def METHOD_NAME(self):
    # Check the simple case of non-masked data with no scaling.
    cube = iris.cube.Cube(np.arange(5))
    grib_message = mock.sentinel.GRIB_MESSAGE
    with mock.patch(GRIB_API) as grib_api:
        data_section(cube, grib_message)
    # Check the use of a mask has been turned off.
    self.assertBitmapOff(grib_api)
    # Check the correct data values have been set.
    self.assertValues(grib_api, np.arange(5))