@lion7 thank you for the PR. The tests unfortunatelly fail, could you pls take a look, in case I can check too a bit later.

@csviri I altered the order a bit so the controllerManager is stopped before the executor, so the graceful shutdown keeps working properly.

Thank you @lion7 , could you pls also add an integration test for the base API:

https://github.com/operator-framework/java-operator-sdk/blob/589b7a6c8654cad13ff2317fddb51693fcd6d4c3/operator-framework/src/test/java/io/javaoperatorsdk/operator/baseapi

Where without the junit extension you just create an Operator with a reconiler (dummy) and stop it without start, just to check if this don't throw an exception. I think that is a bare minimum for this (beside some manual testing)

I added a unit test per your suggestion

The CI failures are related to some github networking issue (occured also before), I will re-run it bit later.