@Bean
    public LocaleResolver localeResolver() {
        AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver();
        localeResolver.setDefaultLocale(Locale.US);
        return localeResolver;
    }
@Test
    void localeResolver_ReturnsAcceptHeaderLocaleResolver() {
        LocaleConfig localeConfig = context.getBean(LocaleConfig.class);
        LocaleResolver localeResolver = localeConfig.localeResolver();
        assertInstanceOf(AcceptHeaderLocaleResolver.class, localeResolver);
    }