Test failes when defined scanBasePackages for #SpringBootApplication - spring

Question

I am trying to write a JavaFX aplication integrated with Spring Boot. It works, but there is some problem with integration test. I want to place MyApplication and Config classes to different packages, so, I add in MyApplication
scanBasePackages = "com.stackoveflow"
and then my test failes with exceptions:
java.lang.IllegalStateException: Failed to load ApplicationContext
Caused by: org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'mainView' defined in class path
resource [com/stackoveflow/core/Config.class]: Bean instantiation via
factory method failed; nested exception is
org.springframework.beans.BeanInstantiationException: Failed to
instantiate [com.stackoveflow.core.View]: Factory method 'getMainView'
threw exception; nested exception is
java.lang.ExceptionInInitializerError Caused by:
java.lang.ExceptionInInitializerError Caused by:
java.lang.IllegalStateException: Toolkit not initialized
if I remove scanBasePackages = "com.stackoveflow"
#Lazy
#SpringBootApplication()
public class MyApplication extends Application {
Test become succesfull, but application itself failes with exception about "cannot find beans" defined in Config.
my code:
MyApplication.java
#Lazy
#SpringBootApplication(scanBasePackages = "com.stackoveflow")
public class MyApplication extends Application {
private static String[] savedArgs;
protected ConfigurableApplicationContext context;
#Override
public void init() throws Exception {
context = SpringApplication.run(getClass(), savedArgs);
context.getAutowireCapableBeanFactory().autowireBean(this);
}
#Override
public void stop() throws Exception {
super.stop();
context.close();
}
protected static void launchApp(Class<? extends Application> clazz, String[] args) {
savedArgs = args;
Application.launch(clazz, args);
}
#Value("${ui.title:JavaFX приложение}")
private String windowTitle;
#Qualifier("mainView")
#Autowired
private View view;
#Override
public void start(Stage stage) throws Exception {
stage.setTitle(windowTitle);
stage.setScene(new Scene(view.getRoot()));
stage.setResizable(true);
stage.centerOnScreen();
stage.show();
}
public static void main(String[] args) {
launchApp(MyApplication.class, args);
}
}
Config.java
#Configuration
public class Config {
#Bean(name = "mainView")
public View getMainView() throws IOException {
return loadView("fxml/main.fxml");
}
#Bean
public Controller getMainController() throws IOException {
return (Controller) getMainView().getController();
}
protected View loadView(String url) throws IOException {
InputStream fxmlStream = null;
try {
fxmlStream = getClass().getClassLoader().getResourceAsStream(url);
FXMLLoader loader = new FXMLLoader();
loader.load(fxmlStream);
return new View(loader.getRoot(), loader.getController());
} finally {
if (fxmlStream != null) {
fxmlStream.close();
}
}
}
}
MyApplicationTest.java
#RunWith(SpringJUnit4ClassRunner.class)
#SpringApplicationConfiguration(classes = MyApplication.class)
public class MyApplicationTests {
#Test
public void contextLoads() {
System.out.println("lol");
}
}