Add testing

[swmcc]

As a developer, I want to add automated testing to my codebase so that I can ensure the stability and reliability of my application. I want to write functional tests for key features to catch any regressions before they reach production. I also want to integrate these tests into my continuous integration and deployment pipeline to ensure that all changes are automatically tested and verified before they are deployed. By doing so, I can increase confidence in the quality of my code, reduce the risk of bugs and downtime, and improve the overall user experience.