public ActionResult DoSumming(SummingModel model)
{
if (ModelState.IsValid)
{
bool hasErrors = false;
RomanNumber leftOperand;
RomanNumber rightOperand;
if (!RomanNumber.TryParse(model.LeftOperand, out leftOperand))
{
ModelState.AddModelError("LeftOperand", string.Format("'{0}' is not a valid Roman number", model.LeftOperand));
hasErrors = true;
}
if (!RomanNumber.TryParse(model.RightOperand, out rightOperand))
{
ModelState.AddModelError("RightOperand", string.Format("'{0}' is not a valid Roman number", model.RightOperand));
hasErrors = true;
}
if (!hasErrors)
{
Abacus abacus = new RomanAbacus(100); // Roman abacus wil be able to handle hundreds of thousands
ViewBag.SummingResult = abacus.PerformSumming(model.LeftOperand, model.RightOperand);
}
}
InitSummingView();
return View("Index", model);
}
public void PerformSumming_UsingInvalidRomanNumberAsRightOperand_ThrowsException()
{
const string leftOperand = "MMC";
const string rightOperand = "12";
RomanAbacus romanAbacus = new RomanAbacus(100);
romanAbacus.PerformSumming(leftOperand, rightOperand);
}
public void PerformSumming_UsingValidRomanNumbers_ReturnsCorrectResult()
{
const string leftOperand = "MMC";
const string rightOperand = "LX";
RomanAbacus romanAbacus = new RomanAbacus(100);
string actualResult = romanAbacus.PerformSumming(leftOperand, rightOperand);
Assert.AreEqual("MMCLX", actualResult);
}
public void Constructor_UsingValidThousandThreshold_DoesNotThrowException([Values(1, 10)] int validThousandThreshold)
{
RomanAbacus romanAbacus = new RomanAbacus(validThousandThreshold);
}
public void Constructor_UsingInvalidThousandThreshold_ThrowsException([Values(-1, 0)] int invalidThousandThreshold)
{
RomanAbacus romanAbacus = new RomanAbacus(invalidThousandThreshold);
}