[BUGFIX] #4343 Some unit tests read the real TS setup

Change-Id: I0bff02b6c3c33ce1f79d53d783c1279db0b4ea41
Reviewed-on: http://review.typo3.org/35651
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>