Source code ¶
To get set up to hack on borgmatic, first clone master via HTTPS or SSH:
git clone https://projects.torsion.org/witten/borgmatic.git
git clone ssh://email@example.com:3022/witten/borgmatic.git
Then, install borgmatic "editable" so that you can run borgmatic commands while you're hacking on them to make sure your changes work.
pip3 install --editable --user .
Note that this will typically install the borgmatic commands into
~/.local/bin, which may or may not be on your PATH. There are other ways to
install borgmatic editable as well, for instance into the system Python
install (so without
--user, as root), or even into a
virtualenv. How or where you install
borgmatic is up to you, but generally an editable install makes development
and testing easier.
Automated tests ¶
Assuming you've cloned the borgmatic source code as described above, and
you're in the
borgmatic/ working copy, install tox, which is used for
setting up testing environments:
sudo pip3 install tox
Finally, to actually run tests, run:
Code formatting ¶
If when running tests, you get an error from the Black code formatter about files that would be reformatted, you can ask Black to format them for you via the following:
tox -e black
End-to-end tests ¶
borgmatic additionally includes some end-to-end tests that integration test with Borg for a few representative scenarios. These tests don't run by default because they're relatively slow and depend on Borg. If you would like to run them:
tox -e end-to-end
Code style ¶
Start with PEP 8. But then, apply the following deviations from it:
- For strings, prefer single quotes over double quotes.
- Limit all lines to a maximum of 100 characters.
- Use trailing commas within multiline values or argument lists.
- For multiline constructs, put opening and closing delimeters on lines separate from their contents.
- Within multiline constructs, use standard four-space indentation. Don't align indentation with an opening delimeter.
borgmatic code uses the Black code formatter and Flake8 code checker, so certain code style requirements will be enforced when running automated tests. See the Black and Flake8 documentation for more information.