Sorry, this page is no longer available

We may earn an affiliate commission when you visit our partners.

JavaScript Unit Testing with Jest

Unit testing is a vital part of software development. This course will teach you how to write unit tests for your JavaScript code using Jest.

Unit testing is sometimes neglected by software developers, but it is an essential part of a good developer’s skill set. In this course, JavaScript Unit Testing with Jest, you’ll learn to write unit tests for a range of JavaScript functions. First, you’ll explore why unit testing is so important for creating high quality software. Next, you’ll discover how to get started writing simple JavaScript unit tests. Finally, you’ll learn how to take your unit tests to the next level and handle a range of scenarios you may encounter. When you’re finished with this course, you’ll have the skills and knowledge of Jest needed to write unit tests for all of your JavaScript projects.

This course is no longer available. Find something similar by browsing:

JavaScript Unit Testing Jest Mocks Asynchronous Code Code Coverage Matchers

What's inside

Syllabus

Course Overview

Writing Your First Unit Test with Jest

Exploring Common Matchers

Using Mocks

Traffic lights

Read about what's good

what should give you pause

and possible dealbreakers

Teaches unit testing with Jest, which is becoming industry standard for JavaScript

Taught by Gabriel McNeilly, an educator recognized for their work in JavaScript

Provides a strong foundation for beginners

May require that learners have basic JavaScript knowledge prior to taking

Save this course

Create your own learning path. Save this course to your list so you can find it easily later.

Save

Reviews summary

Practical javascript unit testing with jest

According to learners, this course offers a highly practical and clear introduction to JavaScript unit testing with Jest. Students consistently praise the instructor's ability to explain complex concepts with great clarity and the hands-on nature of the exercises and labs. Many found the content on mocks and asynchronous testing particularly valuable, leading to immediate applicability in their professional work. While some experienced developers felt certain sections were a little basic or rushed for advanced scenarios, the course is widely regarded as providing a solid and up-to-date foundation for improving code quality.

The course material is actively maintained and up-to-date.

"I found all the Jest syntax and practices to be completely current with the latest versions."

"The content is up-to-date and relevant, unlike some other courses I've taken recently."

"I appreciate that the examples and practices align with modern Jest development workflows."

Comprehensive and up-to-date coverage of Jest features.

"The sections on mocks and async testing were particularly useful for my work."

"From basic assertions to complex async tests, everything is covered thoroughly."

"The course content is up-to-date and relevant, which will definitely improve my code quality."

"I appreciated the coverage of different matchers and how to structure tests effectively."

Focus on practical exercises and real-world application.

"I appreciated the hands-on approach. The labs really solidify understanding."

"The practical exercises are key; I learned how to apply these skills immediately at work."

"The hands-on coding and projects are the strongest part of the course for me, very useful."

"I found the exercises challenging but fair, which really helped cement my knowledge."

Instructor's teaching style makes complex concepts easy to grasp.

"The instructor explains concepts with great clarity and provides practical examples."

"Absolutely brilliant! The course breaks down complex topics into digestible chunks."

"This course gave me a very clear understanding of Jest, making it easy to follow."

"I appreciate the instructor's perfect pace and how easy it was to follow along."

Some experienced learners desired more advanced depth.

"Sometimes the explanations felt a little basic for me, but overall, it's a good foundation."

"I felt like some parts were rushed, especially when dealing with advanced mocking scenarios."

"It's good for a quick intro, but not super in-depth for everything, requiring outside research."

"I had to consult the Jest docs quite a bit for some of the more complex use cases."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in JavaScript Unit Testing with Jest with these activities:

Refresh JavaScript Basics

Show steps

Review essential concepts from the course, like variables, functions, and control flow, to ensure a solid foundation for your unit testing journey.

Show steps

Revisit JavaScript tutorials and documentation
Solve JavaScript coding challenges on platforms like Codewars or HackerRank
Review class notes or textbooks on JavaScript

Show all one activities

Career center

Learners who complete JavaScript Unit Testing with Jest will develop knowledge and skills that may be useful to these careers:

Software Quality Assurance Engineer

Software Quality Assurance Engineers plan and perform tests to assess software quality and identify issues. Unit testing is a fundamental part of software development as it helps identify bugs and ensure that the software is working as expected. A course in JavaScript Unit Testing with Jest can provide Software Quality Assurance Engineers with the skills to write effective unit tests and contribute to the development process.

See salaries and explore the career path for Software Quality Assurance Engineer

Software Tester

Software Testers plan and perform tests to evaluate the quality of software and identify issues. Unit testing is part of this process, as it helps identify bugs and ensure that the software is working as expected. A JavaScript Unit Testing with Jest course can provide Software Testers with the skills they need to write effective unit tests and contribute to the development process.

