Scalable Design : Your Next Unicorn iOS App

This article intends to give the testable start-off point for ios-devs trying to ship their very first app to App Store.

What : List of latest news to be pulled from news-api, parsed and shown as a list on home screen of the iOS app. App Code should be written in a way, making it mostly testable by writing unit test with XCTest framework.

How : I have used MVVM for structuring the code paired with unit tests written via XCTest.

High Level Design Code:

“HLD”

1. HomeViewController : Class consisting of UI part of the app.

“HomeViewController”

2. HomeViewModel: Class to provide all the data HomeViewContoller or view from models.

“HomeViewModel”

3. HomeAPIManager: Class to fetch news from news-api end points

“HomeAPIManager”

4. News: Model for the News item from news-api response.

“News”

5. NewServices: Protocol to fetch news from news-api end points.

“NewsService”

6. HomeViewModelDelegate: Delegate to send across info from ViewModel to HomeVC.

“HomeViewModelDelegate”

Test High Level Design :

1. MockHomeAPIManager:

“MockHomeAPIManager”

1. MockHomeViewDelegateImplementation:

“MockHomeViewDelegateImplementation”

1. HomeViewDeleegateTests:

“HomeViewDeleegateTests”

Here is the GitHub link for the repo.

GitHub - therahulgoel/theunicornapp: This repo intends to give the scalable/testable start-off…

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