def METHOD_NAME(self):
    with Analyser_Osmosis_Polygon_Small(self.analyser_conf, self.logger) as a:
        a.analyser()
    self.root_err = self.load_errors()
    self.check_err(cl="1", elems=[("way", "100")])
    self.check_err(cl="3", elems=[("relation", "1000")])
    self.check_err(cl="3", elems=[("relation", "1001")])
    self.check_num_err(3)