react-native-test-sandbox

Exploring the ease of testing given conventional React architecture patterns, vs MVC style decoupling, vs some other patterns.

Basic Features

The basic features to implement for each architecture will be:

1. List View
2. Add New Item View
3. Edit View

Architecture Patterns

• Conventional React patterns
  • use react-query, and other hooks directly in the rendered component
  • No HOC or dependency injection to decouple view layer from business logic
• MVC
  • React controller component that only returns view layer, supplying all necessary data and callbacks via props
  • Utilize a state machine (xstate or something like it) to manage UI state changes and return them back to the view layer

Testing

Tests will take the form of integration, and unit tests Integration Tests might include:

• Testing screens as a whole
• Testing navigation behavior between screens
• Gherkin tests driven by Detox or Appium to verify correctness with mocked api (this could be considered e2e if the api was involved)

Unit Tests might include:

• Testing individual low-level UI components
• Testing pure domain or business logic functions