Android Espresso 2.0 stuck on clicking gridview item

Question

I want to create Espresso tests for my Android app. I have a StaggeredGridView (StaggeredGridView Github ) with lots of grid items (~1000) made of custom models (Recipe.class)

<com.etsy.android.grid.StaggeredGridView xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/mainPageGridView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:contentDescription="main_grid"
        android:descendantFocusability="blocksDescendants"
        app:column_count="2"
        app:item_margin="8dp">

    </com.etsy.android.grid.StaggeredGridView>

The grid items are a simple LinearLayout with Image and TextView.

The problem is when I want to click on an element which is not visible on screen then the Espresso stucks and not scroll to it to perfom an action.

I've tried the following (if I change the position to 1, then it works fine):

onData(anything()).inAdapterView(withId(R.id.mainPageGridView))
            .atPosition(5)
            .perform(click());

And tried this:

onData(anything()).inAdapterView(withId(R.id.mainPageGridView))
            .atPosition(5)
            .perform(scrollTo(), click());

Is it a bug, or am I missing some params?

Answer 1

It works for me:

onData(anything()).inAdapterView(withId(R.id.main_drawerGridView)).atPosition(0).perform(click());