Check out a free preview of the full Testing JavaScript Applications (feat. React and Redux) course:
The "Setting up Jest" Lesson is part of the full, Testing JavaScript Applications (feat. React and Redux) course featured in this preview video. Here's what you'd learn in this lesson:

Kent sets up Jest, a JavaScript testing solution developed by Facebook, and creates a simple bug for a testing demonstration. - https://facebook.github.io/jest/

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