public void Add_NullInputs_Return0()
{
Assert.IsTrue(Calculator.Add(null, null) == "0" && Calculator.Add(null, "24") == "0" || Calculator.Add("55", null) == "0");
}
public void EmptyString()
{
Assert.AreEqual("0", calculator.Add(""));
}
public void Add_NonNumericInput_Return0()
{
string a = Calculator.Add("e334", "33d3fd");
StringAssert.StartsWith(a, "0");
}
