scala - 带有 Java 接口的 Scalamock 3

Question

我无法让 Scalamock 3 模拟 Java 接口。我正在尝试在 AWS 上运行 describeInstances。该调用需要一个 EC2 客户端，我使用教程中描述的方法对其进行了模拟。我得到错误：

Error:(20, 42) type mismatch;
 found   : com.amazonaws.services.ec2.model.DescribeInstancesRequest
 required: org.scalamock.function.FunctionAdapter0[Boolean]
    (client.describeInstances _).expects(request).returning(result.withNextToken("1").withReservations(res1))
                                     ^

我需要为 Java 接口做一些特别的事情吗？

package example

import com.amazonaws.services.ec2.AmazonEC2
import com.amazonaws.services.ec2.model.{ Instance, Reservation, DescribeInstancesRequest, DescribeInstancesResult }
import org.scalatest._
import org.scalamock.scalatest.MockFactory

class ApiSpec extends FunSpec with MockFactory {

  describe("getInstances") {
    val client = mock[AmazonEC2]
    val request = new DescribeInstancesRequest
    val result = new DescribeInstancesResult
    val instance1 = (new Instance).withInstanceId("i-000")
    val instance2 = (new Instance).withInstanceId("i-000")
    val res1 = (new Reservation).withInstances(instance1)
    val res2 = (new Reservation).withInstances(instance2)
    (client.describeInstances _).expects(request).returning(result.withNextToken("1").withReservations(res1))
    (client.describeInstances _).expects(request.withNextToken("1")).returning(result.withReservations(res2))
  }

}