Best practices for Android Unit Testing?

Question

I am developing a mobile android app. What are the most common libraries/frameworks used for Android unit testing? I feel that most of the business logic, database testing, Web services testing can all be done using JUnit.

However, what's the best approach for testing UI, the UI workflow, etc? For example, how can we test if the Android app launches a web browser successfully? Or how can we confirm if buttons, certain things are pressed successfully? Or if images are loaded successfully?

Answer 1

I use JUnit for unit testing and Robolectric for instrumentation tests.

This article shows you a Hello World example with Robolectric

In recent times, I have been researching about integration testing in Android using Arquillian Droidium.

If you want to test some code that consumes a REST API, you can mock it with WireMock. With this library, you can mock REST APIs by code or even deploy a mock HTTP server in your own machine and set up your own mocked mappings.

For REST API mocks, I also recommend you to use Mockable.io.