Welcome to the contribution guide for Yasumi. Contributions are encouraged and welcome, and are accepted via pull requests on Github. When contributing to Yasumi, there are a few guidelines to keep in mind.

Which Branch?

  • Please submit all pull requests for new features to the 'develop' branch.
  • Please submit pull requests for bug fixes and typos to the earliest branch the issue can be found in.


  • PSR-2 Coding Standard Please use the following command after you have completed your work:

    $ composer format

    This will check/correct all the code for the PSR-2 Coding Standard using the wonderful php-cs-fixer.

  • Add unit tests! - Your Pull Request won't be accepted if it does not have tests:

    1. Ensure your new Holiday Provider contains all the necessary unit tests.
    2. Next to the file {REGIONNAME}BaseTestCase.php, a file called {REGIONNAME}Test.php needs to be present. This file needs to include region/country level tests and requires assertion of all expected holidays.
    3. All the unit tests and the implementation Holiday Provider require to have the correct locale, timezone and region/country name.
    4. As almost all the tests use automatic iterations, so make sure the year for which the test is executed is a valid year. Some holidays only are established from a certain year and having the test year number lower than the minimum establishment year (amongst all holidays) can result in false errors.
  • Ensure that the current tests pass, and if you've added something new, add the tests where relevant.

  • Document any change - Make sure the and any other relevant documentation reflect the changes.

  • One pull request per feature - If you want to contribute more than one thing, send multiple pull requests.

  • Send coherent history - Make sure each individual commit in your pull request is meaningful. If you had to make multiple intermediate commits while developing, please squash them before submitting.

  • You may also need to rebase to avoid merge conflicts.

  • Remember that Yasumi follows SemVer. If you are changing the behaviour, or the public api, you may need to update the docs.

Last updated 06/22/2020