The old, but still applicable, UEFI Secure Boot functional tests from the Windows Logo Kit (WLK), now Hardware Lab Kit (HLK), along with testing instructions...
-
Example Scroll to the bottom of the instructions page... Or here is the direct link: https://msdnshared.blob.core.windows.net/media/MSDNBlogsFS/prod.evol.blogs.msdn.com/CommunityServer.Components.PostAttachments/00/10/47/32/33/UefiSecureBootManualTests.zip