Effective Android Testing for Mobile Developers

Explore effective testing techniques for Android by walking through an app development workflow where testing is integrated throughout the process.

Introduction

• Welcome
• What you should know
• Using the exercise files

1. Testing Considerations

• Why test?
• Types of tests
• Local vs. on-device

2. Test as You Go

• The sample app
• Smallest unit first
• TDD: Red, Green, Refactor, part 1
• TDD: Red, Green, Refactor, part 2
• Code coverage
• UI-less on-device test: RecipeStore
• UI-less on-device test: Setup
• UI-less on-device test: Null test
• UI-less on-device test: Count test
• UI-less on-device test: Lookup test

3. UI Testing

• RecyclerView
• Showing Recipes in MainActivity
• RecipeActivity: Layout
• RecipeAdapter: OnClickListener
• RecipeActivity: Loading a recipe
• Vector drawable: Create
• Vector drawable: Use
• SharedPreferencesFavorites
• Favorite: OnClickListener
• RecipeActivityTest: An espresso test

4. Hermetic Environment

• Test doubles
• Dependency injection
• InMemoryFavorites
• RecipeApplication
• TestRecipeApplication
• CustomTestRunner
• Test state: Setup
• Test state: Test

5. Robot Pattern

• What vs. How
• ScreenRobot
• RecipeRobot
• Clear favorites
• Separation of concerns

6. Model-View-Presenter

• Introduction
• View Interface and Presenter
• Refactor: Load recipe
• Refactor: Show error
• Refactor: Show recipe
• Refactor: Toggle favorite
• Mockito: Intro
• Mockito: Setup
• Testing with MVP: recipeNotFound()
• Testing with MVP: Exception
• Testing with MVP: ArgumentCaptor
• Summary

Conclusion

• Next steps