public void IsValidGuess_WrongNumberOfDigitsInvalid()
{
// arrange
MasterMindBll masterMindBll = CreateSingleDigitNewMasterMindBll();
// act
bool isValidGuess = masterMindBll.IsValidGuess("123456");
// assert
Assert.IsFalse(isValidGuess);
}
public void IsValidGuess_LettersInvalid()
{
// arrange
MasterMindBll masterMindBll = CreateSingleDigitNewMasterMindBll();
// act
bool isValidGuess = masterMindBll.IsValidGuess("a");
// assert
Assert.IsFalse(isValidGuess);
}