1 package de.juplo.kafka.wordcount.top10;
3 import de.juplo.kafka.wordcount.counter.TestCounter;
4 import de.juplo.kafka.wordcount.counter.TestWord;
5 import de.juplo.kafka.wordcount.query.TestRanking;
6 import de.juplo.kafka.wordcount.query.TestUser;
7 import lombok.extern.slf4j.Slf4j;
8 import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
9 import org.apache.kafka.streams.state.Stores;
10 import org.junit.jupiter.api.BeforeAll;
11 import org.junit.jupiter.api.Disabled;
12 import org.junit.jupiter.api.DisplayName;
13 import org.junit.jupiter.api.Test;
14 import org.springframework.beans.factory.annotation.Autowired;
15 import org.springframework.boot.test.context.SpringBootTest;
16 import org.springframework.boot.test.context.TestConfiguration;
17 import org.springframework.context.annotation.Bean;
18 import org.springframework.context.annotation.Primary;
19 import org.springframework.kafka.annotation.KafkaListener;
20 import org.springframework.kafka.core.KafkaTemplate;
21 import org.springframework.kafka.support.KafkaHeaders;
22 import org.springframework.kafka.support.SendResult;
23 import org.springframework.kafka.test.context.EmbeddedKafka;
24 import org.springframework.messaging.handler.annotation.Header;
25 import org.springframework.messaging.handler.annotation.Payload;
26 import org.springframework.util.LinkedMultiValueMap;
27 import org.springframework.util.MultiValueMap;
29 import java.time.Duration;
31 import static de.juplo.kafka.wordcount.top10.Top10StreamProcessor.STORE_NAME;
32 import static org.awaitility.Awaitility.await;
37 "spring.kafka.producer.key-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
38 "spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
39 "spring.kafka.producer.properties.spring.json.type.mapping=key:de.juplo.kafka.wordcount.counter.TestWord,counter:de.juplo.kafka.wordcount.counter.TestCounter",
40 "spring.kafka.consumer.auto-offset-reset=earliest",
41 "spring.kafka.consumer.key-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
42 "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
43 "spring.kafka.consumer.properties.spring.json.type.mapping=user:de.juplo.kafka.wordcount.query.TestUser,ranking:de.juplo.kafka.wordcount.query.TestRanking",
44 "logging.level.root=WARN",
45 "logging.level.de.juplo=DEBUG",
46 "logging.level.org.apache.kafka.clients=INFO",
47 "logging.level.org.apache.kafka.streams=INFO",
48 "juplo.wordcount.top10.bootstrap-server=${spring.embedded.kafka.brokers}",
49 "juplo.wordcount.top10.commit-interval=100",
50 "juplo.wordcount.top10.cacheMaxBytes=0",
51 "juplo.wordcount.top10.input-topic=" + Top10ApplicationIT.TOPIC_IN,
52 "juplo.wordcount.top10.output-topic=" + Top10ApplicationIT.TOPIC_OUT })
53 @EmbeddedKafka(topics = { Top10ApplicationIT.TOPIC_IN, Top10ApplicationIT.TOPIC_OUT })
55 public class Top10ApplicationIT
57 public static final String TOPIC_IN = "in";
58 public static final String TOPIC_OUT = "out";
63 Top10StreamProcessor streamProcessor;
67 public static void testSendMessage(
68 @Autowired KafkaTemplate<TestWord, TestCounter> kafkaTemplate)
76 SendResult<TestWord, TestCounter> result = kafkaTemplate.send(TOPIC_IN, kv.key, kv.value).get();
78 "Sent: {}={}, partition={}, offset={}",
79 result.getProducerRecord().key(),
80 result.getProducerRecord().value(),
81 result.getRecordMetadata().partition(),
82 result.getRecordMetadata().offset());
86 throw new RuntimeException(e);
91 @DisplayName("Await the expected state in the state-store")
93 public void testAwaitExpectedState()
95 await("Expected state")
96 .atMost(Duration.ofSeconds(5))
97 .untilAsserted(() -> TestData.assertExpectedState(streamProcessor.getStore()));
100 @DisplayName("Await the expected output messages")
103 public void testAwaitExpectedMessages()
105 await("Expected messages")
106 .atMost(Duration.ofSeconds(5))
107 .untilAsserted(() -> consumer.enforceAssertion(
108 receivedMessages -> TestData.assertExpectedMessages(receivedMessages)));
111 @DisplayName("Await the expected number of messages")
113 public void testAwaitExpectedNumberOfMessagesForUsers()
115 await("Expected number of messages")
116 .atMost(Duration.ofSeconds(5))
117 .untilAsserted(() -> consumer.enforceAssertion(
118 receivedMessages -> TestData.assertExpectedNumberOfMessagesForUsers(receivedMessages)));
121 @DisplayName("Await the expected final output messages")
123 public void testAwaitExpectedLastMessagesForUsers()
125 await("Expected final output messages")
126 .atMost(Duration.ofSeconds(5))
127 .untilAsserted(() -> consumer.enforceAssertion(
128 receivedMessages -> TestData.assertExpectedLastMessagesForUsers(receivedMessages)));
132 static class Consumer
134 private final MultiValueMap<TestUser, TestRanking> received = new LinkedMultiValueMap<>();
136 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
137 public synchronized void receive(
138 @Header(KafkaHeaders.RECEIVED_KEY) TestUser user,
139 @Payload TestRanking ranking)
141 log.debug("Received message: {} -> {}", user, ranking);
142 received.add(user, ranking);
145 synchronized void enforceAssertion(
146 java.util.function.Consumer<MultiValueMap<TestUser, TestRanking>> assertion)
148 assertion.accept(received);
153 static class Configuration
158 return new Consumer();
163 KeyValueBytesStoreSupplier inMemoryStoreSupplier()
165 return Stores.inMemoryKeyValueStore(STORE_NAME);