用Mockito进行Scala试验

Question

我是斯卡拉的新人。目前，我正在进行一项模拟特性测试。有人能帮我实现吗？我想模拟特性seasonalityDao.doSomeForB和测试方法hMock.doSomeForF()中的方法SeasonalityServiceImpl和hMock.doSomeForF()。

更新:我已经根据下面的评论更正了代码。在本例中，当我试图对模拟的方法验证(SMock)、.doSomeForB()验证(SMock).doSomeForB1()进行验证时，我会收到下一个错误: seasonalityDao.doSomeForB()；->在主$anonfun$1中使用$mcV$sp(Main.scala:12)--实际上，与这个模拟没有任何交互。

下面是一个代码(我刚刚简化了项目的重要部分，举个例子)：

import org.scalatest._
import org.mockito.Mockito._

class Main extends FunSuite with SeasonalityServiceComponentImpl with SeasonalityDaoComponent {
  test("some test") {
    def hMock = mock(classOf[SeasonalityServiceImpl])
    def sMock = mock(classOf[SeasonalityDao])

    when(sMock.doSomeForB()).thenReturn(Option(2))
    when(sMock.doSomeForB1()).thenReturn(10)

    verify(sMock).doSomeForB()
    verify(sMock).doSomeForB1()

    println("With Option " + hMock.doSomeForF())
    println("Without Option " + hMock.doSomeForF1())
  }

  override def seasonalityDao: SeasonalityDao = mock(classOf[SeasonalityDao])

  override def seasonalityService: SeasonalityService = mock(classOf[SeasonalityService])
}

trait SeasonalityDaoComponent {
  def seasonalityDao: SeasonalityDao

  trait SeasonalityDao {
    def doSomeForB(): Option[Int]
    def doSomeForB1(): Int
  }
}

trait SeasonalityServiceComponent {
  def seasonalityService: SeasonalityService

  trait SeasonalityService {
    def doSomeForF(): Option[Int]
    def doSomeForF1(): Int
  }
}

trait SeasonalityServiceComponentImpl extends SeasonalityServiceComponent {
  this: SeasonalityDaoComponent =>

  trait SeasonalityServiceImpl extends SeasonalityService {
    def doSomeForF(): Option[Int] = {
      seasonalityDao.doSomeForB()
    }
    def doSomeForF1(): Int = {
      seasonalityDao.doSomeForB1()
    }
  }
}

Answer 1

如果我正确理解，您希望在模拟中调用doSomeForB和doSomeForB1。但是您的代码在调用它们之前验证了这个期望，所以测试失败了。

此外，模拟被定义为本地方法，这意味着每次调用时都会得到一个新的模拟对象。您需要将它们转换为本地值，这样就可以交互(并验证)相同的实例。

修改为如下所示：

  test("some test") {
   // this seems unused -->>  def hMock = mock(classOf[SeasonalityServiceImpl])
    val sMock = mock(classOf[SeasonalityDao]) // you need it to be a val, not a def

    when(sMock.doSomeForB()).thenReturn(Option(2))
    when(sMock.doSomeForB1()).thenReturn(10)

    println("With Option " + sMock.doSomeForF()) // note that you should call them on sMock
    println("Without Option " + sMock.doSomeForF1())

    verify(sMock).doSomeForB()
    verify(sMock).doSomeForB1()
  }