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Supabase Backend as a Service · Lesson

Testing and Debugging RLS

Learn strategies for effectively testing your RLS policies to ensure they behave as expected and debug any access issues.

Why Test RLS Policies?

Row-Level Security (RLS) is powerful, but tricky. It controls who sees and modifies data directly at the database level. A small mistake can expose sensitive information or block legitimate users.

  • Security Assurance: Confirm sensitive data is protected.
  • Functionality: Ensure users can access what they need.
  • Prevent Bugs: Catch unintended access issues early.

Testing RLS is crucial for a secure and functional application.

Two Main Testing Approaches

You can test your RLS policies using two primary methods:

  • SQL Editor (Database Level): Directly interact with your database using SQL, impersonating different users. This is great for isolated testing.
  • Client-Side (Application Level): Test through your application's frontend or backend code, making authenticated API requests. This validates the entire flow.

Both methods offer unique insights into how your RLS policies behave.

All lessons in this course

  1. Introduction to RLS Policies
  2. Testing and Debugging RLS
  3. Role-Based Access with RLS and Custom Claims
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