No Issue : Refactor test codes and Remove useless full package name

* Refactor test codes and remove useless full package names.

* Remove useless comments.

* Fixes lint error.

* Modify wrong description.

spring-kafka-test/src/main/java/org/springframework/kafka/test/utils/KafkaTestUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2022 the original author or authors.
+ * Copyright 2016-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -44,6 +44,7 @@
 import org.apache.kafka.common.serialization.IntegerSerializer;
 import org.apache.kafka.common.serialization.StringDeserializer;
 import org.apache.kafka.common.serialization.StringSerializer;
+import org.apache.kafka.streams.StreamsConfig;
 
 import org.springframework.beans.DirectFieldAccessor;
 import org.springframework.core.log.LogAccessor;
@@ -57,6 +58,7 @@
  * @author Gary Russell
  * @author Hugo Wood
  * @author Artem Bilan
+ * @author Sanghyeok An
  */
 public final class KafkaTestUtils {
 
@@ -82,6 +84,17 @@ public static Map<String, Object> consumerProps(String group, String autoCommit,
 		return consumerProps(embeddedKafka.getBrokersAsString(), group, autoCommit);
 	}
 
+	/**
+	 * Set up test properties for an {@code <Integer, String>} consumer.
+	 * @param brokers the bootstrapServers property.
+	 * @param group the group id.
+	 * @return the properties.
+	 * @since 3.3
+	 */
+	public static Map<String, Object> consumerProps(String brokers, String group) {
+		return consumerProps(brokers, group, "false");
+	}
+
 	/**
 	 * Set up test properties for an {@code <Integer, String>} producer.
 	 * @param embeddedKafka a {@link EmbeddedKafkaBroker} instance.
@@ -128,6 +141,20 @@ public static Map<String, Object> producerProps(String brokers) {
 		return props;
 	}
 
+	/**
+	 * Set up test properties for the Kafka Streams.
+	 * @param applicationId the applicationId for the Kafka Streams.
+	 * @param brokers the bootstrapServers property.
+	 * @return the properties.
+	 * @since 3.3
+	 */
+	public static Map<String, Object> streamsProps(String applicationId, String brokers) {
+		Map<String, Object> props = new HashMap<>();
+		props.put(StreamsConfig.APPLICATION_ID_CONFIG, applicationId);
+		props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, brokers);
+		return props;
+	}
+
 	/**
 	 * Poll the consumer, expecting a single record for the specified topic.
 	 * @param consumer the consumer.

spring-kafka/src/main/java/org/springframework/kafka/listener/adapter/MessagingMessageListenerAdapter.java

@@ -91,6 +91,7 @@
  * @author Wang ZhiYang
  * @author Huijin Hong
  * @author Soby Chacko
+ * @author Sanghyeok An
  */
 public abstract class MessagingMessageListenerAdapter<K, V> implements ConsumerSeekAware, AsyncRepliesAware {
 
@@ -421,7 +422,7 @@ else if (this.hasMetadataParameter) {
 				return this.handlerMethod.invoke(message, data, ack, consumer);
 			}
 		}
-		catch (org.springframework.messaging.converter.MessageConversionException ex) {
+		catch (MessageConversionException ex) {
 			throw checkAckArg(ack, message, new MessageConversionException("Cannot handle message", ex));
 		}
 		catch (MethodArgumentNotValidException ex) {

spring-kafka/src/test/java/org/springframework/kafka/config/KafkaStreamsCustomizerTests.java

@@ -19,7 +19,6 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
 import java.util.Collections;
-import java.util.HashMap;
 import java.util.Map;
 import java.util.Properties;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -49,6 +48,7 @@
 import org.springframework.kafka.streams.KafkaStreamsMicrometerListener;
 import org.springframework.kafka.test.EmbeddedKafkaBroker;
 import org.springframework.kafka.test.context.EmbeddedKafka;
+import org.springframework.kafka.test.utils.KafkaTestUtils;
 import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
 
