Unit Testing & e2e Testing in Nest.js with JEST | Udemy [Update 04/2026]
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Master Unit & e2e Testing in NestJS with Jest, including Controllers, Services, Mocking, Test Modules, and Real API Test

What you'll learn
Understanding testing in NestJS
Setting up the testing environment with Jest
Writing Unit Tests for Controllers
Writing Unit Tests for Services
Testing NestJS Modules using the Testing Module
Mocking dependencies and providers in tests
Testing authentication and guards
Writing End-to-End (e2e) Tests for APIs
Testing database interactions and responses
Best practices for clean and maintainable test cases

If you want to learn Unit Testing and End-to-End (e2e) Testing in NestJS using Jest, then this course is for you.

NestJS is one of the most powerful frameworks for building scalable backend applications. But writing code is not enough - proper testing ensures your application is reliable and production-ready.

In this course, you will learn how to write unit tests for controllers, services, and modules and how to perform end-to-end testing of APIs using Jest. We will use TypeScript and NestJS's built-in Testing Module to mock dependencies, test business logic, and verify complete API behavior.

By the end of this course, you will be able to confidently write clean, maintainable, and production-ready tests for your NestJS applications.

=== Super Friendly Support ===

If you ever get stuck, I'm here to help. I try to respond as quickly as possible so you don't stay blocked while learning.

What we will cover

Understanding testing in NestJS

Setting up testing with Jest

Unit testing controllers and services

Mocking dependencies and providers

Using the NestJS Testing Module

Writing End-to-End (e2e) tests for APIs

Best practices for maintainable tests

If you want to master testing in NestJS, enroll now and I will see you in the course.

Who this course is for:
Anyone who want to learn how to learning Unit Testing
Anyone who want to learn backend development

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