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

   1 package de.juplo.kafka;
   2
   3 import lombok.extern.slf4j.Slf4j;
   4 import org.apache.kafka.clients.consumer.ConsumerRecord;
   5 import org.junit.jupiter.api.*;
   6 import org.springframework.beans.factory.annotation.Autowired;
   7 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
   8 import org.springframework.boot.test.context.SpringBootTest;
   9 import org.springframework.boot.test.context.TestConfiguration;
  10 import org.springframework.context.annotation.Bean;
  11 import org.springframework.kafka.annotation.KafkaListener;
  12 import org.springframework.kafka.test.context.EmbeddedKafka;
  13 import org.springframework.test.web.servlet.MockMvc;
  14
  15 import java.time.Duration;
  16 import java.util.LinkedList;
  17 import java.util.List;
  18
  19 import static de.juplo.kafka.ApplicationTests.PARTITIONS;
  20 import static de.juplo.kafka.ApplicationTests.TOPIC;
  21 import static org.awaitility.Awaitility.*;
  22 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
  23 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
  24
  25
  26 @SpringBootTest(
  27                 properties = {
  28                                 "spring.kafka.consumer.bootstrap-servers=${spring.embedded.kafka.brokers}",
  29                                 "producer.bootstrap-server=${spring.embedded.kafka.brokers}",
  30                                 "producer.topic=" + TOPIC})
  31 @AutoConfigureMockMvc
  32 @EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS)
  33 @Slf4j
  34 public class ApplicationTests
  35 {
  36         static final String TOPIC = "FOO";
  37         static final int PARTITIONS = 10;
  38
  39         @Autowired
  40         MockMvc mockMvc;
  41         @Autowired
  42         Consumer consumer;
  43
  44
  45         @BeforeEach
  46         public void clear()
  47         {
  48                 consumer.received.clear();
  49         }
  50
  51
  52         @Test
  53         void testSendMessage() throws Exception
  54         {
  55                 mockMvc
  56                                 .perform(post("/peter").content("Hallo Welt!"))
  57                                 .andExpect(status().isOk());
  58                 await("Message was send")
  59                                 .atMost(Duration.ofSeconds(5))
  60                                 .until(() -> consumer.received.size() == 1);
  61         }
  62
  63
  64         static class Consumer
  65         {
  66                 final List<ConsumerRecord<String, String>> received = new LinkedList<>();
  67
  68                 @KafkaListener(groupId = "TEST", topics = TOPIC)
  69                 public void receive(ConsumerRecord<String, String> record)
  70                 {
  71                         log.debug("Received message: {}", record);
  72                         received.add(record);
  73                 }
  74         }
  75
  76         @TestConfiguration
  77         static class Configuration
  78         {
  79                 @Bean
  80                 Consumer consumer()
  81                 {
  82                         return new Consumer();
  83                 }
  84         }
  85 }