    @Test
    public void role() {


        assertNull(Helper.getRole(identityManager, "bottle washer"));

        Role admin = new Role("admin");
        Role manager = new Role("manager");
        Role user = new Role("user");

        identityManager.add(admin);
        identityManager.add(manager);
        identityManager.add(user);

        assertEquals("admin", admin, Helper.getRole(identityManager, "admin"));
        assertEquals("manager", manager, Helper.getRole(identityManager, "manager"));
        assertEquals("user", user, Helper.getRole(identityManager, "user"));
    }