主要应用程序测试始终给出Java.lang.IlgalStateException：无法加载ApplicationContext

Question

我正在尝试运行主要的应用程序测试类。但是，它总是给予无法加载应用程序上下文

application.java

@SpringBootApplication
@ComponentScan(basePackages = { "com.aaa.abc","com.aaa.def" })
public class Application extends SpringBootServletInitilizer {

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

@Override
protected SpringApplicationBuilder configure (SpringApplicationBuilder application) {
    return application.sources(Application.class);
}
}

ApplicationTest.java

@SpringBootTest
class ApplicationTest {
@Test
void contextLoads() {
}
}

i通过在Application -task类中提供应用程序类的路径，如下所示。但这是同样的例外

@SpringBootTest(classes={com.aaa.Application.class})