@@ -60,6 +60,7 @@
  * @author Nurettin Yilmaz
  * @author Artem Bilan
  * @author Almog Gavra
+ * @author Sanghyeok An
  *
  * @since 2.1.5
  */
@@ -90,7 +91,7 @@ public void testKafkaStreamsCustomizer(@Autowired KafkaStreamsConfiguration conf
 		assertThat(STATE_LISTENER.getCurrentState()).isEqualTo(state);
 		Properties properties = configuration.asProperties();
 		assertThat(properties.get(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG))
-				.isEqualTo(Collections.singletonList(config.broker.getBrokersAsString()));
+				.isEqualTo(config.broker.getBrokersAsString());
 		assertThat(properties.get(StreamsConfig.DEFAULT_DESERIALIZATION_EXCEPTION_HANDLER_CLASS_CONFIG))
 				.isEqualTo(Foo.class);
 		assertThat(properties.get(StreamsConfig.CACHE_MAX_BYTES_BUFFERING_CONFIG))
@@ -163,10 +164,8 @@ public void configureTopology(Topology topology) {
 		@SuppressWarnings("deprecation")
 		@Bean(name = KafkaStreamsDefaultConfiguration.DEFAULT_STREAMS_CONFIG_BEAN_NAME)
 		public KafkaStreamsConfiguration kStreamsConfigs() {
-			Map<String, Object> props = new HashMap<>();
-			props.put(StreamsConfig.APPLICATION_ID_CONFIG, APPLICATION_ID);
-			props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG,
-					Collections.singletonList(this.broker.getBrokersAsString()));
+			Map<String, Object> props =
+					KafkaTestUtils.streamsProps(APPLICATION_ID, this.broker.getBrokersAsString());
 			props.put(StreamsConfig.DEFAULT_DESERIALIZATION_EXCEPTION_HANDLER_CLASS_CONFIG, Foo.class);
 			props.put(StreamsConfig.CACHE_MAX_BYTES_BUFFERING_CONFIG, 1000);
 			return new KafkaStreamsConfiguration(props);

spring-kafka/src/test/java/org/springframework/kafka/retrytopic/ExistingRetryTopicClassLevelIntegrationTests.java

@@ -53,6 +53,7 @@
 import org.springframework.kafka.support.KafkaHeaders;
 import org.springframework.kafka.test.EmbeddedKafkaBroker;
 import org.springframework.kafka.test.context.EmbeddedKafka;
+import org.springframework.kafka.test.utils.KafkaTestUtils;
 import org.springframework.messaging.handler.annotation.Header;
 import org.springframework.retry.annotation.Backoff;
 import org.springframework.scheduling.TaskScheduler;
@@ -67,6 +68,7 @@
  * Tests for <a href="https://github.com/spring-projects/spring-kafka/issues/1828">...</a>
  *
  * @author Wang Zhiyang
+ * @author Sanghyeok An
  *
  * @since 3.2
  */
@@ -284,9 +286,7 @@ static class KafkaProducerConfig {
 
 		@Bean
 		ProducerFactory<String, String> producerFactory() {
-			Map<String, Object> configProps = new HashMap<>();
-			configProps.put(
-					ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,
+			Map<String, Object> configProps = KafkaTestUtils.producerProps(
 					this.broker.getBrokersAsString());
 			configProps.put(
 					ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
@@ -319,13 +319,8 @@ KafkaAdmin kafkaAdmin() {
 
 		@Bean
 		ConsumerFactory<String, String> consumerFactory() {
-			Map<String, Object> props = new HashMap<>();
-			props.put(
-					ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,
-					this.broker.getBrokersAsString());
-			props.put(
-					ConsumerConfig.GROUP_ID_CONFIG,
-					"groupId");
+			Map<String, Object> props = KafkaTestUtils.consumerProps(
+					this.broker.getBrokersAsString(), "groupId");
 			props.put(
 					ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,
 					StringDeserializer.class);

spring-kafka/src/test/java/org/springframework/kafka/retrytopic/ExistingRetryTopicIntegrationTests.java

