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.camel.component.kafka.transform;
  
  import java.nio.charset.StandardCharsets;
  import java.util.Arrays;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.component.kafka.KafkaHeaderDeserializer;
  import org.apache.camel.impl.DefaultCamelContext;
  import org.apache.camel.support.DefaultExchange;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  class KafkaHeaderDeserializerTest {
  
      private DefaultCamelContext camelContext;
  
      private final KafkaHeaderDeserializer processor = new KafkaHeaderDeserializer();
  
      @BeforeEach
      void setup() {
          this.camelContext = new DefaultCamelContext();
      }
  
      @Test
      void shouldDeserializeHeaders() throws Exception {
          Exchange exchange = new DefaultExchange(camelContext);
  
          exchange.getMessage().setHeader("foo", "bar");
          exchange.getMessage().setHeader("fooBytes", "barBytes".getBytes(StandardCharsets.UTF_8));
          exchange.getMessage().setHeader("fooNull", null);
          exchange.getMessage().setHeader("number", 1L);
  
          processor.enabled = true;
          processor.process(exchange);
  
          Assertions.assertTrue(exchange.getMessage().hasHeaders());
          Assertions.assertEquals("bar", exchange.getMessage().getHeader("foo"));
          Assertions.assertEquals("barBytes", exchange.getMessage().getHeader("fooBytes"));
          Assertions.assertTrue(exchange.getMessage().getHeaders().containsKey("fooNull"));
          Assertions.assertNull(exchange.getMessage().getHeader("fooNull"));
          Assertions.assertEquals("1", exchange.getMessage().getHeader("number"));
      }
  
      @Test
      void shouldNotDeserializeHeadersWhenDisabled() throws Exception {
          Exchange exchange = new DefaultExchange(camelContext);
  
          exchange.getMessage().setHeader("foo", "bar");
          exchange.getMessage().setHeader("fooBytes", "barBytes".getBytes(StandardCharsets.UTF_8));
  
          processor.enabled = false;
          processor.process(exchange);
  
          Assertions.assertTrue(exchange.getMessage().hasHeaders());
          Assertions.assertEquals("bar", exchange.getMessage().getHeader("foo"));
          Assertions.assertTrue(exchange.getMessage().getHeader("fooBytes") instanceof byte[]);
          Assertions.assertEquals(Arrays.toString("barBytes".getBytes(StandardCharsets.UTF_8)),
                  Arrays.toString((byte[]) exchange.getMessage().getHeader("fooBytes")));
      }
  }
  