def METHOD_NAME(self):
    cf_name = "polar_stereographic"
    cf_grid_var = mock.Mock(
        spec=[],
        straight_vertical_longitude_from_pole=30,
        latitude_of_projection_origin=90,
        false_easting=0,
        false_northing=0,
        scale_factor_at_projection_origin=1,
        semi_major_axis=6377563.396,
        semi_minor_axis=6356256.909,
    )
    engine = _engine(cf_grid_var, cf_name)
    is_valid = has_supported_polar_stereographic_parameters(
        engine, cf_name
    )
    self.assertTrue(is_valid)