public void CalculateFailed()
{
Assert.That(() =>
{
var calculator = new RomanCalculator();
calculator.Add(RomanNumber.I);
calculator.Add(RomanNumber.M);
var value = calculator.Value;
}, Throws.Exception.With.Message.EqualTo($"{RomanNumber.I.Symbol} can be only subtracted from {SymbolEnum.V} {SymbolEnum.X}."));
}
public void CalculateValue()
{
var calculator = new RomanCalculator();
calculator.Add(RomanNumber.I);
calculator.Add(RomanNumber.X);
var value = calculator.Value;
Assert.That(value, Is.EqualTo(9));
}
public void CanAdd()
{
string result = calculator.Add("I", "I");
Assert.AreEqual("II", result);
}
