Re: [Fab-user] unit testing

[andrea crotti]

So one thing which would be already great I think might be something like

env.pretend = (True, callback_function)
so if I set the pretend to true I can pass a callback function which
takes the command that
would be executed and does something with it.
Without passing it might just print what it would be done...

But anyway the manual mocking I've done so far is quite easy, so it's
not the end of the world
if there isn't something simpler to use..

2013/1/30 Jeff Forcier <address@hidden>:
> 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