public void length_odd_should_return_middle_two_char(string s, string expected)
{
var target = new StringProceor();
var actual = target.GetMiddle(s);
Assert.AreEqual(expected, actual);
}
public void input_empty_should_return_empty()
{
var target = new StringProceor();
var str = "";
var expected = "";
var actual = target.GetMiddle(str);
Assert.AreEqual(expected, actual);
}
