Re: testing

On Fri, Jul 5, 2013 at 6:38 AM, Ramiro Morales <cramm0@gmail.com> wrote:
> On Thu, Jul 4, 2013 at 8:42 PM, Larry Martell <larry.martell@gmail.com> wrote:
>>
>> I'm just getting involved with setting up testing using the django
>> testing facilities, and I have a couple of questions.
>>
>> If I do this from the django shell:
>>
>> $ python manage.py shell
>> Python 2.7.2 (default, Oct 11 2012, 20:14:37)
>> [GCC 4.2.1 Compatible Apple Clang 4.0 (tags/Apple/clang-418.0.60)] on
>> darwin
>> Type "help", "copyright", "credits" or "license" for more information.
>> (InteractiveConsole)
>> >>> from django.test.utils import setup_test_environment
>> >>> setup_test_environment()
>> >>>
>>
>> Should I expect to see that the test db was created? Because I do not
>> see it. (The docs say "This convenience method sets up the test
>> database").
>
> It seems you are using Django <= 1.4. the docs were wrong n these versions.
> setup_test_environment() doesn't actually creates the test DB.
>
> That section of the docs were [1]updated in >= 1.5 to point to the
> .setup_databases() method the relevant TestRunner class which is
> the one in charge of the DB creation.
>
>> But then I read:
>>
>> create_test_db: Creates a new test database and runs syncdb against
>> it. So then I thought maybe I have to call that. But I got:
>>
>> >>> create_test_db()
>> Traceback (most recent call last):
>> File "<console>", line 1, in <module>
>> NameError: name 'create_test_db' is not defined
>>
>
> That create_test_db() is a low-level DB backend method that provides
> the low-level support
> to this functionality. Its easy to miss but thee is a
>
> "The creation module of the database backend (connection.creation)
> also provides some utilities that can be useful during testing."
>
> paragraph above its description.

Thanks much for the clarification.


>> Concerning fixture, I read in the docs where it says you can set up
>> fixture files for initialing the test db. What will prevent those test
>> fixtures from getting loaded when I do a syncdb of my 'real' database?
>
> Documentation is clear in this case:
>
> - The only DB fixtures leaded automatically on syncdb are the ones
> named 'initial_data'

Ah, yes. Thanks again!

> - You should explicitly specify the names of the DB fixtures you want
> loaded for a given test case.
>
> So there are two safety nets there. You need to break them explicitly
> to get to that potentially disastrous scenario.

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