我有一个简单的健康控制器，定义如下：

@RestController
@RequestMapping("/admin")
public class AdminController {

    @Value("${spring.application.name}")
    String serviceName;

    @GetMapping("/health")
    String getHealth() {
        return serviceName + " up and running";
    }
}

以及测试它的测试类：

@WebMvcTest(RedisController.class)
class AdminControllerTest {

    @Autowired
    private MockMvc mockMvc;

    @Test
    public void healthShouldReturnDefaultMessage() throws Exception {
        this.mockMvc.perform(get("/admin/health"))
                .andDo(print())
                .andExpect(status().isOk())
                .andExpect(content().string(containsString("live-data-service up and running")));
    }
}

运行测试时，出现以下错误：

***************************

APPLICATION FAILED TO START

***************************

Description:

Field configuration in com.XXXX.LiveDataServiceApplication required a bean of type 'com.XXXXX.AppConfiguration' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)

Action:

Consider defining a bean of type 'com.XXXX.AppConfiguration' in your configuration.

这里是 AppConfiguration.java 在与主spring boot应用程序类相同的包中定义：

@Configuration
@EnableConfigurationProperties
@ConfigurationProperties
public class AppConfiguration {

    @Value("${redis.host}")
    private String redisHost;

    @Value("${redis.port}")
    private int redisPort;

    @Value("${redis.password:}")
    private String redisPassword;
...
// getters and setters come here

主要类别：

@SpringBootApplication
public class LiveDataServiceApplication {

    @Autowired
    private AppConfiguration configuration;

    public static void main(String[] args) {
        SpringApplication.run(LiveDataServiceApplication.class, args);
    }

    @Bean
    public RedisConnectionFactory redisConnectionFactory() {
        RedisStandaloneConfiguration redisConfiguration = new RedisStandaloneConfiguration(configuration.getRedisHost(), configuration.getRedisPort());
        redisConfiguration.setPassword(configuration.getRedisPassword());
        return new LettuceConnectionFactory(redisConfiguration);
    }
}

如果我在test类中修改注解如下，则测试通过：

@SpringBootTest
@AutoConfigureMockMvc
class AdminControllerTest {
....

我错过了什么？