def METHOD_NAME(self):
    query = """MATCH ()-[e]->() RETURN e.v ORDER BY e.v
               UNION
               MATCH ()-[e]->() RETURN e.v ORDER BY e.v
               UNION
               MATCH ()-[e]->() RETURN e.v ORDER BY e.v"""
    result = redis_graph.query(query)
    expected_result = [["v1_v2"],
                       ["v2_v3"]]
    self.env.assertEquals(result.result_set, expected_result)