Forms & validation · level 1 of 5 · Nimbus
A test that only checks the happy path cannot tell a working login from one that lets anybody in.
Write tests for the Nimbus login page (demo@nimbus.app / secure123).
Your suite must prove both of these:
The second one is the point. A suite that only tests the happy path passes just as well against a login that accepts any password, and that is a security bug shipping to production.
We break each one in a copy of the app. Your test has to fail on every copy.