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.assertj.core.api.Assertions;
   5 import org.junit.jupiter.api.*;
   6 import org.junit.jupiter.api.extension.ExtendWith;
   7 import org.springframework.beans.factory.annotation.Value;
   8 import org.springframework.kafka.test.context.EmbeddedKafka;
   9 import org.springframework.test.context.junit.jupiter.SpringExtension;
  10
  11 import java.time.Duration;
  12 import java.util.concurrent.CompletableFuture;
  13
  14 import static de.juplo.kafka.ApplicationTests.PARTITIONS;
  15 import static de.juplo.kafka.ApplicationTests.TOPIC;
  16 import static org.awaitility.Awaitility.*;
  17
  18
  19 @ExtendWith(SpringExtension.class)
  20 @EmbeddedKafka(
  21   topics = TOPIC,
  22   partitions = PARTITIONS,
  23   brokerProperties = {
  24     "transaction.state.log.replication.factor=1",
  25     "transaction.state.log.min.isr=1" })
  26 @Slf4j
  27 public class ApplicationTests
  28 {
  29         static final String TOPIC = "FOO";
  30         static final int PARTITIONS = 10;
  31
  32   @Value("${spring.embedded.kafka.brokers}")
  33   String bootstrapServers;
  34
  35         @Test
  36         void testConcurrentProducers() throws Exception
  37         {
  38     SimpleProducer instanceA = new SimpleProducer(
  39       bootstrapServers,
  40       TOPIC,
  41       "A");
  42     SimpleProducer instanceB = new SimpleProducer(
  43       bootstrapServers,
  44       TOPIC,
  45       "B");
  46
  47     CompletableFuture<Long> result;
  48
  49     instanceA.begin();
  50     result = instanceA.send("a","message #1");
  51     Assertions.assertThat(result.isCompletedExceptionally()).isFalse();
  52
  53     instanceB.begin();
  54     result = instanceB.send("b","message #1");
  55     Assertions.assertThat(result.isCompletedExceptionally()).isFalse();
  56
  57     result = instanceA.send("a","message #2");
  58     Assertions.assertThat(result.isCompletedExceptionally()).isTrue();
  59
  60     result = instanceB.send("b","message #2");
  61     Assertions.assertThat(result.isCompletedExceptionally()).isFalse();
  62   }
  63 }