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.request.MockMvcRequestBuilders.put;
  24 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
  25
  26
  27 @SpringBootTest(
  28                 properties = {
  29                                 "spring.kafka.consumer.bootstrap-servers=${spring.embedded.kafka.brokers}",
  30                                 "producer.bootstrap-server=${spring.embedded.kafka.brokers}",
  31                                 "producer.topic=" + TOPIC})
  32 @AutoConfigureMockMvc
  33 @EmbeddedKafka(topics = TOPIC, partitions = PARTITIONS)
  34 @Slf4j
  35 public class ApplicationTests
  36 {
  37         static final String TOPIC = "FOO";
  38         static final int PARTITIONS = 10;
  39
  40         @Autowired
  41         MockMvc mockMvc;
  42         @Autowired
  43         Consumer consumer;
  44
  45
  46         @BeforeEach
  47         public void clear()
  48         {
  49                 consumer.received.clear();
  50         }
  51
  52
  53         @Test
  54         void testSendMessage() throws Exception
  55         {
  56                 mockMvc
  57                                 .perform(post("/peter").content("Hallo Welt!"))
  58                                 .andExpect(status().isOk());
  59                 await("Message was send")
  60                                 .atMost(Duration.ofSeconds(5))
  61                                 .until(() -> consumer.received.size() == 1);
  62         }
  63
  64
  65         static class Consumer
  66         {
  67                 final List<ConsumerRecord<String, String>> received = new LinkedList<>();
  68
  69                 @KafkaListener(groupId = "TEST", topics = TOPIC)
  70                 public void receive(ConsumerRecord<String, String> record)
  71                 {
  72                         log.debug("Received message: {}", record);
  73                         received.add(record);
  74                 }
  75         }
  76
  77         @TestConfiguration
  78         static class Configuration
  79         {
  80                 @Bean
  81                 Consumer consumer()
  82                 {
  83                         return new Consumer();
  84                 }
  85         }
  86 }