Unit Testing Kafka Streams

Anuj Saxena shows us how to build mocks for streams in Kafka Streams:

Here, we are using Kafka streams in our applications. We are done with the implementation but again, the most important thing left is testing. This blog is about how to test the application we have created. For this, I’ll be taking the sample app I created in my previous blog for both high-level DSL and low-level processor API.

Traditionally, we test our Kafka application with an integration test for which we need to create a ZooKeeper and a real Kafka broker. After that, we need a mock producer and mock consumer for our app to produce the inputs and receive the outputs. That makes it such a big hassle just to test our app. Testing it for real scenarios and for the actual integration test, this is needed without a doubt.

Click through for an example.

Related Posts

Anomaly Detection With Kafka Streams

Ajmal Karuthakantakath shows us an application which performs fairly simple anomaly detection using Kafka Streams: The problem is in the banking loan payment domain, where customers have taken a loan and they need to make monthly payments to repay the loan amount. Assume there are millions of customers in the system and all these customers need […]

Read More

Crossing The Streams With Kafka

Himani Arora shows how to join two Kafka streams together: KStream-KStream Join It is a sliding window join, that means, all tuples close to each other with regard to time are joined. Time here is the difference up to size of the window. These joins are always windowed joins because otherwise, the size of the internal state […]

Read More

Categories

August 2017
MTWTFSS
« Jul Sep »
 123456
78910111213
14151617181920
21222324252627
28293031