How to ignore ContextRefreshedEvent when SpringBootTest? - spring-boot

Question

I'm struggling to find out how to ignore a class method, which should start a thread when SpringBootApplication is ready, during normal operation:
#EventListener
public void onApplicationEvent(ContextRefreshedEvent event) {
this.start();
}
in case of testing I do not want such behavior, want to start it from test method.
As far as i understand ContextRefreshedEvent is triggered by #SpringBootTest annotation on test class.

Answer 1

For testing the listener itself:
You do not need #SpringBootTest for every test of Spring Boot application (I would argue that you want minimum of such tests actually as they load everything.)
There are other options:
If you don't need anything from Spring: Unit test the service with Mockito (if it has dependencies you want to mock away).
Otherwise: Use slices - for example #JsonTest will autoconfigure ObjectMapper and other beans for working with JSON. There's quite a few of them so check documentation if there's any part of application you would like to be autoconfigured for your test.
For excluding the listener from other #SpringBootTest tests:
I see two options:
Mocking the listener bean away using #MockBeans.
#SpringBootTest
#MockBeans(#MockBean(Listener.class))
public class SomeTest {
// ...
}
Executing tests inside a specific profile and mark the listener bean to be included only inside the default profile. (Or not inside the "test" profile.)
#Component
#Profile("default") // OR: #Profile("!test")
public class Listener {
// ...
}
#SpringBootTest
#ActiveProfiles("test")
public class SomeTest {
// ...
}
You might need to extract the listener from the existing bean if you need the bean as a dependency for another service though.