Testing reactivemongo with scalatest raise an exception - scala

Question

I am trying to test some functionality in the app. I have other tests (with scalatest for reactivemongo) and are working, but with this I am getting this exception
[info] - should Persist and find a token * FAILED *
[info] The future returned an exception of type: reactivemongo.api.commands.bson.DefaultBSONCommandError, with message: CommandError[code=26, errmsg=ns not found, doc: {
[info] ok: BSONDouble(0.0),
[info] errmsg: "ns not found",
[info] code: BSONInteger(26)
[info] }]. (DaosApplicationSpecOneAppPerTest.scala:74)
This is the code for the tests (both are throwing the same error)
class UserTokenDaoMongoSpec extends DaosApplicationSpecOneAppPerTest {
"UserTokenDao" should {
"Persist and find a token" in withUserTokenDao { userTokenDao =>
val future = for {
_ <- userTokenDao.save(token)
maybeToken <- userTokenDao.find(token.id)
} yield {
maybeToken.map(_ == token)
}
whenReady (future) { result =>
result.get must be (true)
}
}
"Remove a token" in withUserTokenDao { userTokenDao =>
val future = for {
_ <- userTokenDao.save(token)
_ <- userTokenDao.remove(token.id)
maybeToken <- userTokenDao.find(token.id)
} yield {
maybeToken
}
whenReady (future) { result =>
result must be (None)
}
}
}
}
and for brevity, this is the method that inherits
def withUserTokenDao[T](t: UserTokenDao => T):T = running(app) {
val userTokenDao = new UserTokenDaoMongo
whenReady (userTokenDao.tokens.drop()) { result =>
t(userTokenDao)
}
}
The UserTokenDao implementation
class UserTokenDaoMongo extends UserTokenDao {
lazy val reactiveMongoApi = current.injector.instanceOf[ReactiveMongoApi]
val tokens = reactiveMongoApi.db.collection[JSONCollection]("tokens")
def find(id:UUID):Future[Option[UserToken]] =
tokens.find(Json.obj("id" -> id)).one[UserToken]
def save(token:UserToken):Future[UserToken] = for {
_ <- tokens.insert(token)
} yield token
def remove(id:UUID):Future[Unit] = for {
_ <- tokens.remove(Json.obj("id" -> id))
} yield ()
}
and this is the model of UserToken
class UserTokenDaoMongo extends UserTokenDao {
lazy val reactiveMongoApi = current.injector.instanceOf[ReactiveMongoApi]
val tokens = reactiveMongoApi.db.collection[JSONCollection]("tokens")
def find(id:UUID):Future[Option[UserToken]] =
tokens.find(Json.obj("id" -> id)).one[UserToken]
def save(token:UserToken):Future[UserToken] = for {
_ <- tokens.insert(token)
} yield token
def remove(id:UUID):Future[Unit] = for {
_ <- tokens.remove(Json.obj("id" -> id))
} yield ()
}
I am not sure what could be causing the error
Thank you

Answer 1

It turned out that the problem was that the collection tokens did not exist. I got into the mongo console, then I created the collection and the tests started working.