How to mock lambda with mockito in kotlin

Question

I have a kotlin Android app. There is a function that loads compositions from the backend and returns them to a callback:

getCompositons(callback: (Array<         


        

Answer 1

This is really no different to mocking any other type:

val callback = mock<(Array) -> Unit>()

getCompositons(callback)

verify(callback)(any())  // Or verify(callback).invoke(any()) to be explicit

(In case you weren't aware of them, I'm using the mockito-kotlin bindings here.)