Hello all, is there any way to test a

RecyclerView.Adapter

on a local VM? I have mocked some stuff but I'm getting a NPE when

notifyDataSetChanged

gets called

http://robolectric.org/ although it’s probably easier to extract the logic to a plain java class that doesn’t have any dependencies on android stuff

I want to test diffing and itemCount and stuff which are specific to the adapter

oo my itemCount method is usually as simple as

items.size()

although nowadays I tend to use groupie which handles that for you

You don't use

ListAdapter

then?

DiffUtil is not heavily coupled with android, there's actually only one method that takes an adapter that prevents it from being in an Android-free .jar library. I somewhat regret we didn't move DiffUtil to a separate package with the androidx refactor, to help us eventually move it to a .jar library on its own.

Yea, sorry about the "heavily". Theres just that one class which obliges me to use a non-mocked android.jar