Unit testing of Spring Boot Actuator endpoints not working when specifying a port

Question

recently I changed my spring boot properties to define a management port. In doing so, my unit tests started to fail :(

I wrote a unit test that tested the /

Answer 1

For Spring Boot 2.x the integration tests configuration could be simplified.

For example simple custom heartbeat endpoint

@Component
@Endpoint(id = "heartbeat")
public class HeartbeatEndpoint {

    @ReadOperation
    public String heartbeat() {
        return "";
    }
}

Where integration test for this endpoint

@SpringBootTest(
        classes = HeartbeatEndpointTest.Config.class,
        properties = {
                "management.endpoint.heartbeat.enabled=true",
                "management.endpoints.web.exposure.include=heartbeat"
        })
@AutoConfigureMockMvc
@EnableAutoConfiguration
class HeartbeatEndpointTest {

    private static final String ENDPOINT_PATH = "/actuator/heartbeat";

    @Autowired
    private MockMvc mockMvc;

    @Test
    void testHeartbeat() throws Exception {
        mockMvc
                .perform(get(ENDPOINT_PATH))
                .andExpect(status().isOk())
                .andExpect(content().string(""));
    }

    @Configuration
    @Import(ProcessorTestConfig.class)
    static class Config {

        @Bean
        public HeartbeatEndpoint heartbeatEndpoint() {
            return new HeartbeatEndpoint();
        }

    }

}