static void Main(string[] args)
{
var keepGoing = true;
Console.WriteLine("Enter individual credit card numbers at the prompt:");
Console.WriteLine("Enter 'f' to enter an input file name:");
Console.WriteLine("Enter 'x' to exit:");
ICreditCardValidator validator = new LuhnValidator();
ICreditCardFactory factory = new CreditCardFactory(validator, CARDDEFINITIONS);
while (keepGoing)
{
Console.Write("Enter card number > ");
var cardNumber = Console.ReadLine();
if (cardNumber == "x")
{
keepGoing = false;
}
else if (cardNumber == "f")
{
Console.Write("Enter a file name of credit card numbers > ");
var filename = Console.ReadLine();
if (!File.Exists(filename))
{
Console.WriteLine("File does not exist: " + filename);
}
else
{
try
{
using (StreamReader sr = new StreamReader(filename))
{
while ((cardNumber = sr.ReadLine()) != null)
{
CreditCard card = factory.CreateCreditCard(cardNumber);
var result = card.ToString();
Console.WriteLine(result);
}
}
}
catch (Exception e)
{
Console.WriteLine("The file could not be read:");
Console.WriteLine(e.Message);
}
}
}
else
{
CreditCard card = factory.CreateCreditCard(cardNumber);
var result = card.ToString();
Console.WriteLine(result);
}
}
}
public void ShouldValidateCreditCardNumber(object value)
{
bool result = new LuhnValidator().Validate(value.ToString());
Assert.Equal(true, result);
}
