Unit testing Spring @Around AOP methods

You can test a Spring Aspect by creating a proxy programatically:

MyInterface target = new MyClass();
AspectJProxyFactory factory = new AspectJProxyFactory(target);
MyAspect aspect = new MyAspect(arg);
factory.addAspect(aspect);
MyInterface proxy = factory.getProxy();

… then you can call methods on proxy, and make assertions about aspect, proxy and target.