public void WriteCsvTest()
{
char cr = Convert.ToChar(13);
char lf = Convert.ToChar(10);
string crlf = Convert.ToString(cr);
crlf += lf;
var sa = new StrArray();
sa.Add("A");
sa.Add("B");
sa.Add("C");
string expected = "A" + crlf + "B" + crlf + "C" + crlf;
Assert.AreEqual(expected, sa.WriteCsv());
}