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.test.core;
  
  import com.alibaba.nacos.core.distributed.id.SnowFlowerIdGenerator;
  import com.alibaba.nacos.sys.env.EnvUtil;
  import org.junit.jupiter.api.Test;
  import org.springframework.core.env.StandardEnvironment;
  
  import static org.junit.jupiter.api.Assertions.assertNotEquals;
  
  /**
   * Integration test case for validating unique ID generation using SnowFlowerIdGenerator with distinct initializations
   * and assertions for uniqueness.
   *
   * @author <a href="mailto:liaochuntao@live.com">liaochuntao</a>
   */
  @SuppressWarnings("checkstyle:AbbreviationAsWordInName")
  class SnowFlowerIdGeneratorCoreITCase {
      
      @Test
      void testIdGenerator() {
          EnvUtil.setEnvironment(new StandardEnvironment());
          SnowFlowerIdGenerator generator1 = new SnowFlowerIdGenerator();
          SnowFlowerIdGenerator generator2 = new SnowFlowerIdGenerator();
          SnowFlowerIdGenerator generator3 = new SnowFlowerIdGenerator();
          
          generator1.initialize(1);
          generator2.initialize(2);
          generator3.initialize(3);
          
          long id1 = generator1.nextId();
          long id2 = generator2.nextId();
          long id3 = generator3.nextId();
          
          assertNotEquals(id1, id2);
          assertNotEquals(id1, id3);
          assertNotEquals(id2, id3);
          
      }
      
  }
  