Complete Guide to Testing React Apps with Jest and Selenium

Takeaway Skills

Write testable code

Apply Test-Driven-Development

Use libraries such as Jest, Selenium, @testing-library and more!

Write testable code

Apply Test-Driven-Development

Use libraries such as Jest, Selenium, @testing-library and more!

Course Overview

This course will teach you to properly test your React applications, starting from basic unit tests with Jest to automated integration tests using Selenium. You will learn everything from the ground up to the most advanced concepts that will give you confidence in shipping your softwar... See More

How You'll Learn

Hands-on coding environments

You don’t get better at swimming by watching others. Coding is no different. Practice as you learn with live code environments inside your browser.

Faster than videos

Videos are holding you back. The average video tutorial is spoken at 150 words per minute, while you can read at 250. That‘s why our courses are text-based.

No set-up required

Start learning immediately instead of fiddling with SDKs and IDEs. It‘s all on the cloud.

Progress you can show

Built in assessments let you test your skills. Completion certificates let you show them off.

Hands-on coding environments

You don’t get better at swimming by watching others. Coding is no different. Practice as you learn with live code environments inside your browser.

Faster than videos

Videos are holding you back. The average video tutorial is spoken at 150 words per minute, while you can read at 250. That‘s why our courses are text-based.

No set-up required

Start learning immediately instead of fiddling with SDKs and IDEs. It‘s all on the cloud.

Progress you can show

Built in assessments let you test your skills. Completion certificates let you show them off.

Course Contents

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1. Introduction

Introduction to Testing

Significance of Testing

Project Setup for Jest

Project Setup for Selenium

Course Assessment

Introductory Quiz

2. Write Your First Tests

Your First Story

TDD Lifecycle Revisited

Solution to the Exercise

Jest Cheatsheet

Course Assessment

Basic Testing Exercises

3. More Tests

Testing the TaskList Component

More on Integration Tests

Testing "Complete Task" Feature

Implementing "Complete Task" Feature

Solution to Exercise

Logic for Modifying Tasks

4. Mocking Modules in Unit Tests

What is Mocking and Why do we Need it?

Creating Mock Objects

Mocking Arbitrary Imports

Mocking Arbitrary Imports: Continued

Solution to the Exercise

Creating Reusable Mocks

Creating Reusable Mocks: Continued

Automocking

Course Assessment

Mocking Exercises

5. More on Integration Tests

Getting Tests to Clear the DB

6. Bonus: Custom Matchers

Custom Matchers for Jest