How do we do testing for Uuid::new_v4()?

[jymchng]

I am trying to do a unit test for replacing word that matches a regex with a Uuid, however, Uuid::new_v4() generates a random Uuid each time, how can I write such unit test?

[kinggoesgaming]

IMO you should check for the version and variant properties as they should be the same across any v4 Uuid instance.