将班级成员带到外部班级或特质的便捷方式？答案

【问题标题】：convenient way to take out class members to external class or trait?将班级成员带到外部班级或特质的便捷方式？
【发布时间】：2017-08-26 09:27:54
【问题描述】：

在我的 TestSpec 类中，我有一堆属性并且它开始变得拥挤，例如：

implicit val formats: Formats = DefaultFormats

  val client: WSClient = app.injector.instanceOf[WSClient]
  val env: Environment = app.injector.instanceOf[Environment]
  val config: Configuration = app.configuration
  val j4s: Json4s = app.injector.instanceOf[Json4s]
  val actSys: ActorSystem = app.injector.instanceOf[ActorSystem]
  implicit lazy val materializer: Materializer = app.materializer

  // mocking service
  val myService: ChironApiService = mock[MyService]

  val rawTextModel: String =
    """{"message":"a message","reason":"Done","list":[34,2,12]}"""
  val badResponseModel: ModelOne = JsonMethods.parse(rawTextModel).extract[BadResModel]

  val futureOfEither: Future[Either[String, Int]] = Future(Left("fr"))
.
.
.

所以我想把它变成一个特征并将这个特征添加到 TestSpec 然后我可以访问信息，有没有更优雅的 scala 方法来做这样的事情？

谢谢

【问题讨论】：

标签： java scala scalatest

【解决方案1】：

你可以试试

trait TestConfig {
    val client: WSClient = app.injector.instanceOf[WSClient]
    val env: Environment = app.injector.instanceOf[Environment]
    val config: Configuration = app.configuration
    val j4s: Json4s = app.injector.instanceOf[Json4s]
    val actSys: ActorSystem = app.injector.instanceOf[ActorSystem]
    implicit lazy val materializer: Materializer = app.materializer
 }

 class TestSpec extends TestConfig {
    // mocking service
    val myService: ChironApiService = mock[MyService]

    val rawTextModel: String =
        """{"message":"a message","reason":"Done","list":[34,2,12]}"""
    val badResponseModel: ModelOne = JsonMethods.parse(rawTextModel).extract[BadResModel]

    val futureOfEither: Future[Either[String, Int]] = Future(Left("fr"))
    .
    .
    .
 }

【讨论】：