juplo.de Git - demos/kafka/wordcount/blob - src/test/java/de/juplo/kafka/wordcount/recorder/RecorderApplicationIT.java

   1 package de.juplo.kafka.wordcount.recorder;
   2
   3 import de.juplo.kafka.wordcount.splitter.TestRecording;
   4 import lombok.extern.slf4j.Slf4j;
   5 import org.junit.jupiter.api.DisplayName;
   6 import org.junit.jupiter.api.Test;
   7 import org.springframework.beans.factory.annotation.Autowired;
   8 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
   9 import org.springframework.boot.test.context.SpringBootTest;
  10 import org.springframework.boot.test.context.TestConfiguration;
  11 import org.springframework.context.annotation.Bean;
  12 import org.springframework.http.MediaType;
  13 import org.springframework.kafka.annotation.KafkaListener;
  14 import org.springframework.kafka.support.KafkaHeaders;
  15 import org.springframework.kafka.test.context.EmbeddedKafka;
  16 import org.springframework.messaging.handler.annotation.Header;
  17 import org.springframework.messaging.handler.annotation.Payload;
  18 import org.springframework.test.web.servlet.MockMvc;
  19 import org.springframework.test.web.servlet.MvcResult;
  20 import org.springframework.util.LinkedMultiValueMap;
  21 import org.springframework.util.MultiValueMap;
  22
  23 import java.time.Duration;
  24 import java.util.List;
  25
  26 import static de.juplo.kafka.wordcount.recorder.RecorderApplicationIT.TOPIC_OUT;
  27 import static org.assertj.core.api.Assertions.assertThat;
  28 import static org.awaitility.Awaitility.await;
  29 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.asyncDispatch;
  30 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
  31 import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
  32 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
  33 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
  34
  35
  36 @SpringBootTest(
  37                 properties = {
  38                                 "spring.kafka.consumer.auto-offset-reset=earliest",
  39                                 "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  40                                 "spring.kafka.consumer.properties.spring.json.value.default.type=de.juplo.kafka.wordcount.splitter.TestRecording",
  41                                 "spring.kafka.consumer.properties.spring.json.trusted.packages=de.juplo.kafka.wordcount.recorder",
  42                                 "logging.level.root=WARN",
  43                                 "logging.level.de.juplo=DEBUG",
  44                                 "juplo.wordcount.recorder.bootstrap-server=${spring.embedded.kafka.brokers}",
  45                                 "juplo.wordcount.recorder.topic=" + TOPIC_OUT })
  46 @AutoConfigureMockMvc
  47 @EmbeddedKafka(topics = { TOPIC_OUT })
  48 @Slf4j
  49 class RecorderApplicationIT
  50 {
  51         static final String TOPIC_OUT = "out";
  52
  53         @Autowired
  54         MockMvc mockMvc;
  55         @Autowired
  56         Consumer consumer;
  57
  58
  59         @Test
  60         @DisplayName("Posted messages are accepted and sent to Kafka")
  61         void userMessagesAreAcceptedAndSentToKafka()
  62         {
  63                 MultiValueMap<String, TestRecording> recordings = new LinkedMultiValueMap<>();
  64
  65                 TestData
  66                                 .getInputMessages()
  67                                 .forEach(kv ->
  68                                 {
  69                                         sendRedording(kv.key, kv.value);
  70                                         recordings.add(kv.key, TestRecording.of(kv.key, kv.value));
  71                                 });
  72
  73
  74                 await("Received expected messages")
  75                                 .atMost(Duration.ofSeconds(5))
  76                                 .untilAsserted(() -> recordings.forEach((user, userRecordings) ->
  77                                                 assertThat(consumer.receivedFor(user)).containsExactlyElementsOf(userRecordings)));
  78         }
  79
  80         void sendRedording(String user, String sentence)
  81         {
  82                 try
  83                 {
  84                         MvcResult result = mockMvc
  85                                         .perform(post("/{user}", user)
  86                                                         .contentType(MediaType.TEXT_PLAIN)
  87                                                         .content(sentence))
  88                                         .andReturn();
  89
  90                         mockMvc.perform(asyncDispatch(result))
  91                                         .andDo(print())
  92                                         .andExpect(status().isOk())
  93                                         .andExpect(jsonPath("$.username").value(user))
  94                                         .andExpect(jsonPath("$.sentence").value(sentence));
  95                 }
  96                 catch (Exception e)
  97                 {
  98                         throw new RuntimeException(e);
  99                 }
 100         }
 101
 102
 103         static class Consumer
 104         {
 105                 private final MultiValueMap<String, TestRecording> received = new LinkedMultiValueMap<>();
 106
 107                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
 108                 public synchronized void receive(
 109                                 @Header(KafkaHeaders.RECEIVED_KEY) String user,
 110                                 @Payload TestRecording recording)
 111                 {
 112                         log.debug("Received message: {}={}", user, recording);
 113                         received.add(user, recording);
 114                 }
 115
 116                 synchronized List<TestRecording> receivedFor(String user)
 117                 {
 118                         List<TestRecording> recordings = received.get(user);
 119                         return recordings == null
 120                                         ? List.of()
 121                                         : received.get(user).stream().toList();
 122                 }
 123         }
 124
 125         @TestConfiguration
 126         static class Configuration
 127         {
 128                 @Bean
 129                 Consumer consumer()
 130                 {
 131                         return new Consumer();
 132                 }
 133         }
 134 }