Espresso Intents is a great way to do hermetic inter app testing. It works essentially like mockito and allows for Intent verification and stubbing. This sample shows how to stub an Intent and simulate that a picture is fetched from the camera without leaving the main app.
This project uses the Gradle build system. You don't need an IDE to build and execute it but Android Studio is recommended.
The application will be started on the device/emulator and a series of actions will be performed automatically.
If you are using Android Studio, the Run window will show the test results.
compile 'com.android.support:support-annotations:' + rootProject.supportLibVersion;
Captures an image and displays a thumbnail of the result.