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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
项目,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()
设置文件
from setuptools import setup
setup(name="Tox Testing")
配置文件
[tox]
envlist = py35
[testenv]
deps=pytest
commands=py.test
当我运行tox
它失败了,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,我的本地系统中不存在日志文件路径,并且它给出了错误。
我尝试使用conftest.py
夹具在config.py
设置LOG_FILE
变量。
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错误。 如果我能够在开始执行测试之前调用某些内容,例如py.test
的第一个执行步骤,那么我可以设置LOG_FILE
并且它不会引发错误。
在my_module.py
的全局范围内,您创建一个实例my_logger.MyLogger()
并在MyLogger.__init__
中设置日志处理程序。
您的问题是在导入时设置日志处理程序的反模式。 不要那样做。
对于应用程序,日志处理程序应该在运行时配置(通过main()
或其他方式完成)。 对于库,根本不应该配置日志处理程序(除了可能添加NullHandler
) - 由您的库用户决定他们希望如何配置处理程序。
请注意,pytest 不需要已经配置日志处理程序来测试记录的记录并对日志事件进行断言 - caplog
夹具将插入自己的处理程序以捕获日志记录事件,因此它甚至可以与未配置的日志系统。
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