Mockito:预计有0个符合条件的记录,已记录1个

时间:2019-07-31 13:42:35

标签: scala playframework mockito scalatest mockito-scala

我拥有以下PlaySpec:

"Service A" must {

   "do the following" in {
       val mockServiceA = mock[ServiceA]
       val mockServiceB = mock[ServiceB]
       when(mockServiceA.applyRewrite(any[ClassA])).thenReturn(resultA) // case A
       when(mockServiceB.execute(any[ClassA])).thenReturn(Future{resultB})

       // test code continuation
   }
} 

ServiveAServiceB的定义是

class ServiceA {
    def applyRewrite(instance: ClassA):ClassA = ???
}

class ServiceB {
   def execute(instance: ClassA, limit: Option[Int] = Some(3)) = ???
}

模拟ServiceA#applyRewrite效果很好。 模拟ServiceB#execute失败,但出现以下异常:

Invalid use of argument matchers!
0 matchers expected, 1 recorded:
-> at RandomServiceSpec.$anonfun$new$12(RandomServiceSpec.scala:146)

This exception may occur if matchers are combined with raw values:
    //incorrect:
    someMethod(anyObject(), "raw String");
When using matchers, all arguments have to be provided by matchers.
For example:
    //correct:
    someMethod(anyObject(), eq("String by matcher"));

尽管异常中包含的说明对我来说有点违反直觉,但我尝试了以下操作:

when(mockServiceB.execute(anyObject[ClassA])).thenReturn(Future{resultB})
when(mockServiceB.execute(anyObject())).thenReturn(Future{resultB})
when(mockServiceB.execute(anyObject)).thenReturn(Future{resultB})
when(mockServiceB.execute(any)).thenReturn(Future{resultB})
when(mockServiceB.execute(any, Some(3))).thenReturn(Future{resultB})
when(mockServiceB.execute(any[ClassA], Some(3))).thenReturn(Future{resultB})

很遗憾,所有步骤均无济于事。唯一改变的是异常引用的预期和记录的匹配器的数量。

对我来说最奇怪的是,该模拟对于案例A 非常适用。

2 个答案:

答案 0 :(得分:3)

使用micito-scala的惯用语法,所有与默认参数相关的内容都将由框架处理

mockServiceB.execute(*) returns Future.sucessful(resultB)

如果添加cats集成,则可能会减少到

mockServiceB.execute(*) returnsF resultB

更多信息here

答案 1 :(得分:1)

您需要执行以下操作:

导入org.mockito.ArgumentMatchersSugar ._

when(mockServiceB.execute(any[ClassA], eqTo(Some(3)))).thenReturn(Future{resultB})

当您使用any且函数接收多个参数时,您需要使用eq(something)传递不存在的其他参数,希望对您有所帮助。

编辑:我很遗憾忘记了导入,它是eqTo而不是eq