#Autowire repository works for Application yet fails in JUnitTest - spring

Question

I have a weird issue of #Autowire failing as the following:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'EventTargetRepositoryTest': Unsatisfied dependency expressed through field 'eventTargetRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'EventTargetRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
Funnily enough, this happens only on my test which uses the exactly same #Configuration.
#Service beans autowire perfectly in the actual application.
#Repository beans autowire perfectly in the actual application.
#Service beans autowire perfectly(??) in the JUnit Test.
#Repository beans fail to autowire in the JUnit Test.
Code is as follows(package structure omitted):
Test(which fails)
import CoreConfig
import EventTarget
import org.junit.Test
import org.junit.runner.RunWith
import org.slf4j.Logger
import org.slf4j.LoggerFactory
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.test.context.ContextConfiguration
import org.springframework.test.context.junit4.SpringRunner
#RunWith(SpringRunner::class)
#ContextConfiguration(classes = [CoreConfig::class])
class EventTargetRepositoryTest {
private val LOGGER: Logger = LoggerFactory.getLogger(EventTargetRepositoryTest::class.java)
#Autowired //not autowiring for some reason. needs fixing.
private lateinit var eventTargetRepository: EventTargetRepository
#Test
fun selectOne() {
var eventTarget = EventTarget()
eventTarget.id = 1
eventTargetRepository.selectOne(eventTarget)
LOGGER.info(eventTarget.userId)
}
}
Application(which runs fine, along with working repository)
import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
import org.springframework.boot.runApplication
#SpringBootApplication(scanBasePackages = ["com.omittedParentName"], exclude = [DataSourceAutoConfiguration::class])
class FrontendApplication
fun main(args: Array<String>) {
runApplication<FrontendApplication>()
}
Config(which the Test and Application both use)
import org.springframework.context.annotation.ComponentScan
import org.springframework.context.annotation.Configuration
import org.springframework.context.annotation.FilterType
import org.springframework.context.annotation.PropertySource
import org.springframework.stereotype.Component
import org.springframework.stereotype.Repository
import org.springframework.stereotype.Service
#ComponentScan(basePackages = ["com.omittedParentName"], useDefaultFilters = false,
includeFilters = [
ComponentScan.Filter(type = FilterType.ANNOTATION, value = [Service::class]),
ComponentScan.Filter(type = FilterType.ANNOTATION, value = [Component::class]),
ComponentScan.Filter(type = FilterType.ANNOTATION, value = [Repository::class]),
ComponentScan.Filter(type = FilterType.ANNOTATION, value = [Configuration::class])
])
#Configuration
#PropertySource("classpath:properties/core.properties")
class CoreConfig
repository
import EventTarget
import org.apache.ibatis.annotations.Mapper
import org.springframework.stereotype.Repository
#Mapper
#Repository
interface EventTargetRepository {
fun selectOne(eventTarget: EventTarget): EventTarget
}
mapper xml is irrelevant, so it's omitted.
As we can clearly see, the Test and Application literally use the same #Configuration. Aside from the fact that making all tests require applicationContext is bad structure, the test should work. Other beans like #Service work in the same tests, too.
Any help would be appreciated.
Please refrain from marking as duplicate unless it's a question of #Autowire failing only exclusively on #Repository for only on #Test yet working in release.