using mockito-kotlin (https://github.com/nhaarman/mockito-kotlin) how can I mock the method:

public <T> ResponseEntity<T> exchange(RequestEntity<?> requestEntity, ParameterizedTypeReference<T> responseType)

What seems to be the problem?

I am just struggling with generics and syntax:

val mockRestTemplate = mock<RestTemplate> {
            val r : ElasticResult<Map<String, Any>>
            on { exchange(any<RequestEntity<String>>(), any<ParameterizedTypeReference<ElasticResult<Map<String, Any>>>>()) }
        }

looks OK, but how do I specify

doReturn r

?

the syntax is

on { methodCall() } doReturn result

val result = mock<ElasticResult<Map<String, Any>>> {}
        val mockRestTemplate = mock<RestTemplate> {
            on { exchange(any<RequestEntity<String>>(),
                    any<ParameterizedTypeReference<ElasticResult<Map<String, Any>>>>()) } doReturn result
        }

gives

Error:(29, 91) Kotlin: None of the following functions can be called with the arguments supplied: 
public infix fun <T> OngoingStubbing<???>.doReturn(t: ???): OngoingStubbing<???> defined in com.nhaarman.mockito_kotlin
public fun <T> OngoingStubbing<???>.doReturn(t: ???, vararg ts: ???): OngoingStubbing<???> defined in com.nhaarman.mockito_kotlin
public infix inline fun <reified T> OngoingStubbing<ResponseEntity<ElasticResult<Map<String, Any>>!>!>.doReturn(ts: List<ResponseEntity<ElasticResult<Map<String, Any>>!>!>): OngoingStubbing<ResponseEntity<ElasticResult<Map<String, Any>>!>!> defined in com.nhaarman.mockito_kotlin

Your

any<ParameterizedTypeReference<ElasticResult<Map<String, Any>>>>

is invalid, it should be

any<ParameterizedTypeReference<Map<String, Any>>>

er, no, the call I am trying to mock looks like this:

val request = RequestEntity<String>(body, <http://HttpMethod.POST|HttpMethod.POST>, endpoint)
val respType = object : ParameterizedTypeReference<ElasticResult<Map<String, Any>>>() {}
restTemplate.exchange(request, respType)

Then you need to modify

result

to

val result = mock<ResponseEntity<ElasticResult<Map<String, Any>>>>()

thanks!