content: /*
   * Copyright 1999-2024 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.config.server.utils;
  
  import com.alibaba.nacos.config.server.model.ConfigListenState;
  import com.alibaba.nacos.config.server.service.ConfigCacheService;
  import jakarta.servlet.http.HttpServletRequest;
  import jakarta.servlet.http.HttpServletResponse;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.Mock;
  import org.mockito.MockedStatic;
  import org.mockito.junit.jupiter.MockitoExtension;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import static com.alibaba.nacos.api.common.Constants.VIPSERVER_TAG;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.mockito.ArgumentMatchers.anyString;
  import static org.mockito.ArgumentMatchers.eq;
  import static org.mockito.Mockito.mockStatic;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  class NacosMd5ComparatorTest {
      
      MockedStatic<RequestUtil> mockRequestUtil;
      
      MockedStatic<ConfigCacheService> configCacheServiceMockedStatic;
      
      @Mock
      HttpServletRequest request;
      
      @Mock
      HttpServletResponse response;
      
      @BeforeEach
      void setUp() {
          mockRequestUtil = mockStatic(RequestUtil.class);
          configCacheServiceMockedStatic = mockStatic(ConfigCacheService.class);
      }
      
      @AfterEach
      void tearDown() {
          mockRequestUtil.close();
          configCacheServiceMockedStatic.close();
      }
      
      @Test
      void getName() {
          NacosMd5Comparator nacosMd5Comparator = new NacosMd5Comparator();
          assertEquals("nacos", nacosMd5Comparator.getName());
      }
      
      @Test
      void compareMd5NoChange() {
          String ip = "127.0.0.1";
          String tag = "tag";
          when(request.getHeader(VIPSERVER_TAG)).thenReturn(tag);
          mockRequestUtil.when(() -> RequestUtil.getRemoteIp(request)).thenReturn(ip);
          
          String groupKey1 = "groupKey1";
          String groupKey2 = "groupKey2";
          String clientMd5 = "clientMd5";
          HashMap<String, ConfigListenState> clientMd5Map = new HashMap<>();
          clientMd5Map.put(groupKey1, new ConfigListenState(clientMd5));
          clientMd5Map.put(groupKey2, new ConfigListenState(clientMd5));
          
          NacosMd5Comparator nacosMd5Comparator = new NacosMd5Comparator();
          configCacheServiceMockedStatic.when(
                  () -> ConfigCacheService.isUptodate(anyString(), eq(clientMd5), eq(ip), eq(tag))).thenReturn(true);
          
          Map<String, ConfigListenState> changedGroupKeys = nacosMd5Comparator.compareMd5(request, response, clientMd5Map);
          assertEquals(0, changedGroupKeys.size());
      }
      
      @Test
      void compareMd5Change() {
          String ip = "127.0.0.1";
          String tag = "tag";
          when(request.getHeader(VIPSERVER_TAG)).thenReturn(tag);
          mockRequestUtil.when(() -> RequestUtil.getRemoteIp(request)).thenReturn(ip);
          
          String groupKey1 = "groupKey1";
          String groupKey2 = "groupKey2";
          String clientMd5 = "clientMd5";
          HashMap<String, ConfigListenState> clientMd5Map = new HashMap<>();
          clientMd5Map.put(groupKey1, new ConfigListenState(clientMd5));
          clientMd5Map.put(groupKey2, new ConfigListenState(clientMd5));
          
          NacosMd5Comparator nacosMd5Comparator = new NacosMd5Comparator();
          configCacheServiceMockedStatic.when(
                  () -> ConfigCacheService.isUptodate(anyString(), eq(clientMd5), eq(ip), eq(tag))).thenReturn(false);
          
          Map<String, ConfigListenState> changedGroupKeys = nacosMd5Comparator.compareMd5(request, response, clientMd5Map);
          assertEquals(2, changedGroupKeys.size());
      }
  }