@@ -54,6 +54,7 @@
 import org.springframework.kafka.support.KafkaHeaders;
 import org.springframework.kafka.test.EmbeddedKafkaBroker;
 import org.springframework.kafka.test.context.EmbeddedKafka;
+import org.springframework.kafka.test.utils.KafkaTestUtils;
 import org.springframework.messaging.handler.annotation.Header;
 import org.springframework.retry.annotation.Backoff;
 import org.springframework.scheduling.TaskScheduler;
@@ -67,6 +68,7 @@
 /**
  * Tests for https://github.com/spring-projects/spring-kafka/issues/1828
  * @author Deepesh Verma
+ * @author Sanghyeok An
  * @since 2.7
  */
 @SpringJUnitConfig
@@ -276,9 +278,7 @@ public static class KafkaProducerConfig {
 
 		@Bean
 		public ProducerFactory<String, String> producerFactory() {
-			Map<String, Object> configProps = new HashMap<>();
-			configProps.put(
-					ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,
+			Map<String, Object> configProps = KafkaTestUtils.producerProps(
 					this.broker.getBrokersAsString());
 			configProps.put(
 					ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
@@ -311,13 +311,8 @@ public KafkaAdmin kafkaAdmin() {
 
 		@Bean
 		public ConsumerFactory<String, String> consumerFactory() {
-			Map<String, Object> props = new HashMap<>();
-			props.put(
-					ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,
-					this.broker.getBrokersAsString());
-			props.put(
-					ConsumerConfig.GROUP_ID_CONFIG,
-					"groupId");
+			Map<String, Object> props = KafkaTestUtils.consumerProps(
+					this.broker.getBrokersAsString(), "groupId");
 			props.put(
 					ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,
 					StringDeserializer.class);

spring-kafka/src/test/java/org/springframework/kafka/retrytopic/RetryTopicClassLevelExceptionRoutingIntegrationTests.java

@@ -53,6 +53,7 @@
 import org.springframework.kafka.support.converter.ConversionException;
 import org.springframework.kafka.test.EmbeddedKafkaBroker;
 import org.springframework.kafka.test.context.EmbeddedKafka;
+import org.springframework.kafka.test.utils.KafkaTestUtils;
 import org.springframework.messaging.handler.annotation.Header;
 import org.springframework.retry.annotation.Backoff;
 import org.springframework.scheduling.TaskScheduler;
@@ -66,6 +67,7 @@
  * Test class level non-blocking retries.
  *
  * @author Wang Zhiyang
+ * @author Sanghyeok An
  *
  * @since 3.2
  */
@@ -417,9 +419,7 @@ static class KafkaProducerConfig {
 
 		@Bean
 		ProducerFactory<String, String> producerFactory() {
-			Map<String, Object> configProps = new HashMap<>();
-			configProps.put(
-					ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,
+			Map<String, Object> configProps = KafkaTestUtils.producerProps(
 					this.broker.getBrokersAsString());
 			configProps.put(
 					ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
@@ -452,13 +452,8 @@ KafkaAdmin kafkaAdmin() {
 
 		@Bean
 		ConsumerFactory<String, String> consumerFactory() {
-			Map<String, Object> props = new HashMap<>();
-			props.put(
-					ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,
-					this.broker.getBrokersAsString());
-			props.put(
-					ConsumerConfig.GROUP_ID_CONFIG,
-					"groupId");
+			Map<String, Object> props = KafkaTestUtils.consumerProps(
+					this.broker.getBrokersAsString(), "groupId");
 			props.put(
 					ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,
 					StringDeserializer.class);

spring-kafka/src/test/java/org/springframework/kafka/retrytopic/RetryTopicClassLevelIntegrationTests.java

@@ -75,6 +75,7 @@
 import org.springframework.kafka.support.KafkaHeaders;
 import org.springframework.kafka.test.EmbeddedKafkaBroker;
 import org.springframework.kafka.test.context.EmbeddedKafka;
+import org.springframework.kafka.test.utils.KafkaTestUtils;
 import org.springframework.messaging.Message;
 import org.springframework.messaging.converter.CompositeMessageConverter;
 import org.springframework.messaging.converter.GenericMessageConverter;
@@ -738,9 +739,7 @@ static class KafkaProducerConfig {
 
