hard20 pts · first answer countsevent-driven-testingtestcontainers

Testing an event consumer

An order service publishes an OrderPlaced event; a consumer sends an email. How should you test the consumer most effectively?

A.Only through a full UI test that places an order and checks a real inboxB.Sleep 30 seconds after publishing, then check the emailC.Test the consumer in isolation by publishing a test event to a real broker in a container (for example with Testcontainers) and asserting on the side effect with polling, plus a contract for the event shapeD.Skip testing; events are fire-and-forget

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Testing an event consumer

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