Sep 1, 2023
Test-Driven Development (TDD) with Next.js
nextjstddtestingjestreact-testing-libraryplaywright
Next.js doesn't enforce TDD, but it works well with a TDD workflow when you separate pure logic, component behavior, and end - to - end flows.This post shows how to structure tests around Next.js without fighting the framework.
1Explains how to apply the classic Red-Green-Refactor loop to a Next.js codebase.
2Shows how to start TDD from pure functions in /lib before touching components.
3Covers component-level TDD with Jest/Vitest and React Testing Library.
4Describes how to test Route Handlers by extracting core logic into testable modules.
5Discusses where E2E tests with Playwright fit into a practical TDD strategy for Next.js.