Libraries & Solutions used:

• Architecture: MVVM
• MVVM Framework: Android Architecture Components
• Database: Room
• Mulithreading: Kotlin Couroutines
• Dependency injection: Koin
• Unit tests: mockito-kotlin2
• Android Instrumental tests: Espresso + Kakao + mockito-kotlin2

Key components description:

Data package:

• main
  • All models

Datasource package

• main
  • All repositories
  • All room database related code
  • All API related initialization code
• test
  • Unit tests for some repositories
• androidTest
  • AndroidJUnit tests for untested by JUnit repositories
  • AndroidJUnit tests for room db
  • AndroidJUnit tests for Http client Interceptor

Dependency injection [DI] package

• main
  • Koin modules definition related code
• test
  • Koin modules definition Unit tests

Domain.UseCase package

• main
  • All use cases
• test
  • Some use cases JUnit tests
• androidTest
  • AndroidJUnit tests for the rest of untested by JUnit use cases

Extensions package

• main
  • Kotlin extensions code
• androidTest
  • AndroidJUnit for some extensions

Presentaion package

• main
  • All UI related code + ViewModels
• test
  • JUnit tests for ViewModels
• androidTest
  • Espresso+ Kakao tests for Activities and Fragments