[Scons-dev] Unit testing with mock?

[Paweł Tomulik]

This is the module I'm currently working on:

https://github.com/ptomulik/scons-arguments

for the moment 'devel' branch is more recent:

https://github.com/ptomulik/scons-arguments/tree/devel

Mocks are used in unit tests:

https://github.com/ptomulik/scons-arguments/blob/master/unit_tests/SConsArgumentsTests.py

It's hard to tell what's the particular purpose of using mocks for a
particular project. It's rather a choice of testing philosophy. Mocks
always play same role: to isolate the behaviour of the object (or
method) being tested on other objects (or methods). That way less tests
get affected when a particular object changes its behaviour.


W dniu 23.10.2015 o 16:19, Bill Deegan pisze:
> Pawel,
> 
> If the plan was to migrate SCons to 3.x and drop support for 2.7, then
> maybe using mocks would be ok now.
> But the plan is to support both for some time once we get SCons working
> with 3.x.
> 
> What are you using mocks for now? Can you point to a repo?
> Note that thus far, the mocks module has not been used, so chances are
> it can be done without additional modules (though perhaps with more code).
> 
> -Bill
> 
> On Fri, Oct 23, 2015 at 1:56 AM, Paweł Tomulik <ptomulik at meil.pw.edu.pl
> <mailto:ptomulik at meil.pw.edu.pl>> wrote:
> 
>     So, what should I replace my existing mocks with? Do you know any
>     technique?
> 
>     These mocks would only be required for unit-testing scons package, so
>     this doesn't affect plain users (only developers and scons package
>     maintainers would be affected). And starting from 3.3, the mock module
>     is part of python standard.
> 
> 
> 
>     W dniu 23.10.2015 o 09:21, Alexandre Feblot pisze:
>     > Hi,
>     > Please, please, please,
>     > Don't!
>     > Don't force people to install additional modules.
>     > One of Python benefits is how rich its standard distribution is,
>     compared to perl for example, allowing to distribute code that you
>     know will work everywhere without additional requirement.
>     > Please don't break that.
>     >
>     > Alexandre
>     >
>     >> Le 22 oct. 2015 à 23:58, Pawel Tomulik <ptomulik at meil.pw.edu.pl
>     <mailto:ptomulik at meil.pw.edu.pl>> a écrit :
>     >>
>     >> Hi,
>     >>
>     >> If I would like to contribute a module to scons, would it be
>     acceptable
>     >> to use mocks (https://pypi.python.org/pypi/mock) in unit tests? From
>     >> what I see, none of the existsing unit tests in SCons use mocks,
>     perhaps
>     >> for a reason? Is it forbidden? Is there an alternative without
>     using the
>     >> module?
>     >>
>     >> The mock module is not included in the basic python distribution,
>     it has
>     >> to be installed, for example with pip (it's a backport of
>     unittest.mock
>     >> available in python >=3.3).
>     >>
>     >>
>     >> Best regards!
>     >>
>     >> --
>     >> Paweł Tomulik
>     >>
>     >> _______________________________________________
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> 
> 
>     --
>     Paweł Tomulik, tel. (22) 234 7925
>     Instytut Techniki Lotniczej i Mechaniki Stosowanej
>     Politechnika Warszawska
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-- 
Pawel Tomulik