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   * 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
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  package org.apache.kafka.image;
  
  import org.apache.kafka.common.metadata.FeatureLevelRecord;
  import org.apache.kafka.server.common.KRaftVersion;
  import org.apache.kafka.server.common.MetadataVersion;
  import org.apache.kafka.server.common.MetadataVersionTestUtils;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.Map;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  class FeaturesDeltaTest {
  
      @Test
      public void testReplayWithUnsupportedFeatureLevel() {
          var featuresDelta = new FeaturesDelta(new FeaturesImage(Map.of(), MetadataVersion.MINIMUM_VERSION));
          var exception = assertThrows(IllegalArgumentException.class, () -> featuresDelta.replay(new FeatureLevelRecord()
              .setName(MetadataVersion.FEATURE_NAME)
              .setFeatureLevel(MetadataVersionTestUtils.IBP_3_3_IV2_FEATURE_LEVEL)));
          assertTrue(exception.getMessage().contains("Unsupported metadata version - if you are currently upgrading your " +
              "cluster, please ensure the metadata version is set to " + MetadataVersion.MINIMUM_VERSION),
              "Expected substring missing from exception message: " + exception.getMessage());
      }
  
      @Test
      public void testReplayKraftVersionFeatureLevel() {
          var featuresDelta = new FeaturesDelta(new FeaturesImage(Map.of(), MetadataVersion.MINIMUM_VERSION));
          featuresDelta.replay(new FeatureLevelRecord().setName(KRaftVersion.FEATURE_NAME).setFeatureLevel(KRaftVersion.LATEST_PRODUCTION.featureLevel()));
          assertEquals(Map.of(), featuresDelta.changes());
      }
  }
  