In this guide - learn the basics of testing in JavaScript with Mocha and Chai - focusing on Unit Testing and creating test suites, with practical code examples.

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The basic premise of test-driven development (TDD) is writing your tests even before you start coding. To make this whole process a lot easier, you can resort to easy-to-use and powerful testing and assertion frameworks, such as Mocha and Chai. Chai is an assertion library that provides both the BDD and TDD.

Testing Node.js Code with Mocha and Chai

Organizing Test Cases with Mocha - describe() and it()

Mocha Hooks - before(), after(), beforeEach() and afterEach()

Mocha and chai were around way before Jest I believe. They used to be my tool of choice before the whole JS ecosystem doubled down on jest.
I’ll probably stick with Jest until Node’s new built in test-runner hits the scened (should be LTS in Node@v20)

I didnt know these tools eixst. Wonder how are they different from jest and other framework. Thanks for the info

I think this is the best tutorial I’ve read in the net about Mocha &amp; Chai, good job!