Tezt: internal...

Visible state

1. vorm title (on olemas, teksiga)
2. Demo string (on olemas, teksiga)
3. kasutaja input (on olemas, placeholderiga, tyhi)
4. parool input (on olemas, placeholderiga, tyhi, parooli tyyp)
5. button (on olemas, teksiga, aktiivne, sinine)

Incorrect input

1. tyhi kasutaja (tip should appear)
2. tyhi parool (tip should appear)
3. 1 + 2

Correct input

1. Sign in should log user in