Bean scanning for Spring Boot in IntelliJ

I am using Spring Boot to create a micro service, and all is well, except for a couple of minor annoyances.

Autowiring in my test classes, I am getting the following warnings on @Autowired annotations:

Autowired members must be defined in the valid spring bean(@Component/@Service,etc.) Checks that auto wired members are defined in valid Spring bean (@Component|@Service|...).

this is using the following test class

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = Application.class)
public class MyRecordTest {

    public static final String NUMBER = "ABC/123456";

    @Autowired
    private MyFactory factory;

    @Autowired
    private Marshaller marshaller;

    ...
}

where my Application configuration class is defined as

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

    @Bean
    public Marshaller getMarshaller() {
        Jaxb2Marshaller marshaller = new Jaxb2Marshaller();
        marshaller.setPackagesToScan("com.my.classes");
        return marshaller;
    }
}

and MyFactory has the @Component annotation:

@Component
public class MyFactory {
    ...
}

How can I resolve this?

Also, standing out like a sore thumb, the only uncovered line in my application is the SpringApplication.run line in the public static void main method:

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

How can I get this covered or ignored?