• Building Test FAKES for any class
  
  • Do not mistake this for mocks. That is something different.
• Custom AndroidJUnitTestRunner
  
• ActivityScenario
• ActivityScenarioRule
• Types of Mocking and test fakes:
  
  1. Dagger Components
  2. Dagger Modules
  3. Application class
  4. Fragment Factory
  5. Glide ImageLoader
  6. Retrofit network requests
• Navigation Components:
  
  • Testing navigation (both fragments in isolation and end to end testing)
  • Navigation Testing Artifact
• Glide (Setting images in test)
• RecyclerView Testing:
  
  • Scrolling and list item verification
  • Clicking items to trigger event
• Stubbing a Test Data Source (Network)
• End-to-end tests with ActivityScenario
• Isolation tests with FragmentScenario
• Configuration changes (activity/fragment recreation)
• Test assets for providing fake network data
• Test Orchestrator:
  
  • Each test runs in its own Instrumentation instance (no/minimal shared state!)

Watch the video course here: UI Testing with Jetpack and AndroidX.

1. @R4md4c