def METHOD_NAME(self):
    """Test it works if blend coordinate is scalar. """
    self.cube.add_aux_coord(AuxCoord(1, long_name="scalar_coord", units="no_unit"))
    coord = self.cube.coord("scalar_coord")
    plugin = NonLinearWeights(0.85)
    result = plugin.process(self.cube, coord)
    self.assertArrayAlmostEqual(result.data, np.array([1.0]))