Android espresso test NavigationView

Issue

I am writing some espressotests for an appplication I recently made. I'm using a NavigationView inside a DrawerLayout as sliding menu.

I managed to open the drawer this way:

        onView(withId(R.id.drawer_layout)).perform(open());

This works so now I am trying to perform a click on a menuitem in the NavigationView.

onView(withId(R.id.nav_register))..

can not find the view. I tried several things but I can't find a way to retrieve the menuitem view. This is the way the items are assigned in the code:

    <android.support.design.widget.NavigationView
    android:id="@+id/nav_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:fitsSystemWindows="true"
    app:headerLayout="@layout/nav_header_main"
    app:menu="@menu/activity_main_drawer" />

and activity_main_drawer.xml

<group android:checkableBehavior="single">
    <item
        android:id="@+id/nav_home"
        android:icon="@drawable/ic_menu_home"
        android:title="Home" />
    <item
        android:id="@+id/nav_register"
        android:icon="@drawable/ic_menu_register"
        android:title="Registreer" />
    <item
        android:id="@+id/nav_login"
        android:icon="@drawable/ic_menu_login"
        android:title="Log in" />
    <item
        android:id="@+id/nav_play"
        android:icon="@drawable/ic_menu_play"
        android:title="Speel sessie" />
    <item
        android:id="@+id/nav_logout"
        android:icon="@drawable/ic_menu_logout"
        android:title="Log uit" />
</group>

I read something about NavigationViewMenuItem is a private member and not accessible. Can someone help me out?

Greets! Shenno

Solution

Actually, the View representing the menu item doesn't know the id of the menu item in Android. As a result the method withId() doesn't work in Espresso with menu items specifically. I suggest you use the withText method:

onView(withText("the item title")).

Answered By - Coralie B