public void Mul_Numbers_ReturnsSum(string input, int result)
{
//Arrange
StringCalculator calculator = new StringCalculator();
int answer = 0;
//Act
answer = calculator.Mul(input);
//Assert
Assert.AreEqual(result, answer);
}
static void Main(string[] args)
{
Console.WriteLine("Hello World this is a very simple string calculator:");
Console.WriteLine("Add(1,2,3)--> 1 + 2 + 3 = 6");
Console.WriteLine("Mul(2,4,8,16)--> 2 * 4 * 8 * 16 = 1024\n");
StringCalculator calc = new StringCalculator();
Console.WriteLine(calc.Add("1,2,3"));
Console.WriteLine(calc.Mul("2,4,8,16"));
//what happens if we call calc.Add("a,1"); ???
}