juplo.de Git - demos/kafka/wordcount/blob - src/test/java/de/juplo/kafka/wordcount/counter/CounterApplicationIT.java

   1 package de.juplo.kafka.wordcount.counter;
   2
   3 import lombok.extern.slf4j.Slf4j;
   4 import org.apache.kafka.clients.consumer.ConsumerRecord;
   5 import org.apache.kafka.streams.KeyValue;
   6 import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
   7 import org.apache.kafka.streams.state.Stores;
   8 import org.junit.jupiter.api.BeforeEach;
   9 import org.junit.jupiter.api.Test;
  10 import org.springframework.beans.factory.annotation.Autowired;
  11 import org.springframework.boot.test.context.SpringBootTest;
  12 import org.springframework.boot.test.context.TestConfiguration;
  13 import org.springframework.context.annotation.Bean;
  14 import org.springframework.context.annotation.Primary;
  15 import org.springframework.kafka.annotation.KafkaListener;
  16 import org.springframework.kafka.core.KafkaTemplate;
  17 import org.springframework.kafka.test.context.EmbeddedKafka;
  18
  19 import java.time.Duration;
  20 import java.util.LinkedList;
  21 import java.util.List;
  22
  23 import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.TOPIC_IN;
  24 import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.TOPIC_OUT;
  25 import static de.juplo.kafka.wordcount.counter.TestData.parseHeader;
  26 import static org.awaitility.Awaitility.await;
  27 import static org.springframework.kafka.support.mapping.AbstractJavaTypeMapper.DEFAULT_CLASSID_FIELD_NAME;
  28 import static org.springframework.kafka.support.mapping.AbstractJavaTypeMapper.KEY_DEFAULT_CLASSID_FIELD_NAME;
  29
  30
  31 @SpringBootTest(
  32                 properties = {
  33                                 "spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
  34                                 "spring.kafka.producer.properties.spring.json.add.type.headers=false",
  35                                 "spring.kafka.consumer.auto-offset-reset=earliest",
  36                                 "spring.kafka.consumer.key-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  37                                 "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  38                                 "spring.kafka.consumer.properties.spring.json.use.type.headers=false",
  39                                 "spring.kafka.consumer.properties.spring.json.key.default.type=de.juplo.kafka.wordcount.counter.Word",
  40                                 "spring.kafka.consumer.properties.spring.json.value.default.type=de.juplo.kafka.wordcount.counter.WordCounter",
  41                                 "logging.level.root=WARN",
  42                                 "logging.level.de.juplo=DEBUG",
  43                                 "juplo.wordcount.counter.bootstrap-server=${spring.embedded.kafka.brokers}",
  44                                 "juplo.wordcount.counter.commit-interval=0",
  45                                 "juplo.wordcount.counter.cacheMaxBytes=0",
  46                                 "juplo.wordcount.counter.input-topic=" + TOPIC_IN,
  47                                 "juplo.wordcount.counter.output-topic=" + TOPIC_OUT })
  48 @EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT })
  49 @Slf4j
  50 public class CounterApplicationIT
  51 {
  52         public static final String TOPIC_IN = "in";
  53         public static final String TOPIC_OUT = "out";
  54
  55         @Autowired
  56         KafkaTemplate<String, Word> kafkaTemplate;
  57         @Autowired
  58         Consumer consumer;
  59
  60
  61         @BeforeEach
  62         public void clear()
  63         {
  64                 consumer.received.clear();
  65         }
  66
  67
  68         @Test
  69         void testSendMessage()
  70         {
  71                 TestData.writeInputData((key, value) -> kafkaTemplate.send(TOPIC_IN, key, value));
  72
  73                 await("Expexted converted data")
  74                                 .atMost(Duration.ofSeconds(10))
  75                                 .untilAsserted(() -> TestData.assertExpectedResult(consumer.getReceivedMessages()));
  76         }
  77
  78
  79         static class Consumer
  80         {
  81                 private final List<KeyValue<Word, WordCounter>> received = new LinkedList<>();
  82
  83                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
  84                 public synchronized void receive(ConsumerRecord<Word, WordCounter> record)
  85                 {
  86                         log.debug(
  87                                         "Received message: {} -> {}, key: {}, value: {}",
  88                                         record.key(),
  89                                         record.value(),
  90                                         parseHeader(record.headers(), KEY_DEFAULT_CLASSID_FIELD_NAME),
  91                                         parseHeader(record.headers(), DEFAULT_CLASSID_FIELD_NAME));
  92                         received.add(KeyValue.pair(record.key(),record.value()));
  93                 }
  94
  95                 synchronized List<KeyValue<Word, WordCounter>> getReceivedMessages()
  96                 {
  97                         return received;
  98                 }
  99         }
 100
 101         @TestConfiguration
 102         static class Configuration
 103         {
 104                 @Bean
 105                 Consumer consumer()
 106                 {
 107                         return new Consumer();
 108                 }
 109
 110                 @Primary
 111                 @Bean
 112                 KeyValueBytesStoreSupplier inMemoryStoreSupplier()
 113                 {
 114                         return Stores.inMemoryKeyValueStore("TEST-STORE");
 115                 }
 116         }
 117 }