Question

我有一个服务类说'HostService'

 @Service
 class HostService {
       @Autowired
       private val platformService: PlatformService = null

       def views: Option[HostView] = {
             val ip = "10.x.x.x"
             if (!this.isReachable(ip))
                throw new IPNotFoundException
             else{
                var versionInfo: Option[String] = null
                versionInfo = platformService.contextPathOf("version") match  {
                   case versionInfo if (versionInfo == Some(null)) => Option("")
                   case versionInfo => versionInfo
                }
             }
       }

       def isReachable(ip:String) :Boolean = {
           // makes a URl connection and checks if IP is reachable
       }

现在我想使用Mockito编写单元测试用例'HostServiceTest'。我将创建一个主机服务和模拟平台服务的实例，并将此主机服务实例用于模拟isReachable方法。

    class HostServiceTest extends FlatSpec with Mockables with OptionValues with BeforeAndAfter {
         var platformService: PlatformService = _
         before {
             platformService = mock[PlatformService]                

when(platformService.contextPathOf((anyString()))).thenReturn(Option("1.0.0-SNAPSHOT"))
          }

        it should "return response with out error " in {
           val hostService: HostService = new HostService
           mockField(hostService, "platformService", platformService)
           val hostServiceSpy = spy(hostService)
           doReturn(true).when(hostServiceSpy ).isReachable(anyString())
           val data = hostService.views
           // Some validation Checks
        }

在测试用例中，不是调用isReachable的模拟方法，而是进入实际方法。

我看到了这个问题Mockito: Trying to spy on method is calling the original method 我确实按照他们建议的方式进行了抄袭，但它却称之为实际的stub。

这可能有什么问题？

Answer 1

在模拟该字段时，请确保它是＆＃39; var＆＃39;如果是val，则模拟器不能将该字段设置为新值。

您的HostService将platformService声明为val（表示final）

class HostService {
   @Autowired
   private val platformService: PlatformService = null

一旦创建了hostService，它就会有一个最终的字段platformService。

val hostService: HostService = new HostService

当您尝试模拟platformService字段时，它将模拟API将尝试重置platformService，但它不是最终的。

mockField(hostService, "platformService", platformService)

修复：尝试将platformService更改为var

private var platformService: PlatformService = null

间谍方法调用实际方法而不是模拟方法

1 个答案: