How can i unit test a Kstream with an Kafka Binder?












0














i want to unit test an Kafka Stream Aggregate and i am totally confused which method to use.
I read about the TestSupportBinder but i do not think this is working in my case, therefore i use the KafkaEmbedded Method. This is how i initialize the embedded Kafka.



 @Before
public void setUp() throws Exception{

Map<String, Object> consumerProps = KafkaTestUtils.consumerProps("group-id", "false", embeddedKafka);

consumerProps.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
consumerProps.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
consumerProps.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);

DefaultKafkaConsumerFactory<Object, LoggerMessage> cf = new DefaultKafkaConsumerFactory<>(consumerProps);
consumer = cf.createConsumer();
embeddedKafka.consumeFromAnEmbeddedTopic(consumer, OUTPUT_TOPIC);
}


What i want to test is the following:



public interface Channels {
String LOGGER_IN_STREAM = "logger-topic-in-stream";
String LOGGER_IN = "logger-topic-in";
String LOGGERDATAVALIDATED_OUT = "loggerDataValidated-topic-out";

@Input(Channels.LOGGER_IN)
SubscribableChannel processMessage();

@Input(Channels.LOGGER_IN_STREAM)
KStream<Object, LoggerMessage> loggerKstreamIn();

@Output(Channels.LOGGERDATAVALIDATED_OUT)
MessageChannel validateLoggerData();
}


And i get following error message




org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'some.domain.Channels': Invocation of init method failed; nested exception is java.lang.IllegalStateException: No factory found for binding target type: org.apache.kafka.streams.kstream.KStream among registered factories: channelFactory,messageSourceFactory



Caused by: java.lang.IllegalStateException: No factory found for binding target type: org.apache.kafka.streams.kstream.KStream among registered factories: channelFactory,messageSourceFactory




What am i doing wrong?










share|improve this question
























  • Is Kafka Streams binder on the class path? If you can share a small sample project on Github, we can take a look.
    – sobychacko
    Nov 13 '18 at 23:01










  • Yes kafka Streams binder is on the classpath in version 2.0.1.Release. Overall i am using springbootVersion 2.0.6. I can not share a sample project, i would have to alter almost everthying. Any more clues where i can start to look?
    – axelDiterta
    Nov 14 '18 at 6:27


















0














i want to unit test an Kafka Stream Aggregate and i am totally confused which method to use.
I read about the TestSupportBinder but i do not think this is working in my case, therefore i use the KafkaEmbedded Method. This is how i initialize the embedded Kafka.



 @Before
public void setUp() throws Exception{

Map<String, Object> consumerProps = KafkaTestUtils.consumerProps("group-id", "false", embeddedKafka);

consumerProps.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
consumerProps.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
consumerProps.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);

DefaultKafkaConsumerFactory<Object, LoggerMessage> cf = new DefaultKafkaConsumerFactory<>(consumerProps);
consumer = cf.createConsumer();
embeddedKafka.consumeFromAnEmbeddedTopic(consumer, OUTPUT_TOPIC);
}


What i want to test is the following:



public interface Channels {
String LOGGER_IN_STREAM = "logger-topic-in-stream";
String LOGGER_IN = "logger-topic-in";
String LOGGERDATAVALIDATED_OUT = "loggerDataValidated-topic-out";

@Input(Channels.LOGGER_IN)
SubscribableChannel processMessage();

@Input(Channels.LOGGER_IN_STREAM)
KStream<Object, LoggerMessage> loggerKstreamIn();

@Output(Channels.LOGGERDATAVALIDATED_OUT)
MessageChannel validateLoggerData();
}


And i get following error message




org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'some.domain.Channels': Invocation of init method failed; nested exception is java.lang.IllegalStateException: No factory found for binding target type: org.apache.kafka.streams.kstream.KStream among registered factories: channelFactory,messageSourceFactory



Caused by: java.lang.IllegalStateException: No factory found for binding target type: org.apache.kafka.streams.kstream.KStream among registered factories: channelFactory,messageSourceFactory




What am i doing wrong?










share|improve this question
























  • Is Kafka Streams binder on the class path? If you can share a small sample project on Github, we can take a look.
    – sobychacko
    Nov 13 '18 at 23:01










  • Yes kafka Streams binder is on the classpath in version 2.0.1.Release. Overall i am using springbootVersion 2.0.6. I can not share a sample project, i would have to alter almost everthying. Any more clues where i can start to look?
    – axelDiterta
    Nov 14 '18 at 6:27
















0












0








0







i want to unit test an Kafka Stream Aggregate and i am totally confused which method to use.
I read about the TestSupportBinder but i do not think this is working in my case, therefore i use the KafkaEmbedded Method. This is how i initialize the embedded Kafka.



 @Before
public void setUp() throws Exception{

Map<String, Object> consumerProps = KafkaTestUtils.consumerProps("group-id", "false", embeddedKafka);

consumerProps.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
consumerProps.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
consumerProps.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);

DefaultKafkaConsumerFactory<Object, LoggerMessage> cf = new DefaultKafkaConsumerFactory<>(consumerProps);
consumer = cf.createConsumer();
embeddedKafka.consumeFromAnEmbeddedTopic(consumer, OUTPUT_TOPIC);
}


What i want to test is the following:



public interface Channels {
String LOGGER_IN_STREAM = "logger-topic-in-stream";
String LOGGER_IN = "logger-topic-in";
String LOGGERDATAVALIDATED_OUT = "loggerDataValidated-topic-out";

@Input(Channels.LOGGER_IN)
SubscribableChannel processMessage();

@Input(Channels.LOGGER_IN_STREAM)
KStream<Object, LoggerMessage> loggerKstreamIn();

@Output(Channels.LOGGERDATAVALIDATED_OUT)
MessageChannel validateLoggerData();
}


And i get following error message




org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'some.domain.Channels': Invocation of init method failed; nested exception is java.lang.IllegalStateException: No factory found for binding target type: org.apache.kafka.streams.kstream.KStream among registered factories: channelFactory,messageSourceFactory



Caused by: java.lang.IllegalStateException: No factory found for binding target type: org.apache.kafka.streams.kstream.KStream among registered factories: channelFactory,messageSourceFactory




What am i doing wrong?










share|improve this question















i want to unit test an Kafka Stream Aggregate and i am totally confused which method to use.
I read about the TestSupportBinder but i do not think this is working in my case, therefore i use the KafkaEmbedded Method. This is how i initialize the embedded Kafka.



 @Before
public void setUp() throws Exception{

Map<String, Object> consumerProps = KafkaTestUtils.consumerProps("group-id", "false", embeddedKafka);

consumerProps.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
consumerProps.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
consumerProps.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);

DefaultKafkaConsumerFactory<Object, LoggerMessage> cf = new DefaultKafkaConsumerFactory<>(consumerProps);
consumer = cf.createConsumer();
embeddedKafka.consumeFromAnEmbeddedTopic(consumer, OUTPUT_TOPIC);
}


What i want to test is the following:



public interface Channels {
String LOGGER_IN_STREAM = "logger-topic-in-stream";
String LOGGER_IN = "logger-topic-in";
String LOGGERDATAVALIDATED_OUT = "loggerDataValidated-topic-out";

@Input(Channels.LOGGER_IN)
SubscribableChannel processMessage();

@Input(Channels.LOGGER_IN_STREAM)
KStream<Object, LoggerMessage> loggerKstreamIn();

@Output(Channels.LOGGERDATAVALIDATED_OUT)
MessageChannel validateLoggerData();
}


And i get following error message




org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'some.domain.Channels': Invocation of init method failed; nested exception is java.lang.IllegalStateException: No factory found for binding target type: org.apache.kafka.streams.kstream.KStream among registered factories: channelFactory,messageSourceFactory



Caused by: java.lang.IllegalStateException: No factory found for binding target type: org.apache.kafka.streams.kstream.KStream among registered factories: channelFactory,messageSourceFactory




What am i doing wrong?







spring junit apache-kafka apache-kafka-streams spring-cloud-stream






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edited Nov 13 '18 at 14:45









cricket_007

79.5k1142109




79.5k1142109










asked Nov 13 '18 at 6:30









axelDiterta

245




245












  • Is Kafka Streams binder on the class path? If you can share a small sample project on Github, we can take a look.
    – sobychacko
    Nov 13 '18 at 23:01










  • Yes kafka Streams binder is on the classpath in version 2.0.1.Release. Overall i am using springbootVersion 2.0.6. I can not share a sample project, i would have to alter almost everthying. Any more clues where i can start to look?
    – axelDiterta
    Nov 14 '18 at 6:27




















  • Is Kafka Streams binder on the class path? If you can share a small sample project on Github, we can take a look.
    – sobychacko
    Nov 13 '18 at 23:01










  • Yes kafka Streams binder is on the classpath in version 2.0.1.Release. Overall i am using springbootVersion 2.0.6. I can not share a sample project, i would have to alter almost everthying. Any more clues where i can start to look?
    – axelDiterta
    Nov 14 '18 at 6:27


















Is Kafka Streams binder on the class path? If you can share a small sample project on Github, we can take a look.
– sobychacko
Nov 13 '18 at 23:01




Is Kafka Streams binder on the class path? If you can share a small sample project on Github, we can take a look.
– sobychacko
Nov 13 '18 at 23:01












Yes kafka Streams binder is on the classpath in version 2.0.1.Release. Overall i am using springbootVersion 2.0.6. I can not share a sample project, i would have to alter almost everthying. Any more clues where i can start to look?
– axelDiterta
Nov 14 '18 at 6:27






Yes kafka Streams binder is on the classpath in version 2.0.1.Release. Overall i am using springbootVersion 2.0.6. I can not share a sample project, i would have to alter almost everthying. Any more clues where i can start to look?
– axelDiterta
Nov 14 '18 at 6:27














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I missed to inject my Channels Interface as a MockBean. After i did that everything worked as expected.






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    1 Answer
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    1 Answer
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    I missed to inject my Channels Interface as a MockBean. After i did that everything worked as expected.






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      I missed to inject my Channels Interface as a MockBean. After i did that everything worked as expected.






      share|improve this answer
























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        I missed to inject my Channels Interface as a MockBean. After i did that everything worked as expected.






        share|improve this answer












        I missed to inject my Channels Interface as a MockBean. After i did that everything worked as expected.







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        answered Nov 23 '18 at 13:05









        axelDiterta

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