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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
   * limitations under the License.
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  package org.apache.camel.telemetry.decorators;
  
  import org.apache.camel.Endpoint;
  import org.apache.camel.Exchange;
  import org.apache.camel.Message;
  import org.apache.camel.telemetry.SpanDecorator;
  import org.apache.camel.telemetry.mock.MockSpanAdapter;
  import org.junit.jupiter.api.Test;
  import org.mockito.Mockito;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class KafkaSpanDecoratorTest {
  
      @Test
      public void testGetDestinationHeaderTopic() {
          Exchange exchange = Mockito.mock(Exchange.class);
          Message message = Mockito.mock(Message.class);
  
          Mockito.when(exchange.getIn()).thenReturn(message);
          Mockito.when(message.getHeader(KafkaSpanDecorator.OVERRIDE_TOPIC, String.class)).thenReturn("test");
  
          AbstractMessagingSpanDecorator decorator = new KafkaSpanDecorator();
  
          assertEquals("test", decorator.getDestination(exchange, null));
      }
  
      @Test
      public void testGetDestinationNoHeaderTopic() {
          Exchange exchange = Mockito.mock(Exchange.class);
          Message message = Mockito.mock(Message.class);
          Endpoint endpoint = Mockito.mock(Endpoint.class);
  
          Mockito.when(exchange.getIn()).thenReturn(message);
          Mockito.when(endpoint.getEndpointUri())
                  .thenReturn("kafka:test?brokers=localhost:9092&consumersCount=1");
  
          AbstractMessagingSpanDecorator decorator = new KafkaSpanDecorator();
  
          assertEquals("test", decorator.getDestination(exchange, endpoint));
      }
  
      @Test
      public void testPreOffsetAndPartitionAsStringHeader() {
          String testKey = "TestKey";
          String testOffset = "TestOffset";
          String testPartition = "TestPartition";
          String testPartitionKey = "TestPartitionKey";
  
          Endpoint endpoint = Mockito.mock(Endpoint.class);
          Exchange exchange = Mockito.mock(Exchange.class);
          Message message = Mockito.mock(Message.class);
  
          Mockito.when(endpoint.getEndpointUri()).thenReturn("test");
          Mockito.when(exchange.getIn()).thenReturn(message);
          Mockito.when(message.getHeader(KafkaSpanDecorator.KEY, String.class)).thenReturn(testKey);
          Mockito.when(message.getHeader(KafkaSpanDecorator.OFFSET, String.class)).thenReturn(testOffset);
          Mockito.when(message.getHeader(KafkaSpanDecorator.PARTITION, String.class)).thenReturn(testPartition);
          Mockito.when(message.getHeader(KafkaSpanDecorator.PARTITION_KEY, String.class)).thenReturn(testPartitionKey);
  
          SpanDecorator decorator = new KafkaSpanDecorator();
  
          MockSpanAdapter span = new MockSpanAdapter();
  
          decorator.beforeTracingEvent(span, exchange, endpoint);
  
          assertEquals(testKey, span.tags().get(KafkaSpanDecorator.KAFKA_KEY_TAG));
          assertEquals(testOffset, span.tags().get(KafkaSpanDecorator.KAFKA_OFFSET_TAG));
          assertEquals(testPartition, span.tags().get(KafkaSpanDecorator.KAFKA_PARTITION_TAG));
          assertEquals(testPartitionKey, span.tags().get(KafkaSpanDecorator.KAFKA_PARTITION_KEY_TAG));
      }
  
      @Test
      public void testPrePartitionAsIntegerHeaderAndOffsetAsLongHeader() {
          Long testOffset = 4875454L;
          Integer testPartition = 0;
  
          Endpoint endpoint = Mockito.mock(Endpoint.class);
          Exchange exchange = Mockito.mock(Exchange.class);
          Message message = Mockito.mock(Message.class);
  
          Mockito.when(endpoint.getEndpointUri()).thenReturn("test");
          Mockito.when(exchange.getIn()).thenReturn(message);
          Mockito.when(message.getHeader(KafkaSpanDecorator.OFFSET, String.class)).thenReturn(testOffset.toString());
          Mockito.when(message.getHeader(KafkaSpanDecorator.PARTITION, String.class)).thenReturn(testPartition.toString());
  
          SpanDecorator decorator = new KafkaSpanDecorator();
  
          MockSpanAdapter span = new MockSpanAdapter();
  
          decorator.beforeTracingEvent(span, exchange, endpoint);
  
          assertEquals(String.valueOf(testOffset), span.tags().get(KafkaSpanDecorator.KAFKA_OFFSET_TAG));
          assertEquals(String.valueOf(testPartition), span.tags().get(KafkaSpanDecorator.KAFKA_PARTITION_TAG));
      }
  
  }
  