public void TestRot13()
{
var secret = "OlEdId";
var expected = "ByRqVq";
var actual = CaesarCipher.ShiftCharacters(secret, 13);
Assert.Equal(expected, actual);
}
public void TestNegativeRot1()
{
var secret = "OLEDID";
var expected = "NKDCHC";
var actual = CaesarCipher.ShiftCharacters(secret, -1);
Assert.Equal(expected, actual);
}
public void ThrowsIfNotLetter()
{
var secret = "OlEdId1";
Assert.Throws <ArgumentException>(() => CaesarCipher.ShiftCharacters(secret, 13));
}
