README.md

Testing with Jest

Code along template: https://github.com/thoughtworks-jumpstart/jest-starter-template

Testing libraries

Here are the commonly used JavaScript test runner libraries: jest, jasmine, mocha. They are very similar in their functionality and API design, so if you master one, chances are - learning the others won't be difficult.

In this chapter, we will learn jest because:

• jest has feature-parity with other test runners (e.g. mocha, jasmine)
• jest is fast
• minimal configuration is required
• the snapshot testing feature (which we will use later when we learn React)

Resources

• An overview of javascript testing in 2018

Reference

• Jest cheat sheet
• Jest Expect API Reference

Assignment

https://github.com/davified/tdd-with-jest