Can we perform testing for any individual NF like NRF or PCF using this simulator

Can we do individual testing for any Network Element like SMF / UPF instead of end to end testing ?

I was wondering what you mean by “using this simulator” in your title?
As far as I know, there are some network functions in free5GC that can be tested individually, such as amf/internal/gmm/init_test.go in AMF, which can be used for individual testing.

Hope I have solved your doubts! :wink: