Starting a Play application within zio-test context.

PlayRunnableSpec.scala

package zio.test

import play.api.test._
import play.api.test.Helpers._
import zio.{UIO, URIO}
import zio.clock.Clock
import zio.duration._
import zio.test.environment.TestEnvironment

/** A Play 2.3+ runnable spec that provides testable versions of all of the
  * modules in ZIO (Clock, Random, etc).
  */
trait PlayRunnableSpec extends DefaultRunnableSpec {

  val testConfigMap = Map("test" -> true)

  lazy val fakeApp = FakeApplication(additionalConfiguration = testConfigMap)

  /** Returns an effect that executes a given spec, producing the results of the
    * execution.
    */
  private[zio] override def runSpec(
      spec: ZSpec[Environment, Failure]
  ): URIO[TestLogger with Clock, ExecutedSpec[Failure]] =
    startPlay(fakeApp).bracket(_ => stopPlay) { _ =>
      runner.run(aspects.foldLeft(spec)(_ @@ _) @@ TestAspect.fibers)
    }

  def startPlay(app: play.api.Application) =
    UIO.effectTotal(play.api.Play.start(app))

  def stopPlay =
    UIO.effectTotal(play.api.Play.stop())
}