Gain insights into writing automated tests for React apps with Jest and React Testing Library. Learn about simulating user interactions and testing asynchronous parts to enhance app reliability.

Testing React Apps with Jest and React Testing Library_468 x 60 copy 3.png

file.tar.gz

Jest - lesson 2

Jest with run command

Jest verbose

Jest coverage

Jest snapshot update

Jest react

Jest react-npm start

Jest react-copy

Jest react-C4

Jest react-C6

Jest react start c6

Jest - lesson 2-copy

Jest sandbox

Jest coverage-copy

Jest react-C4-start

Jest react-C4-start-5000

Jest react-npm start-5000

Jest react start c6-5000

Jest react-C8

The skills acquired from this course will allow you to write automated tests on your React app using Jest and React Testing Library, which are the de-facto testing tools for React. These tests will allow you to ship new versions of your app with confidence. The tests will also allow you to increase your release frequency, allowing you to get features to your customers quicker.

You will learn how to write robust tests that are resilient to breaking when code is improved and refactored, reducing maintenance costs.
The course will teach you how to simulate a user interacting with the app. Beyond that, it will also teach you how to robustly test asynchronous parts of the app.

Regular quizzes and exercises will reinforce knowledge throughout the course.

Testing React Apps with Jest and React Testing Library

## Tools

While the exercises in this course are mostly embedded within each lesson in the browser, the following sections detail the tools you need to do the lessons locally on your computer.

### Visual Studio Code

A code editor such as **Visual Studio Code** is required to write code.

Visual Studio Code can be installed from [here](https://nodejs.org/en/download/).

### Node.js and npm.

The projects that you will be working on require `npm`. The tests will also be executed by a `node.js` process.

Both `Node.js` and `npm` can be installed from [here](https://nodejs.org/en/download/). You’ll need at least the 5.2 version of `npm`.

## Working locally 

If you are working locally on your computer, download the code to your computer. Open the code editor in the relevant lesson `start` folder. You’ll need to install the dependencies using the following command before starting:

```shell
npm install
```





# Tools

While the exercises in this course are mostly embedded within each lesson in the browser, the following sections detail the tools you need to do the lessons locally on your computer.

## Visual Studio Code

A code editor such as **Visual Studio Code** is required to write code.

Visual Studio Code can be installed from [here](https://nodejs.org/en/download/).

## Node.js and npm.

The projects that you will be working on require `npm`. The tests will also be executed by a `node.js` process.

Both `Node.js` and `npm` can be installed from [here](https://nodejs.org/en/download/). You’ll need at least the 5.2 version of `npm`.

# Working locally 

If you are working locally on your computer, download the code to your computer. Open the code editor in the relevant lesson `start` folder. You’ll need to install the dependencies using the following command before starting:

```shell
npm install
```





This page details all the tools you’ll need to perform the lesson exercises locally on your computer.

Technical Requirements for Working Locally

Introduction

Getting Started with Jest

Using Matchers

Getting Started with React Testing Library

React Testing Library Queries

Firing Events

Mocking

Testing Different Types of Components

Appendix

Technical Requirements for Working Locally

Tools

Visual Studio Code

Node.js and npm.

Working locally