Unit testing Spring application events helps you check that events are published and handled correctly. You can test event publishers and listeners without starting the whole Spring application. This skill uses JUnit 5 and Mockito to write simple and fast tests.
Developers who build Spring Boot services with events will find this useful. You can mock the event publisher, capture events, and verify listener behavior. It works for regular and async events.
You will learn step-by-step patterns. Add test dependencies, mock the publisher, and use ArgumentCaptor to inspect event data. These tests are reliable and run quickly.
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