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

Change-Id: I2776a7ead1a661ec12db7238bcfe28d4464b97a2
Reviewed-on: http://review.typo3.org/35650
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>