斯卡拉莫克。模拟接受参数的类

Question

class XScanner[T <: SocketClient](
  confPath: String = "/etc/default/configPath",
  socketClientFactory: String => T
) extends ScannerBase(path)

我的测试代码如下所示：

val t = new XScanner[SocketClient](confPath, (s: String) => mock[SocketClient])

显然，这是无法编译的，因为SocketClient需要一个到套接字的路径作为参数，但我不能调用mock[SocketClient]，因为它不是类型，也不能调用mock[SocketClient]，因为mock不将传递给它的类型的参数作为自己的参数。

那么，如何编写一个模拟socketclient工厂来传递给我的扫描仪呢？我甚至不知道如何模拟一个需要争论的类！

Answer 1

洞察力是您需要模拟的是socketclientfactory。然后将其设置为返回模拟socketclient。

给定：

trait SocketClient {
  def frobnicate(): Unit
}

class ScannerBase(path: String)

class XScanner[T <: SocketClient](
  confPath: String = "/etc/default/configPath",
  socketClientFactory: String => T
) extends ScannerBase(confPath) {
  val socket = socketClientFactory("Some Socket Name")
  socket.frobnicate
}

（附带说明-永远不能使用confpath的默认值，因为SocketClientFactory没有默认值）。

import org.scalatest.FunSuite
import org.scalamock.scalatest.MockFactory
import org.scalamock.generated.GeneratedMockFactory

class ScannerTest extends FunSuite with MockFactory with GeneratedMockFactory {

  test("scanner") {
    val mockFactory = mockFunction[String, SocketClient]
    val mockClient = mock[SocketClient]
    mockFactory.expects("Some Socket Name").returning(mockClient)
    mockClient.expects.frobnicate
    val scanner = new XScanner("path/to/config", mockFactory)
  }
}

import org.scalatest.FunSuite
import org.scalamock.scalatest.MockFactory

class ScannerTest extends FunSuite with MockFactory {

  test("scanner") {
    val mockFactory = mockFunction[String, SocketClient]
    val mockClient = mock[SocketClient]
    mockFactory.expects("Some Socket Name").returning(mockClient)
    (mockClient.frobnicate _).expects()
    val scanner = new XScanner("path/to/config", mockFactory)
  }
}