springboot juint 测试 Could not open ServletContext resource [/application.yml]

junit测试时一直提示Could not open ServletContext resource [/application.yml]

目录结构

service层测试代码

@RunWith(SpringRunner.class)
@SpringBootTest(classes = GirlApplication.class)//启动整个springboot功能
public class GirlServcieTest {
    @Autowired
    private GirlService  girlService;
    @Test
    public void findById(){
        Girl byId = girlService.findById(1);
        Assert.assertEquals(new Integer(9),byId.getAge());
    }
}

问题：

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.springboot.GirlApplication]; nested exception is java.io.FileNotFoundException: Could not open ServletContext resource [/application.yml]

at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:183) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]

at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:308) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]

at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:228) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]

at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:272) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]

at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:92) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:687) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:525) ~[spring-context-4.3.18.RELEASE.jar:4.3.18.RELEASE]

at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) ~[spring-boot-1.5.14.RELEASE.jar:1.5.14.RELEASE]