Silfheed wrote in news:c73b304b-f601-4bb5-89c1-3ee667eeb7d9
@l37g2000vba.googlegroups.com in comp.lang.python:
> So I'm in the current testing situation:
>
> sender.py:
> -------------
> def sendEmails():
> return "I send emails"
>
> alerter.py:
> -------------
> from sender import *
> def DoStuffAndSendEmails():
> doStuff()
> sendEmails()
>
> I'm trying to write a test fn that will test DoStuffAndSendEmails()
> (as well as it's kin) without actually sending any emails out. I
> could go through alter alerter so that it does `import sender` and
> then find and replace fn() with sender.fn() so I can just create a
> mock fn fakeSendEmails() and and do something like sender.sendEmails =
> fakeSendEmails, but I'd rather not.
>
> Anyone know how to test alerter.py with out altering the file?
Yes you alter the module *after* you have imported it.
In your test script do:
def mock_sendEmails():
pass # or some test code maybe
# setup ...
import alerter
# now patch the module
alerter.sendEmails = mock_sendEmails
# run the test ...
DoStuffAndSendEmails()
Because python is dynamic alerter.DoStuffAndSendEmails will call
the sendEmails in the alerter module that has been replaced with
mock_sendEmails from the test script.
Rob.
--
http://www.victim-prime.dsl.pipex.com/
--
http://mail.python.org/mailman/listinfo/python-list
