Java 마이크로서비스 아키텍처의 테스트 전략

@Test
public void testUserServiceFindById() {
    // 设置模拟对象
    UserRepository userRepository = Mockito.mock(UserRepository.class);
    UserService userService = new UserService(userRepository);

    // 模拟用户查找操作
    Mockito.when(userRepository.findById(1L)).thenReturn(Optional.of(new User(1L, "John Doe")));

    // 断言查找结果
    assertThat(userService.findById(1L).getId(), is(1L));
    assertThat(userService.findById(1L).getName(), is("John Doe"));
}

@WebMvcTest(UserController.class)
class UserControllerIntegrationTest {

    @Autowired
    private MockMvc mockMvc;

    @Autowired
    private UserRepository userRepository;

    @BeforeEach
    public void setup() {
        // 设置模拟用户数据
        userRepository.deleteAll();
        userRepository.save(new User(1L, "John Doe"));
    }

    @Test
    public void testFindById() throws Exception {
        mockMvc.perform(MockMvcRequestBuilders.get("/users/1"))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andExpect(MockMvcResultMatchers.content().json("{id:1,name:'John Doe'}"));
    }
}

@SpringJUnitConfig
class ContractTest {

    @Autowired
    private PactVerifier verifier;

    @TestTemplate
    @ExtendWith(SpringExtension.class)
    public void pactVerificationTest(MockServerServer wireMockServer, Pact providerState, Interaction interaction) throws IOException {
        verifier.verifyPact(providerState, interaction, wareMockServer.getUrl());
    }

    @Pact(provider="UserService", consumer="Client")
    public RequestResponsePact createPact(MockServer mockServer) {
        return Pact.define(
            (request) -> {
                request.method("GET")
                        .path("/")
                        .headers(singletonMap("Content-Type", "application/json"));
            },
            (response) -> {
                response.status(200)
                        .body("{\"id\":1,\"name\":\"John Doe\"}")
                        .headers(singletonMap("Content-Type", "application/json"));
            }
        );
    }
}