Testing
NextAuth.js v5 Testing: Auth.js Patterns, Session Mocking, and Provider Testing
NextAuth.js v5 (now called Auth.js) is a significant rewrite that embraces Next.js App Router and Edge runtime. Testing Auth.js v5 apps is different from v4 — there's no more getServerSideProps, sessions are handled via auth() from the server, and the middleware approach changed. This guide