Set<UserResponse> responses = controller.getUsers(
Collections.singleton(new UserRequest(null)));
Assert.assertEquals(0, responses.size());
RoleDAO roleDao = injector.getInstance(RoleDAO.class);
RoleEntity re1 = roleDao.findByName("user");
RoleEntity re2 = roleDao.findByName("admin");
Assert.assertNotNull(re1);
Assert.assertNotNull(re2);
}