[TIP] Can pytest identify python code that has no test

[DZIOBEK, JOE]

Hi Ned,

I added a __init__.py in EVERY subdirectory leading to the test-less scriptB.py.
Now coverage.py reports 0% coverage for script.py – exactly what I was looking for!

In my original example I only showed the final subdirectory with the __init__.py;
I left out the intermediate subdirectories that did not have a __init__.py;
Next time I will be more precise.

Thanks for all the help - Joe

From: Ned Batchelder [mailto:nedbat at gmail.com] On Behalf Of Ned Batchelder
Sent: Friday, January 04, 2019 4:07 PM
To: DZIOBEK, JOE <jd5948 at att.com>; testing-in-python at lists.idyll.org
Subject: Re: [TIP] Can pytest identify python code that has no test


Coverage will only find files that it considers importable.  It's essential that you have __init__.py files in the subdirectories.  Those files can be empty, no one needs to update them.

Your original output showed a __init__.py file, but this latest run does not.

--Ned.
On 1/4/19 2:31 PM, DZIOBEK, JOE wrote:
Hi Ned,

Yes, my tox.ini file is as described earlier:
commands =
    coverage run -m --source=. pytest --ignore=virtualenv-15.1.0/ --ignore=.tox
    coverage report -m --omit=.tox/*

For additional debugging, I added another py file to my root folder, so now I have:

script.py
test_script.py
scriptB2.py ( which does not have an associated test script! )

Then a subfolder (actually 5 levels deep, see below)
scriptA.py
test_scriptA.py
scriptB.py ( which does not have an associated test script! )

Executing the tox command again, I now get an improved picture:
Name                                                                      Stmts   Miss  Cover   Missing
-------------------------------------------------------------------------------------------------------
sub/sub2/sub3/sub4/sub5/scriptA.py            2      0   100%
sub/sub2/sub3/sub4/sub5/test_scriptA.py       3      0   100%
script.py                                                                     4      1    75%   3
scriptB2.py                                                          142    142     0%   3-322
test_script.py                                                                3      0   100%
-------------------------------------------------------------------------------------------------------

So we found the UNTESTED scriptB2.py in root folder – exactly what we want.
It did not find the UNTESTED script.py in the deeper folder.
Any ideas? BTW, I don’t have any __init__.py files in any folder.

PS: Bruno, your idea with adding the import to the __init__.py file is good, but requires someone to update that file, probably the same person that forgot to write the test.py;

Thanks for your help,
Regards - Joe

From: testing-in-python-bounces at lists.idyll.org<mailto:testing-in-python-bounces at lists.idyll.org> [mailto:testing-in-python-bounces at lists.idyll.org] On Behalf Of Ned Batchelder
Sent: Friday, January 04, 2019 11:59 AM
To: testing-in-python at lists.idyll.org<mailto:testing-in-python at lists.idyll.org>
Subject: Re: [TIP] Can pytest identify python code that has no test


Joe, since you have specified "--source=.", coverage will search your tree for importable Python files, and report on them even if they are never imported.  So you are already doing the right thing. I'm not sure why it wouldn't show you that file.  Are you sure you are running the commands you showed?

--Ned.
On 1/4/19 11:42 AM, Bruno Oliveira wrote:
Hi Joe,
On Fri, Dec 21, 2018 at 5:06 PM DZIOBEK, JOE <jd5948 at att.com<mailto:jd5948 at att.com>> wrote:
Is there a way to have this file included in the report?

You are not seeing coverage information for scriptB.py not because it does not have an associated test file, but because it was never imported during the run (I'm assuming).

One way to have it to appear on the report is to import scriptB on your __init__.py file, this way its coverage will be tracked.

Hope this helps,
Bruno




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