如何在 Play Framework 测试中注入 ExecutionContext？

Question

我想为我的 Play Framework 应用程序创建测试，我继续得到 java.lang.RuntimeException: There is no started application。我有一个这样的异步控制器：

    class ComputerController @Inject()(computerService: ComputerService)(implicit executionContext: ExecutionContext){
      def add = Action.async {
        ComputerForm.form.bindFromRequest.fold(
          errorForm => Future.successful(Ok(errorForm.toString)),
          data => {
            val ip = data.ip
            val name = data.name
            val user = data.user
            val password = data.password
            val computer = Computer(ip,name,user,password)
            val futureTask = computerService.add(newComputer)
            futureTask.map(res => Redirect(routes.HomeController.home()))
          }
        )
      }
    }

用于注入的辅助特性：

    trait Inject {
      val injector = new GuiceApplicationBuilder()
        .in(new File("conf/application.conf").
        .in(Mode.Test)
        .injector
    }

测试是这样的：

    class ComputerControllerSpec extends PlaySpec with Inject with MockitoSugar with ScalaFutures {
      lazy val computerService = mock[ComputerService]
      when(computerService.add(any[Computer])) thenReturn Future.successful("Computer added")
      implicit lazy val executionContext = injector.instanceOf[ExecutionContext]
      val controller = new ComputerController(computerService)
      "Computer Controller" should {
        "add a new computer" in {
          val computer = ComputerFormData("127.0.0.1","Computer","user","password")
          val computerForm = ComputerForm.form.fill(computer)
          val result = controller.add.apply {
            FakeRequest()
              .withFormUrlEncodedBody(computerForm.data.toSeq: _*)
          }
          val bodyText = contentAsString(result)
          bodyText mustBe ""
        }
      }
    }

我也试过：

用 ExecutionContext.global 初始化 executionContext 隐式值，得到 java.lang.RuntimeException: There is no started application.
将with OneAppPerSuite加到ComputerControllerSpec得到：akka.actor.OneForOneStrategy - Cannot initialize ExecutionContext; AsyncExecutor already shut down
将 "add a new computer" in { 更改为 "add a new computer" in new WithApplication { 并得到：java.lang.RuntimeException: There is no started application

我真的不知道如何将隐式 ExecutionContext 注入到我的测试中。

Answer 1

我猜你不见了"new WithApplication()" 试试这个

class ComputerControllerSpec extends PlaySpec with Inject with MockitoSugar with ScalaFutures {
  lazy val computerService = mock[ComputerService]
  when(computerService.add(any[Computer])) thenReturn Future.successful("Computer added")
  implicit lazy val executionContext = injector.instanceOf[ExecutionContext]
  val controller = new ComputerController(computerService)
  "Computer Controller" should {
    "add a new computer" in new WithApplication() {
      val computer = ComputerFormData("127.0.0.1","Computer","user","password")
      val computerForm = ComputerForm.form.fill(computer)
      val result = controller.add.apply {
        FakeRequest()
          .withFormUrlEncodedBody(computerForm.data.toSeq: _*)
      }
      val bodyText = contentAsString(result)
      bodyText mustBe ""
    }
  }
}

Answer 2

这个测试开始工作的方式是：

用 MockitoSugar 和 BeforeAndAfterAll

PlaySpec

覆盖：

// Before all the tests, start the fake Play application
override def beforeAll() {
  application.startPlay()
}
// After the tests execution, shut down the fake application
override def afterAll() {
  application.stopPlay()
}

然后所有测试运行都没有抛出异常。

如何在 Play Framework 测试中注入 ExecutionContext？

How can ExecutionContext be injected on Play Framework tests?

scala

guice

scalatest

playframework

playframework-2.0