I know I read the answer somewhere, but how can I mock a method like `fun updateParticipant(particip...

# mockk

[thanksforallthefish]

I know I read the answer somewhere, but how can I mock a method like fun updateParticipant(participant: Participant, update: Participant.() -> Unit)?

I am trying with

val participantOrchestrationService: ParticipantOrchestrationService = mockk(relaxed = true)
val dummy = Participant()
val update = slot<Participant.() -> Unit>()
every { participantOrchestrationService.updateParticipant(dummy) { capture(update) } } just Runs
update.captured(dummy)
dummy should {
	it.state == State.inactive
}

but getting kotlin.UninitializedPropertyAccessException: lateinit property captured has not been initialized

any suggestion?

[thanksforallthefish]

I went on with every { participantOrchestrationService.updateParticipant(dummy, captureLambda()) } answers { lambda<Participant.() -> Unit>().invoke(dummy) } instead of the original every block (and remove update

[oleksiyp]

Can you please put the code to gist? It is very hard to read

[thanksforallthefish]

thanks for the feedback. While creating a gist with a smaller example, I actually found the problem and it was in my code. the signature of updateParticipant is fun updateParticipant(participant: Participant, update: Participant.() -> Unit = {}) : Unit

the every block should be every { participantOrchestrationService.updateParticipant(dummy, capture(update)) } just Runs, having capture in a lambda itself satisfied the compiler, but ofc the capturing itself never run. It was kinda of a dummy mistake.

sorry for wasting your time

[oleksiyp]

Nws