Hi! I am using Mockk and I am trying to build a generalized interface. My code:

interface Captor<T> {
  val captor: CapturingSlot<T>
}

Mockk's class deinition:

class CapturingSlot<T : Any>()

Yet, I am getting Type argument is not within its bounds. Expected: Any. Found: T Can anyone point me in the right direction?

have you tried just bounding your Captor’s type parameter?

@Shawn Thanks! I am obviously missing smth but my goal was to have

CapturingSlot<T>

and just pass a type to an interface. Yet,

CapturingSlot<T>

gives me

Type argument is not within its bounds. Expected: Any. Found: T

and I am a bit confused because explicit types all work, e.g.

CapturingSlot<String>

or any other type is ok

It’s because by default

T

has a bound of

Any?

I got it! Sorry for being slow. Thank you so much for your help, it works exactly as I wanted!

no worries! this is something about the type system that isn’t terribly obvious