As a developer, I constantly run into the same problem while testing apps: I need email addresses for verification emails. Whether it’s testing signup flows, pa...

Problem When running tests with SQLite, MySQL‑specific functions such as FIELD cause a no such function error. SQLite does not include MySQL’s built‑in functio...

React Server Components RSC Overview React Server Components RSC represent a meaningful shift in how React applications are structured. By moving rendering to...

What is Dependency Injection? Dependency Injection DI is a design pattern that supplies a class with the objects it needs from the outside rather than creating...

The Problem Everyone loves a green test summary: 546 tests. Meanwhile, the API is quietly burning in the background – the part nobody likes to admit. You can h...

!Data pipeline testing pyramid with schema tests at the base, contract tests in the middle, and regression tests at the tophttps://dev-to-uploads.s3.amazonaws.c...

Introduction If you use Vite + React + TypeScript, the fastest way to add tests is Vitest. In this post, I will show a clean setup you can copy. Why this stack...

Building a Professional Calculator in Go When I set out to build a calculator in Go, I thought it would be a weekend project. After all, how complex could a ca...

What I tried Prism by Stoplight is excellent for local CLI mocking. bash npx @stoplight/prism-cli mock api.yaml Starts a local proxy in seconds, validates requ...

!Cover image for Testing, is it the egg or the chicken?https://media2.dev.to/dynamic/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%...

Overview I just launched tempinbox.dev, a temporary email service aimed at developers, QA engineers, and anyone who regularly tests signup, OTP, or verificatio...

Someone told me Cursor deprecated rules in favor of Agent Skills. I went and tested it. Short answer: Rules are not deprecated. They do different things. Here’s...