Apache Kafka - Real-time Stream Processing (Master Class) - How to test a Stream Processing Application

The video tutorial covers the essentials of unit testing Kafka streams applications, focusing on testing the stream topology. It discusses the challenges of testing with a Kafka cluster and introduces two approaches: using an embedded Kafka cluster for integration testing and the Topology Test Driver for unit testing. An example of calculating the clickthrough rate for an advertisement campaign is provided, demonstrating the process of refactoring code for better testability and defining test cases to validate the application's functionality.

Describe the steps involved in creating a topology for a Kafka streams application.

What are the four test cases defined for validating the Kafka streams application?

Why is it important to ensure that all test cases are executed in the same sequence as defined?