spring-kafka-test polling records from topics - spring-kafka

Question

I am using KafkaTestUtils to fetch the consumer records for validation along with other utilities which is handy, however I am seeing when I am making a call to KafkaTestUtils.getSingleRecord(..,...) which seems fetching all the records from the topic which was sent from other test methods (one example : verifyEmptinessErrorMessageInTopic()), and it's failing at the assertion at getSingleRecord method because the count is not 1. In my listener of actual business logic which is a manual ack and I do acknowledgment.acknowledge() to commit the offset but in test code, which seems fetching all records from the topic instead of last one. I also tried the consumer.commitsync() which normally do the offset commit and that's not working as well.
Am I missing any configuration in test util here? Thanks for the input.
private static KafkaTemplate<String, Object> kafkaTemplate;
private static Consumer<String, Object> consumerCardEventTopic;
private static Consumer<String, Object> consumerCardEventErrorTopic;
#BeforeClass
public static void setup() throws Exception {
// Producer Setup
Map<String, Object> producerConfig = KafkaTestUtility.producerProps(kafkaEmbedded);
ProducerFactory<String, Object> pf = new DefaultKafkaProducerFactory<>(producerConfig);
kafkaTemplate = new KafkaTemplate<>(pf);
// Consumer for cardEventTopic setup
Map<String, Object> consumerConfig =
KafkaTestUtils.consumerProps("cardEventGroup", "true", kafkaEmbedded);
consumerConfig.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
consumerConfig.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
ConsumerFactory<String, Object> cf = new DefaultKafkaConsumerFactory<>(consumerConfig);
consumerCardEventTopic = cf.createConsumer();
kafkaEmbedded.consumeFromAnEmbeddedTopic(consumerCardEventTopic, cardEventTopic);
// Consumer for cardEventErrorTopic setup
Map<String, Object> consumerConfigError =
KafkaTestUtils.consumerProps("cardEventErrorGroup", "true", kafkaEmbedded);
consumerConfigError.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
consumerConfigError.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
ConsumerFactory<String, Object> cf1 = new DefaultKafkaConsumerFactory<>(consumerConfigError);
consumerCardEventErrorTopic = cf1.createConsumer();
kafkaEmbedded.consumeFromAnEmbeddedTopic(consumerCardEventErrorTopic, cardEventErrorTopic);
}
#Test
public void verifyProcessedSuccessfully() {
kafkaTemplate.send(cardEventTopic, accountValid());
ConsumerRecord<String, Object> received =
KafkaTestUtils.getSingleRecord(consumerCardEventTopic,cardEventTopic);
assertThat(received).isNotNull();
assertThat(received.value()).isInstanceOf(String.class);
}
#Test
public void verifyEmptinessErrorMessageInTopic() {
kafkaTemplate.send(cardEventTopic, accountInValid());
ConsumerRecord<String, Object> received =
KafkaTestUtils.getSingleRecord(consumerCardEventErrorTopic,cardEventErrorTopic);
assertThat(received).isNotNull();
consumerCardEventTopic.commitSync();
}
#Test
public void testMethod3(){
}
#Test
public void testMethod4(){
}