StreamReader marketStream = new System.IO.StreamReader(marketFile);
marketRates = parser.Parse(marketStream);
// Pass this to the loan aggregator to compute the loans
LoanAggregator loanAgg = new LoanAggregator();
loanAgg.FindLoans(marketRates, loanAmount, loanDuration);
// Finally, output the results
Console.WriteLine("Requested Amount: " + loanAgg.LoanAmount.ToString("c2"));
Console.WriteLine("Rate: " + (loanAgg.Rate * 100).ToString("n1") + "%");
Console.WriteLine("Monthly Repayment: " + loanAgg.MonthlyPayments.ToString("c2"));
Console.WriteLine("Total Replayment: " + loanAgg.TotalRepayment.ToString("c2"));
}
public void TestHeadersInvalid()
{
Dictionary <MarketRateCsvParser.MarketDataFields, int> fieldMapping;
MarketRateCsvParser parser = new MarketRateCsvParser();
string data = "Lender,Available";
fieldMapping = parser.ParseHeader(data);
}
public void TestHeadersValid()
{
Dictionary <MarketRateCsvParser.MarketDataFields, int> fieldMapping;
MarketRateCsvParser parser = new MarketRateCsvParser();
string data = "Lender,Rate,Available";
fieldMapping = parser.ParseHeader(data);
Assert.AreEqual(2, fieldMapping[MarketRateCsvParser.MarketDataFields.Available], "Available check failed");
Assert.AreEqual(1, fieldMapping[MarketRateCsvParser.MarketDataFields.Rate], "Rate check failed");
Assert.AreEqual(0, fieldMapping[MarketRateCsvParser.MarketDataFields.Lender], "Lender check failed");
data = "Available,Lender,Rate";
fieldMapping = parser.ParseHeader(data);
Assert.AreEqual(0, fieldMapping[MarketRateCsvParser.MarketDataFields.Available], "Available check failed");
Assert.AreEqual(2, fieldMapping[MarketRateCsvParser.MarketDataFields.Rate], "Rate check failed");
Assert.AreEqual(1, fieldMapping[MarketRateCsvParser.MarketDataFields.Lender], "Lender check failed");
data = "Rate,Lender,Available";
fieldMapping = parser.ParseHeader(data);
Assert.AreEqual(2, fieldMapping[MarketRateCsvParser.MarketDataFields.Available], "Available check failed");
Assert.AreEqual(0, fieldMapping[MarketRateCsvParser.MarketDataFields.Rate], "Rate check failed");
Assert.AreEqual(1, fieldMapping[MarketRateCsvParser.MarketDataFields.Lender], "Lender check failed");
}