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Unit Testing with Javascript Training in USA

The course covers key concepts such as setting up testing environments, writing test cases, and using assertions to validate code behavior.

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Unit Testing with Javascript Training is a professional training program delivered by ProgNXT, a globally recognized corporate training provider. ProgNXT's Unit Testing with Javascript Training course in USA equips professionals with industry-relevant skills through hands-on, instructor-led sessions. Unit testing with JavaScript training teaches participants how to write effective and automated unit tests for JavaScript applications using popular...

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Designed and delivered by the ProgNXT Software Engineering Expert Panel — a vetted team of industry professionals with 18+ years of hands-on experience in system design, microservices architecture, Git, and SDLC practices

ProgNXT Software Engineering Expert Panel

Course Code: PRR40
14 Hrs
Course Rating 5/5
Last Updated: April 2026

Unit testing with JavaScript training teaches participants how to write effective and automated unit tests for JavaScript applications using popular frameworks like Jest, Mocha, or Jasmine. The course covers key concepts such as setting up testing environments, writing test cases, and using assertions to validate code behavior. Participants learn how to mock dependencies, handle asynchronous code, and ensure that individual components of their JavaScript application work correctly in isolation. Hands-on exercises help participants practice organizing tests, debugging failing tests, and integrating testing into CI/CD pipelines. By the end of the training, attendees will be proficient in applying unit testing techniques to ensure the reliability and quality of their JavaScript code.

Basic knowledge of JavaScript programming language.
Familiarity with object-oriented programming concepts and functions.
No prior experience with unit testing is required.

Unit Testing with JavaScript: Ability to write and execute unit tests using Jest, Mocha, or other testing frameworks.
Test Framework Setup: Skill in setting up testing frameworks for JavaScript applications.
Mocking and Stubbing: Understanding how to mock dependencies and use spies to isolate code components during tests.
Testing Asynchronous Code: Proficiency in writing tests for asynchronous JavaScript code using promises, async/await, and callbacks.
Test-Driven Development (TDD): Ability to use TDD principles to write tests first and then implement the corresponding code.
Code Coverage and Quality: Knowledge of tools and techniques for measuring and improving test coverage.

Upon completion of this course, participants will:

Understand the core concepts of unit testing and its significance in JavaScript development.
Learn to write unit tests using popular JavaScript testing frameworks like Jest and Mocha.
Gain hands-on experience in mocking and spying on functions.
Understand how to test both synchronous and asynchronous JavaScript code.
Learn how to integrate unit testing into the development lifecycle.
Be able to write effective and maintainable tests for JavaScript applications.

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Introduction to Unit Testing with JavaScript

Introduction to Unit Testing

What is unit testing and why is it important in JavaScript development?
Benefits of unit testing: improved code quality, early bug detection, and better maintainability.
Overview of unit testing frameworks: Jest, Mocha, Chai, and Jasmine.
Setting up a simple JavaScript testing project using Jest.
Hands-on Exercise

Understanding Test Cases and Assertions

Anatomy of a unit test: describe, it, expect, assertions.
Common assertions in JavaScript tests: expect().toBe(), expect().toEqual(), expect().toThrow(), etc.
Writing your first test case with assertions.
Hands-on Exercise

Mocking and Stubbing Functions

What is mocking, and why is it important for unit testing?
Introduction to mocking in Jest using jest.fn() and jest.spyOn().
Difference between mocking and stubbing.
Hands-on Exercise

Testing Synchronous Code

Writing tests for basic synchronous JavaScript functions.
Use cases for testing simple functions like mathematical operations, string manipulations, etc.
Hands-on Exercise

Summary and Q&A

Recap of key concepts learned.
Q&A session to address challenges and doubts faced during exercises.

Advanced Unit Testing Techniques with JavaScript

Testing Asynchronous JavaScript Code

How to test asynchronous code using Promises, async/await, and callbacks.
Techniques to handle asynchronous code in Jest and Mocha.
Testing asynchronous functions with done() callback, resolves, and rejects.
Hands-on Exercise

Test-Driven Development (TDD) in JavaScript

The concept of Test-Driven Development (TDD) and the Red-Green-Refactor cycle.
Benefits of TDD: ensuring code reliability and fostering good design practices.
Writing unit tests before code: practical examples using TDD.
Hands-on Exercise

Working with External Libraries and APIs

Mocking API calls using nock or jest-fetch-mock for unit testing.
Testing functions that interact with external services.
Hands-on Exercise

Advanced Mocking Techniques

Using spies to monitor function calls and arguments in tests.
Mocking entire modules using jest.mock() and mockImplementation().
Hands-on Exercise

Code Coverage and Test Reports

Introduction to code coverage tools: jest --coverage, Istanbul.
Measuring and improving code coverage in JavaScript projects.
Generating test reports and analyzing them to improve test effectiveness.
Hands-on Exercise

Best Practices for Unit Testing in JavaScript

Writing maintainable and effective tests: keeping tests isolated and focused.
Organizing tests: structuring tests to reflect the application's architecture.
Naming conventions and documenting tests.
Hands-on Exercise

Course Summary and Q&A

Recap of all concepts learned during the course.
Final Q&A session to address any lingering questions.
Closing remarks and feedback on the course.

Unit Testing with Javascript Training in USA

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