TL;DR Short answer yes, blogsite
This blog incorporates many great concepts on testing tying together a lot of older articles Kent has written, a lot of them pertaining to React Testing Library (Kent created).
I recommend a lot of things that Kent writes, even just following him on Twitter is has benefits. I personally enjoy writing tests, refactoring and debugging (I love features too don't get me wrong.) Kent has insights and philosophies behind a lot of these things that I not only think are technically sound but agree with personally as well. Especially when it comes to things that have to do with testing, he has some of the best philosophies surrounding testing and Reacts Testing Library is built around these fundamental concepts.
These testing philosophies have even been adopted and encouraged by the React core team, stating in their documentation https://reactjs.org/docs/testing.html#tools
React Testing Library is a set of helpers that let you test React components without relying on their implementation details. This approach makes refactoring a breeze and also nudges you towards best practices for accessibility. Although it doesn’t provide a way to “shallowly” render a component without its children, a test runner like Jest lets you do this by mocking.