public void ParseTest(string input, string output)
{
var calc = new Calculator();
string parsed = "";
string exc = "";
try
{
parsed = calc.Parse(input).ToString();
}
catch (Exception e)
{
exc = e.Message;
}
finally
{
if (exc != "")
{
parsed = exc;
}
}
Assert.AreEqual(parsed, output);
}