private void validateButton_Click(object sender, EventArgs e)
{
var number = inputBox.Text;
if (string.IsNullOrEmpty(number))
{
return;
}
LogLn(string.Format("Validating number {0}:", number));
try
{
var ok = Luhn.Validate(number);
if (ok)
{
LogLn("\tOK");
}
else
{
LogLn(string.Format(
"\tKO: correct last number should be {0}", Luhn.Compute(number.Substring(0, number.Length - 1))));
}
}
catch (Exception ex)
{
Log(string.Format("\tError: {0}", ex.Message));
}
LogLn();
}
public void TestCompute()
{
var index = 0;
foreach (var testCard in testCards)
{
var input = testCard.Substring(0, testCard.Length - 1);
var expected = testCard.Substring(testCard.Length - 1);
var result = Luhn.Compute(input);
Assert.AreEqual(expected, result.ToString(), "Failed at index #" + index);
index++;
}
}
private void computeButton_Click(object sender, EventArgs e)
{
var number = inputBox.Text;
if (string.IsNullOrEmpty(number))
{
return;
}
LogLn(string.Format("Computing Luhn checksum for number {0}:", number));
try
{
var result = Luhn.Compute(number);
LogLn(string.Format("\tResult: {0} - Complete number is {1}", result, number + result.ToString()));
}
catch (Exception ex)
{
Log(string.Format("\tError: {0}", ex.Message));
}
LogLn();
}
public void TestInvalidInputThrowsInValidateAndCompute()
{
AssertEx.Throws <ArgumentException>(() => Luhn.Compute(".123foo456:"));
AssertEx.Throws <ArgumentException>(() => Luhn.Validate("*789baz012_"));
}
