Size of fixture files is going to grow
When you install an extension you also get all its test files, unless there's separate packaging. It might be better for all these fixture files to live in the cloud somewhere else and either:
- During tests pull them in.
- Store just the SHA hashes of the files in the repo and compare against those.
The files aren't huge, but once you get 10 or so it starts to get into MB, which is completely unnecessary for the end user.