React Testing Library and Jest: The Complete Guide

Name: React Testing Library and Jest: The Complete Guide
Price: 12.75 USD
Availability: InStock

7h 40m 24s

English

Paid

September 25, 2024

Congratulations! You've discovered the most popular, most comprehensive, and most up-to-date resource available online for mastering React app testing with React Testing Library and Jest! Thousands of engineers have successfully learned testing through this course, and so can you. Employing a time-tested, battle-proven method, this course ensures you understand precisely how testing functions, potentially securing you a new role as a software engineer or aiding you in developing that app you've always dreamt about.

Why Choose This Course?

The distinctive factor: Gain insights into design patterns employed by leading firms for testing substantial React applications.

The Importance of Testing

Testing validates your code's expected behavior, offering several unique benefits to any frontend development:

Create smaller, more comprehensible codebases
Deploy with confidence, ensuring correct behavior
Test app sections individually to minimize user disruption
Facilitate independent team work on engineering teams
Modify codebases without risking existing functionality

Although testing is popular, online misinformation abounds. Collaborating with top engineers, this course assures total technical accuracy.

Course Projects and Learning Outcomes

What Will You Build?

This course emphasizes testing components across various environments. You'll start by writing tests for a small mini-project to gain initial experience. Progressing onward, you'll explore React Testing Library comprehensively by creating a series of interactive cheatsheets—excellent future references for testing intricacies. Finally, you'll apply tests to a larger React app inclusive of authentication, data fetching, and navigation features.

Topics Covered

Customize testing environments with custom Jest matchers
Learn to debug tests through extensive bug fixes
Accelerate test execution using a fake data-fetching process
Implement best practices in a large React project
Explore all functionalities bundled within React Testing Library
Enhance element selection using the ARIA Role system
Gain experience in testing authentication and routing
Develop efficient tests utilizing numerous testing shortcuts
Demystify the ‘act’ function in React
Learn techniques for handling third-party libraries during testing
Utilize Jest to ‘mock’ functions and libraries

Instructor's Expertise

Having spent the early years of my software engineering career focused on testing, practicing Test Driven Development to create thousands of lines of code under the mentorship of industry leaders, I am eager to share this knowledge with you. Testing is one of my fiercest passions, and I strive to instill the same enthusiasm in you.

About the Authors

Stephen Grider

Stephen Grider is one of the longest-running and most prolific instructors on Udemy, with a catalog covering essentially every major JavaScript framework, plus Docker, Kubernetes, AWS, and the broader full-stack development landscape. His teaching style is patient and project-oriented — most of his courses are structured around building a substantial application from scratch rather than working through disconnected tutorial examples.

The catalog covers React, Redux, Next.js, Vue, Angular, GraphQL, Node.js, Docker / Kubernetes, AWS infrastructure, React Native and Flutter for mobile, the algorithm / data-structure interview prep track, and the modern TypeScript / Bun / Rust adjacent material that working JavaScript developers increasingly encounter. Few independent instructors have maintained Stephen's breadth this consistently for this long.

The CourseFlix listing under this source carries over 25 Stephen Grider courses spanning that range. Material is paid; Stephen Grider courses are typically sold individually on Udemy. Courses are aimed primarily at developers picking up a specific technology through working through a complete project.

Udemy

Udemy is the largest open marketplace for online courses on the internet. Founded in 2010 by Eren Bali, Oktay Caglar, and Gagan Biyani and headquartered in San Francisco, the company went public on the Nasdaq in 2021 under the ticker UDMY. The platform hosts well over two hundred thousand courses across software development, IT and cloud, data science, design, business, marketing, and creative skills, taught by tens of thousands of independent instructors. Roughly seventy million learners use it worldwide, and the corporate arm — Udemy Business — supplies a curated subset of that catalog to enterprise customers.

Because Udemy is a marketplace rather than a single editorial publisher, the catalog is uneven by design. The strongest material lives in the long-form, project-based courses authored by working engineers — full-stack JavaScript, React, Node.js, Python data science, AWS, Docker and Kubernetes, mobile development with Flutter and React Native, and cloud certification preparation. The CourseFlix listing under this source is the slice of that catalog that has been mirrored here for offline-friendly viewing, organized by topic and updated as new releases land. Pricing on Udemy itself swings dramatically with the site's near-permanent sales, which is why the platform is best treated as a deep reference catalog: pick instructors with strong reviews and a track record of updating their material rather than buying on the headline price alone.

