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

I combined a few answers above into a reusable method for testing other recycler views as the project grows. Leaving the code here in the event it helps anyone else out...

Declare a function that may be called on a RecyclerView Resource ID:

fun Int.shouldHaveTextAtPosition(text:String, position: Int) {
    onView(withId(this))
        .perform(scrollToPosition(position))
        .check(matches(atPosition(position, hasDescendant(withText(text)))))
}

Then call it on your recycler view to check the text displayed of multiple adapter items in the list at a given position by doing:

with(R.id.recycler_view_id) {
    shouldHaveTextAtPosition("Some Text at position 0", 0)
    shouldHaveTextAtPosition("Some Text at position 1", 1)
    shouldHaveTextAtPosition("Some Text at position 2", 2)
    shouldHaveTextAtPosition("Some Text at position 3", 3)
}