[Twisted-Python] testing my application

Marcin Kasperski Marcin.Kasperski at softax.com.pl
Thu Oct 20 09:19:15 EDT 2005

Dnia czwartek, 20 października 2005 13:16, Stefano Canepa 
> Hi all,
> 	I am looking for a simple way to write test cases for my
> project. What is the right way to be as standard as possible?
> I know the application works becouse I developed a client and
> the server speaking the same protocol and used lots of print
> to have output and a sniffer to see network trafic but I
> understand this is not the right way.

Hmm, I have the similar problem. I have been using python 
unittest to test my application components but recently I 
started to write classess which return deferreds and I am not 
sure how to test them.

First I tried to use standard unittest and install callbacks 
which call self.fail or self.succeed - but it seems that the 
errors are just ignored.

Then I found on this list note about deferredResult and tried 
using it (keeping normal unittest) but seems the application 
just hangs here (for the simple reason I guess, no reactor is 

Then I found about twisted.trial.unittest. But when I replaced 
import unittest with from twisted.trial import unittest, I found 
that there is no 'main' function in this module.

What should I do? Go back to normal unittest but start some 
reactor before unittest.main() ?

Does there anywhere exist any complete ***standalone*** test 
example (run for itself instead of being run within whole 
twisted test framework)?

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