What kind of feature would you like to request?

Additional function parameters / changed functionality / changed defaults?

Please describe your wishes

_create_random_gene_names have no checks to name unique, as a result we have gene name duplicates and errors like pandas.errors.InvalidIndexError: Reindexing only valid with uniquely valued Index objects when testing

1. Fixed random seed is needed to test reproducibility
2. Rewrite function

Maybe we should use set.add and check set length