Write unit tests for CodingCalendarRepository

[dr0pdb]

We need to add unit tests to test the functionality of the Coding Calendar Repository.

[paynemiller92]

I'll tackle this one.

[dr0pdb]

Hi @paynemiller92, Yeah please go ahead. In case you need some sort of reference, you should be able to find them here: https://github.com/fossasia/open-event-orga-app/tree/development/app/src/test/java/com/eventyay/organizer/data/repository

[NyorJa]

Got to try this item