Mockk unmockk() method is not destroying mocks - kotlin

Question

I am running the following test code, but in some weird way I am not understanding it is not clearing the mocks in between the two tests.
I am getting environmentAsRequired as a return of repo.getClusterEnvironment(environmentName) on the second test instead of it throwing NoResultException() which causes the second test to fail because the exception I am asserting does not get thrown.
I have already verified and the method annotated with #BeforeEach is being called in between tests.
Anyone has any idea?
class ConfigUtilsTest {
#BeforeEach
fun start() {
MockKAnnotations.init(this)
val testModule = module() {
single { mockk<Repository>() }
single { mockk<AdminClient>() }
}
startKoin { modules(testModule) }
}
#AfterEach
fun stop() {
stopKoin()
unmockkAll()
}
#Test
fun `fetchOrCreateCluster creates the cluster if it is not on db but all required attributes are`() {
val environmentName = "environmentForCluster"
val clusterName = "NameForCluster"
val clusterURL = "UrlForCluster"
val environmentAsRequired = ClusterEnvironment(0, environmentName)
val expectedResult = Cluster(
clusterURL,
clusterName,
environmentAsRequired,
)
val repo = get(Repository::class.java)
every { repo.getCluster(clusterURL) } throws NoResultException()
every { repo.getClusterEnvironment(environmentName) } returns environmentAsRequired
fetchOrCreateCluster(
clusterName,
environmentName,
clusterURL
) shouldBe expectedResult
}
#Test
fun `fetchOrCreateCluster throws InvalidConfigException creating cluster if required attribute (environment) is not on DB`() {
val clusterName = "NameForCluster"
val clusterURL = "UrlForCluster"
val repo = get(Repository::class.java)
every { repo.getCluster(clusterURL) } throws NoResultException()
every { repo.getClusterEnvironment(environmentName) } throws NoResultException()
shouldThrow<InvalidConfigException> {
fetchOrCreateCluster(
clusterName,
environmentName,
clusterURL
)
}
}
}