关于junit5:Spring-MVC-Rest-Controller-Tests

Using JsonPath in MockMVC Test

BeerController

@RequestMapping("/api/v1/beer")@RestControllerpublic class BeerController {    private final BeerService beerService;    @GetMapping(path = {"/{beerId}"},produces = { "application/json" })    public ResponseEntity<BeerDto>  getBeerById(@PathVariable("beerId") UUID beerId){        return new ResponseEntity<>(beerService.findBeerById(beerId), HttpStatus.OK);    }}

BeerControllerTest

import static org.hamcrest.core.Is.is;import static org.mockito.ArgumentMatchers.any;import static org.mockito.BDDMockito.given;import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;@ExtendWith(MockitoExtension.class)class BeerControllerTest {    @Mock    BeerService beerService;    @InjectMocks    BeerController beerController;    MockMvc mockMvc;    BeerDto validBeer;    @BeforeEach    void setUp() {        validBeer = BeerDto.builder().id(UUID.randomUUID())                .version(1)                .beerName("Beer1")                .beerStyle(BeerStyleEnum.PALE_ALE)                .price(new BigDecimal("12.99"))                .quantityOnHand(4)                .upc(123456789012L)                .createdDate(OffsetDateTime.now())                .lastModifiedDate(OffsetDateTime.now())                .build();        mockMvc = MockMvcBuilders.standaloneSetup(beerController).build();    }    @Test    void testGetBeerById() throws Exception {        given(beerService.findBeerById(any())).willReturn(validBeer);        mockMvc.perform(get("/api/v1/beer/" + validBeer.getId()))                .andExpect(status().isOk())                .andExpect(content().contentType(MediaType.APPLICATION_JSON_UTF8))                .andExpect(jsonPath("$.id", is(validBeer.getId().toString())))                .andExpect(jsonPath("$.beerName", is("Beer1")));    }}