OneServerPerSuite

Trait that provides a new Application and running TestServer instance per ScalaTest Suite.

By default, this trait creates a new FakeApplication for the Suite using default parameter values, which is made available via the app field defined in this trait and a new TestServer for the Suite using the port number provided by its port field and the Application provided by its app field. If your Suite needs a Application with non-default parameters, override app. If it needs a different port number, override port.

This SuiteMixin trait's overridden run method calls start on the TestServer before executing the Suite via a call to super.run. In addition, it places a reference to the Application provided by app into the ConfigMap under the key org.scalatestplus.play.app and to the port number provided by port under the key org.scalatestplus.play.port. This allows any nested Suites to access the Suite's Application and port number as well, most easily by having the nested Suites mix in the ConfiguredServer trait. On the status returned by super.run, this trait's overridden run method registers a call to stop on the TestServer to be executed when the Status completes, and returns the same Status. This ensure the TestServer will continue to execute until all nested suites have completed, after which the TestServer will be stopped.

Here's an example that demonstrates some of the services provided by this trait:

package org.scalatestplus.play.examples.oneserverpersuite

import play.api.test._
import org.scalatestplus.play._
import play.api.{Play, Application}
import play.api.inject.guice._

class ExampleSpec extends PlaySpec with OneServerPerSuite {

  // Override app if you need a Application with other than non-default parameters.
  implicit override lazy val app: Application =
    new GuiceApplicationBuilder().configure("ehcacheplugin" -> "disabled").build()

  "The OneServerPerSuite trait" must {
    "provide an Application" in {
      app.configuration.getString("ehcacheplugin") mustBe Some("disabled")
    }
    "make the Application available implicitly" in {
      def getConfig(key: String)(implicit app: Application) = app.configuration.getString(key)
      getConfig("ehcacheplugin") mustBe Some("disabled")
    }
    "start the Application" in {
      Play.maybeApplication mustBe Some(app)
    }
    "provide the port number" in {
      port mustBe Helpers.testServerPort
    }
    "provide an actual running server" in {
      import Helpers._
      import java.net._
      val url = new URL("http://localhost:" + port + "/boum")
      val con = url.openConnection().asInstanceOf[HttpURLConnection]
      try con.getResponseCode mustBe 404
      finally con.disconnect()
    }
  }
}

If you have many tests that can share the same Application and TestServer, and you don't want to put them all into one test class, you can place them into different Suite classes. These will be your nested suites. Create a master suite that extends OneServerPerSuite and declares the nested Suites. Annotate the nested suites with @DoNotDiscover and have them extend ConfiguredServer. Here's an example:

package org.scalatestplus.play.examples.oneserverpersuite

import play.api.test._
import org.scalatest._
import org.scalatestplus.play._
import play.api.{Play, Application}
import play.api.inject.guice._

// This is the "master" suite
class NestedExampleSpec extends Suites(
  new OneSpec,
  new TwoSpec,
  new RedSpec,
  new BlueSpec
) with OneServerPerSuite {
  // Override app if you need an Application with other than non-default parameters.
  implicit override lazy val app: Application =
    new GuiceApplicationBuilder().configure(Map("ehcacheplugin" -> "disabled")).build()
}

// These are the nested suites
@DoNotDiscover class OneSpec extends PlaySpec with ConfiguredServer
@DoNotDiscover class TwoSpec extends PlaySpec with ConfiguredServer
@DoNotDiscover class RedSpec extends PlaySpec with ConfiguredServer

@DoNotDiscover
class BlueSpec extends PlaySpec with ConfiguredServer {

  "The OneServerPerSuite trait" must {
    "provide an Application" in {
      app.configuration.getString("ehcacheplugin") mustBe Some("disabled")
    }
    "make the Application available implicitly" in {
      def getConfig(key: String)(implicit app: Application) = app.configuration.getString(key)
      getConfig("ehcacheplugin") mustBe Some("disabled")
    }
    "start the Application" in {
      Play.maybeApplication mustBe Some(app)
    }
    "provide the port number" in {
      port mustBe Helpers.testServerPort
    }
    "provide an actual running server" in {
      import Helpers._
      import java.net._
      val url = new URL("http://localhost:" + port + "/boum")
      val con = url.openConnection().asInstanceOf[HttpURLConnection]
      try con.getResponseCode mustBe 404
      finally con.disconnect()
    }
  }
}