Followed up with mdbooth and verified that this should be mocked, so marking as confirmed.
It was also suggested that we need to add functional test coverage that does call genisoimage. I'm working separately to figure out the best course of action there, but am leaning towards wanting the functional test coverage to be limited to just making sure it handles an ISO image rather than calling out to a specific program to generate it. I think we should depend on integration test coverage for actually calling out to specific utilities.
Followed up with mdbooth and verified that this should be mocked, so marking as confirmed.
It was also suggested that we need to add functional test coverage that does call genisoimage. I'm working separately to figure out the best course of action there, but am leaning towards wanting the functional test coverage to be limited to just making sure it handles an ISO image rather than calling out to a specific program to generate it. I think we should depend on integration test coverage for actually calling out to specific utilities.