Android: All about testing

How to structure MVP for testing?

• View
  • displays the data and communicates user actions to the Presenter
  • listens to user interaction and passes it to the Presenter
• Presenter should not know anything about Android based (Context, Activity, Toast, Intent, startActivity…)
  • decides what to do with logic inside the listener
  • gathers data from the model
  • tells View what to displays

How to setup JUnit

• Set the Project explorer (left hand window) to display ‘Project’ mode. Tap the little drop-down at the top left and select ‘Project’
• Right click the ‘src’ directory, ‘New -> Directory’.Call new directory androidTest
• Right click androidTest and add a ‘java’ directory. It will appear in green (indicating it’s a test src directory)
• Now right-click again and add a package, e.g. com.mycompany.myapp.tests
• Add a new class that extends AndroidTestCase

How to setup Expresso

Test file can’t be in the same folder with JUnit Test. They must be in Application Test