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diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md index 2acc6b119..fba4bb40a 100644 --- a/CONTRIBUTING.md +++ b/CONTRIBUTING.md @@ -12,25 +12,76 @@ Before submitting code changes, get familiarized with these documents: - [Style Guide](docs/style_guide.adoc) - [Repository Structure](docs/repo_structure.md) -## Running tests +Please consider opening an issue or discussing on an existing one if you are +planning to work on something larger, to make sure your time investment is +something that can be merged to the repository. -We use [tox](http://readthedocs.org/docs/tox/) to manage virtualenvs and run -tests. Alternatively, tests can be run using -[detox](https://pypi.python.org/pypi/detox/) which allows for running tests in -parallel. +## Submitting contributions + +1. [Fork](https://help.github.com/articles/fork-a-repo/) this repository and + [create a work branch in your fork](https://help.github.com/articles/github-flow/). +2. Go through the documents mentioned in the [introduction](#introduction). +3. Make changes and commit. You may want to review your changes and + [run tests](#running-tests-and-other-verification-tasks) before pushing your + branch. +4. [Open a Pull Request](https://help.github.com/articles/creating-a-pull-request/). + Give it a meaningful title explaining the changes you are proposing, and + then add further details in the description. + +One of the repository maintainers will then review the PR and trigger tests, and +possibly start a discussion that goes on until the PR is ready to be merged. + +If you get no timely feedback from a project contributor / maintainer, sorry for +the delay. You can help us speed up triaging, reviewing and eventually merging +contributions by requesting a review or tagging in a comment +[someone who has worked on the files](https://help.github.com/articles/tracing-changes-in-a-file/) +you're proposing changes to. + +--- + +**Note**: during the review process, you may add new commits to address review +comments or change existing commits. However, before getting your PR merged, +please [squash commits](https://help.github.com/articles/about-git-rebase/) to a +minimum set of meaningful commits. + +If you've broken your work up into a set of sequential changes and each commit +pass the tests on their own then that's fine. If you've got commits fixing typos +or other problems introduced by previous commits in the same PR, then those +should be squashed before merging. + +If you are new to Git, these links might help: + +- https://git-scm.com/book/en/v2/Git-Tools-Rewriting-History +- http://gitready.com/advanced/2009/02/10/squashing-commits-with-rebase.html + +--- + +## Running tests and other verification tasks -Note: while `detox` may be useful in development to make use of multiple cores, -it can be buggy at times and produce flakes, thus we do not use it in our CI. +We use [`tox`](http://readthedocs.org/docs/tox/) to manage virtualenvs where +tests and other verification tasks are run. We use +[`pytest`](https://docs.pytest.org/) as our test runner. +Alternatively to `tox`, one can use +[`detox`](https://pypi.python.org/pypi/detox/) for running verification tasks in +parallel. Note that while `detox` may be useful in development to make use of +multiple cores, it can be buggy at times and produce flakes, thus we do not use +it in our [CI](docs/continuous_integration.md) jobs. ``` -pip install tox detox +pip install tox +``` + +To run all tests and verification tasks: + +``` +tox ``` --- -Note: before running `tox` or `detox`, ensure that the only virtualenvs within -the repository root are the ones managed by `tox`, those in a `.tox` +**Note**: before running `tox` or `detox`, ensure that the only virtualenvs +within the repository root are the ones managed by `tox`, those in a `.tox` subdirectory. Use this command to list paths that are likely part of a virtualenv not managed @@ -47,45 +98,45 @@ potentially fail. --- -List the test environments available: - -``` -tox -l -``` - -Run all of the tests and linters with: +### Running only specific tasks -``` -tox -``` - -Run all of the tests linters in parallel (may flake): +The [tox configuration](tox.ini) describes environments based on either Python 2 +or Python 3. Each environment is associated with a command that is executed in +the context of a virtualenv, with a specific version of Python, installed +dependencies, environment variables and so on. To list the environments +available: ``` -detox +tox -l ``` -### Run only unit tests or some specific linter - -Run a particular test environment (`flake8` on Python 2.7 in this case): +To run the command of a particular environment, e.g., `flake8` on Python 2.7: ``` tox -e py27-flake8 ``` -Run a particular test environment in a clean virtualenv (`pylint` on Python 3.5 -in this case): +To run the command of a particular environment in a clean virtualenv, e.g., +`pylint` on Python 3.5: ``` tox -re py35-pylint ``` +The `-r` flag recreates existing environments, useful to force dependencies to +be reinstalled. + +## Appendix + ### Tricks +Here are some useful tips that might improve your workflow while working on this repository. + #### Activating a virtualenv managed by tox -If you want to enter a virtualenv created by tox to do additional -testing/debugging (py27-flake8 env in this case): +If you want to enter a virtualenv created by tox to do additional debugging, you +can activate it just like any other virtualenv (py27-flake8 environment in this +example): ``` source .tox/py27-flake8/bin/activate @@ -124,32 +175,7 @@ $ tox -e py27-unit -- roles/lib_openshift/src/test/unit/test_oc_project.py -k te Among other things, this can be used for instance to see the coverage levels of individual modules as we work on improving tests. -## Submitting contributions - -1. Go through the guides from the [introduction](#Introduction). -2. Fork this repository, and create a work branch in your fork. -3. Make changes and commit. You may want to review your changes and run tests - before pushing your branch. -4. Open a Pull Request. - -One of the repository maintainers will then review the PR and submit it for -testing. - -The `default` test job is publicly accessible at -https://ci.openshift.redhat.com/jenkins/job/openshift-ansible/. The other jobs -are run on a different Jenkins host that is not publicly accessible, however the -test results are posted to S3 buckets when complete. - -The test output of each job is also posted to the Pull Request as comments. - -A trend of the time taken by merge jobs is available at -https://ci.openshift.redhat.com/jenkins/job/merge_pull_request_openshift_ansible/buildTimeTrend. - ---- - -## Appendix - -### Finding unused Python code +#### Finding unused Python code If you are contributing with Python code, you can use the tool [`vulture`](https://pypi.python.org/pypi/vulture) to verify that you are not |