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.producer;
  
  import java.util.List;
  
  import com.fasterxml.jackson.databind.node.TextNode;
  import org.apache.camel.CamelContext;
  import org.apache.camel.Exchange;
  import org.apache.camel.Message;
  import org.apache.camel.component.kafka.KafkaComponent;
  import org.apache.camel.component.kafka.KafkaEndpoint;
  import org.apache.camel.component.kafka.KafkaProducer;
  import org.apache.camel.impl.DefaultCamelContext;
  import org.apache.kafka.common.serialization.StringSerializer;
  import org.hamcrest.core.Is;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.Spy;
  import org.mockito.junit.jupiter.MockitoExtension;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  public class KafkaProducerTest {
  
      private final MockProducer kafkaProducer = new MockProducer<>(true, new StringSerializer(), new StringSerializer());
      private KafkaProducer camelProducer;
      @Spy
      private Exchange exchange;
      @Spy
      private Message message;
  
      @BeforeEach
      public void init() throws Exception {
          CamelContext context = new DefaultCamelContext();
          KafkaComponent component = new KafkaComponent(context);
          camelProducer = new KafkaProducer((KafkaEndpoint) component.createEndpoint("kafka:test"));
          camelProducer.setKafkaProducer(kafkaProducer);
          when(exchange.getIn()).thenReturn(message);
          when(exchange.getContext()).thenReturn(context);
          when(message.getHeader("kafka.PARTITION_KEY", Integer.class)).thenReturn(0);
          when(message.getHeader("kafka.KEY")).thenReturn("key");
      }
  
      @AfterEach
      public void after() {
          kafkaProducer.clear();
      }
  
      @Test
      public void testSendOverrideTopic() throws Exception {
          when(message.removeHeader("kafka.OVERRIDE_TOPIC")).thenReturn("overridden-topic");
          camelProducer.process(exchange);
          when(message.removeHeader("kafka.OVERRIDE_TOPIC")).thenReturn(new TextNode("overridden-topic-jackson"));
          camelProducer.process(exchange);
          List<ProducerRecord<Object, Object>> records = kafkaProducer.history();
          assertThat(records.get(0).topic(), Is.is("overridden-topic"));
          assertThat(records.get(1).topic(), Is.is("overridden-topic-jackson"));
      }
  
  }
  