python - 将 pytest 夹具与 asynctest 一起使用

Question

我正在使用asynctest，我想利用 pytest 夹具。我对（但不仅是）caplog夹具感兴趣。

在 asynctest 测试类中，我可以使用with self.assertLogs():，但是当我的日志不在块内生成时，这还不够。

import asyncio
import logging
import asynctest


async def worker():
    logging.error(":(")


class TestClass(asynctest.TestCase):
    """Testing class. """

    async def setUp(self):
        self.worker_task = asyncio.ensure_future(worker())

    async def tearDown(self):
        try:
            self.worker_task.cancel()
        except asyncio.CancelledError:
            pass

    async def test_get_error_log(self):
        """ Simple test that assert logs emitted. """
        with self.assertLogs(level="ERROR") as cm:
            await asyncio.sleep(1)

上面的测试如果失败但如果我有：

---------- Captured log call -----------
ERROR    root:tmp.py:7 :(

标签： pythontestingpython-asyncio

Answer 1

In fact asynctest is build on top of unittest and has nothing in common with the pytest testing framework.

So my own response is: for pytest fixtures, then use pytest instead of asynctest.

For the logging issue, it can be solved by getting and mocking the logging function.

    async def test_get_error_log(self):
        """ Simple test that assert logs emitted. """
        logging.error = asynctest.Mock()
        await asyncio.sleep(1)
        logging.error.assert_called_once_with(":(")