How to assert inside a RecyclerView in Espresso?

Question

I am using espresso-contrib to perform actions on a RecyclerView, and it works as it should, ex:

onView(withId(R.id.recycler_view))
.perform(Rec         


        

Answer 1

In my case, it was necessary to merge Danny Roa's and riwnodennyk's solution:

onView(withId(R.id.recyclerview))
.perform(RecyclerViewActions.scrollToPosition(80))
.check(matches(atPositionOnView(80, withText("Test Test"), R.id.targetview)));

and the method :

public static Matcher atPositionOnView(final int position, final Matcher itemMatcher,
        @NonNull final int targetViewId) {

    return new BoundedMatcher(RecyclerView.class) {
        @Override
        public void describeTo(Description description) {
            description.appendText("has view id " + itemMatcher + " at position " + position);
        }

        @Override
        public boolean matchesSafely(final RecyclerView recyclerView) {
            RecyclerView.ViewHolder viewHolder = recyclerView.findViewHolderForAdapterPosition(position);
            View targetView = viewHolder.itemView.findViewById(targetViewId);
            return itemMatcher.matches(targetView);
        }
    };
}