### Question:
WxCpUserServiceImpl implements WxCpUserService { @Override public void authenticate(String userId) throws WxErrorException { String url = "https: this.mainService.get(url, null); } WxCpUserServiceImpl(WxCpService mainService); @Override void authenticate(String userId); @Override void create(WxCpUser user); @Override void update(WxCpUser user); @Override void delete(String... userIds); @Override WxCpUser getById(String userid); @Override List<WxCpUser> listByDepartment(Integer departId, Boolean fetchChild, Integer status); @Override List<WxCpUser> listSimpleByDepartment(Integer departId, Boolean fetchChild, Integer status); @Override WxCpInviteResult invite(List<String> userIds, List<String> partyIds, List<String> tagIds); @Override Map<String, String> userId2Openid(String userId, Integer agentId); @Override String openid2UserId(String openid);  }### Answer:
@Test public void testAuthenticate() throws Exception { this.wxCpService.getUserService().authenticate("abc"); }