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.streams.kstream.internals.foreignkeyjoin;
  
  import org.apache.kafka.common.errors.UnsupportedVersionException;
  import org.apache.kafka.common.serialization.Deserializer;
  import org.apache.kafka.common.serialization.Serde;
  import org.apache.kafka.common.serialization.Serdes;
  import org.apache.kafka.common.serialization.Serializer;
  import org.apache.kafka.streams.state.internals.Murmur3;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.Map;
  
  import static java.util.Objects.requireNonNull;
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public class SubscriptionResponseWrapperSerdeTest {
      private static final class NonNullableSerde<T> implements Serde<T>, Serializer<T>, Deserializer<T> {
          private final Serde<T> delegate;
  
          NonNullableSerde(final Serde<T> delegate) {
              this.delegate = delegate;
          }
  
          @Override
          public void configure(final Map<String, ?> configs, final boolean isKey) { }
  
          @Override
          public void close() { }
  
          @Override
          public Serializer<T> serializer() {
              return this;
          }
  
          @Override
          public Deserializer<T> deserializer() {
              return this;
          }
  
          @Override
          public byte[] serialize(final String topic, final T data) {
              return delegate.serializer().serialize(topic, requireNonNull(data));
          }
  
          @Override
          public T deserialize(final String topic, final byte[] data) {
              return delegate.deserializer().deserialize(topic, requireNonNull(data));
          }
      }
  
      @Test
      public void ShouldSerdeWithNonNullsTest() {
          final long[] hashedValue = Murmur3.hash128(new byte[] {(byte) 0x01, (byte) 0x9A, (byte) 0xFF, (byte) 0x00});
          final String foreignValue = "foreignValue";
          final SubscriptionResponseWrapper<String> srw = new SubscriptionResponseWrapper<>(hashedValue, foreignValue, 1);
          try (final SubscriptionResponseWrapperSerde<String> srwSerde = new SubscriptionResponseWrapperSerde<>(new NonNullableSerde<>(Serdes.String()))) {
              final byte[] serResponse = srwSerde.serializer().serialize(null, srw);
              final SubscriptionResponseWrapper<String> result = srwSerde.deserializer().deserialize(null, serResponse);
  
              assertArrayEquals(hashedValue, result.originalValueHash());
              assertEquals(foreignValue, result.foreignValue());
              assertNull(result.primaryPartition());
          }
      }
  
      @Test
      public void shouldSerdeWithNullForeignValueTest() {
          final long[] hashedValue = Murmur3.hash128(new byte[] {(byte) 0x01, (byte) 0x9A, (byte) 0xFF, (byte) 0x00});
          final SubscriptionResponseWrapper<String> srw = new SubscriptionResponseWrapper<>(hashedValue, null, 1);
          try (final SubscriptionResponseWrapperSerde<String> srwSerde = new SubscriptionResponseWrapperSerde<>(new NonNullableSerde<>(Serdes.String()))) {
              final byte[] serResponse = srwSerde.serializer().serialize(null, srw);
              final SubscriptionResponseWrapper<String> result = srwSerde.deserializer().deserialize(null, serResponse);
  
              assertArrayEquals(hashedValue, result.originalValueHash());
              assertNull(result.foreignValue());
              assertNull(result.primaryPartition());
          }
      }
  
      @Test
      public void shouldSerdeWithNullHashTest() {
          final long[] hashedValue = null;
          final String foreignValue = "foreignValue";
          final SubscriptionResponseWrapper<String> srw = new SubscriptionResponseWrapper<>(hashedValue, foreignValue, 1);
          try (final SubscriptionResponseWrapperSerde<String> srwSerde = new SubscriptionResponseWrapperSerde<>(new NonNullableSerde<>(Serdes.String()))) {
              final byte[] serResponse = srwSerde.serializer().serialize(null, srw);
              final SubscriptionResponseWrapper<String> result = srwSerde.deserializer().deserialize(null, serResponse);
  
              assertArrayEquals(hashedValue, result.originalValueHash());
              assertEquals(foreignValue, result.foreignValue());
              assertNull(result.primaryPartition());
          }
      }
  
      @Test
      public void shouldSerdeWithNullsTest() {
          final long[] hashedValue = null;
          final String foreignValue = null;
          final SubscriptionResponseWrapper<String> srw = new SubscriptionResponseWrapper<>(hashedValue, foreignValue, 1);
          try (final SubscriptionResponseWrapperSerde<String> srwSerde = new SubscriptionResponseWrapperSerde<>(new NonNullableSerde<>(Serdes.String()))) {
              final byte[] serResponse = srwSerde.serializer().serialize(null, srw);
              final SubscriptionResponseWrapper<String> result = srwSerde.deserializer().deserialize(null, serResponse);
  
              assertArrayEquals(hashedValue, result.originalValueHash());
              assertEquals(foreignValue, result.foreignValue());
              assertNull(result.primaryPartition());
          }
      }
  
      @Test
      public void shouldThrowExceptionWithBadVersionTest() {
          final long[] hashedValue = null;
          assertThrows(
              UnsupportedVersionException.class,
              () -> new SubscriptionResponseWrapper<>(hashedValue, "foreignValue", (byte) -1, 1)
          );
      }
  
      @Test
      public void shouldThrowExceptionOnSerializeWhenDataVersionUnknown() {
          final SubscriptionResponseWrapper<String> srw = new InvalidSubscriptionResponseWrapper(null, null, 1);
          try (final SubscriptionResponseWrapperSerde<String> srwSerde = new SubscriptionResponseWrapperSerde<>(null)) {
              assertThrows(
                  UnsupportedVersionException.class,
                  () -> srwSerde.serializer().serialize(null, srw)
              );
          }
      }
  
      public static class InvalidSubscriptionResponseWrapper extends SubscriptionResponseWrapper<String> {
  
          public InvalidSubscriptionResponseWrapper(final long[] originalValueHash,
                                                    final String foreignValue,
                                                    final Integer primaryPartition) {
              super(originalValueHash, foreignValue, primaryPartition);
          }
  
          @Override
          public byte version() {
              return -1;
          }
      }
  }