Lesson 913 of 2116
Test With Three Fake Users
Most permission bugs appear only when you create User A, User B, and Admin and try to cross the wires. Write the smallest useful scope the agent can finish.
Lesson map
What this lesson covers
Learning path
The main moves in order
- 1Test With Three Fake Users
- 2testing
- 3roles
- 4permissions
Concept cluster
Terms to connect while reading
Section 1
Test With Three Fake Users
Most permission bugs appear only when you create User A, User B, and Admin and try to cross the wires.
- 1Name the job before naming the tool.
- 2Write the smallest useful scope the agent can finish.
- 3Run the result as a user, not as a fan of the tool.
- 4Inspect the diff, data access, and failure path before sharing.
Use this as the working prompt or checklist for the lesson.
Create three test users: owner, staff, customer. Try to view each other's data, edit each other's records, and open admin routes. Fix every place the wrong user succeeds.- What should the user be able to do when this is finished?
- What data should the app or agent never expose?
- What test proves the change works?
- What rollback path exists if the output is wrong?
Key terms in this lesson
End-of-lesson quiz
Check what stuck
15 questions · Score saves to your progress.
Tutor
Curious about “Test With Three Fake Users”?
Ask anything about this lesson. I’ll answer using just what you’re reading — short, friendly, grounded.
Progress saved locally in this browser. Sign in to sync across devices.
Related lessons
Keep going
Creators · 14 min
Auth Is Not A Login Button
Real auth includes roles, redirects, protected routes, empty states, password resets, and what users can do after signing in. Write the smallest useful scope the agent can finish.
Creators · 14 min
Threat Model The Feature
Before shipping user management, payments, uploads, or AI tools, ask who could abuse it and what they could steal or break.
Explorers · 40 min
How AI Helps Make Sure Code Actually Works
AI can write 'tests' — little checks that make sure your code does what you want.