Middleware Edge Cases

Identify routing, auth, and redirect edge cases in web middleware.

Updated Jan 2, 2026

Search Tags:#testing #routing #middleware #nextjs #edge-cases #auth #redirects

Ready to run

npx skills add https://github.com/baskarajati/undangan --skill middleware-edge-cases

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: Middleware Edge Cases
Source: https://github.com/baskarajati/undangan/tree/main/.agent/skills/middleware-edge-cases
Command: npx skills add https://github.com/baskarajati/undangan --skill middleware-edge-cases

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps prevent regressions in request routing, authentication gating, and redirect behavior by providing a structured approach to test middleware edge cases and ensure consistent access control across routes.

Core Features & Use Cases

Enumerates protected and public routes to map expected behavior.
Tests unauthenticated access to protected routes and verifies redirect or denial.
Tests authenticated access to protected routes and verifies access.
Verifies absence of redirect loops by repeating requests and validating stability.
Ensures static assets and API routes remain unaffected during middleware changes.

Quick Start

Run the local dev server and execute the middleware-edge-cases checks against your route map to produce a failing/passing checklist and any required code changes.

Frequently Asked Questions about Middleware Edge Cases

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I test middleware edge cases for auth and routing in Next.js?▼

Test middleware edge cases by enumerating protected and public routes, simulating unauthenticated and authenticated access requests, and verifying correct redirect behavior or denial to produce an audit checklist.

Why does my Next.js middleware create redirect loops?▼

Redirect loops occur when middleware rules continuously bounce requests. Verify redirect loop absence by repeating requests against your route map and validating response stability across local and staging environments.

How can I check if middleware changes affect static assets and API routes?▼

Check static asset and API route interference by running middleware edge case checks against your known route map, verifying static assets and API routes remain unaffected during middleware logic changes.

Does testing auth redirects in middleware require a running dev server?▼

Testing auth redirects requires a running local dev server. Execute middleware edge case checks against your route map to simulate auth states and produce a passing or failing audit checklist.

What is the best way to prevent routing regressions in web middleware?▼

The best way to prevent routing regressions is applying a structured approach to test middleware edge cases, verifying authentication gating, redirect behavior, and consistent access control across routes.