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https://issues.apache.org/jira/browse/KAFKA-8233?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jukka Karvanen updated KAFKA-8233:
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Description:
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.
More info and an example of how Stream test looks after using this classes:
[https://github.com/jukkakarvanen/kafka-streams-test-topics]
was:
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]
> Helper class to make it simpler to write test logic with TopologyTestDriver
> ---------------------------------------------------------------------------
>
> Key: KAFKA-8233
> URL: https://issues.apache.org/jira/browse/KAFKA-8233
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Jukka Karvanen
> Priority: Minor
>
> 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.
>
> More info and an example of how Stream test looks after using this classes:
> [https://github.com/jukkakarvanen/kafka-streams-test-topics]
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