我如何模拟方法，从另一个方法调用一个方法？

Question

我是模拟新手。我要调用的服务是名称A，我需要测试someMethod。

@Service
public class A {



private Logger logger = LoggerFactory.getLogger(getClass());

    private final CoreXReader coreXReader;

    @Autowired
    B b;

    @Autowired
    C c;


    @Async
    public void someMethod(Config config) throws Exception {
        pushConfig(config);
    }

    private void pushConfig(Config config) throws Exception {

        String url = config.getBaseurl() + config.getId(); 
        ABCRestClient restClient = new ABCRestClient(url);

            String jobJson = restClient.callRestMethod(HttpMethod.GET, "");

    } 

} 

ABCRestClient的样本

  public class ABCRestClient {
        private Logger logger = LoggerFactory.getLogger(getClass());


        private String url;

        public ABCRestClient(String url) {
            this.url = url;
        }


        public String callRestMethod(HttpMethod method, String payload) throws Exception {
            someresponse="example response";
            return someresponse;
        }
    }

[我正在尝试通过创建mockSpy进行测试，但仍在调用它的'callRestMethod'

@RunWith(SpringRunner.class)
@SpringBootTest // (webEnvironment= SpringBootTest.WebEnvironment.RANDOM_PORT)
public class Test {

    @Autowired
    private A a;



    private Logger logger = LoggerFactory.getLogger(getClass());

    @Before
    public void prepareMockDataForService() throws Exception {

        ABCRestClient apiClient = new ABCRestClient(config.getBaseurl() + config.getId() );
        ABCRestClient apiClientSpy=Mockito.spy(apiClient);

        doReturn(getCallResponse()).when(apiClientSpy).callRestMethod(HttpMethod.GET, "");


    }

    @Test
    public void TestPushConfig() throws Exception {
        a.someMethod(StubDataGenerator.getConfig());

    }

    private String getCallResponse() {
        return "{"msg":"sample response"}";
    }

}

我不确定我在做什么错，为什么在我已经创建了间谍的情况下调用实际的callRestMethod。

我也尝试过使用此Mockito.doReturn(getCallResponse()).when(apiClientSpy.callRestMethod(HttpMethod.GET, ""))

此外，如果我使用Mockito.doReturn()或直接使用doReturn()，这两个语句有什么区别？就我而言，两者似乎表现相同。

[我也尝试使用when().thenReturn();之前，但当您实际要拨打电话时，我读了一个使用when().thenReturn()的地方。如果我的理解错误，请更正。

Answer 1

您可以尝试模拟而不是间谍：

   @RunWith(SpringRunner.class)
   @SpringBootTest // (webEnvironment= 
   SpringBootTest.WebEnvironment.RANDOM_PORT)
   public class Test {

    @Autowired
    private A a;



    private Logger logger = LoggerFactory.getLogger(getClass());

    @Before
    public void prepareMockDataForService() throws Exception {

        ABCRestClient apiClientSpy=Mockito.mock(ABCRestClient.class);

        doReturn(getCallResponse()).when(apiClientSpy).callRestMethod(HttpMethod.GET, "");


    }

    @Test
    public void TestPushConfig() throws Exception {
        a.someMethod(StubDataGenerator.getConfig());

    }

    private String getCallResponse() {
        return "{"msg":"sample response"}";
    }
  }