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.server.record;
  
  import org.apache.kafka.common.compress.Compression;
  import org.apache.kafka.common.compress.GzipCompression;
  import org.apache.kafka.common.compress.Lz4Compression;
  import org.apache.kafka.common.compress.SnappyCompression;
  import org.apache.kafka.common.compress.ZstdCompression;
  import org.apache.kafka.common.record.CompressionType;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.Optional;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class BrokerCompressionTypeTest {
  
      @Test
      public void testTargetCompressionType() {
          GzipCompression gzipWithLevel = Compression.gzip().level(CompressionType.GZIP.maxLevel()).build();
          assertEquals(gzipWithLevel, BrokerCompressionType.targetCompression(Optional.of(gzipWithLevel), CompressionType.ZSTD));
          SnappyCompression snappy = Compression.snappy().build();
          assertEquals(snappy, BrokerCompressionType.targetCompression(Optional.of(snappy), CompressionType.LZ4));
          Lz4Compression lz4WithLevel = Compression.lz4().level(CompressionType.LZ4.maxLevel()).build();
          assertEquals(lz4WithLevel, BrokerCompressionType.targetCompression(Optional.of(lz4WithLevel), CompressionType.ZSTD));
          ZstdCompression zstdWithLevel = Compression.zstd().level(CompressionType.ZSTD.maxLevel()).build();
          assertEquals(zstdWithLevel, BrokerCompressionType.targetCompression(Optional.of(zstdWithLevel), CompressionType.GZIP));
  
          GzipCompression gzip = Compression.gzip().build();
          assertEquals(gzip, BrokerCompressionType.targetCompression(Optional.empty(), CompressionType.GZIP));
          assertEquals(snappy, BrokerCompressionType.targetCompression(Optional.empty(), CompressionType.SNAPPY));
          Lz4Compression lz4 = Compression.lz4().build();
          assertEquals(lz4, BrokerCompressionType.targetCompression(Optional.empty(), CompressionType.LZ4));
          ZstdCompression zstd = Compression.zstd().build();
          assertEquals(zstd, BrokerCompressionType.targetCompression(Optional.empty(), CompressionType.ZSTD));
      }
  
  }
  