scala – Spray.io：无法编译测试规范

trait PingService extends MyHttpService {

val pingRoutes =
    path("ping") {
      get {
        complete("message" -> "pong")
      }
    }
}

MyHttpService是一个扩展HttpService的自定义类,只包含实用方法.

这是测试规范：

import akka.actor.ActorRefFactory
import org.json4s.{DefaultFormats,Formats}
import org.scalatest.{FreeSpec,Matchers}
import spray.testkit.ScalatestRouteTest

class PingServiceSpec extends FreeSpec with PingService with ScalatestRouteTest with Matchers {

override implicit def actorRefFactory: ActorRefFactory = system

override implicit def json4sFormats: Formats = DefaultFormats

  "Ping service" - {
    "when calling GET /ping" - {
      "should return 'pong'" in {
        Get("/ping") ~> pingRoutes ~> check {
          status should equal(200)
          entity.asString should contain("pong")
        }
      }
    }
  }
}

每当我尝试运行测试,我会收到以下错误：

could not find implicit value for parameter ta: PingServiceSpec.this.TildeArrow[spray.routing.RequestContext,Unit]

 Get("/ping") ~> userRoutes ~> check {
              ^

我做傻事吗任何一种帮助将不胜感激！

编辑：虽然这可能看起来像是this question的笨蛋,但并不是这样.

该文章中提供的解决方案不起作用.