I am testing functionality that allows different users to exchange comments in real-time i.e. every user receives updates on all the events (comment added, comment deleted, total number of comments updated etc) without refreshing the page - something similar to FB comments posting.
I am looking for some fresh ideas for test scenarios. I checked basic scenarios of posting/deleting comments. I checked scenario when one user deletes comments and one user adds comments I checked connectivity issues (to see what happens when a user loses and restores his connection).
I am a bit new to testing this kind of systems, so I will really appreciate if you guys could help me out with some ideas?