D13993: Honor BUILD_TESTING

[David Faure]

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

REPOSITORY
  R316 KMediaPlayer

REVISION DETAIL
  https://phabricator.kde.org/D13993

To: arojas, alexmerry, dfaure
Cc: kde-frameworks-devel, michaelh, ngraham, bruns