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

You can do that like this:

val function: Array) -> Unit = {}
val callback = mock(function::class.java)

getCompositons(callback)

verify(callback)(any()) // or for example verifyNoInteractions(callback)

No extra libraries besides the standard mockito are needed