public void PressKeyWithOneRotorReturnsCorrectLetter()
{
Rotor[] rotors = new Rotor[1];
rotors[0] = new Rotor();
Enigma enigma = new Enigma(rotors);
Assert.AreEqual('Z', enigma.PressKey('A'));
Assert.AreEqual('Y', enigma.PressKey('B'));
Assert.AreEqual('X', enigma.PressKey('C'));
Assert.AreEqual('W', enigma.PressKey('D'));
Assert.AreEqual('V', enigma.PressKey('E'));
Assert.AreEqual('U', enigma.PressKey('F'));
}