@Test
    public void list_Scrolls() {
        onRow(LAST_ITEM_ID).check(matches(isCompletelyDisplayed()));
    }
Check that the item is created. onData() takes care of scrolling.
ui/espresso/DataAdapterSample/app/src/sharedTest/java/com/example/android/testing/espresso/DataAdapterSample/LongListActivityTest.java