public void SetupCalculator()
        {
            Console.Clear();

            Console.WriteLine(_banner.RenderBanner());
            Console.WriteLine("Please enter a number: ");
            var  userInput = Console.ReadLine();
            long numberToCalculate;

            while (!long.TryParse(userInput, out numberToCalculate))
            {
                Console.WriteLine("Not a valid number! Please enter a number: ");
                userInput = Console.ReadLine();
            }

            var calculation = new Calculation(numberToCalculate);

            while (calculation.NumberToCalculate > 1)
            {
                if (_checkIsOdd.NumberIsOdd(calculation.NumberToCalculate))
                {
                    calculation.NumberToCalculate = _isOddRule.ApplyIsOddRule(calculation.NumberToCalculate);
                }
                else
                {
                    calculation.NumberToCalculate = _isEvenCalculationRule.CalculateOutput(calculation.NumberToCalculate);
                }

                calculation.StepsTaken++;
                Console.Write(calculation.NumberToCalculate + ", ");
            }

            Console.WriteLine("\nSteps taken: " + calculation.StepsTaken);
            CalculateAgainQuestion();
        }
        public void NumberIsOdd_ReturnsCorrectBoolValue()
        {
            // Arrange
            var inputNumber = 11;

            // Act
            var result = _checkIsOdd.NumberIsOdd(inputNumber);

            // Assert
            Assert.True(result);
        }