[英]How do I correctly import packages with py.test?
I have the following layout: 我有以下布局:
/spamalot
/spam
__init__.py
spam.py
/spam_on_eggs
__init__.py
spam_on_eggs.py
/tests
test_spam.py
Spam just so happens to be a flask application. 垃圾邮件恰好是一个烧瓶应用程序。
Within spam.py
I have 在
spam.py
我有
import spam_on_eggs.spam_on_eggs as eggs
# Other Flask setup & application code here.
And this works fine - from the spamalot
directory I'm able to run python spam/spam.py
这很好 - 从
spamalot
目录我可以运行python spam/spam.py
However, when I start to throw tests into the mix, it's not as awesome. 但是,当我开始将测试投入混音时,它并不那么棒。
In my test_spam.py
file I have: 在我的
test_spam.py
文件中,我有:
import spam.spam
test_client = spam.spam.app.test_client()
def test_it_fails():
assert False
However, rather than failing where I would expect, it fails on the import line: 但是,它不是在我预期的地方失败,而是在导入行上失败:
/spamalot/ $ py.test
# some output
E ImportError
I can fix this by putting __init__.py
in my /tests
folder, but then I get a different ImportError: 我可以通过在我的
/tests
文件夹中放置__init__.py
来解决这个问题,但后来我得到了一个不同的ImportError:
spam/spam.py:1: in <module>
> import spam_on_eggs.spam_on_eggs as eggs
E ImportError: No module named 'spam_on_eggs'
I can solve that one by changing the line to: 我可以解决一个通过改变线路:
from spam.spam_on_eggs import spam_on_eggs
Which allows me to test but then I break my ability to run $ python spam/spam.py
- because I get 这允许我测试, 但后来我打破了运行
$ python spam/spam.py
- 因为我得到了
ImportError: no module named 'spam'
Obviously I have a gap in my understanding of how module imports work and how py.test works with this system. 显然,我对模块导入如何工作以及py.test如何与该系统一起工作的理解存在差距。
What am I missing? 我错过了什么?
Is it even possible to have the layout I've described - and be able to run both py.test and my server from the spamalot directory? 是否有可能拥有我所描述的布局 - 并且能够从spamalot目录运行py.test和我的服务器?
py.test will always use the shortest directory path with an __init__.py
in it. py.test将始终使用带有
__init__.py
的最短目录路径。
Put a __init__.py
into spamalot and you can import spamalot.spam.spam
. 将
__init__.py
放入spamalot,您可以导入spamalot.spam.spam
。
Reference: choosing a test layout 参考: 选择测试布局
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