def test1(self):

        generator = GeneratorCost()

        generator.generator_mass = 16699.85
        generator.year = 2009
        generator.month = 12
        generator.drivetrain_design = "geared"
        generator.machine_rating = 5000.0

        check_gradient_unit_test(self, generator)
    def test1(self):

        generator = GeneratorCost()

        generator.generator_mass = 16699.85
        generator.year = 2009
        generator.month = 12
        generator.drivetrain_design = 'geared'
        generator.machine_rating = 5000.0

        check_gradient_unit_test(self, generator)