Method get_xact_id

tests/test_pool.py:522–523

(con)

        async with self.create_pool(database='postgres',
                                    min_size=1, max_size=1) as pool:
            async def get_xact_id(con):
                return await con.fetchval('select txid_current()')

            with self.assertLoopErrorHandlerCalled('an active transaction'):
                async with pool.acquire() as con: