Add unit tests for the reusable collection view component

[hybridcattt]

Summary

CollectionViewManager is a reusable class that reduces boilerplate when working with collection views.

How does it improve the project?

Collection views power all of the lists in the app. Having some tests verify that the reusable code works as expected is beneficial because it reduces potential for bugs and reduces need for as much manual testing.

Moved from Trello:
https://trello.com/c/WleVagW9/120-add-tests-for-collectionviewmanager

[pastre]

What is the reusable code? I can work on this :)

[hybridcattt]

Hi @pastre, the class in question is this one: https://github.com/Say-Their-Name/say-their-names-ios/blob/development/SayTheirNames/Source/Components/CollectionViewManager/CollectionViewManager.swift

You should probably know that the app is not under active development, but it is live on the App Store.
We are temporarily experiencing issues with the backend right now, but that should be resolved shortly.

You are welcome to contribute and we/I will gladly review your contribution! 🙏

[pastre]

Great! Will be working on it then

[pastre]

@hybridcattt Apparently I don't have the permission to push to this repository. Do I need a fork?

[hybridcattt]

@pastre yeah please create a fork 🙂