Integration Testing Node.js APIs with Jest and Supertest
Learn how to write integration tests for Node.js and Express APIs using Jest and Supertest. Test middleware, validation, error handling, and improve coverage with real-world examples.
Learn how to write integration tests for Node.js and Express APIs using Jest and Supertest. Test middleware, validation, error handling, and improve coverage with real-world examples.
Most Node.js developers write state-based unit tests and stop there. While those tests are important, they don’t tell the full story. Real-world applications are made of collaborating modules, and if those collaborations break, your app breaks.
In this guide, I’ll walk you through how to unit test an Express API in Node.js, using practical examples from a Task Manager project.
Stop struggling with messy Node.js code. Discover how to use TypeScript interfaces and inheritance to build scalable, maintainable projects. Learn senior-level strategies to enforce structure and reuse code efficiently.
Learn the essential steps to set up a robust TypeScript Node.js project from scratch, including Jest testing, ESLint/Prettier configuration, and development automation.
Ports & Adapters pattern, also known as Hexagonal Architecture helps decouple business logic from external dependencies, making your app flexible, testable, and future-proof.
In this guide, I’ll show you exactly how to enable source maps in a Node.js environment. By the end of this post, you’ll be able to transform your stack traces from cryptic compiled nonsense into clear references to your original code.
Delivering the right data at the right time is one of the most important responsibilities of a well-designed API. Users expect fast, accurate, and flexible querying — and that means your backend needs solid search, sort, and filter capabilities.
Is your API struggling with pagination? Are your queries getting slower as your dataset grows? If you’re still using offset-based pagination, that might be the culprit.
Struggling with pagination in your Node.js REST API? Offset pagination can make it simple to fetch data efficiently while keeping your backend scalable and responsive.