Next.Js & Modern Framework Testing

Multi-tenancy is one of the hardest architectural patterns to test correctly. Shared infrastructure, data isolation guarantees, tenant-specific features, and subdomain routing all require specialized E2E testing strategies. Here's the complete playbook.

Hydration errors are React's most confusing class of bug. They appear silently, break interactivity unpredictably, and are notoriously hard to reproduce. This guide gives you a systematic process to detect, diagnose, and fix them for good.

React Server Components changed how data flows in Next.js apps — and they changed how you need to test them. This guide covers unit, integration, and E2E testing strategies for RSC in production Next.js applications.