http-status-code-404 - 为什么我的 MockMvc 测试找不到我的自定义运行状况指示器但返回 404？

Question

在查看了 stackoverflow 等之后，我尝试了很多，但我找不到解决方案，因为我的测试无法找到我的自定义运行状况指标。

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@AutoConfigureWebTestClient
@AutoConfigureMockMvc
@TestPropertySource(properties = { "management.server.port=0" })
class MyCassandraHealthIndicatorTest {
    @Autowired
    private WebTestClient webClient;

    @LocalServerPort
    // private String port = "10000";
    private String port;

    @Autowired
    private WebApplicationContext context;

    @MockBean
    private MyCassandraHealthIndicator healthIndicator;

    @MockBean
    private Health.Builder builder;

    @Autowired
    protected MockMvc mockMvc;
    
    @Before
    public void setupMockMvc() {
        mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
    }
    @Test
    void checkCassandraHealthUp() {
        webClient.get().uri("/actuator/health/mycassandra")
                .exchange()
                .expectStatus().isOk()
                .expectBody()
                .jsonPath("status")
                .isEqualTo("UP");
    }
}

当前结果：

java.lang.AssertionError: Status expected:<200 OK> but was:<404 NOT_FOUND>

> GET http://localhost:65188/actuator/health/mycassandra
> WebTestClient-Request-Id: [1]

No content

< 404 NOT_FOUND Not Found
< Vary: [Origin, Access-Control-Request-Method, Access-Control-Request-Headers]
< Content-Type: [application/json]
< Transfer-Encoding: [chunked]
< Date: [Fri, 01 Oct 2021 11:49:23 GMT]

{"timestamp":"2021-10-01T11:49:23.387+00:00","status":404,"error":"Not Found","message":"","path":"/actuator/health/mycassandra"}

在浏览器中调用 URL 可以完美运行。