[PATCH V2] tests: add diff color trailing whitespace test

[Yuya Nishihara]

On Wed, 11 Jul 2018 23:40:32 +0200, Sune Foldager via Mercurial-devel wrote:
> # HG changeset patch
> # User Sune Foldager <cryo at cyanite.org>
> # Date 1531318293 -7200
> #      Wed Jul 11 16:11:33 2018 +0200
> # Node ID 95fc4453e33a79acca36f978019a05ff9f4ae04a
> # Parent  4d5fb4062f0bb159230062701461fa6cab9b539b
> tests: add diff color trailing whitespace test

Queued, thanks.