Record method calls in one session for replaying in future test sessions?

Question

I have a backend system which we use a third-party Java API to access from our own applications. I can access the system as a normal user along with other users, but I do no

Answer 1

This can be done with AOP, aspect oriented programming. It allows to intercept method calls by byte code manipulation. Do a bit of search for examples.

In one case this can do recording, in the other replaying.

Pointers: wikipedia, AspectJ, Spring AOP.

Unfortunately one moves a bit outside the java syntax, and a simple example can better be sought elsewhere. With explanation.

Maybe combined with unit tests / some mocking test framework for offline testing with recorded data.