Consider adding functional tests to this project

[danielbachhuber]

Functional tests are an integral ingredient of highly-quality, maintainable commands. WP-CLI tries to make it as easy as possible to add functional tests to your package with its wp scaffold package-tests command:

https://github.com/wp-cli/scaffold-package-command#wp-scaffold-package-tests

I'd encourage you to consider adding functional tests to your package :) By starting your functional tests early on, it also makes it much easier to maintain your project over time.