Espresso - Check RecyclerView items are ordered correctly

Question

How to go about checking whether RecyclerView items are displayed in the correct order using Espresso? I\'m trying to test it checking it by the text for the title of each e

Answer 1

I simplified a bit Mosius answer:

public static Matcher hasItemAtPosition(final Matcher matcher, final int position) {
    return new BoundedMatcher(RecyclerView.class) {
        @Override
        public void describeTo(Description description) {
            description.appendText("has item at position " + position + ": ");
            matcher.describeTo(description);
        }
        @Override
        protected boolean matchesSafely(RecyclerView recyclerView) {
            RecyclerView.ViewHolder viewHolder = recyclerView.findViewHolderForAdapterPosition(position);
            return matcher.matches(viewHolder.itemView);
        }
    };
}

We pass Matcher to the function so we can provide further conditions. Example usage:

onView(hasItemAtPosition(hasDescendant(withText("Item 1")), 0)).check(matches(isDisplayed()));
onView(hasItemAtPosition(hasDescendant(withText("Item 2")), 1)).check(matches(isDisplayed()));