unittest: How to fail if environment does not allow execution?
kai.grossjohann at verizonbusiness.com
Thu May 11 13:28:59 CEST 2006
Roy Smith wrote:
> Kai Grossjohann <kai.grossjohann at verizonbusiness.com> wrote:
>> I wrote a test case that depends on a certain file existing in the
> In theory, unit tests should not depend on any external factors, but
> we all know the difference between theory and practice, right?
:-) I am trying to figure out whether a message is logged by syslog.
Not sure how I would do that except require the user to configure syslog
to log foo messages to the /var/log/foo file and to then check that
the message is written.
>> So, I guess I should test that the file exists in the
>> setUp method. But what if it doesn't exist? How do I fail in that case?
> def setUp (self):
> open ("myEssentialTestFile")
> except IOError:
> self.fail ("Hey, dummy, myEssentialTestFile is missing!")
Thank you, sir. I didn't realize that I can fail like that from the
setUp method, as well. Works like a charm.
Why did you use the open/IOError combination, instead of
os.stat/OSError? I am using the latter. But I don't know what I'm doing...
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