public static void Main(string[] args)
{
var userInterface = new UserInterface();
if (!userInterface.AreInputsValid(args))
{
userInterface.DisplayUsageMessage();
}
var file = args[0];
var amount = int.Parse(args[1]);
var appSettings = new AppSettings();
var marketDataDataAccess = new MarketDataDataAccess(new FileSystem(), appSettings, file);
try
{
var marketData = marketDataDataAccess.ReadAllMarketData();
var loanCalculator = new LoanCalculator(marketData, appSettings, amount);
var quote = loanCalculator.Calculate();
userInterface.DisplayQuote(quote);
}
catch (Exception e)
{
userInterface.DisplayExceptionMessage(e);
}
}
public void ReadAllMarketData_WhenFileDoesntExist_ThrowsException()
{
var fileSystem = new FileSystem();
var marketDataDataAccess = new MarketDataDataAccess(fileSystem, _appSettingsMock.Object, FileName);
Action action = () => marketDataDataAccess.ReadAllMarketData();
action.ShouldThrow <FileNotFoundException>();
}
public void ReadAllMarketData_WhenNoData_ThrowsException()
{
var fileSystem = new MockFileSystem(new Dictionary <string, MockFileData>
{
{ FileName, new MockFileData("") }
});
var marketDataDataAccess = new MarketDataDataAccess(fileSystem, _appSettingsMock.Object, FileName);
Action action = () => marketDataDataAccess.ReadAllMarketData();
action.ShouldThrow <CsvFileEmptyException>().WithMessage("The CSV file is empty.");
}
public void ReadAllMarketData_WhenNoLendersExist_ThrowsException()
{
var fileSystem = new MockFileSystem(new Dictionary <string, MockFileData>
{
{ FileName, new MockFileData("Lender,Rate,Available") }
});
var marketDataDataAccess = new MarketDataDataAccess(fileSystem, _appSettingsMock.Object, FileName);
Action action = () => marketDataDataAccess.ReadAllMarketData();
action
.ShouldThrow <CsvFileNoLendersException>()
.WithMessage("The CSV file contains no lenders.");
}
public void ReadAllMarketData_WhenDataCorrupt_ThrowsException(string problemLines)
{
var fileSystem = new MockFileSystem(new Dictionary <string, MockFileData>
{
{ FileName, new MockFileData("Lender,Rate,Available" + Environment.NewLine + problemLines) }
});
var marketDataDataAccess = new MarketDataDataAccess(fileSystem, _appSettingsMock.Object, FileName);
Action action = () => marketDataDataAccess.ReadAllMarketData();
action
.ShouldThrow <CsvFileCorruptionException>()
.WithMessage($"The CSV file is corrupt at this row: '{GetLastLine(problemLines)}'.");
}
public void ReadAllMarketData_WhenHeaderCorrupt_ThrowsException(string header)
{
var fileSystem = new MockFileSystem(new Dictionary <string, MockFileData>
{
{ FileName, new MockFileData(header) }
});
var marketDataDataAccess = new MarketDataDataAccess(fileSystem, _appSettingsMock.Object, FileName);
Action action = () => marketDataDataAccess.ReadAllMarketData();
action
.ShouldThrow <CsvHeaderCorruptionException>()
.WithMessage($"The header of the CSV file is corrupt: '{header}'.");
}
public void ReadAllMarketData_WhenDataExists_LoadsAllData(string lenders)
{
var fileSystem = new MockFileSystem(new Dictionary <string, MockFileData>
{
{ FileName, new MockFileData("Lender,Rate,Available" + Environment.NewLine + lenders) }
});
_expectedLenders.Add(new Lender("Lender 1", 0.015m, 100));
_expectedLenders.Add(new Lender("Lender 2", 0.05m, 1000));
var marketDataDataAccess = new MarketDataDataAccess(fileSystem, _appSettingsMock.Object, FileName);
var result = marketDataDataAccess.ReadAllMarketData();
result.ShouldBeEquivalentTo(_expectedLenders);
}