content: /*
   * Copyright 1999-2023 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.api.config;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  class ConfigChangeEventTest {
      
      @Test
      void testConstructor() {
          Map<String, ConfigChangeItem> mockData = new HashMap<>();
          mockData.put("test", new ConfigChangeItem("testKey", null, "testValue"));
          ConfigChangeEvent event = new ConfigChangeEvent(mockData);
          assertEquals(1, event.getChangeItems().size());
          assertEquals("testKey", event.getChangeItem("test").getKey());
          assertNull(event.getChangeItem("test").getOldValue());
          assertEquals("testValue", event.getChangeItem("test").getNewValue());
      }
  }