 		@Bean
 		ProducerFactory<String, String> producerFactory() {
-			Map<String, Object> configProps = new HashMap<>();
-			configProps.put(
-					ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,
+			Map<String, Object> configProps = KafkaTestUtils.producerProps(
 					this.broker.getBrokersAsString());
 			configProps.put(
 					ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
@@ -783,13 +782,8 @@ NewTopics topics() {
 
 		@Bean
 		ConsumerFactory<String, String> consumerFactory() {
-			Map<String, Object> props = new HashMap<>();
-			props.put(
-					ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,
-					this.broker.getBrokersAsString());
-			props.put(
-					ConsumerConfig.GROUP_ID_CONFIG,
-					"groupId");
+			Map<String, Object> props = KafkaTestUtils.consumerProps(
+					this.broker.getBrokersAsString(), "groupId");
 			props.put(
 					ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,
 					StringDeserializer.class);

spring-kafka/src/test/java/org/springframework/kafka/retrytopic/RetryTopicExceptionRoutingIntegrationTests.java

@@ -54,6 +54,7 @@
 import org.springframework.kafka.support.converter.ConversionException;
 import org.springframework.kafka.test.EmbeddedKafkaBroker;
 import org.springframework.kafka.test.context.EmbeddedKafka;
+import org.springframework.kafka.test.utils.KafkaTestUtils;
 import org.springframework.messaging.handler.annotation.Header;
 import org.springframework.retry.annotation.Backoff;
 import org.springframework.scheduling.TaskScheduler;
@@ -66,6 +67,7 @@
 /**
  * @author Tomaz Fernandes
  * @author Wang Zhiyang
+ * @author Sanghyeok An
  *
  * @since 2.8.4
  */
@@ -431,9 +433,7 @@ public static class KafkaProducerConfig {
 
 		@Bean
 		public ProducerFactory<String, String> producerFactory() {
-			Map<String, Object> configProps = new HashMap<>();
-			configProps.put(
-					ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,
+			Map<String, Object> configProps = KafkaTestUtils.producerProps(
 					this.broker.getBrokersAsString());
 			configProps.put(
 					ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
@@ -466,13 +466,8 @@ public KafkaAdmin kafkaAdmin() {
 
 		@Bean
 		public ConsumerFactory<String, String> consumerFactory() {
-			Map<String, Object> props = new HashMap<>();
-			props.put(
-					ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,
-					this.broker.getBrokersAsString());
-			props.put(
-					ConsumerConfig.GROUP_ID_CONFIG,
-					"groupId");
+			Map<String, Object> props = KafkaTestUtils.consumerProps(
+					this.broker.getBrokersAsString(), "groupId");
 			props.put(
 					ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,
 					StringDeserializer.class);

spring-kafka/src/test/java/org/springframework/kafka/retrytopic/RetryTopicIntegrationTests.java

@@ -76,6 +76,7 @@
 import org.springframework.kafka.support.KafkaHeaders;
 import org.springframework.kafka.test.EmbeddedKafkaBroker;
 import org.springframework.kafka.test.context.EmbeddedKafka;
+import org.springframework.kafka.test.utils.KafkaTestUtils;
 import org.springframework.messaging.Message;
 import org.springframework.messaging.converter.CompositeMessageConverter;
 import org.springframework.messaging.converter.GenericMessageConverter;
@@ -765,9 +766,7 @@ public static class KafkaProducerConfig {
 
 		@Bean
 		public ProducerFactory<String, String> producerFactory() {
-			Map<String, Object> configProps = new HashMap<>();
-			configProps.put(
-					ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,
+			Map<String, Object> configProps = KafkaTestUtils.producerProps(
 					this.broker.getBrokersAsString());
 			configProps.put(
 					ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
@@ -810,13 +809,8 @@ public NewTopics topics() {
 
 		@Bean
 		public ConsumerFactory<String, String> consumerFactory() {
-			Map<String, Object> props = new HashMap<>();
-			props.put(
-					ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,
-					this.broker.getBrokersAsString());
-			props.put(
-					ConsumerConfig.GROUP_ID_CONFIG,
-					"groupId");
+			Map<String, Object> props = KafkaTestUtils.consumerProps(
+					this.broker.getBrokersAsString(), "groupId");
 			props.put(
 					ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,
 					StringDeserializer.class);