Testing in Android

A presentation on Testing in Android presented at the Mobile developer summit 2016.

Transcript

1. Testing in Android Soham Mondal Founder, Triveous
2. About me - Founder, Triveous - Creator, Voice Recorder - Google Expert: UX - Android/UX consultant - Organizer at Blrdroid - Mentor at the Google Launchpad Accelerator
3. Agenda • Android architecture: MVP/MVVM/MVC? • What is Testing? Testing principles • Types of Tests • Unit testing • Demo: Unit Testing • Instrumentation Testing • Demo: Instrumentation testing • Continuous Integration
4. Android Architecture • MVC: Model View Controller • MVP: Model View Presenter • MVVM: Model View ViewModel • Clean Architecture by UncleBob
5. Clean Architecture • Framework • Slaves of the Framework • Separate business logic from Framework • Activities/Fragments • Entanglement • Impacts Portability/Maintainability/Clarity of the solution
6. MVP • Presenter • Injecting presenter into Views • Can unit test the presenter http://hannesdorfmann.com/mosby/mvp/
7. TESTING Testing helps create great, stable, maintainable and scalable apps
8. Testing Principles • Clean architecture • Understand what you’re trying to test • Isolation • Integration • All possible scenarios • TDD
9. Type of Tests • Unit tests • Integration tests • End to end tests (Instrumentation tests) http://googletesting.blogspot.in/2015/04/just-say-no-to-more-end-to-end-tests.html
10. Objective of Unit Testing? • Just the core functionality/business logic • No external dependencies • Quick and predictable • All possible scenarios • TDD
11. Unit Testing • Options: Roboelectric, JUnit • Unit testing on android studio • Mockito • PowerMock
12. Mockito -@mock -when/thenReturn -@spy -verify -@ArgumentCaptor
13. UNIT TEST DEMO
14. Objective: What are you testing? • End to end functionality • UI • External dependencies • Longer • Flaky
15. Instrumentation tests • Options: Robotium, Espresso • Why is espresso generally better? • Espresso test recorder in android studio • Support for firebase test lab
18. ESPRESSO DEMO
19. More Espresso • Espresso-Intents and Intent Stubbing • Espresso-Contrib for DatePicker, RecyclerView, Drawer actions, Accessibility checks, CountingIdlingResource • Idling resources • Code coverage
20. CONTINUOUS INTEGRATION
21. CI • Jenkins • Travis/Circle CI/others • Integration with github and others • Automated reporting: Email/Update slack • Deploy to play store