Summary

In this chapter, we looked at aspects of code quality with an emphasis on automated testing. We started with the basics of clear naming and getting familiar with the industry-wide conventions of the language. By following these conventions and writing clearly, we're able to make our code more readable and reusable.

Building from there, we looked at how linting and testing commands can be created with Node.js using a handful of popular tools, including Prettier, ESLint, Jest, Puppeteer, and Husky.

In addition to setting up tests, we talked about the categories of tests and their use cases. We went through unit tests that ensure that individual functions are working as expected, and integration tests that combine multiple functions or aspects of a program to ensure things are working together. Then, we performed end-to-end tests, which open the application's interface and interact with it as an end-user would.

Finally, we looked at how we can tie it all together...