Javascript Testing

Learn how to Unit testing, Code Coverage, Mocking and more

Hey Amigos 🙋🏽‍♂️

Welcome to the JavaScript Testing course. This course is your gateway to mastering the essential skill of testing in JavaScript. Testing is a critical part of software development that ensures your code works as expected. With this course, you'll learn how to use Jest, a popular JavaScript testing framework, to write and manage your tests effectively.

  • Learn the different types of testing: Unit, integration, and end-to-end (e2e) testing. You'll understand when and how to use each one to ensure your code is robust and reliable.
  • Get hands-on experience with Jest: You'll learn how to use its powerful features to write clear, effective tests.
  • Write tests that cover every line of your code: You'll ensure your codebase is reliable and works as expected under different conditions.
  • Explore advanced Jest features, including Matchers and Mocking: These features will allow you to write more powerful and flexible tests.
  • Learn how to test asynchronous code: A common source of bugs in JavaScript. You'll also learn how to use the Jest CLI to run and manage your tests.

Key Features


Who is the course for?

This course is perfect for anyone who wants to ensure their JavaScript code is reliable and efficient.

If you're a beginner, this course will provide a solid foundation in JavaScript testing. You'll learn how to write tests that ensure your code works as expected, a crucial skill as you start building more complex applications.

For experienced developers, this course offers an opportunity to refine your testing skills. You'll learn how to use Jest to write comprehensive tests, making your code more robust and reliable.

Mastering JavaScript Testing with Jest

Testing is a crucial part of software development. It involves writing additional code to verify that your main codebase works as intended and is free from bugs. In this course, you'll learn about the different types of testing, including unit, integration, and end-to-end (e2e) testing, each serving a unique purpose in ensuring the robustness of your code.

Jest, a JavaScript testing framework developed by Facebook, is a powerful tool that makes testing simple and enjoyable. With its focus on simplicity and a comprehensive API, Jest has become the go-to testing framework for many JavaScript developers. It requires zero configuration, allowing you to test any codebase and ensure that it meets the required code coverage. From matchers to mocking, Jest provides all the tools you need in one place, and it's well-documented and maintained.

In this course, you'll learn how to use Jest effectively to test your JavaScript code. You'll cover:

  • Unit Testing: Learn how to write tests for individual units of code, such as functions or methods.
  • Matchers: Understand how to use Jest's matchers to test values in different ways.
  • Mocking: Discover how to use Jest's mocking feature to simulate function calls, server responses, and more.
  • Code Coverage: Learn how to ensure your tests cover enough of your codebase.
  • Testing Asynchronous Code: Understand how to test code that runs asynchronously, such as API calls.
  • Jest CLI: Learn how to use Jest's command-line interface to run and manage your tests.

You might be thinking: I have to write code to test my code? But don't worry, this course has got you covered. Dive in and start your journey to mastering JavaScript testing with Jest.

Course Curriculum

  6 - Table Testing
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  Setup and Teardown
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  Testing Asynchronous Code
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  Jest CLI
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  UI and e2e Testing
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How JavaScript Testing can boost your career

Mastering JavaScript testing with Jest can significantly enhance your technical skills, making you a more competent and sought-after professional in the tech industry. Here's how:

  • Boosting Reliability: Learning how to test your JavaScript code means you can ensure your applications perform as expected under various conditions. This skill makes you a crucial asset to any team, as you can help prevent bugs from reaching the final product, thereby increasing the reliability of the software.
  • Enhancing Efficiency: Testing allows you to identify and fix bugs early in the development process, saving valuable time and effort in the long run. This efficiency is highly valued in the fast-paced tech industry, making you a more productive developer.
  • Improving Code Quality: Ensuring your code is thoroughly tested helps improve the overall quality of your applications. This commitment to quality can set you apart in a competitive job market, as employers are always on the lookout for developers who can produce high-quality, reliable code.
  • Increasing Versatility: Jest is a versatile tool used for testing a wide array of JavaScript applications, from simple websites to complex web apps. By mastering Jest, you can increase your versatility as a developer, equipping you to work on a diverse range of projects.
  • Preparation for Real-World Projects: Real-world projects demand robust testing to ensure the end product is reliable and user-friendly. The skills acquired from this course will prepare you to confidently tackle real-world projects, ensuring the software you develop meets the highest standards of reliability and user experience.

30-Day ‘Try It’ Money-Back Guarantee

No Risk!

I want to reassure you that with our 30-Day Money-back Guarantee, you have nothing to lose by trying out this course.

And just remember, if you do decide to take advantage of our policy, make sure you haven't completed more than 10% of the course so that you're eligible for the refund. I've put this in place to make sure the refund policy is fair for everyone and to give you enough time to try out the course.

If you have any questions, please don't hesitate to get in touch at [email protected]

For first-hand accounts of Amigoscode's courses, go ahead and ask the 60,000 coders in our communities on Facebook and Discord. There will be someone with similar circumstances to yours who will give you all the advice you may need.


In addition to all the knowledge, skills and applications you have built, at the end of the course, you will also be able to prove your efforts with a certificate issued by Amigoscode! Join thousands of others on LinkedIn who proudly display their achievements!

Your Instructor

Mama Samba Braima Nelson
Mama Samba Braima Nelson
Hi, I am Mama Samba Braima AKA Nelson!

Passionate DevOps/Software Engineer and a YouTuber. After graduating from King's College in Computer Science I acquired expertise working as a Java Engineer for companies such as CitiGroup and Starling. Over the years, I discovered my passion for teaching - that's how it all started.

From my Youtube channel to the Amigoscode website and Java Bootcamps in London, I have taught coding to millions of people from around the world and helped them to break into the Software Engineering world.

My mission is to make learning accessible for everybody. Whether you're just starting or have been coding for a while, I want to help you become the best version of yourself and prove to you that anything is possible!

Frequently Asked Questions

When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like - across any and all devices you own.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 30 days and we will give you a full refund.

Get started now!

I can’t wait to join you on your journey to becoming a JavaScript Testing Mastermind!