Question

package test

import javax.inject._
import org.specs2.mutable._
import play.api.test.Helpers._
import play.api.test._
import play.api.libs.json._
import play.api.cache._
import akka.stream._
import akka.actor._
import akka.actor.Actor
import akka.actor.ActorSystem
import akka.actor.ActorRef
import akka.actor.Props
import akka.pattern.ask
import models.MyWebSocketActor
import scala.collection.mutable.Map 
import org.specs2.mock._
import play.api.mvc._

class ValidateMethodTest @Inject() (cache: CacheApi) extends Specification with Mockito {





  val system = ActorSystem("MockActorSystem")
  val mockMap : Map[ActorRef , String] = Map()


  "validator method" should {

      "check username key" in {

        /*with no username key */
  val testMsg1 =  Json.parse("""{"message":"Testing Message" ,"conn_status" : 2 , "pub_key":"empty", "target":"all"}""")

 val actor1 = system.actorOf(Props[MyWebSocketActor],"actor1")



  val actor2 = system.actorOf(Props[MyWebSocketActor],"actor2")




  val mockObject1 = new MyWebSocketActor(actor1,actor2,cache,mockMap)

  val ( mockReturnMsg, mockReturnCode, mockPub_key) = mockObject1.validate(testMsg1)


     mockReturnCode must equalTo(500) 
    }

  }


}

我正在为类（MyWebSocketActor）中的特定方法（validate）进行单元测试，该方法接受缓存作为其参数之一。

因此，我需要创建一个Cache实例。 play.api.cache.CacheApi是一个特性，因此无法实例化。所以我使用@Inject在这个单元类中传递（cache：CacheApi）。但它提供了错误消息：找不到类play.api.cache.CacheApi 的构造函数。我正在使用Play 2.5.3和scala 2.11.x。

Answer 1

您需要模拟CacheApi（或以其他方式创建它）而不是使用依赖注入。

Play Documentation就如何做到这一点有一个很好的例子：

import org.specs2.mock._
import org.specs2.mutable._

import java.util._

class ExampleMockitoSpec extends Specification with Mockito {

  "MyService#isDailyData" should {
    "return true if the data is from today" in {
      val mockDataService = mock[DataService]
      mockDataService.findData returns Data(retrievalDate = new java.util.Date())

      val myService = new MyService() {
        override def dataService = mockDataService
      }

      val actual = myService.isDailyData
      actual must equalTo(true)
    }
  }

}

无法在Play 2.5.x中找到类play.api.cache.CacheApi的构造函数

1 个答案: