select item in NavigationView with Espresso

Issue

I have this piece of code

 private void setupDrawerLayout() {
    navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
        @Override
        public boolean onNavigationItemSelected(MenuItem menuItem) {

            final int itemId = menuItem.getItemId();

            switch (itemId) {
                case R.id.drawer_my_mixes:
                    replaceFragment(MyMixesFragment.newInstance());
                    drawerLayout.closeDrawers();
                    break;
                   and so on...

I want to make espresso to click R.id.drawer_settings which will basically open a fragment called SettingsFragment. How do I do this? I tried this with no success

private ViewInteraction navigateToSettings(){
    openActionBarOverflowOrOptionsMenu(getInstrumentation().getTargetContext());
    return onView(withText("Settings")).perform(click());

}

Solution

The correct way would be to use the onData function of Espresso.

onData(allOf(is(instanceOf(NavigationMenuItem.class)), ... )).perform(click());

But NavigationMenuItem isn't accessible since it is a private nested class.

An issue is pending https://code.google.com/p/android/issues/detail?id=187701 to find a solution on it. Go add a star to it ;-)

Answered By - Pol