Spring test #Transactional with #Nested junit classes - spring

Question

I am encountering a problem in spring transactions: even though I see in the output that a transaction is created and rolled back after each test method; when I check the database content, it still keeps the document that was saved during the transaction.
I ran mongodb instance in replica mode following instructions from here https://www.mongodb.com/docs/manual/tutorial/deploy-replica-set-for-testing/.
My test class is defined as follows:
#Transactional
#AutoConfigureMockMvc
#ActiveProfiles(profiles = ["test"])
#DisplayName("Login Functionality Test")
#SpringBootTest(classes = [TestConfiguration::class])
class LoginFunctionalityTest #Autowired constructor(
private val mockMvc: MockMvc,
private val userRepository: UserRepository,
private val openUserRepository: OpenUserRepository,
private val patientRepository: PatientRepository,
private val passwordEncoder: PasswordEncoder,
private val jwtMatcher: JWTMatcher,
#Value("\${secret:sD1fRUWtBdfA8BNcbf}") private val fastLoginSecret: String
) {
private val existingUsersPassword = "SOME_PASSWORD"
private val userFastLoginTokenSecret = "ANY_SECRET"
private lateinit var existingUser: User
private lateinit var existingOpenUser: OpenUser
private lateinit var existingPatient: Patient
#BeforeEach
fun prepareContext() {
println("Init db")
existingUser = userRepository.save(User(null, now(), "test", "test", "test#test.test", passwordEncoder.encode(existingUsersPassword), UserAuthority.Patient, true, true))
existingOpenUser = openUserRepository.save(OpenUser(null, "ANY", nextExpiryDate()))
existingPatient = patientRepository.save(Patient(null, existingUser))
}
#DisplayName("Login Controller")
#Nested
inner class LoginControllerTest{
#Test
fun `should return unauthorized 401 status code when user logins with not existing email`() {
val invalidEmail = "INVALID_EMAIL"
assertThrows<EmptyResultDataAccessException> { userRepository.findByEmail(invalidEmail) }
mockMvc.post("/auth/login") {
param("username", invalidEmail)
param("password", existingUsersPassword)
}.andExpect {
jsonPath("$.status", equalToIgnoringCase(HttpStatus.UNAUTHORIZED.name))
jsonPath("$.error",StringContains(true,"Invalid login credentials"))
jsonPath("$.data", nullValue())
status { isUnauthorized() }
}
}
...
}
#ActiveProfiles(profiles = ["open-user"])
#DisplayName("Open User Login Controller")
#Nested
inner class OpenUserControllerLoginTest(){
#Test
fun `should return bad request 400 status when any of the required login parameters are missing`(){
val validFastLoginToken = String(Base64.getEncoder().encode(passwordEncoder.encode("$userFastLoginTokenSecret${existingUser.passwordHash}$fastLoginSecret").toByteArray()))
mockMvc
.post("/auth/login/fast") {
param("userId", existingUser.id!!)
param("secret", userFastLoginTokenSecret)
param("fastLoginToken", validFastLoginToken)
}.andExpect {
jsonPath("$.data.isUserActivated", equalTo(existingUser.activated))
jsonPath("$.data.accessToken",jwtMatcher.matches(existingUser))
jsonPath("$.status", equalToIgnoringCase(HttpStatus.OK.name))
jsonPath("$.error", nullValue())
status { isOk() }
content { contentType(MediaType.APPLICATION_JSON) }
}
}
...
}
The output in console has the "Init db" printed between creation and roll back of transaction.
It works correctly only if I move #ActiveProfiles from #Nested class to the outer class. Seems like #ActiveProfiles causes context reload but I don't know why this causes problems with transactions.