@SpringBootTest

@DirtiesContext

@EmbeddedKafka(partitions = 1, bootstrapServersProperty = "spring.kafka.bootstrap-servers"})

@TestPropertySource(properties = "test.topic=<endTestTopic>")

public class ListeningEndTopicNameIT {

    @BeforeEach

    public void startServices() {

        ConfigurableApplicationContext serivceAContext = null;

        ConfigurableApplicationContext serviceBContext = null;

        // start service A

        Executors.newSingleThreadExecutor().execute(() -> {

            SpringApplication application = new SpringApplication(com.demo.servicea.Application.class);

            application.setAdditionalProfiles("serviceAProfile");

            serviceAContext = application.run();

        });

        //wait for service A to start

        while (serviceAContext == null || !serviceAContext.isRunning()) {

            Thread.sleep(1000);

        }

        // start service B

        Executors.newSingleThreadExecutor().execute(() -> {

            SpringApplication application = new SpringApplication(com.demo.serviceb.Application.class);

            application.setAdditionalProfiles("serviceBProfile");

            serviceBContext = application.run();

        });

        // wait for service B to start

        while (serviceBContext == null || !serviceBContext.isRunning()) {

            Thread.sleep(1000);

        }

    }

    @AfterEach

    public void cleanTestState() {

        serviceAContext.close();

        serviceBContext.close();

    }

    @Autowired

    private KafkaConsumer consumer;

    @Autowired

    private KafkaProducer producer;

    @Test

    public void verifyEventGeneratedInTopicCorrect() throws Exception {

        producer.send("<topicBeingListenedTo>", "payload");

        consumer.getLatch().await(1, TimeUnit.MINUTES); // 1 minute time out

        assertThat(consumer.getLatch().getCount(), equalTo(0L));

        byte[] recordBytes = consumer.getRecordValue();

        assertNotNull(recordBytes)

    }