def setUp(self):

        self.turbine = TurbineCostAdder()

        self.turbine.offshore = True
        self.turbine.rotor_cost = 1519510.91
        self.turbine.nacelle_cost = 3043115.22
        self.turbine.tower_cost = 1031523.34
    def test1(self):

        turbine = TurbineCostAdder()

        turbine.offshore = True
        turbine.rotor_cost = 2000000.0
        turbine.nacelle_cost = 5000000.0
        turbine.tower_cost = 1000000.0

        check_gradient_unit_test(self, turbine)