Book Image

Real-World Next.js

By : Michele Riva
Book Image

Real-World Next.js

By: Michele Riva

Overview of this book

Next.js is a scalable and high-performance React.js framework for modern web development and provides a large set of features, such as hybrid rendering, route prefetching, automatic image optimization, and internationalization, out of the box. If you are looking to create a blog, an e-commerce website, or a simple website, this book will show you how you can use the multipurpose Next.js framework to create an impressive user experience. Starting with the basics of Next.js, the book demonstrates how the framework can help you reach your development goals. You'll realize how versatile Next.js is as you build real-world applications with step-by-step explanations. This Next.js book will guide you in choosing the right rendering methodology for your website, securing it, and deploying it to different providers, all while focusing on performance and developer happiness. By the end of the book, you'll be able to design, build, and deploy modern architectures using Next.js with any headless CMS or data source.
Table of Contents (19 chapters)
Part 1: Introduction to Next.js
Part 2: Hands-On Next.js
Part 3: Next.js by Example

Chapter 9: Testing Next.js

Testing is an essential part of the whole development workflow. It gives you more assurance that you're not introducing bugs into your code, as well as that you're not breaking any existing features.

Testing Next.js specifically is not different from testing any other React app or Express.js, Fastify, or Koa application. In fact, we can divide the testing phases into three different stages:

  • Unit testing
  • End-to-end testing
  • Integration testing

We will look at those concepts in detail in this chapter's sections.

If you already have previous experience in writing a React application, you're likely to re-utilize your knowledge for testing a Next.js-based website.

In this chapter, we will look in detail at the following:

  • An introduction to testing and testing frameworks
  • Setting up a testing environment
  • How to use some of the most popular test runners, frameworks, and utility libraries