Testing home button

TheCustomerSearchFragment.java

@Test
    public void homeButtonHidesKeyboard() {
        final MenuItem item = mock(MenuItem.class);
        when(item.getItemId()).thenReturn(android.R.id.home);

        testedFragment.onOptionsItemSelected(item);

        verify(keyboardHackerMock).hideKeyboardAndResetBottomPaddingFor(any(View.class));
    }