public int CountSequencesFromKey(Key key, KeypadSequence sequence)
{
if (!sequence.IsValidSequence())
return 0;
if (sequence.Length == _pathSize)
return 1;
int count = 0;
var possibleMoves = this._moveStrategy.GetPossibleMoves(key);
foreach (var move in possibleMoves)
count += CountSequencesFromKey(move, _board.KeyPress(move, new KeypadSequence(sequence)));
return count;
}
public void test_sequence_with_more_than_2_vowels_is_invalid()
{
var sequence = new KeypadSequence();
sequence.Add(Key.A).Add(Key.B).Add(Key.E).Add(Key.I);
Assert.IsFalse(sequence.IsValidSequence());
}
public void test_sequence_with_lessthan_2_vowels_is_valid()
{
var sequence = new KeypadSequence();
sequence.Add(Key.A).Add(Key.C).Add(Key.D);
Assert.IsTrue(sequence.IsValidSequence());
}