[2.4.x] Is it possible to set a custom Play ApplicationLoader in scalatest specs?

[Loic]

Hi,

I'm using an injected router (at compile time) and custom ApplicationLoader : 

class FakeApplicationLoader extends ApplicationLoader {
  def load(context: Context) = {
    new FakeApplicationComponents(context).application // <- contains mocks
  }
}

With Specs2 I can use this FakeApplicationLoader as follows : 

"check that every workse" in new WithDepsApplication{
      val home = route(FakeRequest(GET, "/").get
      status(home) must equalTo(OK)
      contentType(submit) must beSome.which(_ == "text/html")
      contentAsString(submit) must contain ("Hello")
}

WithDepsApplication is defined like this :

import play.api.test.WithApplicationLoader
class WithDepsApplication extends WithApplicationLoader(new FakeApplicationLoader)

Is it possible to do the same thing with scalatest?

The documentation says that I can define a FakeApplication object like :

implicit override lazy val app: FakeApplication = FakeApplication()

But it seems that I can't pass an ApplicationLoader parameter to FakeApplication.

Please note that I can still use "in new WithDepsApplication" with scalatest but it requires to add play-specs2 to build.sbt, which does not seem very clean.

Thanks,

Loïc

[Marius Soutier]

In ScalaTest+Play 1.4.0-M4 you can mix in OneAppPerSuite and override `app`, or alternatively OneAppPerTest and override `newAppForTest`, to instantiate the app from your FakeLoader.

--
You received this message because you are subscribed to the Google Groups "play-framework" group.
To unsubscribe from this group and stop receiving emails from it, send an email to play-framewor...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/play-framework/cbec40d8-5dff-46a3-bb9e-fac61d42772a%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Yann Simon]

Hi Marius!

Do you mean something like: https://github.com/yanns/TPA/blob/master/frontend/TBA_macwire/test/integrationtests/PlayerDetailIT.scala#L21

To view this discussion on the web visit https://groups.google.com/d/msgid/play-framework/B60DE485-FA32-47B0-A9D1-BBD9C72367BC%40gmail.com.

[Marius Soutier]

Yeah, that's just like Loïc's example, no?

To view this discussion on the web visit https://groups.google.com/d/msgid/play-framework/CAFfBxfH1r2SOuPM8y9%2Bg-F0UHuW_3WDvdg2GNJr5R0L8WD1F%2BA%40mail.gmail.com.

[Loic]

Hi, thanks to both of you for your answers!

I've tried something similar to Yann example : 

object WithDepsApplication {


  def app = {
    val appLoader = new FakeApplicationLoader
    val context = ApplicationLoader.createContext(
      new Environment(new File("."), ApplicationLoader.getClass.getClassLoader, Mode.Test)
    )


    appLoader.load(context)
  }
}

Then in my test :

implicit val application = WithDepsApplication.app

But as my app is reading some configuration keys, I have this kind of error : 

*** FAILED ***

[info]   java.lang.RuntimeException: There is no started application

I guess because my app is not a FakeApplication.

It's working WithApplicationLoader from play-specs2 helper but I'm not sure to understand why...

(see https://github.com/playframework/playframework/blob/2.4.0-RC2/framework/src/play-specs2/src/main/scala/play/api/test/Specs.scala#L24)

Thanks

Loïc

[Loic]

By the way, as my app is not a FakeApplication, would it be possible to use it for tests needing an inMemoryDatabase parameter ?

Thanks

[Marius Soutier]

This works for me:

class ApplicationTest extends PlaySpec with OneAppPerSuite {
  override implicit lazy val app: api.Application = {
    val appLoader = new FakeAppLoader

    val context = ApplicationLoader.createContext(
      new Environment(new File("."), ApplicationLoader.getClass.getClassLoader, Mode.Test)
    )
    appLoader.load(context)
  }

  "check that everything works" in {
    val play = route(FakeRequest(GET, "/play")).get
    status(play) mustEqual OK
    contentType(play) mustEqual Some("text/html")
    contentAsString(play) must include("Play Framework")
  }

}

PS Will blog about it soon…

To view this discussion on the web visit https://groups.google.com/d/msgid/play-framework/eeae4f51-d86c-4403-97a7-538efc6a8b59%40googlegroups.com.

[Loic]

Indeed with  OneAppPerSuite it's working, thanks :)

 

PS Will blog about it soon…

Great  news, if you have an example working with an inMemoryDatabase parameter in the application it would be awesome.

Currently I have this exception : "java.lang.NoSuchMethodException: play.api.db.DBApi.<init>()"

Loïc