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 testSendClientMessage() 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         @Test
  65         void testSendFooMessage() throws Exception
  66         {
  67                 mockMvc
  68                                 .perform(put("/peter"))
  69                                 .andExpect(status().isOk());
  70                 await("Message was send")
  71                                 .atMost(Duration.ofSeconds(5))
  72                                 .until(() -> consumer.received.size() == 1);
  73         }
  74
  75         @Test
  76         void testSendGreeting() throws Exception
  77         {
  78                 mockMvc
  79                                 .perform(post("/").content("peter"))
  80                                 .andExpect(status().isOk());
  81                 await("Message was send")
  82                                 .atMost(Duration.ofSeconds(5))
  83                                 .until(() -> consumer.received.size() == 1);
  84         }
  85
  86
  87         static class Consumer
  88         {
  89                 final List<ConsumerRecord<String, String>> received = new LinkedList<>();
  90
  91                 @KafkaListener(groupId = "TEST", topics = TOPIC)
  92                 public void receive(ConsumerRecord<String, String> record)
  93                 {
  94                         log.debug("Received message: {}", record);
  95                         received.add(record);
  96                 }
  97         }
  98
  99         @TestConfiguration
 100         static class Configuration
 101         {
 102                 @Bean
 103                 Consumer consumer()
 104                 {
 105                         return new Consumer();
 106                 }
 107         }
 108 }