SpaceX - Android sample app

App architecture

The app is written using the MVVM pattern with Dagger2 for DI. Basically the app is composed by a main component (AppComponent) which includes other main modules such us the RetrofitModule, and subcomponents such as the MainComponent module, which again includes its own modules.

App testing

There are few tests settled up in order to check:

• the repo's responses returning the correct model and
• a few main workflow test about the MainViewModel

Work in progress

There are few TODOs in the source code, about UI improvements and so on...

Planning

I've identified these task to be accomplished during the development:

phase	task
phase 0	requirement and services analysis
phase 1	high level architecture plan (which libraries for DI, network, etc...)
phase 2	user journey plan
phase 3	architecture implementation
phase 4	UI implementation
phase 5	viewModel event defined
phase 6	viewModel flow implementation
phase 7	test architecture implementation
phase 8	test network mock
phase 9	test viewModel flow
phase 10	adjust viewModel based on test (custom dispatcher)

Here is my scheduled plan and actual implementation time:

	1h	2h	3h	4h	5h	6h	7h	8h	9h	10h	11h	12h	13h	14h	15h	16h	17h	18h	19h	20h
planned phases	0	1	2	3	3	4	4	5	6	6	7	8	9	9	10	9	10	9
actual phases	0	1	2	3	4	5	6	5	6	6	7	8	9	9	10	9	10	9	9	9

We can notice a few iterations between phases 9 and 10 because I had the need to review few viewModel source code in order to make it more testable.