AspectJ annotation pointcuts fail to evaluate against interface-based proxies

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNotNull;

import java.lang.reflect.Method;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.junit.Test;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.support.AopUtils;
import org.springframework.transaction.annotation.Transactional;

public class AopUtilsTest {

	@Test
	public void getMostSpecificMethod() throws Exception {
		MyInterface proxy = (MyInterface) new ProxyFactory(MyInterface.class, new MyMethodInterceptor())
				.getProxy(MyInterface.class.getClassLoader());
		Method interfaceMethod = MyInterface.class.getMethod("test");
		Method proxyMethod = proxy.getClass().getMethod("test");
		Method mostSpecificMethod = AopUtils.getMostSpecificMethod(interfaceMethod, proxy.getClass());
		assertNotEquals(proxyMethod, interfaceMethod);
		assertEquals(interfaceMethod, mostSpecificMethod); //failed
		assertNotNull(mostSpecificMethod.getAnnotation(Transactional.class));
	}

	public static interface MyInterface {

		@Transactional
		public String test();

	}

	public static class MyMethodInterceptor implements MethodInterceptor {

		@Override
		public Object invoke(MethodInvocation mi) throws Throwable {
			return null;
		}

	}

}

	if(Proxy.isProxyClass(targetClass))
		return method;