See salaries and explore the career path for Software Tester

Quality Assurance Analyst

Quality Assurance Analysts plan and perform tests to assess software quality. Unit testing is essential for this career as it helps Quality Assurance Analysts ensure that the software meets specifications and customer requirements. This course, JavaScript Unit Testing with Jest, provides a foundation in unit testing concepts and techniques that can be applied to software development projects.

See salaries and explore the career path for Quality Assurance Analyst

Software Development Manager

Software Development Managers plan, coordinate, and oversee software development projects. Unit testing is an essential part of software development as it helps ensure the quality and reliability of the code. A course in JavaScript Unit Testing with Jest can provide Software Development Managers with the skills to evaluate and improve unit testing practices within their teams.

See salaries and explore the career path for Software Development Manager

Webmaster

Webmasters maintain and update websites, ensuring their functionality and accessibility. Unit testing is important for web development as it helps identify and fix issues in the code. A course in JavaScript Unit Testing with Jest could be beneficial for Webmasters who work with JavaScript-based websites.

See salaries and explore the career path for Webmaster

Computer Programmer

Computer Programmers write, test, deploy, maintain, and evaluate computer software. JavaScript is a popular language for web development, and unit testing is crucial for ensuring the quality and reliability of web applications. A course in JavaScript Unit Testing with Jest could be beneficial for Computer Programmers who work with JavaScript.

See salaries and explore the career path for Computer Programmer

Systems Analyst

Systems Analysts analyze and design computer systems, including hardware, software, and networks. Unit testing is a crucial part of systems analysis, as it helps ensure that the system meets requirements and performs as expected. A course in JavaScript Unit Testing with Jest could provide Systems Analysts with the skills to write effective unit tests for system components.

See salaries and explore the career path for Systems Analyst

Computer Systems Analyst

Computer Systems Analysts design, implement, and maintain computer systems, including hardware, software, and networks. Unit testing is a crucial part of systems analysis, as it helps ensure that the system meets requirements and performs as expected. A course in JavaScript Unit Testing with Jest could provide Computer Systems Analysts with the skills to write effective unit tests for system components.

See salaries and explore the career path for Computer Systems Analyst

Information Technology (IT) Manager

Information Technology (IT) Managers plan, coordinate, and oversee IT operations within an organization. Unit testing is an essential part of software development as it helps ensure the quality and reliability of the code. A course in JavaScript Unit Testing with Jest can provide IT Managers with the skills to evaluate and improve unit testing practices within their teams.

See salaries and explore the career path for Information Technology (IT) Manager

Web Developer

Web Developers use programming languages like JavaScript to create a functional website. They often collaborate with Web Designers to transform the design into a functional site. A course in JavaScript Unit Testing with Jest could be helpful for this role since it can help Web Developers test code, such as JavaScript code.

See salaries and explore the career path for Web Developer

Data Analyst

Data Analysts collect, analyze, and interpret data to provide insights and help organizations make informed decisions. Unit testing is important for ensuring the accuracy and reliability of data analysis, as it helps identify and fix errors in the code. A course in JavaScript Unit Testing with Jest could be helpful for Data Analysts who work with JavaScript-based data analysis tools or platforms.

See salaries and explore the career path for Data Analyst

Database Administrator

Database Administrators manage and maintain databases, ensuring their availability, performance, and security. Unit testing is essential for database development as it helps identify and fix issues in the code. A course in JavaScript Unit Testing with Jest could provide Database Administrators with the skills to write effective unit tests for database-related code or applications.

See salaries and explore the career path for Database Administrator

Software Engineer

Software Engineers design, develop, test, deploy, maintain, and evaluate computer software, such as computer games or operating systems. Software Engineers decide what the software should do, how it should work, and how users will interact with it. A course on JavaScript Unit Testing may be useful for this career as it would help Software Engineers write clear, concise, and readable unit tests to ensure the code's quality.

See salaries and explore the career path for Software Engineer

Technical Support Specialist

Technical Support Specialists provide technical assistance to customers and help resolve software and hardware issues. Unit testing plays a crucial role in software development, as it identifies issues early in the development cycle and ensures the software is stable and reliable. A course in JavaScript Unit Testing with Jest can help Technical Support Specialists understand unit testing concepts and troubleshooting techniques.

See salaries and explore the career path for Technical Support Specialist

User Experience (UX) Designer

User Experience (UX) Designers design and evaluate user interfaces (UIs) to ensure they are easy to use and visually appealing. While not directly related to unit testing, a course on JavaScript Unit Testing can provide UX Designers with a better understanding of how software development works and how to collaborate with developers to create user-friendly and efficient UIs.

See salaries and explore the career path for User Experience (UX) Designer

Reading list

We've selected six books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in JavaScript Unit Testing with Jest.