Mockito匹配器,scala值类和NullPointerException

Question

我正在使用simito与scalatest.使用具有值类的匹配器时,我有以下问题.

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 Value类和Mockito Matchers不能一起玩)但没有任何建议.

是否有任何可能使用scala值类的mockito匹配器？

Lib版本:scala 2.11.2,mockito 1.10.8,scalatest 2.1.6

Answer 1

适当的解决方案是:

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])

Answer 2

我找到了解决方案

val anyFirstId: FirstId = any[String].asInstanceOf[FirstId]
val eqSecondId: SecondId = org.mockito.Matchers.eq[String](secondId.value).asInstanceOf[SecondId]
given(mockedClass.someMethods(anyFirstId, eqSecondId)).willReturn(3)

Answer 3

这适用于所有类型的extends AnyVal值类，也不需要特殊的匹配器：

    given(mockedClass.someMethods(FirstId(anyString), SecondId(org.mockito.Matchers.eq(secondId.value)))).willReturn(3)