[PATCH 1 of 5 V4] testing: generate tests operations using Hypothesis

[timeless]

> When does this happen (because mkdirp() seems to check whether the
> path already exists)?

David MacIver <david at drmaciver.com> wrote:
> When a parent of the path exists and is not a directory. So if we e.g. try
> to create foo/bar/ but foo already exists and is an ordinary file.

I think it might be useful to have a comment explaining that.