Kafka streams testing: A deep dive
День 4 / / Зал 2 / EN /Even though Kafka Streams "come bundled" with TopologyTestDriver, which makes streaming applications unit-testing quite enjoyable, it's not so simple: there are limitations and certain classes of defects that this technology is blind to. With integration tests, you can check the behavior of a real cluster but it's even less simple: we're entering a slippery road of asynchronous tests with timeouts, flakiness, and unsolvable questions.
Conclusion: you need to use both approaches and your head.
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