As I'm recommending against using split tests, Maciej raised a concern that it's difficult to create monolithic tests manually.
Indeed, you need to find an existing script test, copy boilerplate, and fix the number of ".." path components.
Created attachment 106673 [details]
Comment on attachment 106673 [details]
Seems like a good start.
There was some disagreement on mailing list whether this is going to be useful. The discussion has dried out, and I guess that the only way to know that for sure is to land and try.