Watch Online 85 lessons

0:00

#1: How to Get Help

All Course Lessons (85)

#	Lesson Title	Duration
1	How to Get Help Demo	01:18
2	Start Testing... Now!	09:06
3	A Few Critical Questions	05:31
4	Project Setup	02:07
5	Adding the Form	04:53
6	Handling User Input	03:04
7	Rendering the List of Users	05:49
8	Our First Test	08:23
9	Element Query System	03:15
10	Understanding ARIA Roles	03:23
11	Understanding Jest Matchers	03:06
12	Simulating User Events	06:01
13	Recording Function Calls	07:41
14	Introducing Mock Functions	05:20
15	Querying Elements by Labels	07:04
16	Testing the UserList	05:32
17	Getting Help with Query Functions	08:13
18	Query Function Escape Hatches	06:59
19	Another Query Function Fallback	06:08
20	Testing Table Contents	04:13
21	Avoiding BeforeEach	03:14
22	Testing the Whole App	06:41
23	A Touch of Test Driven Development	05:38
24	Feature Implementation	03:12
25	Introducing RTL Book	02:30
26	A Few Notes on RTL Book	03:18
27	Partial Role List	04:09
28	Finding Elements by Role	05:33
29	Finding by Accessible Names	04:38
30	Linking Inputs to Labels	05:03
31	Directly Assigning an Accessible Name	05:04
32	Deeper into Query Functions	05:25
33	GetBy, QueryBy, FindBy	08:58
34	More on Single Queries	06:13
35	Multiple Element Variations	03:19
36	When to use These Queries	05:57
37	When to use Async Queries	06:55
38	Query Criteria	08:03
39	When to Use Each Suffix	07:01
40	Diving into Matchers	04:54
41	Introducing Custom Matchers	03:46
42	Implementing a Custom Matcher	06:59
43	App Overview and Setup	05:34
44	The Tech in This Project	04:23
45	The Path Ahead	05:00
46	A Process for Debugging	08:49
47	Understanding Data Flowing Into the Component	09:53
48	Developing a Test and a Fix	08:18
49	Looping Over Assertions	03:41
50	Flexible Queries	02:23
51	Another Bug!	04:49
52	Analyzing the Data... Again!	07:22
53	Adding Router Context	07:08
54	Unexpected State Updates	04:41
55	Act Included with React Testing Library	05:55
56	Using Act (Hopefully Not!) with RTL	02:20
57	Solving the Act Warning	09:58
58	Module Mocks	05:07
59	Absolute Last Ditch Act Solution	03:39
60	Checking the Link Href	02:47
61	Implementing the Feature	05:22
62	Checking the Icon	04:21
63	Checking the Link	03:18
64	Easy Fix, Hard Test	05:46
65	Options for Testing Data Fetching	05:22
66	Using a Request Handler	02:51
67	Initial MSW Setup	11:57
68	Inspecting the Component State	05:05
69	Effective Request Testing	11:35
70	An Issue with Fake Handlers	03:51
71	Easier Fake Routes - Here's the Goal	05:11
72	Making a Reusable Create Server Function	07:28
73	Testing Authentication	03:10
74	Understanding the Auth API	06:12
75	Order of Execution	06:35
76	Scoping Test Hooks	04:43
77	Act Warnings... Again!	04:49
78	Assertions Around Auth Links	04:14
79	Wait... It Doesn't Work!?	03:47
80	Limiting Test Execution	04:23
81	Using Debuggers in Tests	04:29
82	Test Debugging in Action	08:54
83	One Last Debugging Hint	03:52
84	It Is a Caching Issue!	04:29
85	Solving the Caching Issue	03:17

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Frequently asked questions

What prerequisites are necessary before taking this course?

Prospective students should have a basic understanding of React and JavaScript. Familiarity with the concepts of components and state management in React will be beneficial, as the course focuses on testing React applications using React Testing Library and Jest.

What types of projects or exercises will I work on in this course?

The course includes writing tests for small mini-projects to help students gain hands-on experience. As you progress, you will explore React Testing Library's capabilities by testing various components and environments. The curriculum is designed to incrementally build your testing skills.

Who is the target audience for this course?

This course is aimed at software engineers and developers interested in mastering testing for React applications. It is suitable for those looking to improve their skills in writing tests using React Testing Library and Jest, whether for professional development or personal projects.

What specific tools or platforms will I learn to use in this course?

The course focuses on React Testing Library and Jest as the primary tools for testing React applications. Students will learn about element query systems, Jest matchers, mock functions, and various query functions to effectively validate the behavior of React components.

How does the depth and scope of this course compare to other similar courses?

This course offers a comprehensive exploration of testing in React applications, covering 85 lessons that include advanced topics like simulating user events, custom matchers, and module mocks. It provides insights into design patterns used by leading firms, setting it apart from other courses that may not cover these areas in as much detail.

What topics are explicitly not covered in this course?

The course does not cover backend testing or testing frameworks outside of React Testing Library and Jest. It focuses exclusively on frontend testing within the context of React applications, so students interested in other frameworks or backend testing will need to seek additional resources.

What is the estimated time commitment for this course?

While the total runtime of video content is not specified, the course consists of 85 lessons. Given the depth of material covered, students should allocate sufficient time for both video lessons and hands-on practice. A regular study schedule will help in effectively mastering the testing concepts.