content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.kafka.clients;
  
  import org.apache.kafka.common.message.ApiVersionsResponseData;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.Arrays;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class ApiVersionsTest {
  
      @Test
      public void testFinalizedFeaturesUpdate() {
          ApiVersions apiVersions = new ApiVersions();
          assertEquals(-1, apiVersions.getMaxFinalizedFeaturesEpoch());
  
          apiVersions.update("2",
              new NodeApiVersions(NodeApiVersions.create().allSupportedApiVersions().values(),
                  Arrays.asList(new ApiVersionsResponseData.SupportedFeatureKey()
                      .setName("transaction.version")
                      .setMaxVersion((short) 2)
                      .setMinVersion((short) 0)),
                  Arrays.asList(new ApiVersionsResponseData.FinalizedFeatureKey()
                      .setName("transaction.version")
                      .setMaxVersionLevel((short) 2)
                      .setMinVersionLevel((short) 2)),
                  1));
          ApiVersions.FinalizedFeaturesInfo info = apiVersions.getFinalizedFeaturesInfo();
          assertEquals(1, info.finalizedFeaturesEpoch);
          assertEquals((short) 2, info.finalizedFeatures.get("transaction.version"));
  
          apiVersions.update("1",
              new NodeApiVersions(NodeApiVersions.create().allSupportedApiVersions().values(),
                  Arrays.asList(new ApiVersionsResponseData.SupportedFeatureKey()
                      .setName("transaction.version")
                      .setMaxVersion((short) 2)
                      .setMinVersion((short) 0)),
                  Arrays.asList(new ApiVersionsResponseData.FinalizedFeatureKey()
                      .setName("transaction.version")
                      .setMaxVersionLevel((short) 1)
                      .setMinVersionLevel((short) 1)),
                  0));
          // The stale update should be fenced.
          info = apiVersions.getFinalizedFeaturesInfo();
          assertEquals(1, info.finalizedFeaturesEpoch);
          assertEquals((short) 2, info.finalizedFeatures.get("transaction.version"));
      }
  
  }
  