使用Mockito初始化对象

Question

我在使用Mockito进行单元测试初始化对象时遇到了一些困难

这是我的测试代码

@RunWith(SpringJUnit4ClassRunner.class)
class AreaControllerTest {

  @Mock
  CalculateArea calculateArea;

  @InjectMocks
  AreaController areaController;

  MockMvc mockMvc;

  @Before
  public void init()
  {

    mockMvc = standaloneSetup(areaController).build();
  }
  @Test
  void calculateArea() throws Exception{

    Mockito
        .when(calculateArea.calculateArea(Type.RECTANGLE, 5.0d, 4.0d))
        .thenReturn(20d);
    mockMvc.perform(
        MockMvcRequestBuilders.get("/api/area?type=RECTANGLE&param1=5&param2=4")
    )
    .andExpect(status().isOk())
    .andExpect(content().string("20.0"));

  }
}

要测试的代码

@Component
public class CalculateArea {

    @Autowired
    SquareService squareService;

    @Autowired
    RectangleService rectangleService;

    @Autowired
    CircleService circleService;

    public Double calculateArea(Type type, Double... r )
    {
        switch (type)
        {
            case RECTANGLE:
              if (r.length >= 2) {
                return rectangleService.area(r[0], r[1]);
              } else {
                throw new RuntimeException("Missing required params");
              }
            case SQUARE:
              if (r.length >= 1) {
                return squareService.area(r[0]);
              } else {
                throw new RuntimeException("Missing required param");
              }

            case CIRCLE:
              if (r.length >= 1) {
                return circleService.area(r[0]);
              } else {
                throw new RuntimeException("Missing required param");
              }
            default:
                throw new RuntimeException("Operation not supported");
        }
    }
}

RecTangleService、CircleService和SquareService用注释org.springframework.stereotype.Service注释我尝试了很多选项，最终得出结论。我没有得到我错在哪里。我试着在网上搜索了很多地方，但找不到任何帮助。

Answer 1

我认为你需要换一个跑步者。考虑到您使用的是SpringJUnit4ClassRunner，看起来您使用的是JUnit4。您应该能够简单地替换

@RunWith(SpringJUnit4ClassRunner.class)

与

@RunWith(MockitoJUnitRunner.class)