public void CarCalculator_ReturnsAverage_Correct()
        {
            //Arrange
            CarCalculator calc = new CarCalculator();

            initialiser.CarListInitialiser();
            var carList = initialiser.CarList;

            //Act
            var result = calc.AveragePriceCalculator(carList);


            //Assert
            Assert.AreEqual(25500, result);
        }
        public void ReturnOldestCar_()
        {
            //Arrange
            CarCalculator calc = new CarCalculator();

            initialiser.CarListInitialiser();
            var carList = initialiser.CarList;


            //Act
            var result = calc.ReturnOldestCar(carList);


            //Assert
            Assert.AreEqual("The oldest car is the 2002, Datsun.", result);
        }