Async, Events & Data — quiz

An Order Service publishes an `order.created` event to Kafka when an order is placed. How should a QA engineer verify the event was published with the correct payload?

• Check the Order Service's own database to confirm the order record was saved correctly
• After placing the order via the service API, consume from the Kafka topic in the test and assert on the event schema and payload values — this verifies the actual event that downstream consumers will receive
• Mock the Kafka producer at the code level and assert the mock was called with the right arguments
• Trust that a 201 Created HTTP response means the event was also published correctly