Spring Boot + Kotlin annotation error(s) - spring-boot

Question

I have a Spring Boot 2.0.0.M2 (with WebFlux) application written in Kotlin.
I'm used to define/declare "annotations" for test cases in order to avoid some boilerplate configuration; something like:
import java.lang.annotation.ElementType
import java.lang.annotation.Inherited
import java.lang.annotation.Retention
import java.lang.annotation.RetentionPolicy
import java.lang.annotation.Target
...
#Inherited
#Target(ElementType.TYPE)
#AutoConfigureWebTestClient // TODO: FTW this really does?!
#Retention(RetentionPolicy.RUNTIME)
//#kotlin.annotation.Target(AnnotationTarget.TYPE)
//#kotlin.annotation.Retention(AnnotationRetention.RUNTIME)
#ActiveProfiles(profiles = arrayOf("default", "test"))
#ContextConfiguration(classes = arrayOf(Application::class))
#SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
annotation class SpringWebFluxTest
...then in my tests I use it like:
#SpringWebFluxTest
#RunWith(SpringRunner::class)
class PersonWorkflowTest {
private lateinit var client: WebTestClient
...
The issue is that I can't achieve the same using the annotations provided by Kotlin:
#kotlin.annotation.Target(AnnotationTarget.TYPE)
#kotlin.annotation.Retention(AnnotationRetention.RUNTIME)
I'm getting a this annotation is not applicable to target 'class' inside PersonWorkflowTest. If I use the Java ones everything is fine, but on the other hand I get these warnings ― which what I'm really trying to get rid of :)
...
:compileTestKotlin
w: /home/gorre/Workshop/kotlin-spring-boot-reactive/src/test/kotlin/io/shido/annotations/SpringWebFluxTest.kt: (18, 1): This annotation is deprecated in Kotlin. Use '#kotlin.annotation.Target' instead
w: /home/gorre/Workshop/kotlin-spring-boot-reactive/src/test/kotlin/io/shido/annotations/SpringWebFluxTest.kt: (20, 1): This annotation is deprecated in Kotlin. Use '#kotlin.annotation.Retention' instead

Answer 1

kotlin has it own #kotlin.annotation.Retention and #kotlin.annotation.Target annotations. take a while to look the kotlin annotation documentation please.
Edit
I have test it in springframework that no problem. Note that have a distinction in #Target between java and kotlin.
the kotlin kotlin.annotation.#Target(AnnotationTarget.CLASS) is translated to:
#java.lang.annotation.Target(ElementType.TYPE);
and the kotlin kotlin.annotation.#Target(AnnotationTarget.TYPE) is translated to:
#java.lang.annotation.Target;
which means AnnotationTarget.TYPE don't supported for java. it just used in kotlin. so your own annotation should be like this:
//spring-test annotations
#ActiveProfiles(profiles = arrayOf("default", "test"))
#ContextConfiguration(classes = arrayOf(Application::class))
//spring-boot annotations
#SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
#AutoConfigureWebTestClient
//kotlin annotations
#Target(AnnotationTarget.CLASS)
#Retention(AnnotationRetention.RUNTIME)// can remove it default is RUNTIME
annotation class SpringWebFluxTest;