Robolectric 3 With Fabric Crashlytics

I am trying to ShadowClass Crashlytics/Fabric so that Robotlectric 3 tests do not fail. What I have so far is this: The custom test runner that adds the Shadow class for Fabric: p

Solution 1:

This is my usual advice how to write a test against something not testable.

Extract you Fabric initialisation to protected method:

publicclass <MyApplicationName> {

publicvoidonCreate() {
   initFabric();
}

@VisibileForTesting
voidinitFabric() {
....
}
}

Create Test<MayApplicationName> class in test sources (same package and override Fabric initialisation:

publicclassTest<MyApplicationName> {
voidinitFabric() {
//nothing to do
}
}

Everywhere where you need using Fabric use DI (Dependency Injection) to mock Fabric in tests. Even more, I would suggest you create Analytics/Crash/Distribution class and hide Fabric usage from entire application.

And final you have left classes that wrap/hide the Fabric. Here you can write a custom shadow, spy on the real object or leave it untested. And you already tried to write custom shadow without success, also, spying is not an option here.

Happy coding!