public char GetMappedLetter(char letter, LetterMapper.MappingDirection direction = LetterMapper.MappingDirection.RightToLeft)
{
var entryLetter = GetEntryLetter(letter);
char mappedLetter = _rotor.GetMappedLetter(entryLetter, direction);
return GetOutputLetter(mappedLetter);
}
public void CheckMapsString()
{
string expectedResult = "ABC";
string actualResult = LetterMapper.CreateLettersString(new Letters[] { Letters.A, Letters.B, Letters.C });
Assert.That(actualResult, Is.EqualTo(expectedResult));
}
public void CheckEntryWheelGivesCorrectOutputValue()
{
EntryWheel e = new EntryWheel(LetterMapper.CreateLettersArray("QWERTZUIOASDFGHJKPYXCVBNML"));
Letters result = e.GetOutput(Letters.Q);
Assert.That(result, Is.EqualTo(Letters.A));
}
public string GetOutput(string text)
{
Letters[] inputText = LetterMapper.CreateLettersArray(text);
Letters[] outputText = new Letters[inputText.Length];
for (int i = 0; i < inputText.Length; i++)
{
outputText[i] = GetOutput(inputText[i]);
}
return(LetterMapper.CreateLettersString(outputText));
}
public void CheckMapsLetters()
{
Letters[] expectedResult = new Letters[]
{
Letters.A,
Letters.B,
Letters.C
};
Letters[] actualResult = LetterMapper.CreateLettersArray("ABC");
Assert.That(actualResult, Is.EqualTo(expectedResult));
}
public void CheckReflectorCreatesCorrectOutput()
{
Reflector r = new Reflector(LetterMapper.CreateLettersArray("ZYXWVUTSRQPONMLKJIHGFEDCBA"));
Letters result;
result = r.GetOutput(Letters.A);
Assert.That(result, Is.EqualTo(Letters.Z));
result = r.GetOutput(Letters.Z);
Assert.That(result, Is.EqualTo(Letters.A));
}
public void CheckEncypheredMessageDecyphers()
{
Scrambler s = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.A), Rotor.RotorII(Letters.A, Letters.A), Rotor.RotorIII(Letters.A, Letters.A));
Letters[] expectedPlaintext = LetterMapper.CreateLettersArray("THISISMYTESTMESSAGE");
Letters[] cyphertext = LetterMapper.CreateLettersArray("OPGNDXOEHCJEXBEDDUO");
Letters[] plaintext = new Letters[cyphertext.Length];
for (int i = 0; i < cyphertext.Length; i++)
{
plaintext[i] = s.GetOutput(cyphertext[i]);
}
Assert.That(plaintext, Is.EqualTo(expectedPlaintext));
}
public void CheckEncypheredMessageDecyphersWithRolloverAndRingF()
{
Scrambler s = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.A), Rotor.RotorII(Letters.A, Letters.A), Rotor.RotorIII(Letters.F, Letters.A));
Letters[] expectedPlaintext = LetterMapper.CreateLettersArray("THISMESSAGEWILLCAUSEROLLOVER");
Letters[] cyphertext = LetterMapper.CreateLettersArray("UFVWRFXPGFNQBAPWSVNSFXOGCPPK");
Letters[] plaintext = new Letters[cyphertext.Length];
for (int i = 0; i < cyphertext.Length; i++)
{
plaintext[i] = s.GetOutput(cyphertext[i]);
}
Assert.That(plaintext, Is.EqualTo(expectedPlaintext));
}
public void CheckEncypheredMessageDecyphersWithMoreRollover()
{
Scrambler s = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.A), Rotor.RotorII(Letters.A, Letters.A), Rotor.RotorIII(Letters.A, Letters.A));
Letters[] expectedPlaintext = LetterMapper.CreateLettersArray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
Letters[] cyphertext = LetterMapper.CreateLettersArray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
Letters[] plaintext = new Letters[cyphertext.Length];
for (int i = 0; i < cyphertext.Length; i++)
{
plaintext[i] = s.GetOutput(cyphertext[i]);
}
Assert.That(plaintext, Is.EqualTo(expectedPlaintext));
}
public void CheckEncypheredMessageDecyphersWithRollover()
{
Scrambler s = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.A), Rotor.RotorII(Letters.A, Letters.A), Rotor.RotorIII(Letters.A, Letters.A));
Letters[] expectedPlaintext = LetterMapper.CreateLettersArray("THISISALONGMESSAGETOTESTROLLOVERINTHEROTORS");
Letters[] cyphertext = LetterMapper.CreateLettersArray("OPGNDXCGMHUNLNECJZGJUPLWOVMOJFUJWQXGSUDEJVY");
Letters[] plaintext = new Letters[cyphertext.Length];
for (int i = 0; i < cyphertext.Length; i++)
{
plaintext[i] = s.GetOutput(cyphertext[i]);
}
Assert.That(plaintext, Is.EqualTo(expectedPlaintext));
}
public void CheckRotorFailsWithMapTooSmall()
{
Exception exception = Assert.Throws <Exception>(() => new Rotor(LetterMapper.CreateLettersArray("Z"), Letters.A, Letters.A, Letters.A));
Assert.That(exception.Message, Is.EqualTo("map is 1 but should be 26"));
}
public void CheckRotorFailsWithMapDuplicate()
{
Exception exception = Assert.Throws <Exception>(() => new Rotor(LetterMapper.CreateLettersArray("ZZXWVUTSRQPONMLKJIHGFEDCBA"), Letters.A, Letters.A, Letters.A));
Assert.That(exception.Message, Is.EqualTo("duplicate letter Z in map"));
}
public void CheckRotorFailsWithMapTooBig()
{
Exception exception = Assert.Throws <Exception>(() => new Rotor(LetterMapper.CreateLettersArray("zZYXWVUTSRQPONMLKJIHGFEDCBA"), Letters.A, Letters.A, Letters.A));
Assert.That(exception.Message, Is.EqualTo("map is 27 but should be 26"));
}
public void CheckReflectorFailsWithMapDirect()
{
Exception exception = Assert.Throws <Exception>(() => new Reflector(LetterMapper.CreateLettersArray("ABCDEFGHIJKLMNOPQRSTUVWXYZ")));
Assert.That(exception.Message, Is.EqualTo("reflector contains direct map for A"));
}
public void CheckEntryWheelSucceedsWithMapDirect()
{
EntryWheel e = new EntryWheel(LetterMapper.CreateLettersArray("ABCDEFGHIJKLMNOPQRSTUVWXYZ"));
}
public void CheckEntryWheelSucceedsWithMapQwertz()
{
EntryWheel e = new EntryWheel(LetterMapper.CreateLettersArray("QWERTZUIOASDFGHJKPYXCVBNML"));
}
