Atlas › 14 API Testing Fundamentals › Authentication Testing☰ Read as one page
Authentication Testing
4.1OverviewAuthentication is the gatekeeper of your API. Testing it thoroughly means verifying not just that valid credentials work, but that invalid…4.2Authentication Methods4.3Testing Each Method4.4Authorization Testing (RBAC)Authentication verifies identity. Authorization verifies permissions. Test that users can only access what their role allows.4.5Security Checks4.6Practical Exercise1. Write tests for a login flow: valid credentials, invalid password, invalid email, empty fields 2. Test JWT lifecycle: obtain token, use…4.7Key Takeaways- Test every auth method: valid, missing, invalid, expired, and tampered credentials - JWT tests should cover expiration, tampering, and…