Master React Testing with Jest and React Testing Library

Published: 31 July 2023
on channel: CodeX

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Learn how to test React apps with React Testing Library and Jest! A complete, all-in-one guide to fully testing your React projects using React Testing Library and Jest.
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This course uses a time-tested, battle-proven method to make sure you understand exactly how testing works, and will get you a new job working as a software engineer or help you build that app you've always been dreaming about.

Testing is used to verify your code works as expected. This provides a set of unique benefits to any frontend:

Author smaller, easier to understand codebases

Deploy your code with confidence that it will behave correctly

Test each portion of your app separately - limit the chance of interrupting your users

Allow each of your engineering teams to work independently

Change your codebase without worrying about breaking an existing feature

Testing is a popular topic, but there is a lot of misinformation online. This course has been developed with input from top engineers to ensure total technical accuracy.

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What will you build?

This course focuses on testing components in a variety of different environments. You will begin by writing tests for a small mini-project, just to get some quick initial experience. From there, you'll learn about React Testing Library and all of its functionality by building a series of interactive cheatsheets. You can use these cheatsheets as a future reference to easily remember the intricacies of testing. Finally, you'll add tests to a rather large React app, complete with authentication, data fetching, and navigation.

Here's a partial list of some of the topics you'll cover:

Customize your test environment by writing custom Jest matchers

Learn how to debug your tests by fixing many bugs

Run tests faster by implementing a fake data-fetching process

Understand best practices by working on a large React project

See an exhaustive list of all the functionality packed into React Testing Library

Enhance your element-selecting powers by using the ARIA Role system

Get experience testing authentication and routing

Write more efficient tests by learning dozens of testing shortcuts

Finally understand the most mysterious function in React - the 'act' function!

Learn multiple ways of handling third-party libraries in a test environment

Use Jest to 'mock' functions and libraries

What you'll learn

Everything you need to know about testing React Components using React Testing Library and Jest
Understand how to simulate user events and data fetching in a test environment
Verify your components the way your components work - before deploying them!
Get practical, hands-on experience adding tests to a large React project
Explore hidden aspects of testing that aren't covered in any other testing course
Save time by building your own custom Jest matchers
Focus on learning why best practices exist - and when to break them!

#React #Jest #Morioh

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