Custom loader for Junit Spring Runner

public class Loader implements ContextLoader {
 
    private Class testedService;
    private Class[] beans;
 
 
    @Override
    public String[] processLocations(Class<?> testClass, String... locs) {
        TestedService annotation = testClass.getAnnotation(TestedService.class);
        testedService = annotation.service();
        beans = annotation.beans();
        return locs;
    }
 
    @Override
    public ApplicationContext loadContext(String... locs) throws Exception {
        GenericApplicationContext ctx = new GenericApplicationContext();
        final XmlBeanDefinitionReader xmlReader = new XmlBeanDefinitionReader(ctx);
        xmlReader.loadBeanDefinitions(new ClassPathResource("spring/context.xml"));
        final Map<String, Object> declaredValues = new HashMap<String, Object>(1);
        final String serviceName = StringUtils.uncapitalize(testedService.getSimpleName().replace("Impl", ""));
        register(serviceName, testedService, declaredValues,ctx);
        declaredValues.put("mocksHolder", testedService);
        register("autoBeanDeclarer", AutoBeanDeclarer.class, declaredValues,ctx);
        for (final Class bean : beans) {// registering all the other beans
            final String beanName=StringUtils.uncapitalize(bean.getSimpleName().replace("Impl", ""));
            register(beanName, bean, declaredValues,ctx);
        }
 
        AnnotationConfigUtils.registerAnnotationConfigProcessors(ctx);
        ctx.refresh();
        return ctx;
    }
 
    private void register(final String name, final Class clazz, Map<String, Object> values,GenericApplicationContext ctx) {
        final BeanDefinitionBuilder serviceBuilder = BeanDefinitionBuilder.rootBeanDefinition(clazz);
        for (Map.Entry<String, Object> entry : values.entrySet()) {
            serviceBuilder.addPropertyValue(entry.getKey(), entry.getValue());
        }
        values.clear();
        ctx.registerBeanDefinition(name, serviceBuilder.getRawBeanDefinition());
 
    }
}
 
// Usage, note that the location String has to be unique in order to make spring load the context separately for each test.
 
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(loader = Loader.class,locations="SomeUniqueString")
@TestedService(service = SomeServiceImpl.class)
public class SomeServiceCases {
 
  // tests and autowiring..
 
}