react-testing-library

I'm working as one of the engineering leads in RunaHR. As our platform is a Saas, we thought It'd be good to have an API (We chose Ruby and Rails for this) and a SPA (built with React and Redux ) connected. We started the SPA with Create React App since It's pretty easy to start.

We use Jest as the testing framework and react-testing-library to test React components. In Rails we make tests using RSpec.

Our main database is PostgreSQL, but we also use MongoDB to store some type of data. We started to use Redis  for cache and other time sensitive operations.

We have a couple of extra projects: One is an Employee app built with React Native and the other is an internal back office dashboard built with Next.js for the client and Python in the backend side.

Since we have different frontend apps we have found useful to have Bit to document visual components and utils in JavaScript.

Hi, I am starting out to test an application that is currently being developed - FE: React. BE: Node JS. I want the framework to be able to test all UI scenarios (from simple to complex) and also have the capability to test APIs. I also need to run tests across all OSs and Browsers (Windows, Mac, Android, iOS). I have also looked into react-testing-library and @TestProject.io. Any advice you can give as to which framework would be best and why would be so much appreciated! Thank you!!