Gain insights into testing React apps effectively. Learn about unit tests with Jest and automated integration tests using Selenium to ensure robust, customer-ready software.

Complete Guide to Testing React Apps with Jest and Selenium.jpg

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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 software to customers.

Complete Guide to Testing React Apps with Jest and Selenium

## What is a matcher?
A matcher (or an assertion) is a function that is used to check for a specific condition. Most often, it compares two values. Here are some of the basic matches available in Jest:

# What is a matcher?
A matcher (or an assertion) is a function that is used to check for a specific condition. Most often, it compares two values. Here are some of the basic matches available in Jest:

Learn what a matcher is, why we need them, and how to develop your own.

Introduction

Introductory Quiz

Write Your First Tests

Basic Testing Exercises

More Tests

Mocking Modules in Unit Tests

Mocking Exercises

More on Integration Tests

Bonus: Custom Matchers

Custom Matchers for Jest

What is a matcher?