public static string Solve(string rnExpression)
{
string normalExpression = RomanExpression.ChangeRomanExpressionToNormalExpression(rnExpression);
string rpn = RPN.ConvertToRPN(normalExpression);
int decimalResult = RPN.SolveRPN(rpn);
string romanResult = new RomanNumeral(decimalResult).romanNumeralStr;
return(romanResult);
}
public void SolveRPN_FractionWhileSolving_ReturnRPN()
{
var ex = Assert.Throws <ArgumentException>(() => RPN.SolveRPN("2 1 2 / *"));
StringAssert.Contains("This isn't roman numeral!", ex.Message);
}
public void SolveRPN_ValidExpression_ReturnRPN(string expression, int expected)
{
int result = RPN.SolveRPN(expression);
Assert.AreEqual(expected, result);
}