Re: [Fab-user] unit testing

[Jeff Forcier]

For what it's worth, none of these are new concerns :( they've just
been lower priority than other things. The upcoming rearchitect in v2
should make testing/mocking/etc far easier as making that sort of
thing possible will be a focus.

Re: cd specifically, it does not call anything itself, it simply
toggles a setting which is detected by run/sudo when they build their
final command strings :)

Best,
Jeff

On Wed, Jan 30, 2013 at 5:34 AM, andrea crotti
<address@hidden> wrote:
> Anyway I'm almost satisfied, now I can record the things that would be
> run and then check things with them.
> I wonder why the "cd" is not complaining, is it actually running on
> the remote hosts behind my back?
>
> def fake_run(cmd, seen=[]):
>         seen.append(cmd)
>         return sys.stdout.write(cmd + '\n')
>
>
> def files_exists(exists=True):
>         m = Mock()
>         m.exists = lambda x: exists
>         return m
>
>
> SEEN = []
>
> @patch('fabfile.WAZOKU_REPO', new='/tmp/wazoku')
> @patch('fabfile.run', new=lambda cmd: fake_run(cmd, seen=SEEN))
> class TestNewDeploy(unittest.TestCase):
>         def setUp(self):
>                 global SEEN
>                 SEEN = []
>
>         @patch('fabfile.files', new=files_exists(False))
>         def test_first_run_works_file(self):
>                 if path.isdir(fabfile.WAZOKU_REPO):
>                         rmtree(fabfile.WAZOKU_REPO)
>
>                 fabfile.deploy_head_new_pull(branch='staging')
>                 self.assertEqual(len(SEEN), 6)
>
>         @patch('fabfile.files', new=files_exists(True))
>         def test_second_run_works(self):
>                 fabfile.deploy_head_new_pull(branch='staging')
>                 self.assertEqual(len(SEEN), 5)
>
>
> 2013/1/30 andrea crotti <address@hidden>:
>> Yes I tried that but than I need to setup some ssh keys to connect
>> automatically to localhost (unless there is a smarter way to do that).
>>
>> 2013/1/30 Jasper van den Bosch <address@hidden>:
>>> Yes, or just specify localhost as the host. We could think about making a
>>> fully mocked version of the fabric API as a python package.
>>>
>>>
>>> On 30 January 2013 14:11, andrea crotti <address@hidden> wrote:
>>>>
>>>> Well I suppose it's files.exists, and in fact adding the other mock works
>>>>
>>>> def files_exists():
>>>>
>>>>         m = Mock()
>>>>
>>>> m.exists = lambda x: True
>>>>
>>>> return m
>>>>
>>>> @patch('fabfile.files', new=files_exists())
>>>>
>>>> It would be nice to avoid mocking all the calls though..
>>>> And maybe another useful thing would be to make something that should run
>>>> on different servers run locally, I suppose I could simply do a
>>>> run -> local
>>>> translation, right?
>>>>
>>>> On 30 Jan 2013 12:58, "Jasper van den Bosch" <address@hidden> wrote:
>>>>>
>>>>> Hi andrea,
>>>>>
>>>>> I regularly unit-test fabric code. If you are mocking out run() etc, and
>>>>> using the regular python executable, not fab, to start the tests, I don't
>>>>> see why it would try to connect. Can you post more code, i.e. as a Gist?
>>>>>
>>>>> Jasper
>>>>>
>>>>> On 30 January 2013 13:30, andrea crotti <address@hidden>
>>>>> wrote:
>>>>>>
>>>>>> I'm trying to unit test my fabfile, what I would like to do is the
>>>>>> following:
>>>>>> - set some conditions
>>>>>> - get a trail of commands that would be run
>>>>>> - check if that is correct
>>>>>>
>>>>>> Now the problem is that for any command it still wants to connect, so
>>>>>> even if I mock out run, it still complains about the host missing for
>>>>>> some reason.
>>>>>>
>>>>>> And then I have to find a way to record the sequence of commands
>>>>>> instead of simply printing them out, any ideas about that?
>>>>>> By the way, I was looking for documentation about unit testing and
>>>>>> fabric but didn't find anything useful, is noone doing it?
>>>>>>
>>>>>> Test:
>>>>>> def fake_run(cmd):
>>>>>>         return sys.stdout.write(cmd)
>>>>>>
>>>>>> @patch('fabfile.env.hosts', new=['localhost'])
>>>>>> @patch('fabfile.WAZOKU_REPO', new='/tmp/wazoku')
>>>>>> @patch('fabfile.run', new=fake_run)
>>>>>> class TestNewDeploy(unittest.TestCase):
>>>>>>         def test_first_run_works_file(self):
>>>>>>
>>>>>>
>>>>>> Function to test:
>>>>>> @parallel
>>>>>> def deploy_head_new_pull(branch='master'):
>>>>>>         api_dir = "%s/company-api/api" % COMPANY_REPO
>>>>>>         ve_dir = '%s/ve' % api_dir
>>>>>>         if not files.exists(COMPANY_REPO):
>>>>>>                 run(CLONE.format(branch, COMPANY_REPO))
>>>>>>                 # create the symlink to make sure it points to the right
>>>>>> place
>>>>>>                 run('ln -sf %s/company-api $HOME/api' % COMPANY_REPO)
>>>>>>                 run('virtualenv %s' % ve_dir)
>>>>>>         else:
>>>>>>                 with cd(COMPANY_API):
>>>>>>                         run('git pull')
>>>>>>                         run('git clean -f')
>>>>>>
>>>>>>         with settings(user='company'):
>>>>>>                 with cd(COMPANY_REPO):
>>>>>>                         run('source %s/bin/activate && pip install -r
>>>>>> requirements.txt' % ve_dir)
>>>>>>                         run('cp production_settings.py settings.py')
>>>>>>
>>>>>>         restart_api()
>>>>>>
>>>>>> _______________________________________________
>>>>>> Fab-user mailing list
>>>>>> address@hidden
>>>>>> https://lists.nongnu.org/mailman/listinfo/fab-user
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Jasper van den Bosch
>>>>> ilogue.com/jasper
>>>>>
>>>>> I'd love to see your attachment, but please use OpenDocument, not a
>>>>> proprietary format like docx. It's an international standard, endorsed by
>>>>> the EU, and implemented in many office suites, such as LibreOffice, and
>>>>> commercial products from Oracle, Sun, IBM and Microsoft (from 2007).
>>>
>>>
>>>
>>>
>>> --
>>> Jasper van den Bosch
>>> ilogue.com/jasper
>>>
>>> I'd love to see your attachment, but please use OpenDocument, not a
>>> proprietary format like docx. It's an international standard, endorsed by
>>> the EU, and implemented in many office suites, such as LibreOffice, and
>>> commercial products from Oracle, Sun, IBM and Microsoft (from 2007).
>
> _______________________________________________
> Fab-user mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/fab-user



-- 
Jeff Forcier
Unix sysadmin; Python/Ruby engineer
http://bitprophet.org