Is the current SRS randomly generated?

I was learning this library recently, when I was debugging, I found that the function ```gen_srs_for_testing``` always returns the same SRS. Further, I found that the random generator for G1, G2, and scalar always returns the same ```g```, ```h```, and ```t```, no matter what the ```SUPPORTED_SIZE``` is set to.

I assume the RNG is set to the same seed in every test. Does this have an impact on security? BTW, does _hyperplonk_ support completely random SRS?