Run all tests:

./mvnw clean install -DskipIntegrationTests=false 

1. kafka-streams-test-utils for unit testing Topologies in streams-client module. Approach covers testing topologies (stateful & stateless processors) with different serdes including avro use-cases with confluent schema registry.
2. embedded-kafka-cluster for unit testing and IT kafka-client application in isolation.
3. test-containers for IT and end-to-end tests.
4. data-pipeline different approaches how to make IT tests.
5. e2e end-to-end test for data pipeline.

• Makefile
• update vers java 8 -> 12 !NB: Reflection use -> only java8 currently
• update vers junit 4 -> 5

• Confluent Platform and Apache Kafka Compatibility

• Apache Kafka. Developer guide. Testing
• Getting Your Feet Wet with Stream Processing – Part 2: Testing Your Streaming Application