bug#50630: [PATCH] Add tests for insert-directory

[Eli Zaretskii]

> Date: Sat, 25 Sep 2021 18:01:26 +0000
> From: John Cummings <john@rootabega.net>
> Cc: 50630@debbugs.gnu.org
> 
> > With your recipe, indeed the free space is not always correct. But
> > why is that use case interesting? insert-directory is not a normally
> > a user-visible function.
> 
> If being a user-visible function is necessary to consider it interesting,
> then I reported this as a bug in the verbose `list-directory' output,
> which is documented in the manual.

Like I said before: let's pick this up when your test is installed,
and we can run it and debug it if needed.