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Contributing

Contributions are welcome, and they are greatly appreciated! Every little bit helps, and credit will always be given.

You can contribute in many ways:

Types of Contributions

Report Bugs

Report bugs at https://github.com/HDI-Project/ATM/issues.

If you are reporting a bug, please include:

  • Your operating system name and version.
  • Any details about your local setup that might be helpful in troubleshooting.
  • Detailed steps to reproduce the bug.

Fix Bugs

Look through the GitHub issues for bugs. Anything tagged with "bug" and "help wanted" is open to whoever wants to implement it.

Implement Features

Look through the GitHub issues for features. Anything tagged with "enhancement" and "help wanted" is open to whoever wants to implement it.

Write Documentation

ATM could always use more documentation, whether as part of the official ATM docs, in docstrings, or even on the web in blog posts, articles, and such.

Submit Feedback

The best way to send feedback is to file an issue at https://github.com/HDI-Project/ATM/issues.

If you are proposing a feature:

  • Explain in detail how it would work.
  • Keep the scope as narrow as possible, to make it easier to implement.
  • Remember that this is a volunteer-driven project, and that contributions are welcome :)

Get Started!

Ready to contribute? Here's how to set up ATM for local development.

  1. Fork the ATM repo on GitHub.

  2. Clone your fork locally:

    $ git clone git@github.com:your_name_here/ATM.git

  3. Install your local copy into a virtualenv. Assuming you have virtualenvwrapper installed, this is how you set up your fork for local development:

    $ mkvirtualenv ATM
$ cd ATM/
$ make install-develop

  4. Create a branch for local development:

    $ git checkout -b name-of-your-bugfix-or-feature

    Now you can make your changes locally.

  5. While hacking your changes, make sure to cover all your developments with the required unit tests, and that none of the old tests fail as a consequence of your changes. For this, make sure to run the tests suite and check the code coverage:

    $ make test       # Run the tests
$ make coverage   # Get the coverage report

  6. When you're done making changes, check that your changes pass flake8 and the tests, including testing other Python versions with tox:

    $ make lint       # Check code styling
$ make test-all   # Execute tests on all python versions

  7. Make also sure to include the necessary documentation in the code as docstrings following the google docstring style. If you want to view how your documentation will look like when it is published, you can generate and view the docs with this command:

    $ make viewdocs

  8. Commit your changes and push your branch to GitHub:

    $ git add .
$ git commit -m "Your detailed description of your changes."
$ git push origin name-of-your-bugfix-or-feature

  9. Submit a pull request through the GitHub website.

Pull Request Guidelines

Before you submit a pull request, check that it meets these guidelines:

  1. It resolves an open GitHub Issue and contains its reference in the title or the comment. If there is no associated issue, feel free to create one.
  2. Whenever possible, it resolves only one issue. If your PR resolves more than one issue, try to split it in more than one pull request.
  3. The pull request should include unit tests that cover all the changed code
  4. If the pull request adds functionality, the docs should be updated. Put your new functionality into a function with a docstring, and add the feature to the list in README.rst.
  5. The pull request should work for Python2.7, 3.4, 3.5 and 3.6. Check https://travis-ci.org/HDI-Project/ATM/pull_requests and make sure that all the checks pass.

Unit Testing Guidelines

All the Unit Tests should comply with the following requirements:

  1. Unit Tests should be based only in unittest and pytest modules.
  2. The tests that cover a module called atm/path/to/a_module.py should be implemented in a separated module called tests/atm/path/to/test_a_module.py. Note that the module name has the test_ prefix and is located in a path similar to the one of the tested module, just inside te tests folder.
  3. Each method of the tested module should have at least one associated test method, and each test method should cover only one use case or scenario.
  4. Test case methods should start with the test_ prefix and have descriptive names that indicate which scenario they cover. Names such as test_some_methed_input_none, test_some_method_value_error or test_some_method_timeout are right, but names like test_some_method_1, some_method or test_error are not.
  5. Each test should validate only what the code of the method being tested does, and not cover the behavior of any third party package or tool being used, which is assumed to work properly as far as it is being passed the right values.
  6. Any third party tool that may have any kind of random behavior, such as some Machine Learning models, databases or Web APIs, will be mocked using the mock library, and the only thing that will be tested is that our code passes the right values to them.
  7. Unit tests should not use anything from outside the test and the code being tested. This includes not reading or writting to any filesystem or database, which will be properly mocked.

Tips

To run a subset of tests:

$ pytest tests.test_atm

Release Workflow

The process of releasing a new version involves several steps combining both git and bumpversion which, briefly:

  1. Merge what is in master branch into stable branch.
  2. Update the version in setup.cfg, atm/__init__.py and HISTORY.md files.
  3. Create a new git tag pointing at the corresponding commit in stable branch.
  4. Merge the new commit from stable into master.
  5. Update the version in setup.cfg and atm/__init__.py to open the next development iteration.

Note

Before starting the process, make sure that HISTORY.md has been updated with a new entry that explains the changes that will be included in the new version. Normally this is just a list of the Pull Requests that have been merged to master since the last release.

Once this is done, run of the following commands:

  1. If you are releasing a patch version:

    make release

  2. If you are releasing a minor version:

    make release-minor

  3. If you are releasing a major version:

    make release-major