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

Just to enhance riwnodennyk's answer, if your ViewHolder is a ViewGroup instead of a direct View object like TextView, then you can add hasDescendant matcher to match the TextView object in the ViewGroup. Example:

onView(withId(R.id.recycler_view))
    .check(matches(atPosition(0, hasDescendant(withText("First Element")))));

Answer 2

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<RecyclerView.ViewHolder>(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)
}

Answer 3

This thread is pretty old but I recently extended the RecyclerViewAction support to be usable for assertions as well. This allows you to test off-screen elements without specifying a position while still using view matchers.

Check out this article > Better Android RecyclerView Testing!

Answer 4

Danny Roa's solution is awesome, but it didn't work for the off-screen items I had just scrolled to. The fix is replacing this:

View targetView = recyclerView.getChildAt(this.position)
                              .findViewById(this.viewId);

with this:

View targetView = recyclerView.findViewHolderForAdapterPosition(this.position)
                              .itemView.findViewById(this.viewId);

... in the TestUtils class.

Answer 5

I have been struggling on the same issue where I have a recycler view with 6 items and then I have to choose the one at position 5 and the 5th one is not visible on the view.
The above solution also works. Also, I know its a bit late but thought its worth sharing.

I did this with a simple solution as below:

onView(withId(R.id.recylcer_view))
    .perform(RecyclerViewActions.actionOnItem(
         hasDescendant(withText("Text of item you want to scroll to")), 
         click()));

RecyclerViewActions.actionOnItem - Performs a ViewAction on a view matched by viewHolderMatcher.

1. Scroll RecyclerView to the view matched by itemViewMatcher
2. Perform an action on the matched view

More details can be found at : RecyclerViewActions.actionOnItem

Answer 6

Pretty easy. No extra library is needed. Do:

    onView(withId(R.id.recycler_view))
            .check(matches(atPosition(0, withText("Test Text"))));

if your ViewHolder uses ViewGroup, wrap withText() with a hasDescendant() like:

onView(withId(R.id.recycler_view))
                .check(matches(atPosition(0, hasDescendant(withText("Test Text")))));

with method you may put into your Utils class.

public static Matcher<View> atPosition(final int position, @NonNull final Matcher<View> itemMatcher) {
    checkNotNull(itemMatcher);
    return new BoundedMatcher<View, RecyclerView>(RecyclerView.class) {
        @Override
        public void describeTo(Description description) {
            description.appendText("has item at position " + position + ": ");
            itemMatcher.describeTo(description);
        }

        @Override
        protected boolean matchesSafely(final RecyclerView view) {
            RecyclerView.ViewHolder viewHolder = view.findViewHolderForAdapterPosition(position);
            if (viewHolder == null) {
                // has no item on such position
                return false;
            }
            return itemMatcher.matches(viewHolder.itemView);
        }
    };
}

If your item may be not visible on the screen at first, then scroll to it before:

    onView(withId(R.id.recycler_view))
            .perform(scrollToPosition(87))
            .check(matches(atPosition(87, withText("Test Text"))));