Quarkus: Usage of InjectMock on MicroProfile RestClient

[UrosOdateam]

Describe the bug
I am using InjectMock annotation to mock restClient in Microprofile Rest Client way in my test annotated with @QuarkusTest, content:

    @InjectMock
    @RestClient 
    GreetingService greetingService;

in test method:

    @Test
    public void testHelloEndpoint() {
        Mockito.when(greetingService.hello()).thenReturn("hello from server");

Rest client interface looks like this.. (notice I have added @ApplicationScoped)

@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.TEXT_PLAIN)
@RegisterProvider(value = RestClientLoggingMapper.class, priority = 50)
@Path("/")
@ApplicationScoped
@RegisterRestClient(configKey = "my-configkey-remote")
public interface GreetingService {

    @GET
    @Path("/hello")
    String hello();
}

application.properties have this line which could be relevant:
my-configkey-remote/mp-rest/scope=javax.inject.Singleton
Expected behavior
The mockito should mock Greeting service

Actual behavior

org.junit.jupiter.api.extension.TestInstantiationException: Failed to create test instance
Caused by: java.lang.reflect.InvocationTargetException
Caused by: org.mockito.exceptions.base.MockitoException:

Cannot mock/spy class com.sun.proxy.$Proxy57
Mockito cannot mock/spy because :
 - final class

Relates to this issue https://github.com/quarkusio/quarkus/issues/8622 with difference of
this annotation @RegisterRestClient(configKey = "my-configkey-remote")where the configKey is added.. If the annotation is plain, without configKey then this bug does not occur.

Environment (please complete the following information):

• Quarkus version or git rev: 1.4.2.Final

[UrosOdateam]

I have solved the problem.. It was in configuration - application.properties:
my-configkey-remote/mp-rest/scope=javax.inject.Singleton
which takes precedence before the @ApplicationScoped on the GreetingService interface

[geoand]

Nice catch