### Question:
GatewayFlowRuleController { @PostMapping("/delete.json") public Result<Long> deleteFlowRule(HttpServletRequest request, Long id) { AuthService.AuthUser authUser = authService.getAuthUser(request); if (id == null) { return Result.ofFail(-1, "id can't be null"); } GatewayFlowRuleEntity oldEntity = repository.findById(id); if (oldEntity == null) { return Result.ofSuccess(null); } authUser.authTarget(oldEntity.getApp(), AuthService.PrivilegeType.DELETE_RULE); try { repository.delete(id); } catch (Throwable throwable) { logger.error("delete gateway flow rule error:", throwable); return Result.ofThrowable(-1, throwable); } if (!publishRules(oldEntity.getApp(), oldEntity.getIp(), oldEntity.getPort())) { logger.warn("publish gateway flow rules fail after delete"); } return Result.ofSuccess(id); }  @GetMapping("/list.json") Result<List<GatewayFlowRuleEntity>> queryFlowRules(HttpServletRequest request, String app, String ip, Integer port); @PostMapping("/new.json") Result<GatewayFlowRuleEntity> addFlowRule(HttpServletRequest request, @RequestBody AddFlowRuleReqVo reqVo); @PostMapping("/save.json") Result<GatewayFlowRuleEntity> updateFlowRule(HttpServletRequest request, @RequestBody UpdateFlowRuleReqVo reqVo); @PostMapping("/delete.json") Result<Long> deleteFlowRule(HttpServletRequest request, Long id);  }### Answer:
@Test public void testDeleteFlowRule() throws Exception { String path = "/gateway/flow/delete.json"; GatewayFlowRuleEntity addEntity = new GatewayFlowRuleEntity(); addEntity.setId(1L); addEntity.setApp(TEST_APP); addEntity.setIp(TEST_IP); addEntity.setPort(TEST_PORT); addEntity.setResource("httpbin_route"); addEntity.setResourceMode(RESOURCE_MODE_ROUTE_ID); addEntity.setGrade(FLOW_GRADE_QPS); addEntity.setCount(5D); addEntity.setInterval(30L); addEntity.setIntervalUnit(GatewayFlowRuleEntity.INTERVAL_UNIT_SECOND); addEntity.setControlBehavior(CONTROL_BEHAVIOR_DEFAULT); addEntity.setBurst(0); addEntity.setMaxQueueingTimeoutMs(0); Date date = new Date(); date = DateUtils.addSeconds(date, -1); addEntity.setGmtCreate(date); addEntity.setGmtModified(date); GatewayParamFlowItemEntity addItemEntity = new GatewayParamFlowItemEntity(); addEntity.setParamItem(addItemEntity); addItemEntity.setParseStrategy(PARAM_PARSE_STRATEGY_CLIENT_IP); repository.save(addEntity); given(sentinelApiClient.modifyGatewayFlowRules(eq(TEST_APP), eq(TEST_IP), eq(TEST_PORT), any())).willReturn(true); MockHttpServletRequestBuilder requestBuilder = MockMvcRequestBuilders.post(path); requestBuilder.param("id", String.valueOf(addEntity.getId())); MvcResult mvcResult = mockMvc.perform(requestBuilder) .andExpect(MockMvcResultMatchers.status().isOk()).andDo(MockMvcResultHandlers.print()).andReturn(); verify(sentinelApiClient).modifyGatewayFlowRules(eq(TEST_APP), eq(TEST_IP), eq(TEST_PORT), any()); Result<Long> result = JSONObject.parseObject(mvcResult.getResponse().getContentAsString(), new TypeReference<Result<Long>>() {}); assertTrue(result.isSuccess()); assertEquals(addEntity.getId(), result.getData()); List<GatewayFlowRuleEntity> entitiesInMem = repository.findAllByApp(TEST_APP); assertEquals(0, entitiesInMem.size()); }