public void Replace_Should_Replace_Old_Value_With_New_Value()
{
string numbers = "1,2\n3";
replacer.Replace(ref numbers, "\n", ",");
Assert.AreEqual("1,2,3", numbers);
}
public int Add(string numbers)
{
int sum = 0;
// null, empty or whitespace input
if (string.IsNullOrWhiteSpace(numbers))
{
return(sum);
}
// validate input
if (!validator.IsValid(numbers))
{
throw new Exception("Invalid Input");
}
// default delimiter
char delimiter = ',';
// delimiter array to hold multiple delimiter
char[] delimiterArray = new char[] {};
// get numbers input if multiple delimiters present
// if single delimiter present then add it to delimiters array
numbers = numbersExtractor.ExtractNumbers(numbers, delimiter, ref delimiterArray);
// replace new line character with default or first delimiter
replacer.Replace(ref numbers, "\\n", delimiterArray[0].ToString());
//Console.WriteLine(numbers);
// calculate sum
if (delimiterArray.Length == 0)
{
// with no delimiter
sum = Convert.ToInt32(numbers);
}
else
{
// with single or multiple delimeters
sum = this.sumCalculator.CalculateSum(numbers, delimiterArray);
}
return(sum);
}
