如何使用springboot为rest控制器、服务和dao层编写junit测试用例？

Question

如何为RestController，Service和DAO层编写JUnit测试用例？

我试过MockMvc

@RunWith(SpringRunner.class)
public class EmployeeControllerTest {

    private MockMvc mockMvc;

    private static List<Employee> employeeList;

    @InjectMocks
    EmployeeController employeeController;

    @Mock
    EmployeeRepository employeeRepository;

    @Test
    public void testGetAllEmployees() throws Exception {

        Mockito.when(employeeRepository.findAll()).thenReturn(employeeList);
        assertNotNull(employeeController.getAllEmployees());
        mockMvc.perform(MockMvcRequestBuilders.get("/api/v1/employees"))
                .andExpect(MockMvcResultMatchers.status().isOk());
    }

如何验证rest控制器和其他层中的CRUD方法？

Answer 1

您可以使用@RunWith（MockitoJUnitRunner.class）对服务层模拟DAO层组件进行单元测试。您不需要SpringRunner。为它设置类。

完整的源代码

    @RunWith(MockitoJUnitRunner.class)
    public class GatewayServiceImplTest {

        @Mock
        private GatewayRepository gatewayRepository;

        @InjectMocks
        private GatewayServiceImpl gatewayService;

        @Test
        public void create() {
            val gateway = GatewayFactory.create(10);
            when(gatewayRepository.save(gateway)).thenReturn(gateway);
            gatewayService.create(gateway);
        }
    }

您可以使用@DataJpaTest与DAO层进行集成测试

    @RunWith(SpringRunner.class)
    @DataJpaTest
    public class GatewayRepositoryIntegrationTest {

        @Autowired
        private TestEntityManager entityManager;

        @Autowired
        private GatewayRepository gatewayRepository;

        // write test cases here     
    }

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