Snapshots are perfectly acceptable for testing Legacy Apps. If it truly is a legacy app, snapshots should rarely be updated (because you're not updating the co

Snapshots are perfectly acceptable for testing Legacy Apps. If it truly is a legacy app, snapshots should rarely be updated (because you're not updating the code) and any introduced bugs will trip a snapshot. The issue is always about people blindly updating snapshots because 'I made a change and the snapshots are wrong'. If the failed tests don't line up with what you believe you changed, you are the reason it's Legacy Code.