Mockito匹配器，scala值类和NullPointerException [英] Mockito matchers, scala value class and NullPointerException

问题描述

我正在使用带有scalatest的Mockito.将匹配器与值类一起使用时，我遇到以下问题.

I'm using mockito with scalatest. I have following problem when using matcher with value class.

import org.scalatest.FlatSpec
import org.scalatest.mock.MockitoSugar
import org.mockito.BDDMockito._
import org.mockito.Matchers.any

case class FirstId(val value: String) extends AnyVal
case class SecondId(val value: String) extends AnyVal

trait MockedClass {
  def someMethods(firstId: FirstId, secondId: SecondId): Int
}

class ValueClassSpec() extends FlatSpec with MockitoSugar {

  val mockedClass = mock[MockedClass]
  val secondId = SecondId("secondId")

  "Matchers" should "work for value class" in {
    // given
    given(mockedClass.someMethods(any[FirstId], org.mockito.Matchers.eq(secondId))).willReturn(3)
    // when
    val result = mockedClass.someMethods(FirstId("firstId"), secondId)
    // then
    assert(result == 3)
  }

}

结果是:

ValueClassSpec:
Matchers
- should work for value class *** FAILED ***
  java.lang.NullPointerException:
  at io.scalac.fow.party.ValueClassSpec$$anonfun$1.apply$mcV$sp(ValueClassSpec.scala:22)
  at io.scalac.fow.party.ValueClassSpec$$anonfun$1.apply(ValueClassSpec.scala:20)
  at io.scalac.fow.party.ValueClassSpec$$anonfun$1.apply(ValueClassSpec.scala:20)
  at org.scalatest.Transformer$$anonfun$apply$1.apply(Transformer.scala:22)
  at org.scalatest.Transformer$$anonfun$apply$1.apply(Transformer.scala:22)
  at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85)
  at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
  at org.scalatest.Transformer.apply(Transformer.scala:22)
  at org.scalatest.Transformer.apply(Transformer.scala:20)
  at org.scalatest.FlatSpecLike$$anon$1.apply(FlatSpecLike.scala:1639)
  ...

我发现了类似的问题( Scala值类和Mockito匹配器不要一起玩)，但没有任何建议.

I found similar question (Scala Value classes and Mockito Matchers don't play together) but without any advice.

是否可以使用具有scala值类的模拟匹配器?

Is there any posibility to use mockito matchers with scala value class?

库版本:scala 2.11.2，mockito 1.10.8，scalatest 2.1.6

Lib versions: scala 2.11.2, mockito 1.10.8, scalatest 2.1.6

推荐答案

正确的解决方案是:

case class StringValue(val text: String) extends AnyVal
case class LongValue(val value: Long) extends AnyVal

val eqFirst: StringValue = StringValue(org.mockito.Matchers.eq("first"))
val anySecond: StringValue = StringValue(org.mockito.Matchers.any[String])

val eqFirst: LongValue = LongValue(org.mockito.Matchers.eq(1L))
val anySecond: LongValue = LongValue(org.mockito.Matchers.any[Long])

这篇关于Mockito匹配器，scala值类和NullPointerException的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！