In this Javascript testing video by Traversy Media, you will get to learn the basics of unit testing in Javascript using Jest testing library. This is for developers who are fairly new to testing and jest framework. You will learn to setup Jest, learn to work with different matchers as well as test async code. Finally you will also learn to run functions before and after different tests.
This is one of a good crash course on testing Javascript code using Jest, do check it out because time spent writing tests will save you lot’s of time in developing large applications.