How do I supply an implicit value for an akka.stream.Materializer when sending a FakeRequest?

Question

I\'m trying to make sense of the error(s) I\'m seeing below, and to learn how to fix it.

could not find implicit value for parameter materializer: akka.Stream.M         


        

Answer 1

You don't need Materializer.

I believe you are calling not the right action.apply method.
You want def apply(request: Request[A]): Future[Result]
To call the right, you need FakeRequest[AnyContent], same parametrized type as action:Action[AnyContent].This type is forced by PlayBodyParser I believe you set for your action.

After that you don't need .run call

Answer 2

You can create an implicit ActorMaterializer within your test class which will use testkit's ActorSystem:

import akka.testkit.TestKit
import akka.actor.ActorSystem

class TestJmlPlay(_system : ActorSystem) extends TestKit(_system) ... {

  implicit val materializer: ActorMaterializer = ActorMaterializer()

  val bbox = ...