ScalaTest PlayFramework

Question

在學習游戲框架時嘗試做一些TDD：

class ContentFetching extends PlaySpec with BeforeAndAfter with MockFactory
{
  private val service = ContentService

  private val languages = List(Language(Some(1), "en", "English", "Placeholder"),
                               Language(Some(2), "de", "Deutsch", "Platzhalter")
                              )

  "find" must
  {
    "fail if languageCode is invalid" in
    {
      val fakeRepository = mock[LanguageRepositoryTrait]
      (fakeRepository.get _).expects().returning(languages)

      fakeRepository.get must have length 3

      service.find("fr") must be Result.NotFound

    }
  }
}

ContentService將調用：

def fourOhFour() = NotFound(s"Oops, content could not be found")

但斷言service.find("fr") must be Result.NotFound不會編譯。 為什么會這樣，然后如何測試呢？ 這是整個contentService（根據要求）可悲的是，它目前正在擴展Controller，因為我發現沒有其他方法可以返回Action。 實際上，我使用MVC，但也使用Service +存儲庫層：

class ContentServiceComponent(languageRepository: LanguageRepositoryTrait, nodeRepository: NodeRepositoryTrait) extends Controller
{
  def find(language: String) = Action
  {
    languageRepository.get().map(l => l.code).contains(language) match
    {
      case true => Ok(s"Homepage for $language")
      case false => fourOhFour()
    }
  }

  def fourOhFour() = NotFound(s"Oops, content could not be found")
}

object ContentService extends ContentServiceComponent(LanguageRepository, NodeRepository)

Answer 1

find代替返回Action可以返回Option

def find(language: String): Option[String] =
  {
    languageRepository.get().map(l => l.code).contains(language) match
    {
      case true => Some(s"Homepage for $language")
      case _ => None
    }
  }

因此，您可以按照以下說明在Controller處處理該問題：

def index(language:String) = Action{

ContentService.find(language) match{
  case Some(content) => Ok(content)
  case _ => NotFound(s"Oops, content could not be found")
}

}

你可以做這樣的測試用例：

class ContentFetching extends PlaySpec with BeforeAndAfter with MockFactory
{


  val languages = List(Language(Some(1), "en", "English",Placeholder"),Language(Some(2), "de", "Deutsch", "Platzhalter")
                              )

val languagesRepositoryMockHere = new LanguageRepositoryTrait{ 
    override def get =  languages  //I don't  know the implementations
}

  "find" must
  {
    "fail if languageCode is invalid" in
    {
       private val service = new ContentServiceComponent(languagesRepositoryMockHere,nodeRepositoryMockHere)


      service.find("fr") shouldBe None

    }
  }
}

這未經測試，但可以幫助參考。

干杯。

Answer 2

播放控制器中的service.find（“ fr”）返回結果

也許您正在將Result與Result.Status類型進行比較？

您可以使用play.api.helper嗎？

status(of: Future[Result]) = Await.result(of, timeout.duration).header.status

代替

service.find("fr") must be Result.NotFound

嘗試這樣的事情？

status(service.find("fr")) must be NOT_FOUND

NOT_FOUND是play.api.http.Status值，僅映射到標准HTTP狀態代碼404