public void FlightService_CalculateDistance(double latitude1, double longitude1, double latitude2, double longitude2, double distanceBetween) { var coordinate1 = new CoordinatesModel(latitude1, longitude1); var coordinate2 = new CoordinatesModel(latitude2, longitude2); var flightService = new FlightService(); var resultingDistance = flightService.CalculateDistanceWithHaversineFormulae(coordinate1, coordinate2); Assert.AreEqual(distanceBetween, resultingDistance); }