public void ItShouldReturnExpectedValue(RotorCraft rotorCraft)
            {
                engineaddition.Setup(dec => dec.AddTurboshaftEngines(It.IsAny<RotorCraft>())).Returns(() => rotorCraft);
                var somecraft = heavierThanAirAircraftFactory.TryMakeRotorCraft(rotorCraft.SerialNumber, rotorCraft.RotorBlades.ToList(), "singular", 2, 56, "linx", 12000);

                Assert.AreEqual(rotorCraft.ToString(), somecraft.ToString());
            }