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

Modified matcher solution for when you check if your item(Text in TextView) is first in RecyclerView.

// True if first item in the RV and input text
fun  customMatcherForFirstItem(name: String, matcher: Matcher): Matcher {
    return object: BaseMatcher () {
        var isFirst = true
        override fun matches(item: Any): Boolean {
            if (isFirst && (item as TextView).text == name) {
                isFirst = false
                return true
            }
            return false
        }
        override fun describeTo(description: Description?) {}
    }
}

Usage: (returns true if child textview in the item has the same text as we expect/search)

    onView(withText("TEXT_VIEW_TEXT")).check(matches(
        customMatcherForFirstItem("TEXT_VIEW_TEXT", withParent(withId(R.id.recycler_view)))))

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Based on -> https://proandroiddev.com/working-with-recycler-views-in-espresso-tests-6da21495182c