Can not create mock of the final class, when Retryable is used

Question

I have spring boot application with kotlin, and the thing is: I can't mock 3rd party final class only when @Retryable is used. Here is my project:

@Component
class RestClient {
    fun getAllData() : List<String> = listOf("1") 
}

@Service
class MyService(val restClient: RestClient) {

    @Retryable(maxAttempts = 3)
    fun makeRestCall() : List<String> {
        return restClient.getAllData()       
    }   
}

So I would like to test two cases:

• when RestClient throws HttpClientErrorException.NotFound exception, makeRestCall() should return null (that is not supported by current implementation by that does not matter)
• when makeRestCall() is invoked - I would like to check with mockito that it is really invoked (no sense, but why can't I do it? )

Here is my test:

@EnableRetry
@RunWith(SpringRunner::class)
class TTest {

    @MockBean
    lateinit var restClient: RestClient

    @SpyBean
    lateinit var myService: MyService

    @Test
    fun `should throw exception`() {
        val notFoundException = mock<HttpClientErrorException.NotFound>()
        whenever(restClient.getAllData()).thenThrow(notFoundException)
    }

    @Test
    fun `method should be invoked`() {
        myService.makeRestCall()
        verify(myService).makeRestCall()
    }
}

In order to mock final class org.springframework.web.client.HttpClientErrorException.NotFound, I've added mockito-inline as dependency

   <dependency>
      <groupId>org.mockito</groupId>
      <artifactId>mockito-inline</artifactId>
      <version>3.1.0</version>
      <scope>test</scope>
   </dependency>

So, here is the problem:

when I run my tests with mockito-inline as dependency:

• test should throw exception - passes
• test method should be invoked - fails with exception :Argument passed to verify() is of type MyService$$EnhancerBySpringCGLIB$$222fb0be and is not a mock!

when I run my tests without mockito-inline as dependency:

• test should throw exception - fails with exception: Mockito cannot mock/spy because : final class
• test `method should be invoked - passes

when I run my tests without @EnableRetry - both tests passes, but I'm not able to test retry functionality

How can I deal with that?