难以模拟HttpResponse的ScalaMock

Question

我正在尝试运行以下测试：

import AV_Enums.TimeSeriesFunctions
import org.scalamock.scalatest.MockFactory
import org.scalatest.funsuite.AnyFunSuite
import org.scalatest.matchers.must.Matchers.{be, _}
import scalaj.http.HttpResponse

import scala.io.Source

class ResponseParserTest extends AnyFunSuite with MockFactory {


  test("Parsing from a valid response returns a Right") {
    val mockResponse = Source.fromResource("MockResponse.json").mkString

    val mockResponse = mock[HttpResponse[String]]
    (mockResponse.body _).expects().returning(mockResponse)

    ResponseParser.convertTimeSeries(TimeSeriesFunctions.TIME_SERIES_INTRADAY, mockResponse) must be('right)
  }
}

然而，我得到了下面的构建错误，我不能理解原因是什么：

type mismatch;
 found   : T
 required: String
    val mockResponse = mock[HttpResponse[String]]
 _ must follow method; cannot follow mockResponse.body.type
    (mockResponse.body _).expects().returning(mockResponse)

我确信我在ScalaMock的用法上遗漏了一些东西，但我找不到它是什么。

Answer 1

这是ScalaMock中的一个已知错误。尝试下面的变通方法，看看这是否能让你继续下去-它在模拟子类之前锁定了类型参数。

test("Parsing from a valid response returns a Right") {
  val mockResponse = Source.fromResource("MockResponse.json").mkString
  class StringHttpResponse extends HttpResponse[String]("", 0, Map.empty())
  val mockResponse = mock[StringHttpResponse]
  (mockResponse.body _).expects().returning(mockResponse)

  ResponseParser.convertTimeSeries(TimeSeriesFunctions.TIME_SERIES_INTRADAY, mockResponse) must be('right)
}