Supabase
Row Level Security is one of Supabase's most powerful features — and one of the most dangerous to get wrong. A misconfigured RLS policy can silently expose every row in a table to every authenticated user, or lock out legitimate access entirely. Neither failure is obvious until something goes
Supabase
Supabase Realtime sits on top of Phoenix Channels over WebSocket. Testing it means dealing with asynchronous event delivery, connection lifecycle (SUBSCRIBED, CHANNEL_ERROR, CLOSED), and timing-sensitive state — exactly the conditions that produce flaky tests. This guide covers unit testing with a mocked Realtime client, integration testing postgres_changes events
Supabase
Supabase Edge Functions run on Deno Deploy — a V8-isolate runtime that is fast to cold-start and strict about permissions. Testing them requires understanding three distinct layers: unit tests for your business logic, integration tests against a local Supabase instance, and end-to-end tests that hit the deployed
Supabase
Supabase Auth combines JWT issuance, session management, email confirmation, OAuth, and Row Level Security into a single system. Testing each layer in isolation — and then together — catches bugs that only appear at the boundaries. This guide covers unit testing with mocked supabase-js, integration testing against a local Supabase instance,