Jukka Karvanen created KAFKA-8233:
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Summary: Helper class to make it simpler to write test logic
TopologyTestDriver
Key: KAFKA-8233
URL: https://issues.apache.org/jira/browse/KAFKA-8233
Project: Kafka
Issue Type: Improvement
Components: streams
Reporter: Jukka Karvanen
When using TopologyTestDriver you need to call ConsumerRecordFactory to create
ConsumerRecord passed into pipeInput method to write to topic. Also when
calling readOutput to consume from topic, you need to provide correct
Deserializers each time.
You easily end up writing helper methods in your test classed, but this can be
avoided when adding generic input and output topic classes.
This improvement adds TestInputTopic class which wraps TopologyTestDriver and
ConsumerRecordFactory methods as one class to be used to write to Input Topics
and TestOutputTopic class which collects TopologyTestDriver reading methods
and provide typesafe read methods.
Example of how Stream test looks after using this classes:
[https://github.com/jukkakarvanen/kafka-streams-examples/blob/InputOutputTopic/src/test/java/io/confluent/examples/streams/WordCountLambdaExampleTest.java]
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