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[英]How can I set session details in conftest.py for yield along with fixture in pytest?
[英]how to set config before import in pytest conftest.py?
我有myprj
項目,文件如下。
$ tree myprj/
myprj/
├── prj
│ ├── __init__.py
│ ├── config.py
│ ├── my_logger.py
│ ├── my_module.py
│ └── tests
│ ├── __init__.py
│ ├── conftest.py
│ └── unit
│ ├── __init__.py
│ └── test_my_module.py
├── setup.py
└── tox.ini
配置文件
LOG_FILE='/path/exists/on/production/prj.log'
my_logger.py
from prj import config
import logging
class MyLogger():
def __init__(self):
self.setup_logger()
def setup_logger(self):
logFilename = config.LOG_FILE
file_hdlr = logging.FileHandler(logFilename)
my_module.py
from prj import my_logger
myLogger = my_logger.MyLogger()
def my_method():
return 1
test_my_module.py
from prj import my_module
def test_my_method():
assert 1 == my_module.my_method()
設置文件
from setuptools import setup
setup(name="Tox Testing")
配置文件
[tox]
envlist = py35
[testenv]
deps=pytest
commands=py.test
當我運行tox
它失敗了,日志文件的path not exists
。
GLOB sdist-make: /private/tmp/myprj/setup.py
py35 inst-nodeps: /private/tmp/myprj/.tox/dist/Tox Testing-0.0.0.zip
py35 installed: attrs==17.4.0,pluggy==0.6.0,py==1.5.2,pytest==3.3.2,six==1.11.0,Tox-Testing==0.0.0
py35 runtests: PYTHONHASHSEED='2231398989'
py35 runtests: commands[0] | py.test
========================================================================================================= test session starts =========================================================================================================
platform darwin -- Python 3.5.2, pytest-3.3.2, py-1.5.2, pluggy-0.6.0
rootdir: /private/tmp/myprj, inifile:
collected 0 items / 1 errors
=============================================================================================================== ERRORS ================================================================================================================
__________________________________________________________________________________________ ERROR collecting prj/tests/unit/test_my_module.py __________________________________________________________________________________________
prj/tests/unit/test_my_module.py:1: in <module>
from prj import my_module
prj/my_module.py:3: in <module>
myLogger = my_logger.MyLogger()
prj/my_logger.py:6: in __init__
self.setup_logger()
prj/my_logger.py:11: in setup_logger
file_hdlr = logging.FileHandler(logFilename)
/Users/nile2691/.pyenv/versions/3.5.2/lib/python3.5/logging/__init__.py:1008: in __init__
StreamHandler.__init__(self, self._open())
/Users/nile2691/.pyenv/versions/3.5.2/lib/python3.5/logging/__init__.py:1037: in _open
return open(self.baseFilename, self.mode, encoding=self.encoding)
E FileNotFoundError: [Errno 2] No such file or directory: '/path/exists/on/production/prj.log'
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 errors during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
======================================================================================================= 1 error in 0.36 seconds =======================================================================================================
ERROR: InvocationError: '/private/tmp/myprj/.tox/py35/bin/py.test'
_______________________________________________________________________________________________________________ summary _______________________________________________________________________________________________________________
ERROR: py35: commands failed
我明白了,我的本地系統中不存在日志文件路徑,並且它給出了錯誤。
我嘗試使用conftest.py
夾具在config.py
設置LOG_FILE
變量。
conftest.py
import pytest
from prj import config
@pytest.fixture(scope="session", autouse=True)
def set_config():
config.LOG_FILE = '/tmp/prj.log'
但它仍然返回相同的錯誤。 如果我能夠在開始執行測試之前調用某些內容,例如py.test
的第一個執行步驟,那么我可以設置LOG_FILE
並且它不會引發錯誤。
在my_module.py
的全局范圍內,您創建一個實例my_logger.MyLogger()
並在MyLogger.__init__
中設置日志處理程序。
您的問題是在導入時設置日志處理程序的反模式。 不要那樣做。
對於應用程序,日志處理程序應該在運行時配置(通過main()
或其他方式完成)。 對於庫,根本不應該配置日志處理程序(除了可能添加NullHandler
) - 由您的庫用戶決定他們希望如何配置處理程序。
請注意,pytest 不需要已經配置日志處理程序來測試記錄的記錄並對日志事件進行斷言 - caplog
夾具將插入自己的處理程序以捕獲日志記錄事件,因此它甚至可以與未配置的日志系統。
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