[TASK] Add unit tests for stdWrap_date()

Resolves: #70287
Releases: master
Change-Id: I1050bc805b57bc66ba45ffdb4ac014b898e1f3c8
Reviewed-on: http://review.typo3.org/43717


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Michael Oehlhof <typo3@oehlhof.de>
Tested-by: Michael Oehlhof <typo3@oehlhof.de>
Reviewed-by: Frank Nägler <frank.naegler@typo3.org>
Tested-by: Frank Nägler <frank.naegler@typo3.org>