public void TestRotorOffsets()
{
var socket = new RotorSocket(Rotor.Create("I"));
Assert.AreEqual('A', socket.CurrentRingLetter);
socket.Advance();
Assert.AreEqual('B', socket.CurrentRingLetter);
socket.Reset();
Assert.AreEqual('A', socket.CurrentRingLetter);
for (int i = 0; i < 26; i++)
{
socket.Advance();
}
Assert.AreEqual('A', socket.CurrentRingLetter);
}
public void TestNotch()
{
var socket = new RotorSocket(Rotor.Create("I"));
while (!socket.IsSocketInNotchPosition)
{
socket.Advance();
}
Assert.AreEqual('Q', socket.CurrentRingLetter);
}
public void TestLetterMappingsWithRotorOffsetSettings()
{
var socket = new RotorSocket(Rotor.Create("I", 'B'));
Assert.AreEqual('K', socket.GetMappedLetter('A'));
Assert.AreEqual('A', socket.GetMappedLetter('K', LetterMapper.MappingDirection.LeftToRight));
socket.Advance();
Assert.AreEqual('E', socket.GetMappedLetter('A'));
Assert.AreEqual('A', socket.GetMappedLetter('E', LetterMapper.MappingDirection.LeftToRight));
}
public void TestLetterMappings()
{
var socket = new RotorSocket(Rotor.Create("I"));
Assert.AreEqual('E', socket.GetMappedLetter('A'));
Assert.AreEqual('A', socket.GetMappedLetter('E', LetterMapper.MappingDirection.LeftToRight));
//If for example rotor I is in the B-position, an A enters at the letter B
//which is wired to the K. Because of the offset this K enters the next rotor in the J position.
socket.Advance();
Assert.AreEqual('J', socket.GetMappedLetter('A'));
Assert.AreEqual('A', socket.GetMappedLetter('J', LetterMapper.MappingDirection.LeftToRight));
}
private void MoveRotors()
{
bool slowRotorIncremented = false;
if (_middleRotor.IsSocketInNotchPosition)
{
slowRotorIncremented = true;
_slowRotor = _slowRotor.Advance();
}
if (_fastRotor.IsSocketInNotchPosition || slowRotorIncremented)
{
_middleRotor = _middleRotor.Advance();
}
_fastRotor = _fastRotor.Advance();
}