shinytest2

shinytest2 provides automated testing for Shiny applications using a headless Chrome browser. It integrates with the testthat framework to help developers catch regressions when adding features, fixing bugs, or upgrading dependencies.

The package uses chromote to render applications in headless Chrome, enabling live preview, modern JavaScript/CSS support, and better debugging tools. You can record user interactions as test code and extend them to verify specific application behaviors, making testing more consistent and scalable than manual approaches.