public void AddReturnSum1And2()
{
StringSumma stringSum = new StringSumma();
string num1 = "2";
string num2 = "1";
string expected = "3";
var result = stringSum.Sum(num1, num2);
Assert.AreEqual(expected, result);
}
public void AddReturnSum0()
{
StringSumma stringSum = new StringSumma();
string num1 = "";
string num2 = null;
string expected = "0";
var result = stringSum.Sum(num1, num2);
Assert.AreEqual(expected, result);
}
