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