# QOwnNotes UI End2End Tests with the help of NixOS
There are now basic End2End tests for QOwnNotes with the help of the NixOS (opens new window) Test System.
The tests will be run automatically when the QOwnNotes packages is updated in the Nix Store (opens new window).
You can look or contribute to the tests at qownnotes.nix (opens new window).
nix-build . -A nixosTests.qownnotes
Text is read via OCR from the screen and tested for validity.