Unit testing

Hi Experts

I'll be working on one small project which is related to replacing the old part with new part in BOM level and correct part has to consider for MRP run. I'm basically from MM background so i have a problem in testing part. If you let me know the different types of scenario where i can do the multiple testing for this concept.

Your valuable inputs really going to help me a lot, thanks in advance for your help

Regards

Muthu