content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.alibaba.nacos.prometheus.controller.exception;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.exception.runtime.NacosRuntimeException;
  import com.alibaba.nacos.core.listener.startup.NacosStartUp;
  import com.alibaba.nacos.core.listener.startup.NacosStartUpManager;
  import com.alibaba.nacos.prometheus.controller.PrometheusController;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
  import org.springframework.test.context.bean.override.mockito.MockitoBean;
  import org.springframework.test.web.servlet.MockMvc;
  import org.springframework.test.web.servlet.ResultActions;
  import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
  import org.springframework.test.web.servlet.setup.MockMvcBuilders;
  import org.springframework.web.context.WebApplicationContext;
  
  import static org.mockito.Mockito.when;
  import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
  
  @WebMvcTest(PrometheusApiExceptionHandlerTest.class)
  public class PrometheusApiExceptionHandlerTest {
      
      private MockMvc mockMvc;
      
      @Autowired
      private WebApplicationContext context;
      
      @MockitoBean
      private PrometheusController prometheusController;
      
      @BeforeAll
      public static void init() {
          NacosStartUpManager.start(NacosStartUp.CORE_START_UP_PHASE);
      }
      
      @BeforeEach
      public void before() {
          mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
      }
      
      @Test
      public void testNacosRunTimeExceptionHandler() throws Exception {
          // 设置PrometheusController的行为，使其抛出NacosRuntimeException并被PrometheusApiExceptionHandler捕获处理
          when(prometheusController.metric()).thenThrow(new NacosRuntimeException(NacosException.INVALID_PARAM))
                  .thenThrow(new NacosRuntimeException(NacosException.SERVER_ERROR))
                  .thenThrow(new NacosRuntimeException(503));
          
          // 执行请求并验证响应码
          ResultActions resultActions = mockMvc.perform(get("/prometheus"));
          resultActions.andExpect(MockMvcResultMatchers.status().is(NacosException.INVALID_PARAM));
          
          // 执行请求并验证响应码
          ResultActions resultActions1 = mockMvc.perform(get("/prometheus"));
          resultActions1.andExpect(MockMvcResultMatchers.status().is(NacosException.SERVER_ERROR));
          
          // 执行请求并验证响应码
          ResultActions resultActions2 = mockMvc.perform(get("/prometheus"));
          resultActions2.andExpect(MockMvcResultMatchers.status().is(503));
      }
  }
  