Book Image

Full-Stack Web Development with GraphQL and React - Second Edition

By : Sebastian Grebe
Book Image

Full-Stack Web Development with GraphQL and React - Second Edition

By: Sebastian Grebe

Overview of this book

React and GraphQL, when combined, provide you with a very dynamic, efficient, and stable tech stack to build web-based applications. GraphQL is a modern solution for querying an API that represents an alternative to REST and is the next evolution in web development. This book guides you in creating a full-stack web application from scratch using modern web technologies such as Apollo, Express.js, Node.js, and React. First, you’ll start by configuring and setting up your development environment. Next, the book demonstrates how to solve complex problems with GraphQL, such as abstracting multi-table database architectures and handling image uploads using Sequelize. You’ll then build a complete Graphbook from scratch. While doing so, you’ll cover the tricky parts of connecting React to the backend, and maintaining and synchronizing state. In addition to this, you’ll also learn how to write Reusable React components and use React Hooks. Later chapters will guide you through querying data and authenticating users in order to enable user privacy. Finally, you’ll explore how to deploy your application on AWS and ensure continuous deployment using Docker and CircleCI. By the end of this web development book, you'll have learned how to build and deploy scalable full-stack applications with ease using React and GraphQL.
Table of Contents (17 chapters)
1
Section 1: Building the Stack
5
Section 2: Building the Application
14
Section 3: Preparing for Deployment

Testing React with Enzyme

So far, we've managed to test our server and all GraphQL API functions. Currently, however, we're still missing the tests for our frontend code. While we render the React code when requesting any server route, such as the /app path, we only have access to the final result and not to each component. We should change this to execute the functions of certain components that aren't testable through the backend. First, install some dependencies before using npm, as follows:

npm install --save-dev enzyme @wojtekmaj/enzyme-adapter-react-17ignore-styles jsdom isomorphic-fetch

The various packages are described in more detail here:

  • The enzyme and @wojtekmaj/enzyme-adapter-react-17 packages provide React with specific features to render and interact with the React tree. This can be through either a real Document Object Model (DOM) or shallow rendering. We are going to use a real DOM in this chapter because it allows us to test all features...