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.persistence.repository.embedded.hook;
  
  import com.alibaba.nacos.consistency.entity.WriteRequest;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  class EmbeddedApplyHookHolderTest {
      
      Set<EmbeddedApplyHook> cached;
      
      @BeforeEach
      void setUp() {
          cached = new HashSet<>(EmbeddedApplyHookHolder.getInstance().getAllHooks());
          EmbeddedApplyHookHolder.getInstance().getAllHooks().clear();
      }
      
      @AfterEach
      void tearDown() {
          EmbeddedApplyHookHolder.getInstance().getAllHooks().clear();
          EmbeddedApplyHookHolder.getInstance().getAllHooks().addAll(cached);
      }
      
      @Test
      void testRegister() {
          assertEquals(0, EmbeddedApplyHookHolder.getInstance().getAllHooks().size());
          EmbeddedApplyHook mockHook = new EmbeddedApplyHook() {
              @Override
              public void afterApply(WriteRequest log) {
              
              }
          };
          assertEquals(1, EmbeddedApplyHookHolder.getInstance().getAllHooks().size());
          assertEquals(mockHook, EmbeddedApplyHookHolder.getInstance().getAllHooks().iterator().next());
      }
  }