如何使用scalatest在playframework中测试文件上传？

Question

我正在为使用scala / playframework创建的应用程序编写测试。有一个带有文件上传的路由。这就是我到目前为止所写的内容。

      val dataFile: File = new File("../TestCSV/product.csv")
      val tempFile = TemporaryFile(dataFile)
      val part = FilePart[TemporaryFile](key = "dataFile", filename = "product.csv", contentType = Some("application/vnd.ms-excel"), ref = tempFile)
      val formData: MultipartFormData[TemporaryFile] = MultipartFormData[TemporaryFile](dataParts = Map(), files = Seq(part), badParts = Seq(), missingFileParts = Seq())
      val request: FakeRequest[MultipartFormData[TemporaryFile]] = FakeRequest[MultipartFormData[TemporaryFile]]("POST", "/api/core/v0.1/data-import/uploads/%s/product".format(sandboxId), headers, formData)
      val response = route(request).get
      status(response) mustBe OK

我收到此错误。

Cannot write an instance of play.api.mvc.MultipartFormData[play.api.libs.Files.TemporaryFile] to HTTP response. Try to define a Writeable[play.api.mvc.MultipartFormData[play.api.libs.Files.TemporaryFile]]

如何让这个类可写？我希望我的问题清楚。如果有一些混乱，那么请问。提前谢谢。