We will test the following GraphQL resolver which has authorization and permission checks in place. If the user isn't authenticated, the resolver returns an error. If the requirements for the database entity aren't met, the resolver returns an error. Otherwise, the resolver creates a new database entity. If we would use a GraphQL resolver…
GraphQL resolvers are used to resolve GraphQL queries to actual data. In this GraphQL tutorial, you will learn how to set up a GraphQL middleware for these resolvers for dealing with authorization and permissions. The following code snippet shows a GraphQL resolver with arguments that creates a new entity in a database. In this scenario, a user…
The Road to React teaches the fundamentals of React. You will build a real-world application in plain React without complicated tooling. Everything from project setup to deployment on a server will be explained for you. The book comes with additional referenced reading material and exercises with each chapter. After reading the book, you will be…
This tutorial demonstrates how to setup testing with Jest in Node.js. Whereas the previous tutorial has already shown you how to setup your Node.js application, this tutorial sets up a testing environment for your Node.js project. Let's dive into it by setting up Jest as testing framework. Node.js with Jest Setup In order to get our tests up and…
Docker Compose helps you run multi-container applications. In this tutorial, we expand a Docker project, which has only a Dockerfile, with Docker Compose. Before you continue, make sure you have set up Docker properly . If you haven't installed the docker-compose dependency, you can do it with Homebrew on MacOS with the following instruction on…
A collection of all the Docker commands I am using on a regular basis for developing applications with Docker. Docker Machine List all Docker engines: Create a Docker engine: Set environment variables for Docker engine: Start a Docker engine: Stop a Docker engine: Retrieve IP address for running Docker engine: Docker Images List Docker images…
Just recently I had to use Docker for my React web application development. Here I want to give you a brief walkthrough on how to achieve it. First of all, we need a React application. Either create a React app yourself, or follow this minimal React with Webpack setup guide . The React + Webpack application can be found on GitHub too. Note: If…
Just recently I had to use Docker for my create-react-app web application development. Here I want to give you a brief walkthrough on how to achieve it. First of all, we need a React application. Either create a React app with create-react-app yourself, or follow this React MacOS setup guide or this React Windows setup guide . Note: If you are…
Just recently I had to use Docker for my Node.js web application development. Here I want to give you a brief walkthrough on how to achieve it. First of all, we need a Node.js application. Either take your own Node.js application, or take this minimal Node.js application or this minimal Node.js with Express application . In this Docker tutorial…
Just recently I had to install Docker on my MacOS machine. Here I want to give you a brief walkthrough on how to achieve it. First of all, we need Homebrew to install all the necessary Docker dependencies. If there isn't a Homebrew installation on your Mac, follow this guide for a developer setup . Install the docker dependency with Homebrew after…
