[PATCH 03 of 10 V2] revlog: add some direct testing of the slicing logic

[Yuya Nishihara]

On Fri, 21 Dec 2018 12:47:06 +0100, Boris Feld wrote:
> # HG changeset patch
> # User Boris Feld <boris.feld at octobus.net>
> # Date 1545304635 -3600
> #      Thu Dec 20 12:17:15 2018 +0100
> # Node ID 6236b26993a268a3bbf3269e44159aa979d2e625
> # Parent  df9b79e863d6e5215175487330b1469067e20bbd
> # EXP-Topic sparse-revlog
> # Available At https://bitbucket.org/octobus/mercurial-devel/
> #              hg pull https://bitbucket.org/octobus/mercurial-devel/ -r 6236b26993a2
> revlog: add some direct testing of the slicing logic

Queued 3 and 4 as well, thanks. I fixed several Python 3 issues.