[4226] Uzytkownicy.

https://gist.github.com/lukkolstx/440b6ae2ba129e9da598
Fixed. Please review.
This throws an error :suspect: but in real life this would be mocked. So quickly read [this](https://bradmontgomery.net/blog/2013/03/15/how-world-do-you-mock-name-attribute/) so you would know generally what mock are and remove this test.