On End-to-End Tests During Redesign

Almost a year ago, I wrote On How to Handle a Redesign. During that time, we did a lot of groundwork, including a proprietary design system (that’s a topic for a separate post) and applied it to a few “pilot” features – new ones that were already planned with the new styles in mind. Today, with a few business-critical views being worked on, we started working on the automated test setup for the transition period. The goal is simple: have a test suite for both designs simultaneously. I’ll explain the secondary challenges priorities later. Even though our end-to-end test setup is rather common – a Playwright suite orchestrated with GitHub Actions – the idea is applicable to other test runners and environments.