public void ValidateInputFormat_DataDriven(string guess, int guessLength, int digitMinVal, int digitMaxVal, bool expectedResult)
{
output.WriteLine($"Testing: guess:{guess}, guessLength:{guessLength}, digitMinVal:{digitMinVal}, digitMaxVal:{digitMaxVal}, expectedResult:{expectedResult}");
IGameDefinition definition = new GameDefinition(1, guessLength, digitMinVal, digitMaxVal);
var result = definition.ValidateInputFormat(guess, out string message);
// If success we expect no message, if fail, we expect a message
var messageAsExpected = result ? (string.IsNullOrEmpty(message)) : (message.Length > 0);
Assert.Equal(expectedResult, result);
Assert.True(messageAsExpected, "Message output not as expected");
}