New ask Hacker News story: Ask HN: How should I test all potential combinations of user actions?

Ask HN: How should I test all potential combinations of user actions?
2 by ryeguy_24 | 0 comments on Hacker News.
For complex software, there are infinite combinations of actions that the user can do in a certain order. What are the leading approaches to testing that any of those actions don't break the software? My initial idea is to come up with a set of all user actions or inputs that are available and then simulate those events happening in various orders to see if things happen as intended or break. Would welcome any thoughts or experience doing this.