Jest is React’s best testing companion. It also brought several concepts to mainstream JavaScript testing: zero configuration, first-class mocking, and snapshots. With the rapid release of speed improvements, it’s easy to miss a new useful feature. I will present some lesser-known possibilities of recent Jest versions I’ve learned during experimenting, reading (and writing) the docs, and browsing the code.

Talk recording from React Open Source meetup https://www.meetup.com/React-Open-Source/events/244027983/