您有@WebMvcTest。
可用于仅关注Spring MVC组件的Spring MVC测试的注解。
您需要使用@SpringBootTest（classes = Application.class）并配置您的MockMvc。

@RunWith(SpringRunner.class)
@SpringBootTest(classes = DemoApplication.class)
public class JwtControllerTests {

    private MockMvc mockMvc;

    @MockBean
    private JwtUserDetailsService jwtUserDetailsService;

    @MockBean
    private AuthenticationManager authenticationManager;

    @Autowired
    private JwtTokenUtil jwtTokenUtil;

    @Before
    public void setup() {
        MockitoAnnotations.initMocks(this);
        this.mockMvc = MockMvcBuilders.standaloneSetup(new JwtAuthenticationController(authenticationManager,jwtUserDetailsService,jwtTokenUtil))
                .addInterceptors(interceptor)
                .setControllerAdvice(exceptionTranslator)
                .build();
    }

    @Test
    public void auth_Success() throws Exception {
        when(
                jwtUserDetailsService.loadUserByUsername(anyString())
        ).thenReturn(adminUserDetails);

        RequestBuilder request = MockMvcRequestBuilders
                .post("/api/v1/authenticate")
                .contentType(MediaType.APPLICATION_JSON)
                .content(authBody);

         mockMvc.perform(request).andExpect(status().isOk());
    }
}

将JwtAuthenticationController更改为接受构造函数的依赖项。

您可以@SpyBean

@SpyBean
private JwtTokenUtil jwtTokenUtil