如何在junit Test类中将配置类映射到springboot中的application.properties？

@RunWith(SpringRunner.class)
@SpringBootTest
@TestPropertySource(locations = "classpath:test.properties")
public class MyTest {

    @Autowired
    private MyConfig myConfig;

    @Test
    public void testConfig() {
        // 在测试中使用配置
        System.out.println(myConfig.getProperty());
    }
}

my.config.property=value

@ConfigurationProperties(prefix = "my.config")
public class MyConfig {

    private String property;

    // getter 和 setter 方法

    public String getProperty() {
        return property;
    }

    public void setProperty(String property) {
        this.property = property;
    }
}