EntityFramework 7 Unit Testing Calls to Stored Procedure

Question

I am currently working in EF Core and I am using in Memory for Unit Testing.

I have couple of Methods calling Stored Procedure.

I would like to know two things

1. How I can add Stored Procedure for EF Core thru migration Script?
2. How you use In Memory for Unit Testing methods calling Stored Procedure. Or Let me know the Alternatives.

Cheers