I would like to test an external Axon command-handler. It’s getting via constructor DI an Axon-Repository.

This test-case should be as minimalistic and fast, as possible. It should test, whether on a given command, given Events were executed.

class QualificationCommandHandlingTests {

private val fixture = AggregateTestFixture(CreateQualificationHandler::class.java)

    @Test
    fun `Test Qualification Command Handling`() {
        val uuid = UUID.randomUUID()
        val title = "New Qualification"
        fixture
            .given()
            .`when`(CreateQualification(uuid.toString(), title))
            .expectSuccessfulHandlerExecution()
            .expectEvents(QualificationCreated(uuid, title))
    }
}


@Component
class CreateQualificationHandler(val qualificationRepository: Repository<Qualification>) {

    @CommandHandler
    fun handle(createQualification: CreateQualification) {
        qualificationRepository.newInstance {
            Qualification.create(UUID.fromString(createQualification.uuid), createQualification.title)
        }
    }

}

Problem is, that whe are developing axon in a spring env, so the external command-handlers get injected with spring beans. (for example, the repo).

1. Problem: Given test case is failing, because axon is expecting an empty constructor. Is it possible, to inject the necessary dependencies myself, without creating a spring boot test?

2. What would be the minimalistic approach to test simple “event has been thrown as a result of command on aggregate” in a spring env? How could I mock in this layer, the necessary dependencies, as minimalistic, as possible?