Any ideas why the following is failing with

Could not create instance of class com.missionlane.directmail.service.DmUploadServiceTests. Specs must have a public zero-arg constructor.

@SpringBootTest(classes = [DmUserRepository::class])
class DmUploadServiceTests(val dmUserRepository: DmUserRepository) : StringSpec({
    "dmUserRepository should be autowired" {
        dmUserRepository.shouldNotBeNull()
    }
})

I'm using spring extension v4.4.3

its a very old version, but... Do you have the constructor extension installed?

ah interesting. I pull it from here. But here it looks like 1.2.0 is the latest