Unit Testing in Nestjs – The Complete Guide

September 29, 2023 Development, UdemyUdemy

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Unit Testing in Nestjs – The Complete Guide Course

Learn Unit Testing with NestJs, Jest, GraphQL, Prisma, and Postgres

Test-driven development is a powerful tool for preventing bugs within your application. NestJs Unit testing is the method of testing small pieces of code/components in isolation in your NestJS application. This helps in improving the code quality and helps in finding bugs early on in the development life cycle. This also provides an added advantage to the users in the way that they can add any new features without breaking any other part of their application.

We are going to use the Jest framework in this course. Jest is an open-source Javascript testing framework developed by Facebook. It was mainly built for React, Node, Babel, TypeScript, Angular, Vue, and JavaScript-based applications. It primarily focuses on simplicity and support for large web applications. Jest was built on top of Jasmine with multiple layers.

In this Unit Testing in Nestjs – The Complete Guide course, We are going to build two different applications. In the first application, we are going to build the CRUD(create, read, update, delete) endpoints using Nestjs, and Postgres without TypeORM. In the next part, we are going to test GraphQL and Prisma API. I will teach you how to write unit tests using the Jest framework. You will also learn mocking in Jest and much more.

What you’ll learn