CODEWITHSUNDEEP
scalaplayframework
Yann Moisan
Yann Moisan

Reputation: 8281

How to pass a service to a controller with Playframework 2.4

How to pass a service to a controller with Playframework 2.4

I've tried to pass the service in the constructor (simple solution)

class Application(val service: Service) extends Controller {…}

But how to write a functional test with specs2, and more precisely how can I instantiate a controller with a fake service :

"…" in new WithApplication {…}

Here is the error

[error]    1) Could not find a suitable constructor in controllers.Application. Classes must have either one (and only one) constructor annotated with @Inject or a zero-argument constructor that is not private.

Upvotes: 0

Views: 149

Answers (2)

Xosted
Xosted

Reputation: 331

I'm learning, like you, this aspect of the Framework. I understood that you can create of Mock of your service, using Mockito (default mocking library in the framework) and instantiate your controller with it. Something like that:

import org.specs2.mock._
class ApplicationTestSpec extends Specification with Mockito {

    lazy val mockService = mock[Service]
    // Details of the mock object need to be added.

    "..." in new WithApplication {
        val mockedController = new controllers.Application(mockRepo)
        ...
    }
}

The documentation of Mockito should tell you how to precisely mock your service. I hope it helps.

Edit: indeed, this would work for unit test, not functional one. My bad.

Upvotes: 0

Remi Thieblin
Remi Thieblin

Reputation: 186

I would inject the service in the controller:

import javax.inject._

class Application @Inject (val service: Service) extends Controller {…}

Then bind the service to different implementations based on different configs for dev and tests.

Upvotes: 1

Related Questions