在Play 2.5.x中找不到类play.api.cache.CacheApi的构造函数

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) 
    }

  }


}

我正在对类中接受缓存作为参数之一的特定方法(MyWebSocketActor)进行单元测试。

为此，我需要创建一个Cache实例。play.api.cache.CacheApi是一个无法实例化的特性。因此，我在这个单元类中使用@Inject传递(cache:CacheApi)。但是它提供了错误信息：无法使用Play 2.5.3和Scala2.11.x找到类play.api.cache.CacheApi .I am的构造函数。

Answer 1

您需要模拟CacheApi (或者以其他方式创建它)，而不是使用依赖注入。

播放文档有一个很好的例子来说明如何做到这一点：

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)
    }
  }

}