D7163: KSqueezedTextLabel: Add several autotests

[Dominik Haumann]

dhaumann accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R236 KWidgetsAddons

BRANCH
  arcpatch-D7163

REVISION DETAIL
  https://phabricator.kde.org/D7163

To: rkflx, #frameworks, dhaumann
Cc: dhaumann