Integration vs Unit test

[Anthony17serrato]

Current test cases for classes which depend on use case are all integration tests(using real use case implementation). Can we get unit test examples, I am assuming an interface needs to be extracted to enable test fakes. https://github.com/android/nowinandroid/blob/c5b604f72e096b355aae145dd96791972431eec6/feature/foryou/src/test/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/ForYouViewModelTest.kt#L70