您需要重写函数，以便使用“client”示例而不是直接使用URL进行调用。“也许是这样的：

trait InternalApiClient { 
   def getStuff(endpoint: String, request: Request): Response
}
object InternalApiClient extends InternalApiClient {
   def getStuff(endpoint: String, request: Request) = {
     val con = new URL(endpoint)
       .openConnection
       .asInstanceOf[httpURLConnection]
     send(con, request)
     receive(con)
   }
}

class MyClass(client: InternalApiClient = InternalApiClient) {
   def internalApiCall(payload: String) = {
    val request = buildRequestForApi(payload)
    val response =  client
       .getStuff("service.namespace.svc.cluster.local:8080/path", request)
    doStuffWithResponse(response)
  }
}

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然后，您可以撰写公寓测试，如下所示：

val client = mock[InternalApiClient]
val testMe = new MyClass(client)
when(client.getStuff(any, any)).thenReturn(someResponse)

testMe.internalApiCall("some payload")

verify(client)
  .getStuff("service.namespace.svc.cluster.local:8080/path", expectedRequest)

型