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

   1 package de.juplo.kafka.wordcount.recorder;
   2
   3 import lombok.extern.slf4j.Slf4j;
   4 import org.apache.kafka.clients.consumer.ConsumerRecord;
   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.test.context.EmbeddedKafka;
  15 import org.springframework.test.web.servlet.MockMvc;
  16 import org.springframework.test.web.servlet.MvcResult;
  17 import org.springframework.util.LinkedMultiValueMap;
  18 import org.springframework.util.MultiValueMap;
  19
  20 import static de.juplo.kafka.wordcount.recorder.ApplicationTests.PARTITIONS;
  21 import static de.juplo.kafka.wordcount.recorder.ApplicationTests.TOPIC_OUT;
  22 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.asyncDispatch;
  23 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
  24 import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
  25 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
  26 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
  27
  28
  29 @SpringBootTest(
  30                 properties = {
  31                                 "spring.kafka.bootstrap-servers=${spring.embedded.kafka.brokers}",
  32                                 "juplo.wordcount.recorder.bootstrap-server=${spring.embedded.kafka.brokers}",
  33                                 "juplo.wordcount.recorder.topic=" + TOPIC_OUT })
  34 @AutoConfigureMockMvc
  35 @EmbeddedKafka(topics = { TOPIC_OUT }, partitions = PARTITIONS)
  36 @Slf4j
  37 class ApplicationTests
  38 {
  39         static final String TOPIC_OUT = "out";
  40         static final int PARTITIONS = 2;
  41         static final String USER = "päter";
  42         static final String SENTENCE = "Hall° Wält?¢*&%€!";
  43
  44
  45         @Autowired
  46         private MockMvc mockMvc;
  47
  48         @Test
  49         @DisplayName("The application context loads")
  50         void contextLoads()
  51         {
  52         }
  53
  54         @Test
  55         void userMessagesAreExceptedAndSentToKafka() throws Exception
  56         {
  57                 MvcResult result = mockMvc
  58                                 .perform(post("/{user}", USER)
  59                                                 .contentType(MediaType.TEXT_PLAIN)
  60                                                 .content(SENTENCE))
  61                                 .andReturn();
  62
  63                 mockMvc.perform(asyncDispatch(result))
  64                                 .andDo(print())
  65                                 .andExpect(status().isOk())
  66                                 .andExpect(jsonPath("$.username").value(USER))
  67                                 .andExpect(jsonPath("$.sentence").value(SENTENCE));
  68         }
  69
  70         static class Consumer
  71         {
  72                 final MultiValueMap<String, String> received = new LinkedMultiValueMap<>();
  73
  74                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
  75                 public void receive(ConsumerRecord<String, String> record)
  76                 {
  77                         log.debug("Received message: {}", record);
  78                         received.add(record.key(), record.value());
  79                 }
  80         }
  81
  82         @TestConfiguration
  83         static class Configuration
  84         {
  85                 @Bean
  86                 Consumer consumer()
  87                 {
  88                         return new Consumer();
  89                 }
  90         }
  91 }