CMS - Automation of Unified building and testing

At any moment in time, the ​CMS1​ experiment is running hundreds of thousands of jobs on its distributed computing system, part of the ​World Wide Computing Grid2​​. Billions of collision events are simulated and reconstructed per week, lumped together in datasets for final analysis, published on commonly accessed catalogues. This task requires significant human effort. A possible way to increase the sustainability of computing operations is to develop and improve tools which allow automated tasks. Unified3​ is part of such a category of software tools. It is a set of ​python components that contributes to the smooth automation of several operations relative to the ​CMS1​ central production. For example, the tool makes sure for the whole workflow management and needs significant integrations for various utilities. Testing ​Unified3​ is a fundamental task, and currently, the job requires manual work. This project aims to implement, via ​Github Actions4​​, automation of the ​Unified3​ software integration process, including continuous integration and testing. The goal is to streamline the development, making it easier to integrate fixes and new features for developers and to obtain a fresh build for users.