tl;dr:
I'm setting up CI for a project of mine, hosted on github, using tox
and travis-ci
. At the end of the build, I run converalls
to push the coverage reports to coveralls.io
. I would like to make this command 'conditional' - for execution only when the tests are run on travis; not when they are run on my local machine. Is there a way to make this happen?
The details:
The package I'm trying to test is a python package. I'm using / planning to use the following 'infrastructure' to set up the tests :
py.test
variety.tox
. This lets me run the tests locally, which is rather important to me. I don't want to have to push to github every time I need a test run. I also use numpy
and matplotlib
in my package, so running an inane number of test cycles on travis-ci
seems overly wasteful to me. As such, ditching tox
and simply using .travis.yml
alone is not an option.travis-ci
The relevant test scripts look something like this :
.travis.yml
language: python
python: 2.7
env:
- TOX_ENV=py27
install:
- pip install tox
script:
- tox -e $TOX_ENV
tox.ini
[tox]
envlist = py27
[testenv]
passenv = TRAVIS TRAVIS_JOB_ID TRAVIS_BRANCH
deps =
pytest
coverage
pytest-cov
coveralls
commands =
py.test --cov={envsitepackagesdir}/mypackage --cov-report=term --basetemp={envtmpdir}
coveralls
This file lets me run the tests locally. However, due to the final coveralls
call, the test fails in principle, with :
py27 runtests: commands[1] | coveralls
You have to provide either repo_token in .coveralls.yml, or launch via Travis
ERROR: InvocationError: ...coveralls'
This is an expected error. The passenv
bit sends along the necessary information from travis
to be able to write to coveralls
, and without travis there to provide this information, the command should fail. I don't want this to push the results to coveralls.io, either. I'd like to have coveralls
run only if the test is occuring on travis-ci
. Is there any way in which I can have this command run conditionally, or set up a build configuration which achieves the same effect?
I've already tried moving the coveralls portion into .travis.yml
, but when that is executed coveralls
seems to be unable to locate the appropriate .coverage
file to send over. I made various attempts in this direction, none of which resulted in a successful submission to coveralls.io
except the combination listed above. The following was what I would have hoped would work, given that when I run tox
locally I do end up with a .coverage
file where I'd expect it - in the root folder of my source tree.
No submission to coveralls.io
language: python
python: 2.7
env:
- TOX_ENV=py27
install:
- pip install tox
- pip install python-coveralls
script:
- tox -e $TOX_ENV
after_success:
- coveralls
An alternative solution would be to prefix the coveralls
command with a dash (-
) to tell tox
to ignore its exit code as explained in the documentation. This way even failures from coveralls
will be ignored and tox
will consider the test execution as successful when executed locally.
Using the example configuration above, it would be as follows:
[tox]
envlist = py27
[testenv]
passenv = TRAVIS TRAVIS_JOB_ID TRAVIS_BRANCH
deps =
pytest
coverage
pytest-cov
coveralls
commands =
py.test --cov={envsitepackagesdir}/mypackage --cov-report=term --basetemp={envtmpdir}
- coveralls
I have a similar setup with Travis, tox and coveralls. My idea was to only execute coveralls
if the TRAVIS
environment variable is set. However, it seems this is not so easy to do as tox has trouble parsing commands with quotes and ampersands. Additionally, this confused Travis me a lot.
Eventually I wrote a simple python script run_coveralls.py
:
#!/bin/env/python
import os
from subprocess import call
if __name__ == '__main__':
if 'TRAVIS' in os.environ:
rc = call('coveralls')
raise SystemExit(rc)
In tox.ini
, replace your coveralls
command with python {toxinidir}/run_coveralls.py
.
I am using a environmental variable to run additional commands.
tox.ini
commands =
coverage run runtests.py
{env:POST_COMMAND:python --version}
.travis.yml
language: python
python:
- "3.6"
install: pip install tox-travis
script: tox
env:
- POST_COMMAND=codecov -e TOX_ENV
Now in my local setup, it print the python version. When run from Travis it runs codecov.
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