@Override
        public void hello(HelloRequest req, StreamObserver<HelloReply> responseObserver) {
            final HelloReply reply = HelloReply.newBuilder()
                                               .setMessage("Hello, " + req.getName())
                                               .build();
            responseObserver.onNext(reply);
            responseObserver.onCompleted();
        }
This uses {@link ArmeriaAutoConfiguration} for integration tests.
application-autoConfTest.yml will be loaded with minimal settings to make it work.
spring/boot3-autoconfigure/src/test/java/com/linecorp/armeria/spring/ArmeriaAutoConfigurationTest.java