final int zIdx = extraFieldNames.indexOf("zzz_field");
        assertTrue(aIdx < mIdx);
        assertTrue(mIdx < zIdx);
    }

    @Test
    public void test_registerExtraFields_nullDoc_showsConfigFields() throws Exception {
        final AdminSearchlistAction action = new AdminSearchlistAction();

        final CreateForm form = new CreateForm();
        form.doc = null;