def METHOD_NAME(self):
    pg_db = auth.postgresDB()
    sql_query = f"SELECT * FROM tasks WHERE project_id = '{self.project_id}'"
    result = pg_db.retr_query(sql_query)
    self.assertListEqual(result, [])
    sql_query = f"SELECT * FROM groups WHERE project_id = '{self.project_id}'"
    result = pg_db.retr_query(sql_query)
    self.assertListEqual(result, [])
    sql_query = f"SELECT * FROM projects WHERE project_id = '{self.project_id}'"
    result = pg_db.retr_query(sql_query)
    self.assertListEqual(result, [])
    sql_query = (
        f"SELECT * FROM mapping_sessions WHERE project_id = '{self.project_id}'"
    )
    result = pg_db.retr_query(sql_query)
    self.assertListEqual(result, [])
    sql_query = f"""
            SELECT msr.*
            FROM mapping_sessions_results msr
            JOIN mapping_sessions ms USING (mapping_session_id)
            WHERE ms.project_id = '{self.project_id}'
        """
    result = pg_db.retr_query(sql_query)
    self.assertListEqual(result, [])